[ONOS-4160] pce rest and cli

Change-Id: Icc1ec3070fe595bfc1439048234d6a6f23127c13
diff --git a/apps/pce/src/main/java/org/onosproject/pce/cli/PceUpdatePathCommand.java b/apps/pce/src/main/java/org/onosproject/pce/cli/PceUpdatePathCommand.java
new file mode 100644
index 0000000..e1dcd65
--- /dev/null
+++ b/apps/pce/src/main/java/org/onosproject/pce/cli/PceUpdatePathCommand.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2016 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.pce.cli;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+import java.util.List;
+import java.util.LinkedList;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.commands.Option;
+
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.intent.Constraint;
+import org.onosproject.pce.pceservice.api.PceService;
+
+import org.slf4j.Logger;
+
+/**
+ * Supports updating the PCE path.
+ */
+@Command(scope = "onos", name = "pce-update-path",
+        description = "Supports updating PCE path.")
+public class PceUpdatePathCommand extends AbstractShellCommand {
+    private final Logger log = getLogger(getClass());
+
+    @Argument(index = 0, name = "id", description = "Path Id.", required = true, multiValued = false)
+    String id = null;
+
+    @Option(name = "-c", aliases = "--cost", description = "The cost attribute IGP cost (1) or TE cost (2).",
+            required = false, multiValued = false)
+    int cost = 0;
+
+    @Option(name = "-b", aliases = "--bandwidth", description = "The bandwidth attribute of path. "
+            + "Data rate unit is in Bps.", required = false, multiValued = false)
+    double bandwidth = 0.0;
+
+    @Override
+    protected void execute() {
+        log.info("executing pce-update-path");
+
+        PceService service = get(PceService.class);
+
+        List<Constraint> constrntList = new LinkedList<>();
+        // Assign cost
+        if (cost != 0) {
+            //TODO: need to uncomment below lines once CostConstraint is ready
+            //CostConstraint.Type costType = CostConstraint.Type.values()[Integer.valueOf(cost)];
+            //constrntList.add(CostConstraint.of(costType));
+        }
+
+        // Assign bandwidth. Data rate unit is in Bps.
+        if (bandwidth != 0.0) {
+            //TODO: need to uncomment below line once BandwidthConstraint is ready
+            //constrntList.add(LocalBandwidthConstraint.of(Double.valueOf(bandwidth), DataRateUnit.valueOf("BPS")));
+        }
+
+        //TODO: need to uncomment below lines once updatePath method is added to PceService
+        //if (null == service.updatePath(PcePathId.of(id), constrntList)) {
+        //    error("Path updation failed.");
+        //    return;
+        //}
+    }
+}