luizalabs/sindico: controllers/watchdog/service.go; 8 LoC

[githubvet]

Found a possible issue in luizalabs/sindico at controllers/watchdog/service.go

Below is the message reported by the analyzer for this snippet of code. Beware that the analyzer only reports the first
issue it finds, so please do not limit your consideration to the contents of the below message.

function call which takes a reference to svc at line 73 may start a goroutine

Click here to see the code in its original context.

Click here to show the 8 line(s) of Go which triggered the analyzer.

	for _, svc := range svcs.Items {
		ns := svc.ObjectMeta.Namespace
		if re != nil && re.MatchString(ns) {
			s.logger.Debug("skip ns regex", "ns", ns)
			continue
		}
		s.checkService(cfg, &svc)
	}

Click here to show extra information the analyzer produced.

The following dot graph describes paths through the callgraph that could lead to a function calling a goroutine:
digraph G {
  "(PostMessage, 2)" -> {"(PostMessage, 4)";}
  "(Encode, 0)" -> {"(normalizeFlagName, 1)";}
  "(SetFinalizer, 2)" -> {"(Print, 1)";}
  "(HasPrefix, 2)" -> {"(HasPrefix, 2)";"(timeoutFlush, 1)";}
  "(notify, 2)" -> {"(PostMessage, 2)";}
  "(URL, 0)" -> {"(Encode, 0)";}
  "(isTextResponse, 1)" -> {"(HasPrefix, 2)";}
  "(Pop, 0)" -> {}
  "(parseTokenCmdOutput, 1)" -> {"(parseJSONPath, 3)";}
  "(GetUserInfoContext, 2)" -> {"(userRequest, 4)";}
  "(Unmarshal, 2)" -> {"(convertSliceNumbers, 1)";}
  "(extractUser, 1)" -> {"(GetUserInfo, 1)";}
  "(MessageReceived, 3)" -> {"(handleCmd, 1)";}
  "(WriteSettingsAck, 0)" -> {"(Pop, 0)";}
  "(Token, 0)" -> {"(parseTokenCmdOutput, 1)";}
  "(run, 3)" -> {"(addConnLocked, 2)";}
  "(checkResetOrDone, 0)" -> {}
  "(convertStruct, 3)" -> {}
  "(match, 1)" -> {"(ManageConnection, 0)";"(timeoutFlush, 1)";"(MessageReceived, 3)";"(backup, 1)";"(XMLToStruct, 2)";}
  "(validateDuration, 1)" -> {"(Atoi, 1)";}
  "(handleResponse, 2)" -> {"(setResponseUncompressed, 1)";}
  "(setTargetKind, 2)" -> {"(Token, 0)";}
  "(cancelStream, 0)" -> {"(Context, 0)";}
  "(checkService, 2)" -> {"(GetLabelValue, 2)";"(notify, 2)";}
  "(getDelegate, 0)" -> {"(NewRESTMapper, 2)";}
  "(New, 1)" -> {"(HTTPWrappersForConfig, 2)";}
  "(Error, 0)" -> {"(NewAggregate, 1)";}
  "(normalizeFlagName, 1)" -> {"(ManageConnection, 0)";"(MessageReceived, 3)";"(backup, 1)";}
  "(Close, 0)" -> {"(SetFinalizer, 2)";}
  "(processWindowUpdate, 1)" -> {"(Broadcast, 0)";}
  "(Broadcast, 0)" -> {"(Pop, 0)";}
  "(convertToVersion, 3)" -> {"(setTargetKind, 2)";}
  "(HTTPWrappersForConfig, 2)" -> {"(NewCacheRoundTripper, 2)";}
  "(aggregate, 1)" -> {"(match, 1)";}
  "(Duration, 1)" -> {"(validateDuration, 1)";}
  "(addConnIfNeeded, 3)" -> {"(run, 3)";}
  "(backup, 1)" -> {"(Debug, 3)";}
  "(parseJSONPath, 3)" -> {"(Execute, 2)";}
  "(Convert, 1)" -> {"(convertStruct, 3)";}
  "(convertNumber, 1)" -> {"(Int64, 0)";}
  "(run, 0)" -> {"(assignLevelsToCharactersRemovedByX9, 0)";}
  "(handleCmd, 1)" -> {}
  "(in, 6)" -> {"(assignBracketType, 2)";}
  "(setResponseUncompressed, 1)" -> {"(cancelStream, 0)";}
  "(Execute, 2)" -> {}
  "(DecorateSender, 2)" -> {}
  "(SubResource, 1)" -> {"(transformResponse, 2)";"(Get, 1)";"(Decode, 3)";"(EncodeParameters, 2)";"(Error, 0)";"(tryThrottle, 0)";"(request, 1)";"(Version, 0)";}
  "(PostMessage, 4)" -> {"(Close, 0)";"(Unmarshal, 2)";"(New, 1)";}
  "(convertSliceNumbers, 1)" -> {"(convertNumber, 1)";}
  "(runWithRecovery, 1)" -> {"(Run, 0)";}
  "(processSettings, 1)" -> {"(WriteSettingsAck, 0)";}
  "(Debug, 3)" -> {"(Wrapf, 3)";}
  "(addConnLocked, 2)" -> {"(newClientConn, 2)";}
  "(newRequest, 3)" -> {"(initRequest, 1)";}
  "(Version, 0)" -> {"(String, 0)";}
  "(AddInt64, 2)" -> {}
  "(XMLToStruct, 2)" -> {"(Token, 0)";}
  "(classBeforePair, 1)" -> {"(getStrongTypeN0, 1)";}
  "(Run, 0)" -> {"(run, 1)";}
  "(Wrapf, 3)" -> {"(PutObjectRequest, 1)";}
  "(initRequest, 1)" -> {"(checkResetOrDone, 0)";}
  "(Get, 2)" -> {"(SubResource, 1)";}
  "(Atoi, 1)" -> {"(timeoutFlush, 1)";"(ManageConnection, 0)";"(MessageReceived, 3)";"(backup, 1)";}
  "(configureTransport, 1)" -> {"(addConnIfNeeded, 3)";}
  "(ManageConnection, 0)" -> {}
  "(assignBracketType, 2)" -> {"(classBeforePair, 1)";}
  "(newClientConn, 2)" -> {}
  "(userRequest, 4)" -> {"(Send, 2)";}
  "(request, 1)" -> {"(Duration, 1)";}
  "(assignLevelsToCharactersRemovedByX9, 0)" -> {"(in, 6)";}
  "(run, 1)" -> {}
  "(Send, 2)" -> {"(SendWithSender, 3)";}
  "(ConvertToVersion, 2)" -> {"(convertToVersion, 3)";}
  "(tryThrottle, 0)" -> {"(URL, 0)";}
  "(processHeaders, 1)" -> {"(handleResponse, 2)";}
  "(Context, 0)" -> {}
  "(SendWithSender, 3)" -> {"(DecorateSender, 2)";}
  "(Get, 1)" -> {"(MapIndex, 1)";}
  "(MapIndex, 1)" -> {"(getDelegate, 0)";}
  "(String, 0)" -> {"(getDelegate, 0)";}
  "(countSparseEntries, 1)" -> {"(timeoutFlush, 1)";"(run, 0)";}
  "(Int64, 0)" -> {"(run, 0)";}
  "(Run, 1)" -> {"(extractUser, 1)";}
  "(GetUserInfo, 1)" -> {"(GetUserInfoContext, 2)";}
  "(NewRESTMapper, 2)" -> {"(output, 5)";"(MessageReceived, 3)";"(backup, 1)";"(configureTransport, 1)";"(Run, 1)";"(ManageConnection, 0)";}
  "(NewAggregate, 1)" -> {"(aggregate, 1)";}
  "(Print, 1)" -> {"(countSparseEntries, 1)";}
  "(NewWithDiskv, 1)" -> {"(processHeaders, 1)";"(configureTransport, 1)";"(runWithRecovery, 1)";"(processSettings, 1)";"(processWindowUpdate, 1)";}
  "(timeoutFlush, 1)" -> {}
  "(output, 5)" -> {"(AddInt64, 2)";}
  "(PutObjectRequest, 1)" -> {"(newRequest, 3)";}
  "(GetLabelValue, 2)" -> {"(Get, 2)";}
  "(Decode, 3)" -> {"(ConvertToVersion, 2)";}
  "(EncodeParameters, 2)" -> {"(Convert, 1)";}
  "(NewCacheRoundTripper, 2)" -> {"(NewWithDiskv, 1)";}
  "(transformResponse, 2)" -> {"(isTextResponse, 1)";}
  "(getStrongTypeN0, 1)" -> {}
}

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commit ID: 423073b0b98b293f76451da648b15901c60e65c4