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From r...@apache.org
Subject svn commit: r1850271 - in /tomcat/trunk: java/org/apache/catalina/valves/HealthCheckValve.java webapps/docs/changelog.xml
Date Thu, 03 Jan 2019 23:06:38 GMT
Author: remm
Date: Thu Jan  3 23:06:38 2019
New Revision: 1850271

URL: http://svn.apache.org/viewvc?rev=1850271&view=rev
Log:
Add very simple health check valve.

Added:
    tomcat/trunk/java/org/apache/catalina/valves/HealthCheckValve.java   (with props)
Modified:
    tomcat/trunk/webapps/docs/changelog.xml

Added: tomcat/trunk/java/org/apache/catalina/valves/HealthCheckValve.java
URL: http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/valves/HealthCheckValve.java?rev=1850271&view=auto
==============================================================================
--- tomcat/trunk/java/org/apache/catalina/valves/HealthCheckValve.java (added)
+++ tomcat/trunk/java/org/apache/catalina/valves/HealthCheckValve.java Thu Jan  3 23:06:38
2019
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF 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.apache.catalina.valves;
+
+import java.io.IOException;
+
+import javax.servlet.ServletException;
+
+import org.apache.catalina.connector.Request;
+import org.apache.catalina.connector.Response;
+import org.apache.tomcat.util.buf.MessageBytes;
+
+
+/**
+ * Simple Valve that responds to cloud orchestrators health checks.
+ */
+public class HealthCheckValve extends ValveBase {
+
+    private static final String UP =
+            "{\n" +
+            "  \"status\": \"UP\",\n" +
+            "  \"checks\": []\n" +
+            "}";
+    private String path = "/health";
+
+    public HealthCheckValve() {
+        super(true);
+    }
+
+    public final String getPath() {
+        return path;
+    }
+
+    public final void setPath(String path) {
+        this.path = path;
+    }
+
+    @Override
+    public void invoke(Request request, Response response)
+            throws IOException, ServletException {
+        MessageBytes requestPathMB = request.getRequestPathMB();
+        if (requestPathMB.equals(path)) {
+            response.setContentType("application/json");
+            response.getOutputStream().print(UP);
+        } else {
+            getNext().invoke(request, response);
+        }
+    }
+}

Propchange: tomcat/trunk/java/org/apache/catalina/valves/HealthCheckValve.java
------------------------------------------------------------------------------
    svn:eol-style = native

Modified: tomcat/trunk/webapps/docs/changelog.xml
URL: http://svn.apache.org/viewvc/tomcat/trunk/webapps/docs/changelog.xml?rev=1850271&r1=1850270&r2=1850271&view=diff
==============================================================================
--- tomcat/trunk/webapps/docs/changelog.xml (original)
+++ tomcat/trunk/webapps/docs/changelog.xml Thu Jan  3 23:06:38 2019
@@ -77,6 +77,9 @@
         URL may be used for the <code>docBase</code> as this has not been the
         case for quite some time. (markt)
       </fix>
+      <update>
+        Add basic health check valve. (remm)
+      </update>
     </changelog>
   </subsection>
   <subsection name="Coyote">



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