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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#ifndef qpid_broker_AsyncStore_h_
#define qpid_broker_AsyncStore_h_
// TODO: See if we can replace this with a forward declaration, but current definition of qpid::types::Variant::Map
// does not allow it. Using a local map<std::string, Variant> definition also precludes forward declaration.
#include "qpid/types/Variant.h" // qpid::types::Variant::Map
#include <stdint.h>
#include <string>
namespace qpid {
namespace broker {
// Defined by broker, implements qpid::messaging::Handle-type template to hide ref counting:
class BrokerContext;
// Subclassed by broker:
class DataSource {
public:
virtual ~DataSource();
virtual uint64_t getSize() = 0;
virtual void write(char* target) = 0;
};
// Defined by store, all implement qpid::messaging::Handle-type template to hide ref counting:
class ConfigHandle;
class QueueHandle;
class TxnHandle;
class EventHandle;
class MessageHandle;
class EnqueueHandle;
// Callback definition:
struct AsyncResult
{
int errNo; // 0 implies no error
std::string errMsg;
AsyncResult();
AsyncResult(const int errNo,
const std::string& errMsg);
void destroy();
};
typedef void (*ResultCallback)(const AsyncResult*, BrokerContext*);
// Subclassed by store:
class AsyncStore {
public:
AsyncStore();
virtual ~AsyncStore();
// Factory methods for creating handles
virtual TxnHandle createTxnHandle(const std::string& xid=std::string()) = 0;
virtual ConfigHandle createConfigHandle() = 0;
virtual QueueHandle createQueueHandle(const std::string& name, const qpid::types::Variant::Map& opts) = 0;
virtual EventHandle createEventHandle(QueueHandle&, const std::string& key=std::string()) = 0;
virtual MessageHandle createMessageHandle(const DataSource*) = 0;
virtual EnqueueHandle createEnqueueHandle(MessageHandle&, QueueHandle&) = 0;
// Store async interface
virtual void submitPrepare(TxnHandle&, ResultCallback, BrokerContext*) = 0; // Distributed txns only
virtual void submitCommit(TxnHandle&, ResultCallback, BrokerContext*) = 0;
virtual void submitAbort(TxnHandle&, ResultCallback, BrokerContext*) = 0;
virtual void submitCreate(ConfigHandle&, const DataSource*, ResultCallback, BrokerContext*) = 0;
virtual void submitDestroy(ConfigHandle&, ResultCallback, BrokerContext*) = 0;
virtual void submitCreate(QueueHandle&, const DataSource*, ResultCallback, BrokerContext*) = 0;
virtual void submitDestroy(QueueHandle&, ResultCallback, BrokerContext*) = 0;
virtual void submitFlush(QueueHandle&, ResultCallback, BrokerContext*) = 0;
virtual void submitCreate(EventHandle&, const DataSource*, ResultCallback, BrokerContext*) = 0;
virtual void submitCreate(EventHandle&, const DataSource*, TxnHandle&, ResultCallback, BrokerContext*) = 0;
virtual void submitDestroy(EventHandle&, ResultCallback, BrokerContext*) = 0;
virtual void submitDestroy(EventHandle&, TxnHandle&, ResultCallback, BrokerContext*) = 0;
virtual void submitEnqueue(EnqueueHandle&, ResultCallback, BrokerContext*) = 0;
virtual void submitEnqueue(EnqueueHandle&, TxnHandle&, ResultCallback, BrokerContext*) = 0;
virtual void submitDequeue(EnqueueHandle&, ResultCallback, BrokerContext*) = 0;
virtual void submitDequeue(EnqueueHandle&, TxnHandle&, ResultCallback, BrokerContext*) = 0;
// Legacy - Restore FTD message, is NOT async!
virtual int loadContent(MessageHandle&, QueueHandle&, char* data, uint64_t offset, const uint64_t length) = 0;
};
}} // namespace qpid::broker
#endif // qpid_broker_AsyncStore_h_
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