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-rw-r--r--src/rpc/Cargo.toml1
-rw-r--r--src/rpc/graph_algo.rs34
-rw-r--r--src/rpc/layout.rs62
3 files changed, 50 insertions, 47 deletions
diff --git a/src/rpc/Cargo.toml b/src/rpc/Cargo.toml
index 5a427131..1b411c6a 100644
--- a/src/rpc/Cargo.toml
+++ b/src/rpc/Cargo.toml
@@ -18,6 +18,7 @@ garage_util = { version = "0.8.0", path = "../util" }
arc-swap = "1.0"
bytes = "1.0"
+bytesize = "1.1"
gethostname = "0.2"
hex = "0.4"
tracing = "0.1.30"
diff --git a/src/rpc/graph_algo.rs b/src/rpc/graph_algo.rs
index 1e4a819b..f181e2ba 100644
--- a/src/rpc/graph_algo.rs
+++ b/src/rpc/graph_algo.rs
@@ -23,8 +23,8 @@ pub enum Vertex {
/// Edge data structure for the flow algorithm.
#[derive(Clone, Copy, Debug)]
pub struct FlowEdge {
- cap: u32, // flow maximal capacity of the edge
- flow: i32, // flow value on the edge
+ cap: u64, // flow maximal capacity of the edge
+ flow: i64, // flow value on the edge
dest: usize, // destination vertex id
rev: usize, // index of the reversed edge (v, self) in the edge list of vertex v
}
@@ -32,7 +32,7 @@ pub struct FlowEdge {
/// Edge data structure for the detection of negative cycles.
#[derive(Clone, Copy, Debug)]
pub struct WeightedEdge {
- w: i32, // weight of the edge
+ w: i64, // weight of the edge
dest: usize,
}
@@ -51,7 +51,7 @@ pub struct Graph<E: Edge> {
graph: Vec<Vec<E>>,
}
-pub type CostFunction = HashMap<(Vertex, Vertex), i32>;
+pub type CostFunction = HashMap<(Vertex, Vertex), i64>;
impl<E: Edge> Graph<E> {
pub fn new(vertices: &[Vertex]) -> Self {
@@ -77,7 +77,7 @@ impl<E: Edge> Graph<E> {
impl Graph<FlowEdge> {
/// This function adds a directed edge to the graph with capacity c, and the
/// corresponding reversed edge with capacity 0.
- pub fn add_edge(&mut self, u: Vertex, v: Vertex, c: u32) -> Result<(), String> {
+ pub fn add_edge(&mut self, u: Vertex, v: Vertex, c: u64) -> Result<(), String> {
let idu = self.get_vertex_id(&u)?;
let idv = self.get_vertex_id(&v)?;
if idu == idv {
@@ -115,7 +115,7 @@ impl Graph<FlowEdge> {
}
/// This function returns the value of the flow incoming to v.
- pub fn get_inflow(&self, v: Vertex) -> Result<i32, String> {
+ pub fn get_inflow(&self, v: Vertex) -> Result<i64, String> {
let idv = self.get_vertex_id(&v)?;
let mut result = 0;
for edge in self.graph[idv].iter() {
@@ -125,7 +125,7 @@ impl Graph<FlowEdge> {
}
/// This function returns the value of the flow outgoing from v.
- pub fn get_outflow(&self, v: Vertex) -> Result<i32, String> {
+ pub fn get_outflow(&self, v: Vertex) -> Result<i64, String> {
let idv = self.get_vertex_id(&v)?;
let mut result = 0;
for edge in self.graph[idv].iter() {
@@ -136,7 +136,7 @@ impl Graph<FlowEdge> {
/// This function computes the flow total value by computing the outgoing flow
/// from the source.
- pub fn get_flow_value(&mut self) -> Result<i32, String> {
+ pub fn get_flow_value(&mut self) -> Result<i64, String> {
self.get_outflow(Vertex::Source)
}
@@ -156,7 +156,7 @@ impl Graph<FlowEdge> {
}
/// Computes an upper bound of the flow on the graph
- pub fn flow_upper_bound(&self) -> Result<u32, String> {
+ pub fn flow_upper_bound(&self) -> Result<u64, String> {
let idsource = self.get_vertex_id(&Vertex::Source)?;
let mut flow_upper_bound = 0;
for edge in self.graph[idsource].iter() {
@@ -193,7 +193,7 @@ impl Graph<FlowEdge> {
// it means id has not yet been reached
level[id] = Some(lvl);
for edge in self.graph[id].iter() {
- if edge.cap as i32 - edge.flow > 0 {
+ if edge.cap as i64 - edge.flow > 0 {
fifo.push_back((edge.dest, lvl + 1));
}
}
@@ -216,10 +216,10 @@ impl Graph<FlowEdge> {
lifo.pop();
while let Some((id, _)) = lifo.pop() {
let nbd = next_nbd[id];
- self.graph[id][nbd].flow += f as i32;
+ self.graph[id][nbd].flow += f as i64;
let id_rev = self.graph[id][nbd].dest;
let nbd_rev = self.graph[id][nbd].rev;
- self.graph[id_rev][nbd_rev].flow -= f as i32;
+ self.graph[id_rev][nbd_rev].flow -= f as i64;
}
lifo.push((idsource, flow_upper_bound));
continue;
@@ -236,9 +236,9 @@ impl Graph<FlowEdge> {
}
// else we can try to send flow from id to its nbd
let new_flow = min(
- f as i32,
- self.graph[id][nbd].cap as i32 - self.graph[id][nbd].flow,
- ) as u32;
+ f as i64,
+ self.graph[id][nbd].cap as i64 - self.graph[id][nbd].flow,
+ ) as u64;
if new_flow == 0 {
next_nbd[id] += 1;
continue;
@@ -302,7 +302,7 @@ impl Graph<FlowEdge> {
let nb_vertices = self.id_to_vertex.len();
for i in 0..nb_vertices {
for edge in self.graph[i].iter() {
- if edge.cap as i32 - edge.flow > 0 {
+ if edge.cap as i64 - edge.flow > 0 {
// It is possible to send overflow through this edge
let u = self.id_to_vertex[i];
let v = self.id_to_vertex[edge.dest];
@@ -322,7 +322,7 @@ impl Graph<FlowEdge> {
impl Graph<WeightedEdge> {
/// This function adds a single directed weighted edge to the graph.
- pub fn add_edge(&mut self, u: Vertex, v: Vertex, w: i32) -> Result<(), String> {
+ pub fn add_edge(&mut self, u: Vertex, v: Vertex, w: i64) -> Result<(), String> {
let idu = self.get_vertex_id(&u)?;
let idv = self.get_vertex_id(&v)?;
self.graph[idu].push(WeightedEdge { w, dest: idv });
diff --git a/src/rpc/layout.rs b/src/rpc/layout.rs
index 15765662..3c80b213 100644
--- a/src/rpc/layout.rs
+++ b/src/rpc/layout.rs
@@ -2,7 +2,7 @@ use std::cmp::Ordering;
use std::collections::HashMap;
use std::collections::HashSet;
-use hex::ToHex;
+use bytesize::ByteSize;
use itertools::Itertools;
use serde::{Deserialize, Serialize};
@@ -32,7 +32,7 @@ pub struct ClusterLayout {
/// This attribute is only used to retain the previously computed partition size,
/// to know to what extent does it change with the layout update.
- pub partition_size: u32,
+ pub partition_size: u64,
/// Parameters used to compute the assignation currently given by
/// ring_assignation_data
pub parameters: LayoutParameters,
@@ -86,8 +86,7 @@ pub struct NodeRole {
/// The capacity of the node
/// If this is set to None, the node does not participate in storing data for the system
/// and is only active as an API gateway to other nodes
- // TODO : change the capacity to u64 and use byte unit input/output
- pub capacity: Option<u32>,
+ pub capacity: Option<u64>,
/// A set of tags to recognize the node
pub tags: Vec<String>,
}
@@ -95,7 +94,7 @@ pub struct NodeRole {
impl NodeRole {
pub fn capacity_string(&self) -> String {
match self.capacity {
- Some(c) => format!("{}", c),
+ Some(c) => ByteSize::b(c).to_string_as(false),
None => "gateway".to_string(),
}
}
@@ -264,7 +263,7 @@ To know the correct value of the new layout version, invoke `garage layout show`
}
/// Given a node uuids, this function returns its capacity or fails if it does not have any
- pub fn get_node_capacity(&self, uuid: &Uuid) -> Result<u32, Error> {
+ pub fn get_node_capacity(&self, uuid: &Uuid) -> Result<u64, Error> {
match self.node_role(uuid) {
Some(NodeRole {
capacity: Some(cap),
@@ -300,7 +299,7 @@ To know the correct value of the new layout version, invoke `garage layout show`
}
/// Returns the sum of capacities of non gateway nodes in the cluster
- pub fn get_total_capacity(&self) -> Result<u32, Error> {
+ pub fn get_total_capacity(&self) -> Result<u64, Error> {
let mut total_capacity = 0;
for uuid in self.nongateway_nodes().iter() {
total_capacity += self.get_node_capacity(uuid)?;
@@ -458,13 +457,14 @@ impl ClusterLayout {
if old_assignation_opt != None {
msg.push(format!(
"Optimal size of a partition: {} (was {} in the previous layout).",
- partition_size, self.partition_size
+ ByteSize::b(partition_size).to_string_as(false),
+ ByteSize::b(self.partition_size).to_string_as(false)
));
} else {
msg.push(format!(
"Given the replication and redundancy constraints, the \
optimal size of a partition is {}.",
- partition_size
+ ByteSize::b(partition_size).to_string_as(false)
));
}
// We write the partition size.
@@ -613,7 +613,7 @@ impl ClusterLayout {
fn compute_optimal_partition_size(
&self,
zone_to_id: &HashMap<String, usize>,
- ) -> Result<u32, Error> {
+ ) -> Result<u64, Error> {
let empty_set = HashSet::<(usize, usize)>::new();
let mut g = self.generate_flow_graph(1, zone_to_id, &empty_set)?;
g.compute_maximal_flow()?;
@@ -672,7 +672,7 @@ impl ClusterLayout {
/// previous one.
fn generate_flow_graph(
&self,
- partition_size: u32,
+ partition_size: u64,
zone_to_id: &HashMap<String, usize>,
exclude_assoc: &HashSet<(usize, usize)>,
) -> Result<Graph<FlowEdge>, Error> {
@@ -682,18 +682,18 @@ impl ClusterLayout {
let nb_zones = zone_to_id.len();
let redundancy = self.parameters.zone_redundancy;
for p in 0..NB_PARTITIONS {
- g.add_edge(Vertex::Source, Vertex::Pup(p), redundancy as u32)?;
+ g.add_edge(Vertex::Source, Vertex::Pup(p), redundancy as u64)?;
g.add_edge(
Vertex::Source,
Vertex::Pdown(p),
- (self.replication_factor - redundancy) as u32,
+ (self.replication_factor - redundancy) as u64,
)?;
for z in 0..nb_zones {
g.add_edge(Vertex::Pup(p), Vertex::PZ(p, z), 1)?;
g.add_edge(
Vertex::Pdown(p),
Vertex::PZ(p, z),
- self.replication_factor as u32,
+ self.replication_factor as u64,
)?;
}
}
@@ -813,17 +813,19 @@ impl ClusterLayout {
) -> Result<Message, Error> {
let mut msg = Message::new();
- let used_cap = self.partition_size * NB_PARTITIONS as u32 * self.replication_factor as u32;
+ let used_cap = self.partition_size * NB_PARTITIONS as u64 * self.replication_factor as u64;
let total_cap = self.get_total_capacity()?;
let percent_cap = 100.0 * (used_cap as f32) / (total_cap as f32);
msg.push("".into());
msg.push(format!(
"Usable capacity / Total cluster capacity: {} / {} ({:.1} %)",
- used_cap, total_cap, percent_cap
+ ByteSize::b(used_cap).to_string_as(false),
+ ByteSize::b(total_cap).to_string_as(false),
+ percent_cap
));
msg.push("".into());
msg.push(
- "If the percentage is to low, it might be that the \
+ "If the percentage is too low, it might be that the \
replication/redundancy constraints force the use of nodes/zones with small \
storage capacities. \
You might want to rebalance the storage capacities or relax the constraints. \
@@ -833,9 +835,9 @@ impl ClusterLayout {
msg.push(format!(
"Recall that because of the replication factor, the actual available \
storage capacity is {} / {} = {}.",
- used_cap,
+ ByteSize::b(used_cap).to_string_as(false),
self.replication_factor,
- used_cap / self.replication_factor as u32
+ ByteSize::b(used_cap / self.replication_factor as u64).to_string_as(false)
));
// We define and fill in the following tables
@@ -914,34 +916,34 @@ impl ClusterLayout {
replicated_partitions
));
- let available_cap_z: u32 = self.partition_size * replicated_partitions as u32;
+ let available_cap_z: u64 = self.partition_size * replicated_partitions as u64;
let mut total_cap_z = 0;
for n in nodes_of_z.iter() {
total_cap_z += self.get_node_capacity(&self.node_id_vec[*n])?;
}
let percent_cap_z = 100.0 * (available_cap_z as f32) / (total_cap_z as f32);
msg.push(format!(
- " Usable capacity / Total capacity: {}/{} ({:.1}%).",
- available_cap_z, total_cap_z, percent_cap_z
+ " Usable capacity / Total capacity: {} / {} ({:.1}%).",
+ ByteSize::b(available_cap_z).to_string_as(false),
+ ByteSize::b(total_cap_z).to_string_as(false),
+ percent_cap_z
));
for n in nodes_of_z.iter() {
- let available_cap_n = stored_partitions[*n] as u32 * self.partition_size;
+ let available_cap_n = stored_partitions[*n] as u64 * self.partition_size;
let total_cap_n = self.get_node_capacity(&self.node_id_vec[*n])?;
let tags_n = (self
.node_role(&self.node_id_vec[*n])
.ok_or("Node not found."))?
.tags_string();
msg.push(format!(
- " Node {}: {} partitions ({} new) ; \
+ " Node {:?}: {} partitions ({} new) ; \
usable/total capacity: {} / {} ({:.1}%) ; tags:{}",
- &self.node_id_vec[*n].to_vec()[0..2]
- .to_vec()
- .encode_hex::<String>(),
+ self.node_id_vec[*n],
stored_partitions[*n],
new_partitions[*n],
- available_cap_n,
- total_cap_n,
+ ByteSize::b(available_cap_n).to_string_as(false),
+ ByteSize::b(total_cap_n).to_string_as(false),
(available_cap_n as f32) / (total_cap_n as f32) * 100.0,
tags_n
));
@@ -1041,7 +1043,7 @@ mod tests {
fn update_layout(
cl: &mut ClusterLayout,
node_id_vec: &Vec<u8>,
- node_capacity_vec: &Vec<u32>,
+ node_capacity_vec: &Vec<u64>,
node_zone_vec: &Vec<String>,
zone_redundancy: usize,
) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 23:52:21 +0000