private ProgressEvent handleCanaryInStateReadyOrStopped()

in aws-synthetics-canary/src/main/java/com/amazon/synthetics/canary/UpdateHandler.java [83:114]

• 21 lines of code
• 3 McCabe index (conditional complexity)

    private ProgressEvent<ResourceModel, CallbackContext> handleCanaryInStateReadyOrStopped(Canary canary) {
        log(String.format("Canary is in state %s.", canary.status().stateAsString()));

        // After an update, If canary is in READY or STOPPED state with stateReason message, it indicates that update has failed.
        // 1. If the canary was initially in READY or STOPPED state and there was an error during provisioning,
        // then it will be set to READY or STOPPED state again and the message
        // will be in the StateReason field.
        // 2. A canary initially in Running state can also be set to state STOPPED if it was a run once canary and update failed but meanwhile canary execution has come to an end.
        if (!Strings.isNullOrEmpty(canary.status().stateReason())) {
            log(String.format("Update failed: %s", canary.status().stateReason()));
            return ProgressEvent.failed(
                    model,
                    context,
                    HandlerErrorCode.GeneralServiceException,
                    canary.status().stateReason());
        }

        if (model.getStartCanaryAfterCreation()) {
            // There is a race condition here. We will get an exception if someone calls
            // DeleteCanary, StartCanary, or UpdateCanary before we call StartCanary.

            proxy.injectCredentialsAndInvokeV2(
                StartCanaryRequest.builder()
                    .name(canary.name())
                    .build(),
                syntheticsClient::startCanary);

            return waitingForCanaryStateTransition("Starting canary", MAX_RETRY_TIMES, "READY");
        } else {
            return ProgressEvent.defaultSuccessHandler(ModelHelper.constructModel(canary, model));
        }
    }