Java Agent类代码示例

import sun.management.Agent; //导入依赖的package包/类
/**
 * In sun.management.Agent.loadManagementProperties(), call
 * properties.putAll API may fail with ConcurrentModifcationException if the
 * system properties are modified simultaneously by another thread
 *
 * @param args
 * @throws Exception
 */
public static void main(String[] args) throws Exception {
    System.out.println("Start...");

    final Properties properties = System.getProperties();
    Thread t1 = new Thread(new Runnable() {
        public void run() {
            for (int i = 0; i < 100; i++) {
                properties.put(String.valueOf(i), "");
                try {
                    Thread.sleep(1);
                } catch (InterruptedException e) {
                    // do nothing
                }
            }
        }
    });
    t1.start();

    for (int i = 0; i < 10000; i++) {
        Agent.loadManagementProperties();
    }

    System.out.println("Finished...");
}
 

import sun.management.Agent; //导入依赖的package包/类
public static void main(String[] args){
    String [][] testStrings = {
        {"agent.err.error", "", ""},
        {"jmxremote.ConnectorBootstrap.starting", "", ""},
        {"jmxremote.ConnectorBootstrap.noAuthentication", "", ""},
        {"jmxremote.ConnectorBootstrap.ready", "Phony JMXServiceURL", ""},
        {"jmxremote.ConnectorBootstrap.password.readonly", "Phony passwordFileName", ""},
    };

    boolean pass = true;
    System.out.println("Start...");
    for (int ii = 0; ii < testStrings.length; ii++) {
        String key = testStrings[ii][0];
        String p1 = testStrings[ii][1];
        String p2 = testStrings[ii][2];
        String ss = Agent.getText(key, p1, p2);
        if (ss.startsWith("missing resource key")) {
            pass = false;
            System.out.println("    lookup failed for key = " + key);
        }
    }
    if (!pass) {
        throw new Error ("Resource lookup(s) failed; Test failed");
    }
    System.out.println("...Finished.");
}
 

import sun.management.Agent; //导入依赖的package包/类
public static int getJmxPort(final Environment environment)
{
   Optional<Integer> jmxPort = Optional.empty();

   final Properties managementProperties = Agent.getManagementProperties();
   if (managementProperties != null)
   {
      final String portProperty = managementProperties.getProperty(JMX_PORT_PROPERTY);
      if (portProperty != null)
      {
         final Optional<Integer> port = Optional.ofNullable(Ints.tryParse(portProperty));
         jmxPort = port;
      }
   }
   return jmxPort.orElse(0);
}
 

import sun.management.Agent; //导入依赖的package包/类
/**
 * Initializes and starts the JMX Connector Server.
 * If the com.sun.management.jmxremote.port property is not defined,
 * simply return. Otherwise, attempts to load the config file, and
 * then calls {@link #initialize(java.lang.String, java.util.Properties)}.
 *
 **/
public static synchronized JMXConnectorServer initialize() {

    // Load a new management properties
    final Properties props = Agent.loadManagementProperties();
    if (props == null) {
        return null;
    }

    final String portStr = props.getProperty(PropertyNames.PORT);


    // System.out.println("initializing: {port=" + portStr + ",
    //                     properties="+props+"}");
    return initialize(portStr, props);
}
 

import sun.management.Agent; //导入依赖的package包/类
/**
 * Initializes and starts the JMX Connector Server.
 * If the com.sun.management.jmxremote.port property is not defined,
 * simply return. Otherwise, attempts to load the config file, and
 * then calls {@link #startRemoteConnectorServer
 *                            (java.lang.String, java.util.Properties)}.
 *
 * This method is used by some jtreg tests.
 **/
 public static synchronized JMXConnectorServer initialize() {

    // Load a new management properties
    final Properties props = Agent.loadManagementProperties();
    if (props == null) {
         return null;
    }

    final String portStr = props.getProperty(PropertyNames.PORT);
    return startRemoteConnectorServer(portStr, props);
}
 

import sun.management.Agent; //导入依赖的package包/类
private static void checkPasswordFile(String passwordFileName) {
    if (passwordFileName == null || passwordFileName.length() == 0) {
        throw new AgentConfigurationError(PASSWORD_FILE_NOT_SET);
    }
    File file = new File(passwordFileName);
    if (!file.exists()) {
        throw new AgentConfigurationError(PASSWORD_FILE_NOT_FOUND, passwordFileName);
    }

    if (!file.canRead()) {
        throw new AgentConfigurationError(PASSWORD_FILE_NOT_READABLE, passwordFileName);
    }

    FileSystem fs = FileSystem.open();
    try {
        if (fs.supportsFileSecurity(file)) {
            if (!fs.isAccessUserOnly(file)) {
                final String msg = Agent.getText("jmxremote.ConnectorBootstrap.password.readonly",
                        passwordFileName);
                log.config("startRemoteConnectorServer", msg);
                throw new AgentConfigurationError(PASSWORD_FILE_ACCESS_NOT_RESTRICTED,
                        passwordFileName);
            }
        }
    } catch (IOException e) {
        throw new AgentConfigurationError(PASSWORD_FILE_READ_FAILED,
                e, passwordFileName);
    }
}
 

import sun.management.Agent; //导入依赖的package包/类
private static void checkRestrictedFile(String restrictedFileName) {
    if (restrictedFileName == null || restrictedFileName.length() == 0) {
        throw new AgentConfigurationError(FILE_NOT_SET);
    }
    File file = new File(restrictedFileName);
    if (!file.exists()) {
        throw new AgentConfigurationError(FILE_NOT_FOUND, restrictedFileName);
    }
    if (!file.canRead()) {
        throw new AgentConfigurationError(FILE_NOT_READABLE, restrictedFileName);
    }
    FileSystem fs = FileSystem.open();
    try {
        if (fs.supportsFileSecurity(file)) {
            if (!fs.isAccessUserOnly(file)) {
                final String msg = Agent.getText(
                        "jmxremote.ConnectorBootstrap.file.readonly",
                        restrictedFileName);
                log.config("startRemoteConnectorServer", msg);
                throw new AgentConfigurationError(
                        FILE_ACCESS_NOT_RESTRICTED, restrictedFileName);
            }
        }
    } catch (IOException e) {
        throw new AgentConfigurationError(
                FILE_READ_FAILED, e, restrictedFileName);
    }
}
 

import sun.management.Agent; //导入依赖的package包/类
/**
 * Retrieve the Trap Target List from the ACL file.
 **/
@SuppressWarnings("unchecked")
private static List<NotificationTarget> getTargetList(InetAddressAcl acl,
                                                      int defaultTrapPort) {
    final ArrayList<NotificationTarget> result =
            new ArrayList<>();
    if (acl != null) {
        if (log.isDebugOn())
            log.debug("getTargetList",Agent.getText("jmxremote.AdaptorBootstrap.getTargetList.processing"));

        final Enumeration<InetAddress> td = acl.getTrapDestinations();
        for (; td.hasMoreElements() ;) {
            final InetAddress targetAddr = td.nextElement();
            final Enumeration<String> tc =
                acl.getTrapCommunities(targetAddr);
            for (;tc.hasMoreElements() ;) {
                final String community = tc.nextElement();
                final NotificationTarget target =
                    new NotificationTargetImpl(targetAddr,
                                               defaultTrapPort,
                                               community);
                if (log.isDebugOn())
                    log.debug("getTargetList",
                              Agent.getText("jmxremote.AdaptorBootstrap.getTargetList.adding",
                                            target.toString()));
                result.add(target);
            }
        }
    }
    return result;
}
 

import sun.management.Agent; //导入依赖的package包/类
/**
 * Initializes and starts the SNMP Adaptor Server.
 * If the com.sun.management.snmp.port property is not defined,
 * simply return. Otherwise, attempts to load the config file, and
 * then calls {@link #initialize(java.lang.String, java.util.Properties)}.
 *
 **/
public static synchronized AdaptorBootstrap initialize() {

    // Load a new properties
    final Properties props = Agent.loadManagementProperties();
    if (props == null) return null;

    final String portStr = props.getProperty(PropertyNames.PORT);

    return initialize(portStr,props);
}
 

import sun.management.Agent; //导入依赖的package包/类
public static void main(String[] args){
    String [][] testStrings = {
        {"agent.err.error", "", ""},
        {"jmxremote.ConnectorBootstrap.starting", "", ""},
        {"jmxremote.ConnectorBootstrap.noAuthentication", "", ""},
        {"jmxremote.ConnectorBootstrap.ready", "Phony JMXServiceURL", ""},
        {"jmxremote.ConnectorBootstrap.password.readonly", "Phony passwordFileName", ""},
        {"jmxremote.AdaptorBootstrap.getTargetList.processing", "", ""},
        {"jmxremote.AdaptorBootstrap.getTargetList.adding", "Phony target", ""},
        {"jmxremote.AdaptorBootstrap.getTargetList.starting", "", ""},
        {"jmxremote.AdaptorBootstrap.getTargetList.initialize1", "", ""},
        {"jmxremote.AdaptorBootstrap.getTargetList.initialize2", "Phony hostname", "Phony port"},
        {"jmxremote.AdaptorBootstrap.getTargetList.terminate", "Phony exception", ""},
    };

    boolean pass = true;
    System.out.println("Start...");
    for (int ii = 0; ii < testStrings.length; ii++) {
        String key = testStrings[ii][0];
        String p1 = testStrings[ii][1];
        String p2 = testStrings[ii][2];
        String ss = Agent.getText(key, p1, p2);
        if (ss.startsWith("missing resource key")) {
            pass = false;
            System.out.println("    lookup failed for key = " + key);
        }
    }
    if (!pass) {
        throw new Error ("Resource lookup(s) failed; Test failed");
    }
    System.out.println("...Finished.");
}