[ONOS-2287,ONOS-2288]Pcep TunnelProvider implementation
Change-Id: I4184336c200f1060e93be5dc28076ba35f6b98f4
diff --git a/providers/pcep/tunnel/src/main/java/org/onosproject/provider/pcep/tunnel/impl/SrpIdGenerators.java b/providers/pcep/tunnel/src/main/java/org/onosproject/provider/pcep/tunnel/impl/SrpIdGenerators.java
new file mode 100644
index 0000000..5b5a5fb
--- /dev/null
+++ b/providers/pcep/tunnel/src/main/java/org/onosproject/provider/pcep/tunnel/impl/SrpIdGenerators.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2015 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.provider.pcep.tunnel.impl;
+
+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;
+ }
+}