Added a 'clear container' admin function to gae-tweetstore-spring

demos/tweetstore/gae-tweetstore-spring/src/main/java/org/jclouds/demo/tweetstore/config/SpringServletConfig.java

@@ -46,6 +46,7 @@ import org.jclouds.ContextBuilder;
 import org.jclouds.blobstore.BlobStoreContext;
 import org.jclouds.demo.tweetstore.config.util.CredentialsCollector;
 import org.jclouds.demo.tweetstore.controller.AddTweetsController;
+import org.jclouds.demo.tweetstore.controller.ClearTweetsController;
 import org.jclouds.demo.tweetstore.controller.EnqueueStoresController;
 import org.jclouds.demo.tweetstore.controller.StoreTweetsController;
 import org.jclouds.demo.tweetstore.functions.ServiceToStoredTweetStatuses;
@@ -172,6 +173,11 @@ public class SpringServletConfig extends LoggingConfig implements ServletConfigA
       return new EnqueueStoresController(providerTypeToBlobStoreMap, queue);
    }
 
+   @Bean
+   public ClearTweetsController clearTweetsController() {
+      return new ClearTweetsController(providerTypeToBlobStoreMap, container);
+   }
+
    private void injectServletConfig(Servlet servlet) {
       LOGGER.trace("About to inject servlet config '%s'", servletConfig);
       try {
@@ -194,6 +200,7 @@ public class SpringServletConfig extends LoggingConfig implements ServletConfigA
       urlMap.put("/store/*", storeTweetsController());
       urlMap.put("/tweets/*", addTweetsController());
       urlMap.put("/stores/*", enqueueStoresController());
+      urlMap.put("/clear/*", clearTweetsController());
       mapping.setUrlMap(urlMap);
       /*
        * "/store", "/tweets" and "/stores" are part of the servlet mapping and thus 

demos/tweetstore/gae-tweetstore-spring/src/main/java/org/jclouds/demo/tweetstore/controller/ClearTweetsController.java

@@ -0,0 +1,96 @@
+/**
+ * Licensed to jclouds, Inc. (jclouds) under one or more
+ * contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  jclouds licenses this file
+ * to you 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.jclouds.demo.tweetstore.controller;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static com.google.common.base.Strings.nullToEmpty;
+
+import java.io.IOException;
+import java.util.Map;
+
+import javax.annotation.Resource;
+import javax.inject.Inject;
+import javax.inject.Named;
+import javax.inject.Singleton;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.ws.rs.core.MediaType;
+
+import org.jclouds.blobstore.BlobStoreContext;
+import org.jclouds.demo.tweetstore.reference.TweetStoreConstants;
+import org.jclouds.logging.Logger;
+
+import com.google.common.annotations.VisibleForTesting;
+
+/**
+ * Grab tweets related to me and store them into blobstores
+ * 
+ * @author Adrian Cole
+ */
+@Singleton
+public class ClearTweetsController extends HttpServlet {
+   /** The serialVersionUID */
+   private static final long serialVersionUID = 7215420527854203714L;
+
+   private final Map<String, BlobStoreContext> contexts;
+   private final String container;
+
+   @Resource
+   protected Logger logger = Logger.NULL;
+
+   @Inject
+   @VisibleForTesting
+   public ClearTweetsController(Map<String, BlobStoreContext> contexts,
+         @Named(TweetStoreConstants.PROPERTY_TWEETSTORE_CONTAINER) String container) {
+      this.container = container;
+      this.contexts = contexts;
+   }
+
+   @VisibleForTesting
+   public void clearContainer(String contextName) {
+        BlobStoreContext context = checkNotNull(contexts.get(contextName),
+                "no context for %s in %s", contextName, contexts.keySet());
+        try {
+            context.getBlobStore().clearContainer(container);
+        } catch (Exception e) {
+            logger.error(e, "Error clearing tweets in %s/%s", container, context);
+        }
+   }
+
+   @Override
+   protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+       if (nullToEmpty(request.getHeader("X-Originator")).equals("admin")) {
+         try {
+            String contextName = checkNotNull(request.getHeader("context"), "missing header context");
+            logger.info("clearing tweets in %s/%s", container, contextName);
+            clearContainer(contextName);
+            logger.debug("done clearing tweets");
+            response.setContentType(MediaType.TEXT_PLAIN);
+            response.getWriter().println("Done!");
+         } catch (Exception e) {
+            logger.error(e, "Error clearing tweets");
+            throw new ServletException(e);
+         }
+      } else {
+         response.sendError(401);
+      }
+   }
+}

demos/tweetstore/gae-tweetstore-spring/src/main/webapp/WEB-INF/web.xml

@@ -45,6 +45,10 @@
         <servlet-name>dispatcher</servlet-name>
         <url-pattern>/stores/*</url-pattern>
     </servlet-mapping>
+    <servlet-mapping>
+        <servlet-name>dispatcher</servlet-name>
+        <url-pattern>/clear/*</url-pattern>
+    </servlet-mapping>
 
     <!-- limit submission of storage tasks to the cron job -->
     <security-constraint>

demos/tweetstore/gae-tweetstore-spring/src/test/java/org/jclouds/demo/tweetstore/controller/ClearTweetsControllerTest.java

@@ -0,0 +1,72 @@
+/**
+ * Licensed to jclouds, Inc. (jclouds) under one or more
+ * contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  jclouds licenses this file
+ * to you 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.jclouds.demo.tweetstore.controller;
+
+import static org.testng.Assert.assertEquals;
+
+import java.io.IOException;
+import java.util.Map;
+import java.util.concurrent.ExecutionException;
+
+import org.jclouds.ContextBuilder;
+import org.jclouds.blobstore.BlobStoreContext;
+import org.jclouds.blobstore.TransientApiMetadata;
+import org.jclouds.blobstore.domain.Blob;
+import org.jclouds.demo.tweetstore.reference.TweetStoreConstants;
+import org.testng.annotations.Test;
+
+import com.google.common.collect.ImmutableMap;
+
+/**
+ * Tests behavior of {@code AddTweetsController}
+ * 
+ * @author Adrian Cole
+ */
+@Test(groups = "unit")
+public class ClearTweetsControllerTest {
+
+    Map<String, BlobStoreContext> createBlobStores(String container) throws InterruptedException, ExecutionException {
+        TransientApiMetadata transientApiMetadata = TransientApiMetadata.builder().build();
+        Map<String, BlobStoreContext> contexts = ImmutableMap.<String, BlobStoreContext>of(
+                        "test1", ContextBuilder.newBuilder(transientApiMetadata).build(BlobStoreContext.class),
+                        "test2", ContextBuilder.newBuilder(transientApiMetadata).build(BlobStoreContext.class));
+        for (BlobStoreContext blobstore : contexts.values()) {
+            blobstore.getBlobStore().createContainerInLocation(null, container);
+            Blob blob = blobstore.getAsyncBlobStore().blobBuilder("1").build();
+            blob.getMetadata().getUserMetadata().put(TweetStoreConstants.SENDER_NAME, "frank");
+            blob.setPayload("I love beans!");
+            blobstore.getBlobStore().putBlob(container, blob);
+        }
+        return contexts;
+    }
+
+    public void testClearTweets() throws IOException, InterruptedException, ExecutionException {
+        String container = ClearTweetsControllerTest.class.getName() + "#container";
+        Map<String, BlobStoreContext> contexts = createBlobStores(container);
+
+        ClearTweetsController controller = new ClearTweetsController(contexts,
+                container);
+        controller.clearContainer("test1");
+        controller.clearContainer("test2");
+
+        for (BlobStoreContext context : contexts.values()) {
+            assertEquals(context.getBlobStore().countBlobs(container), 0, context.toString());
+        }
+    }
+}