def logger(self, event: EventEnvelope): if isinstance(event, EventEnvelope): self.log.info('trace=' + str(event.get_headers()) + ', annotations=' + str(event.get_body())) # forward to user provided distributed trace logger if any current_time = time.time() if self._dt_last_check is None or current_time - self._dt_last_check > 5.0: self._dt_last_check = current_time self._dt_found = self.platform.exists(self._dt_processor) if self._dt_found: te = EventEnvelope() te.set_to(self._dt_processor).set_body(event.get_body()) for h in event.get_headers(): te.set_header(h, event.get_header(h)) self.platform.send_event(te)
def logger(self, event: EventEnvelope): if isinstance(event, EventEnvelope): self.log.info( f'trace={event.get_headers()}, annotations={event.get_body()}') if self.platform.is_trace_supported(): # forward to user provided distributed trace logger if any current_time = time.time() if self._dt_last_check is None or current_time - self._dt_last_check > 5.0: self._dt_last_check = current_time self._dt_found = self.platform.exists(self._dt_processor) if self._dt_found: trace_event = EventEnvelope() trace_event.set_to(self._dt_processor).set_body( {'annotations': event.get_body()}) for h in event.get_headers(): trace_event.set_header(h, event.get_header(h)) self.platform.send_event(trace_event)
def handle_event(self, event, instance): headers = dict() if 'headers' not in event else event['headers'] body = None if 'body' not in event else event['body'] result = None error_code = None error_msg = None # start distributed tracing if the event contains trace_id and trace_path if 'trace_id' in event and 'trace_path' in event: self.platform.start_tracing(self.route, trace_id=event['trace_id'], trace_path=event['trace_path']) else: self.platform.start_tracing(self.route) # execute user function begin = end = time.time() try: if instance == 0: # service is an interceptor. e.g. inbox for RPC call self.user_function(EventEnvelope().from_map(event)) elif instance == -1: # service is a singleton result = self.user_function(headers, body) else: # service with multiple instances result = self.user_function(headers, body, instance) end = time.time() except AppException as e: error_code = e.get_status() error_msg = e.get_message() except ValueError as e: error_code = 400 error_msg = str(e) except Exception as e: error_code = 500 error_msg = str(e) # execution time is rounded to 3 decimal points exec_time = float(format((end - begin) * 1000, '.3f')) if error_code: if 'reply_to' in event: # set exception as result result = EventEnvelope().set_status(error_code).set_body( error_msg) else: self.log.warn("Unhandled exception for " + self.route + " - code=" + str(error_code) + ", message=" + error_msg) # # interceptor should not send regular response because it will forward the request to another function. # However, if error_code exists, the system will send the exception response. # This allows interceptor to simply throw exception to indicate an error case. # if 'reply_to' in event and (error_code or not self.interceptor): reply_to = event['reply_to'] # in case this is a RPC call from within if reply_to.startswith('->'): reply_to = reply_to[2:] response = EventEnvelope().set_to(reply_to) if not error_code: response.set_exec_time(exec_time, False) if 'extra' in event: response.set_extra(event['extra']) if 'cid' in event: response.set_correlation_id(event['cid']) if 'trace_id' in event and 'trace_path' in event: response.set_trace(event['trace_id'], event['trace_path']) if isinstance(result, EventEnvelope): for h in result.get_headers(): response.set_header(h, result.get_header(h)) response.set_body(result.get_body()) response.set_status(result.get_status()) else: response.set_body(result) try: self.platform.send_event(response.set_from(self.route)) except Exception as e: self.log.warn("Event dropped because " + str(e)) # send tracing info to distributed trace logger trace_info = self.platform.stop_tracing() if self.tracing and trace_info is not None and isinstance(trace_info, TraceInfo) \ and trace_info.get_id() is not None and trace_info.get_path() is not None: dt = EventEnvelope().set_to(self.DISTRIBUTED_TRACING).set_body( trace_info.get_annotations()) dt.set_header('origin', self.platform.get_origin()) dt.set_header('id', trace_info.get_id()).set_header( 'path', trace_info.get_path()) dt.set_header('service', self.route).set_header('start', trace_info.get_start_time()) if not error_code: dt.set_header('success', 'true') dt.set_header('exec_time', exec_time) else: dt.set_header('success', 'false') dt.set_header('status', error_code) dt.set_header('exception', error_msg) self.platform.send_event(dt) self._loop.call_soon_threadsafe(self._ack)