Struct MemoryBackend 

pub struct MemoryBackend { /* private fields */ }

Every script in memory: for tests, and for hosts whose scripts are configuration that is published again at every start.

Implementations

impl MemoryBackend

pub fn new() -> MemoryBackend

An empty backend.

Trait Implementations

impl Backend for MemoryBackend

fn head(&self, name: &str) -> Result<Option<Head>>

The head of name, or None when no such script exists.

fn swap_head( &self, name: &str, expected: Option<&Head>, new: &Head, ) -> Result<()>

Replace the head of name with new, if it is still expected (None: if no head exists yet). Otherwise a typed Conflict: someone got there first.

fn put_version(&self, name: &str, version: &Version) -> Result<()>

Store a version under name. Idempotent: a version is its content.

fn version(&self, name: &str, digest: &str) -> Result<Option<Version>>

The version digest of name, or None. An implementation verifies the content against the digest and refuses a mismatch.

fn names(&self) -> Result<Vec<String>>

Every script name that has a head, sorted.

fn start_run(&self, name: &str, run: &Run) -> Result<u64>

Record a run that is starting, under a fresh id (the id field is ignored), and return the id.

fn finish_run(&self, name: &str, run: &Run) -> Result<()>

Replace the record of a run already started.

fn run(&self, name: &str, id: u64) -> Result<Option<Run>>

Run id of name, or None.

fn last_run(&self, name: &str) -> Result<Option<Run>>

The run of name with the highest id, or None.

impl Default for MemoryBackend

fn default() -> Self

Returns the “default value” for a type.