Examples with RequestConflictException org.apache.kafka.trogdor.rest.RequestConflictException used on opensource projects

Example 1 with RequestConflictException

use of org.apache.kafka.trogdor.rest.RequestConflictException in project kafka by apache.

the class CoordinatorClient method main.

public static void main(String[] args) throws Exception {
    ArgumentParser rootParser = ArgumentParsers.newArgumentParser("trogdor-coordinator-client").description("The Trogdor coordinator client.");
    Subparsers subParsers = rootParser.addSubparsers().dest("command");
    Subparser uptimeParser = subParsers.addParser("uptime").help("Get the coordinator uptime.");
    addTargetArgument(uptimeParser);
    addJsonArgument(uptimeParser);
    Subparser statusParser = subParsers.addParser("status").help("Get the coordinator status.");
    addTargetArgument(statusParser);
    addJsonArgument(statusParser);
    Subparser showTaskParser = subParsers.addParser("showTask").help("Show a coordinator task.");
    addTargetArgument(showTaskParser);
    addJsonArgument(showTaskParser);
    showTaskParser.addArgument("--id", "-i").action(store()).required(true).type(String.class).dest("taskId").metavar("TASK_ID").help("The task ID to show.");
    showTaskParser.addArgument("--verbose", "-v").action(storeTrue()).dest("verbose").metavar("VERBOSE").help("Print out everything.");
    showTaskParser.addArgument("--show-status", "-S").action(storeTrue()).dest("showStatus").metavar("SHOW_STATUS").help("Show the task status.");
    Subparser showTasksParser = subParsers.addParser("showTasks").help("Show many coordinator tasks.  By default, all tasks are shown, but " + "command-line options can be specified as filters.");
    addTargetArgument(showTasksParser);
    addJsonArgument(showTasksParser);
    MutuallyExclusiveGroup idGroup = showTasksParser.addMutuallyExclusiveGroup();
    idGroup.addArgument("--id", "-i").action(append()).type(String.class).dest("taskIds").metavar("TASK_IDS").help("Show only this task ID.  This option may be specified multiple times.");
    idGroup.addArgument("--id-pattern").action(store()).type(String.class).dest("taskIdPattern").metavar("TASK_ID_PATTERN").help("Only display tasks which match the given ID pattern.");
    showTasksParser.addArgument("--state", "-s").type(TaskStateType.class).dest("taskStateType").metavar("TASK_STATE_TYPE").help("Show only tasks in this state.");
    Subparser createTaskParser = subParsers.addParser("createTask").help("Create a new task.");
    addTargetArgument(createTaskParser);
    createTaskParser.addArgument("--id", "-i").action(store()).required(true).type(String.class).dest("taskId").metavar("TASK_ID").help("The task ID to create.");
    createTaskParser.addArgument("--spec", "-s").action(store()).required(true).type(String.class).dest("taskSpec").metavar("TASK_SPEC").help("The task spec to create, or a path to a file containing the task spec.");
    Subparser stopTaskParser = subParsers.addParser("stopTask").help("Stop a task.");
    addTargetArgument(stopTaskParser);
    stopTaskParser.addArgument("--id", "-i").action(store()).required(true).type(String.class).dest("taskId").metavar("TASK_ID").help("The task ID to create.");
    Subparser destroyTaskParser = subParsers.addParser("destroyTask").help("Destroy a task.");
    addTargetArgument(destroyTaskParser);
    destroyTaskParser.addArgument("--id", "-i").action(store()).required(true).type(String.class).dest("taskId").metavar("TASK_ID").help("The task ID to destroy.");
    Subparser shutdownParser = subParsers.addParser("shutdown").help("Shut down the coordinator.");
    addTargetArgument(shutdownParser);
    Namespace res = rootParser.parseArgsOrFail(args);
    String target = res.getString("target");
    CoordinatorClient client = new Builder().maxTries(3).target(target).build();
    ZoneOffset localOffset = OffsetDateTime.now().getOffset();
    switch(res.getString("command")) {
        case "uptime":
            {
                UptimeResponse uptime = client.uptime();
                if (res.getBoolean("json")) {
                    System.out.println(JsonUtil.toJsonString(uptime));
                } else {
                    System.out.printf("Coordinator is running at %s.%n", target);
                    System.out.printf("\tStart time: %s%n", dateString(uptime.serverStartMs(), localOffset));
                    System.out.printf("\tCurrent server time: %s%n", dateString(uptime.nowMs(), localOffset));
                    System.out.printf("\tUptime: %s%n", durationString(uptime.nowMs() - uptime.serverStartMs()));
                }
                break;
            }
        case "status":
            {
                CoordinatorStatusResponse response = client.status();
                if (res.getBoolean("json")) {
                    System.out.println(JsonUtil.toJsonString(response));
                } else {
                    System.out.printf("Coordinator is running at %s.%n", target);
                    System.out.printf("\tStart time: %s%n", dateString(response.serverStartMs(), localOffset));
                }
                break;
            }
        case "showTask":
            {
                String taskId = res.getString("taskId");
                TaskRequest req = new TaskRequest(taskId);
                TaskState taskState = null;
                try {
                    taskState = client.task(req);
                } catch (NotFoundException e) {
                    System.out.printf("Task %s was not found.%n", taskId);
                    Exit.exit(1);
                }
                if (res.getBoolean("json")) {
                    System.out.println(JsonUtil.toJsonString(taskState));
                } else {
                    System.out.printf("Task %s of type %s is %s. %s%n", taskId, taskState.spec().getClass().getCanonicalName(), taskState.stateType(), prettyPrintTaskInfo(taskState, localOffset));
                    if (taskState instanceof TaskDone) {
                        TaskDone taskDone = (TaskDone) taskState;
                        if ((taskDone.error() != null) && (!taskDone.error().isEmpty())) {
                            System.out.printf("Error: %s%n", taskDone.error());
                        }
                    }
                    if (res.getBoolean("verbose")) {
                        System.out.printf("Spec: %s%n%n", JsonUtil.toPrettyJsonString(taskState.spec()));
                    }
                    if (res.getBoolean("verbose") || res.getBoolean("showStatus")) {
                        System.out.printf("Status: %s%n%n", JsonUtil.toPrettyJsonString(taskState.status()));
                    }
                }
                break;
            }
        case "showTasks":
            {
                TaskStateType taskStateType = res.<TaskStateType>get("taskStateType");
                List<String> taskIds = new ArrayList<>();
                Pattern taskIdPattern = null;
                if (res.getList("taskIds") != null) {
                    for (Object taskId : res.getList("taskIds")) {
                        taskIds.add((String) taskId);
                    }
                } else if (res.getString("taskIdPattern") != null) {
                    try {
                        taskIdPattern = Pattern.compile(res.getString("taskIdPattern"));
                    } catch (PatternSyntaxException e) {
                        System.out.println("Invalid task ID regular expression " + res.getString("taskIdPattern"));
                        e.printStackTrace();
                        Exit.exit(1);
                    }
                }
                TasksRequest req = new TasksRequest(taskIds, 0, 0, 0, 0, Optional.ofNullable(taskStateType));
                TasksResponse response = client.tasks(req);
                if (taskIdPattern != null) {
                    TreeMap<String, TaskState> filteredTasks = new TreeMap<>();
                    for (Map.Entry<String, TaskState> entry : response.tasks().entrySet()) {
                        if (taskIdPattern.matcher(entry.getKey()).matches()) {
                            filteredTasks.put(entry.getKey(), entry.getValue());
                        }
                    }
                    response = new TasksResponse(filteredTasks);
                }
                if (res.getBoolean("json")) {
                    System.out.println(JsonUtil.toJsonString(response));
                } else {
                    System.out.println(prettyPrintTasksResponse(response, localOffset));
                }
                if (response.tasks().isEmpty()) {
                    Exit.exit(1);
                }
                break;
            }
        case "createTask":
            {
                String taskId = res.getString("taskId");
                TaskSpec taskSpec = JsonUtil.objectFromCommandLineArgument(res.getString("taskSpec"), TaskSpec.class);
                CreateTaskRequest req = new CreateTaskRequest(taskId, taskSpec);
                try {
                    client.createTask(req);
                    System.out.printf("Sent CreateTaskRequest for task %s.%n", req.id());
                } catch (RequestConflictException rce) {
                    System.out.printf("CreateTaskRequest for task %s got a 409 status code - " + "a task with the same ID but a different specification already exists.%nException: %s%n", req.id(), rce.getMessage());
                    Exit.exit(1);
                }
                break;
            }
        case "stopTask":
            {
                String taskId = res.getString("taskId");
                StopTaskRequest req = new StopTaskRequest(taskId);
                client.stopTask(req);
                System.out.printf("Sent StopTaskRequest for task %s.%n", taskId);
                break;
            }
        case "destroyTask":
            {
                String taskId = res.getString("taskId");
                DestroyTaskRequest req = new DestroyTaskRequest(taskId);
                client.destroyTask(req);
                System.out.printf("Sent DestroyTaskRequest for task %s.%n", taskId);
                break;
            }
        case "shutdown":
            {
                client.shutdown();
                System.out.println("Sent ShutdownRequest.");
                break;
            }
        default:
            {
                System.out.println("You must choose an action. Type --help for help.");
                Exit.exit(1);
            }
    }
}

Example 2 with RequestConflictException

use of org.apache.kafka.trogdor.rest.RequestConflictException in project kafka by apache.

the class WorkerManager method createWorker.

public KafkaFuture<String> createWorker(long workerId, String taskId, TaskSpec spec) throws Throwable {
    try (ShutdownManager.Reference ref = shutdownManager.takeReference()) {
        final Worker worker = stateChangeExecutor.submit(new CreateWorker(workerId, taskId, spec, time.milliseconds())).get();
        if (worker.doneFuture != null) {
            log.info("{}: Ignoring request to create worker {}, because there is already " + "a worker with that id.", nodeName, workerId);
            return worker.doneFuture;
        }
        worker.doneFuture = new KafkaFutureImpl<>();
        if (worker.spec.endMs() <= time.milliseconds()) {
            log.info("{}: Will not run worker {} as it has expired.", nodeName, worker);
            stateChangeExecutor.submit(new HandleWorkerHalting(worker, "worker expired", true));
            return worker.doneFuture;
        }
        KafkaFutureImpl<String> haltFuture = new KafkaFutureImpl<>();
        haltFuture.thenApply((KafkaFuture.BaseFunction<String, Void>) errorString -> {
            if (errorString == null)
                errorString = "";
            if (errorString.isEmpty()) {
                log.info("{}: Worker {} is halting.", nodeName, worker);
            } else {
                log.info("{}: Worker {} is halting with error {}", nodeName, worker, errorString);
            }
            stateChangeExecutor.submit(new HandleWorkerHalting(worker, errorString, false));
            return null;
        });
        try {
            worker.taskWorker.start(platform, worker.status, haltFuture);
        } catch (Exception e) {
            log.info("{}: Worker {} start() exception", nodeName, worker, e);
            stateChangeExecutor.submit(new HandleWorkerHalting(worker, "worker.start() exception: " + Utils.stackTrace(e), true));
        }
        stateChangeExecutor.submit(new FinishCreatingWorker(worker));
        return worker.doneFuture;
    } catch (ExecutionException e) {
        if (e.getCause() instanceof RequestConflictException) {
            log.info("{}: request conflict while creating worker {} for task {} with spec {}.", nodeName, workerId, taskId, spec);
        } else {
            log.info("{}: Error creating worker {} for task {} with spec {}", nodeName, workerId, taskId, spec, e);
        }
        throw e.getCause();
    }
}