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71 lines
2.4 KiB
71 lines
2.4 KiB
13 years ago
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#ifndef _THRIFT_TQUEUINGASYNCPROCESSOR_H_
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#define _THRIFT_TQUEUINGASYNCPROCESSOR_H_ 1
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#include <tr1/functional>
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#include <boost/shared_ptr.hpp>
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#include "thrift/lib/cpp/TProcessor.h"
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#include "thrift/lib/cpp/async/TAsyncProcessor.h"
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#include "thrift/lib/cpp/async/TEventTask.h"
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#include "thrift/lib/cpp/concurrency/Exception.h"
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namespace apache { namespace thrift { namespace async {
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/**
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* Adapter to allow a TProcessor to be used as a TAsyncProcessor.
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*
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* Note: this is not intended for use outside of TEventConnection since the
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* callback mechanism used in TEventTask will invoke handleAsyncTaskComplete()
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* regardless of what is passed in as the cob.
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*
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* Uses a per-server task queue for all calls.
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*/
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class TQueuingAsyncProcessor : public TAsyncProcessor {
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public:
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TQueuingAsyncProcessor(
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boost::shared_ptr<apache::thrift::server::TProcessor> processor,
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boost::shared_ptr<apache::thrift::concurrency::ThreadManager> threadManager,
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int64_t taskExpireTime,
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TEventConnection* connection)
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: processor_(processor)
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, threadManager_(threadManager)
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, taskExpireTime_(taskExpireTime)
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, connection_(connection)
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{}
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virtual void process(
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std::tr1::function<void(bool success)> cob,
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boost::shared_ptr<apache::thrift::protocol::TProtocol> in,
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boost::shared_ptr<apache::thrift::protocol::TProtocol> out,
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TConnectionContext* context) {
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boost::shared_ptr<apache::thrift::concurrency::Runnable> task =
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boost::shared_ptr<apache::thrift::concurrency::Runnable>(
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new TEventTask(connection_));
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try {
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threadManager_->add(task, 0LL, taskExpireTime_);
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} catch (apache::thrift::concurrency::IllegalStateException & ise) {
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T_ERROR("IllegalStateException: TQueuingAsyncProcessor::process() %s",
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ise.what());
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// no task will be making a callback
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return cob(false);
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}
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}
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private:
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boost::shared_ptr<apache::thrift::server::TProcessor> processor_;
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/// For processing via thread pool
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boost::shared_ptr<apache::thrift::concurrency::ThreadManager> threadManager_;
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/// Time in milliseconds before an unperformed task expires (0 == infinite).
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int64_t taskExpireTime_;
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/// The worker that started us
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TEventConnection* connection_;
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};
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}}} // apache::thrift::async
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#endif // #ifndef _THRIFT_TQUEUINGASYNCPROCESSOR_H_
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