Integrating YANG live compilation into YANG runtime.

- Bumped ONOS dependency on ONOS YANG tools 2.2.0-b4.
- Added CLI to compile YANG models.
- Added GUI capability to compile YANG models via drag-n-drop or file upload.
- Fixed defect in propagating self-contained JAR apps through the cluster.

Change-Id: Icbd2a588bf1ffe0282e12d3d10a117e0957c3084
diff --git a/apps/yang/src/main/java/org/onosproject/yang/YangLiveCompilerService.java b/apps/yang/src/main/java/org/onosproject/yang/YangLiveCompilerService.java
new file mode 100644
index 0000000..de151d1
--- /dev/null
+++ b/apps/yang/src/main/java/org/onosproject/yang/YangLiveCompilerService.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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.yang;
+
+import com.google.common.annotations.Beta;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+/**
+ * Runtime service for compiling YANG source files and packaging the compiled
+ * artifacts into a ready-to-load application.
+ */
+@Beta
+public interface YangLiveCompilerService {
+
+    /**
+     * Compiles the YANG source file(s) contained in the specified input
+     * stream either as individual YANG source file, or as a JAR/ZIP collection
+     * of YANG source files.
+     *
+     * @param modelId     model identifier
+     * @param yangSources input stream containing a single YANG source file
+     *                    or a JAR/ZIP archive containing collection of YANG
+     *                    source files
+     * @return input stream containing a packaged ONOS application JAR file
+     * @throws IOException if issues arise when reading the yang sources stream
+     */
+    InputStream compileYangFiles(String modelId, InputStream yangSources) throws IOException;
+
+}