[ONOS-4687] GoldenEye - Label map download issues.

Change-Id: I5b56ccc6b8bad3c585f4d33ddd6d9094751c8797
diff --git a/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepChannelHandler.java b/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepChannelHandler.java
index 6fe05e0..d2523f5 100644
--- a/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepChannelHandler.java
+++ b/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepChannelHandler.java
@@ -62,6 +62,8 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import static org.onosproject.pcep.controller.PcepSyncStatus.NOT_SYNCED;
+
 /**
  * Channel handler deals with the pcc client connection and dispatches
  * messages from client to the appropriate locations.
@@ -233,6 +235,11 @@
                             h.pcepPacketStats);
                     //Get pc instance and set capabilities
                     h.pc.setCapability(h.capability);
+
+                    // Initilialize DB sync status.
+                    h.pc.setLspDbSyncStatus(NOT_SYNCED);
+                    h.pc.setLabelDbSyncStatus(NOT_SYNCED);
+
                     // set the status of pcc as connected
                     h.pc.setConnected(true);
                     h.pc.setChannel(h.channel);
@@ -258,6 +265,7 @@
                     log.debug("Keep alive time : " + keepAliveTimer);
 
                     //set the state handshake completion.
+
                     h.sendKeepAliveMessage();
                     h.pcepPacketStats.addOutPacket();
                     h.setHandshakeComplete(true);
diff --git a/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepClientControllerImpl.java b/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepClientControllerImpl.java
index cb40ea0..00a7a20 100644
--- a/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepClientControllerImpl.java
+++ b/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepClientControllerImpl.java
@@ -434,10 +434,16 @@
             }
 
             List<PcepStateReport> syncStateRptList = pc.getSyncMsgList(pccId);
+            if (syncStateRptList == null) {
+                // When there are no LSPs to sync, directly end-of-sync PCRpt will come and the
+                // list will be null.
+                syncStateRptList = Collections.EMPTY_LIST;
+            }
+
             Iterator<PcepStateReport> stateRptListIterator = syncStateRptList.iterator();
 
             // For every report, fetch PLSP id, local LSP id and symbolic path name from the message.
-            while (syncStateRptList.iterator().hasNext()) {
+            while (stateRptListIterator.hasNext()) {
                 PcepStateReport stateRpt = stateRptListIterator.next();
                 Tunnel tunnel = null;
 
diff --git a/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepClientImpl.java b/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepClientImpl.java
index a62a611..91a79de 100644
--- a/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepClientImpl.java
+++ b/protocols/pcep/ctl/src/main/java/org/onosproject/pcep/controller/impl/PcepClientImpl.java
@@ -73,7 +73,7 @@
     private byte sessionId;
     private PcepPacketStatsImpl pktStats;
     private Map<LspKey, Boolean> lspDelegationInfo;
-    private Map<PccId, List<PcepStateReport>> sycRptCache = new HashMap<>();
+    private Map<PccId, List<PcepStateReport>> syncRptCache = new HashMap<>();
 
     @Override
     public void init(PccId pccId, PcepVersion pcepVersion, PcepPacketStats pktStats) {
@@ -267,24 +267,24 @@
     @Override
     public void initializeSyncMsgList(PccId pccId) {
         List<PcepStateReport> rptMsgList = new LinkedList<>();
-        sycRptCache.put(pccId, rptMsgList);
+        syncRptCache.put(pccId, rptMsgList);
     }
 
     @Override
     public List<PcepStateReport> getSyncMsgList(PccId pccId) {
-        return sycRptCache.get(pccId);
+        return syncRptCache.get(pccId);
     }
 
     @Override
     public void removeSyncMsgList(PccId pccId) {
-        sycRptCache.remove(pccId);
+        syncRptCache.remove(pccId);
     }
 
     @Override
     public void addSyncMsgToList(PccId pccId, PcepStateReport rptMsg) {
-        List<PcepStateReport> rptMsgList = sycRptCache.get(pccId);
+        List<PcepStateReport> rptMsgList = syncRptCache.get(pccId);
         rptMsgList.add(rptMsg);
-        sycRptCache.put(pccId, rptMsgList);
+        syncRptCache.put(pccId, rptMsgList);
     }
 
     @Override