// traceReq decides if we want to trigger a trace event (when sending a request) and if so deals with it
func (c *client) traceReq(req *Request) {
if req.shouldTrace() {
trace.Send(&traceproto.Event{
Timestamp: proto.Int64(time.Now().UnixNano()),
TraceId: proto.String(req.TraceID()),
Type: traceproto.Event_REQ.Enum(),
MessageId: proto.String(req.MessageID()),
ParentMessageId: proto.String(req.ParentMessageID()),
From: proto.String(req.From()),
FromEndpoint: proto.String(req.FromEndpoint()),
To: proto.String(fmt.Sprintf("%v.%v", req.Service(), req.Endpoint())),
Hostname: proto.String(c.hostname),
Az: proto.String(c.az),
Payload: proto.String(""), // @todo
PersistentTrace: proto.Bool(req.TraceShouldPersist()),
})
}
}
// traceIn traces a request inbound to a service to handle
func traceIn(req *Request) {
if req.shouldTrace() {
go trace.Send(&traceproto.Event{
Timestamp: proto.Int64(time.Now().UnixNano()),
TraceId: proto.String(req.TraceID()),
Type: traceproto.Event_IN.Enum(),
MessageId: proto.String(req.MessageID()),
ParentMessageId: proto.String(req.ParentMessageID()),
From: proto.String(req.From()),
To: proto.String(fmt.Sprintf("%v.%v", req.Service(), req.Endpoint())),
Hostname: proto.String(hostname),
Az: proto.String(az),
Payload: proto.String(""), // @todo
HandlerInstanceId: proto.String(InstanceID),
PersistentTrace: proto.Bool(req.TraceShouldPersist()),
})
}
}
// traceAttemptTimeout decides if we want to trigger a trace event for an attempt timeout, and processes it
func (c *client) traceAttemptTimeout(req *Request, attemptNum int, timeout time.Duration) {
if req.shouldTrace() {
desc := fmt.Sprintf("Attempt %v timeout talking to '%s.%s' after '%v' for '%s'", attemptNum, req.Service(), req.Endpoint(), timeout, req.MessageID())
trace.Send(&traceproto.Event{
Timestamp: proto.Int64(time.Now().UnixNano()),
TraceId: proto.String(req.TraceID()),
Type: traceproto.Event_ATTEMPT_TIMEOUT.Enum(),
MessageId: proto.String(req.MessageID()),
From: proto.String(req.From()),
FromEndpoint: proto.String(req.FromEndpoint()),
To: proto.String(fmt.Sprintf("%v.%v", req.Service(), req.Endpoint())),
ParentMessageId: proto.String(req.ParentMessageID()),
Hostname: proto.String(c.hostname),
Az: proto.String(c.az),
Payload: proto.String(""), // @todo
ErrorCode: proto.String("com.hailocab.kernel.platform.attemptTimeout"),
ErrorDescription: proto.String(desc),
Duration: proto.Int64(int64(timeout)),
PersistentTrace: proto.Bool(req.TraceShouldPersist()),
})
}
}
// traceRsp decides if we want to trigger a trace event (when processing response) and if so deals with it
func (c *client) traceRsp(req *Request, rsp *Response, err errors.Error, d time.Duration) {
if req.shouldTrace() {
e := &traceproto.Event{
Timestamp: proto.Int64(time.Now().UnixNano()),
TraceId: proto.String(req.TraceID()),
Type: traceproto.Event_REP.Enum(),
MessageId: proto.String(req.MessageID()),
From: proto.String(req.From()),
FromEndpoint: proto.String(req.FromEndpoint()),
To: proto.String(fmt.Sprintf("%v.%v", req.Service(), req.Endpoint())),
ParentMessageId: proto.String(req.ParentMessageID()),
Hostname: proto.String(c.hostname),
Az: proto.String(c.az),
Payload: proto.String(""), // @todo
Duration: proto.Int64(int64(d)),
PersistentTrace: proto.Bool(req.TraceShouldPersist()),
}
if err != nil {
e.ErrorCode = proto.String(err.Code())
e.ErrorDescription = proto.String(err.Description())
}
trace.Send(e)
}
}
// traceOut traces a request outbound from a service handler
func traceOut(req *Request, msg proto.Message, err errors.Error, d time.Duration) {
if req.shouldTrace() {
e := &traceproto.Event{
Timestamp: proto.Int64(time.Now().UnixNano()),
TraceId: proto.String(req.TraceID()),
Type: traceproto.Event_OUT.Enum(),
MessageId: proto.String(req.MessageID()),
ParentMessageId: proto.String(req.ParentMessageID()),
From: proto.String(req.From()),
To: proto.String(fmt.Sprintf("%v.%v", req.Service(), req.Endpoint())),
Hostname: proto.String(hostname),
Az: proto.String(az),
Payload: proto.String(""), // @todo
HandlerInstanceId: proto.String(InstanceID),
Duration: proto.Int64(int64(d)),
PersistentTrace: proto.Bool(req.TraceShouldPersist()),
}
if err != nil {
e.ErrorCode = proto.String(err.Code())
e.ErrorDescription = proto.String(err.Description())
}
trace.Send(e)
}
}