Struct CircuitBreakerMiddleware 

pub struct CircuitBreakerMiddleware { /* private fields */ }

Middleware that implements the circuit breaker pattern for tool calls.

Tracks failures per tool name and opens the circuit when failures exceed the configured threshold. After the recovery timeout, a single probe request is allowed through (half-open). If it succeeds, the circuit closes; if it fails, the circuit reopens.

Implementations

impl CircuitBreakerMiddleware

pub fn new(config: CircuitBreakerConfig) -> Self

pub async fn state_for(&self, tool_name: &str) -> CircuitState

Get the current state for a given tool name.

Trait Implementations

impl AgentMiddleware for CircuitBreakerMiddleware

fn wrap_tool_call<'life0, 'life1, 'async_trait>( &'life0 self, request: ToolCallRequest, next: &'life1 dyn ToolCaller, ) -> Pin<Box<dyn Future<Output = Result<Value, SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Wraps a tool call. Override to intercept or replace tool execution.

fn wrap_model_call<'life0, 'life1, 'async_trait>( &'life0 self, request: ModelRequest, next: &'life1 dyn ModelCaller, ) -> Pin<Box<dyn Future<Output = Result<ModelResponse, SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Wraps the model call. Override to intercept or replace the model invocation.

fn before_agent<'life0, 'life1, 'async_trait>( &'life0 self, _messages: &'life1 mut Vec<Message>, ) -> Pin<Box<dyn Future<Output = Result<(), SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Called once when the agent starts executing.

fn after_agent<'life0, 'life1, 'async_trait>( &'life0 self, _messages: &'life1 mut Vec<Message>, ) -> Pin<Box<dyn Future<Output = Result<(), SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Called once when the agent finishes executing.

fn before_model<'life0, 'life1, 'async_trait>( &'life0 self, _request: &'life1 mut ModelRequest, ) -> Pin<Box<dyn Future<Output = Result<(), SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Called before each model invocation. Can modify the request.

fn after_model<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _request: &'life1 ModelRequest, _response: &'life2 mut ModelResponse, ) -> Pin<Box<dyn Future<Output = Result<(), SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Called after each model invocation. Can modify the response.

fn before_file_op<'life0, 'life1, 'async_trait>( &'life0 self, _op: &'life1 FileOp, ) -> Pin<Box<dyn Future<Output = Result<FileOpDecision, SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Called before a file operation. Return Deny to block it.

fn after_file_op<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _op: &'life1 FileOp, _result: &'life2 FileOpResult, ) -> Pin<Box<dyn Future<Output = Result<(), SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Called after a file operation completes.

fn before_command<'life0, 'life1, 'async_trait>( &'life0 self, _cmd: &'life1 CommandOp, ) -> Pin<Box<dyn Future<Output = Result<CommandDecision, SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Called before a shell command. Return Deny to block it.

fn after_command<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, _cmd: &'life1 CommandOp, _result: &'life2 CommandResult, ) -> Pin<Box<dyn Future<Output = Result<(), SynapticError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Called after a shell command completes.