diff options
Diffstat (limited to 'src/rpc')
| -rw-r--r-- | src/rpc/Cargo.toml | 11 | ||||
| -rw-r--r-- | src/rpc/kubernetes.rs | 2 | ||||
| -rw-r--r-- | src/rpc/layout.rs | 56 | ||||
| -rw-r--r-- | src/rpc/metrics.rs | 19 | ||||
| -rw-r--r-- | src/rpc/rpc_helper.rs | 244 | ||||
| -rw-r--r-- | src/rpc/system.rs | 252 |
6 files changed, 375 insertions, 209 deletions
diff --git a/src/rpc/Cargo.toml b/src/rpc/Cargo.toml index 654c1dc6..5bb6aae0 100644 --- a/src/rpc/Cargo.toml +++ b/src/rpc/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "garage_rpc" -version = "0.7.0" +version = "0.8.0" authors = ["Alex Auvolat <alex@adnab.me>"] edition = "2018" license = "AGPL-3.0" @@ -14,8 +14,7 @@ path = "lib.rs" # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html [dependencies] -garage_util = { version = "0.7.0", path = "../util" } -garage_admin = { version = "0.7.0", path = "../admin" } +garage_util = { version = "0.8.0", path = "../util" } arc-swap = "1.0" bytes = "1.0" @@ -47,11 +46,11 @@ tokio = { version = "1.0", default-features = false, features = ["rt", "rt-multi tokio-stream = { version = "0.1", features = ["net"] } opentelemetry = "0.17" -#netapp = { version = "0.3.0", git = "https://git.deuxfleurs.fr/lx/netapp" } -#netapp = { version = "0.4", path = "../../../netapp", features = ["telemetry"] } -netapp = { version = "0.4.2", features = ["telemetry"] } +netapp = { version = "0.5.2", features = ["telemetry"] } hyper = { version = "0.14", features = ["client", "http1", "runtime", "tcp"] } + [features] kubernetes-discovery = [ "kube", "k8s-openapi", "openssl", "schemars" ] +system-libs = [ "sodiumoxide/use-pkg-config" ] diff --git a/src/rpc/kubernetes.rs b/src/rpc/kubernetes.rs index 939a0eed..197245aa 100644 --- a/src/rpc/kubernetes.rs +++ b/src/rpc/kubernetes.rs @@ -56,7 +56,7 @@ pub async fn get_kubernetes_nodes( let mut ret = Vec::with_capacity(nodes.items.len()); for node in nodes { - println!("Found Pod: {:?}", node.metadata.name); + info!("Found Pod: {:?}", node.metadata.name); let pubkey = &node .metadata diff --git a/src/rpc/layout.rs b/src/rpc/layout.rs index a878f19c..16d573c7 100644 --- a/src/rpc/layout.rs +++ b/src/rpc/layout.rs @@ -9,6 +9,7 @@ use serde::{Deserialize, Serialize}; use garage_util::crdt::{AutoCrdt, Crdt, LwwMap}; use garage_util::data::*; +use garage_util::error::*; use crate::graph_algo::*; @@ -144,6 +145,61 @@ impl ClusterLayout { } } + pub fn apply_staged_changes(mut self, version: Option<u64>) -> Result<Self, Error> { + match version { + None => { + let error = r#" +Please pass the new layout version number to ensure that you are writing the correct version of the cluster layout. +To know the correct value of the new layout version, invoke `garage layout show` and review the proposed changes. + "#; + return Err(Error::Message(error.into())); + } + Some(v) => { + if v != self.version + 1 { + return Err(Error::Message("Invalid new layout version".into())); + } + } + } + + self.roles.merge(&self.staging); + self.roles.retain(|(_, _, v)| v.0.is_some()); + + if !self.calculate_partition_assignation() { + return Err(Error::Message("Could not calculate new assignation of partitions to nodes. This can happen if there are less nodes than the desired number of copies of your data (see the replication_mode configuration parameter).".into())); + } + + self.staging.clear(); + self.staging_hash = blake2sum(&rmp_to_vec_all_named(&self.staging).unwrap()[..]); + + self.version += 1; + + Ok(self) + } + + pub fn revert_staged_changes(mut self, version: Option<u64>) -> Result<Self, Error> { + match version { + None => { + let error = r#" +Please pass the new layout version number to ensure that you are writing the correct version of the cluster layout. +To know the correct value of the new layout version, invoke `garage layout show` and review the proposed changes. + "#; + return Err(Error::Message(error.into())); + } + Some(v) => { + if v != self.version + 1 { + return Err(Error::Message("Invalid new layout version".into())); + } + } + } + + self.staging.clear(); + self.staging_hash = blake2sum(&rmp_to_vec_all_named(&self.staging).unwrap()[..]); + + self.version += 1; + + Ok(self) + } + /// Returns a list of IDs of nodes that currently have /// a role in the cluster pub fn node_ids(&self) -> &[Uuid] { diff --git a/src/rpc/metrics.rs b/src/rpc/metrics.rs index c900518c..61f8fa79 100644 --- a/src/rpc/metrics.rs +++ b/src/rpc/metrics.rs @@ -1,31 +1,18 @@ -use std::sync::Arc; - use opentelemetry::{global, metrics::*}; -use tokio::sync::Semaphore; /// TableMetrics reference all counter used for metrics pub struct RpcMetrics { - pub(crate) _rpc_available_permits: ValueObserver<u64>, - pub(crate) rpc_counter: Counter<u64>, pub(crate) rpc_timeout_counter: Counter<u64>, pub(crate) rpc_netapp_error_counter: Counter<u64>, pub(crate) rpc_garage_error_counter: Counter<u64>, pub(crate) rpc_duration: ValueRecorder<f64>, - pub(crate) rpc_queueing_time: ValueRecorder<f64>, } impl RpcMetrics { - pub fn new(sem: Arc<Semaphore>) -> Self { + pub fn new() -> Self { let meter = global::meter("garage_rpc"); RpcMetrics { - _rpc_available_permits: meter - .u64_value_observer("rpc.available_permits", move |observer| { - observer.observe(sem.available_permits() as u64, &[]) - }) - .with_description("Number of available RPC permits") - .init(), - rpc_counter: meter .u64_counter("rpc.request_counter") .with_description("Number of RPC requests emitted") @@ -46,10 +33,6 @@ impl RpcMetrics { .f64_value_recorder("rpc.duration") .with_description("Duration of RPCs") .init(), - rpc_queueing_time: meter - .f64_value_recorder("rpc.queueing_time") - .with_description("Time RPC requests were queued for before being sent") - .init(), } } } diff --git a/src/rpc/rpc_helper.rs b/src/rpc/rpc_helper.rs index 34717d3b..949aced6 100644 --- a/src/rpc/rpc_helper.rs +++ b/src/rpc/rpc_helper.rs @@ -7,7 +7,7 @@ use futures::stream::futures_unordered::FuturesUnordered; use futures::stream::StreamExt; use futures_util::future::FutureExt; use tokio::select; -use tokio::sync::{watch, Semaphore}; +use tokio::sync::watch; use opentelemetry::KeyValue; use opentelemetry::{ @@ -15,10 +15,14 @@ use opentelemetry::{ Context, }; -pub use netapp::endpoint::{Endpoint, EndpointHandler, Message as Rpc}; +pub use netapp::endpoint::{Endpoint, EndpointHandler, StreamingEndpointHandler}; +use netapp::message::IntoReq; +pub use netapp::message::{ + Message as Rpc, OrderTag, Req, RequestPriority, Resp, PRIO_BACKGROUND, PRIO_HIGH, PRIO_NORMAL, + PRIO_SECONDARY, +}; use netapp::peering::fullmesh::FullMeshPeeringStrategy; -pub use netapp::proto::*; -pub use netapp::{NetApp, NodeID}; +pub use netapp::{self, NetApp, NodeID}; use garage_util::background::BackgroundRunner; use garage_util::data::*; @@ -28,34 +32,37 @@ use garage_util::metrics::RecordDuration; use crate::metrics::RpcMetrics; use crate::ring::Ring; -const DEFAULT_TIMEOUT: Duration = Duration::from_secs(10); - -// Try to never have more than 200MB of outgoing requests -// buffered at the same time. Other requests are queued until -// space is freed. -const REQUEST_BUFFER_SIZE: usize = 200 * 1024 * 1024; +// Default RPC timeout = 5 minutes +const DEFAULT_TIMEOUT: Duration = Duration::from_secs(300); /// Strategy to apply when making RPC #[derive(Copy, Clone)] pub struct RequestStrategy { - /// Max time to wait for reponse - pub rs_timeout: Duration, /// Min number of response to consider the request successful pub rs_quorum: Option<usize>, /// Should requests be dropped after enough response are received pub rs_interrupt_after_quorum: bool, /// Request priority pub rs_priority: RequestPriority, + /// Custom timeout for this request + rs_timeout: Timeout, +} + +#[derive(Copy, Clone)] +enum Timeout { + None, + Default, + Custom(Duration), } impl RequestStrategy { /// Create a RequestStrategy with default timeout and not interrupting when quorum reached pub fn with_priority(prio: RequestPriority) -> Self { RequestStrategy { - rs_timeout: DEFAULT_TIMEOUT, rs_quorum: None, rs_interrupt_after_quorum: false, rs_priority: prio, + rs_timeout: Timeout::Default, } } /// Set quorum to be reached for request @@ -63,17 +70,22 @@ impl RequestStrategy { self.rs_quorum = Some(quorum); self } - /// Set timeout of the strategy - pub fn with_timeout(mut self, timeout: Duration) -> Self { - self.rs_timeout = timeout; - self - } /// Set if requests can be dropped after quorum has been reached /// In general true for read requests, and false for write pub fn interrupt_after_quorum(mut self, interrupt: bool) -> Self { self.rs_interrupt_after_quorum = interrupt; self } + /// Deactivate timeout for this request + pub fn without_timeout(mut self) -> Self { + self.rs_timeout = Timeout::None; + self + } + /// Set custom timeout for this request + pub fn with_custom_timeout(mut self, timeout: Duration) -> Self { + self.rs_timeout = Timeout::Custom(timeout); + self + } } #[derive(Clone)] @@ -84,8 +96,8 @@ struct RpcHelperInner { fullmesh: Arc<FullMeshPeeringStrategy>, background: Arc<BackgroundRunner>, ring: watch::Receiver<Arc<Ring>>, - request_buffer_semaphore: Arc<Semaphore>, metrics: RpcMetrics, + rpc_timeout: Duration, } impl RpcHelper { @@ -94,45 +106,35 @@ impl RpcHelper { fullmesh: Arc<FullMeshPeeringStrategy>, background: Arc<BackgroundRunner>, ring: watch::Receiver<Arc<Ring>>, + rpc_timeout: Option<Duration>, ) -> Self { - let sem = Arc::new(Semaphore::new(REQUEST_BUFFER_SIZE)); - - let metrics = RpcMetrics::new(sem.clone()); + let metrics = RpcMetrics::new(); Self(Arc::new(RpcHelperInner { our_node_id, fullmesh, background, ring, - request_buffer_semaphore: sem, metrics, + rpc_timeout: rpc_timeout.unwrap_or(DEFAULT_TIMEOUT), })) } - pub async fn call<M, H, S>( - &self, - endpoint: &Endpoint<M, H>, - to: Uuid, - msg: M, - strat: RequestStrategy, - ) -> Result<S, Error> - where - M: Rpc<Response = Result<S, Error>>, - H: EndpointHandler<M>, - { - self.call_arc(endpoint, to, Arc::new(msg), strat).await + pub fn rpc_timeout(&self) -> Duration { + self.0.rpc_timeout } - pub async fn call_arc<M, H, S>( + pub async fn call<M, N, H, S>( &self, endpoint: &Endpoint<M, H>, to: Uuid, - msg: Arc<M>, + msg: N, strat: RequestStrategy, ) -> Result<S, Error> where M: Rpc<Response = Result<S, Error>>, - H: EndpointHandler<M>, + N: IntoReq<M> + Send, + H: StreamingEndpointHandler<M>, { let metric_tags = [ KeyValue::new("rpc_endpoint", endpoint.path().to_string()), @@ -140,29 +142,27 @@ impl RpcHelper { KeyValue::new("to", format!("{:?}", to)), ]; - let msg_size = rmp_to_vec_all_named(&msg)?.len() as u32; - let permit = self - .0 - .request_buffer_semaphore - .acquire_many(msg_size) - .record_duration(&self.0.metrics.rpc_queueing_time, &metric_tags) - .await?; - self.0.metrics.rpc_counter.add(1, &metric_tags); let node_id = to.into(); let rpc_call = endpoint - .call(&node_id, msg, strat.rs_priority) + .call_streaming(&node_id, msg, strat.rs_priority) .record_duration(&self.0.metrics.rpc_duration, &metric_tags); + let timeout = async { + match strat.rs_timeout { + Timeout::None => futures::future::pending().await, + Timeout::Default => tokio::time::sleep(self.0.rpc_timeout).await, + Timeout::Custom(t) => tokio::time::sleep(t).await, + } + }; + select! { res = rpc_call => { - drop(permit); - if res.is_err() { self.0.metrics.rpc_netapp_error_counter.add(1, &metric_tags); } - let res = res?; + let res = res?.into_msg(); if res.is_err() { self.0.metrics.rpc_garage_error_counter.add(1, &metric_tags); @@ -170,46 +170,49 @@ impl RpcHelper { Ok(res?) } - _ = tokio::time::sleep(strat.rs_timeout) => { - drop(permit); + () = timeout => { self.0.metrics.rpc_timeout_counter.add(1, &metric_tags); Err(Error::Timeout) } } } - pub async fn call_many<M, H, S>( + pub async fn call_many<M, N, H, S>( &self, endpoint: &Endpoint<M, H>, to: &[Uuid], - msg: M, + msg: N, strat: RequestStrategy, - ) -> Vec<(Uuid, Result<S, Error>)> + ) -> Result<Vec<(Uuid, Result<S, Error>)>, Error> where M: Rpc<Response = Result<S, Error>>, - H: EndpointHandler<M>, + N: IntoReq<M>, + H: StreamingEndpointHandler<M>, { - let msg = Arc::new(msg); + let msg = msg.into_req().map_err(netapp::error::Error::from)?; + let resps = join_all( to.iter() - .map(|to| self.call_arc(endpoint, *to, msg.clone(), strat)), + .map(|to| self.call(endpoint, *to, msg.clone(), strat)), ) .await; - to.iter() + Ok(to + .iter() .cloned() .zip(resps.into_iter()) - .collect::<Vec<_>>() + .collect::<Vec<_>>()) } - pub async fn broadcast<M, H, S>( + pub async fn broadcast<M, N, H, S>( &self, endpoint: &Endpoint<M, H>, - msg: M, + msg: N, strat: RequestStrategy, - ) -> Vec<(Uuid, Result<S, Error>)> + ) -> Result<Vec<(Uuid, Result<S, Error>)>, Error> where M: Rpc<Response = Result<S, Error>>, - H: EndpointHandler<M>, + N: IntoReq<M>, + H: StreamingEndpointHandler<M>, { let to = self .0 @@ -223,16 +226,17 @@ impl RpcHelper { /// Make a RPC call to multiple servers, returning either a Vec of responses, /// or an error if quorum could not be reached due to too many errors - pub async fn try_call_many<M, H, S>( + pub async fn try_call_many<M, N, H, S>( &self, endpoint: &Arc<Endpoint<M, H>>, to: &[Uuid], - msg: M, + msg: N, strategy: RequestStrategy, ) -> Result<Vec<S>, Error> where M: Rpc<Response = Result<S, Error>> + 'static, - H: EndpointHandler<M> + 'static, + N: IntoReq<M>, + H: StreamingEndpointHandler<M> + 'static, S: Send + 'static, { let quorum = strategy.rs_quorum.unwrap_or(to.len()); @@ -262,20 +266,21 @@ impl RpcHelper { .await } - async fn try_call_many_internal<M, H, S>( + async fn try_call_many_internal<M, N, H, S>( &self, endpoint: &Arc<Endpoint<M, H>>, to: &[Uuid], - msg: M, + msg: N, strategy: RequestStrategy, quorum: usize, ) -> Result<Vec<S>, Error> where M: Rpc<Response = Result<S, Error>> + 'static, - H: EndpointHandler<M> + 'static, + N: IntoReq<M>, + H: StreamingEndpointHandler<M> + 'static, S: Send + 'static, { - let msg = Arc::new(msg); + let msg = msg.into_req().map_err(netapp::error::Error::from)?; // Build future for each request // They are not started now: they are added below in a FuturesUnordered @@ -285,7 +290,7 @@ impl RpcHelper { let msg = msg.clone(); let endpoint2 = endpoint.clone(); (to, async move { - self2.call_arc(&endpoint2, to, msg, strategy).await + self2.call(&endpoint2, to, msg, strategy).await }) }); @@ -299,47 +304,19 @@ impl RpcHelper { // to reach a quorum, priorizing nodes with the lowest latency. // When there are errors, we start new requests to compensate. - // Retrieve some status variables that we will use to sort requests - let peer_list = self.0.fullmesh.get_peer_list(); - let ring: Arc<Ring> = self.0.ring.borrow().clone(); - let our_zone = match ring.layout.node_role(&self.0.our_node_id) { - Some(pc) => &pc.zone, - None => "", - }; - - // Augment requests with some information used to sort them. - // The tuples are as follows: - // (is another node?, is another zone?, latency, node ID, request future) - // We store all of these tuples in a vec that we can sort. - // By sorting this vec, we priorize ourself, then nodes in the same zone, - // and within a same zone we priorize nodes with the lowest latency. - let mut requests = requests - .map(|(to, fut)| { - let peer_zone = match ring.layout.node_role(&to) { - Some(pc) => &pc.zone, - None => "", - }; - let peer_avg_ping = peer_list - .iter() - .find(|x| x.id.as_ref() == to.as_slice()) - .and_then(|pi| pi.avg_ping) - .unwrap_or_else(|| Duration::from_secs(1)); - ( - to != self.0.our_node_id, - peer_zone != our_zone, - peer_avg_ping, - to, - fut, - ) - }) + // Reorder requests to priorize closeness / low latency + let request_order = self.request_order(to); + let mut ord_requests = vec![(); request_order.len()] + .into_iter() + .map(|_| None) .collect::<Vec<_>>(); - - // Sort requests by (priorize ourself, priorize same zone, priorize low latency) - requests - .sort_by_key(|(diffnode, diffzone, ping, _to, _fut)| (*diffnode, *diffzone, *ping)); + for (to, fut) in requests { + let i = request_order.iter().position(|x| *x == to).unwrap(); + ord_requests[i] = Some((to, fut)); + } // Make an iterator to take requests in their sorted order - let mut requests = requests.into_iter(); + let mut requests = ord_requests.into_iter().map(Option::unwrap); // resp_stream will contain all of the requests that are currently in flight. // (for the moment none, they will be added in the loop below) @@ -350,7 +327,7 @@ impl RpcHelper { // If the current set of requests that are running is not enough to possibly // reach quorum, start some new requests. while successes.len() + resp_stream.len() < quorum { - if let Some((_, _, _, req_to, fut)) = requests.next() { + if let Some((req_to, fut)) = requests.next() { let tracer = opentelemetry::global::tracer("garage"); let span = tracer.start(format!("RPC to {:?}", req_to)); resp_stream.push(tokio::spawn( @@ -420,4 +397,49 @@ impl RpcHelper { Err(Error::Quorum(quorum, successes.len(), to.len(), errors)) } } + + pub fn request_order(&self, nodes: &[Uuid]) -> Vec<Uuid> { + // Retrieve some status variables that we will use to sort requests + let peer_list = self.0.fullmesh.get_peer_list(); + let ring: Arc<Ring> = self.0.ring.borrow().clone(); + let our_zone = match ring.layout.node_role(&self.0.our_node_id) { + Some(pc) => &pc.zone, + None => "", + }; + + // Augment requests with some information used to sort them. + // The tuples are as follows: + // (is another node?, is another zone?, latency, node ID, request future) + // We store all of these tuples in a vec that we can sort. + // By sorting this vec, we priorize ourself, then nodes in the same zone, + // and within a same zone we priorize nodes with the lowest latency. + let mut nodes = nodes + .iter() + .map(|to| { + let peer_zone = match ring.layout.node_role(to) { + Some(pc) => &pc.zone, + None => "", + }; + let peer_avg_ping = peer_list + .iter() + .find(|x| x.id.as_ref() == to.as_slice()) + .and_then(|pi| pi.avg_ping) + .unwrap_or_else(|| Duration::from_secs(10)); + ( + *to != self.0.our_node_id, + peer_zone != our_zone, + peer_avg_ping, + *to, + ) + }) + .collect::<Vec<_>>(); + + // Sort requests by (priorize ourself, priorize same zone, priorize low latency) + nodes.sort_by_key(|(diffnode, diffzone, ping, _to)| (*diffnode, *diffzone, *ping)); + + nodes + .into_iter() + .map(|(_, _, _, to)| to) + .collect::<Vec<_>>() + } } diff --git a/src/rpc/system.rs b/src/rpc/system.rs index 34031b10..7eb25195 100644 --- a/src/rpc/system.rs +++ b/src/rpc/system.rs @@ -2,7 +2,7 @@ use std::collections::HashMap; use std::io::{Read, Write}; use std::net::{IpAddr, SocketAddr}; -use std::path::Path; +use std::path::{Path, PathBuf}; use std::sync::{Arc, RwLock}; use std::time::{Duration, Instant}; @@ -16,9 +16,9 @@ use tokio::sync::watch; use tokio::sync::Mutex; use netapp::endpoint::{Endpoint, EndpointHandler}; +use netapp::message::*; use netapp::peering::fullmesh::FullMeshPeeringStrategy; -use netapp::proto::*; -use netapp::util::parse_and_resolve_peer_addr; +use netapp::util::parse_and_resolve_peer_addr_async; use netapp::{NetApp, NetworkKey, NodeID, NodeKey}; use garage_util::background::BackgroundRunner; @@ -37,10 +37,11 @@ use crate::rpc_helper::*; const DISCOVERY_INTERVAL: Duration = Duration::from_secs(60); const STATUS_EXCHANGE_INTERVAL: Duration = Duration::from_secs(10); -const PING_TIMEOUT: Duration = Duration::from_secs(2); -/// Version tag used for version check upon Netapp connection -pub const GARAGE_VERSION_TAG: u64 = 0x6761726167650007; // garage 0x0007 +/// Version tag used for version check upon Netapp connection. +/// Cluster nodes with different version tags are deemed +/// incompatible and will refuse to connect. +pub const GARAGE_VERSION_TAG: u64 = 0x6761726167650008; // garage 0x0008 /// RPC endpoint used for calls related to membership pub const SYSTEM_RPC_PATH: &str = "garage_rpc/membership.rs/SystemRpc"; @@ -90,7 +91,7 @@ pub struct System { rpc_listen_addr: SocketAddr, rpc_public_addr: Option<SocketAddr>, - bootstrap_peers: Vec<(NodeID, SocketAddr)>, + bootstrap_peers: Vec<String>, consul_discovery: Option<ConsulDiscoveryParam>, #[cfg(feature = "kubernetes-discovery")] @@ -104,6 +105,9 @@ pub struct System { /// The job runner of this node pub background: Arc<BackgroundRunner>, + + /// Path to metadata directory + pub metadata_dir: PathBuf, } #[derive(Debug, Clone, Serialize, Deserialize)] @@ -194,7 +198,7 @@ impl System { replication_factor: usize, zone_redundancy: usize, config: &Config, - ) -> Arc<Self> { + ) -> Result<Arc<Self>, Error> { let node_key = gen_node_key(&config.metadata_dir).expect("Unable to read or generate node ID"); info!( @@ -202,11 +206,21 @@ impl System { hex::encode(&node_key.public_key()[..8]) ); - let persist_cluster_layout = Persister::new(&config.metadata_dir, "cluster_layout"); + let persist_cluster_layout: Persister<ClusterLayout> = + Persister::new(&config.metadata_dir, "cluster_layout"); let persist_peer_list = Persister::new(&config.metadata_dir, "peer_list"); let cluster_layout = match persist_cluster_layout.load() { - Ok(x) => x, + Ok(x) => { + if x.replication_factor != replication_factor { + return Err(Error::Message(format!( + "Prevous cluster layout has replication factor {}, which is different than the one specified in the config file ({}). The previous cluster layout can be purged, if you know what you are doing, simply by deleting the `cluster_layout` file in your metadata directory.", + x.replication_factor, + replication_factor + ))); + } + x + } Err(e) => { info!( "No valid previous cluster layout stored ({}), starting fresh.", @@ -228,8 +242,29 @@ impl System { let ring = Ring::new(cluster_layout, replication_factor); let (update_ring, ring) = watch::channel(Arc::new(ring)); - let rpc_public_addr = match config.rpc_public_addr { - Some(a) => Some(a), + let rpc_public_addr = match &config.rpc_public_addr { + Some(a_str) => { + use std::net::ToSocketAddrs; + match a_str.to_socket_addrs() { + Err(e) => { + error!( + "Cannot resolve rpc_public_addr {} from config file: {}.", + a_str, e + ); + None + } + Ok(a) => { + let a = a.collect::<Vec<_>>(); + if a.is_empty() { + error!("rpc_public_addr {} resolve to no known IP address", a_str); + } + if a.len() > 1 { + warn!("Multiple possible resolutions for rpc_public_addr: {:?}. Taking the first one.", a); + } + a.into_iter().next() + } + } + } None => { let addr = get_default_ip().map(|ip| SocketAddr::new(ip, config.rpc_bind_addr.port())); @@ -239,13 +274,15 @@ impl System { addr } }; + if rpc_public_addr.is_none() { + warn!("This Garage node does not know its publicly reachable RPC address, this might hamper intra-cluster communication."); + } let netapp = NetApp::new(GARAGE_VERSION_TAG, network_key, node_key); - let fullmesh = FullMeshPeeringStrategy::new( - netapp.clone(), - config.bootstrap_peers.clone(), - rpc_public_addr, - ); + let fullmesh = FullMeshPeeringStrategy::new(netapp.clone(), vec![], rpc_public_addr); + if let Some(ping_timeout) = config.rpc_ping_timeout_msec { + fullmesh.set_ping_timeout_millis(ping_timeout); + } let system_endpoint = netapp.endpoint(SYSTEM_RPC_PATH.into()); @@ -283,7 +320,13 @@ impl System { node_status: RwLock::new(HashMap::new()), netapp: netapp.clone(), fullmesh: fullmesh.clone(), - rpc: RpcHelper::new(netapp.id.into(), fullmesh, background.clone(), ring.clone()), + rpc: RpcHelper::new( + netapp.id.into(), + fullmesh, + background.clone(), + ring.clone(), + config.rpc_timeout_msec.map(Duration::from_millis), + ), system_endpoint, replication_factor, rpc_listen_addr: config.rpc_bind_addr, @@ -296,9 +339,10 @@ impl System { ring, update_ring: Mutex::new(update_ring), background, + metadata_dir: config.metadata_dir.clone(), }); sys.system_endpoint.set_handler(sys.clone()); - sys + Ok(sys) } /// Perform bootstraping, starting the ping loop @@ -313,6 +357,80 @@ impl System { ); } + // ---- Administrative operations (directly available and + // also available through RPC) ---- + + pub fn get_known_nodes(&self) -> Vec<KnownNodeInfo> { + let node_status = self.node_status.read().unwrap(); + let known_nodes = self + .fullmesh + .get_peer_list() + .iter() + .map(|n| KnownNodeInfo { + id: n.id.into(), + addr: n.addr, + is_up: n.is_up(), + last_seen_secs_ago: n + .last_seen + .map(|t| (Instant::now().saturating_duration_since(t)).as_secs()), + status: node_status + .get(&n.id.into()) + .cloned() + .map(|(_, st)| st) + .unwrap_or(NodeStatus { + hostname: "?".to_string(), + replication_factor: 0, + cluster_layout_version: 0, + cluster_layout_staging_hash: Hash::from([0u8; 32]), + }), + }) + .collect::<Vec<_>>(); + known_nodes + } + + pub fn get_cluster_layout(&self) -> ClusterLayout { + self.ring.borrow().layout.clone() + } + + pub async fn update_cluster_layout( + self: &Arc<Self>, + layout: &ClusterLayout, + ) -> Result<(), Error> { + self.handle_advertise_cluster_layout(layout).await?; + Ok(()) + } + + pub async fn connect(&self, node: &str) -> Result<(), Error> { + let (pubkey, addrs) = parse_and_resolve_peer_addr_async(node) + .await + .ok_or_else(|| { + Error::Message(format!( + "Unable to parse or resolve node specification: {}", + node + )) + })?; + let mut errors = vec![]; + for ip in addrs.iter() { + match self + .netapp + .clone() + .try_connect(*ip, pubkey) + .await + .err_context(CONNECT_ERROR_MESSAGE) + { + Ok(()) => return Ok(()), + Err(e) => { + errors.push((*ip, e)); + } + } + } + if errors.len() == 1 { + Err(Error::Message(errors[0].1.to_string())) + } else { + Err(Error::Message(format!("{:?}", errors))) + } + } + // ---- INTERNALS ---- async fn advertise_to_consul(self: Arc<Self>) -> Result<(), Error> { @@ -385,32 +503,11 @@ impl System { self.local_status.swap(Arc::new(new_si)); } + // --- RPC HANDLERS --- + async fn handle_connect(&self, node: &str) -> Result<SystemRpc, Error> { - let (pubkey, addrs) = parse_and_resolve_peer_addr(node).ok_or_else(|| { - Error::Message(format!( - "Unable to parse or resolve node specification: {}", - node - )) - })?; - let mut errors = vec![]; - for ip in addrs.iter() { - match self - .netapp - .clone() - .try_connect(*ip, pubkey) - .await - .err_context(CONNECT_ERROR_MESSAGE) - { - Ok(()) => return Ok(SystemRpc::Ok), - Err(e) => { - errors.push((*ip, e)); - } - } - } - return Err(Error::Message(format!( - "Could not connect to specified peers. Errors: {:?}", - errors - ))); + self.connect(node).await?; + Ok(SystemRpc::Ok) } fn handle_pull_cluster_layout(&self) -> SystemRpc { @@ -419,28 +516,7 @@ impl System { } fn handle_get_known_nodes(&self) -> SystemRpc { - let node_status = self.node_status.read().unwrap(); - let known_nodes = self - .fullmesh - .get_peer_list() - .iter() - .map(|n| KnownNodeInfo { - id: n.id.into(), - addr: n.addr, - is_up: n.is_up(), - last_seen_secs_ago: n.last_seen.map(|t| (Instant::now() - t).as_secs()), - status: node_status - .get(&n.id.into()) - .cloned() - .map(|(_, st)| st) - .unwrap_or(NodeStatus { - hostname: "?".to_string(), - replication_factor: 0, - cluster_layout_version: 0, - cluster_layout_staging_hash: Hash::from([0u8; 32]), - }), - }) - .collect::<Vec<_>>(); + let known_nodes = self.get_known_nodes(); SystemRpc::ReturnKnownNodes(known_nodes) } @@ -452,7 +528,7 @@ impl System { let local_info = self.local_status.load(); if local_info.replication_factor < info.replication_factor { - error!("Some node have a higher replication factor ({}) than this one ({}). This is not supported and might lead to bugs", + error!("Some node have a higher replication factor ({}) than this one ({}). This is not supported and will lead to data corruption. Shutting down for safety.", info.replication_factor, local_info.replication_factor); std::process::exit(1); @@ -477,9 +553,19 @@ impl System { } async fn handle_advertise_cluster_layout( - self: Arc<Self>, + self: &Arc<Self>, adv: &ClusterLayout, ) -> Result<SystemRpc, Error> { + if adv.replication_factor != self.replication_factor { + let msg = format!( + "Received a cluster layout from another node with replication factor {}, which is different from what we have in our configuration ({}). Discarding the cluster layout we received.", + adv.replication_factor, + self.replication_factor + ); + error!("{}", msg); + return Err(Error::Message(msg)); + } + let update_ring = self.update_ring.lock().await; let mut layout: ClusterLayout = self.ring.borrow().layout.clone(); @@ -505,7 +591,7 @@ impl System { SystemRpc::AdvertiseClusterLayout(layout), RequestStrategy::with_priority(PRIO_HIGH), ) - .await; + .await?; Ok(()) }); self.background.spawn(self.clone().save_cluster_layout()); @@ -520,11 +606,12 @@ impl System { self.update_local_status(); let local_status: NodeStatus = self.local_status.load().as_ref().clone(); - self.rpc + let _ = self + .rpc .broadcast( &self.system_endpoint, SystemRpc::AdvertiseStatus(local_status), - RequestStrategy::with_priority(PRIO_HIGH).with_timeout(PING_TIMEOUT), + RequestStrategy::with_priority(PRIO_HIGH), ) .await; @@ -550,7 +637,7 @@ impl System { if not_configured || no_peers || bad_peers { info!("Doing a bootstrap/discovery step (not_configured: {}, no_peers: {}, bad_peers: {})", not_configured, no_peers, bad_peers); - let mut ping_list = self.bootstrap_peers.clone(); + let mut ping_list = resolve_peers(&self.bootstrap_peers).await; // Add peer list from list stored on disk if let Ok(peers) = self.persist_peer_list.load_async().await { @@ -648,7 +735,7 @@ impl System { &self.system_endpoint, peer, SystemRpc::PullClusterLayout, - RequestStrategy::with_priority(PRIO_HIGH).with_timeout(PING_TIMEOUT), + RequestStrategy::with_priority(PRIO_HIGH), ) .await; if let Ok(SystemRpc::AdvertiseClusterLayout(layout)) = resp { @@ -681,6 +768,25 @@ fn get_default_ip() -> Option<IpAddr> { .map(|a| a.ip()) } +async fn resolve_peers(peers: &[String]) -> Vec<(NodeID, SocketAddr)> { + let mut ret = vec![]; + + for peer in peers.iter() { + match parse_and_resolve_peer_addr_async(peer).await { + Some((pubkey, addrs)) => { + for ip in addrs { + ret.push((pubkey, ip)); + } + } + None => { + warn!("Unable to parse and/or resolve peer hostname {}", peer); + } + } + } + + ret +} + struct ConsulDiscoveryParam { consul_host: String, service_name: String, |