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/* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation, nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef __SYSTEM_STATUS_OSOBSERVER__
#define __SYSTEM_STATUS_OSOBSERVER__
#include <cinttypes>
#include <string>
#include <list>
#include <map>
#include <new>
#include <vector>
#include <MsgTask.h>
#include <DataItemId.h>
#include <IOsObserver.h>
#include <platform_lib_log_util.h>
namespace loc_core
{
/******************************************************************************
SystemStatusOsObserver
******************************************************************************/
using namespace std;
// Forward Declarations
class IDataItemCore;
template<typename CT, typename DIT> class IClientIndex;
template<typename CT, typename DIT> class IDataItemIndex;
struct SystemContext {
IDataItemSubscription* mSubscriptionObj;
IFrameworkActionReq* mFrameworkActionReqObj;
const MsgTask* mMsgTask;
inline SystemContext() :
mSubscriptionObj(NULL),
mFrameworkActionReqObj(NULL),
mMsgTask(NULL) {}
};
typedef map<IDataItemObserver*, list<DataItemId>> ObserverReqCache;
// Clients wanting to get data from OS/Framework would need to
// subscribe with OSObserver using IDataItemSubscription interface.
// Such clients would need to implement IDataItemObserver interface
// to receive data when it becomes available.
class SystemStatus;
class SystemStatusOsObserver : public IOsObserver {
public:
// ctor
SystemStatusOsObserver(
SystemStatus* systemstatus, const MsgTask* msgTask);
// dtor
~SystemStatusOsObserver();
// To set the subscription object
virtual void setSubscriptionObj(IDataItemSubscription* subscriptionObj);
// To set the framework action request object
inline void setFrameworkActionReqObj(IFrameworkActionReq* frameworkActionReqObj) {
mContext.mFrameworkActionReqObj = frameworkActionReqObj;
#ifdef USE_GLIB
if (mBackHaulConnectReqCount > 0) {
connectBackhaul();
mBackHaulConnectReqCount = 0;
}
#endif
}
// IDataItemSubscription Overrides
virtual void subscribe(const list<DataItemId>& l, IDataItemObserver* client);
virtual void updateSubscription(const list<DataItemId>& l, IDataItemObserver* client);
virtual void requestData(const list<DataItemId>& l, IDataItemObserver* client);
virtual void unsubscribe(const list<DataItemId>& l, IDataItemObserver* client);
virtual void unsubscribeAll(IDataItemObserver* client);
// IDataItemObserver Overrides
virtual void notify(const list<IDataItemCore*>& dlist);
inline virtual void getName(string& name) {
name = mAddress;
}
// IFrameworkActionReq Overrides
virtual void turnOn(DataItemId dit, int timeOut = 0);
virtual void turnOff(DataItemId dit);
#ifdef USE_GLIB
virtual bool connectBackhaul();
virtual bool disconnectBackhaul();
#endif
private:
SystemStatus* mSystemStatus;
SystemContext mContext;
const string mAddress;
IClientIndex<IDataItemObserver*, DataItemId>* mClientIndex;
IDataItemIndex<IDataItemObserver*, DataItemId>* mDataItemIndex;
map<DataItemId, IDataItemCore*> mDataItemCache;
map<DataItemId, int> mActiveRequestCount;
// Cache the subscribe and requestData till subscription obj is obtained
ObserverReqCache mSubscribeReqCache;
ObserverReqCache mReqDataCache;
void cacheObserverRequest(ObserverReqCache& reqCache,
const list<DataItemId>& l, IDataItemObserver* client);
#ifdef USE_GLIB
// Cache the framework action request for connect/disconnect
int mBackHaulConnectReqCount;
#endif
// Helpers
void sendFirstResponse(const list<DataItemId>& l, IDataItemObserver* to);
void sendCachedDataItems(const list<DataItemId>& l, IDataItemObserver* to);
void updateCache(IDataItemCore* d, bool& dataItemUpdated);
inline void logMe(const list<DataItemId>& l) {
for (auto id : l) {
LOC_LOGD("DataItem %d", id);
}
}
};
} // namespace loc_core
#endif //__SYSTEM_STATUS__
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