Anso 9f2f13f35a feat(stack-files): in-process metrics and structured mutation logs (#1216)
* feat(stack-files): in-process metrics and structured mutation logs

Adds FileExplorerMetricsService, an in-memory counter and latency
histogram keyed by (nodeId, op) modelled on StackOpMetricsService.
record() is called once per file-route request from a small
recordFileOp helper that wraps the metric capture; rejection paths
that ran real filesystem work (overwrite confirms, write conflicts,
multer oversize) now record an error count and a warn log instead of
disappearing from the snapshot. recordUploadBytes tracks bytes that
actually persisted so a node taking many small uploads vs a few large
ones is visible in the dashboard.

Admin-only GET /api/file-explorer-metrics returns the snapshot in the
same shape as /api/stack-metrics so an operator chasing a slow node
has a single place to look. No external telemetry; everything is
process-local and resets on restart.

Mutation INFO lines now carry op, stack, path, and bytes/mode/
recursive/overwrite/toPath in the structured details so log scrapers
can pivot on the same identity the metric uses. The existing
developer_mode gate on logFileDiag is unchanged. A new
rejectFileMutation helper centralises the log+metric+response triple
on the three rejection sites (upload DIR_EXISTS, upload FILE_EXISTS,
write PRECONDITION_FAILED) so a future rejection cannot skip the
metric.

Tests cover the service in isolation (counts, p50/p95, ring buffer cap,
upload bytes tracking, snapshot sorting), the admin route auth and
shape, and the route layer end-to-end: a real upload surfaces in
/api/file-explorer-metrics, a FILE_EXISTS rejection bumps errorCount,
and the structured INFO line carries the expected fields.

* fix(stack-files): tighten download/upload latency tracking

Two metric-accuracy bugs caught in independent review:

Download metric was recorded as a success before result.stream.pipe(res)
ran. A mid-stream read failure or a client disconnect was not counted as
an error because the recorder fired at pipe time, not stream completion.
Now the recorder hangs off res.on('finish') for success and on both the
stream's error event and res.on('close') for failure, with a flag so a
normal completion (which emits both finish and close) does not produce
two recordings.

Upload latency was inconsistent across the success and failure branches.
The multer wrapper captured startedAt at route entry, but the async
handler created its own startedAt after multer had already buffered the
body. Successful uploads therefore reported only the post-multer time
and the multipart transfer/buffer cost vanished from the histogram. The
wrapper now stashes the route-entry timestamp on the request object and
the async handler reads it back, so every metric for a given upload
shares one window.

A new test pins the download recorder behaviour: a single successful
download must produce successCount=1, count=1, errorCount=0 in the
snapshot, which would have flagged the original double-fire path the
finish+close pair could have introduced.
2026-05-25 01:46:08 -04:00
2026-03-25 00:40:06 -04:00

Sencho

Self-hosted Docker Compose management for one machine or a fleet.

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Sencho dashboard

What Sencho is

Sencho is for homelab operators, small DevOps teams, and platform engineers who run services on Docker Compose, want a graphical interface without giving up file-on-disk workflows, and need to manage more than one machine without SSH gymnastics or a VPN.

It runs as a single container on your hardware and gives you a UI for the work you currently do over SSH on compose stacks: deploying, editing files, watching logs, restarting containers, browsing volumes, and recovering from failures. Your compose files stay on the host filesystem and remain the source of truth.

A Sencho instance is autonomous. To manage another machine, you install a second Sencho on it and connect them with a long-lived API token; the primary dashboard then acts as a transparent HTTPS proxy across your fleet. There is no SSH and no exposed Docker socket. For nodes behind NAT or strict firewalls, the Pilot Agent establishes a single outbound WebSocket tunnel to the primary, so the remote host opens no inbound port at all.

Most capabilities are free in the Community tier. A few advanced automation and fleet-control features ship in paid tiers; pricing lives at sencho.io/pricing.


Capabilities

Stacks

  • Full Compose lifecycle: create, deploy, restart, stop, pull
  • Monaco editor with diff preview before save and one-click rollback
  • Git-sourced stacks pulled and synced from any repository
  • File explorer for compose, env, and supporting files
  • Stack labels for grouping and bulk operations
  • App Store with LinuxServer.io templates

Observability

  • Aggregated log search and stream across every container in the fleet
  • Live container stats, health checks, and image-update notifications
  • Threshold alerts for CPU, memory, and network
  • Read-only audit log of every action
  • Network topology view of containers, networks, and nodes

Fleet

  • Multi-node management via authenticated HTTP and WebSocket proxy
  • Fleet view with grid and topology layouts
  • Fleet snapshots of compose and env across the fleet
  • Pilot Agent for nodes behind NAT or strict firewalls
  • Node compatibility checks before deploying

Automation

Security

Operations


Quick start

Sencho runs in a single container.

services:
  sencho:
    image: saelix/sencho:latest
    container_name: sencho
    restart: unless-stopped
    ports:
      - "1852:1852"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - ./data:/app/data
      # 1:1 Compose Path Rule: the host path MUST match the container path
      - /opt/docker:/opt/docker
    environment:
      - COMPOSE_DIR=/opt/docker
      - DATA_DIR=/app/data
docker compose up -d

Open http://your-server:1852 and create your admin account.

Always front Sencho with a TLS-terminating reverse proxy in production. See the self-hosting guide for hardening, environment variables, and reverse-proxy examples.

Run with docker run instead
docker run -d --name sencho \
  -p 1852:1852 \
  -v /var/run/docker.sock:/var/run/docker.sock \
  -v sencho_data:/app/data \
  -e COMPOSE_DIR=/opt/docker \
  saelix/sencho:latest

For the full walkthrough, see the quickstart guide.


Adding remote nodes

To manage a second machine, install Sencho on it the same way, then add it from the primary dashboard with its URL and a long-lived API token. The primary proxies authenticated HTTPS and WebSocket requests to the remote instance. No SSH, no exposed Docker socket, no agent process on the remote. Nodes behind NAT or strict firewalls can opt into the Pilot Agent for outbound-only connectivity.

See the multi-node guide for the full token-bearer flow.


Screenshots

Stacks Editor
Fleet Logs

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Self-hosted Docker Compose management platform. Great for homelabs, small DevOps teams, and platform engineers.
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