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Simplify replication logic

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This commit is contained in:
Alex Auvolat
2021-03-16 11:14:27 +01:00
parent 6a8439fd13
commit 1d9961e411
9 changed files with 60 additions and 58 deletions
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src/table/replication/parameters.rs
+7 -6
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@@ -1,4 +1,3 @@
use garage_rpc::membership::System;
use garage_rpc::ring::Ring;
use garage_util::data::*;
@@ -7,16 +6,18 @@ pub trait TableReplication: Send + Sync {
// See examples in table_sharded.rs and table_fullcopy.rs
// To understand various replication methods
// Partition number of data item (for Merkle tree)
fn partition_of(&self, hash: &Hash) -> u16;
// Which nodes to send reads from
fn read_nodes(&self, hash: &Hash, system: &System) -> Vec<UUID>;
fn read_nodes(&self, hash: &Hash) -> Vec<UUID>;
fn read_quorum(&self) -> usize;
// Which nodes to send writes to
fn write_nodes(&self, hash: &Hash, system: &System) -> Vec<UUID>;
fn write_quorum(&self, system: &System) -> usize;
fn write_nodes(&self, hash: &Hash) -> Vec<UUID>;
fn write_quorum(&self) -> usize;
fn max_write_errors(&self) -> usize;
// Which are the nodes that do actually replicate the data
fn replication_nodes(&self, hash: &Hash, ring: &Ring) -> Vec<UUID>;
// Get partition boundaries
fn split_points(&self, ring: &Ring) -> Vec<Hash>;
}