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2 parents 14ddc54 + b0850b9 commit 01ecbefCopy full SHA for 01ecbef
appengine/datastore/src/main/java/com/example/appengine/StatsServlet.java
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+/*
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+ * Copyright 2016 Google Inc. All Rights Reserved.
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+ *
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+ * Licensed under the Apache License, Version 2.0 (the "License");
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+ * you may not use this file except in compliance with the License.
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+ * You may obtain a copy of the License at
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+ * http://www.apache.org/licenses/LICENSE-2.0
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+ * Unless required by applicable law or agreed to in writing, software
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+ * distributed under the License is distributed on an "AS IS" BASIS,
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+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+ * See the License for the specific language governing permissions and
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+ * limitations under the License.
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+ */
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+
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+package com.example.appengine;
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+import com.google.appengine.api.datastore.DatastoreService;
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+import com.google.appengine.api.datastore.DatastoreServiceFactory;
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+import com.google.appengine.api.datastore.Entity;
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+import com.google.appengine.api.datastore.Query;
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+import java.io.IOException;
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+import java.io.PrintWriter;
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+import javax.servlet.ServletException;
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+import javax.servlet.http.HttpServlet;
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+import javax.servlet.http.HttpServletRequest;
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+import javax.servlet.http.HttpServletResponse;
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+public class StatsServlet extends HttpServlet {
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+ @Override
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+ protected void doGet(HttpServletRequest req, HttpServletResponse resp)
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+ throws ServletException, IOException {
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+ // [START stat_example]
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+ DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
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+ Entity globalStat = datastore.prepare(new Query("__Stat_Total__")).asSingleEntity();
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+ Long totalBytes = (Long) globalStat.getProperty("bytes");
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+ Long totalEntities = (Long) globalStat.getProperty("count");
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+ // [END stat_example]
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+ resp.setContentType("text/plain");
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+ resp.setCharacterEncoding("UTF-8");
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+ PrintWriter w = resp.getWriter();
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+ w.printf("%d bytes\n%d entities\n", totalBytes, totalEntities);
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+ }
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+}
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+// [END cursors]
appengine/datastore/src/main/webapp/WEB-INF/web.xml
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<servlet-name>projection</servlet-name>
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<url-pattern>/projection</url-pattern>
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</servlet-mapping>
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+ <servlet>
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+ <servlet-name>stats</servlet-name>
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+ <servlet-class>com.example.appengine.StatsServlet</servlet-class>
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+ </servlet>
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+ <servlet-mapping>
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+ <url-pattern>/stats</url-pattern>
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+ </servlet-mapping>
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<!-- Special handler to populate Datastore with default values. -->
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<servlet>
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<role-name>*</role-name> <!-- Require users to login. -->
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</auth-constraint>
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</security-constraint>
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+ <security-constraint>
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+ <web-resource-collection>
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+ <web-resource-name>profile</web-resource-name>
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+ </web-resource-collection>
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+ <user-data-constraint>
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+ <transport-guarantee>CONFIDENTIAL</transport-guarantee>
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+ </user-data-constraint>
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+ <auth-constraint>
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+ <role-name>admin</role-name>
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+ </auth-constraint>
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+ </security-constraint>
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</web-app>