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

Change-Id: I5b56ccc6b8bad3c585f4d33ddd6d9094751c8797
diff --git a/protocols/pcep/api/src/main/java/org/onosproject/pcep/controller/PcepAnnotationKeys.java b/protocols/pcep/api/src/main/java/org/onosproject/pcep/controller/PcepAnnotationKeys.java
new file mode 100644
index 0000000..097f647
--- /dev/null
+++ b/protocols/pcep/api/src/main/java/org/onosproject/pcep/controller/PcepAnnotationKeys.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed 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.
+ */
+package org.onosproject.pcep.controller;
+
+/**
+ * Collection of keys for annotation for PCEP tunnels.
+ */
+public final class PcepAnnotationKeys {
+
+    /**
+     *  Prohibits instantiation.
+     */
+    private PcepAnnotationKeys() {
+    }
+
+    /**
+     * Annotation key for bandwidth.
+     * The value for this key is interpreted as Mbps.
+     */
+    public static final String BANDWIDTH = "bandwidth";
+
+    /**
+     * Annotation key for the LSP signaling type.
+     */
+    public static final String LSP_SIG_TYPE = "lspSigType";
+
+    /**
+     * Annotation key for the PCC tunnel id.
+     */
+    public static final String PCC_TUNNEL_ID = "PccTunnelId";
+
+    /**
+     * Annotation key for the LSP id assigned per tunnel per session.
+     */
+    public static final String PLSP_ID = "PLspId";
+
+    /**
+     * Annotation key for the LSP id assigned per tunnel.
+     */
+    public static final String LOCAL_LSP_ID = "localLspId";
+
+    /**
+     * Annotation key for the identification of initiated LSP.
+     */
+    public static final String PCE_INIT = "pceInit";
+
+    /**
+     * Annotation key for the cost type.
+     */
+    public static final String COST_TYPE = "costType";
+
+    /**
+     * Annotation key for the Delegation.
+     * Whether LSPs are delegated or not
+     */
+    public static final String DELEGATE = "delegate";
+}
diff --git a/protocols/pcep/api/src/main/java/org/onosproject/pcep/controller/SrpIdGenerators.java b/protocols/pcep/api/src/main/java/org/onosproject/pcep/controller/SrpIdGenerators.java
new file mode 100644
index 0000000..e0cb3b3
--- /dev/null
+++ b/protocols/pcep/api/src/main/java/org/onosproject/pcep/controller/SrpIdGenerators.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2015-present Open Networking Laboratory
+ *
+ * Licensed 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.
+ */
+package org.onosproject.pcep.controller;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.slf4j.Logger;
+
+/**
+ * Unique Srp Id generator for pcep messages.
+ */
+public final class SrpIdGenerators {
+
+    private static final Logger log = getLogger(SrpIdGenerators.class);
+    private static final AtomicInteger SRP_ID_GEN = new AtomicInteger();
+    private static final int MAX_SRP_ID = 0x7FFFFFFF;
+    private static int srpId;
+
+    /**
+     * Default constructor.
+     */
+    private SrpIdGenerators() {
+    }
+
+    /**
+     * Get the next srp id.
+     *
+     * @return srp id
+     */
+    public static int create() {
+        do {
+            if (srpId >= MAX_SRP_ID) {
+                if (SRP_ID_GEN.get() >= MAX_SRP_ID) {
+                    SRP_ID_GEN.set(0);
+                }
+            }
+            srpId = SRP_ID_GEN.incrementAndGet();
+        } while (srpId > MAX_SRP_ID);
+        return srpId;
+    }
+}
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