mirror of
https://github.com/deuxfleurs-org/garage.git
synced 2026-08-30 00:47:15 +00:00
Reorganize code
This commit is contained in:
Alex Auvolat
@@ -0,0 +1,692 @@
|
||||
use std::collections::HashMap;
|
||||
use std::hash::Hash as StdHash;
|
||||
use std::hash::Hasher;
|
||||
use std::io::{Read, Write};
|
||||
use std::net::{IpAddr, SocketAddr};
|
||||
use std::path::PathBuf;
|
||||
use std::sync::atomic::{AtomicUsize, Ordering};
|
||||
use std::sync::Arc;
|
||||
use std::time::Duration;
|
||||
|
||||
use futures::future::join_all;
|
||||
use futures::select;
|
||||
use futures_util::future::*;
|
||||
use serde::{Deserialize, Serialize};
|
||||
use sha2::{Digest, Sha256};
|
||||
use tokio::prelude::*;
|
||||
use tokio::sync::watch;
|
||||
use tokio::sync::Mutex;
|
||||
|
||||
use crate::background::BackgroundRunner;
|
||||
use crate::data::*;
|
||||
use crate::error::Error;
|
||||
|
||||
use crate::rpc::rpc_client::*;
|
||||
use crate::rpc::rpc_server::*;
|
||||
|
||||
const PING_INTERVAL: Duration = Duration::from_secs(10);
|
||||
const PING_TIMEOUT: Duration = Duration::from_secs(2);
|
||||
const MAX_FAILURES_BEFORE_CONSIDERED_DOWN: usize = 5;
|
||||
|
||||
pub const MEMBERSHIP_RPC_PATH: &str = "_membership";
|
||||
|
||||
#[derive(Debug, Serialize, Deserialize)]
|
||||
pub enum Message {
|
||||
Ok,
|
||||
Ping(PingMessage),
|
||||
PullStatus,
|
||||
PullConfig,
|
||||
AdvertiseNodesUp(Vec<AdvertisedNode>),
|
||||
AdvertiseConfig(NetworkConfig),
|
||||
}
|
||||
|
||||
impl RpcMessage for Message {}
|
||||
|
||||
#[derive(Debug, Serialize, Deserialize)]
|
||||
pub struct PingMessage {
|
||||
pub id: UUID,
|
||||
pub rpc_port: u16,
|
||||
|
||||
pub status_hash: Hash,
|
||||
pub config_version: u64,
|
||||
|
||||
pub state_info: StateInfo,
|
||||
}
|
||||
|
||||
#[derive(Clone, Debug, Serialize, Deserialize)]
|
||||
pub struct AdvertisedNode {
|
||||
pub id: UUID,
|
||||
pub addr: SocketAddr,
|
||||
|
||||
pub is_up: bool,
|
||||
pub last_seen: u64,
|
||||
|
||||
pub state_info: StateInfo,
|
||||
}
|
||||
|
||||
#[derive(Clone, Debug, Serialize, Deserialize)]
|
||||
pub struct NetworkConfig {
|
||||
pub members: HashMap<UUID, NetworkConfigEntry>,
|
||||
pub version: u64,
|
||||
}
|
||||
|
||||
#[derive(Clone, Debug, Serialize, Deserialize)]
|
||||
pub struct NetworkConfigEntry {
|
||||
pub datacenter: String,
|
||||
pub n_tokens: u32,
|
||||
pub tag: String,
|
||||
}
|
||||
|
||||
pub struct System {
|
||||
pub id: UUID,
|
||||
pub data_dir: PathBuf,
|
||||
pub rpc_local_port: u16,
|
||||
|
||||
pub state_info: StateInfo,
|
||||
|
||||
pub rpc_http_client: Arc<RpcHttpClient>,
|
||||
rpc_client: Arc<RpcClient<Message>>,
|
||||
|
||||
pub status: watch::Receiver<Arc<Status>>,
|
||||
pub ring: watch::Receiver<Arc<Ring>>,
|
||||
|
||||
update_lock: Mutex<(watch::Sender<Arc<Status>>, watch::Sender<Arc<Ring>>)>,
|
||||
|
||||
pub background: Arc<BackgroundRunner>,
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
pub struct Status {
|
||||
pub nodes: HashMap<UUID, Arc<StatusEntry>>,
|
||||
pub hash: Hash,
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct StatusEntry {
|
||||
pub addr: SocketAddr,
|
||||
pub last_seen: u64,
|
||||
pub num_failures: AtomicUsize,
|
||||
pub state_info: StateInfo,
|
||||
}
|
||||
|
||||
impl StatusEntry {
|
||||
pub fn is_up(&self) -> bool {
|
||||
self.num_failures.load(Ordering::SeqCst) < MAX_FAILURES_BEFORE_CONSIDERED_DOWN
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, Serialize, Deserialize)]
|
||||
pub struct StateInfo {
|
||||
pub hostname: String,
|
||||
}
|
||||
|
||||
#[derive(Clone)]
|
||||
pub struct Ring {
|
||||
pub config: NetworkConfig,
|
||||
pub ring: Vec<RingEntry>,
|
||||
pub n_datacenters: usize,
|
||||
}
|
||||
|
||||
#[derive(Clone, Debug)]
|
||||
pub struct RingEntry {
|
||||
pub location: Hash,
|
||||
pub node: UUID,
|
||||
pub datacenter: u64,
|
||||
}
|
||||
|
||||
impl Status {
|
||||
fn handle_ping(&mut self, ip: IpAddr, info: &PingMessage) -> bool {
|
||||
let addr = SocketAddr::new(ip, info.rpc_port);
|
||||
let old_status = self.nodes.insert(
|
||||
info.id,
|
||||
Arc::new(StatusEntry {
|
||||
addr,
|
||||
last_seen: now_msec(),
|
||||
num_failures: AtomicUsize::from(0),
|
||||
state_info: info.state_info.clone(),
|
||||
}),
|
||||
);
|
||||
match old_status {
|
||||
None => {
|
||||
info!("Newly pingable node: {}", hex::encode(&info.id));
|
||||
true
|
||||
}
|
||||
Some(x) => x.addr != addr,
|
||||
}
|
||||
}
|
||||
|
||||
fn recalculate_hash(&mut self) {
|
||||
let mut nodes = self.nodes.iter().collect::<Vec<_>>();
|
||||
nodes.sort_unstable_by_key(|(id, _status)| *id);
|
||||
|
||||
let mut hasher = Sha256::new();
|
||||
debug!("Current set of pingable nodes: --");
|
||||
for (id, status) in nodes {
|
||||
debug!("{} {}", hex::encode(&id), status.addr);
|
||||
hasher.input(format!("{} {}\n", hex::encode(&id), status.addr));
|
||||
}
|
||||
debug!("END --");
|
||||
self.hash
|
||||
.as_slice_mut()
|
||||
.copy_from_slice(&hasher.result()[..]);
|
||||
}
|
||||
}
|
||||
|
||||
impl Ring {
|
||||
fn rebuild_ring(&mut self) {
|
||||
let mut new_ring = vec![];
|
||||
let mut datacenters = vec![];
|
||||
|
||||
for (id, config) in self.config.members.iter() {
|
||||
let mut dc_hasher = std::collections::hash_map::DefaultHasher::new();
|
||||
config.datacenter.hash(&mut dc_hasher);
|
||||
let datacenter = dc_hasher.finish();
|
||||
|
||||
if !datacenters.contains(&datacenter) {
|
||||
datacenters.push(datacenter);
|
||||
}
|
||||
|
||||
for i in 0..config.n_tokens {
|
||||
let location = hash(format!("{} {}", hex::encode(&id), i).as_bytes());
|
||||
|
||||
new_ring.push(RingEntry {
|
||||
location: location.into(),
|
||||
node: *id,
|
||||
datacenter,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
new_ring.sort_unstable_by(|x, y| x.location.cmp(&y.location));
|
||||
self.ring = new_ring;
|
||||
self.n_datacenters = datacenters.len();
|
||||
|
||||
// eprintln!("RING: --");
|
||||
// for e in self.ring.iter() {
|
||||
// eprintln!("{:?}", e);
|
||||
// }
|
||||
// eprintln!("END --");
|
||||
}
|
||||
|
||||
pub fn walk_ring(&self, from: &Hash, n: usize) -> Vec<UUID> {
|
||||
if n >= self.config.members.len() {
|
||||
return self.config.members.keys().cloned().collect::<Vec<_>>();
|
||||
}
|
||||
|
||||
let start = match self.ring.binary_search_by(|x| x.location.cmp(from)) {
|
||||
Ok(i) => i,
|
||||
Err(i) => {
|
||||
if i == 0 {
|
||||
self.ring.len() - 1
|
||||
} else {
|
||||
i - 1
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
self.walk_ring_from_pos(start, n)
|
||||
}
|
||||
|
||||
fn walk_ring_from_pos(&self, start: usize, n: usize) -> Vec<UUID> {
|
||||
if n >= self.config.members.len() {
|
||||
return self.config.members.keys().cloned().collect::<Vec<_>>();
|
||||
}
|
||||
|
||||
let mut ret = vec![];
|
||||
let mut datacenters = vec![];
|
||||
|
||||
let mut delta = 0;
|
||||
while ret.len() < n {
|
||||
let i = (start + delta) % self.ring.len();
|
||||
delta += 1;
|
||||
|
||||
if !datacenters.contains(&self.ring[i].datacenter) {
|
||||
ret.push(self.ring[i].node);
|
||||
datacenters.push(self.ring[i].datacenter);
|
||||
} else if datacenters.len() == self.n_datacenters && !ret.contains(&self.ring[i].node) {
|
||||
ret.push(self.ring[i].node);
|
||||
}
|
||||
}
|
||||
|
||||
ret
|
||||
}
|
||||
}
|
||||
|
||||
fn gen_node_id(metadata_dir: &PathBuf) -> Result<UUID, Error> {
|
||||
let mut id_file = metadata_dir.clone();
|
||||
id_file.push("node_id");
|
||||
if id_file.as_path().exists() {
|
||||
let mut f = std::fs::File::open(id_file.as_path())?;
|
||||
let mut d = vec![];
|
||||
f.read_to_end(&mut d)?;
|
||||
if d.len() != 32 {
|
||||
return Err(Error::Message(format!("Corrupt node_id file")));
|
||||
}
|
||||
|
||||
let mut id = [0u8; 32];
|
||||
id.copy_from_slice(&d[..]);
|
||||
Ok(id.into())
|
||||
} else {
|
||||
let id = gen_uuid();
|
||||
|
||||
let mut f = std::fs::File::create(id_file.as_path())?;
|
||||
f.write_all(id.as_slice())?;
|
||||
Ok(id)
|
||||
}
|
||||
}
|
||||
|
||||
fn read_network_config(metadata_dir: &PathBuf) -> Result<NetworkConfig, Error> {
|
||||
let mut path = metadata_dir.clone();
|
||||
path.push("network_config");
|
||||
|
||||
let mut file = std::fs::OpenOptions::new()
|
||||
.read(true)
|
||||
.open(path.as_path())?;
|
||||
|
||||
let mut net_config_bytes = vec![];
|
||||
file.read_to_end(&mut net_config_bytes)?;
|
||||
|
||||
let net_config = rmp_serde::decode::from_read_ref(&net_config_bytes[..])
|
||||
.expect("Unable to parse network configuration file (has version format changed?).");
|
||||
|
||||
Ok(net_config)
|
||||
}
|
||||
|
||||
impl System {
|
||||
pub fn new(
|
||||
data_dir: PathBuf,
|
||||
rpc_http_client: Arc<RpcHttpClient>,
|
||||
background: Arc<BackgroundRunner>,
|
||||
rpc_server: &mut RpcServer,
|
||||
) -> Arc<Self> {
|
||||
let id = gen_node_id(&data_dir).expect("Unable to read or generate node ID");
|
||||
info!("Node ID: {}", hex::encode(&id));
|
||||
|
||||
let net_config = match read_network_config(&data_dir) {
|
||||
Ok(x) => x,
|
||||
Err(e) => {
|
||||
info!(
|
||||
"No valid previous network configuration stored ({}), starting fresh.",
|
||||
e
|
||||
);
|
||||
NetworkConfig {
|
||||
members: HashMap::new(),
|
||||
version: 0,
|
||||
}
|
||||
}
|
||||
};
|
||||
let mut status = Status {
|
||||
nodes: HashMap::new(),
|
||||
hash: Hash::default(),
|
||||
};
|
||||
status.recalculate_hash();
|
||||
let (update_status, status) = watch::channel(Arc::new(status));
|
||||
|
||||
let state_info = StateInfo {
|
||||
hostname: gethostname::gethostname()
|
||||
.into_string()
|
||||
.unwrap_or("<invalid utf-8>".to_string()),
|
||||
};
|
||||
|
||||
let mut ring = Ring {
|
||||
config: net_config,
|
||||
ring: Vec::new(),
|
||||
n_datacenters: 0,
|
||||
};
|
||||
ring.rebuild_ring();
|
||||
let (update_ring, ring) = watch::channel(Arc::new(ring));
|
||||
|
||||
let rpc_path = MEMBERSHIP_RPC_PATH.to_string();
|
||||
let rpc_client = RpcClient::new(
|
||||
RpcAddrClient::<Message>::new(rpc_http_client.clone(), rpc_path.clone()),
|
||||
background.clone(),
|
||||
status.clone(),
|
||||
);
|
||||
|
||||
let sys = Arc::new(System {
|
||||
id,
|
||||
data_dir,
|
||||
rpc_local_port: rpc_server.bind_addr.port(),
|
||||
state_info,
|
||||
rpc_http_client,
|
||||
rpc_client,
|
||||
status,
|
||||
ring,
|
||||
update_lock: Mutex::new((update_status, update_ring)),
|
||||
background,
|
||||
});
|
||||
sys.clone().register_handler(rpc_server, rpc_path);
|
||||
sys
|
||||
}
|
||||
|
||||
fn register_handler(self: Arc<Self>, rpc_server: &mut RpcServer, path: String) {
|
||||
rpc_server.add_handler::<Message, _, _>(path, move |msg, addr| {
|
||||
let self2 = self.clone();
|
||||
async move {
|
||||
match msg {
|
||||
Message::Ping(ping) => self2.handle_ping(&addr, &ping).await,
|
||||
|
||||
Message::PullStatus => self2.handle_pull_status(),
|
||||
Message::PullConfig => self2.handle_pull_config(),
|
||||
Message::AdvertiseNodesUp(adv) => self2.handle_advertise_nodes_up(&adv).await,
|
||||
Message::AdvertiseConfig(adv) => self2.handle_advertise_config(&adv).await,
|
||||
|
||||
_ => Err(Error::BadRequest(format!("Unexpected RPC message"))),
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
pub fn rpc_client<M: RpcMessage + 'static>(self: &Arc<Self>, path: &str) -> Arc<RpcClient<M>> {
|
||||
RpcClient::new(
|
||||
RpcAddrClient::new(self.rpc_http_client.clone(), path.to_string()),
|
||||
self.background.clone(),
|
||||
self.status.clone(),
|
||||
)
|
||||
}
|
||||
|
||||
async fn save_network_config(self: Arc<Self>) -> Result<(), Error> {
|
||||
let mut path = self.data_dir.clone();
|
||||
path.push("network_config");
|
||||
|
||||
let ring = self.ring.borrow().clone();
|
||||
let data = rmp_to_vec_all_named(&ring.config)?;
|
||||
|
||||
let mut f = tokio::fs::File::create(path.as_path()).await?;
|
||||
f.write_all(&data[..]).await?;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub fn make_ping(&self) -> Message {
|
||||
let status = self.status.borrow().clone();
|
||||
let ring = self.ring.borrow().clone();
|
||||
Message::Ping(PingMessage {
|
||||
id: self.id,
|
||||
rpc_port: self.rpc_local_port,
|
||||
status_hash: status.hash,
|
||||
config_version: ring.config.version,
|
||||
state_info: self.state_info.clone(),
|
||||
})
|
||||
}
|
||||
|
||||
pub async fn broadcast(self: Arc<Self>, msg: Message, timeout: Duration) {
|
||||
let status = self.status.borrow().clone();
|
||||
let to = status
|
||||
.nodes
|
||||
.keys()
|
||||
.filter(|x| **x != self.id)
|
||||
.cloned()
|
||||
.collect::<Vec<_>>();
|
||||
self.rpc_client.call_many(&to[..], msg, timeout).await;
|
||||
}
|
||||
|
||||
pub async fn bootstrap(self: Arc<Self>, peers: &[SocketAddr]) {
|
||||
let bootstrap_peers = peers.iter().map(|ip| (*ip, None)).collect::<Vec<_>>();
|
||||
self.clone().ping_nodes(bootstrap_peers).await;
|
||||
|
||||
self.clone()
|
||||
.background
|
||||
.spawn_worker(format!("ping loop"), |stop_signal| {
|
||||
self.ping_loop(stop_signal).map(Ok)
|
||||
})
|
||||
.await;
|
||||
}
|
||||
|
||||
async fn ping_nodes(self: Arc<Self>, peers: Vec<(SocketAddr, Option<UUID>)>) {
|
||||
let ping_msg = self.make_ping();
|
||||
let ping_resps = join_all(peers.iter().map(|(addr, id_option)| {
|
||||
let sys = self.clone();
|
||||
let ping_msg_ref = &ping_msg;
|
||||
async move {
|
||||
(
|
||||
id_option,
|
||||
addr,
|
||||
sys.rpc_client
|
||||
.by_addr()
|
||||
.call(&addr, ping_msg_ref, PING_TIMEOUT)
|
||||
.await,
|
||||
)
|
||||
}
|
||||
}))
|
||||
.await;
|
||||
|
||||
let update_locked = self.update_lock.lock().await;
|
||||
let mut status: Status = self.status.borrow().as_ref().clone();
|
||||
let ring = self.ring.borrow().clone();
|
||||
|
||||
let mut has_changes = false;
|
||||
let mut to_advertise = vec![];
|
||||
|
||||
for (id_option, addr, ping_resp) in ping_resps {
|
||||
if let Ok(Ok(Message::Ping(info))) = ping_resp {
|
||||
let is_new = status.handle_ping(addr.ip(), &info);
|
||||
if is_new {
|
||||
has_changes = true;
|
||||
to_advertise.push(AdvertisedNode {
|
||||
id: info.id,
|
||||
addr: *addr,
|
||||
is_up: true,
|
||||
last_seen: now_msec(),
|
||||
state_info: info.state_info.clone(),
|
||||
});
|
||||
}
|
||||
if is_new || status.hash != info.status_hash {
|
||||
self.background
|
||||
.spawn_cancellable(self.clone().pull_status(info.id).map(Ok));
|
||||
}
|
||||
if is_new || ring.config.version < info.config_version {
|
||||
self.background
|
||||
.spawn_cancellable(self.clone().pull_config(info.id).map(Ok));
|
||||
}
|
||||
} else if let Some(id) = id_option {
|
||||
if let Some(st) = status.nodes.get_mut(id) {
|
||||
st.num_failures.fetch_add(1, Ordering::SeqCst);
|
||||
if !st.is_up() {
|
||||
warn!("Node {:?} seems to be down.", id);
|
||||
if !ring.config.members.contains_key(id) {
|
||||
info!("Removing node {:?} from status (not in config and not responding to pings anymore)", id);
|
||||
drop(st);
|
||||
status.nodes.remove(&id);
|
||||
has_changes = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
if has_changes {
|
||||
status.recalculate_hash();
|
||||
}
|
||||
if let Err(e) = update_locked.0.broadcast(Arc::new(status)) {
|
||||
error!("In ping_nodes: could not save status update ({})", e);
|
||||
}
|
||||
drop(update_locked);
|
||||
|
||||
if to_advertise.len() > 0 {
|
||||
self.broadcast(Message::AdvertiseNodesUp(to_advertise), PING_TIMEOUT)
|
||||
.await;
|
||||
}
|
||||
}
|
||||
|
||||
pub async fn handle_ping(
|
||||
self: Arc<Self>,
|
||||
from: &SocketAddr,
|
||||
ping: &PingMessage,
|
||||
) -> Result<Message, Error> {
|
||||
let update_locked = self.update_lock.lock().await;
|
||||
let mut status: Status = self.status.borrow().as_ref().clone();
|
||||
|
||||
let is_new = status.handle_ping(from.ip(), ping);
|
||||
if is_new {
|
||||
status.recalculate_hash();
|
||||
}
|
||||
let status_hash = status.hash;
|
||||
let config_version = self.ring.borrow().config.version;
|
||||
|
||||
update_locked.0.broadcast(Arc::new(status))?;
|
||||
drop(update_locked);
|
||||
|
||||
if is_new || status_hash != ping.status_hash {
|
||||
self.background
|
||||
.spawn_cancellable(self.clone().pull_status(ping.id).map(Ok));
|
||||
}
|
||||
if is_new || config_version < ping.config_version {
|
||||
self.background
|
||||
.spawn_cancellable(self.clone().pull_config(ping.id).map(Ok));
|
||||
}
|
||||
|
||||
Ok(self.make_ping())
|
||||
}
|
||||
|
||||
pub fn handle_pull_status(&self) -> Result<Message, Error> {
|
||||
let status = self.status.borrow().clone();
|
||||
let mut mem = vec![];
|
||||
for (node, status) in status.nodes.iter() {
|
||||
let state_info = if *node == self.id {
|
||||
self.state_info.clone()
|
||||
} else {
|
||||
status.state_info.clone()
|
||||
};
|
||||
mem.push(AdvertisedNode {
|
||||
id: *node,
|
||||
addr: status.addr,
|
||||
is_up: status.is_up(),
|
||||
last_seen: status.last_seen,
|
||||
state_info,
|
||||
});
|
||||
}
|
||||
Ok(Message::AdvertiseNodesUp(mem))
|
||||
}
|
||||
|
||||
pub fn handle_pull_config(&self) -> Result<Message, Error> {
|
||||
let ring = self.ring.borrow().clone();
|
||||
Ok(Message::AdvertiseConfig(ring.config.clone()))
|
||||
}
|
||||
|
||||
pub async fn handle_advertise_nodes_up(
|
||||
self: Arc<Self>,
|
||||
adv: &[AdvertisedNode],
|
||||
) -> Result<Message, Error> {
|
||||
let mut to_ping = vec![];
|
||||
|
||||
let update_lock = self.update_lock.lock().await;
|
||||
let mut status: Status = self.status.borrow().as_ref().clone();
|
||||
let mut has_changed = false;
|
||||
|
||||
for node in adv.iter() {
|
||||
if node.id == self.id {
|
||||
// learn our own ip address
|
||||
let self_addr = SocketAddr::new(node.addr.ip(), self.rpc_local_port);
|
||||
let old_self = status.nodes.insert(
|
||||
node.id,
|
||||
Arc::new(StatusEntry {
|
||||
addr: self_addr,
|
||||
last_seen: now_msec(),
|
||||
num_failures: AtomicUsize::from(0),
|
||||
state_info: self.state_info.clone(),
|
||||
}),
|
||||
);
|
||||
has_changed = match old_self {
|
||||
None => true,
|
||||
Some(x) => x.addr != self_addr,
|
||||
};
|
||||
} else {
|
||||
let ping_them = match status.nodes.get(&node.id) {
|
||||
// Case 1: new node
|
||||
None => true,
|
||||
// Case 2: the node might have changed address
|
||||
Some(our_node) => node.is_up && !our_node.is_up() && our_node.addr != node.addr,
|
||||
};
|
||||
if ping_them {
|
||||
to_ping.push((node.addr, Some(node.id)));
|
||||
}
|
||||
}
|
||||
}
|
||||
if has_changed {
|
||||
status.recalculate_hash();
|
||||
}
|
||||
update_lock.0.broadcast(Arc::new(status))?;
|
||||
drop(update_lock);
|
||||
|
||||
if to_ping.len() > 0 {
|
||||
self.background
|
||||
.spawn_cancellable(self.clone().ping_nodes(to_ping).map(Ok));
|
||||
}
|
||||
|
||||
Ok(Message::Ok)
|
||||
}
|
||||
|
||||
pub async fn handle_advertise_config(
|
||||
self: Arc<Self>,
|
||||
adv: &NetworkConfig,
|
||||
) -> Result<Message, Error> {
|
||||
let update_lock = self.update_lock.lock().await;
|
||||
let mut ring: Ring = self.ring.borrow().as_ref().clone();
|
||||
|
||||
if adv.version > ring.config.version {
|
||||
ring.config = adv.clone();
|
||||
ring.rebuild_ring();
|
||||
update_lock.1.broadcast(Arc::new(ring))?;
|
||||
drop(update_lock);
|
||||
|
||||
self.background.spawn_cancellable(
|
||||
self.clone()
|
||||
.broadcast(Message::AdvertiseConfig(adv.clone()), PING_TIMEOUT)
|
||||
.map(Ok),
|
||||
);
|
||||
self.background.spawn(self.clone().save_network_config());
|
||||
}
|
||||
|
||||
Ok(Message::Ok)
|
||||
}
|
||||
|
||||
pub async fn ping_loop(self: Arc<Self>, mut stop_signal: watch::Receiver<bool>) {
|
||||
loop {
|
||||
let restart_at = tokio::time::delay_for(PING_INTERVAL);
|
||||
|
||||
let status = self.status.borrow().clone();
|
||||
let ping_addrs = status
|
||||
.nodes
|
||||
.iter()
|
||||
.filter(|(id, _)| **id != self.id)
|
||||
.map(|(id, status)| (status.addr, Some(*id)))
|
||||
.collect::<Vec<_>>();
|
||||
|
||||
self.clone().ping_nodes(ping_addrs).await;
|
||||
|
||||
select! {
|
||||
_ = restart_at.fuse() => (),
|
||||
must_exit = stop_signal.recv().fuse() => {
|
||||
match must_exit {
|
||||
None | Some(true) => return,
|
||||
_ => (),
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub fn pull_status(
|
||||
self: Arc<Self>,
|
||||
peer: UUID,
|
||||
) -> impl futures::future::Future<Output = ()> + Send + 'static {
|
||||
async move {
|
||||
let resp = self
|
||||
.rpc_client
|
||||
.call(peer, Message::PullStatus, PING_TIMEOUT)
|
||||
.await;
|
||||
if let Ok(Message::AdvertiseNodesUp(nodes)) = resp {
|
||||
let _: Result<_, _> = self.handle_advertise_nodes_up(&nodes).await;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub async fn pull_config(self: Arc<Self>, peer: UUID) {
|
||||
let resp = self
|
||||
.rpc_client
|
||||
.call(peer, Message::PullConfig, PING_TIMEOUT)
|
||||
.await;
|
||||
if let Ok(Message::AdvertiseConfig(config)) = resp {
|
||||
let _: Result<_, _> = self.handle_advertise_config(&config).await;
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user