micro/debug/service/proto/debug.proto

syntax = "proto3";

service Debug {
        rpc Log(LogRequest) returns (stream Record) {};
        rpc Health(HealthRequest) returns (HealthResponse) {};
        rpc Stats(StatsRequest) returns (StatsResponse) {};
	rpc Trace(TraceRequest) returns (TraceResponse) {};
}

message HealthRequest {
	// optional service name
	string service = 1;
}

message HealthResponse {
	// default: ok
	string status = 1;
}

message StatsRequest {
	// optional service name
	string service = 1;
}

message StatsResponse {
	// timestamp of recording
	uint64 timestamp = 1;
	// unix timestamp
	uint64 started = 2;
	// in seconds
	uint64 uptime = 3;
	// in bytes
	uint64 memory = 4;
	// num threads
	uint64 threads = 5;
	// total gc in nanoseconds
	uint64 gc = 6;
	// total number of requests
	uint64 requests = 7;
	// total number of errors
	uint64 errors = 8;
}

// LogRequest requests service logs
message LogRequest {
	// service to request logs for
	string service = 1;
	// stream records continuously
	bool stream = 2;
	// count of records to request
	int64 count = 3;
	// relative time in seconds
	// before the current time
	// from which to show logs
	int64 since = 4;
}

// Record is service log record
message Record {
    // timestamp of log record
    int64 timestamp = 1;
    // record metadata
    map<string,string> metadata = 2;
    // message
    string message = 3;
}

message TraceRequest {
	// trace id to retrieve
	string id = 1;
}

message TraceResponse {
	repeated Span spans = 1;
}


enum SpanType {
    INBOUND = 0;
    OUTBOUND = 1;
}

message Span {
	// the trace id
	string trace = 1;
	// id of the span
	string id = 2;
	// parent span
	string parent = 3;
	// name of the resource
	string name = 4;
	// time of start in nanoseconds
	uint64 started = 5;
	// duration of the execution in nanoseconds
	uint64 duration = 6;
	// associated metadata
	map<string,string> metadata = 7;
	SpanType type = 8;
}