in trogdor/src/main/java/org/apache/kafka/trogdor/coordinator/CoordinatorClient.java [226:467]
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) {
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.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);
}
}
}