Alex
b490ebc7f6
- Explicit "replication_mode" configuration parameters that takes either "none", "2" or "3" as values, instead of letting user configure replication factor themselves. These are presets whose corresponding replication/quorum values can be found in replication/mode.rs - Explicit support for single-node and two-node deployments (number of nodes must be at least "replication_mode", with "none" we can have only one node) - Ring is now stored much more compactly with 256*8 + n*32 bytes, instead of 256*32 bytes - Support for gateway-only nodes that do not store data (these nodes still need a metadata_directory to store the list of bucket and keys since those are stored on all nodes; it also technically needs a data_directory to start but it will stay empty unless we have bugs)
48 lines
749 B
Rust
48 lines
749 B
Rust
pub enum ReplicationMode {
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None,
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TwoWay,
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ThreeWay,
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}
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impl ReplicationMode {
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pub fn parse(v: &str) -> Option<Self> {
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match v {
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"none" | "1" => Some(Self::None),
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"2" => Some(Self::TwoWay),
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"3" => Some(Self::ThreeWay),
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_ => None,
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}
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}
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pub fn control_write_max_faults(&self) -> usize {
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match self {
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Self::None => 0,
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_ => 1,
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}
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}
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pub fn replication_factor(&self) -> usize {
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match self {
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Self::None => 1,
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Self::TwoWay => 2,
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Self::ThreeWay => 3,
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}
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}
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pub fn read_quorum(&self) -> usize {
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match self {
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Self::None => 1,
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Self::TwoWay => 1,
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Self::ThreeWay => 2,
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}
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}
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pub fn write_quorum(&self) -> usize {
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match self {
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Self::None => 1,
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Self::TwoWay => 2,
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Self::ThreeWay => 2,
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}
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}
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}
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