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// **********************************************************************
//
// Copyright (c) 2003-2017 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <Ice/RetryQueue.h>
#include <Ice/OutgoingAsync.h>
#include <Ice/LocalException.h>
#include <Ice/Instance.h>
#include <Ice/TraceLevels.h>
#include <Ice/LoggerUtil.h>
using namespace std;
using namespace Ice;
using namespace IceInternal;
IceUtil::Shared* IceInternal::upCast(RetryQueue* p) { return p; }
IceInternal::RetryTask::RetryTask(const InstancePtr& instance,
const RetryQueuePtr& queue,
const ProxyOutgoingAsyncBasePtr& outAsync) :
_instance(instance),
_queue(queue),
_outAsync(outAsync)
{
}
void
IceInternal::RetryTask::runTimerTask()
{
_outAsync->retry(); // Retry again the invocation.
//
// NOTE: this must be called last, destroy() blocks until all task
// are removed to prevent the client thread pool to be destroyed
// (we still need the client thread pool at this point to call
// exception callbacks with CommunicatorDestroyedException).
//
_queue->remove(this);
}
void
IceInternal::RetryTask::requestCanceled(OutgoingBase*, const Ice::LocalException&)
{
assert(false);
}
void
IceInternal::RetryTask::asyncRequestCanceled(const OutgoingAsyncBasePtr& outAsync, const Ice::LocalException& ex)
{
if(_queue->cancel(this))
{
if(_instance->traceLevels()->retry >= 1)
{
Trace out(_instance->initializationData().logger, _instance->traceLevels()->retryCat);
out << "operation retry canceled\n" << ex;
}
if(_outAsync->completed(ex))
{
_outAsync->invokeCompletedAsync();
}
}
}
void
IceInternal::RetryTask::destroy()
{
try
{
_outAsync->abort(CommunicatorDestroyedException(__FILE__, __LINE__));
}
catch(const CommunicatorDestroyedException&)
{
// Abort can throw if there's no callback, ignore.
}
}
bool
IceInternal::RetryTask::operator<(const RetryTask& rhs) const
{
return this < &rhs;
}
IceInternal::RetryQueue::RetryQueue(const InstancePtr& instance) : _instance(instance)
{
}
void
IceInternal::RetryQueue::add(const ProxyOutgoingAsyncBasePtr& out, int interval)
{
Lock sync(*this);
if(!_instance)
{
throw CommunicatorDestroyedException(__FILE__, __LINE__);
}
RetryTaskPtr task = new RetryTask(_instance, this, out);
out->cancelable(task); // This will throw if the request is canceled.
try
{
_instance->timer()->schedule(task, IceUtil::Time::milliSeconds(interval));
}
catch(const IceUtil::IllegalArgumentException&) // Expected if the communicator destroyed the timer.
{
throw CommunicatorDestroyedException(__FILE__, __LINE__);
}
_requests.insert(task);
}
void
IceInternal::RetryQueue::destroy()
{
Lock sync(*this);
assert(_instance);
set<RetryTaskPtr>::iterator p = _requests.begin();
while(p != _requests.end())
{
if(_instance->timer()->cancel(*p))
{
(*p)->destroy();
_requests.erase(p++);
}
else
{
++p;
}
}
_instance = 0;
while(!_requests.empty())
{
wait();
}
}
void
IceInternal::RetryQueue::remove(const RetryTaskPtr& task)
{
Lock sync(*this);
assert(_requests.find(task) != _requests.end());
_requests.erase(task);
if(!_instance && _requests.empty())
{
notify(); // If we are destroying the queue, destroy is probably waiting on the queue to be empty.
}
}
bool
IceInternal::RetryQueue::cancel(const RetryTaskPtr& task)
{
Lock sync(*this);
if(_requests.erase(task) > 0)
{
if(!_instance && _requests.empty())
{
notify(); // If we are destroying the queue, destroy is probably waiting on the queue to be empty.
}
return _instance->timer()->cancel(task);
}
return false;
}
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