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remove Ring and use ClusterLayout everywhere

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This commit is contained in:
Alex Auvolat 2023-11-08 15:41:24 +01:00
parent 0962313ebd
commit 12d1dbfc6b
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GPG Key ID: 0E496D15096376BE
17 changed files with 148 additions and 254 deletions
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4
src/api/admin/bucket.rs
View File

@ -122,7 +122,7 @@ async fn bucket_info_results(
.table .table
.get(&bucket_id, &EmptyKey) .get(&bucket_id, &EmptyKey)
.await? .await?
.map(|x| x.filtered_values(&garage.system.ring.borrow())) .map(|x| x.filtered_values(&garage.system.layout_watch.borrow()))
.unwrap_or_default(); .unwrap_or_default();
let mpu_counters = garage let mpu_counters = garage
@ -130,7 +130,7 @@ async fn bucket_info_results(
.table .table
.get(&bucket_id, &EmptyKey) .get(&bucket_id, &EmptyKey)
.await? .await?
.map(|x| x.filtered_values(&garage.system.ring.borrow())) .map(|x| x.filtered_values(&garage.system.layout_watch.borrow()))
.unwrap_or_default(); .unwrap_or_default();
let mut relevant_keys = HashMap::new(); let mut relevant_keys = HashMap::new();

8
src/api/k2v/index.rs
View File

@ -5,7 +5,7 @@ use serde::Serialize;
use garage_util::data::*; use garage_util::data::*;
use garage_rpc::ring::Ring; use garage_rpc::layout::ClusterLayout;
use garage_table::util::*; use garage_table::util::*;
use garage_model::garage::Garage; use garage_model::garage::Garage;
@ -26,7 +26,7 @@ pub async fn handle_read_index(
) -> Result<Response<Body>, Error> { ) -> Result<Response<Body>, Error> {
let reverse = reverse.unwrap_or(false); let reverse = reverse.unwrap_or(false);
let ring: Arc<Ring> = garage.system.ring.borrow().clone(); let layout: Arc<ClusterLayout> = garage.system.layout_watch.borrow().clone();
let (partition_keys, more, next_start) = read_range( let (partition_keys, more, next_start) = read_range(
&garage.k2v.counter_table.table, &garage.k2v.counter_table.table,
@ -35,7 +35,7 @@ pub async fn handle_read_index(
&start, &start,
&end, &end,
limit, limit,
Some((DeletedFilter::NotDeleted, ring.layout.node_id_vec.clone())), Some((DeletedFilter::NotDeleted, layout.node_id_vec.clone())),
EnumerationOrder::from_reverse(reverse), EnumerationOrder::from_reverse(reverse),
) )
.await?; .await?;
@ -54,7 +54,7 @@ pub async fn handle_read_index(
partition_keys: partition_keys partition_keys: partition_keys
.into_iter() .into_iter()
.map(|part| { .map(|part| {
let vals = part.filtered_values(&ring); let vals = part.filtered_values(&layout);
ReadIndexResponseEntry { ReadIndexResponseEntry {
pk: part.sk, pk: part.sk,
entries: *vals.get(&s_entries).unwrap_or(&0), entries: *vals.get(&s_entries).unwrap_or(&0),

2
src/api/s3/put.rs
View File

@ -253,7 +253,7 @@ pub(crate) async fn check_quotas(
.await?; .await?;
let counters = counters let counters = counters
.map(|x| x.filtered_values(&garage.system.ring.borrow())) .map(|x| x.filtered_values(&garage.system.layout_watch.borrow()))
.unwrap_or_default(); .unwrap_or_default();
let (prev_cnt_obj, prev_cnt_size) = match prev_object { let (prev_cnt_obj, prev_cnt_size) = match prev_object {

4
src/garage/admin/bucket.rs
View File

@ -70,7 +70,7 @@ impl AdminRpcHandler {
.table .table
.get(&bucket_id, &EmptyKey) .get(&bucket_id, &EmptyKey)
.await? .await?
.map(|x| x.filtered_values(&self.garage.system.ring.borrow())) .map(|x| x.filtered_values(&self.garage.system.layout_watch.borrow()))
.unwrap_or_default(); .unwrap_or_default();
let mpu_counters = self let mpu_counters = self
@ -79,7 +79,7 @@ impl AdminRpcHandler {
.table .table
.get(&bucket_id, &EmptyKey) .get(&bucket_id, &EmptyKey)
.await? .await?
.map(|x| x.filtered_values(&self.garage.system.ring.borrow())) .map(|x| x.filtered_values(&self.garage.system.layout_watch.borrow()))
.unwrap_or_default(); .unwrap_or_default();
let mut relevant_keys = HashMap::new(); let mut relevant_keys = HashMap::new();

20
src/garage/admin/mod.rs
View File

@ -18,7 +18,7 @@ use garage_util::error::Error as GarageError;
use garage_table::replication::*; use garage_table::replication::*;
use garage_table::*; use garage_table::*;
use garage_rpc::ring::PARTITION_BITS; use garage_rpc::layout::PARTITION_BITS;
use garage_rpc::*; use garage_rpc::*;
use garage_block::manager::BlockResyncErrorInfo; use garage_block::manager::BlockResyncErrorInfo;
@ -126,8 +126,8 @@ impl AdminRpcHandler {
opt_to_send.all_nodes = false; opt_to_send.all_nodes = false;
let mut failures = vec![]; let mut failures = vec![];
let ring = self.garage.system.ring.borrow().clone(); let layout = self.garage.system.layout_watch.borrow().clone();
for node in ring.layout.node_ids().iter() { for node in layout.node_ids().iter() {
let node = (*node).into(); let node = (*node).into();
let resp = self let resp = self
.endpoint .endpoint
@ -163,9 +163,9 @@ impl AdminRpcHandler {
async fn handle_stats(&self, opt: StatsOpt) -> Result<AdminRpc, Error> { async fn handle_stats(&self, opt: StatsOpt) -> Result<AdminRpc, Error> {
if opt.all_nodes { if opt.all_nodes {
let mut ret = String::new(); let mut ret = String::new();
let ring = self.garage.system.ring.borrow().clone(); let layout = self.garage.system.layout_watch.borrow().clone();
for node in ring.layout.node_ids().iter() { for node in layout.node_ids().iter() {
let mut opt = opt.clone(); let mut opt = opt.clone();
opt.all_nodes = false; opt.all_nodes = false;
opt.skip_global = true; opt.skip_global = true;
@ -275,7 +275,7 @@ impl AdminRpcHandler {
let mut ret = String::new(); let mut ret = String::new();
// Gather storage node and free space statistics // Gather storage node and free space statistics
let layout = &self.garage.system.ring.borrow().layout; let layout = &self.garage.system.layout_watch.borrow();
let mut node_partition_count = HashMap::<Uuid, u64>::new(); let mut node_partition_count = HashMap::<Uuid, u64>::new();
for short_id in layout.ring_assignment_data.iter() { for short_id in layout.ring_assignment_data.iter() {
let id = layout.node_id_vec[*short_id as usize]; let id = layout.node_id_vec[*short_id as usize];
@ -440,8 +440,8 @@ impl AdminRpcHandler {
) -> Result<AdminRpc, Error> { ) -> Result<AdminRpc, Error> {
if all_nodes { if all_nodes {
let mut ret = vec![]; let mut ret = vec![];
let ring = self.garage.system.ring.borrow().clone(); let layout = self.garage.system.layout_watch.borrow().clone();
for node in ring.layout.node_ids().iter() { for node in layout.node_ids().iter() {
let node = (*node).into(); let node = (*node).into();
match self match self
.endpoint .endpoint
@ -488,8 +488,8 @@ impl AdminRpcHandler {
) -> Result<AdminRpc, Error> { ) -> Result<AdminRpc, Error> {
if all_nodes { if all_nodes {
let mut ret = vec![]; let mut ret = vec![];
let ring = self.garage.system.ring.borrow().clone(); let layout = self.garage.system.layout_watch.borrow().clone();
for node in ring.layout.node_ids().iter() { for node in layout.node_ids().iter() {
let node = (*node).into(); let node = (*node).into();
match self match self
.endpoint .endpoint

6
src/model/helper/bucket.rs
View File

@ -450,10 +450,10 @@ impl<'a> BucketHelper<'a> {
#[cfg(feature = "k2v")] #[cfg(feature = "k2v")]
{ {
use garage_rpc::ring::Ring; use garage_rpc::layout::ClusterLayout;
use std::sync::Arc; use std::sync::Arc;
let ring: Arc<Ring> = self.0.system.ring.borrow().clone(); let layout: Arc<ClusterLayout> = self.0.system.layout_watch.borrow().clone();
let k2vindexes = self let k2vindexes = self
.0 .0
.k2v .k2v
@ -462,7 +462,7 @@ impl<'a> BucketHelper<'a> {
.get_range( .get_range(
&bucket_id, &bucket_id,
None, None,
Some((DeletedFilter::NotDeleted, ring.layout.node_id_vec.clone())), Some((DeletedFilter::NotDeleted, layout.node_id_vec.clone())),
10, 10,
EnumerationOrder::Forward, EnumerationOrder::Forward,
) )

6
src/model/index_counter.rs
View File

@ -7,7 +7,7 @@ use serde::{Deserialize, Serialize};
use garage_db as db; use garage_db as db;
use garage_rpc::ring::Ring; use garage_rpc::layout::ClusterLayout;
use garage_rpc::system::System; use garage_rpc::system::System;
use garage_util::background::BackgroundRunner; use garage_util::background::BackgroundRunner;
use garage_util::data::*; use garage_util::data::*;
@ -83,8 +83,8 @@ impl<T: CountedItem> Entry<T::CP, T::CS> for CounterEntry<T> {
} }
impl<T: CountedItem> CounterEntry<T> { impl<T: CountedItem> CounterEntry<T> {
pub fn filtered_values(&self, ring: &Ring) -> HashMap<String, i64> { pub fn filtered_values(&self, layout: &ClusterLayout) -> HashMap<String, i64> {
let nodes = &ring.layout.node_id_vec[..]; let nodes = &layout.node_id_vec[..];
self.filtered_values_with_nodes(nodes) self.filtered_values_with_nodes(nodes)
} }

72
src/rpc/layout.rs
View File

@ -13,17 +13,39 @@ use garage_util::error::*;
use crate::graph_algo::*; use crate::graph_algo::*;
use crate::ring::*;
use std::convert::TryInto; use std::convert::TryInto;
// ---- defines: partitions ----
/// A partition id, which is stored on 16 bits
/// i.e. we have up to 2**16 partitions.
/// (in practice we have exactly 2**PARTITION_BITS partitions)
pub type Partition = u16;
// TODO: make this constant parametrizable in the config file
// For deployments with many nodes it might make sense to bump
// it up to 10.
// Maximum value : 16
/// How many bits from the hash are used to make partitions. Higher numbers means more fairness in
/// presence of numerous nodes, but exponentially bigger ring. Max 16
pub const PARTITION_BITS: usize = 8;
const NB_PARTITIONS: usize = 1usize << PARTITION_BITS; const NB_PARTITIONS: usize = 1usize << PARTITION_BITS;
// ---- defines: nodes ----
// Type to store compactly the id of a node in the system
// Change this to u16 the day we want to have more than 256 nodes in a cluster
pub type CompactNodeType = u8;
pub const MAX_NODE_NUMBER: usize = 256;
// ---- defines: other ----
// The Message type will be used to collect information on the algorithm. // The Message type will be used to collect information on the algorithm.
type Message = Vec<String>; pub type Message = Vec<String>;
mod v08 { mod v08 {
use crate::ring::CompactNodeType; use super::CompactNodeType;
use garage_util::crdt::LwwMap; use garage_util::crdt::LwwMap;
use garage_util::data::{Hash, Uuid}; use garage_util::data::{Hash, Uuid};
use serde::{Deserialize, Serialize}; use serde::{Deserialize, Serialize};
@ -76,7 +98,7 @@ mod v08 {
mod v09 { mod v09 {
use super::v08; use super::v08;
use crate::ring::CompactNodeType; use super::CompactNodeType;
use garage_util::crdt::{Lww, LwwMap}; use garage_util::crdt::{Lww, LwwMap};
use garage_util::data::{Hash, Uuid}; use garage_util::data::{Hash, Uuid};
use serde::{Deserialize, Serialize}; use serde::{Deserialize, Serialize};
@ -334,6 +356,46 @@ impl ClusterLayout {
)) ))
} }
/// Get the partition in which data would fall on
pub fn partition_of(&self, position: &Hash) -> Partition {
let top = u16::from_be_bytes(position.as_slice()[0..2].try_into().unwrap());
top >> (16 - PARTITION_BITS)
}
/// Get the list of partitions and the first hash of a partition key that would fall in it
pub fn partitions(&self) -> Vec<(Partition, Hash)> {
(0..(1 << PARTITION_BITS))
.map(|i| {
let top = (i as u16) << (16 - PARTITION_BITS);
let mut location = [0u8; 32];
location[..2].copy_from_slice(&u16::to_be_bytes(top)[..]);
(i as u16, Hash::from(location))
})
.collect::<Vec<_>>()
}
/// Walk the ring to find the n servers in which data should be replicated
pub fn nodes_of(&self, position: &Hash, n: usize) -> Vec<Uuid> {
assert_eq!(n, self.replication_factor);
let data = &self.ring_assignment_data;
if data.len() != self.replication_factor * (1 << PARTITION_BITS) {
warn!("Ring not yet ready, read/writes will be lost!");
return vec![];
}
let partition_idx = self.partition_of(position) as usize;
let partition_start = partition_idx * self.replication_factor;
let partition_end = (partition_idx + 1) * self.replication_factor;
let partition_nodes = &data[partition_start..partition_end];
partition_nodes
.iter()
.map(|i| self.node_id_vec[*i as usize])
.collect::<Vec<_>>()
}
// ===================== internal information extractors ====================== // ===================== internal information extractors ======================
/// Returns the uuids of the non_gateway nodes in self.node_id_vec. /// Returns the uuids of the non_gateway nodes in self.node_id_vec.

1
src/rpc/lib.rs
View File

@ -14,7 +14,6 @@ mod kubernetes;
pub mod graph_algo; pub mod graph_algo;
pub mod layout; pub mod layout;
pub mod replication_mode; pub mod replication_mode;
pub mod ring;
pub mod system; pub mod system;
pub mod rpc_helper; pub mod rpc_helper;

164
src/rpc/ring.rs
View File

@ -1,164 +0,0 @@
//! Module containing types related to computing nodes which should receive a copy of data blocks
//! and metadata
use std::convert::TryInto;
use garage_util::data::*;
use crate::layout::ClusterLayout;
/// A partition id, which is stored on 16 bits
/// i.e. we have up to 2**16 partitions.
/// (in practice we have exactly 2**PARTITION_BITS partitions)
pub type Partition = u16;
// TODO: make this constant parametrizable in the config file
// For deployments with many nodes it might make sense to bump
// it up to 10.
// Maximum value : 16
/// How many bits from the hash are used to make partitions. Higher numbers means more fairness in
/// presence of numerous nodes, but exponentially bigger ring. Max 16
pub const PARTITION_BITS: usize = 8;
const PARTITION_MASK_U16: u16 = ((1 << PARTITION_BITS) - 1) << (16 - PARTITION_BITS);
/// A ring distributing fairly objects to nodes
#[derive(Clone)]
pub struct Ring {
/// The replication factor for this ring
pub replication_factor: usize,
/// The network configuration used to generate this ring
pub layout: ClusterLayout,
// Internal order of nodes used to make a more compact representation of the ring
nodes: Vec<Uuid>,
// The list of entries in the ring
ring: Vec<RingEntry>,
}
// Type to store compactly the id of a node in the system
// Change this to u16 the day we want to have more than 256 nodes in a cluster
pub type CompactNodeType = u8;
pub const MAX_NODE_NUMBER: usize = 256;
// The maximum number of times an object might get replicated
// This must be at least 3 because Garage supports 3-way replication
// Here we use 6 so that the size of a ring entry is 8 bytes
// (2 bytes partition id, 6 bytes node numbers as u8s)
const MAX_REPLICATION: usize = 6;
/// An entry in the ring
#[derive(Clone, Debug)]
struct RingEntry {
// The two first bytes of the first hash that goes in this partition
// (the next bytes are zeroes)
hash_prefix: u16,
// The nodes that store this partition, stored as a list of positions in the `nodes`
// field of the Ring structure
// Only items 0 up to ring.replication_factor - 1 are used, others are zeros
nodes_buf: [CompactNodeType; MAX_REPLICATION],
}
impl Ring {
pub(crate) fn new(layout: ClusterLayout, replication_factor: usize) -> Self {
if replication_factor != layout.replication_factor {
warn!("Could not build ring: replication factor does not match between local configuration and network role assignment.");
return Self::empty(layout, replication_factor);
}
if layout.ring_assignment_data.len() != replication_factor * (1 << PARTITION_BITS) {
warn!("Could not build ring: network role assignment data has invalid length");
return Self::empty(layout, replication_factor);
}
let nodes = layout.node_id_vec.clone();
let ring = (0..(1 << PARTITION_BITS))
.map(|i| {
let top = (i as u16) << (16 - PARTITION_BITS);
let mut nodes_buf = [0u8; MAX_REPLICATION];
nodes_buf[..replication_factor].copy_from_slice(
&layout.ring_assignment_data
[replication_factor * i..replication_factor * (i + 1)],
);
RingEntry {
hash_prefix: top,
nodes_buf,
}
})
.collect::<Vec<_>>();
Self {
replication_factor,
layout,
nodes,
ring,
}
}
fn empty(layout: ClusterLayout, replication_factor: usize) -> Self {
Self {
replication_factor,
layout,
nodes: vec![],
ring: vec![],
}
}
/// Get the partition in which data would fall on
pub fn partition_of(&self, position: &Hash) -> Partition {
let top = u16::from_be_bytes(position.as_slice()[0..2].try_into().unwrap());
top >> (16 - PARTITION_BITS)
}
/// Get the list of partitions and the first hash of a partition key that would fall in it
pub fn partitions(&self) -> Vec<(Partition, Hash)> {
let mut ret = vec![];
for (i, entry) in self.ring.iter().enumerate() {
let mut location = [0u8; 32];
location[..2].copy_from_slice(&u16::to_be_bytes(entry.hash_prefix)[..]);
ret.push((i as u16, location.into()));
}
if !ret.is_empty() {
assert_eq!(ret[0].1, [0u8; 32].into());
}
ret
}
/// Walk the ring to find the n servers in which data should be replicated
pub fn get_nodes(&self, position: &Hash, n: usize) -> Vec<Uuid> {
if self.ring.len() != 1 << PARTITION_BITS {
warn!("Ring not yet ready, read/writes will be lost!");
return vec![];
}
let partition_idx = self.partition_of(position) as usize;
let partition = &self.ring[partition_idx];
let top = u16::from_be_bytes(position.as_slice()[0..2].try_into().unwrap());
// Check that we haven't messed up our partition table, i.e. that this partition
// table entrey indeed corresponds to the item we are storing
assert_eq!(
partition.hash_prefix & PARTITION_MASK_U16,
top & PARTITION_MASK_U16
);
assert!(n <= self.replication_factor);
partition.nodes_buf[..n]
.iter()
.map(|i| self.nodes[*i as usize])
.collect::<Vec<_>>()
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_ring_entry_size() {
assert_eq!(std::mem::size_of::<RingEntry>(), 8);
}
}

14
src/rpc/rpc_helper.rs
View File

@ -26,8 +26,8 @@ use garage_util::data::*;
use garage_util::error::Error; use garage_util::error::Error;
use garage_util::metrics::RecordDuration; use garage_util::metrics::RecordDuration;
use crate::layout::ClusterLayout;
use crate::metrics::RpcMetrics; use crate::metrics::RpcMetrics;
use crate::ring::Ring;
// Default RPC timeout = 5 minutes // Default RPC timeout = 5 minutes
const DEFAULT_TIMEOUT: Duration = Duration::from_secs(300); const DEFAULT_TIMEOUT: Duration = Duration::from_secs(300);
@ -91,7 +91,7 @@ pub struct RpcHelper(Arc<RpcHelperInner>);
struct RpcHelperInner { struct RpcHelperInner {
our_node_id: Uuid, our_node_id: Uuid,
fullmesh: Arc<FullMeshPeeringStrategy>, fullmesh: Arc<FullMeshPeeringStrategy>,
ring: watch::Receiver<Arc<Ring>>, layout_watch: watch::Receiver<Arc<ClusterLayout>>,
metrics: RpcMetrics, metrics: RpcMetrics,
rpc_timeout: Duration, rpc_timeout: Duration,
} }
@ -100,7 +100,7 @@ impl RpcHelper {
pub(crate) fn new( pub(crate) fn new(
our_node_id: Uuid, our_node_id: Uuid,
fullmesh: Arc<FullMeshPeeringStrategy>, fullmesh: Arc<FullMeshPeeringStrategy>,
ring: watch::Receiver<Arc<Ring>>, layout_watch: watch::Receiver<Arc<ClusterLayout>>,
rpc_timeout: Option<Duration>, rpc_timeout: Option<Duration>,
) -> Self { ) -> Self {
let metrics = RpcMetrics::new(); let metrics = RpcMetrics::new();
@ -108,7 +108,7 @@ impl RpcHelper {
Self(Arc::new(RpcHelperInner { Self(Arc::new(RpcHelperInner {
our_node_id, our_node_id,
fullmesh, fullmesh,
ring, layout_watch,
metrics, metrics,
rpc_timeout: rpc_timeout.unwrap_or(DEFAULT_TIMEOUT), rpc_timeout: rpc_timeout.unwrap_or(DEFAULT_TIMEOUT),
})) }))
@ -392,8 +392,8 @@ impl RpcHelper {
pub fn request_order(&self, nodes: &[Uuid]) -> Vec<Uuid> { pub fn request_order(&self, nodes: &[Uuid]) -> Vec<Uuid> {
// Retrieve some status variables that we will use to sort requests // Retrieve some status variables that we will use to sort requests
let peer_list = self.0.fullmesh.get_peer_list(); let peer_list = self.0.fullmesh.get_peer_list();
let ring: Arc<Ring> = self.0.ring.borrow().clone(); let layout: Arc<ClusterLayout> = self.0.layout_watch.borrow().clone();
let our_zone = match ring.layout.node_role(&self.0.our_node_id) { let our_zone = match layout.node_role(&self.0.our_node_id) {
Some(pc) => &pc.zone, Some(pc) => &pc.zone,
None => "", None => "",
}; };
@ -407,7 +407,7 @@ impl RpcHelper {
let mut nodes = nodes let mut nodes = nodes
.iter() .iter()
.map(|to| { .map(|to| {
let peer_zone = match ring.layout.node_role(to) { let peer_zone = match layout.node_role(to) {
Some(pc) => &pc.zone, Some(pc) => &pc.zone,
None => "", None => "",
}; };

55
src/rpc/system.rs
View File

@ -36,7 +36,6 @@ use crate::consul::ConsulDiscovery;
use crate::kubernetes::*; use crate::kubernetes::*;
use crate::layout::*; use crate::layout::*;
use crate::replication_mode::*; use crate::replication_mode::*;
use crate::ring::*;
use crate::rpc_helper::*; use crate::rpc_helper::*;
use crate::system_metrics::*; use crate::system_metrics::*;
@ -112,9 +111,9 @@ pub struct System {
replication_mode: ReplicationMode, replication_mode: ReplicationMode,
replication_factor: usize, replication_factor: usize,
/// The ring /// The layout
pub ring: watch::Receiver<Arc<Ring>>, pub layout_watch: watch::Receiver<Arc<ClusterLayout>>,
update_ring: Mutex<watch::Sender<Arc<Ring>>>, update_layout: Mutex<watch::Sender<Arc<ClusterLayout>>>,
/// Path to metadata directory /// Path to metadata directory
pub metadata_dir: PathBuf, pub metadata_dir: PathBuf,
@ -286,8 +285,7 @@ impl System {
let mut local_status = NodeStatus::initial(replication_factor, &cluster_layout); let mut local_status = NodeStatus::initial(replication_factor, &cluster_layout);
local_status.update_disk_usage(&config.metadata_dir, &config.data_dir, &metrics); local_status.update_disk_usage(&config.metadata_dir, &config.data_dir, &metrics);
let ring = Ring::new(cluster_layout, replication_factor); let (update_layout, layout_watch) = watch::channel(Arc::new(cluster_layout));
let (update_ring, ring) = watch::channel(Arc::new(ring));
let rpc_public_addr = match &config.rpc_public_addr { let rpc_public_addr = match &config.rpc_public_addr {
Some(a_str) => { Some(a_str) => {
@ -362,7 +360,7 @@ impl System {
rpc: RpcHelper::new( rpc: RpcHelper::new(
netapp.id.into(), netapp.id.into(),
fullmesh, fullmesh,
ring.clone(), layout_watch.clone(),
config.rpc_timeout_msec.map(Duration::from_millis), config.rpc_timeout_msec.map(Duration::from_millis),
), ),
system_endpoint, system_endpoint,
@ -378,8 +376,8 @@ impl System {
kubernetes_discovery: config.kubernetes_discovery.clone(), kubernetes_discovery: config.kubernetes_discovery.clone(),
metrics, metrics,
ring, layout_watch,
update_ring: Mutex::new(update_ring), update_layout: Mutex::new(update_layout),
metadata_dir: config.metadata_dir.clone(), metadata_dir: config.metadata_dir.clone(),
data_dir: config.data_dir.clone(), data_dir: config.data_dir.clone(),
}); });
@ -426,7 +424,7 @@ impl System {
} }
pub fn get_cluster_layout(&self) -> ClusterLayout { pub fn get_cluster_layout(&self) -> ClusterLayout {
self.ring.borrow().layout.clone() self.layout_watch.borrow().as_ref().clone()
} }
pub async fn update_cluster_layout( pub async fn update_cluster_layout(
@ -466,7 +464,7 @@ impl System {
} }
pub fn health(&self) -> ClusterHealth { pub fn health(&self) -> ClusterHealth {
let ring: Arc<_> = self.ring.borrow().clone(); let layout: Arc<_> = self.layout_watch.borrow().clone();
let quorum = self.replication_mode.write_quorum(); let quorum = self.replication_mode.write_quorum();
let replication_factor = self.replication_factor; let replication_factor = self.replication_factor;
@ -477,8 +475,7 @@ impl System {
.collect::<HashMap<Uuid, _>>(); .collect::<HashMap<Uuid, _>>();
let connected_nodes = nodes.iter().filter(|(_, n)| n.is_up).count(); let connected_nodes = nodes.iter().filter(|(_, n)| n.is_up).count();
let storage_nodes = ring let storage_nodes = layout
.layout
.roles .roles
.items() .items()
.iter() .iter()
@ -489,11 +486,11 @@ impl System {
.filter(|(x, _, _)| nodes.get(x).map(|n| n.is_up).unwrap_or(false)) .filter(|(x, _, _)| nodes.get(x).map(|n| n.is_up).unwrap_or(false))
.count(); .count();
let partitions = ring.partitions(); let partitions = layout.partitions();
let partitions_n_up = partitions let partitions_n_up = partitions
.iter() .iter()
.map(|(_, h)| { .map(|(_, h)| {
let pn = ring.get_nodes(h, ring.replication_factor); let pn = layout.nodes_of(h, layout.replication_factor);
pn.iter() pn.iter()
.filter(|x| nodes.get(x).map(|n| n.is_up).unwrap_or(false)) .filter(|x| nodes.get(x).map(|n| n.is_up).unwrap_or(false))
.count() .count()
@ -584,9 +581,9 @@ impl System {
/// Save network configuration to disc /// Save network configuration to disc
async fn save_cluster_layout(&self) -> Result<(), Error> { async fn save_cluster_layout(&self) -> Result<(), Error> {
let ring: Arc<Ring> = self.ring.borrow().clone(); let layout: Arc<ClusterLayout> = self.layout_watch.borrow().clone();
self.persist_cluster_layout self.persist_cluster_layout
.save_async(&ring.layout) .save_async(&layout)
.await .await
.expect("Cannot save current cluster layout"); .expect("Cannot save current cluster layout");
Ok(()) Ok(())
@ -595,9 +592,9 @@ impl System {
fn update_local_status(&self) { fn update_local_status(&self) {
let mut new_si: NodeStatus = self.local_status.load().as_ref().clone(); let mut new_si: NodeStatus = self.local_status.load().as_ref().clone();
let ring = self.ring.borrow(); let layout = self.layout_watch.borrow();
new_si.cluster_layout_version = ring.layout.version; new_si.cluster_layout_version = layout.version;
new_si.cluster_layout_staging_hash = ring.layout.staging_hash; new_si.cluster_layout_staging_hash = layout.staging_hash;
new_si.update_disk_usage(&self.metadata_dir, &self.data_dir, &self.metrics); new_si.update_disk_usage(&self.metadata_dir, &self.data_dir, &self.metrics);
@ -612,8 +609,8 @@ impl System {
} }
fn handle_pull_cluster_layout(&self) -> SystemRpc { fn handle_pull_cluster_layout(&self) -> SystemRpc {
let ring = self.ring.borrow().clone(); let layout = self.layout_watch.borrow().as_ref().clone();
SystemRpc::AdvertiseClusterLayout(ring.layout.clone()) SystemRpc::AdvertiseClusterLayout(layout)
} }
fn handle_get_known_nodes(&self) -> SystemRpc { fn handle_get_known_nodes(&self) -> SystemRpc {
@ -663,8 +660,9 @@ impl System {
return Err(Error::Message(msg)); return Err(Error::Message(msg));
} }
let update_ring = self.update_ring.lock().await; let update_layout = self.update_layout.lock().await;
let mut layout: ClusterLayout = self.ring.borrow().layout.clone(); // TODO: don't clone each time an AdvertiseClusterLayout is received
let mut layout: ClusterLayout = self.layout_watch.borrow().as_ref().clone();
let prev_layout_check = layout.check().is_ok(); let prev_layout_check = layout.check().is_ok();
if layout.merge(adv) { if layout.merge(adv) {
@ -675,9 +673,8 @@ impl System {
)); ));
} }
let ring = Ring::new(layout.clone(), self.replication_factor); update_layout.send(Arc::new(layout.clone()))?;
update_ring.send(Arc::new(ring))?; drop(update_layout);
drop(update_ring);
let self2 = self.clone(); let self2 = self.clone();
tokio::spawn(async move { tokio::spawn(async move {
@ -725,9 +722,9 @@ impl System {
async fn discovery_loop(self: &Arc<Self>, mut stop_signal: watch::Receiver<bool>) { async fn discovery_loop(self: &Arc<Self>, mut stop_signal: watch::Receiver<bool>) {
while !*stop_signal.borrow() { while !*stop_signal.borrow() {
let not_configured = self.ring.borrow().layout.check().is_err(); let not_configured = self.layout_watch.borrow().check().is_err();
let no_peers = self.fullmesh.get_peer_list().len() < self.replication_factor; let no_peers = self.fullmesh.get_peer_list().len() < self.replication_factor;
let expected_n_nodes = self.ring.borrow().layout.num_nodes(); let expected_n_nodes = self.layout_watch.borrow().num_nodes();
let bad_peers = self let bad_peers = self
.fullmesh .fullmesh
.get_peer_list() .get_peer_list()

2
src/table/merkle.rs
View File

@ -13,7 +13,7 @@ use garage_util::data::*;
use garage_util::encode::{nonversioned_decode, nonversioned_encode}; use garage_util::encode::{nonversioned_decode, nonversioned_encode};
use garage_util::error::Error; use garage_util::error::Error;
use garage_rpc::ring::*; use garage_rpc::layout::*;
use crate::data::*; use crate::data::*;
use crate::replication::*; use crate::replication::*;

8
src/table/replication/fullcopy.rs
View File

@ -1,6 +1,6 @@
use std::sync::Arc; use std::sync::Arc;
use garage_rpc::ring::*; use garage_rpc::layout::*;
use garage_rpc::system::System; use garage_rpc::system::System;
use garage_util::data::*; use garage_util::data::*;
@ -27,11 +27,11 @@ impl TableReplication for TableFullReplication {
} }
fn write_nodes(&self, _hash: &Hash) -> Vec<Uuid> { fn write_nodes(&self, _hash: &Hash) -> Vec<Uuid> {
let ring = self.system.ring.borrow(); let layout = self.system.layout_watch.borrow();
ring.layout.node_ids().to_vec() layout.node_ids().to_vec()
} }
fn write_quorum(&self) -> usize { fn write_quorum(&self) -> usize {
let nmembers = self.system.ring.borrow().layout.node_ids().len(); let nmembers = self.system.layout_watch.borrow().node_ids().len();
if nmembers > self.max_faults { if nmembers > self.max_faults {
nmembers - self.max_faults nmembers - self.max_faults
} else { } else {

2
src/table/replication/parameters.rs
View File

@ -1,4 +1,4 @@
use garage_rpc::ring::*; use garage_rpc::layout::*;
use garage_util::data::*; use garage_util::data::*;
/// Trait to describe how a table shall be replicated /// Trait to describe how a table shall be replicated

14
src/table/replication/sharded.rs
View File

@ -1,6 +1,6 @@
use std::sync::Arc; use std::sync::Arc;
use garage_rpc::ring::*; use garage_rpc::layout::*;
use garage_rpc::system::System; use garage_rpc::system::System;
use garage_util::data::*; use garage_util::data::*;
@ -26,16 +26,16 @@ pub struct TableShardedReplication {
impl TableReplication for TableShardedReplication { impl TableReplication for TableShardedReplication {
fn read_nodes(&self, hash: &Hash) -> Vec<Uuid> { fn read_nodes(&self, hash: &Hash) -> Vec<Uuid> {
let ring = self.system.ring.borrow(); let layout = self.system.layout_watch.borrow();
ring.get_nodes(hash, self.replication_factor) layout.nodes_of(hash, self.replication_factor)
} }
fn read_quorum(&self) -> usize { fn read_quorum(&self) -> usize {
self.read_quorum self.read_quorum
} }
fn write_nodes(&self, hash: &Hash) -> Vec<Uuid> { fn write_nodes(&self, hash: &Hash) -> Vec<Uuid> {
let ring = self.system.ring.borrow(); let layout = self.system.layout_watch.borrow();
ring.get_nodes(hash, self.replication_factor) layout.nodes_of(hash, self.replication_factor)
} }
fn write_quorum(&self) -> usize { fn write_quorum(&self) -> usize {
self.write_quorum self.write_quorum
@ -45,9 +45,9 @@ impl TableReplication for TableShardedReplication {
} }
fn partition_of(&self, hash: &Hash) -> Partition { fn partition_of(&self, hash: &Hash) -> Partition {
self.system.ring.borrow().partition_of(hash) self.system.layout_watch.borrow().partition_of(hash)
} }
fn partitions(&self) -> Vec<(Partition, Hash)> { fn partitions(&self) -> Vec<(Partition, Hash)> {
self.system.ring.borrow().partitions() self.system.layout_watch.borrow().partitions()
} }
} }

20
src/table/sync.rs
View File

@ -17,7 +17,7 @@ use garage_util::data::*;
use garage_util::encode::{debug_serialize, nonversioned_encode}; use garage_util::encode::{debug_serialize, nonversioned_encode};
use garage_util::error::{Error, OkOrMessage}; use garage_util::error::{Error, OkOrMessage};
use garage_rpc::ring::*; use garage_rpc::layout::*;
use garage_rpc::system::System; use garage_rpc::system::System;
use garage_rpc::*; use garage_rpc::*;
@ -91,8 +91,8 @@ impl<F: TableSchema, R: TableReplication> TableSyncer<F, R> {
bg.spawn_worker(SyncWorker { bg.spawn_worker(SyncWorker {
syncer: self.clone(), syncer: self.clone(),
ring_recv: self.system.ring.clone(), layout_watch: self.system.layout_watch.clone(),
ring: self.system.ring.borrow().clone(), layout: self.system.layout_watch.borrow().clone(),
add_full_sync_rx, add_full_sync_rx,
todo: vec![], todo: vec![],
next_full_sync: Instant::now() + Duration::from_secs(20), next_full_sync: Instant::now() + Duration::from_secs(20),
@ -492,8 +492,8 @@ impl<F: TableSchema, R: TableReplication> EndpointHandler<SyncRpc> for TableSync
struct SyncWorker<F: TableSchema, R: TableReplication> { struct SyncWorker<F: TableSchema, R: TableReplication> {
syncer: Arc<TableSyncer<F, R>>, syncer: Arc<TableSyncer<F, R>>,
ring_recv: watch::Receiver<Arc<Ring>>, layout_watch: watch::Receiver<Arc<ClusterLayout>>,
ring: Arc<Ring>, layout: Arc<ClusterLayout>,
add_full_sync_rx: mpsc::UnboundedReceiver<()>, add_full_sync_rx: mpsc::UnboundedReceiver<()>,
todo: Vec<TodoPartition>, todo: Vec<TodoPartition>,
next_full_sync: Instant, next_full_sync: Instant,
@ -593,11 +593,11 @@ impl<F: TableSchema, R: TableReplication> Worker for SyncWorker<F, R> {
self.add_full_sync(); self.add_full_sync();
} }
}, },
_ = self.ring_recv.changed() => { _ = self.layout_watch.changed() => {
let new_ring = self.ring_recv.borrow(); let new_layout = self.layout_watch.borrow();
if !Arc::ptr_eq(&new_ring, &self.ring) { if !Arc::ptr_eq(&new_layout, &self.layout) {
self.ring = new_ring.clone(); self.layout = new_layout.clone();
drop(new_ring); drop(new_layout);
debug!("({}) Ring changed, adding full sync to syncer todo list", F::TABLE_NAME); debug!("({}) Ring changed, adding full sync to syncer todo list", F::TABLE_NAME);
self.add_full_sync(); self.add_full_sync();
} }