Java TopologyContext.getThisTaskId方法代碼示例

import backtype.storm.task.TopologyContext; //導入方法依賴的package包/類
public void prepare(Map conf, TopologyContext ctx, OutputCollector collector) {
	
	this.collector = collector;
	this.myId = ctx.getThisComponentId() + "-" + ctx.getThisTaskId();
	
	this.summary = new Summary();
	
	this.publisher = new ZkPublisher();
	try {
		this.publisher.init(conf);
	} catch (Exception e) {
		throw new RuntimeException(e);
	}
	
	this.lastPublishedTimestamp = 0;
}
 

import backtype.storm.task.TopologyContext; //導入方法依賴的package包/類
@Override
public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
    MessageDigest md;
    int counter;

    this.thisTaskIndex = context.getThisTaskIndex();
    this.numSpouts = context.getComponentTasks(context.getThisComponentId()).size();
    counter = 0;

    try {
        md = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException("Couldn't find MD5 algorithm.", e);
    }

    // we want to create a message that hashes to exacly one of the following spouts. As there are the same number
    // of bolts on each level as there are spouts, we just keep looking until we find a uuid whose hash code would
    // be assigned to the id of this spout (if it were a bolt).
    do {
        if (++counter > 1000 * 1000) {
            throw new RuntimeException("Unable to generate required UUID in 1 mio tries.");
        }
        byte[] bytes = md.digest(UUID.randomUUID().toString().getBytes());
        this.uuid = new String(bytes);
    } while (this.uuid.hashCode() % this.numSpouts != this.thisTaskIndex);

    this.collector = collector;

    if (!this.disableAniello) {
        // this will create/configure the worker monitor once per worker
        WorkerMonitor.getInstance().setContextInfo(context);

        // this object is used in the emit/execute method to compute the number of inter-node messages
        this.taskMonitor = new TaskMonitor(context.getThisTaskId());
    }
}
 

import backtype.storm.task.TopologyContext; //導入方法依賴的package包/類
@Override
public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {
    this.collector = collector;

    if (!this.disableAniello) {
        // this will create/configure the worker monitor once per worker
        WorkerMonitor.getInstance().setContextInfo(context);

        // this object is used in the emit/execute method to compute the number of inter-node messages
        this.taskMonitor = new TaskMonitor(context.getThisTaskId());
    }
}
 

import backtype.storm.task.TopologyContext; //導入方法依賴的package包/類
@Override
public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {
    // this object is used in the emit/execute method to compute the number of inter-node messages
    this.taskMonitor = new TaskMonitor(context.getThisTaskId());

    this.collector = collector;

    if (!this.disableAniello) {
        // this will create/configure the worker monitor once per worker
        WorkerMonitor.getInstance().setContextInfo(context);

        // this object is used in the emit/execute method to compute the number of inter-node messages
        this.taskMonitor = new TaskMonitor(context.getThisTaskId());
    }
}
 

import backtype.storm.task.TopologyContext; //導入方法依賴的package包/類
@Override
public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
    this.collector = collector;
    this.rnd = new Random();

    if (!this.disableAniello) {
        // this will create/configure the worker monitor once per worker
        WorkerMonitor.getInstance().setContextInfo(context);

        // this object is used in the emit/execute method to compute the number of inter-node messages
        this.taskMonitor = new TaskMonitor(context.getThisTaskId());
    }
}
 

import backtype.storm.task.TopologyContext; //導入方法依賴的package包/類
public void prepare(Map conf, TopologyContext ctx, OutputCollector collector) {
	this.collector = collector;
	this.myId = ctx.getThisComponentId() + "-" + ctx.getThisTaskId();
	
	this.sentimentData = (Map<String, Long>) conf.get("sentimentData");
	if (this.sentimentData != null) {
		LOG.info("SentiCalcBolt " + myId + " has received sentimentData");
	}
}
 

import backtype.storm.task.TopologyContext; //導入方法依賴的package包/類
@SuppressWarnings("unchecked")
@Override
public void prepare(Map conf, TopologyContext topologyContext) {
    this.componentId = topologyContext.getThisComponentId();
    this.taskId = topologyContext.getThisTaskId();
    try {
        this.host = Utils.localHostname();
    } catch (UnknownHostException e) {
        throw new RuntimeException(e);
    }
}
 

import backtype.storm.task.TopologyContext; //導入方法依賴的package包/類
@Override
public void prepare(Map conf, final TopologyContext context) {
    if (context.getThisTaskId() < 0) {
        LOG.debug("Skipping installation of metrics hook for negative task id {}", context.getThisTaskId());
    } else {
        int intervalSecs;

        LOG.info("Initializing metrics hook for task {}", context.getThisTaskId());

        this.sendgraphRef = new AtomicReference<>();

        intervalSecs = getConfiguredSchedulingIntervalSecs(conf);

        /*
        * We register one metric for each task. The full send graph will then be built up in the metric
        * consumer.
        */
        context.registerMetric(METRIC_EMITTED_MESSAGES, new IMetric() {
            @Override
            public Object getValueAndReset() {
                Map<Integer, AtomicLong> currentValue;

                // don't reset sendgraph! todo: make this configurable
                // currentValue = SchedulingMetricsCollectionHook.this.sendgraphRef.getAndSet(createEmptySendgraphMap());
                currentValue = SchedulingMetricsCollectionHook.this.sendgraphRef.get();

                LOG.trace("Reset values for task {} and returning: {}", context.getThisTaskId(), currentValue.toString());

                return currentValue;
            }

        }, intervalSecs); // call every n seconds

        // put an empty send graph object.
        this.sendgraphRef.compareAndSet(null, createEmptySendgraphMap());

        // put a zero weight for the task at hand, so we have a complete send graph in the metrics. Without this
        // step, tasks that don't send or receive anything (for example the metrics-consumers) would not be
        // contained in the sendgraph. todo: change the schedule format to contain task=>partition assignements, so
        // we could do away with this workaround
        this.sendgraphRef.get().get(context.getThisTaskId()).set(0);
    }
}
 

import backtype.storm.task.TopologyContext; //導入方法依賴的package包/類
@Override
public void prepare(Map conf, TopologyContext topologyContext) {
    this.componentId = topologyContext.getThisComponentId();
    this.taskId = topologyContext.getThisTaskId();
}