update of groups up to the latest attached circle server update TS. Should re-send groups that depend on a circle when the circle change

libretroshare/src/gxs/rsgenexchange.cc

@@ -156,6 +156,11 @@ RsGenExchange::~RsGenExchange()
 
 }
 
+bool RsGenExchange::getGroupServerUpdateTS(const RsGxsGroupId& gid, time_t& grp_server_update_TS, time_t& msg_server_update_TS) 
+{
+    return mNetService->getGroupServerUpdateTS(gid,grp_server_update_TS,msg_server_update_TS) ;
+}
+
 void RsGenExchange::data_tick()
 {
 

libretroshare/src/gxs/rsgenexchange.h

@@ -616,6 +616,14 @@ public:
 
     void shareGroupPublishKey(const RsGxsGroupId& grpId,const std::set<RsPeerId>& peers) ;
     
+    /*!
+     * Returns the local TS of the group as known by the network service.
+     * This is useful to allow various network services to sync their update TS
+     * when needed. Typical use case is forums and circles.
+     * @param gid GroupId the TS is which is requested
+     */
+    bool getGroupServerUpdateTS(const RsGxsGroupId& gid,time_t& grp_server_update_TS,time_t& msg_server_update_TS) ;
+
 protected:
 
     /** Notifications **/

libretroshare/src/gxs/rsgixs.h

@@ -215,6 +215,8 @@ class RsGcxs
         virtual int  canReceive(const RsGxsCircleId &circleId, const RsPgpId &id) = 0;
         virtual bool recipients(const RsGxsCircleId &circleId, std::list<RsPgpId>& friendlist) = 0;
         virtual bool recipients(const RsGxsCircleId &circleId, std::list<RsGxsId>& idlist) = 0;
+        
+	virtual bool getLocalCircleServerUpdateTS(const RsGxsCircleId& gid,time_t& grp_server_update_TS,time_t& msg_server_update_TS) =0;
 };
 
 
@@ -225,8 +227,12 @@ public:
 	RsGxsCircleExchange(RsGeneralDataService* gds, RsNetworkExchangeService* ns, RsSerialType* serviceSerialiser, 
 			uint16_t mServType, RsGixs* gixs, uint32_t authenPolicy)
 	:RsGenExchange(gds,ns,serviceSerialiser,mServType, gixs, authenPolicy)  { return; }
-virtual ~RsGxsCircleExchange() { return; }
+	virtual ~RsGxsCircleExchange() { return; }
     
+	virtual bool getLocalCircleServerUpdateTS(const RsGxsCircleId& gid,time_t& grp_server_update_TS,time_t& msg_server_update_TS) 
+	{
+		return RsGenExchange::getGroupServerUpdateTS(RsGxsGroupId(gid),grp_server_update_TS,msg_server_update_TS) ;
+	}
 };
 
 

libretroshare/src/gxs/rsgxsnetservice.cc

@@ -1929,14 +1929,14 @@ void RsGxsNetService::updateClientSyncTS()
 
 void RsGxsNetService::updateServerSyncTS()
 {
-	RS_STACK_MUTEX(mNxsMutex) ;
-
 	RsGxsMetaDataTemporaryMap<RsGxsGrpMetaData> gxsMap;
 
-#ifdef NXS_NET_DEBUG_0
+//#ifdef NXS_NET_DEBUG_0
     	GXSNETDEBUG___<< "updateServerSyncTS(): updating last modification time stamp of local data." << std::endl;
-#endif
+//#endif
     	
+	{
+		RS_STACK_MUTEX(mNxsMutex) ;
 		// retrieve all grps and update TS
 		mDataStore->retrieveGxsGrpMetaData(gxsMap);
 
@@ -1949,8 +1949,6 @@ void RsGxsNetService::updateServerSyncTS()
 		if(mGrpServerUpdateItem == NULL)
 			mGrpServerUpdateItem = new RsGxsServerGrpUpdateItem(mServType);
 
-	bool change = false;
-
 		// then remove from mServerMsgUpdateMap, all items that are not in the group list!
 
 #ifdef NXS_NET_DEBUG_0
@@ -1972,20 +1970,54 @@ void RsGxsNetService::updateServerSyncTS()
 			}
 			else
 				++it;
+	}
 
 #ifdef NXS_NET_DEBUG_0
     	if(gxsMap.empty())
             GXSNETDEBUG___<< "  database seems to be empty. The modification timestamp will be reset." << std::endl;
 #endif
     	// finally, update timestamps.
+	bool change = false;
         
 	for(std::map<RsGxsGroupId, RsGxsGrpMetaData*>::const_iterator mit = gxsMap.begin();mit != gxsMap.end(); ++mit)
 	{
 		const RsGxsGroupId& grpId = mit->first;
-		const RsGxsGrpMetaData* grpMeta = mit->second;
-		ServerMsgMap::iterator mapIT = mServerMsgUpdateMap.find(grpId);
-		RsGxsServerMsgUpdateItem* msui = NULL;
 
+        	// Check if the group is subscribed and restricted to a circle. If the circle has changed, update the
+        	// global TS to reflect that change to clients who may be able to see/subscribe to that particular group.
+        
+        	if( (mit->second->mSubscribeFlags & GXS_SERV::GROUP_SUBSCRIBE_SUBSCRIBED) && !mit->second->mCircleId.isNull())
+	    	{
+                	// ask to the GxsNetService of circles what the server TS is for that circle. If more recent, we update the serverTS of the 
+                	// local group
+                
+                        time_t circle_group_server_ts ;
+                        time_t circle_msg_server_ts ;
+                
+                        // This call needs to be off-mutex, because of self-restricted circles.
+                        
+                        if(mCircles->getLocalCircleServerUpdateTS(mit->second->mCircleId,circle_group_server_ts,circle_msg_server_ts))
+                        {
+                            std::cerr << "Group " << mit->first << " is conditionned to circle " << mit->second->mCircleId << ". local Grp TS=" << time(NULL) - mGrpServerUpdateItem->grpUpdateTS << " secs ago, circle grp server update TS=" << time(NULL) - circle_group_server_ts << " secs ago";
+                            
+                            if(circle_group_server_ts > mGrpServerUpdateItem->grpUpdateTS)
+			    {
+				    std::cerr << " - Updating local Grp Server update TS to follow changes in circles." << std::endl;
+
+				    RS_STACK_MUTEX(mNxsMutex) ;
+				    mGrpServerUpdateItem->grpUpdateTS = circle_group_server_ts ;
+			    }
+                            else
+                                std::cerr << " - Nothing to do." << std::endl;
+                        }
+                        else
+                            std::cerr << "(EE) Cannot retrieve attached circle TS" << std::endl;
+            	}
+            
+		RS_STACK_MUTEX(mNxsMutex) ;
+        
+		const RsGxsGrpMetaData* grpMeta = mit->second;
+		RsGxsServerMsgUpdateItem* msui = NULL;
 #ifdef TO_REMOVE
 		// That accounts for modification of the meta data.
 
@@ -1998,6 +2030,8 @@ void RsGxsNetService::updateServerSyncTS()
 		}
 #endif
 
+		ServerMsgMap::iterator mapIT = mServerMsgUpdateMap.find(grpId);
+        
 		if(mapIT == mServerMsgUpdateMap.end())
 		{
 			msui = new RsGxsServerMsgUpdateItem(mServType);
@@ -4832,3 +4866,22 @@ void RsGxsNetService::handleRecvPublishKeys(RsNxsGroupPublishKeyItem *item)
 		std::cerr << "(EE) could not update database. Something went wrong." << std::endl;
 	}
 }
+
+bool RsGxsNetService::getGroupServerUpdateTS(const RsGxsGroupId& gid,time_t& group_server_update_TS, time_t& msg_server_update_TS)
+{
+    RS_STACK_MUTEX(mNxsMutex) ;
+
+    if(mGrpServerUpdateItem == NULL)
+	    return false ;
+
+    group_server_update_TS = mGrpServerUpdateItem->grpUpdateTS ;
+
+    std::map<RsGxsGroupId,RsGxsServerMsgUpdateItem*>::iterator it = mServerMsgUpdateMap.find(gid) ;
+
+    if(mServerMsgUpdateMap.end() == it)
+	    msg_server_update_TS = 0 ;
+    else
+	    msg_server_update_TS = it->second->msgUpdateTS ;
+
+    return true ;
+}

libretroshare/src/gxs/rsgxsnetservice.h

@@ -154,6 +154,8 @@ public:
 
     virtual void rejectMessage(const RsGxsMessageId& msg_id) ;
     
+    virtual bool getGroupServerUpdateTS(const RsGxsGroupId& gid,time_t& grp_server_update_TS,time_t& msg_server_update_TS) ;
+    
     /* p3Config methods */
 public:
 

libretroshare/src/gxs/rsnxs.h

@@ -134,6 +134,16 @@ public:
      * \param msgId
      */
     virtual void rejectMessage(const RsGxsMessageId& msgId) =0;
+    
+    /*!
+     * \brief getGroupServerUpdateTS
+     * 		Returns the server update time stamp for that group. This is used for synchronisation of TS between
+     * 		various network exchange services, suhc as channels/circles or forums/circles
+     * \param gid	group for that request
+     * \param tm	time stamp computed
+     * \return 		false if the group is not found, true otherwise
+     */
+    virtual bool getGroupServerUpdateTS(const RsGxsGroupId& gid,time_t& grp_server_update_TS,time_t& msg_server_update_TS) =0;
 };
 
 #endif // RSGNP_H