1 files changed, 77 insertions, 0 deletions
diff --git a/framework/src/onos/web/gui/src/main/java/org/onosproject/ui/impl/MainModuleResource.java b/framework/src/onos/web/gui/src/main/java/org/onosproject/ui/impl/MainModuleResource.java
new file mode 100644
index 00000000..42d1dff9
--- /dev/null
+++ b/framework/src/onos/web/gui/src/main/java/org/onosproject/ui/impl/MainModuleResource.java
@@ -0,0 +1,77 @@
+/*
+ * 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.ui.impl;
+
+import org.onosproject.rest.AbstractInjectionResource;
+import org.onosproject.ui.UiExtension;
+import org.onosproject.ui.UiExtensionService;
+import org.onosproject.ui.UiView;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.Response;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.SequenceInputStream;
+
+import static com.google.common.collect.ImmutableList.of;
+import static com.google.common.io.ByteStreams.toByteArray;
+import static org.onosproject.ui.impl.MainViewResource.SCRIPT;
+
+/**
+ * Resource for serving the dynamically composed onos.js.
+ */
+@Path("/")
+public class MainModuleResource extends AbstractInjectionResource {
+
+    private static final String MAIN_JS = "onos.js";
+
+    private static final String INJECT_VIEW_IDS_START = "// {INJECTED-VIEW-IDS-START}";
+    private static final String INJECT_VIEW_IDS_END = "// {INJECTED-VIEW-IDS-END}";
+
+    @GET
+    @Produces(SCRIPT)
+    public Response getMainModule() throws IOException {
+        UiExtensionService service = get(UiExtensionService.class);
+        InputStream jsTemplate = getClass().getClassLoader().getResourceAsStream(MAIN_JS);
+        String js = new String(toByteArray(jsTemplate));
+
+        int p1s = split(js, 0, INJECT_VIEW_IDS_START);
+        int p1e = split(js, 0, INJECT_VIEW_IDS_END);
+        int p2s = split(js, p1e, null);
+
+        StreamEnumeration streams =
+                new StreamEnumeration(of(stream(js, 0, p1s),
+                                         includeViewIds(service),
+                                         stream(js, p1e, p2s)));
+
+        return Response.ok(new SequenceInputStream(streams)).build();
+    }
+
+    // Produces an input stream including view id injections from all extensions.
+    private InputStream includeViewIds(UiExtensionService service) {
+        StringBuilder sb = new StringBuilder("\n");
+        for (UiExtension extension : service.getExtensions()) {
+            for (UiView view : extension.views()) {
+                sb.append("        '").append(view.id()).append("',");
+            }
+        }
+        return new ByteArrayInputStream(sb.toString().getBytes());
+    }
+
+}