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FailoverClient

zerofs_client::failover

Struct FailoverClient 

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pub struct FailoverClient { /* private fields */ }
Expand description

A client that connects to the current HA leader and transparently re-routes across a failover. See the module docs for retry-safety.

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impl FailoverClient

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pub async fn connect(targets: Vec<String>) -> Result<Arc<Self>, ZeroFsError>

Connect to the serving leader among targets, retrying while none serves yet (bring-up or a failover gap).

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pub async fn read(&self, path: impl AsRef<Path>) -> Result<Bytes, ZeroFsError>

Read a file, re-routing across a failover. Idempotent.

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pub async fn write( &self, path: impl AsRef<Path>, data: &[u8], ) -> Result<(), ZeroFsError>

Write a file (create + truncate = last-write-wins), re-routing across a failover. Idempotent.

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pub async fn create_dir( &self, path: impl AsRef<Path>, mode: u32, ) -> Result<Metadata, ZeroFsError>

Create a directory, re-routing across a failover. Retry-safe via a stable op-id.

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pub async fn create( self: &Arc<Self>, path: impl AsRef<Path>, ) -> Result<Arc<File>, ZeroFsError>

Create-or-truncate a file (mode 0o644) and return a failover-aware handle: its I/O is bounded by a per-op timeout and, on a leader failover, the handle re-opens the path on the re-probed leader and retries. Retry-safe via a stable op-id.

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pub async fn remove_file( &self, path: impl AsRef<Path>, ) -> Result<(), ZeroFsError>

Remove a file, symlink, or device node, re-routing across a failover. Retry-safe via a stable op-id.

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pub async fn remove_dir( &self, path: impl AsRef<Path>, ) -> Result<(), ZeroFsError>

Remove an empty directory, re-routing across a failover. Retry-safe via a stable op-id.

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pub async fn rename( &self, from: impl AsRef<Path>, to: impl AsRef<Path>, ) -> Result<(), ZeroFsError>

Atomically rename/move, re-routing across a failover. Retry-safe via a stable op-id.

Create a hard link, re-routing across a failover. Retry-safe via a stable op-id.

Create a symlink, re-routing across a failover. Retry-safe via a stable op-id.

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pub async fn mknod( &self, path: impl AsRef<Path>, kind: NodeKind, mode: u32, ) -> Result<Metadata, ZeroFsError>

Create a fifo, socket, or device node, re-routing across a failover. Retry-safe via a stable op-id.

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