jdk/src/jdk.management.agent/share/classes/sun/management/jdp/JdpJmxPacket.java
changeset 43494 11801b2ff456
parent 25859 3317bb8137f4
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/jdk.management.agent/share/classes/sun/management/jdp/JdpJmxPacket.java	Tue Jan 31 20:06:32 2017 -0800
@@ -0,0 +1,245 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package sun.management.jdp;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+import java.util.UUID;
+
+/**
+ * A packet to broadcasts JMX URL
+ *
+ * Fields:
+ *
+ * <ul>
+ * <li>UUID - broadcast session ID, changed every time when we start/stop
+ * discovery service</li>
+ * <li>JMX_URL - URL to connect to JMX service</li>
+ * <li>MAIN_CLASS - optional name of main class, filled from sun.java.command stripped for
+ * security reason to first space</li>
+ * <li>INSTANCE_NAME - optional custom name of particular instance as provided by customer</li>
+ * </ul>
+ */
+public final class JdpJmxPacket
+       extends JdpGenericPacket
+       implements JdpPacket {
+
+    /**
+     * Session ID
+     */
+    public final static String UUID_KEY = "DISCOVERABLE_SESSION_UUID";
+    /**
+     * Name of main class
+     */
+    public final static String MAIN_CLASS_KEY = "MAIN_CLASS";
+    /**
+     * JMX service URL
+     */
+    public final static String JMX_SERVICE_URL_KEY = "JMX_SERVICE_URL";
+    /**
+     * Name of Java instance
+     */
+    public final static String INSTANCE_NAME_KEY = "INSTANCE_NAME";
+    /**
+     * PID of java process, optional presented if it could be obtained
+     */
+    public final static String PROCESS_ID_KEY = "PROCESS_ID";
+    /**
+     * Hostname of rmi server, optional presented if user overrides rmi server
+     * hostname by java.rmi.server.hostname property
+     */
+    public final static String RMI_HOSTNAME_KEY = "RMI_HOSTNAME";
+    /**
+     * Configured broadcast interval, optional
+     */
+    public final static String BROADCAST_INTERVAL_KEY = "BROADCAST_INTERVAL";
+
+    private UUID id;
+    private String mainClass;
+    private String jmxServiceUrl;
+    private String instanceName;
+    private String processId;
+    private String rmiHostname;
+    private String broadcastInterval;
+
+    /**
+     * Create new instance from user provided data. Set mandatory fields
+     *
+     * @param id - java instance id
+     * @param jmxServiceUrl - JMX service url
+     */
+    public JdpJmxPacket(UUID id, String jmxServiceUrl) {
+        this.id = id;
+        this.jmxServiceUrl = jmxServiceUrl;
+    }
+
+    /**
+     * Create new instance from network data Parse packet and set fields.
+     *
+     * @param data - raw packet data as it came from a Net
+     * @throws JdpException
+     */
+    public JdpJmxPacket(byte[] data)
+            throws JdpException {
+        JdpPacketReader reader;
+
+        reader = new JdpPacketReader(data);
+        Map<String, String> p = reader.getDiscoveryDataAsMap();
+
+        String sId = p.get(UUID_KEY);
+        this.id = (sId == null) ? null : UUID.fromString(sId);
+        this.jmxServiceUrl = p.get(JMX_SERVICE_URL_KEY);
+        this.mainClass = p.get(MAIN_CLASS_KEY);
+        this.instanceName = p.get(INSTANCE_NAME_KEY);
+        this.processId = p.get(PROCESS_ID_KEY);
+        this.rmiHostname = p.get(RMI_HOSTNAME_KEY);
+        this.broadcastInterval = p.get(BROADCAST_INTERVAL_KEY);
+    }
+
+    /**
+     * Set main class field
+     *
+     * @param mainClass - main class of running app
+     */
+    public void setMainClass(String mainClass) {
+        this.mainClass = mainClass;
+    }
+
+    /**
+     * Set instance name field
+     *
+     * @param instanceName - name of instance as provided by customer
+     */
+    public void setInstanceName(String instanceName) {
+        this.instanceName = instanceName;
+    }
+
+    /**
+     * @return id of discovery session
+     */
+    public UUID getId() {
+        return id;
+    }
+
+    /**
+     *
+     * @return main class field
+     */
+    public String getMainClass() {
+        return mainClass;
+    }
+
+    /**
+     *
+     * @return JMX service URL
+     */
+    public String getJmxServiceUrl() {
+        return jmxServiceUrl;
+    }
+
+    /**
+     *
+     * @return instance name
+     */
+    public String getInstanceName() {
+        return instanceName;
+    }
+
+    public String getProcessId() {
+        return processId;
+    }
+
+    public void setProcessId(String processId) {
+        this.processId = processId;
+    }
+
+    public String getRmiHostname() {
+        return rmiHostname;
+    }
+
+    public void setRmiHostname(String rmiHostname) {
+        this.rmiHostname = rmiHostname;
+    }
+
+    public String getBroadcastInterval() {
+        return broadcastInterval;
+    }
+
+    public void setBroadcastInterval(String broadcastInterval) {
+        this.broadcastInterval = broadcastInterval;
+    }
+
+    /**
+     *
+     * @return assembled packet ready to be sent across a Net
+     * @throws IOException
+     */
+    @Override
+    public byte[] getPacketData() throws IOException {
+        // Assemble packet from fields to byte array
+        JdpPacketWriter writer;
+        writer = new JdpPacketWriter();
+        writer.addEntry(UUID_KEY, (id == null) ? null : id.toString());
+        writer.addEntry(MAIN_CLASS_KEY, mainClass);
+        writer.addEntry(JMX_SERVICE_URL_KEY, jmxServiceUrl);
+        writer.addEntry(INSTANCE_NAME_KEY, instanceName);
+        writer.addEntry(PROCESS_ID_KEY, processId);
+        writer.addEntry(RMI_HOSTNAME_KEY, rmiHostname);
+        writer.addEntry(BROADCAST_INTERVAL_KEY, broadcastInterval);
+
+        return writer.getPacketBytes();
+    }
+
+    /**
+     *
+     * @return packet hash code
+     */
+    @Override
+    public int hashCode() {
+        int hash = 1;
+        hash = hash * 31 + id.hashCode();
+        hash = hash * 31 + jmxServiceUrl.hashCode();
+        return hash;
+    }
+
+    /**
+     * Compare two packets
+     *
+     * @param o - packet to compare
+     * @return either packet equals or not
+     */
+    @Override
+    public boolean equals(Object o) {
+
+        if (o == null || ! (o instanceof JdpJmxPacket) ){
+            return false;
+        }
+
+        JdpJmxPacket p = (JdpJmxPacket) o;
+        return  Objects.equals(id, p.getId()) && Objects.equals(jmxServiceUrl, p.getJmxServiceUrl());
+    }
+}