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#ifndef QPID_SYS_CLUSTERSAFE_H
#define QPID_SYS_CLUSTERSAFE_H
/*
*
* 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.
*
*/
#include "qpid/CommonImportExport.h"
namespace qpid {
namespace sys {
/**
* Assertion to add to code that modifies clustered state.
*
* In a non-clustered broker this is a no-op.
*
* In a clustered broker, checks that it is being called
* in a context where it is safe to modify clustered state.
* If not it aborts the process as this is a serious bug.
*
* This function is in the common library rather than the cluster
* library because it is called by code in the broker library.
*/
QPID_COMMON_EXTERN void assertClusterSafe();
/**
* In a non-clustered broker, returns true.
*
* In a clustered broker returns true if we are in a context where it
* is safe to modify cluster state.
*
* This function is in the common library rather than the cluster
* library because it is called by code in the broker library.
*/
QPID_COMMON_EXTERN bool isClusterSafe();
/**
* Mark a scope as cluster safe. Sets isClusterSafe in constructor and resets
* to previous value in destructor.
*/
class ClusterSafeScope {
public:
ClusterSafeScope();
~ClusterSafeScope();
private:
bool save;
};
/**
* Mark a scope as cluster unsafe. Clears isClusterSafe in constructor and resets
* to previous value in destructor.
*/
class ClusterUnsafeScope {
public:
QPID_COMMON_EXTERN ClusterUnsafeScope();
QPID_COMMON_EXTERN ~ClusterUnsafeScope();
private:
bool save;
};
/**
* Enable cluster-safe assertions. By default they are no-ops.
* Called by cluster code.
*/
void enableClusterSafe();
}} // namespace qpid::sys
#endif /*!QPID_SYS_CLUSTERSAFE_H*/
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