Examples with LoadBalancer org.apache.camel.processor.loadbalancer.LoadBalancer used on opensource projects

Example 1 with LoadBalancer

use of org.apache.camel.processor.loadbalancer.LoadBalancer in project camel by apache.

the class LoadBalancerDefinition method createLoadBalancer.

/**
     * Factory method to create the load balancer from the loadBalancerTypeName
     */
protected LoadBalancer createLoadBalancer(RouteContext routeContext) {
    ObjectHelper.notEmpty(loadBalancerTypeName, "loadBalancerTypeName", this);
    LoadBalancer answer = null;
    if (loadBalancerTypeName != null) {
        Class<?> type = routeContext.getCamelContext().getClassResolver().resolveClass(loadBalancerTypeName, LoadBalancer.class);
        if (type == null) {
            throw new IllegalArgumentException("Cannot find class: " + loadBalancerTypeName + " in the classpath");
        }
        answer = (LoadBalancer) routeContext.getCamelContext().getInjector().newInstance(type);
        configureLoadBalancer(answer);
    }
    return answer;
}

Example 2 with LoadBalancer

use of org.apache.camel.processor.loadbalancer.LoadBalancer in project camel by apache.

the class LoadBalanceDefinition method createProcessor.

@Override
public Processor createProcessor(RouteContext routeContext) throws Exception {
    // the load balancer is stateful so we should only create it once in case its used from a context scoped error handler
    LoadBalancer loadBalancer = loadBalancerType.getLoadBalancer(routeContext);
    if (loadBalancer == null) {
        // then create it and reuse it
        loadBalancer = loadBalancerType.createLoadBalancer(routeContext);
        loadBalancerType.setLoadBalancer(loadBalancer);
        // some load balancer can only support a fixed number of outputs
        int max = loadBalancerType.getMaximumNumberOfOutputs();
        int size = getOutputs().size();
        if (size > max) {
            throw new IllegalArgumentException("To many outputs configured on " + loadBalancerType + ": " + size + " > " + max);
        }
        for (ProcessorDefinition<?> processorType : getOutputs()) {
            // on Windows boxes or with IBM JDKs etc.
            if (LoadBalanceDefinition.class.isInstance(processorType)) {
                throw new IllegalArgumentException("Loadbalancer already configured to: " + loadBalancerType + ". Cannot set it to: " + processorType);
            }
            Processor processor = createProcessor(routeContext, processorType);
            processor = wrapChannel(routeContext, processor, processorType);
            loadBalancer.addProcessor(processor);
        }
    }
    Boolean inherit = inheritErrorHandler;
    if (loadBalancerType instanceof FailoverLoadBalancerDefinition) {
        // special for failover load balancer where you can configure it to not inherit error handler for its children
        // but the load balancer itself should inherit so Camels error handler can react afterwards
        inherit = true;
    }
    Processor target = wrapChannel(routeContext, loadBalancer, this, inherit);
    return target;
}

Example 3 with LoadBalancer

use of org.apache.camel.processor.loadbalancer.LoadBalancer in project camel by apache.

the class DefaultManagementObjectStrategy method getManagedObjectForProcessor.

@SuppressWarnings({ "deprecation", "unchecked" })
public Object getManagedObjectForProcessor(CamelContext context, Processor processor, ProcessorDefinition<?> definition, Route route) {
    ManagedProcessor answer = null;
    if (definition instanceof RecipientListDefinition) {
        // special for RecipientListDefinition, as the processor is wrapped in a pipeline as last
        Pipeline pipeline = (Pipeline) processor;
        Iterator<Processor> it = pipeline.getProcessors().iterator();
        while (it.hasNext()) {
            processor = it.next();
        }
    } else if (definition instanceof ThreadsDefinition) {
        // special for ThreadsDefinition, as the processor is wrapped in a pipeline as first
        Pipeline pipeline = (Pipeline) processor;
        Iterator<Processor> it = pipeline.getProcessors().iterator();
        processor = it.next();
    }
    // unwrap delegates as we want the real target processor
    Processor target = processor;
    while (target != null) {
        // skip error handlers
        if (target instanceof ErrorHandler) {
            return false;
        }
        if (target instanceof ConvertBodyProcessor) {
            answer = new ManagedConvertBody(context, (ConvertBodyProcessor) target, definition);
        } else if (target instanceof ChoiceProcessor) {
            answer = new ManagedChoice(context, (ChoiceProcessor) target, definition);
        } else if (target instanceof Delayer) {
            answer = new ManagedDelayer(context, (Delayer) target, definition);
        } else if (target instanceof Throttler) {
            answer = new ManagedThrottler(context, (Throttler) target, definition);
        } else if (target instanceof DynamicRouter) {
            answer = new ManagedDynamicRouter(context, (DynamicRouter) target, (org.apache.camel.model.DynamicRouterDefinition) definition);
        } else if (target instanceof RoutingSlip) {
            answer = new ManagedRoutingSlip(context, (RoutingSlip) target, (org.apache.camel.model.RoutingSlipDefinition) definition);
        } else if (target instanceof FilterProcessor) {
            answer = new ManagedFilter(context, (FilterProcessor) target, (ExpressionNode) definition);
        } else if (target instanceof LogProcessor) {
            answer = new ManagedLog(context, (LogProcessor) target, definition);
        } else if (target instanceof LoopProcessor) {
            answer = new ManagedLoop(context, (LoopProcessor) target, (org.apache.camel.model.LoopDefinition) definition);
        } else if (target instanceof MarshalProcessor) {
            answer = new ManagedMarshal(context, (MarshalProcessor) target, (org.apache.camel.model.MarshalDefinition) definition);
        } else if (target instanceof UnmarshalProcessor) {
            answer = new ManagedUnmarshal(context, (UnmarshalProcessor) target, (org.apache.camel.model.UnmarshalDefinition) definition);
        } else if (target instanceof CircuitBreakerLoadBalancer) {
            answer = new ManagedCircuitBreakerLoadBalancer(context, (CircuitBreakerLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof FailOverLoadBalancer) {
            answer = new ManagedFailoverLoadBalancer(context, (FailOverLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof RandomLoadBalancer) {
            answer = new ManagedRandomLoadBalancer(context, (RandomLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof RoundRobinLoadBalancer) {
            answer = new ManagedRoundRobinLoadBalancer(context, (RoundRobinLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof StickyLoadBalancer) {
            answer = new ManagedStickyLoadBalancer(context, (StickyLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof TopicLoadBalancer) {
            answer = new ManagedTopicLoadBalancer(context, (TopicLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof WeightedLoadBalancer) {
            answer = new ManagedWeightedLoadBalancer(context, (WeightedLoadBalancer) target, (org.apache.camel.model.LoadBalanceDefinition) definition);
        } else if (target instanceof RecipientList) {
            answer = new ManagedRecipientList(context, (RecipientList) target, (RecipientListDefinition) definition);
        } else if (target instanceof Splitter) {
            answer = new ManagedSplitter(context, (Splitter) target, (org.apache.camel.model.SplitDefinition) definition);
        } else if (target instanceof MulticastProcessor) {
            answer = new ManagedMulticast(context, (MulticastProcessor) target, definition);
        } else if (target instanceof SamplingThrottler) {
            answer = new ManagedSamplingThrottler(context, (SamplingThrottler) target, definition);
        } else if (target instanceof Resequencer) {
            answer = new ManagedResequencer(context, (Resequencer) target, definition);
        } else if (target instanceof RollbackProcessor) {
            answer = new ManagedRollback(context, (RollbackProcessor) target, definition);
        } else if (target instanceof StreamResequencer) {
            answer = new ManagedResequencer(context, (StreamResequencer) target, definition);
        } else if (target instanceof SetBodyProcessor) {
            answer = new ManagedSetBody(context, (SetBodyProcessor) target, (org.apache.camel.model.SetBodyDefinition) definition);
        } else if (target instanceof RemoveHeaderProcessor) {
            answer = new ManagedRemoveHeader(context, (RemoveHeaderProcessor) target, definition);
        } else if (target instanceof RemoveHeadersProcessor) {
            answer = new ManagedRemoveHeaders(context, (RemoveHeadersProcessor) target, definition);
        } else if (target instanceof SetHeaderProcessor) {
            answer = new ManagedSetHeader(context, (SetHeaderProcessor) target, (org.apache.camel.model.SetHeaderDefinition) definition);
        } else if (target instanceof RemovePropertyProcessor) {
            answer = new ManagedRemoveProperty(context, (RemovePropertyProcessor) target, definition);
        } else if (target instanceof RemovePropertiesProcessor) {
            answer = new ManagedRemoveProperties(context, (RemovePropertiesProcessor) target, definition);
        } else if (target instanceof SetPropertyProcessor) {
            answer = new ManagedSetProperty(context, (SetPropertyProcessor) target, (org.apache.camel.model.SetPropertyDefinition) definition);
        } else if (target instanceof ExchangePatternProcessor) {
            answer = new ManagedSetExchangePattern(context, (ExchangePatternProcessor) target, definition);
        } else if (target instanceof ScriptProcessor) {
            answer = new ManagedScript(context, (ScriptProcessor) target, (org.apache.camel.model.ScriptDefinition) definition);
        } else if (target instanceof StopProcessor) {
            answer = new ManagedStop(context, (StopProcessor) target, definition);
        } else if (target instanceof ThreadsProcessor) {
            answer = new ManagedThreads(context, (ThreadsProcessor) target, definition);
        } else if (target instanceof ThrowExceptionProcessor) {
            answer = new ManagedThrowException(context, (ThrowExceptionProcessor) target, definition);
        } else if (target instanceof TransformProcessor) {
            answer = new ManagedTransformer(context, (TransformProcessor) target, (org.apache.camel.model.TransformDefinition) definition);
        } else if (target instanceof PredicateValidatingProcessor) {
            answer = new ManagedValidate(context, (PredicateValidatingProcessor) target, (org.apache.camel.model.ValidateDefinition) definition);
        } else if (target instanceof WireTapProcessor) {
            answer = new ManagedWireTapProcessor(context, (WireTapProcessor) target, definition);
        } else if (target instanceof SendDynamicProcessor) {
            answer = new ManagedSendDynamicProcessor(context, (SendDynamicProcessor) target, definition);
        } else if (target instanceof SendProcessor) {
            SendProcessor sp = (SendProcessor) target;
            // special for sending to throughput logger
            if (sp.getDestination() instanceof LogEndpoint) {
                LogEndpoint le = (LogEndpoint) sp.getDestination();
                if (le.getLogger() instanceof ThroughputLogger) {
                    ThroughputLogger tl = (ThroughputLogger) le.getLogger();
                    answer = new ManagedThroughputLogger(context, tl, definition);
                }
            }
            // regular send processor
            if (answer == null) {
                answer = new ManagedSendProcessor(context, (SendProcessor) target, definition);
            }
        } else if (target instanceof BeanProcessor) {
            answer = new ManagedBeanProcessor(context, (BeanProcessor) target, definition);
        } else if (target instanceof IdempotentConsumer) {
            answer = new ManagedIdempotentConsumer(context, (IdempotentConsumer) target, (org.apache.camel.model.IdempotentConsumerDefinition) definition);
        } else if (target instanceof AggregateProcessor) {
            answer = new ManagedAggregateProcessor(context, (AggregateProcessor) target, (org.apache.camel.model.AggregateDefinition) definition);
        } else if (target instanceof Enricher) {
            answer = new ManagedEnricher(context, (Enricher) target, (org.apache.camel.model.EnrichDefinition) definition);
        } else if (target instanceof PollEnricher) {
            answer = new ManagedPollEnricher(context, (PollEnricher) target, (org.apache.camel.model.PollEnrichDefinition) definition);
        } else if (target instanceof org.apache.camel.spi.ManagementAware) {
            return ((org.apache.camel.spi.ManagementAware<Processor>) target).getManagedObject(processor);
        }
        // special for custom load balancer
        if (definition instanceof LoadBalanceDefinition) {
            LoadBalanceDefinition lb = (LoadBalanceDefinition) definition;
            if (lb.getLoadBalancerType() instanceof CustomLoadBalancerDefinition) {
                answer = new ManagedCustomLoadBalancer(context, (LoadBalancer) target, (LoadBalanceDefinition) definition);
            }
        }
        if (answer != null) {
            // break out as we found an answer
            break;
        }
        // no answer yet, so unwrap any delegates and try again
        if (target instanceof DelegateProcessor) {
            target = ((DelegateProcessor) target).getProcessor();
        } else {
            // no delegate so we dont have any target to try next
            break;
        }
    }
    if (answer == null && definition instanceof ProcessDefinition) {
        answer = new ManagedProcess(context, target, (ProcessDefinition) definition);
    } else if (answer == null) {
        // fallback to a generic processor
        answer = new ManagedProcessor(context, target, definition);
    }
    answer.setRoute(route);
    answer.init(context.getManagementStrategy());
    return answer;
}

Example 4 with LoadBalancer

use of org.apache.camel.processor.loadbalancer.LoadBalancer in project camel by apache.

the class QuartzEndpoint method onJobExecute.

/**
     * This method is invoked when a Quartz job is fired.
     *
     * @param jobExecutionContext the Quartz Job context
     */
public void onJobExecute(final JobExecutionContext jobExecutionContext) throws JobExecutionException {
    boolean run = true;
    LoadBalancer balancer = getLoadBalancer();
    if (balancer instanceof ServiceSupport) {
        run = ((ServiceSupport) balancer).isRunAllowed();
    }
    if (!run) {
        // quartz scheduler could potential trigger during a route has been shutdown
        LOG.warn("Cannot execute Quartz Job with context: " + jobExecutionContext + " because processor is not started: " + balancer);
        return;
    }
    LOG.debug("Firing Quartz Job with context: {}", jobExecutionContext);
    Exchange exchange = createExchange(jobExecutionContext);
    try {
        balancer.process(exchange);
        if (exchange.getException() != null) {
            // propagate the exception back to Quartz
            throw new JobExecutionException(exchange.getException());
        }
    } catch (Exception e) {
        // log the error
        LOG.error(CamelExchangeException.createExceptionMessage("Error processing exchange", exchange, e));
        // and rethrow to let quartz handle it
        if (e instanceof JobExecutionException) {
            throw (JobExecutionException) e;
        }
        throw new JobExecutionException(e);
    }
}

Example 5 with LoadBalancer

use of org.apache.camel.processor.loadbalancer.LoadBalancer in project camel by apache.

the class RandomLoadBalanceJavaDSLBuilderTest method navigateDefinition.

private void navigateDefinition(ProcessorDefinition<?> def, StringBuilder sb) {
    // must do this ugly cast to avoid compiler error on HP-UX
    ProcessorDefinition<?> defn = (ProcessorDefinition<?>) def;
    if (defn instanceof LoadBalanceDefinition) {
        sb.append(".loadBalance()");
        LoadBalanceDefinition lbd = (LoadBalanceDefinition) defn;
        LoadBalancer balancer = lbd.getLoadBalancerType().getLoadBalancer(null);
        if (balancer instanceof RandomLoadBalancer) {
            sb.append(".random()");
        }
    }
    if (defn instanceof SendDefinition) {
        SendDefinition<?> send = (SendDefinition<?>) defn;
        sb.append(".to(\"" + send.getUri() + "\")");
    }
    List<ProcessorDefinition<?>> children = defn.getOutputs();
    if (children == null || children.isEmpty()) {
        return;
    }
    for (ProcessorDefinition<?> child : children) {
        navigateDefinition(child, sb);
    }
}