Interfaces added for PCEP messages and PCEP Controller

Change-Id: Id678b6832b42bcf4a437322996244d224c4052d0
diff --git a/pcep/pcepio/src/main/java/org/onosproject/pcepio/exceptions/PcepParseException.java b/pcep/pcepio/src/main/java/org/onosproject/pcepio/exceptions/PcepParseException.java
new file mode 100755
index 0000000..85bc33f
--- /dev/null
+++ b/pcep/pcepio/src/main/java/org/onosproject/pcepio/exceptions/PcepParseException.java
@@ -0,0 +1,92 @@
+/*
+ * 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.pcepio.exceptions;
+
+/**
+ * Custom Exception for PCEP IO.
+ */
+public class PcepParseException extends Exception {
+
+    private static final long serialVersionUID = 7960991379951448423L;
+    private byte errType = 0;
+    private byte errValue = 0;
+
+    /**
+     * Default constructor to create a new exception.
+     */
+    public PcepParseException() {
+        super();
+    }
+
+    /**
+     * Constructor to create exception from message and cause.
+     *
+     * @param message the detail of exception in string
+     * @param cause underlying cause of the error
+     */
+    public PcepParseException(final String message, final Throwable cause) {
+        super(message, cause);
+    }
+
+    /**
+     * Constructor to create exception from message.
+     *
+     * @param message the detail of exception in string
+     */
+    public PcepParseException(final String message) {
+        super(message);
+    }
+
+    /**
+     * Constructor to create exception from error type and error value.
+     *
+     * @param errType error type of pcep
+     * @param errValue error value of pcep
+     */
+    public PcepParseException(final byte errType, final byte errValue) {
+        super();
+        this.errType = errType;
+        this.errValue = errValue;
+    }
+
+    /**
+     * Constructor to create exception from cause.
+     *
+     * @param cause underlying cause of the error
+     */
+    public PcepParseException(final Throwable cause) {
+        super(cause);
+    }
+
+    /**
+     * Returns error type for this exception.
+     *
+     * @return ErrorType
+     */
+    public byte getErrorType() {
+        return this.errType;
+    }
+
+    /**
+     * Returns error value for this exception.
+     *
+     * @return ErrorValue
+     */
+    public byte getErrorValue() {
+        return this.errValue;
+    }
+}