Struct InMemoryConfigSink 

pub struct InMemoryConfigSink { /* private fields */ }

In-memory writable config store.

A process-local reference ConfigSink backed by a BTreeMap. Useful for tests, defaults, and composing override layers without touching disk or a remote backend. Cheaply cloneable; clones share the same underlying store.

With the watch feature enabled it also implements ConfigWatch: every set and remove fans a change event out to active subscribers.

Implementations

impl InMemoryConfigSink

pub fn new() -> Self

Create an empty in-memory sink.

pub fn get(&self, key: &str) -> Option<SecretString>

Return the masked value stored at key, if present.

The returned SecretString masks its plaintext in display, debug, and serialization; use SecretString::expose to read the plaintext intentionally.

pub fn len(&self) -> usize

Return the number of stored keys.

pub fn is_empty(&self) -> bool

Return true if the store holds no keys.

Trait Implementations

impl Clone for InMemoryConfigSink

fn clone(&self) -> InMemoryConfigSink

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl ConfigSink for InMemoryConfigSink

fn set(&self, key: &str, value: SecretString) -> AppResult<()>

Set or replace the value stored at key.

fn remove(&self, key: &str) -> AppResult<()>

Remove the value stored at key.

fn set_many(&self, entries: Vec<(String, SecretString)>) -> AppResult<()>

Set many key/value pairs.

impl ConfigWatch for InMemoryConfigSink

Available on crate feature watch only.

fn watch(&self, cancel: CancellationToken) -> AppResult<ConfigChangeStream>

Subscribe to configuration changes until cancel is triggered.

impl Debug for InMemoryConfigSink

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for InMemoryConfigSink

fn default() -> InMemoryConfigSink

Returns the “default value” for a type.