Struct HandlerCore 

pub struct HandlerCore { /* private fields */ }

Shared core handling logic

Encapsulates all MCP request handling shared logic, eliminating duplication between CratesDocsHandler and CratesDocsHandlerCore.

Design

• Provides core methods for tool execution, list queries, etc.
• Supports optional metrics integration
• Supports configuration merging

Implementations

impl HandlerCore

pub fn new(server: Arc<CratesDocsServer>) -> Self

Create new core handler

Arguments

• server - Server instance

pub fn with_config(server: Arc<CratesDocsServer>, config: HandlerConfig) -> Self

Create core handler with configuration

pub fn with_merged_config( server: Arc<CratesDocsServer>, base_config: HandlerConfig, override_config: Option<HandlerConfig>, ) -> Self

Create core handler with merged configuration

pub fn with_metrics(self, metrics: Arc<ServerMetrics>) -> Self

Set metrics

pub fn server(&self) -> &Arc<CratesDocsServer>

Get server reference

pub fn tool_registry(&self) -> &ToolRegistry

Get tool registry

pub fn config(&self) -> &HandlerConfig

Get configuration

pub fn metrics(&self) -> Option<&Arc<ServerMetrics>>

Get metrics (optional)

pub fn list_tools(&self) -> ListToolsResult

Get all tools list

pub fn list_resources(&self) -> ListResourcesResult

Get empty resources list

pub fn list_prompts(&self) -> ListPromptsResult

Get empty prompts list

pub async fn execute_tool( &self, params: CallToolRequestParams, ) -> ToolExecutionResult

Execute tool call (core logic)

This method encapsulates the complete tool execution flow:

• tracing tracking
• timing statistics
• metrics recording (if enabled)

Returns

Returns ToolExecutionResult, can be converted to different types to adapt to different traits