Merge pull request 'Implement /health admin API endpoint to check node health' (#440) from admin-health-api into main

Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/440

1 files changed, 57 insertions, 0 deletions

diff --git a/src/rpc/replication_mode.rs b/src/rpc/replication_mode.rs
new file mode 100644
index 00000000..e244e063
--- /dev/null
+++ b/src/rpc/replication_mode.rs
@@ -0,0 +1,57 @@
+#[derive(Clone, Copy)]
+pub enum ReplicationMode {
+	None,
+	TwoWay,
+	TwoWayDangerous,
+	ThreeWay,
+	ThreeWayDegraded,
+	ThreeWayDangerous,
+}
+
+impl ReplicationMode {
+	pub fn parse(v: &str) -> Option<Self> {
+		match v {
+			"none" | "1" => Some(Self::None),
+			"2" => Some(Self::TwoWay),
+			"2-dangerous" => Some(Self::TwoWayDangerous),
+			"3" => Some(Self::ThreeWay),
+			"3-degraded" => Some(Self::ThreeWayDegraded),
+			"3-dangerous" => Some(Self::ThreeWayDangerous),
+			_ => None,
+		}
+	}
+
+	pub fn control_write_max_faults(&self) -> usize {
+		match self {
+			Self::None => 0,
+			_ => 1,
+		}
+	}
+
+	pub fn replication_factor(&self) -> usize {
+		match self {
+			Self::None => 1,
+			Self::TwoWay | Self::TwoWayDangerous => 2,
+			Self::ThreeWay | Self::ThreeWayDegraded | Self::ThreeWayDangerous => 3,
+		}
+	}
+
+	pub fn read_quorum(&self) -> usize {
+		match self {
+			Self::None => 1,
+			Self::TwoWay | Self::TwoWayDangerous => 1,
+			Self::ThreeWay => 2,
+			Self::ThreeWayDegraded | Self::ThreeWayDangerous => 1,
+		}
+	}
+
+	pub fn write_quorum(&self) -> usize {
+		match self {
+			Self::None => 1,
+			Self::TwoWay => 2,
+			Self::TwoWayDangerous => 1,
+			Self::ThreeWay | Self::ThreeWayDegraded => 2,
+			Self::ThreeWayDangerous => 1,
+		}
+	}
+}