Module metrics 

Structs

ACTIVE_CONNECTIONS

REGISTRY

RPC_REQUESTS_TOTAL

RPC_REQUEST_DURATION_SECONDS

TOOL_CALLS_TOTAL

Functions

decrement_active_connections

Decrement active connections

get_metrics_as_string

Get all metrics as a string

increment_active_connections

Increment active connections

init_metrics

Initialize all metrics and register them with the Prometheus registry

record_rpc_request

Record an RPC request with its duration

record_tool_call

Record a tool call