diff options
Diffstat (limited to 'src/table/replication/fullcopy.rs')
-rw-r--r-- | src/table/replication/fullcopy.rs | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/table/replication/fullcopy.rs b/src/table/replication/fullcopy.rs new file mode 100644 index 00000000..a62a6c3c --- /dev/null +++ b/src/table/replication/fullcopy.rs @@ -0,0 +1,59 @@ +use std::sync::Arc; + +use garage_rpc::membership::System; +use garage_rpc::ring::Ring; +use garage_util::data::*; + +use crate::replication::*; + +#[derive(Clone)] +pub struct TableFullReplication { + pub max_faults: usize, +} + +#[derive(Clone)] +struct Neighbors { + ring: Arc<Ring>, + neighbors: Vec<UUID>, +} + +impl TableFullReplication { + pub fn new(max_faults: usize) -> Self { + TableFullReplication { max_faults } + } +} + +impl TableReplication for TableFullReplication { + // Full replication schema: all nodes store everything + // Writes are disseminated in an epidemic manner in the network + + // Advantage: do all reads locally, extremely fast + // Inconvenient: only suitable to reasonably small tables + + fn read_nodes(&self, _hash: &Hash, system: &System) -> Vec<UUID> { + vec![system.id] + } + fn read_quorum(&self) -> usize { + 1 + } + + fn write_nodes(&self, hash: &Hash, system: &System) -> Vec<UUID> { + self.replication_nodes(hash, system.ring.borrow().as_ref()) + } + fn write_quorum(&self, system: &System) -> usize { + system.ring.borrow().config.members.len() - self.max_faults + } + fn max_write_errors(&self) -> usize { + self.max_faults + } + + fn replication_nodes(&self, _hash: &Hash, ring: &Ring) -> Vec<UUID> { + ring.config.members.keys().cloned().collect::<Vec<_>>() + } + fn split_points(&self, _ring: &Ring) -> Vec<Hash> { + let mut ret = vec![]; + ret.push([0u8; 32].into()); + ret.push([0xFFu8; 32].into()); + ret + } +} |