Examples with ThreadPoolRejectedPolicy org.apache.camel.ThreadPoolRejectedPolicy used on opensource projects

Example 1 with ThreadPoolRejectedPolicy

use of org.apache.camel.ThreadPoolRejectedPolicy in project camel by apache.

the class ThreadsDefinition method createProcessor.

@Override
public Processor createProcessor(RouteContext routeContext) throws Exception {
    // the threads name
    String name = getThreadName() != null ? getThreadName() : "Threads";
    // prefer any explicit configured executor service
    boolean shutdownThreadPool = ProcessorDefinitionHelper.willCreateNewThreadPool(routeContext, this, true);
    ExecutorService threadPool = ProcessorDefinitionHelper.getConfiguredExecutorService(routeContext, name, this, false);
    // resolve what rejected policy to use
    ThreadPoolRejectedPolicy policy = resolveRejectedPolicy(routeContext);
    if (policy == null) {
        if (callerRunsWhenRejected == null || callerRunsWhenRejected) {
            // should use caller runs by default if not configured
            policy = ThreadPoolRejectedPolicy.CallerRuns;
        } else {
            policy = ThreadPoolRejectedPolicy.Abort;
        }
    }
    log.debug("Using ThreadPoolRejectedPolicy: {}", policy);
    // if no explicit then create from the options
    if (threadPool == null) {
        ExecutorServiceManager manager = routeContext.getCamelContext().getExecutorServiceManager();
        // create the thread pool using a builder
        ThreadPoolProfile profile = new ThreadPoolProfileBuilder(name).poolSize(getPoolSize()).maxPoolSize(getMaxPoolSize()).keepAliveTime(getKeepAliveTime(), getTimeUnit()).maxQueueSize(getMaxQueueSize()).rejectedPolicy(policy).allowCoreThreadTimeOut(getAllowCoreThreadTimeOut()).build();
        threadPool = manager.newThreadPool(this, name, profile);
        shutdownThreadPool = true;
    } else {
        if (getThreadName() != null && !getThreadName().equals("Threads")) {
            throw new IllegalArgumentException("ThreadName and executorServiceRef options cannot be used together.");
        }
        if (getPoolSize() != null) {
            throw new IllegalArgumentException("PoolSize and executorServiceRef options cannot be used together.");
        }
        if (getMaxPoolSize() != null) {
            throw new IllegalArgumentException("MaxPoolSize and executorServiceRef options cannot be used together.");
        }
        if (getKeepAliveTime() != null) {
            throw new IllegalArgumentException("KeepAliveTime and executorServiceRef options cannot be used together.");
        }
        if (getTimeUnit() != null) {
            throw new IllegalArgumentException("TimeUnit and executorServiceRef options cannot be used together.");
        }
        if (getMaxQueueSize() != null) {
            throw new IllegalArgumentException("MaxQueueSize and executorServiceRef options cannot be used together.");
        }
        if (getRejectedPolicy() != null) {
            throw new IllegalArgumentException("RejectedPolicy and executorServiceRef options cannot be used together.");
        }
        if (getAllowCoreThreadTimeOut() != null) {
            throw new IllegalArgumentException("AllowCoreThreadTimeOut and executorServiceRef options cannot be used together.");
        }
    }
    ThreadsProcessor thread = new ThreadsProcessor(routeContext.getCamelContext(), threadPool, shutdownThreadPool, policy);
    List<Processor> pipe = new ArrayList<Processor>(2);
    pipe.add(thread);
    pipe.add(createChildProcessor(routeContext, true));
    // (recipient list definition does this as well)
    return new Pipeline(routeContext.getCamelContext(), pipe) {

        @Override
        public String toString() {
            return "Threads[" + getOutputs() + "]";
        }
    };
}