Implement builders for optical intents

Change-Id: Ide728a943eb0ec3d3ba995f63c016e7d52bff65c
diff --git a/core/api/src/main/java/org/onosproject/net/intent/OpticalPathIntent.java b/core/api/src/main/java/org/onosproject/net/intent/OpticalPathIntent.java
index 4843877..754d433 100644
--- a/core/api/src/main/java/org/onosproject/net/intent/OpticalPathIntent.java
+++ b/core/api/src/main/java/org/onosproject/net/intent/OpticalPathIntent.java
@@ -15,14 +15,15 @@
  */
 package org.onosproject.net.intent;
 
-import com.google.common.base.MoreObjects;
-import com.google.common.collect.ImmutableSet;
+import java.util.Collection;
+
 import org.onosproject.core.ApplicationId;
 import org.onosproject.net.ConnectPoint;
 import org.onosproject.net.Link;
 import org.onosproject.net.Path;
 
-import java.util.Collection;
+import com.google.common.base.MoreObjects;
+import com.google.common.collect.ImmutableSet;
 
 import static com.google.common.base.Preconditions.checkNotNull;
 
@@ -33,12 +34,16 @@
     private final Path path;
 
 
-    public OpticalPathIntent(ApplicationId appId,
-            ConnectPoint src,
-            ConnectPoint dst,
-            Path path) {
-        super(appId, null, ImmutableSet.copyOf(path.links()),
-                Intent.DEFAULT_INTENT_PRIORITY);
+    private OpticalPathIntent(ApplicationId appId,
+                              Key key,
+                              ConnectPoint src,
+                              ConnectPoint dst,
+                              Path path,
+                              int priority) {
+        super(appId,
+                key,
+                ImmutableSet.copyOf(path.links()),
+                priority);
         this.src = checkNotNull(src);
         this.dst = checkNotNull(dst);
         this.path = checkNotNull(path);
@@ -50,6 +55,92 @@
         this.path = null;
     }
 
+    /**
+     * Returns a new optical connectivity intent builder.
+     *
+     * @return host to host intent builder
+     */
+    public static Builder builder() {
+        return new Builder();
+    }
+
+
+    /**
+     * Builder for optical path intents.
+     */
+    public static class Builder extends Intent.Builder {
+        private ConnectPoint src;
+        private ConnectPoint dst;
+        private Path path;
+        Key key;
+
+        @Override
+        public Builder appId(ApplicationId appId) {
+            return (Builder) super.appId(appId);
+        }
+
+        @Override
+        public Builder key(Key key) {
+            return (Builder) super.key(key);
+        }
+
+        @Override
+        public Builder priority(int priority) {
+            return (Builder) super.priority(priority);
+        }
+
+        /**
+         * Sets the source for the intent that will be built.
+         *
+         * @param src source to use for built intent
+         * @return this builder
+         */
+        public Builder src(ConnectPoint src) {
+            this.src = src;
+            return this;
+        }
+
+        /**
+         * Sets the destination for the intent that will be built.
+         *
+         * @param dst dest to use for built intent
+         * @return this builder
+         */
+        public Builder dst(ConnectPoint dst) {
+            this.dst = dst;
+            return this;
+        }
+
+        /**
+         * Sets the path for the intent that will be built.
+         *
+         * @param path path to use for built intent
+         * @return this builder
+         */
+        public Builder path(Path path) {
+            this.path = path;
+            return this;
+        }
+
+        /**
+         * Builds an optical path intent from the accumulated parameters.
+         *
+         * @return optical path intent
+         */
+        public OpticalPathIntent build() {
+
+            return new OpticalPathIntent(
+                    appId,
+                    key,
+                    src,
+                    dst,
+                    path,
+                    priority
+            );
+        }
+    }
+
+
     public ConnectPoint src() {
         return src;
     }