Files
sencho/backend/src/services/MeshService.ts
T

3360 lines
153 KiB
TypeScript

import net from 'net';
import path from 'path';
import fs from 'fs/promises';
import { randomUUID } from 'crypto';
import { EventEmitter } from 'events';
import * as YAML from 'yaml';
import { ComposeService } from './ComposeService';
import { StackOpLockService } from './StackOpLockService';
import { DatabaseService, type NodeMode } from './DatabaseService';
import DockerController from './DockerController';
import { FileSystemService } from './FileSystemService';
import { LicenseService } from './LicenseService';
import { PROXY_TIER_HEADER, deployProvenanceHeaders } from './license-headers';
import { MeshForwarder, type MeshForwarderHost } from './MeshForwarder';
import { NodeRegistry } from './NodeRegistry';
import { PilotTunnelManager } from './PilotTunnelManager';
import { MeshProxyTunnelDialer, type DialFailureCode } from './MeshProxyTunnelDialer';
import { generateOverrideYaml, MeshAlias, SENCHO_MESH_NETWORK } from './MeshComposeOverride';
import { lookupContainerIp } from '../mesh/containerLookup';
import { STREAM_PENDING_DATA_MAX_BYTES } from '../pilot/protocol';
import { redactSensitiveText, sanitizeForLog } from '../utils/safeLog';
import { isDebugEnabled } from '../utils/debug';
import { isPathWithinBase, isValidStackName, isValidRelativeStackPath } from '../utils/validation';
import { getErrorMessage } from '../utils/errors';
import { PORT as SENCHO_LISTEN_PORT } from '../helpers/constants';
import { assertPolicyGateAllows, buildSystemPolicyGateOptions } from '../helpers/policyGate';
const ACTIVITY_BUFFER_SIZE = 1000;
const ALIAS_REFRESH_INTERVAL_MS = 60_000;
const PROBE_TIMEOUT_MS = 5_000;
const SLOW_PROBE_THRESHOLD_MS = 500;
const DEFAULT_MESH_SUBNET = '172.30.0.0/24';
// Cadence at which `revalidateDataPlane` re-evaluates the Docker network and
// Sencho's attachment. Bounds the staleness of `getDataPlaneStatus()` between
// runtime mesh changes (operator `docker network rm`, external recreate at a
// different subnet, container detach) and the next /api/health response.
export const DATA_PLANE_REVALIDATE_INTERVAL_MS = 10_000;
// After a failed in-place recreate attempt, refuse to retry within this
// window so a persistent CIDR overlap does not spam the Docker daemon on
// every 10s tick. Matches the cadence pattern used by other notification
// dedup paths (e.g. PolicyEnforcement.notifyTrivyMissingOnce).
export const MESH_RECREATE_THROTTLE_MS = 60_000;
/**
* Subnets attempted in order when SENCHO_MESH_SUBNET is unset and no
* `sencho_mesh` network already exists. Each is a `/24` chosen to dodge the
* usual homelab Docker patterns: `172.30.0.0/24` matches the prior default,
* `172.31.0.0/24` sits one above it, and the `10.42`/`10.43` pair lands well
* outside both the linuxserver/* `172.30.0.0/16` family and the typical
* `192.168.x` LAN range. The first candidate that Docker accepts wins; the
* chosen subnet persists implicitly through the `sencho_mesh` network on the
* Docker daemon (next boot adopts it via the inspect path).
*/
export const MESH_SUBNET_CANDIDATES = [
'172.30.0.0/24',
'172.31.0.0/24',
'10.42.0.0/24',
'10.43.0.0/24',
];
const REACHABLE_REASON: Record<DialFailureCode, string> = {
auth_failed: 'api token rejected by remote',
endpoint_not_found: 'remote does not support proxy mesh',
tls_failed: 'TLS handshake failed',
no_target: 'proxy target missing',
network_error: 'remote unreachable',
};
/**
* Returns the static IPv4 address Sencho will pin itself to on the mesh
* Docker network: `<network address> + 2`. The Docker daemon assigns
* `<network> + 1` to the bridge gateway, so `+2` is the first usable host
* address. For the default `172.30.0.0/24` this is `172.30.0.2`. Throws
* on invalid CIDR or a prefix too narrow to host two addresses.
*/
export function getSenchoIpFromSubnet(subnet: string): string {
const cidr = subnet.trim().match(/^(\d+)\.(\d+)\.(\d+)\.(\d+)\/(\d+)$/);
if (!cidr) throw new Error(`Invalid mesh subnet CIDR: ${subnet}`);
const octets = [Number(cidr[1]), Number(cidr[2]), Number(cidr[3]), Number(cidr[4])];
const prefix = Number(cidr[5]);
if (octets.some((o) => o < 0 || o > 255) || prefix < 8 || prefix > 30) {
throw new Error(`Invalid mesh subnet CIDR: ${subnet}`);
}
const ipInt = (octets[0] << 24) | (octets[1] << 16) | (octets[2] << 8) | octets[3];
const mask = prefix === 0 ? 0 : (0xffffffff << (32 - prefix)) >>> 0;
const network = (ipInt & mask) >>> 0;
const sencho = (network + 2) >>> 0;
return [
(sencho >>> 24) & 0xff,
(sencho >>> 16) & 0xff,
(sencho >>> 8) & 0xff,
sencho & 0xff,
].join('.');
}
/**
* Returns the `IPRange` CIDR that biases Docker's IPAM auto-allocation to
* the upper half of `subnet`, leaving the lower half (which contains
* Sencho's static `<network>+2`) free for explicit pins only. For the
* default `172.30.0.0/24` this is `172.30.0.128/25`.
*
* The IPRange constrains auto-allocation only: workload containers without
* an explicit `ipv4Address` get `<network>+128` and up, never the reserved
* low addresses. Explicit pins inside the Subnet but outside the IPRange
* still succeed (libnetwork's `RequestAddress` checks the bitmap, not the
* IPRange, when the caller supplies a preferred address), so Sencho's own
* `ensureSelfAttached` can still bind `<network>+2`.
*
* Throws on invalid CIDR or a prefix narrower than `/30` (no upper half to
* carve). The candidate list is `/24` so this never trips in practice.
*/
export function getMeshIpRangeFromSubnet(subnet: string): string {
const cidr = subnet.trim().match(/^(\d+)\.(\d+)\.(\d+)\.(\d+)\/(\d+)$/);
if (!cidr) throw new Error(`Invalid mesh subnet CIDR: ${subnet}`);
const octets = [Number(cidr[1]), Number(cidr[2]), Number(cidr[3]), Number(cidr[4])];
const prefix = Number(cidr[5]);
if (octets.some((o) => o < 0 || o > 255) || prefix < 8 || prefix > 29) {
throw new Error(`Invalid mesh subnet CIDR: ${subnet}`);
}
const ipInt = (octets[0] << 24) | (octets[1] << 16) | (octets[2] << 8) | octets[3];
const mask = prefix === 0 ? 0 : (0xffffffff << (32 - prefix)) >>> 0;
const network = (ipInt & mask) >>> 0;
const upperHalfStart = (network + (1 << (32 - prefix - 1))) >>> 0;
return [
(upperHalfStart >>> 24) & 0xff,
(upperHalfStart >>> 16) & 0xff,
(upperHalfStart >>> 8) & 0xff,
upperHalfStart & 0xff,
].join('.') + '/' + (prefix + 1);
}
/**
* Discriminator for why the mesh data plane is or is not healthy. Set by
* `setupMeshNetwork` and exposed through `getDataPlaneStatus()` so
* `/api/health` and `/api/meta` can surface the state without parsing the
* raw error string.
*/
export type MeshDataPlaneReason =
| 'ok'
| 'not_started' // MeshService.start() has not finished setupMeshNetwork yet
| 'subnet_invalid' // SENCHO_MESH_SUBNET did not parse
| 'subnet_overlap' // Docker refused the IPAM pool, another network owns the CIDR
| 'subnet_mismatch' // sencho_mesh already exists with a different subnet
| 'ip_in_use' // another container squats <network>+2
| 'attach_failed' // self-attach failed for any other reason
| 'not_in_docker' // HOSTNAME unset or self-container lookup returned 404
| 'not_found'; // sencho_mesh was removed after boot (revalidator-only)
export interface MeshDataPlaneStatus {
ok: boolean;
reason: MeshDataPlaneReason;
message: string | null;
subnet: string;
}
export type MeshActivitySource = 'pilot' | 'mesh';
export type MeshActivityLevel = 'info' | 'warn' | 'error';
export type MeshActivityType =
| 'route.dispatch' | 'route.resolve.ok' | 'route.resolve.denied' | 'route.resolve.fail'
| 'tunnel.open' | 'tunnel.fail' | 'tunnel.backpressure'
| 'opt_in' | 'opt_out'
| 'mesh.enable' | 'mesh.disable'
| 'mesh.override.preserved'
| 'probe.ok' | 'probe.fail'
| 'forwarder.listen' | 'forwarder.unlisten' | 'forwarder.error'
| 'proxy-tunnel.open.ok' | 'proxy-tunnel.open.fail' | 'proxy-tunnel.close'
| 'mesh.proxy_tunnel.identify'
| 'mesh.reconcile.fail';
export interface MeshActivityEvent {
ts: number;
source: MeshActivitySource;
level: MeshActivityLevel;
type: MeshActivityType;
nodeId?: number;
alias?: string;
streamId?: number;
message: string;
details?: Record<string, unknown>;
}
export interface MeshGlobalAlias {
/** `<service>.<stack>.<nodeName>.sencho` */
host: string;
nodeId: number;
nodeName: string;
stackName: string;
serviceName: string;
port: number;
}
export interface MeshTarget {
nodeId: number;
stack: string;
service: string;
port: number;
alias: string;
}
export interface MeshRegenFailure {
nodeId: number;
stackName: string;
message: string;
}
export interface MeshRegenSummary {
regenerated: number;
failures: MeshRegenFailure[];
skipped: boolean;
reason?: string;
}
/**
* How a node participates in mesh routing right now:
* - `local`: the Sencho serving this request.
* - `pilot`: a remote with a pilot agent. Live-tunnel state is captured
* separately in `pilotConnected`.
* - `proxy`: a remote that central reaches via the long-lived api_token.
* Central maintains a persistent bidirectional WS to each mesh-enabled
* proxy peer, reconciled periodically; the operator sees no badge while
* the bridge is up.
* - `unreachable`: configuration or runtime problem keeps mesh traffic
* from flowing. `reachableReason` carries an actionable hint.
*/
export type MeshReachableMode = 'local' | 'pilot' | 'proxy' | 'unreachable';
/**
* State of the peer→central reverse path. The forward WS to a proxy-mode
* peer is bidirectional; peer→central traffic flows over the same WS via
* `tcp_open_reverse`. This discriminator surfaces whether that bridge is
* currently usable so the Routing tab can show a transient pill while the
* dialer is reconnecting.
* - `connected`: forward WS is open; peer can dispatch reverse streams.
* - `connecting`: dial in flight; transient.
* - `unavailable`: no bridge and no dial in flight (peer just rebooted, or
* last dial cached a failure).
* - `not_applicable`: not a proxy-mode peer, or mesh disabled on this node.
*/
export type MeshReverseCallbackStatus = 'connected' | 'connecting' | 'unavailable' | 'not_applicable';
export interface MeshNodeStatus {
nodeId: number;
nodeName: string;
enabled: boolean;
/** Forwarder state for the LOCAL node (the Sencho instance answering this request). Always `null` for any non-local node — fetching the remote forwarder state requires a cross-node call which lands in Phase B. */
localForwarderListening: boolean | null;
/**
* True iff a pilot tunnel is currently registered for this node. Only
* meaningful when `reachableMode === 'pilot'`. Kept for diagnostic
* surfaces; the Routing tab badge logic consumes `reachableMode` and
* ignores this field for proxy / local nodes.
* TODO: collapse into `reachableMode` (introduce `pilot_offline` value)
* once no remaining caller reads `pilotConnected` directly.
*/
pilotConnected: boolean;
/** Canonical reachability classification consumed by the Routing tab. */
reachableMode: MeshReachableMode;
/** Short, operator-facing reason when `reachableMode === 'unreachable'`. Null otherwise. */
reachableReason: string | null;
/** Peer→central reverse path state. `not_applicable` for non-proxy peers. */
reverseCallbackStatus: MeshReverseCallbackStatus;
/**
* Stacks opted into the mesh on this node, with a per-stack resolvability
* flag. `currentlyResolvable` is `true` iff the alias cache currently
* carries at least one alias for that (nodeId, stackName) pair, i.e. the
* stack's services were inspectable and exposed at least one port the
* last time `refreshAliasCache()` ran (every 60 s on a timer, plus on
* opt-in / opt-out and pilot reconnect). A suspended opt-in (stack
* stopped, services not running) reports `currentlyResolvable: false` so
* the Routing tab can surface the asymmetry between the persistent
* registry and the live alias list.
*/
optedInStacks: Array<{ stackName: string; currentlyResolvable: boolean }>;
activeStreamCount: number;
}
export interface MeshNodeDiagnostic {
nodeId: number;
forwarder: { listening: boolean; listenerCount: number };
pilot: { connected: boolean; bufferedAmount: number; lastSeen: number | null };
activeStreams: Array<{ streamId: number; alias?: string; bytesIn: number; bytesOut: number; ageMs: number }>;
aliasCache: Array<{ host: string; targetNodeId: number; port: number }>;
}
export interface MeshRouteDiagnostic {
alias: string;
target: MeshTarget | null;
pilot: { connected: boolean; lastSeen: number | null };
lastError: { ts: number; message: string } | null;
lastProbeMs: number | null;
/** Wall-clock ms epoch of the last probe for this alias; null when no probe has ever run. */
lastProbeAt: number | null;
state: 'healthy' | 'degraded' | 'unreachable' | 'tunnel down' | 'not authorized';
}
export interface MeshProbeResult {
ok: boolean;
latencyMs?: number;
where?: 'no_route' | 'pilot_tunnel' | 'agent_resolve' | 'agent_dial' | 'target_port';
code?: string;
message?: string;
}
interface ActiveStreamRecord {
streamId: number;
alias?: string;
bytesIn: number;
bytesOut: number;
openedAt: number;
}
/**
* Sencho Mesh orchestrator. Owns:
* - in-process TCP forwarder (`MeshForwarder`) that binds per-alias
* listeners on Sencho's `sencho_mesh` bridge-network IP.
* - opt-in / opt-out persistence and cascading override regeneration
* - global alias aggregation (across the fleet via the existing HTTP
* proxy chain, see `inspectStackServices`)
* - cross-node TCP forwarding via `PilotTunnelManager` (central-side)
* - probe + diagnostics + activity ring buffer
*
* V1 limitations:
* - one cross-node alias per TCP port across the fleet (port-collision
* check at opt-in)
* - aliases resolve to Sencho's static IP on the internal `sencho_mesh`
* Docker bridge network. Meshed user services join `sencho_mesh` so
* that IP is reachable from inside their containers without any
* host-firewall coordination.
*/
export class MeshService extends EventEmitter implements MeshForwarderHost {
private static instance: MeshService;
private started = false;
private aliasCache = new Map<string, MeshGlobalAlias>();
private aliasByPort = new Map<number, MeshGlobalAlias>();
// Populated on pilot nodes via the D-1 override push. Central's
// db.listMeshStacks() is authoritative on central; pilots have no
// mesh_stacks rows (C-3 design), so the push payload carries the alias
// data they need to bind forwarder listeners for the reverse direction.
private pilotAliasOverlay = new Map<string, MeshGlobalAlias[]>();
private activity: MeshActivityEvent[] = [];
private activeStreams = new Map<number, ActiveStreamRecord>();
private aliasRefreshTimer?: NodeJS.Timeout;
private bridgeReconcileTimer?: NodeJS.Timeout;
private routeErrorMap = new Map<string, { ts: number; message: string }>();
private routeLatencyMap = new Map<string, number>();
// Lets the route diagnostic distinguish a fresh "healthy" verdict from a
// stale one carried over from a past probe; written in lockstep with the
// latency/error maps by every probe outcome.
private routeProbeAtMap = new Map<string, number>();
private activityListeners = new Set<(e: MeshActivityEvent) => void>();
private readonly forwarder: MeshForwarder;
private senchoIp: string | null = null;
private meshSubnet: string = DEFAULT_MESH_SUBNET;
private networkSetupError: string | null = null;
// Discriminator-typed mirror of networkSetupError. Both stay in sync via
// `recordSetupFailure` / the setupMeshNetwork success path. The discriminator
// is consumed by /api/health and the Routing tab; networkSetupError is
// preserved for callers that already read the raw error string (optInStack,
// applyLocalOverride, regenerateAllOverrides).
private dataPlaneStatus: MeshDataPlaneStatus = {
ok: false,
reason: 'not_started',
message: 'mesh data plane has not initialized yet',
subnet: '',
};
// On a pilot node, central's DB id for this node (e.g. 14). Used by
// handleAccept to decide same-node vs cross-node; the pilotAliasOverlay
// carries nodeIds from central's perspective, so comparing against the
// pilot's own local DB id (always 1) inverts dispatch. Null on central
// (fallback to getDefaultNodeId()). Populated from SENCHO_ENROLL_TOKEN.
private selfCentralNodeId: number | null = null;
// On a proxy-mode peer, central's DB id for this node, communicated
// through the `?nodeId=` query param on the `/api/mesh/proxy-tunnel` WS
// upgrade. Same purpose as `selfCentralNodeId` but for proxy peers,
// where there is no SENCHO_ENROLL_TOKEN to read at boot. Takes
// precedence in `handleAccept`'s self-id resolution because the active
// upstream tunnel is the most authoritative source. Cleared on tunnel
// close.
private proxyTunnelSelfCentralNodeId: number | null = null;
// 10s revalidator timer that re-evaluates the mesh data plane against
// Docker's current state so `/api/health` and the dashboard banner do
// not serve stale values after the operator removes or recreates
// sencho_mesh while Sencho is running.
private dataPlaneRevalidateTimer?: NodeJS.Timeout;
// Re-entrancy guard: two ticks of the revalidator can in principle
// overlap if a Docker inspect takes longer than the cadence. Skip the
// overlapping tick rather than fire concurrent network inspects.
private dataPlaneRevalidateInFlight = false;
// Wall-clock of the last auto-recreate attempt (success or failure).
// Used by `attemptInPlaceRecreate` to enforce MESH_RECREATE_THROTTLE_MS
// so a persistent overlap does not spam createNetwork on every tick.
private lastRecreateAttemptAt = 0;
private constructor() {
super();
this.setMaxListeners(50);
this.forwarder = new MeshForwarder(this);
}
public static getInstance(): MeshService {
if (!MeshService.instance) MeshService.instance = new MeshService();
return MeshService.instance;
}
private resolveSelfCentralNodeId(): number {
const tok = process.env.SENCHO_ENROLL_TOKEN;
if (tok) {
try {
// Extract payload only — signature verification not needed here;
// we only need the nodeId claim, not auth.
const [, b64] = tok.split('.');
const payload = JSON.parse(
Buffer.from(b64, 'base64url').toString('utf8'),
) as Record<string, unknown>;
if (typeof payload.nodeId === 'number') return payload.nodeId;
} catch {
// Malformed token; fall through to local default.
}
}
return NodeRegistry.getInstance().getDefaultNodeId();
}
public async start(): Promise<void> {
if (this.started) return;
this.started = true;
const ptm = PilotTunnelManager.getInstance();
ptm.on('tunnel-down', (nodeId: number) => this.onTunnelDown(nodeId));
ptm.on('tunnel-up', (nodeId: number) => {
this.logActivity({
source: 'pilot', level: 'info', type: 'tunnel.open',
nodeId, message: `pilot tunnel up for node ${nodeId}`,
});
// Boot regen runs before any pilot tunnel comes up, so any
// pilot-mode node misses its initial override push. Now that
// the tunnel is live, retry the regen for this node so its
// overrides on disk match what central holds. Idempotent:
// pushOverrideToNode writes the same file every time, and a
// tunnel reconnect during runtime regenerates harmlessly.
void this.regenerateOverridesForNode(nodeId).catch((err) => {
this.logActivity({
source: 'mesh', level: 'warn', type: 'forwarder.error',
nodeId,
message: `tunnel-up regen failed for node ${nodeId}: ${sanitizeForLog((err as Error).message)}`,
});
});
});
this.selfCentralNodeId = this.resolveSelfCentralNodeId();
await this.setupMeshNetwork();
try {
await this.refreshAliasCache();
} catch (err) {
this.logActivity({
source: 'mesh', level: 'error', type: 'forwarder.error',
message: `boot refreshAliasCache failed: ${sanitizeForLog((err as Error).message)}`,
});
}
try {
await this.syncForwarderListeners();
} catch (err) {
this.logActivity({
source: 'mesh', level: 'error', type: 'forwarder.error',
message: `boot syncForwarderListeners failed: ${sanitizeForLog((err as Error).message)}`,
});
}
await this.regenerateAllOverrides();
// Proactively dial every mesh-enabled proxy peer so the forward WS
// (which also carries peer→central reverse traffic) is up before any
// user request hits it. Fire-and-forget so start() does not block on
// remote I/O.
void this.proactiveBridgeFanout();
this.startBridgeReconcileLoop();
this.aliasRefreshTimer = setInterval(() => {
void (async () => {
try {
await this.refreshAliasCache();
await this.syncForwarderListeners();
} catch (err) {
console.warn('[MeshService] alias refresh failed:', sanitizeForLog((err as Error).message));
}
})();
}, ALIAS_REFRESH_INTERVAL_MS);
// Data-plane revalidator: bounds /api/health staleness at
// DATA_PLANE_REVALIDATE_INTERVAL_MS when the operator removes,
// recreates, or disconnects Sencho from sencho_mesh at runtime.
this.dataPlaneRevalidateTimer = setInterval(() => {
void this.revalidateDataPlane().catch((err) => {
console.warn(
'[MeshService] data plane revalidate failed:',
sanitizeForLog((err as Error).message),
);
});
}, DATA_PLANE_REVALIDATE_INTERVAL_MS);
const dpReason = this.dataPlaneStatus.reason;
const dataPlane = this.senchoIp ? 'ok' : `unavailable (${dpReason}: ${this.networkSetupError ?? 'unknown'})`;
const subnetSuffix = this.senchoIp ? `, subnet ${this.meshSubnet}` : '';
const ipSuffix = this.senchoIp ? `, self attached at ${this.senchoIp}` : '';
const summaryLevel: MeshActivityLevel = dpReason === 'ok'
? 'info'
: dpReason === 'not_in_docker' ? 'warn' : 'error';
const summaryMessage = `MeshService started (data plane ${dataPlane}${subnetSuffix}, self nodeId ${this.selfCentralNodeId})`;
this.logActivity({
source: 'mesh', level: summaryLevel, type: 'mesh.enable',
message: summaryMessage,
});
// Mirror to console so `docker logs sencho` surfaces the boot state.
// The activity entry above feeds the Routing tab; this line feeds the
// operator's `docker logs` workflow. Same content, different surface.
const consoleLine = `[Mesh] data plane ${dataPlane}${ipSuffix}${subnetSuffix}`;
if (summaryLevel === 'error') console.error(consoleLine);
else if (summaryLevel === 'warn') console.warn(consoleLine);
else console.log(consoleLine);
}
public async stop(): Promise<void> {
if (!this.started) return;
this.started = false;
if (this.aliasRefreshTimer) {
clearInterval(this.aliasRefreshTimer);
this.aliasRefreshTimer = undefined;
}
if (this.dataPlaneRevalidateTimer) {
clearInterval(this.dataPlaneRevalidateTimer);
this.dataPlaneRevalidateTimer = undefined;
}
this.stopBridgeReconcileLoop();
await this.forwarder.shutdown();
}
/**
* Walk every mesh-enabled proxy-mode peer and call
* `MeshProxyTunnelDialer.ensureBridge(nodeId)` on each. The bridge is
* the persistent bidirectional control-plane channel: central→peer
* `tcp_open` and peer→central `tcp_open_reverse` both flow over the
* same WS. Bounded concurrency 4 with a 250 ms stagger; failures are
* logged and never abort the fan-out. Called both at startup and on
* every reconcile tick. `ensureBridge` short-circuits on already-open
* bridges, so steady-state cost is one Map lookup per peer.
*/
private async proactiveBridgeFanout(): Promise<void> {
const rows = DatabaseService.getInstance().getDb().prepare(`
SELECT id FROM nodes
WHERE type = 'remote' AND mode = 'proxy' AND mesh_enabled = 1
ORDER BY id
`).all() as Array<{ id: number }>;
const queue = rows.map((r) => r.id);
const dialer = MeshProxyTunnelDialer.getInstance();
const worker = async (): Promise<void> => {
for (;;) {
const nodeId = queue.shift();
if (nodeId === undefined) return;
try {
await dialer.ensureBridge(nodeId);
} catch (err) {
this.logActivity({
source: 'mesh', level: 'warn', type: 'proxy-tunnel.open.fail',
nodeId,
message: `proxy-tunnel reconcile dial failed: ${sanitizeForLog((err as Error).message)}`,
details: { trigger: 'reconcile' },
});
}
await new Promise((r) => setTimeout(r, 250));
}
};
const workerCount = Math.min(4, Math.max(1, queue.length));
await Promise.all(Array.from({ length: workerCount }, () => worker()));
}
/**
* Schedule the proxy-tunnel reconcile tick. Interval is overridable via
* `SENCHO_MESH_RECONCILE_INTERVAL_MS` (default 60_000 ms) so an operator
* can tune the peer-reboot detection window. Idempotent: a second call
* is a no-op while the timer is live.
*/
private startBridgeReconcileLoop(): void {
if (this.bridgeReconcileTimer) return;
const raw = process.env.SENCHO_MESH_RECONCILE_INTERVAL_MS;
const parsed = raw === undefined ? Number.NaN : Number(raw);
const intervalMs = Number.isFinite(parsed) && parsed >= 1000 ? parsed : 60_000;
this.bridgeReconcileTimer = setInterval(() => {
void this.proactiveBridgeFanout().catch((err) => {
this.logActivity({
source: 'mesh', level: 'error', type: 'mesh.reconcile.fail',
message: `bridge reconcile threw: ${sanitizeForLog((err as Error).message)}`,
});
});
}, intervalMs);
this.bridgeReconcileTimer.unref?.();
}
private stopBridgeReconcileLoop(): void {
if (this.bridgeReconcileTimer) {
clearInterval(this.bridgeReconcileTimer);
this.bridgeReconcileTimer = undefined;
}
}
public getSenchoIp(): string | null {
return this.senchoIp;
}
public getMeshSubnet(): string {
return this.meshSubnet;
}
public getNetworkSetupError(): string | null {
return this.networkSetupError;
}
/**
* Typed mirror of `networkSetupError` for consumers that need a
* discriminator (e.g. `/api/health` and the Routing tab). Always returns
* a value: `{ ok: true, reason: 'ok' }` once `setupMeshNetwork` completes
* successfully, otherwise a typed failure shape.
*/
public getDataPlaneStatus(): MeshDataPlaneStatus {
return this.dataPlaneStatus;
}
/**
* Single recording path for every mesh-setup failure. Keeps the legacy
* `networkSetupError` string in sync, sets the typed `dataPlaneStatus`,
* and emits a `mesh.disable` activity entry. Callers pass `level: 'warn'`
* for expected conditions (`not_in_docker` in dev mode) and `'error'` for
* real failures.
*/
private recordSetupFailure(
reason: Exclude<MeshDataPlaneReason, 'ok' | 'not_started' | 'not_found'>,
err: unknown,
level: MeshActivityLevel,
// The subnet_invalid path fires before `this.meshSubnet` is assigned,
// so callers must pass the value they tried explicitly; deriving from
// the field would silently report DEFAULT_MESH_SUBNET instead of the
// bad CIDR the operator actually configured.
subnet: string,
): void {
const message = err instanceof Error ? err.message : String(err);
this.networkSetupError = message;
this.dataPlaneStatus = { ok: false, reason, message, subnet };
this.senchoIp = null;
const sanitized = sanitizeForLog(message);
this.logActivity({
source: 'mesh',
level,
type: 'mesh.disable',
message: `mesh data plane unavailable (${reason}): ${sanitized}`,
details: { reason, subnet },
});
// Mirror to console so the failure shows in `docker logs sencho`. The
// start() summary will also emit a boot line after setupMeshNetwork
// returns; this per-failure line gives the specific reason + Docker
// error message for diagnostic purposes.
const consoleLine = `[Mesh] data plane unavailable (${reason}, subnet ${subnet}): ${sanitized}`;
if (level === 'warn') console.warn(consoleLine);
else console.error(consoleLine);
}
/**
* Classify a throw from `ensureMeshNetwork` into a typed reason by matching
* on the error message. Docker's "pool overlaps with other one on this
* address space" surfaces as a 500 when another bridge owns the requested
* CIDR; the subnet-mismatch error is thrown synchronously from
* `ensureMeshNetwork` itself and contains the literal "exists with subnet".
*/
private classifyMeshNetworkError(err: unknown): 'subnet_overlap' | 'subnet_mismatch' | 'attach_failed' {
const m = err instanceof Error ? err.message : String(err);
if (/overlap/i.test(m)) return 'subnet_overlap';
if (/exists with subnet/i.test(m)) return 'subnet_mismatch';
return 'attach_failed';
}
/**
* Classify a throw from `ensureSelfAttached` (after its non-throwing
* not-in-Docker paths). Docker's "Address already in use" /
* "no available addresses" come back when another container squats
* `<network>+2`; anything else is a generic attach failure.
*/
private classifySelfAttachError(err: unknown): 'ip_in_use' | 'attach_failed' {
const m = err instanceof Error ? err.message : String(err);
if (/already in use|no available addresses|address already/i.test(m)) return 'ip_in_use';
return 'attach_failed';
}
/**
* Idempotent setup of the shared `sencho_mesh` Docker bridge network and
* Sencho's static attachment to it. Called once at boot before alias
* cache refresh. Failures here disable mesh routing for the lifetime of
* the process (forwarder still binds, but `ensureStackOverride` short-
* circuits because there is no IP to point user containers at).
*
* Skipped entirely when Sencho is not running inside Docker (dev mode,
* detected by an unset HOSTNAME env var or by the inspect lookup
* failing). The forwarder still runs locally for unit-test coverage.
*
* Three subnet-resolution paths:
* 1. **Operator-explicit.** `SENCHO_MESH_SUBNET` is set. Use exactly
* that subnet; a pre-existing `sencho_mesh` with a different subnet
* raises `subnet_mismatch`. Preserves the loud-config-error case.
* 2. **Adopt-existing.** `SENCHO_MESH_SUBNET` is unset and
* `sencho_mesh` already exists on the Docker daemon. Adopt its
* subnet (Docker is the source of truth across restarts).
* 3. **Candidate iteration.** Neither of the above. Walk
* `MESH_SUBNET_CANDIDATES` in order; first subnet Docker accepts
* wins. If every candidate overlaps an existing network, record
* `subnet_overlap` with a message naming every attempted subnet.
*/
private async setupMeshNetwork(): Promise<void> {
const envSubnet = process.env.SENCHO_MESH_SUBNET?.trim() || null;
// Validate the operator-supplied CIDR before any Docker call. An
// invalid env var is the operator's problem, not the daemon's, and
// reporting `subnet_invalid` from here means the diagnostic stays
// accurate even if the daemon is also broken.
if (envSubnet) {
try {
this.senchoIp = getSenchoIpFromSubnet(envSubnet);
this.meshSubnet = envSubnet;
} catch (err) {
this.recordSetupFailure('subnet_invalid', err, 'error', envSubnet);
return;
}
}
let existingSubnet: { subnet: string; ipRange: string | null } | null;
try {
existingSubnet = await this.inspectExistingMeshSubnet();
} catch (err) {
// A genuinely broken Docker daemon (404s return null, see
// `inspectExistingMeshSubnet`). Classify as `attach_failed`;
// calling create would just hit the same error one layer down.
this.recordSetupFailure(
'attach_failed',
err,
'error',
envSubnet ?? DEFAULT_MESH_SUBNET,
);
return;
}
if (envSubnet) {
if (existingSubnet && existingSubnet.subnet !== envSubnet) {
this.recordSetupFailure(
'subnet_mismatch',
new Error(
`${SENCHO_MESH_NETWORK} exists with subnet ${existingSubnet.subnet}, ` +
`expected ${envSubnet}. Remove the network or set SENCHO_MESH_SUBNET to match.`,
),
'error',
envSubnet,
);
return;
}
if (!existingSubnet) {
try {
await this.createMeshNetwork(envSubnet);
} catch (err) {
// TOCTOU: another process may have created `sencho_mesh`
// between our inspect (returned null) and our create
// (rejected with 409). Re-inspect; if the existing
// subnet matches what the operator requested, treat
// this as idempotent success (matches the prior
// ensureMeshNetwork 409-then-inspect behavior). Any
// other error or a mismatch reverts to the typed
// failure path.
const dockerErr = err as { statusCode?: number };
if (dockerErr?.statusCode === 409) {
const raceWinner = await this.inspectExistingMeshSubnet().catch(() => null);
if (raceWinner && raceWinner.subnet === envSubnet) {
// Adopt the race-winner's network; proceed to attach.
// Defer the legacy-reservation check to the shared
// helper below so the warn message is identical
// regardless of which branch arrived here.
existingSubnet = raceWinner;
} else if (raceWinner) {
this.recordSetupFailure(
'subnet_mismatch',
new Error(
`${SENCHO_MESH_NETWORK} exists with subnet ${raceWinner.subnet}, ` +
`expected ${envSubnet}. Remove the network or set SENCHO_MESH_SUBNET to match.`,
),
'error',
envSubnet,
);
return;
} else {
this.recordSetupFailure('attach_failed', err, 'error', envSubnet);
return;
}
} else {
this.recordSetupFailure(
this.classifyMeshNetworkError(err),
err,
'error',
envSubnet,
);
return;
}
}
}
} else if (existingSubnet) {
try {
this.senchoIp = getSenchoIpFromSubnet(existingSubnet.subnet);
this.meshSubnet = existingSubnet.subnet;
} catch (err) {
this.recordSetupFailure('subnet_invalid', err, 'error', existingSubnet.subnet);
return;
}
} else {
const tried: string[] = [];
let chosen: string | null = null;
let lastErr: unknown = null;
for (const candidate of MESH_SUBNET_CANDIDATES) {
tried.push(candidate);
try {
await this.createMeshNetwork(candidate);
chosen = candidate;
break;
} catch (err) {
const cls = this.classifyMeshNetworkError(err);
if (cls === 'subnet_overlap') {
lastErr = err;
continue;
}
// Non-overlap failures (e.g. daemon attach error) are not
// helped by trying another candidate; bail with the typed
// reason for this candidate. A 409 from another process
// racing to create `sencho_mesh` between our inspect and
// our create will classify as `attach_failed` here; the
// race is rare enough that we accept the bail and let the
// next process start adopt the now-existing network.
this.recordSetupFailure(cls, err, 'error', candidate);
return;
}
}
if (!chosen) {
this.recordSetupFailure(
'subnet_overlap',
new Error(
`every candidate subnet overlaps an existing Docker network on this host ` +
`(tried ${tried.join(', ')}). Set SENCHO_MESH_SUBNET to a free /24 and restart.` +
(lastErr instanceof Error ? ` Last error: ${lastErr.message}` : ''),
),
'error',
tried[tried.length - 1],
);
return;
}
try {
this.senchoIp = getSenchoIpFromSubnet(chosen);
this.meshSubnet = chosen;
} catch (err) {
// Hard-coded candidates are well-formed; defensive only.
this.recordSetupFailure('subnet_invalid', err, 'error', chosen);
return;
}
}
// Legacy-network advisory: if we adopted an existing `sencho_mesh`
// (rather than creating a fresh one) AND its IPAM block lacks the
// upper-half IPRange that biases Docker's auto-allocation away from
// `<network>+2`, warn the operator that a meshed workload
// restarting while Sencho is offline can squat that IP (F-13
// failure mode). The data plane still comes up; the warn is
// advisory and rides at `level: 'warn'` on the existing
// `mesh.enable` activity type plus a console mirror so it appears
// in `docker logs sencho`. Fresh-created networks always carry
// the bias (see `createMeshNetwork`).
if (existingSubnet && this.senchoIp) {
const expectedIpRange = getMeshIpRangeFromSubnet(this.meshSubnet);
if (existingSubnet.ipRange !== expectedIpRange) {
this.warnLegacyMeshReservation(existingSubnet.ipRange);
}
}
try {
await this.ensureSelfAttached();
} catch (err) {
this.recordSetupFailure(
this.classifySelfAttachError(err),
err,
'error',
this.meshSubnet,
);
return;
}
// `ensureSelfAttached` has non-throwing paths for the not-in-Docker
// case (HOSTNAME unset / inspect 404). Those paths call
// `recordSetupFailure` directly and leave `senchoIp` null, so a
// null here means the data plane is intentionally disabled (dev
// mode), not that the success path should run.
if (!this.senchoIp) return;
this.networkSetupError = null;
this.dataPlaneStatus = { ok: true, reason: 'ok', message: null, subnet: this.meshSubnet };
}
/**
* Emit the F-13 advisory: the operator is running on a `sencho_mesh`
* that pre-dates the upper-half IPRange bias, so Docker's auto-
* allocation can still hand Sencho's `<network>+2` IP to another
* meshed workload while Sencho is offline. Logged once per process at
* boot (this is only called from `setupMeshNetwork`, which itself
* runs once per `start()`). Mirrored to `console.warn` so it appears
* in `docker logs sencho`.
*/
private warnLegacyMeshReservation(actualIpRange: string | null): void {
const expected = this.senchoIp ? getMeshIpRangeFromSubnet(this.meshSubnet) : null;
const msg = `${SENCHO_MESH_NETWORK} adopted without the upper-half IPAM IPRange `
+ `(expected ${expected ?? 'a constrained IPRange'}); another container can squat ${this.senchoIp} `
+ `while Sencho is offline. To apply the bias: stop every meshed stack, `
+ `run \`docker network rm ${SENCHO_MESH_NETWORK}\`, then restart Sencho.`;
this.logActivity({
source: 'mesh',
level: 'warn',
type: 'mesh.enable',
message: msg,
details: {
subnet: this.meshSubnet,
expectedIpRange: expected,
actualIpRange,
},
});
console.warn(`[Mesh] ${msg}`);
}
/**
* Return the subnet and the IPRange of an existing `sencho_mesh`
* network, or null if the network does not exist. The `ipRange` field
* reflects `IPAM.Config[0].IPRange` on the daemon: null when the
* network pre-dates the upper-half bias or the operator chose not to
* set one, the configured CIDR otherwise. The adopt-existing path
* uses this to surface a one-time warn when running on a legacy
* network that is vulnerable to IP squatting while Sencho is offline.
* Docker's inspect endpoint surfaces 404 for the missing-network
* case; any other error is re-raised so the caller can classify it
* as `attach_failed`.
*/
private async inspectExistingMeshSubnet(): Promise<
{ subnet: string; ipRange: string | null } | null
> {
const dc = DockerController.getInstance(NodeRegistry.getInstance().getDefaultNodeId());
try {
const info = await dc.inspectNetwork(SENCHO_MESH_NETWORK) as {
IPAM?: {
Config?: Array<{
Subnet?: string;
IPRange?: string;
}>;
};
} | undefined;
const cfg = info?.IPAM?.Config?.[0];
if (!cfg?.Subnet) return null;
return {
subnet: cfg.Subnet,
ipRange: cfg.IPRange ?? null,
};
} catch (err) {
const e = err as { statusCode?: number };
if (e?.statusCode === 404) return null;
throw err;
}
}
/**
* Create the `sencho_mesh` bridge network with the given subnet. Throws
* the raw Dockerode error (including the 500 pool-overlap that
* `classifyMeshNetworkError` recognises) so callers can decide whether
* to retry on another candidate or bail.
*
* The IPAM block sets `IPRange` to the upper half of the subnet so
* Docker's auto-allocation pulls from `<network>+128` and up, leaving
* the lower half (which contains Sencho's static `<network>+2`) free
* for explicit pins only. This stops a meshed workload that restarts
* while Sencho is offline from grabbing `.2` by default. Sencho's own
* attach via `connectContainerToNetwork({ ipv4Address })` still binds
* `.2` because explicit pins can land anywhere in the subnet, not
* just inside the IPRange. (Aux-address reservation would also block
* the IP from auto-allocation, but libnetwork's `RequestAddress`
* rejects explicit pins to aux-reserved addresses too, which would
* defeat Sencho's own self-attach — verified against Docker 29.4.3.)
*/
private async createMeshNetwork(subnet: string): Promise<void> {
const dc = DockerController.getInstance(NodeRegistry.getInstance().getDefaultNodeId());
const ipRange = getMeshIpRangeFromSubnet(subnet);
await dc.createNetwork({
Name: SENCHO_MESH_NETWORK,
Driver: 'bridge',
Attachable: true,
IPAM: {
Config: [{
Subnet: subnet,
IPRange: ipRange,
}],
},
Labels: { 'io.sencho.mesh': 'true' },
});
}
/**
* Connect Sencho's own container to `sencho_mesh` at the static IP. Uses
* the `HOSTNAME` env var (which Docker sets to the container's short ID
* by default) to identify the container, mirroring the
* SelfUpdateService pattern. Skipped in dev mode where HOSTNAME is
* the laptop hostname and the inspect lookup would fail.
*/
private async ensureSelfAttached(): Promise<void> {
if (!this.senchoIp) return;
const hostname = process.env.HOSTNAME;
if (!hostname) {
this.recordSetupFailure(
'not_in_docker',
new Error('HOSTNAME unset; mesh routing disabled (not running in Docker?)'),
'warn',
this.meshSubnet,
);
return;
}
const dc = DockerController.getInstance(NodeRegistry.getInstance().getDefaultNodeId());
try {
await dc.connectContainerToNetwork(SENCHO_MESH_NETWORK, hostname, { ipv4Address: this.senchoIp });
} catch (err) {
const e = err as { statusCode?: number; message?: string };
if (e?.statusCode === 404) {
this.recordSetupFailure(
'not_in_docker',
new Error('self-container lookup failed (404); mesh routing disabled (not running in Docker?)'),
'warn',
this.meshSubnet,
);
return;
}
throw err;
}
}
/**
* One-shot snapshot of `sencho_mesh`: subnet, IPRange, and the set of
* attached containers (full ID + Name). Returns `null` when the
* network does not exist (Docker inspect 404). Used by the
* revalidator to keep `/api/health` fresh after the operator
* removes, recreates, or disconnects Sencho from the mesh at
* runtime. Real daemon errors propagate so the revalidator can
* preserve the prior status rather than flap it on a single
* transient.
*/
private async inspectMeshNetworkSnapshot(): Promise<
{
subnet: string;
ipRange: string | null;
containers: Array<{ id: string; name: string | null }>;
} | null
> {
const dc = DockerController.getInstance(NodeRegistry.getInstance().getDefaultNodeId());
try {
const info = await dc.inspectNetwork(SENCHO_MESH_NETWORK) as {
IPAM?: { Config?: Array<{ Subnet?: string; IPRange?: string }> };
Containers?: Record<string, { Name?: string }>;
} | undefined;
const cfg = info?.IPAM?.Config?.[0];
if (!cfg?.Subnet) return null;
const containers = Object.entries(info?.Containers ?? {}).map(([id, c]) => ({
id,
name: c?.Name ?? null,
}));
return {
subnet: cfg.Subnet,
ipRange: cfg.IPRange ?? null,
containers,
};
} catch (err) {
const e = err as { statusCode?: number };
if (e?.statusCode === 404) return null;
throw err;
}
}
/**
* Result of the self-attachment check during revalidation:
* - `attached`: Sencho's container is in the network's Containers map.
* - `detached`: Sencho's identity was determinable AND not present.
* - `unknown`: cannot determine (HOSTNAME unset / too short to be a
* safe container-ID prefix). Caller preserves prior status.
*/
private isSelfStillAttached(
containers: Array<{ id: string; name: string | null }>,
): 'attached' | 'detached' | 'unknown' {
const hostname = process.env.HOSTNAME;
if (!hostname) return 'unknown';
// Match either by container Name (operator set `--hostname`, the
// container's `Name` in the network's Containers map equals that
// value with a leading `/`) or by full container-ID prefix
// (Docker's default HOSTNAME is the 12-char short ID; the
// Containers map keys are the full 64-char IDs).
//
// The ID-prefix path is gated by two checks to avoid false
// positives: HOSTNAME must be all hex (`0-9a-f`) AND at least 12
// chars. Container IDs are pure hex, so a non-hex HOSTNAME (e.g.
// operator-set `--hostname sencho`) cannot collide with any
// container ID regardless of length, and a short hex HOSTNAME
// (e.g. `--hostname ab`) could match unrelated containers.
//
// Network-inspect's `Name` field carries a leading `/`; normalize
// before comparing against HOSTNAME which never has it.
const matchByName = (name: string | null): boolean => {
if (!name) return false;
const normalized = name.startsWith('/') ? name.slice(1) : name;
return normalized === hostname;
};
const isHexOnly = /^[0-9a-f]+$/.test(hostname);
const idPrefixUsable = isHexOnly && hostname.length >= 12;
for (const c of containers) {
if (matchByName(c.name)) return 'attached';
if (idPrefixUsable && c.id.startsWith(hostname)) return 'attached';
}
// No match.
// - Non-hex HOSTNAME (e.g. `sencho`, `mynode`): the operator set
// it explicitly. It cannot be a container-ID prefix. The Name
// path was the only reliable signal and it failed, so we are
// detached.
// - Hex HOSTNAME >= 12 chars: ID-prefix path was run and missed.
// Detached.
// - Hex HOSTNAME < 12 chars (rare, only when an operator passes
// `--hostname` with a hex string shorter than 12 chars): we
// could not safely ID-prefix-match and Name did not match. We
// genuinely do not know; preserve the prior status.
if (!isHexOnly) return 'detached';
if (hostname.length >= 12) return 'detached';
return 'unknown';
}
/**
* Reads the persisted `mesh_auto_recreate` global setting. Defaults to
* off (`'0'`); only `'1'` enables the auto-recreate behaviour in
* `attemptInPlaceRecreate`. Wrapped in try/catch so a transient DB
* failure (e.g. SQLite briefly locked during a backup) cannot crash
* the revalidator timer; on failure we default to off so a missing
* read never accidentally triggers a Docker mutation.
*/
private isMeshAutoRecreateEnabled(): boolean {
try {
const settings = DatabaseService.getInstance().getGlobalSettings();
return settings['mesh_auto_recreate'] === '1';
} catch (err) {
console.warn(
'[MeshService] could not read mesh_auto_recreate setting:',
sanitizeForLog((err as Error).message),
);
return false;
}
}
/**
* Single transition path for `dataPlaneStatus`. Two-tier semantics:
* - Fields (`message`, `subnet`) are always refreshed when they
* drift, so `/api/health` never carries stale numbers (e.g. two
* consecutive `subnet_mismatch` observations against different
* external subnets both show their own remote subnet).
* - Activity ring + `console.{log,warn}` mirrors fire only when
* the `reason` discriminator actually changes, so the 10s timer
* can tick indefinitely on a stable mesh without spamming the
* log surface.
* `networkSetupError` follows the same coherence rule it had before
* the revalidator landed: cleared on recovery to `ok`, otherwise
* tracks the typed status's `message`.
*/
private transitionDataPlane(next: MeshDataPlaneStatus): void {
const prev = this.dataPlaneStatus;
const reasonChanged = prev.reason !== next.reason;
const fieldsChanged =
reasonChanged ||
prev.message !== next.message ||
prev.subnet !== next.subnet ||
prev.ok !== next.ok;
if (!fieldsChanged) return;
this.dataPlaneStatus = next;
if (next.ok) {
this.networkSetupError = null;
} else if (next.message) {
// Keep the legacy raw-error string in step with the typed
// discriminator so callers that still read `networkSetupError`
// (optInStack, applyLocalOverride, regenerateAllOverrides) see
// the same message the typed status surfaces.
this.networkSetupError = next.message;
}
if (!reasonChanged) return;
const line = next.ok
? `[Mesh] data plane recovered (reason ${prev.reason} -> ${next.reason}, subnet ${next.subnet})`
: `[Mesh] data plane changed (reason ${prev.reason} -> ${next.reason}, subnet ${next.subnet}): ${next.message ?? 'no detail'}`;
if (next.ok) console.log(line);
else console.warn(line);
this.logActivity({
source: 'mesh',
level: next.ok ? 'info' : 'warn',
type: next.ok ? 'mesh.enable' : 'mesh.disable',
message: line,
details: { prevReason: prev.reason, nextReason: next.reason, subnet: next.subnet },
});
}
/**
* 10s tick body. Reports current Docker reality into
* `dataPlaneStatus`; never mutates `senchoIp` or `meshSubnet`
* (those are pinned at boot to keep override files stable). The
* `mesh_auto_recreate` setting opts into a single bounded
* recreate-on-the-same-subnet attempt via `attemptInPlaceRecreate`
* when the network has been removed. Public so unit tests can call
* it directly without manipulating timers.
*
* Short-circuits in states where the truth cannot have changed
* within this process: `not_started` (boot still in flight),
* `not_in_docker` (dev mode; HOSTNAME unset for the whole process),
* and `subnet_invalid` (env config error; resolved only by restart
* with new env).
*/
public async revalidateDataPlane(): Promise<void> {
if (this.dataPlaneRevalidateInFlight) return;
const reason = this.dataPlaneStatus.reason;
if (reason === 'not_started' || reason === 'not_in_docker' || reason === 'subnet_invalid') {
return;
}
this.dataPlaneRevalidateInFlight = true;
try {
let snapshot: Awaited<ReturnType<typeof this.inspectMeshNetworkSnapshot>>;
try {
snapshot = await this.inspectMeshNetworkSnapshot();
} catch {
// Transient Docker daemon failure. Preserve current status;
// next tick retries. Anti-flap by design.
return;
}
if (snapshot === null) {
// Anti-flap during the auto-recreate throttle window:
// `attemptInPlaceRecreate` may have just classified the
// failure (`subnet_overlap`, `ip_in_use`, `attach_failed`).
// Those reasons are more actionable than the generic
// `not_found`, and the network is still missing because the
// recreate could not finish, not because the operator just
// removed it. Preserve the recreate-failure status until
// the throttle elapses and the next attempt re-classifies.
const prev = this.dataPlaneStatus;
const inThrottleWindow =
this.lastRecreateAttemptAt > 0 &&
Date.now() - this.lastRecreateAttemptAt < MESH_RECREATE_THROTTLE_MS;
const isRecreateFailureReason =
prev.reason === 'subnet_overlap' ||
prev.reason === 'subnet_mismatch' ||
prev.reason === 'ip_in_use' ||
prev.reason === 'attach_failed';
if (inThrottleWindow && isRecreateFailureReason) {
return;
}
this.transitionDataPlane({
ok: false,
reason: 'not_found',
message: `${SENCHO_MESH_NETWORK} is not present on this host. Mesh routing is offline; restart Sencho to recreate the network.`,
subnet: this.meshSubnet,
});
if (this.isMeshAutoRecreateEnabled()) {
await this.attemptInPlaceRecreate();
}
return;
}
if (this.meshSubnet && snapshot.subnet !== this.meshSubnet) {
this.transitionDataPlane({
ok: false,
reason: 'subnet_mismatch',
message: `${SENCHO_MESH_NETWORK} now uses ${snapshot.subnet}, Sencho is configured for ${this.meshSubnet}. Restart Sencho to adopt the new subnet.`,
subnet: this.meshSubnet,
});
return;
}
if (this.senchoIp) {
const attachment = this.isSelfStillAttached(snapshot.containers);
if (attachment === 'unknown') {
// Cannot determine our own identity (HOSTNAME unset or
// too short to be a safe ID prefix). Preserve the prior
// status; the boot-time `ensureSelfAttached` already
// classified the not-in-Docker case.
return;
}
if (attachment === 'detached') {
this.transitionDataPlane({
ok: false,
reason: 'attach_failed',
message: `Sencho is no longer attached to ${SENCHO_MESH_NETWORK}; restart Sencho to re-attach.`,
subnet: this.meshSubnet,
});
return;
}
}
this.transitionDataPlane({
ok: true,
reason: 'ok',
message: null,
subnet: this.meshSubnet,
});
} finally {
this.dataPlaneRevalidateInFlight = false;
}
}
/**
* Records a runtime recreate failure WITHOUT clearing `senchoIp`.
* Distinct from `recordSetupFailure`, which is boot-only and clears
* the IP as part of the failure-disables-mesh contract. At runtime
* the boot-resolved IP must survive a transient failure so a later
* successful attempt can drive `ensureSelfAttached` and re-bind
* Sencho to the freshly created network. Otherwise the next
* revalidator tick that observes the new network would skip the
* attachment check (gated on `this.senchoIp`) and silently report
* `ok` while Sencho is in fact detached.
*/
private recordRecreateFailure(
reason: Exclude<MeshDataPlaneReason, 'ok' | 'not_started' | 'not_found'>,
err: unknown,
subnet: string,
): void {
const message = err instanceof Error ? err.message : String(err);
this.transitionDataPlane({
ok: false,
reason,
message,
subnet,
});
}
/**
* Opt-in auto-recreate path. Only invoked from the revalidator when
* the network was observed missing AND the operator has flipped
* `mesh_auto_recreate` to `'1'` in Settings -> System. Hard-prefers
* `this.meshSubnet` (the subnet chosen at boot) and never iterates
* the candidate list, because changing the chosen subnet here would
* invalidate every existing `extra_hosts` override on disk and
* silently break cross-node routing for opted-in stacks. A real
* overlap on the prior subnet is reported via `subnet_overlap` so
* the operator can take action.
*
* Throttled by MESH_RECREATE_THROTTLE_MS to keep a persistent
* conflict from spamming the daemon on every 10s tick.
*/
private async attemptInPlaceRecreate(): Promise<void> {
const now = Date.now();
if (now - this.lastRecreateAttemptAt < MESH_RECREATE_THROTTLE_MS) {
return;
}
this.lastRecreateAttemptAt = now;
// A revalidator-driven recreate is only meaningful when the
// boot-resolved Sencho IP is known. If `senchoIp` is null,
// setupMeshNetwork either never ran (impossible: revalidator
// short-circuits on `not_started`) or recorded a hard failure
// (`subnet_invalid` / `not_in_docker`, both of which also
// short-circuit). Defensive bail.
if (!this.senchoIp) return;
this.logActivity({
source: 'mesh',
level: 'info',
type: 'mesh.enable',
message: `attempting auto-recreate of ${SENCHO_MESH_NETWORK} at ${this.meshSubnet}`,
details: { subnet: this.meshSubnet },
});
try {
await this.createMeshNetwork(this.meshSubnet);
} catch (err) {
// Preserve `senchoIp` so a later successful retry (after the
// throttle elapses + the overlap clears) can re-attach.
this.recordRecreateFailure(
this.classifyMeshNetworkError(err),
err,
this.meshSubnet,
);
return;
}
try {
await this.ensureSelfAttached();
} catch (err) {
// Same preservation rationale; the attach can succeed on a
// later attempt (e.g. when whatever was squatting the IP
// gets out of the way). The network now exists, so the next
// revalidator tick will surface the attachment failure
// honestly through the snapshot path.
this.recordRecreateFailure(
this.classifySelfAttachError(err),
err,
this.meshSubnet,
);
return;
}
this.transitionDataPlane({
ok: true,
reason: 'ok',
message: null,
subnet: this.meshSubnet,
});
}
/**
* Bind the forwarder's listeners to every alias port across the fleet
* and release any listeners no longer in the alias set. Called from
* `start`, after each `refreshAliasCache` tick, and after every
* opt-in / opt-out / disable so the bound port set follows the DB
* state.
*
* Every meshed node binds every alias port (not just ports it owns)
* because alias DNS entries resolve to the SOURCE node's Sencho IP, so
* the source node is where the inbound TCP connection lands.
* `handleAccept` then dispatches to the same-node fast path or the
* cross-node bridge based
* on the resolved alias's owner. Fleet-wide port collisions are
* blocked at opt-in time (`optInStack` checks `aliasByPort`), so
* binding every alias port is unambiguous.
*/
private async syncForwarderListeners(): Promise<void> {
const localNodeId = NodeRegistry.getInstance().getDefaultNodeId();
const wantPorts = new Set<number>(this.aliasByPort.keys());
const havePorts = new Set(this.forwarder.getListenerPorts());
for (const port of havePorts) {
if (!wantPorts.has(port)) {
await this.forwarder.unlisten(port);
this.logActivity({
source: 'mesh', level: 'info', type: 'forwarder.unlisten',
nodeId: localNodeId, message: `forwarder released port ${port}`,
});
}
}
for (const port of wantPorts) {
if (havePorts.has(port)) continue;
try {
await this.forwarder.listen(port);
this.logActivity({
source: 'mesh', level: 'info', type: 'forwarder.listen',
nodeId: localNodeId, message: `forwarder listening on port ${port}`,
});
} catch (err) {
this.logActivity({
source: 'mesh', level: 'error', type: 'forwarder.error',
nodeId: localNodeId,
message: `forwarder bind failed on port ${port}: ${sanitizeForLog((err as Error).message)}`,
details: { port },
});
}
}
}
// --- Activity log ---
public logActivity(event: Omit<MeshActivityEvent, 'ts'>): void {
const full: MeshActivityEvent = { ts: Date.now(), ...event };
this.activity.push(full);
if (this.activity.length > ACTIVITY_BUFFER_SIZE) this.activity.shift();
for (const listener of this.activityListeners) {
try { listener(full); } catch { /* ignore */ }
}
if (event.alias && event.level === 'error') {
this.routeErrorMap.set(event.alias, { ts: full.ts, message: event.message });
}
}
/**
* Developer-mode diagnostic log for the mesh data plane. Off in production
* by default; gated on the shared `developer_mode` setting via
* isDebugEnabled(). Each value is run through redactSensitiveText and then
* sanitizeForLog, so a secret-shaped value (Bearer token, JWT, credentialed
* URL) is redacted and control characters are stripped before it reaches the
* log surface, even if a future caller passes one. Safe at per-operation,
* per-accept (once per new TCP connection), and per-60s-tick cadences; never
* call it from the per-frame relay loops in openSameNode / openCrossNode.
*/
private logDiag(message: string, details: Record<string, unknown> = {}): void {
if (!isDebugEnabled()) return;
const cleaned = Object.fromEntries(
Object.entries(details).map(([key, value]) => [key, sanitizeForLog(redactSensitiveText(value))]),
);
console.debug(`[Mesh:diag] ${message}`, cleaned);
}
public getActivity(filter?: { alias?: string; source?: MeshActivitySource; level?: MeshActivityLevel; limit?: number }): MeshActivityEvent[] {
let out = this.activity;
if (filter?.alias) out = out.filter((e) => e.alias === filter.alias);
if (filter?.source) out = out.filter((e) => e.source === filter.source);
if (filter?.level) out = out.filter((e) => e.level === filter.level);
const limit = filter?.limit ?? 200;
return out.slice(-limit);
}
public subscribeActivity(listener: (e: MeshActivityEvent) => void): () => void {
this.activityListeners.add(listener);
return () => { this.activityListeners.delete(listener); };
}
// --- Opt-in / opt-out ---
public async optInStack(nodeId: number, stackName: string, actor: string): Promise<void> {
return this.runMeshNodeMutation(nodeId, () => this.optInStackExclusive(nodeId, stackName, actor));
}
private async optInStackExclusive(nodeId: number, stackName: string, actor: string): Promise<void> {
this.logDiag('opt-in start', { nodeId, stackName, actor });
const t0 = Date.now();
if (!isValidStackName(stackName)) {
throw new MeshError('denied', `invalid stack name: ${stackName}`);
}
if (!this.senchoIp) {
throw new MeshError(
'denied',
this.networkSetupError || 'mesh data plane unavailable (mesh network setup did not complete)',
);
}
const db = DatabaseService.getInstance();
if (db.isMeshStackEnabled(nodeId, stackName)) return;
const services = await this.inspectStackServices(nodeId, stackName);
if (services.length === 0) {
throw new MeshError('no_target', `stack ${stackName} has no running services on this node`);
}
const newPorts = new Set<number>();
for (const svc of services) for (const p of svc.ports) newPorts.add(p);
if (newPorts.size === 0) {
throw new MeshError(
'no_target',
`stack ${stackName} has no service ports to mesh (every service declared ports: [])`,
);
}
if (newPorts.has(SENCHO_LISTEN_PORT)) {
throw new MeshError(
'port_collision',
`port ${SENCHO_LISTEN_PORT} is reserved for the Sencho API and cannot be used by a meshed service`,
);
}
for (const port of newPorts) {
const existing = this.aliasByPort.get(port);
if (existing) {
throw new MeshError(
'port_collision',
`port ${port} is already claimed by ${existing.host}`,
);
}
}
db.insertMeshStack(nodeId, stackName, actor);
try {
await this.refreshAliasCache();
await this.syncForwarderListeners();
} catch (error) {
db.deleteMeshStack(nodeId, stackName);
try {
await this.refreshAliasCache();
await this.syncForwarderListeners();
} catch (rollbackError) {
console.warn('[MeshService] Failed to refresh aliases after opt-in rollback:', sanitizeForLog(getErrorMessage(rollbackError, 'unknown')));
}
throw error;
}
// Push the just-opted-in stack's override loudly. Explicit target
// rejection rolls back the row. A remote transport failure is
// ambiguous because the target may already have committed, so retain
// authority and let normal regeneration reconcile it.
try {
await this.pushOverrideToNode(nodeId, stackName);
} catch (err) {
const node = db.getNode(nodeId);
const explicitlyRejected = node?.type !== 'remote' || err instanceof MeshError;
if (explicitlyRejected) {
db.deleteMeshStack(nodeId, stackName);
await this.refreshAliasCache();
await this.syncForwarderListeners();
} else {
this.logActivity({
source: 'mesh', level: 'warn', type: 'forwarder.error',
nodeId,
message: `mesh override push outcome unknown for ${stackName}; retaining opt-in authority for reconciliation`,
details: { stackName },
});
}
throw err;
}
// Regenerate every other meshed stack's override across the fleet
// so they pick up the new alias entry. The just-opted-in stack was
// already pushed above; skip the (nodeId, stackName) tuple to
// avoid a duplicate round-trip. Best-effort; per-stack failures
// surface as forwarder.error activity events.
await this.regenerateOverridesAcrossFleet(nodeId, stackName);
// Recompose every previously-meshed container so the new alias
// actually lands in /etc/hosts. The override file alone is not
// enough: extra_hosts is read at container creation, so prior
// containers need to be recreated. Skip the just-opted-in tuple
// because the explicit triggerRedeploy below already covers it.
this.cascadeRecomposeAcrossFleet(nodeId, stackName, actor);
this.triggerRedeploy(nodeId, stackName, actor);
this.logDiag('opt-in complete', { nodeId, stackName, services: services.length, ms: Date.now() - t0 });
this.logActivity({
source: 'mesh', level: 'info', type: 'opt_in',
nodeId, message: `opt-in ${stackName}`, details: { actor },
});
db.insertAuditLog({
timestamp: Date.now(), username: actor, method: 'POST',
path: `/api/mesh/nodes/${nodeId}/stacks/${stackName}/opt-in`,
status_code: 200, node_id: nodeId, ip_address: '127.0.0.1',
summary: `Sencho Mesh: opted ${stackName} into the mesh`,
});
}
public async optOutStack(nodeId: number, stackName: string, actor: string): Promise<void> {
return this.runMeshNodeMutation(nodeId, () => this.optOutStackExclusive(nodeId, stackName, actor));
}
private async optOutStackExclusive(nodeId: number, stackName: string, actor: string): Promise<void> {
this.logDiag('opt-out start', { nodeId, stackName, actor });
if (!isValidStackName(stackName)) {
throw new MeshError('denied', `invalid stack name: ${stackName}`);
}
const db = DatabaseService.getInstance();
if (!db.isMeshStackEnabled(nodeId, stackName)) return;
db.deleteMeshStack(nodeId, stackName);
try {
await this.removeOverrideFromNode(nodeId, stackName);
} catch (error) {
db.insertMeshStack(nodeId, stackName, actor);
throw error;
}
try {
await this.refreshAliasCache();
await this.syncForwarderListeners();
} catch (error) {
console.warn('[MeshService] Failed to refresh aliases after committed opt-out:', sanitizeForLog(getErrorMessage(error, 'unknown')));
}
// The opted-out row is already deleted, so listMeshStacks() will not
// include it. Walk the remaining fleet-wide rows so every other
// meshed stack regenerates its override without the dropped alias.
await this.regenerateOverridesAcrossFleet();
// Recompose every still-meshed container so the dropped alias
// exits /etc/hosts. Skip args are absent because the opted-out
// row is already gone from listMeshStacks; the explicit
// triggerRedeploy below recomposes the opted-out stack itself
// (with the override file removed) so its container drops the
// entries it owned.
this.cascadeRecomposeAcrossFleet(undefined, undefined, actor);
this.triggerRedeploy(nodeId, stackName, actor);
this.logActivity({
source: 'mesh', level: 'info', type: 'opt_out',
nodeId, message: `opt-out ${stackName}`, details: { actor },
});
db.insertAuditLog({
timestamp: Date.now(), username: actor, method: 'POST',
path: `/api/mesh/nodes/${nodeId}/stacks/${stackName}/opt-out`,
status_code: 200, node_id: nodeId, ip_address: '127.0.0.1',
summary: `Sencho Mesh: opted ${stackName} out of the mesh`,
});
}
public async enableForNode(nodeId: number): Promise<void> {
return this.runMeshNodeMutation(nodeId, () => this.enableForNodeExclusive(nodeId));
}
private async enableForNodeExclusive(nodeId: number): Promise<void> {
this.logDiag('enable-for-node', { nodeId });
DatabaseService.getInstance().setNodeMeshEnabled(nodeId, true);
this.logActivity({
source: 'mesh', level: 'info', type: 'mesh.enable',
nodeId, message: `mesh enabled on node ${nodeId}`,
});
// When mesh is enabled on a proxy peer, dial the persistent bridge
// immediately so the next forward (or peer-initiated reverse)
// request has the WS already up. Fire-and-forget; failures are
// logged by the dialer.
const node = DatabaseService.getInstance().getNode(nodeId);
if (node && node.type === 'remote' && node.mode === 'proxy') {
void MeshProxyTunnelDialer.getInstance().ensureBridge(nodeId).catch((err) => {
console.warn(`[Mesh] proxy-tunnel dial on mesh-enable failed for node ${nodeId}: ${(err as Error).message}`);
});
}
}
public async disableForNode(
nodeId: number,
actor: string = 'system:mesh.disable',
): Promise<void> {
return this.runMeshNodeMutation(nodeId, () => this.disableForNodeExclusive(nodeId, actor));
}
private async disableForNodeExclusive(nodeId: number, actor: string): Promise<void> {
this.logDiag('disable-for-node start', { nodeId, actor });
const t0 = Date.now();
const db = DatabaseService.getInstance();
const stacks = db.listMeshStacks(nodeId);
// Dispatch DELETE /api/mesh/local-override/:stack for remote nodes
// (pilot or proxy) so the override file pushed earlier via
// applyLocalOverride is removed; falls back to local deletion for
// local nodes. Parallelize per the regenerateOverridesForNode
// rationale: each remote call is its own HTTP round-trip, so
// awaiting sequentially turns N stacks into N serialised DELETEs.
// `allSettled` so a single failure does not abort the others.
const removals = await Promise.allSettled(
stacks.map((s) => this.removeOverrideFromNode(nodeId, s.stack_name)),
);
const failed: string[] = [];
const removed: typeof stacks = [];
removals.forEach((result, index) => {
const stack = stacks[index];
if (result.status === 'fulfilled') {
db.deleteMeshStack(nodeId, stack.stack_name);
removed.push(stack);
} else {
failed.push(stack.stack_name);
}
});
if (failed.length === 0) db.setNodeMeshEnabled(nodeId, false);
try {
await this.refreshAliasCache();
await this.syncForwarderListeners();
} catch (error) {
console.warn('[MeshService] Failed to refresh aliases after committed node disable changes:', sanitizeForLog(getErrorMessage(error, 'unknown')));
}
// Mirror optOutStack: regenerate every remaining node's override
// without the dropped aliases, recompose the rest of the fleet so
// their containers shed the stale extra_hosts, and redeploy the
// disabled node's own stacks so their containers detach from the
// sencho_mesh network and lose the alias entries they owned.
await this.regenerateOverridesAcrossFleet();
this.cascadeRecomposeAcrossFleet(undefined, undefined, actor);
for (const s of removed) {
this.triggerRedeploy(nodeId, s.stack_name, actor);
}
if (failed.length > 0) {
throw new MeshError(
'push_failed',
`Could not disable Mesh on node ${nodeId}: override removal failed for ${failed.join(', ')}.`,
);
}
this.logDiag('disable-for-node complete', { nodeId, stacks: stacks.length, ms: Date.now() - t0 });
this.logActivity({
source: 'mesh', level: 'info', type: 'mesh.disable',
nodeId, message: `mesh disabled on node ${nodeId}`,
});
}
private readonly meshNodeMutations = new Map<number, Promise<void>>();
private async runMeshNodeMutation<T>(nodeId: number, operation: () => Promise<T>): Promise<T> {
const previous = this.meshNodeMutations.get(nodeId) ?? Promise.resolve();
let release!: () => void;
const pending = new Promise<void>((resolve) => {
release = resolve;
});
this.meshNodeMutations.set(nodeId, pending);
await previous;
try {
return await operation();
} finally {
release();
if (this.meshNodeMutations.get(nodeId) === pending) this.meshNodeMutations.delete(nodeId);
}
}
// --- Override file management ---
public async ensureStackOverride(nodeId: number, stackName: string): Promise<string | null> {
if (!isValidStackName(stackName)) return null;
const db = DatabaseService.getInstance();
const dir = this.overrideDirFor(nodeId);
if (!db.isMeshStackEnabled(nodeId, stackName)) {
// Pilot nodes intentionally have no mesh_stacks rows (opt-in state
// lives on central per the C-3 design). Use file-presence as the
// fallback: if central pushed an override via applyLocalOverride, return
// that path so ComposeService picks it up on the next deploy.
if (process.env.SENCHO_MODE !== 'pilot') return null;
const file = path.resolve(dir, `${path.basename(stackName)}.override.yml`);
if (!isPathWithinBase(file, dir)) return null;
try {
await fs.access(file);
return file;
} catch {
return null;
}
}
if (!this.senchoIp) return null;
const aliases: MeshAlias[] = Array.from(this.aliasCache.values()).map((a) => ({ host: a.host }));
const serviceNames = await this.getDeclaredStackServiceNames(stackName, nodeId);
await fs.mkdir(dir, { recursive: true });
// path.basename mirrors the applyLocalOverride pattern (and is
// the form CodeQL's path-injection model recognizes).
const file = path.resolve(dir, `${path.basename(stackName)}.override.yml`);
if (!isPathWithinBase(file, dir)) return null;
// Defensive fallback: a deploy that runs `compose down` immediately
// before `compose up` removes the containers, but the compose file
// is still on disk so getDeclaredStackServiceNames returns the
// declared services. The fallback below covers the much narrower
// case where the compose file itself is unreadable (permission
// glitch, transient FS error, mid-write rename); in that case
// keep any existing override rather than overwrite with `services: {}`.
if (serviceNames.length === 0) {
const existing = await this.readExistingOverrideServiceNames(dir, stackName);
if (existing.length > 0) {
this.logActivity({
source: 'mesh', level: 'warn', type: 'mesh.override.preserved',
nodeId,
message: `mesh override preserved for ${stackName}: declared services unreadable, keeping ${existing.length} existing entries`,
details: { stackName, preservedServices: existing },
});
return file;
}
}
const yaml = generateOverrideYaml({
services: serviceNames,
aliases,
senchoIp: this.senchoIp,
});
await fs.writeFile(file, yaml, 'utf8');
return file;
}
/**
* Render and write a mesh override on the LOCAL node's filesystem from
* a fleet-wide alias list supplied by central. The pilot looks up its
* own service names and uses its own static IP, so each node's
* override resolves alias hostnames to that node's local Sencho.
* This is critical because each node has its own `sencho_mesh`
* network with its own subnet. Returns the absolute path on success
* or null if path validation rejects the input.
*/
public async applyLocalOverride(
stackName: string,
aliases: MeshAlias[],
portAliases?: MeshGlobalAlias[],
): Promise<string | null> {
if (!isValidStackName(stackName)) return null;
const senchoIp = this.senchoIp;
if (!senchoIp) {
throw new MeshError(
'push_failed',
this.networkSetupError || 'mesh data plane unavailable on this node',
);
}
const localNodeId = NodeRegistry.getInstance().getDefaultNodeId();
const lock = await StackOpLockService.getInstance().runExclusive(
localNodeId,
stackName,
'deploy',
'system:mesh.override',
() => this.applyLocalOverrideExclusive(localNodeId, stackName, aliases, senchoIp, portAliases),
);
if (!lock.ran) {
throw new MeshError(
'push_failed',
`Cannot apply Mesh override for "${stackName}": another operation (${lock.existing.action}) is already in progress.`,
);
}
return lock.result;
}
private async applyLocalOverrideExclusive(
localNodeId: number,
stackName: string,
aliases: MeshAlias[],
senchoIp: string,
portAliases?: MeshGlobalAlias[],
): Promise<string | null> {
const serviceNames = await this.getDeclaredStackServiceNames(stackName, localNodeId);
const dir = this.overrideDirFor(localNodeId);
await fs.mkdir(dir, { recursive: true });
// path.basename strips any directory component as defense-in-depth
// on top of isValidStackName + isPathWithinBase. Recognized by
// CodeQL's path-injection model.
const file = path.resolve(dir, `${path.basename(stackName)}.override.yml`);
if (!isPathWithinBase(file, dir)) return null;
// Defensive fallback (mirror of ensureStackOverride): keep any
// existing override when the compose file is transiently
// unreadable. The remote that pushed this update will retry on
// its next regen tick, so a one-shot read failure should not
// wipe out a working override.
if (serviceNames.length === 0) {
const existing = await this.readExistingOverrideServiceNames(dir, stackName);
if (existing.length > 0) {
this.logActivity({
source: 'mesh', level: 'warn', type: 'mesh.override.preserved',
nodeId: localNodeId,
message: `mesh override preserved for ${stackName}: declared services unreadable, keeping ${existing.length} existing entries`,
details: { stackName, preservedServices: existing },
});
this.recordLocalOverrideIntent(localNodeId, stackName);
return file;
}
}
const yaml = generateOverrideYaml({
services: serviceNames,
aliases,
senchoIp,
});
const previousYaml = await this.readOverrideContent(file);
await this.writeOverrideAtomically(file, yaml);
try {
this.recordLocalOverrideIntent(localNodeId, stackName);
} catch (error) {
await this.restoreOverrideAfterAuthorityFailure(file, previousYaml);
throw error;
}
if (portAliases && portAliases.length > 0) {
this.pilotAliasOverlay.set(stackName, portAliases);
try {
await this.refreshAliasCache();
await this.syncForwarderListeners();
} catch (error) {
console.warn('[MeshService] Failed to refresh aliases after committed override apply:', sanitizeForLog(getErrorMessage(error, 'unknown')));
}
}
return file;
}
/**
* Delete a previously applied local override (mirror of
* `applyLocalOverride`). Used by central when a stack is opted out.
*/
public async removeLocalOverride(stackName: string): Promise<void> {
if (!isValidStackName(stackName)) return;
const localNodeId = NodeRegistry.getInstance().getDefaultNodeId();
const lock = await StackOpLockService.getInstance().runExclusive(
localNodeId,
stackName,
'deploy',
'system:mesh.override',
() => this.removeLocalOverrideExclusive(localNodeId, stackName),
);
if (!lock.ran) {
throw new MeshError(
'push_failed',
`Cannot remove Mesh override for "${stackName}": another operation (${lock.existing.action}) is already in progress.`,
);
}
}
private async removeLocalOverrideExclusive(localNodeId: number, stackName: string): Promise<void> {
const dir = this.overrideDirFor(localNodeId);
const file = path.resolve(dir, `${path.basename(stackName)}.override.yml`);
if (!isPathWithinBase(file, dir)) return;
const db = DatabaseService.getInstance();
const hadIntent = db.isMeshStackEnabled(localNodeId, stackName);
if (hadIntent) db.deleteMeshStack(localNodeId, stackName);
try {
await fs.unlink(file);
} catch (error) {
if (!(error instanceof Error && 'code' in error && error.code === 'ENOENT')) {
if (hadIntent) db.insertMeshStack(localNodeId, stackName, null);
throw error;
}
}
if (this.pilotAliasOverlay.delete(stackName)) {
try {
await this.refreshAliasCache();
await this.syncForwarderListeners();
} catch (error) {
console.warn('[MeshService] Failed to refresh aliases after committed override removal:', sanitizeForLog(getErrorMessage(error, 'unknown')));
}
}
}
private async writeOverrideAtomically(file: string, yaml: string): Promise<void> {
const dir = path.dirname(file);
const tempFile = path.resolve(dir, `.${path.basename(file)}.${randomUUID()}.tmp`);
if (!isPathWithinBase(tempFile, dir)) throw new Error('Invalid Mesh override temporary path');
let handle: Awaited<ReturnType<typeof fs.open>> | null = null;
try {
handle = await fs.open(tempFile, 'wx');
await handle.writeFile(yaml, 'utf8');
await handle.sync();
await handle.close();
handle = null;
await fs.rename(tempFile, file);
} catch (error) {
if (handle) {
try { await handle.close(); } catch (closeError) {
console.warn('[MeshService] Failed to close temporary override:', sanitizeForLog(getErrorMessage(closeError, 'unknown')));
}
}
try {
await fs.unlink(tempFile);
} catch (cleanupError) {
if (!(cleanupError instanceof Error && 'code' in cleanupError && cleanupError.code === 'ENOENT')) {
console.warn('[MeshService] Failed to clean up temporary override:', sanitizeForLog(getErrorMessage(cleanupError, 'unknown')));
}
}
throw error;
}
}
private async readOverrideContent(file: string): Promise<string | null> {
try {
return await fs.readFile(file, 'utf8');
} catch (error) {
if (error instanceof Error && 'code' in error && error.code === 'ENOENT') return null;
throw error;
}
}
private async restoreOverrideAfterAuthorityFailure(file: string, previousYaml: string | null): Promise<void> {
try {
if (previousYaml === null) {
await fs.unlink(file);
} else {
await this.writeOverrideAtomically(file, previousYaml);
}
} catch (error) {
if (previousYaml === null && error instanceof Error && 'code' in error && error.code === 'ENOENT') return;
console.warn('[MeshService] Failed to restore override after authority error:', sanitizeForLog(getErrorMessage(error, 'unknown')));
}
}
private async removeStackOverride(nodeId: number, stackName: string): Promise<void> {
if (!isValidStackName(stackName)) return;
const dir = this.overrideDirFor(nodeId);
const file = path.resolve(dir, `${path.basename(stackName)}.override.yml`);
if (!isPathWithinBase(file, dir)) return;
try {
await fs.unlink(file);
} catch (error) {
if (!(error instanceof Error && 'code' in error && error.code === 'ENOENT')) throw error;
}
}
private overrideDirFor(nodeId: number): string {
const dataDir = process.env.DATA_DIR || '/app/data';
return path.join(dataDir, 'mesh', 'overrides', String(nodeId));
}
private recordLocalOverrideIntent(nodeId: number, stackName: string): void {
if (process.env.SENCHO_MODE === 'pilot') return;
const db = DatabaseService.getInstance();
if (db.isMeshStackEnabled(nodeId, stackName)) return;
db.insertMeshStack(nodeId, stackName, null);
}
private async regenerateOverridesForNode(nodeId: number, skipStack?: string): Promise<void> {
const db = DatabaseService.getInstance();
const stacks = db.listMeshStacks(nodeId);
// Push all overrides in parallel: each remote-node call is its own
// HTTP round-trip, so awaiting sequentially turns N stacks into N
// serialised PUTs. `allSettled` so a single failure does not abort
// the others.
await Promise.allSettled(
stacks
.filter((s) => s.stack_name !== skipStack)
.map(async (s) => {
try {
await this.pushOverrideToNode(nodeId, s.stack_name);
} catch (err) {
console.warn('[MeshService] override push failed:', sanitizeForLog((err as Error).message));
}
}),
);
}
/**
* Walk every `mesh_stacks` row across the fleet and re-push each override.
* Called from optInStack / optOutStack so a new or removed alias
* propagates to every meshed node's override file in one pass, not just
* the node whose row changed. Best-effort: per-stack failures emit a
* forwarder.error activity event and the other nodes still get
* regenerated. An offline remote node leaves stale overrides until the
* next opt-in / opt-out, the next tunnel reconnect, or a manual
* `POST /api/mesh/regen-overrides`.
*/
private async regenerateOverridesAcrossFleet(
skipNodeId?: number,
skipStack?: string,
): Promise<void> {
const db = DatabaseService.getInstance();
const stacks = db.listMeshStacks();
await Promise.allSettled(
stacks
.filter((s) => !(s.node_id === skipNodeId && s.stack_name === skipStack))
.map(async (s) => {
try {
await this.pushOverrideToNode(s.node_id, s.stack_name);
} catch (err) {
const message = sanitizeForLog((err as Error).message);
this.logActivity({
source: 'mesh', level: 'warn', type: 'forwarder.error',
nodeId: s.node_id,
message: `cascade override push failed for ${s.stack_name}: ${message}`,
details: { stackName: s.stack_name },
});
}
}),
);
}
/**
* Walk every `mesh_stacks` row across the fleet and fire a redeploy for
* each, skipping the (skipNodeId, skipStack) tuple. Called from
* optInStack / optOutStack after `regenerateOverridesAcrossFleet` so
* previously-meshed containers actually pick up the new or removed
* alias entries in `/etc/hosts`. Without this, override `.yml` files on
* disk reflect the new alias set but the running containers still hold
* the alias set they had at last compose, so cross-stack DNS silently
* fails until an operator redeploys every prior stack by hand.
*
* Each `triggerRedeploy` call is fire-and-forget. Local stacks route
* through `ComposeService.deployStack`, remote stacks through
* `POST /api/stacks/:name/deploy` via the proxy chain. Failures land in
* the mesh activity ring buffer and the audit log, so one slow or
* offline peer cannot block other targets.
*
* This is intentionally not invoked from `regenerateAllOverrides`
* (boot and manual `/regen-overrides`). A Sencho restart must not
* force a fleet-wide recompose of every meshed stack; the override
* files alone are sufficient there.
*
* Pacing: the cascade fans out in parallel. For the v1 mesh-stack
* counts (single-digit to low teens per host) this is fine; Docker's
* daemon serializes the contention that matters. If real-world fleets
* routinely exceed ~20 meshed stacks on one host, swap the loop for a
* `p-limit(4)` semaphore keyed on `node_id` (no test rewiring needed).
*/
private cascadeRecomposeAcrossFleet(
skipNodeId: number | undefined,
skipStack: string | undefined,
actor: string,
): void {
const db = DatabaseService.getInstance();
const targets = db.listMeshStacks().filter(
(s) => !(s.node_id === skipNodeId && s.stack_name === skipStack),
);
if (targets.length === 0) return;
for (const t of targets) {
this.triggerRedeploy(t.node_id, t.stack_name, actor);
}
const nodeIds = new Set(targets.map((t) => t.node_id));
const skippedNote = skipNodeId !== undefined && skipStack !== undefined
? ` (skipped ${skipStack} on node ${skipNodeId})`
: '';
this.logActivity({
source: 'mesh', level: 'info', type: 'mesh.enable',
message: `mesh cascade recompose: ${targets.length} stack${targets.length === 1 ? '' : 's'} across ${nodeIds.size} node${nodeIds.size === 1 ? '' : 's'}${skippedNote}`,
details: {
cascadeRecomposes: targets.length,
nodeCount: nodeIds.size,
skipNodeId: skipNodeId ?? null,
skipStack: skipStack ?? null,
},
});
}
/**
* Walk every `mesh_stacks` row across the fleet and re-push each override
* to its owning node. Called once at boot so on-disk override files
* survive a Sencho restart even if they were lost (image rebuild, volume
* reset, manual cleanup). Also exposed as `POST /api/mesh/regen-overrides`
* so an operator can rerun it after fixing a remote node that was offline
* at boot. Best-effort: failures are logged per-stack and other nodes
* still get regenerated. An offline remote node leaves stale overrides
* until the next opt-in / opt-out on that node, or the next manual rerun.
*/
public async regenerateAllOverrides(): Promise<MeshRegenSummary> {
if (!this.senchoIp) {
const reason = this.networkSetupError ?? 'mesh data plane unavailable';
this.logActivity({
source: 'mesh', level: 'warn', type: 'mesh.disable',
message: `mesh override regen skipped: data plane unavailable (${sanitizeForLog(reason)})`,
});
return { regenerated: 0, failures: [], skipped: true, reason };
}
const db = DatabaseService.getInstance();
const stacks = db.listMeshStacks();
const failures: MeshRegenFailure[] = [];
await Promise.allSettled(
stacks.map(async (s) => {
try {
await this.pushOverrideToNode(s.node_id, s.stack_name);
} catch (err) {
const message = sanitizeForLog((err as Error).message);
failures.push({ nodeId: s.node_id, stackName: s.stack_name, message });
this.logActivity({
source: 'mesh', level: 'warn', type: 'forwarder.error',
nodeId: s.node_id,
message: `mesh override regen failed for ${s.stack_name}: ${message}`,
details: { stackName: s.stack_name },
});
}
}),
);
const succeeded = stacks.length - failures.length;
const failedNodeIds = Array.from(new Set(failures.map((f) => f.nodeId))).sort((a, b) => a - b);
this.logActivity({
source: 'mesh', level: failures.length === 0 ? 'info' : 'warn', type: 'mesh.enable',
message: `mesh override regen complete: ${succeeded} succeeded, ${failures.length} failed across ${failedNodeIds.length} node(s)`,
details: { succeeded, failed: failures.length, failedNodeIds },
});
return { regenerated: succeeded, failures, skipped: false };
}
// --- Alias aggregation ---
public async refreshAliasCache(): Promise<void> {
const t0 = Date.now();
const db = DatabaseService.getInstance();
const next = new Map<string, MeshGlobalAlias>();
const portMap = new Map<number, MeshGlobalAlias>();
const stacks = db.listMeshStacks();
// Inspect all stacks in parallel; each remote-node lookup involves an
// HTTP fetch with its own 5 s AbortSignal. Sequential awaiting would
// let one slow node stall the whole refresh, which is on a 60 s loop.
const inspections = await Promise.allSettled(
stacks.map(async (row) => {
const node = db.getNode(row.node_id);
if (!node) return null;
const services = await this.inspectStackServices(row.node_id, row.stack_name);
return { row, node, services };
}),
);
for (const result of inspections) {
if (result.status !== 'fulfilled' || !result.value) continue;
const { row, node, services } = result.value;
for (const svc of services) {
const host = `${svc.service}.${row.stack_name}.${node.name}.sencho`;
for (const port of svc.ports) {
const alias: MeshGlobalAlias = {
host,
nodeId: row.node_id,
nodeName: node.name,
stackName: row.stack_name,
serviceName: svc.service,
port,
};
next.set(host, alias);
if (!portMap.has(port)) portMap.set(port, alias);
}
}
}
// Merge pilot overlay. Invariant: on central, pilotAliasOverlay is
// always empty (DB is authoritative); on pilots, db.listMeshStacks()
// returns empty (C-3), so the two populations are mutually exclusive
// and the first-write-wins portMap policy is safe.
for (const overlayAliases of this.pilotAliasOverlay.values()) {
for (const alias of overlayAliases) {
next.set(alias.host, alias);
if (!portMap.has(alias.port)) portMap.set(alias.port, alias);
}
}
this.aliasCache = next;
this.aliasByPort = portMap;
this.logDiag('alias cache refreshed', {
stacks: stacks.length,
aliases: next.size,
ports: portMap.size,
ms: Date.now() - t0,
});
}
public async listAliases(): Promise<MeshGlobalAlias[]> {
return Array.from(this.aliasCache.values());
}
/**
* Read the local stack's compose file and return its declared service
* names. Used by the override-write paths so a deploy that has just
* torn containers down still emits a complete services map even
* though Dockerode briefly returns no containers. Independent of
* runtime container state, so the override stays correct across the
* deploy lifecycle.
*
* Returns [] when the compose file is missing, unreadable, or fails
* to parse. Combined with the defensive fallback in
* {@link ensureStackOverride} / {@link applyLocalOverride} a transient
* empty result does not clobber a known-good override.
*
* LIMITATION: stacks that pull services in via compose `extends:` or
* `include:` will not have those external services covered. The
* top-level YAML.parse is sufficient for the supported compose
* shapes; if extends/include usage emerges, swap to
* `docker compose config --services` (subprocess).
*/
public async getDeclaredStackServiceNames(stackName: string, nodeId?: number): Promise<string[]> {
if (!isValidStackName(stackName)) return [];
const targetNodeId = nodeId ?? NodeRegistry.getInstance().getDefaultNodeId();
try {
const fsSvc = FileSystemService.getInstance(targetNodeId);
const baseDir = fsSvc.getBaseDir();
// For a multi-file Git stack, read every materialized compose file and
// union their service names, so a service declared only in an override
// file is still attached to the mesh. Single-file stacks read the one
// resolved compose file, byte-identical to the prior behavior.
const spec = DatabaseService.getInstance().getGitSource(stackName)?.applied_deploy_spec;
const relFiles = spec && spec.files.length > 0
? spec.files
: [await fsSvc.getComposeFilename(stackName)];
const names = new Set<string>();
for (const relFile of relFiles) {
if (relFile === '' || !isValidRelativeStackPath(relFile)) continue;
for (const name of await this.readComposeServiceNames(baseDir, stackName, relFile)) {
names.add(name);
}
}
return Array.from(names);
} catch (err) {
console.warn(
'[MeshService] getDeclaredStackServiceNames failed:',
sanitizeForLog((err as Error).message),
);
return [];
}
}
/**
* Read one compose file under a stack directory and return its declared
* service names. The stack segment uses path.basename as defense-in-depth and
* the resolved path is re-checked against the base dir; the relative file is
* validated by the caller. Returns [] when the file is missing or unparseable.
*/
private async readComposeServiceNames(baseDir: string, stackName: string, relFile: string): Promise<string[]> {
const composePath = path.join(baseDir, path.basename(stackName), relFile);
if (!isPathWithinBase(composePath, baseDir)) return [];
try {
const content = await fs.readFile(composePath, 'utf8');
const parsed = YAML.parse(content) as { services?: Record<string, unknown> } | null;
const services = parsed?.services && typeof parsed.services === 'object' ? parsed.services : null;
if (!services) return [];
return Object.keys(services).filter((name) => /^[A-Za-z0-9_][A-Za-z0-9_.-]*$/.test(name));
} catch {
return [];
}
}
/**
* Parse an existing mesh override file and extract the service names
* it already lists. Used by the defensive fallback so a transient
* empty compose-file read does not clobber a known-good override.
* Takes (dir, stackName) rather than a pre-built filePath so the
* path-injection sanitizer pattern (path.basename + isPathWithinBase)
* lives next to the read sink and stays recognizable to CodeQL.
*/
private async readExistingOverrideServiceNames(dir: string, stackName: string): Promise<string[]> {
const file = path.resolve(dir, `${path.basename(stackName)}.override.yml`);
if (!isPathWithinBase(file, dir)) return [];
try {
const content = await fs.readFile(file, 'utf8');
const parsed = YAML.parse(content) as { services?: Record<string, unknown> } | null;
const services = parsed?.services && typeof parsed.services === 'object' ? parsed.services : null;
if (!services) return [];
return Object.keys(services);
} catch {
return [];
}
}
/**
* Inspect a stack and return its running services with the ports they
* listen on. For the LOCAL Docker daemon only; callers targeting a
* remote node must use {@link inspectStackServices}, which dispatches
* via the HTTP proxy to the remote's `/api/mesh/local-services/:stack`.
*/
public async inspectLocalStackServices(stackName: string): Promise<Array<{ service: string; ports: number[] }>> {
try {
const docker = DockerController.getInstance().getDocker();
const containers = await docker.listContainers({
all: true,
filters: { label: [`com.docker.compose.project=${stackName}`] },
});
const byService = new Map<string, Set<number>>();
for (const c of containers) {
const svc = c.Labels?.['com.docker.compose.service'];
if (!svc) continue;
const ports = byService.get(svc) || new Set<number>();
for (const p of c.Ports || []) {
if (p.PrivatePort) ports.add(p.PrivatePort);
}
byService.set(svc, ports);
}
return Array.from(byService.entries()).map(([service, ports]) => ({ service, ports: Array.from(ports) }));
} catch (err) {
console.warn('[MeshService] inspectLocalStackServices failed:', sanitizeForLog((err as Error).message));
return [];
}
}
/**
* Inspect a stack on a (possibly remote) node and return its running
* services with the ports they listen on. Local nodes hit Dockerode
* directly; remote nodes (proxy mode and pilot-agent) reach their own
* Sencho's `/api/mesh/local-services/:stackName` via the existing
* `NodeRegistry.getProxyTarget` resolution chain because Dockerode is not
* directly reachable for remote nodes by design.
*/
private async inspectStackServices(nodeId: number, stackName: string): Promise<Array<{ service: string; ports: number[] }>> {
const node = DatabaseService.getInstance().getNode(nodeId);
if (!node) return [];
if (node.type !== 'remote') return this.inspectLocalStackServices(stackName);
try {
const res = await this.proxyFetch(
nodeId,
'GET',
`/api/mesh/local-services/${encodeURIComponent(stackName)}`,
undefined,
5_000,
);
if (!res.ok) {
console.error(`[MeshService] inspectStackServices: HTTP ${res.status} from node ${nodeId} (${sanitizeForLog(node.name)})`);
return [];
}
const body = await res.json() as { services?: Array<{ service: string; ports: number[] }> };
return body.services ?? [];
} catch (err) {
// proxyFetch throws MeshError('no_target') when getProxyTarget
// returns null (pilot tunnel offline, proxy bridge unreachable)
// and MeshError('push_failed') on a non-OK HTTP response. Treat
// both as a soft "no services to report" so the Routing tab does
// not surface a stack trace for a node that is simply offline.
if (err instanceof MeshError && (err.code === 'no_target' || err.code === 'push_failed')) {
console.warn(`[MeshService] inspectStackServices: unreachable node ${nodeId} (${sanitizeForLog(node.name)}): ${err.code}`);
return [];
}
console.error('[MeshService] inspectStackServices remote unreachable:', sanitizeForLog((err as Error).message));
return [];
}
}
public async listLocalStacks(): Promise<string[]> {
const localNodeId = NodeRegistry.getInstance().getDefaultNodeId();
return FileSystemService.getInstance(localNodeId).getStacks();
}
/**
* Local nodes read the filesystem; remote nodes fetch their own
* Sencho's `/api/mesh/local-stacks` because the remote's compose
* directory is not visible from central (pilot's filesystem lives
* on a different host).
*/
public async listStacksOnNode(nodeId: number): Promise<string[]> {
const node = DatabaseService.getInstance().getNode(nodeId);
if (!node) return [];
if (node.type !== 'remote') return this.listLocalStacks();
try {
const res = await this.proxyFetch(nodeId, 'GET', '/api/mesh/local-stacks', undefined, 5_000);
if (!res.ok) {
console.error(`[MeshService] listStacksOnNode: HTTP ${res.status} from node ${nodeId} (${sanitizeForLog(node.name)})`);
return [];
}
const body = await res.json() as { stacks?: unknown };
if (!Array.isArray(body.stacks)) return [];
return body.stacks.filter((s): s is string => typeof s === 'string');
} catch (err) {
if (err instanceof MeshError && err.code === 'no_target') {
console.warn(`[MeshService] listStacksOnNode: no proxy target for node ${nodeId} (${sanitizeForLog(node.name)})`);
return [];
}
console.error('[MeshService] listStacksOnNode remote unreachable:', sanitizeForLog((err as Error).message));
return [];
}
}
/**
* Build a `fetch` against a remote Sencho's API with the bearer token
* and the proxy tier header in place. Centralizes the header shape so a
* future addition (license header, audit context) only needs to land in
* one place.
*
* `x-node-id` is deliberately NOT set: callers target the remote
* Sencho's own routes, which operate against the remote's local node
* id. The bearer token alone authenticates.
*/
private async proxyFetch(
nodeId: number,
method: 'GET' | 'PUT' | 'POST' | 'DELETE',
apiPath: string,
body: unknown,
timeoutMs: number,
extraHeaders?: Record<string, string>,
): Promise<Response> {
const target = NodeRegistry.getInstance().getProxyTarget(nodeId);
if (!target) throw new MeshError('no_target', `no proxy target for node ${nodeId}`);
const url = `${target.apiUrl.replace(/\/$/, '')}${apiPath}`;
const headers: Record<string, string> = { ...extraHeaders };
if (body !== undefined) headers['Content-Type'] = 'application/json';
if (target.apiToken) headers['Authorization'] = `Bearer ${target.apiToken}`;
const proxyHeaders = LicenseService.getInstance().getProxyHeaders();
headers[PROXY_TIER_HEADER] = proxyHeaders.tier;
return await fetch(url, {
method,
headers,
body: body === undefined ? undefined : JSON.stringify(body),
signal: AbortSignal.timeout(timeoutMs),
});
}
/**
* Place a mesh override for a stack on whichever node owns it:
* - local node: regenerates via `ensureStackOverride`, which uses
* central's own senchoIp (correct because central is the node
* deploying that stack).
* - remote node: sends the fleet-wide alias list to the remote's
* `PUT /api/mesh/local-override/:stackName`; the remote renders
* the YAML using its OWN local senchoIp and writes it under its
* own DATA_DIR. This is essential because each node has its own
* `sencho_mesh` network and may be configured with a different
* SENCHO_MESH_SUBNET, so alias hostnames must always resolve to
* the local Sencho IP on the deploying node.
*
* Throws on remote push failure so callers (opt-in / opt-out) can abort
* cleanly rather than silently leaving stale overrides.
*/
public async pushOverrideToNode(nodeId: number, stackName: string): Promise<void> {
const node = DatabaseService.getInstance().getNode(nodeId);
if (!node) throw new MeshError('denied', `unknown node ${nodeId}`);
if (node.type !== 'remote') {
await this.ensureStackOverride(nodeId, stackName);
return;
}
const portAliases: MeshGlobalAlias[] = Array.from(this.aliasCache.values());
const aliases: MeshAlias[] = portAliases.map((a) => ({ host: a.host }));
const res = await this.proxyFetch(
nodeId,
'PUT',
`/api/mesh/local-override/${encodeURIComponent(stackName)}`,
{ aliases, portAliases },
5_000,
);
if (res.status === 404) {
throw new MeshError(
'push_failed',
`node ${node.name} does not support mesh override push (upgrade required)`,
);
}
if (!res.ok) {
const message = `HTTP ${res.status} from node ${node.name}`;
if (res.status >= 400 && res.status < 500) {
throw new MeshError('push_failed', message);
}
throw new Error(message);
}
}
/**
* Fire-and-forget redeploy of a stack on whichever node owns it. Used
* by opt-in and opt-out so the new alias entries reach the user
* containers' /etc/hosts without an operator manually clicking deploy.
*
* For local stacks: invokes `ComposeService.deployStack` directly.
* For remote stacks: HTTP POSTs to `<apiUrl>/api/stacks/:name/deploy`
* via the same bearer-token pattern the rest of the proxy chain uses.
*
* Errors are logged to the mesh activity buffer rather than thrown so
* the opt-in or opt-out call site can return success quickly. The
* operator sees the redeploy progress through the existing deploy
* stream surfaces; if it fails, the activity log records why.
*/
public triggerRedeploy(nodeId: number, stackName: string, actor: string): void {
void this.runRedeploy(nodeId, stackName, actor).catch((err) => {
const reason = sanitizeForLog((err as Error).message);
this.logActivity({
source: 'mesh', level: 'error', type: 'forwarder.error',
nodeId,
message: `mesh redeploy failed for ${stackName}: ${reason}`,
details: { actor, stackName },
});
// Also drop a durable audit row so an operator who walks away
// from the toast still has a trail. The activity ring buffer
// alone gets pruned at 1000 events.
DatabaseService.getInstance().insertAuditLog({
timestamp: Date.now(), username: actor, method: 'POST',
path: `/api/mesh/nodes/${nodeId}/stacks/${stackName}/redeploy`,
status_code: 500, node_id: nodeId, ip_address: '127.0.0.1',
summary: `Sencho Mesh: redeploy failed for ${stackName}: ${reason}`,
});
});
}
private async runRedeploy(nodeId: number, stackName: string, actor: string): Promise<void> {
const node = DatabaseService.getInstance().getNode(nodeId);
if (!node) throw new Error(`unknown node ${nodeId}`);
if (node.type !== 'remote') {
await assertPolicyGateAllows(
stackName,
nodeId,
buildSystemPolicyGateOptions(actor, {
auditPath: `/api/mesh/nodes/${nodeId}/stacks/${stackName}/redeploy`,
}),
);
const lock = await StackOpLockService.getInstance().runExclusive(
nodeId, stackName, 'deploy', 'system',
() => ComposeService.getInstance(nodeId).deployStack(
stackName,
undefined,
undefined,
{ source: 'mesh_redeploy', actor: 'system:mesh' },
),
);
if (!lock.ran) {
throw new Error(`Cannot redeploy "${stackName}": another operation (${lock.existing.action}) is already in progress.`);
}
this.logActivity({
source: 'mesh', level: 'info', type: 'mesh.enable',
nodeId,
message: `mesh redeploy ok for ${stackName}`,
details: { actor, stackName },
});
return;
}
// Mesh redeploys are bounded by docker compose's own runtime; pick a
// generous ceiling rather than the 5 s default used for control-plane
// calls so a slow image pull does not abort the redeploy.
const res = await this.proxyFetch(
nodeId,
'POST',
`/api/stacks/${encodeURIComponent(stackName)}/deploy`,
{},
10 * 60 * 1000,
deployProvenanceHeaders('mesh_redeploy', 'system:mesh'),
);
if (!res.ok) {
const body = await res.text().catch(() => '');
throw new Error(`HTTP ${res.status} from node ${node.name}: ${body.slice(0, 256)}`);
}
this.logActivity({
source: 'mesh', level: 'info', type: 'mesh.enable',
nodeId,
message: `mesh redeploy ok for ${stackName}`,
details: { actor, stackName },
});
}
public async removeOverrideFromNode(nodeId: number, stackName: string): Promise<void> {
const node = DatabaseService.getInstance().getNode(nodeId);
if (!node) return;
if (node.type !== 'remote') {
await this.removeStackOverride(nodeId, stackName);
return;
}
try {
const response = await this.proxyFetch(
nodeId,
'DELETE',
`/api/mesh/local-override/${encodeURIComponent(stackName)}`,
undefined,
5_000,
);
if (!response.ok) {
const body = await response.text().catch(() => '');
throw new Error(`HTTP ${response.status} from node ${node.name}: ${body.slice(0, 256)}`);
}
} catch (err) {
console.warn('[MeshService] removeOverrideFromNode failed:', sanitizeForLog((err as Error).message));
throw err;
}
}
// --- Resolution + forwarding ---
public resolveByLocalPort(port: number): MeshTarget | null {
const alias = this.aliasByPort.get(port);
if (!alias) return null;
return {
nodeId: alias.nodeId,
stack: alias.stackName,
service: alias.serviceName,
port: alias.port,
alias: alias.host,
};
}
/**
* MeshForwarder calls this on every accepted inbound socket. Resolves
* the alias by destination port, then dispatches to the same-node fast
* path or the cross-node bridge path.
*/
public async handleAccept(port: number, src: net.Socket): Promise<void> {
const target = this.resolveByLocalPort(port);
if (!target) {
this.logActivity({
source: 'mesh', level: 'warn', type: 'route.resolve.denied',
message: `inbound on port ${port} has no registered alias`,
details: { port, remoteAddr: src.remoteAddress ?? '' },
});
try { src.destroy(); } catch { /* ignore */ }
return;
}
// Resolution order: active proxy-tunnel install > boot-time enroll
// token > local DB default. The proxy-tunnel value is the most
// authoritative when present because the upstream central just told
// this peer how it sees it; the enroll token covers pilot mode; the
// default-node fallback covers central itself.
const selfNodeId =
this.proxyTunnelSelfCentralNodeId
?? this.selfCentralNodeId
?? NodeRegistry.getInstance().getDefaultNodeId();
let selfSource: string;
if (this.proxyTunnelSelfCentralNodeId != null) selfSource = 'proxy-tunnel';
else if (this.selfCentralNodeId != null) selfSource = 'enroll-token';
else selfSource = 'default-node';
this.logDiag('forwarder dispatch', {
port,
alias: target.alias,
targetNodeId: target.nodeId,
selfNodeId,
selfSource,
path: target.nodeId === selfNodeId ? 'same-node' : 'cross-node',
});
if (target.nodeId === selfNodeId) {
await this.openSameNode(target, src);
} else {
await this.openCrossNode(target, src);
}
}
/**
* Same-node forward: dial the target container's bridge IP directly.
* Sencho joins the `sencho_mesh` Docker bridge network alongside the
* meshed user containers, so it can reach their bridge IPs without
* going through any host-port publish. Looks up the container by
* Compose's `<project>-<service>-<index>` naming convention; falls
* back to a label-filtered listContainers if the conventional name
* is absent (e.g. when the operator overrode the project name).
*/
private async openSameNode(target: MeshTarget, src: net.Socket): Promise<void> {
const ip = await this.resolveContainerIp(target);
if (!ip) {
this.logActivity({
source: 'mesh', level: 'error', type: 'route.resolve.denied',
alias: target.alias,
message: `cannot resolve container IP for ${target.alias}`,
});
try { src.destroy(); } catch { /* ignore */ }
return;
}
const upstream = net.createConnection({ host: ip, port: target.port });
upstream.setTimeout(PROBE_TIMEOUT_MS);
const stream = this.registerActiveStream(target.alias);
upstream.once('connect', () => {
upstream.setTimeout(0);
this.logActivity({
source: 'mesh', level: 'info', type: 'route.resolve.ok',
alias: target.alias, streamId: stream.streamId,
message: `same-node connect to ${target.alias} (${ip}:${target.port})`,
});
src.pipe(upstream);
upstream.pipe(src);
});
const teardown = () => {
this.activeStreams.delete(stream.streamId);
try { upstream.destroy(); } catch { /* ignore */ }
try { src.destroy(); } catch { /* ignore */ }
};
upstream.on('error', () => teardown());
upstream.on('close', () => teardown());
src.on('error', () => teardown());
src.on('close', () => teardown());
}
/**
* Find the bridge-network IP of the first container of
* `<stack>/<service>`. Public so the central-side
* `PilotTunnelBridge` reverse-open handler (Phase B) can dial the same
* target shape when a pilot's mesh forwarder routes traffic back to
* central.
*/
public async resolveContainerIp(target: { stack: string; service: string }): Promise<string | null> {
const docker = DockerController.getInstance().getDocker() as unknown as Parameters<typeof lookupContainerIp>[0];
try {
return await lookupContainerIp(docker, target.stack, target.service);
} catch (err) {
console.warn('[MeshService] container IP lookup failed:', sanitizeForLog((err as Error).message));
return null;
}
}
/**
* Pluggable reverse dialer. Set by `PilotAgent` on a pilot host or by
* the proxy-mode WS handler when a `/api/mesh/proxy-tunnel` upgrade
* comes in; left null on a central host with no inbound mesh tunnel.
* When set, `openCrossNode` routes outbound mesh dials through the
* dialer's `tcp_open_reverse` path; when unset, `openCrossNode` uses
* the central-side `PilotTunnelManager.getBridge` directly. Lets the
* same MeshService code work on both sides.
*/
private reverseDialer: ReverseMeshDialer | null = null;
/**
* Install or clear the reverse dialer. Supports compare-and-swap via
* the optional `expected` argument so a caller (e.g., the proxy-mode
* WS handler) can install on a null slot and uninstall only if its
* own dialer is still the active one. Without the `expected` arg the
* operation is unconditional (used by the pilot agent at boot).
*
* Returns true when the swap happened, false when the CAS rejected
* because `expected` did not match the current dialer.
*/
public setReverseDialer(dialer: ReverseMeshDialer | null, expected?: ReverseMeshDialer | null): boolean {
if (expected !== undefined && this.reverseDialer !== expected) return false;
// Loud warn instead of silent overwrite: pilot and proxy modes are
// mutually exclusive by topology, so this branch indicates a
// misconfigured deployment rather than an expected race.
if (expected === undefined && dialer !== null && this.reverseDialer !== null && this.reverseDialer !== dialer) {
console.warn('[MeshService] reverse dialer overwritten without CAS; pilot/proxy mode race or duplicate install');
}
this.reverseDialer = dialer;
return true;
}
/**
* Install (or clear) the central-namespace nodeId communicated by the
* upstream central at proxy-tunnel upgrade. Called by the proxy-tunnel
* WS handler; cleared on disconnect. Consumed by `handleAccept` to
* dispatch cross-node aliases correctly on proxy peers.
*
* The caller is implicitly single-tenant: it runs only after
* `setReverseDialer`'s CAS install succeeds (slot already guarded). A
* second non-null install while a different non-null value is present
* indicates a misconfigured deployment, so we warn loudly instead of
* silently overwriting.
*/
public setProxyTunnelSelfCentralNodeId(nodeId: number | null): void {
if (
nodeId !== null
&& this.proxyTunnelSelfCentralNodeId !== null
&& this.proxyTunnelSelfCentralNodeId !== nodeId
) {
console.warn(
`[MeshService] proxyTunnelSelfCentralNodeId overwritten ${this.proxyTunnelSelfCentralNodeId} -> ${nodeId}; concurrent proxy-tunnel install or misconfigured deployment`,
);
}
if (nodeId !== null && this.proxyTunnelSelfCentralNodeId !== nodeId) {
this.logActivity({
source: 'mesh', level: 'info', type: 'mesh.proxy_tunnel.identify',
message: `proxy-tunnel: this node is nodeId=${nodeId} in central's namespace`,
});
}
// Null-clear (tunnel teardown) is intentionally not logged: it
// would double the entries on every reconnect cycle without adding
// signal beyond the existing `proxy-tunnel.close` event.
this.proxyTunnelSelfCentralNodeId = nodeId;
}
private async dialMeshTcpStream(target: MeshTarget): Promise<MeshTcpStreamLike | null> {
if (this.reverseDialer) {
return this.reverseDialer.openMeshTcpStream({
nodeId: target.nodeId,
stack: target.stack,
service: target.service,
port: target.port,
});
}
const ptm = PilotTunnelManager.getInstance();
// ensureBridge resolves an existing pilot tunnel, an existing
// proxy-mode tunnel, or dials a fresh proxy-mode tunnel on demand.
// Returns null for unreachable nodes (no api_url/api_token, scope
// insufficient, remote pre-Phase-C, network error).
const bridge = await ptm.ensureBridge(target.nodeId);
if (!bridge) return null;
return bridge.openTcpStream({ stack: target.stack, service: target.service, port: target.port });
}
private async openCrossNode(target: MeshTarget, src: net.Socket): Promise<void> {
// Log every dispatch entry. Same-node logs route.resolve.ok on
// its TCP `connect` event; cross-node only logs route.resolve.ok
// once tcp_open_ack arrives from the agent. Without this entry
// log, a stuck cross-node dial leaves zero events in the activity
// buffer even though the prober's TCP handshake completed.
this.logActivity({
source: 'mesh', level: 'info', type: 'route.dispatch',
nodeId: target.nodeId, alias: target.alias,
message: `cross-node dispatch to ${target.alias} on node ${target.nodeId}`,
});
const tcpStream = await this.dialMeshTcpStream(target);
if (!tcpStream) {
// Three failure shapes on this path:
// - central with reverseDialer somehow installed (unusual; relay edge case)
// - central without reverseDialer (normal): ensureBridge could not reach the target peer
// - peer side: target nodeId is central's id, which the peer's NodeRegistry does
// not know as a remote proxy target, so ensureBridge returns null. The actionable
// condition is "central has not dialed the bridge yet"; tell the operator.
const targetIsLocalKnownRemote = NodeRegistry.getInstance().getNode(target.nodeId)?.type === 'remote';
const message = this.reverseDialer
? `cannot open reverse mesh stream to node ${target.nodeId}`
: targetIsLocalKnownRemote
? `no mesh tunnel reachable for node ${target.nodeId}`
: `peer cross-node dispatch deferred: waiting for central to dial the reverse bridge`;
this.logActivity({
source: 'pilot', level: 'error', type: 'tunnel.fail',
nodeId: target.nodeId, alias: target.alias, message,
});
try { src.destroy(); } catch { /* ignore */ }
return;
}
const record = this.registerActiveStream(target.alias, tcpStream.streamId);
const t0 = Date.now();
// Hold src bytes until tcp_open_ack arrives. Writing through to the
// tunnel before 'open' fires races the first packet ahead of the
// ack, which breaks protocols that send immediately after connect
// (HTTP, TLS, Redis, Postgres). Cap matches the bridge's reservation
// cap so a misbehaving source cannot exhaust gateway memory.
let tcpOpen = false;
const pending: Buffer[] = [];
let pendingBytes = 0;
// Timer guards against the agent never returning a tcp_open_ack
// (broken pilot, frame dropped, dial stuck after handshake).
// Without this the stream sits forever and the operator sees
// nothing in the activity log between dispatch and close.
let openTimer: NodeJS.Timeout | null = setTimeout(() => {
openTimer = null;
this.logActivity({
source: 'pilot', level: 'warn', type: 'tunnel.fail',
nodeId: target.nodeId, alias: target.alias, streamId: record.streamId,
message: `cross-node dial to ${target.alias} timed out waiting for tcp_open_ack`,
});
try { tcpStream.destroy(); } catch { /* ignore */ }
try { src.destroy(); } catch { /* ignore */ }
}, PROBE_TIMEOUT_MS);
const clearOpenTimer = () => {
if (openTimer) { clearTimeout(openTimer); openTimer = null; }
};
// Idempotent stream cleanup. F-10: src.on('close'/'error') used to
// only destroy tcpStream and never delete the activeStreams entry,
// so failed dials whose remote tcp_close ack was lost (or whose peer
// was already gone) leaked records until the whole tunnel idle-
// closed. Map.delete is naturally idempotent, so it's safe for both
// the src side and the tcpStream side to call this.
const cleanupRecord = () => {
clearOpenTimer();
this.activeStreams.delete(record.streamId);
};
tcpStream.on('open', () => {
clearOpenTimer();
this.logActivity({
source: 'mesh', level: 'info', type: 'route.resolve.ok',
nodeId: target.nodeId, alias: target.alias, streamId: record.streamId,
message: `cross-node connect to ${target.alias}`,
});
this.routeLatencyMap.set(target.alias, Date.now() - t0);
// Flush any bytes that arrived before tcp_open_ack so the upstream
// sees them in order, ahead of anything that lands post-ack.
for (const buf of pending) {
try { tcpStream.write(buf); } catch { /* ignore */ }
}
pending.length = 0;
pendingBytes = 0;
tcpOpen = true;
});
tcpStream.on('data', (chunk: Buffer) => {
record.bytesIn += chunk.length;
try { src.write(chunk); } catch { /* ignore */ }
});
tcpStream.on('error', (err: Error) => {
cleanupRecord();
this.logActivity({
source: 'pilot', level: 'error', type: 'tunnel.fail',
nodeId: target.nodeId, alias: target.alias, streamId: record.streamId,
message: sanitizeForLog(err.message),
});
try { src.destroy(); } catch { /* ignore */ }
});
tcpStream.on('close', () => {
cleanupRecord();
try { src.end(); } catch { /* ignore */ }
});
src.on('data', (chunk: Buffer) => {
record.bytesOut += chunk.length;
if (tcpOpen) {
tcpStream.write(chunk);
return;
}
if (pendingBytes + chunk.length > STREAM_PENDING_DATA_MAX_BYTES) {
try { src.destroy(); } catch { /* ignore */ }
try { tcpStream.destroy(); } catch { /* ignore */ }
return;
}
pending.push(Buffer.from(chunk));
pendingBytes += chunk.length;
});
src.on('end', () => tcpStream.end());
src.on('close', () => { cleanupRecord(); try { tcpStream.destroy(); } catch { /* ignore */ } });
src.on('error', () => { cleanupRecord(); try { tcpStream.destroy(); } catch { /* ignore */ } });
}
private registerActiveStream(alias: string, streamId?: number): ActiveStreamRecord {
const id = streamId ?? -Math.floor(Math.random() * 0x7fffffff);
const record: ActiveStreamRecord = {
streamId: id, alias, bytesIn: 0, bytesOut: 0, openedAt: Date.now(),
};
this.activeStreams.set(id, record);
return record;
}
private onTunnelDown(nodeId: number): void {
this.logActivity({
source: 'pilot', level: 'warn', type: 'tunnel.fail',
nodeId, message: `pilot tunnel down for node ${nodeId}`,
});
}
// --- Probe / Test upstream ---
public async testUpstream(alias: string, sourceNodeId: number): Promise<MeshProbeResult> {
const target = this.lookupAliasGlobal(alias);
if (!target) {
return { ok: false, where: 'no_route', code: 'no_route', message: 'alias not found' };
}
if (!DatabaseService.getInstance().isMeshStackEnabled(target.nodeId, target.stackName)) {
return { ok: false, where: 'agent_resolve', code: 'denied', message: 'target stack not opted in' };
}
if (target.nodeId !== sourceNodeId) {
// Use ensureBridge so proxy-mode remotes get a bridge dialed
// on demand. Pre-fix this called hasActiveTunnel + getBridge,
// which only checked the pilot-tunnel slot and returned
// tunnel_down for proxy-mode targets even when the regular
// dialMeshTcpStream path worked.
const ptm = PilotTunnelManager.getInstance();
const bridge = await ptm.ensureBridge(target.nodeId);
if (!bridge) {
return { ok: false, where: 'pilot_tunnel', code: 'tunnel_down', message: 'no bridge' };
}
const t0 = Date.now();
const stream = bridge.openTcpStream({ stack: target.stackName, service: target.serviceName, port: target.port });
if (!stream) return { ok: false, where: 'pilot_tunnel', code: 'tunnel_down', message: 'open failed' };
return new Promise<MeshProbeResult>((resolve) => {
const timer = setTimeout(() => {
stream.destroy();
this.routeProbeAtMap.set(target.host, Date.now());
resolve({ ok: false, where: 'agent_dial', code: 'timeout', message: 'probe timeout' });
}, PROBE_TIMEOUT_MS);
stream.once('open', () => {
clearTimeout(timer);
const latency = Date.now() - t0;
this.routeLatencyMap.set(target.host, latency);
this.routeProbeAtMap.set(target.host, Date.now());
stream.destroy();
this.logActivity({
source: 'mesh', level: 'info', type: 'probe.ok',
alias: target.host, message: `probe ok ${latency}ms`,
});
resolve({ ok: true, latencyMs: latency });
});
stream.once('error', (err: Error) => {
clearTimeout(timer);
this.routeProbeAtMap.set(target.host, Date.now());
const sanitized = sanitizeForLog(err.message);
this.logActivity({
source: 'mesh', level: 'error', type: 'probe.fail',
alias: target.host, message: sanitized,
});
resolve({ ok: false, where: 'agent_dial', code: 'unreachable', message: sanitized });
});
});
}
const t0 = Date.now();
return new Promise<MeshProbeResult>((resolve) => {
const sock = net.createConnection({ host: '127.0.0.1', port: target.port });
sock.setTimeout(PROBE_TIMEOUT_MS);
sock.once('connect', () => {
const latency = Date.now() - t0;
this.routeLatencyMap.set(target.host, latency);
this.routeProbeAtMap.set(target.host, Date.now());
sock.destroy();
resolve({ ok: true, latencyMs: latency });
});
sock.once('timeout', () => {
sock.destroy();
this.routeProbeAtMap.set(target.host, Date.now());
this.logActivity({
source: 'mesh', level: 'error', type: 'probe.fail',
alias: target.host, message: 'connect timeout',
});
resolve({ ok: false, where: 'target_port', code: 'timeout', message: 'connect timeout' });
});
sock.once('error', (err) => {
this.routeProbeAtMap.set(target.host, Date.now());
const sanitized = sanitizeForLog(err.message);
this.logActivity({
source: 'mesh', level: 'error', type: 'probe.fail',
alias: target.host, message: sanitized,
});
resolve({ ok: false, where: 'target_port', code: 'unreachable', message: sanitized });
});
});
}
private lookupAliasGlobal(host: string): MeshGlobalAlias | null {
return this.aliasCache.get(host) || null;
}
// --- Diagnostics ---
/**
* Whether mesh CAN route to a node based on current configuration.
* Distinct from "live tunnel up right now": for proxy-mode remotes
* the tunnel is opened on demand, so a caller that demanded a
* current tunnel would misreport every idle proxy-mode route as
* `tunnel down`. Live pilot-tunnel state is surfaced separately.
*/
private isNodeMeshConfigured(node: ReturnType<typeof DatabaseService.prototype.getNode>): boolean {
if (!node) return false;
if (node.type !== 'remote') return true;
if (node.mode === 'pilot_agent') return true;
if (node.mode === 'proxy') return !!node.api_url && !!node.api_token;
return false;
}
/**
* Compute the reachability classification surfaced in `MeshNodeStatus`
* and consumed by the Routing tab. See `MeshReachableMode` for the
* meaning of each value. Callers pass in the already-fetched node row
* (and the local nodeId) so this helper is free of DB I/O when
* `getStatus` iterates the fleet.
*/
private computeReachable(node: ReturnType<typeof DatabaseService.prototype.getNode>, localNodeId: number): { mode: MeshReachableMode; reason: string | null } {
if (!node) return { mode: 'unreachable', reason: 'unknown node' };
if (node.id === localNodeId || node.type !== 'remote') return { mode: 'local', reason: null };
if (node.mode === 'pilot_agent') return { mode: 'pilot', reason: null };
if (node.mode === 'proxy') {
if (!node.api_url) return { mode: 'unreachable', reason: 'api_url not set' };
if (!node.api_token) return { mode: 'unreachable', reason: 'api token missing' };
// Recent-failure cache surfaces the last failed dial so the
// operator sees a clear reason without triggering a redial
// storm.
const failure = MeshProxyTunnelDialer.getInstance().getRecentFailure(node.id);
if (failure) {
const reason = REACHABLE_REASON[failure.code] ?? failure.message ?? 'remote unreachable';
return { mode: 'unreachable', reason };
}
return { mode: 'proxy', reason: null };
}
return { mode: 'unreachable', reason: 'unknown node mode' };
}
public async getRouteDiagnostic(alias: string): Promise<MeshRouteDiagnostic> {
const target = this.lookupAliasGlobal(alias);
if (!target) {
const lastError = this.routeErrorMap.get(alias) || null;
const lastProbeMs = this.routeLatencyMap.get(alias) ?? null;
const lastProbeAt = this.routeProbeAtMap.get(alias) ?? null;
return { alias, target: null, pilot: { connected: false, lastSeen: null }, lastError, lastProbeMs, lastProbeAt, state: 'not authorized' };
}
const node = DatabaseService.getInstance().getNode(target.nodeId);
const routable = this.isNodeMeshConfigured(node);
// Pilot-mode routes surface live tunnel state; proxy-mode routes
// fall back to `routable` because the tunnel is opened on demand
// and a quiescent state is normal.
const pilotLive = node?.type === 'remote' && node.mode === 'pilot_agent'
? PilotTunnelManager.getInstance().hasActiveTunnel(target.nodeId)
: routable;
const lastSeen = node?.pilot_last_seen ?? null;
const optedIn = DatabaseService.getInstance().isMeshStackEnabled(target.nodeId, target.stackName);
// F-11: cached state was stale until someone manually hit POST .../test.
// Probe synchronously here so the GET reflects current upstream state.
// Skip when the probe would be wasted (no target, opt-out, tunnel down) —
// those short-circuits keep a downed peer from holding the GET for
// PROBE_TIMEOUT_MS. Probe failures are swallowed because we only use the
// call for its side effects on routeLatencyMap / routeErrorMap /
// routeProbeAtMap; the activity log already records probe.fail.
if (optedIn && routable && pilotLive) {
try {
await this.testUpstream(alias, NodeRegistry.getInstance().getDefaultNodeId());
} catch {
// ignore — diagnostic must not error out on probe failure
}
}
const lastError = this.routeErrorMap.get(alias) || null;
const lastProbeMs = this.routeLatencyMap.get(alias) ?? null;
const lastProbeAt = this.routeProbeAtMap.get(alias) ?? null;
let state: MeshRouteDiagnostic['state'];
if (!optedIn) state = 'not authorized';
else if (!routable || !pilotLive) state = 'tunnel down';
else if (lastError && Date.now() - lastError.ts < 60_000) state = 'unreachable';
else if (lastProbeMs !== null && lastProbeMs > SLOW_PROBE_THRESHOLD_MS) state = 'degraded';
else state = 'healthy';
return {
alias,
target: {
nodeId: target.nodeId,
stack: target.stackName,
service: target.serviceName,
port: target.port,
alias,
},
pilot: { connected: pilotLive, lastSeen },
lastError,
lastProbeMs,
lastProbeAt,
state,
};
}
public async getNodeDiagnostic(nodeId: number): Promise<MeshNodeDiagnostic> {
const ptm = PilotTunnelManager.getInstance();
const bridge = ptm.getBridge(nodeId);
const node = DatabaseService.getInstance().getNode(nodeId);
const localNodeId = NodeRegistry.getInstance().getDefaultNodeId();
const isLocal = nodeId === localNodeId;
const aliasCacheRows = Array.from(this.aliasCache.values())
.filter((a) => a.nodeId === nodeId)
.map((a) => ({ host: a.host, targetNodeId: a.nodeId, port: a.port }));
const now = Date.now();
const activeStreams = Array.from(this.activeStreams.values()).map((s) => ({
streamId: s.streamId, alias: s.alias,
bytesIn: s.bytesIn, bytesOut: s.bytesOut,
ageMs: now - s.openedAt,
}));
const listenerCount = isLocal ? this.forwarder.getListenerPorts().length : 0;
return {
nodeId,
forwarder: {
listening: isLocal && this.isLocalForwarderActive(),
listenerCount,
},
pilot: {
connected: !!bridge,
bufferedAmount: bridge?.getBufferedAmount() ?? 0,
lastSeen: node?.pilot_last_seen ?? null,
},
activeStreams,
aliasCache: aliasCacheRows,
};
}
public async getStatus(): Promise<MeshNodeStatus[]> {
const db = DatabaseService.getInstance();
const nodes = db.getNodes();
const localNodeId = NodeRegistry.getInstance().getDefaultNodeId();
const localListening = this.isLocalForwarderActive();
const ptm = PilotTunnelManager.getInstance();
const dialer = MeshProxyTunnelDialer.getInstance();
// Precompute the (nodeId, stackName) pairs that currently have at least
// one alias in the cache. Reading the cache (refreshed every 60 s and
// on opt-in/opt-out) keeps the new `currentlyResolvable` field aligned
// with what `/api/mesh/aliases` reports, without paying the cost of a
// fresh Dockerode/cross-node inspect per status poll.
const resolvableKeys = new Set<string>();
for (const alias of this.aliasCache.values()) {
resolvableKeys.add(`${alias.nodeId}:${alias.stackName}`);
}
return nodes.map((node) => {
const reach = this.computeReachable(node, localNodeId);
const meshEnabled = db.getNodeMeshEnabled(node.id);
return {
nodeId: node.id,
nodeName: node.name,
enabled: meshEnabled,
localForwarderListening: node.id === localNodeId ? localListening : null,
// `pilotConnected` stays at its original meaning: a pilot
// tunnel is currently registered for this node. The
// Routing tab now derives badge state from `reachableMode`
// and reads `pilotConnected` only for the pilot-offline
// sub-state.
pilotConnected: node.type !== 'remote' || ptm.hasActiveTunnel(node.id),
reachableMode: reach.mode,
reachableReason: reach.reason,
reverseCallbackStatus: this.computeReverseCallbackStatus(node, meshEnabled, dialer),
optedInStacks: db.listMeshStacks(node.id).map((s) => ({
stackName: s.stack_name,
currentlyResolvable: resolvableKeys.has(`${node.id}:${s.stack_name}`),
})),
activeStreamCount: this.activeStreams.size,
};
});
}
private computeReverseCallbackStatus(
node: { id: number; type: 'local' | 'remote'; mode: NodeMode },
meshEnabled: boolean,
dialer: MeshProxyTunnelDialer,
): MeshReverseCallbackStatus {
if (node.type !== 'remote' || node.mode !== 'proxy' || !meshEnabled) {
return 'not_applicable';
}
if (dialer.hasBridge(node.id)) return 'connected';
if (dialer.isDialing(node.id)) return 'connecting';
return 'unavailable';
}
/** True when the local Sencho's forwarder is started and bound to at least one alias port. */
private isLocalForwarderActive(): boolean {
return this.started && this.forwarder.getListenerPorts().length > 0;
}
}
export type MeshErrorCode =
| 'no_target'
| 'port_collision'
| 'denied'
| 'agent_error'
| 'push_failed';
export class MeshError extends Error {
public readonly code: MeshErrorCode;
constructor(code: MeshErrorCode, message: string) {
super(message);
this.code = code;
}
}
/**
* Common surface of an outbound mesh TCP stream as MeshService consumes
* it. Both the central-side `PilotTunnelBridge.TcpStream` and the
* pilot-side `ReverseTcpStreamHandle` (from `mesh/tcpStreamSwitchboard.ts`) implement
* this shape structurally so MeshService.openCrossNode can splice bytes
* against either without caring which side initiated the stream.
*/
export interface MeshTcpStreamLike {
readonly streamId: number;
write(chunk: Buffer): boolean;
end(): void;
destroy(): void;
on(event: 'open', listener: () => void): this;
on(event: 'data', listener: (chunk: Buffer) => void): this;
on(event: 'error', listener: (err: Error) => void): this;
on(event: 'close', listener: () => void): this;
}
/**
* Pilot-side reverse dialer. Set by `PilotAgent` when the agent boots
* (Phase B); leaves MeshService.openCrossNode able to route outbound
* cross-node mesh traffic over the agent's outbound `tcp_open_reverse`
* frame instead of central's `PilotTunnelManager.getBridge`.
*/
export interface ReverseMeshDialer {
openMeshTcpStream(target: { nodeId: number; stack: string; service: string; port: number }): MeshTcpStreamLike | null;
}