org.apache.geode.internal.cache.CacheServerLauncher Maven / Gradle / Ivy
Show all versions of geode-core Show documentation
/*
* 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.geode.internal.cache;
import org.apache.geode.SystemFailure;
import org.apache.geode.cache.Cache;
import org.apache.geode.cache.CacheFactory;
import org.apache.geode.cache.partition.PartitionRegionHelper;
import org.apache.geode.cache.server.CacheServer;
import org.apache.geode.distributed.ConfigurationProperties;
import org.apache.geode.distributed.DistributedSystem;
import org.apache.geode.distributed.internal.DistributionConfig;
import org.apache.geode.distributed.internal.DistributionConfigImpl;
import org.apache.geode.distributed.internal.InternalDistributedSystem;
import org.apache.geode.i18n.LogWriterI18n;
import org.apache.geode.internal.OSProcess;
import org.apache.geode.internal.PureJavaMode;
import org.apache.geode.internal.net.SocketCreator;
import org.apache.geode.internal.cache.tier.sockets.CacheServerHelper;
import org.apache.geode.internal.i18n.LocalizedStrings;
import org.apache.geode.internal.process.StartupStatus;
import org.apache.geode.internal.process.StartupStatusListener;
import org.apache.geode.internal.util.IOUtils;
import org.apache.geode.internal.util.JavaCommandBuilder;
import java.io.*;
import java.net.URL;
import java.util.*;
import java.util.concurrent.TimeUnit;
import static org.apache.geode.distributed.ConfigurationProperties.LOG_FILE;
import static org.apache.geode.distributed.ConfigurationProperties.SERVER_BIND_ADDRESS;
/**
* Launcher program to start a cache server.
*
*
* @since GemFire 2.0.2
*/
public class CacheServerLauncher {
/** Is this VM a dedicated Cache Server? This value is used mainly by the admin API. */
public static boolean isDedicatedCacheServer =
Boolean.getBoolean(DistributionConfig.GEMFIRE_PREFIX + "isDedicatedServer");
public static boolean ASSIGN_BUCKETS = Boolean.getBoolean(
DistributionConfig.GEMFIRE_PREFIX + "CacheServerLauncher.assignBucketsToPartitions");
// default is to exit if property not defined
public static boolean DONT_EXIT_AFTER_LAUNCH = Boolean
.getBoolean(DistributionConfig.GEMFIRE_PREFIX + "CacheServerLauncher.dontExitAfterLaunch");
/** Should the launch command be printed? */
public static final boolean PRINT_LAUNCH_COMMAND =
Boolean.getBoolean(CacheServerLauncher.class.getSimpleName() + ".PRINT_LAUNCH_COMMAND");
private static final long STATUS_WAIT_TIME = Long.getLong(
DistributionConfig.GEMFIRE_PREFIX + "CacheServerLauncher.STATUS_WAIT_TIME_MS", 15000);
/** How long to wait for a cache server to stop */
private static final long SHUTDOWN_WAIT_TIME = Long.getLong(
DistributionConfig.GEMFIRE_PREFIX + "CacheServerLauncher.SHUTDOWN_WAIT_TIME_MS", 20000);
protected final String baseName;
protected final String defaultLogFileName;
protected final String startLogFileName;
protected final String statusName;
protected Status status = null;
protected File workingDir = null;
protected PrintStream oldOut = System.out;
protected PrintStream oldErr = System.err;
protected LogWriterI18n logger = null;
protected String maxHeapSize;
protected String initialHeapSize;
protected String offHeapSize;
public static final int SHUTDOWN = 0;
public static final int STARTING = 1;
public static final int RUNNING = 2;
public static final int SHUTDOWN_PENDING = 3;
private static final int FORCE_STATUS_FILE_READ_ITERATION_COUNT = 10;
public CacheServerLauncher(final String baseName) {
assert baseName != null : "The base name used for the cache server launcher files cannot be null!";
this.baseName = baseName;
final String baseNameLowerCase = baseName.toLowerCase().replace(" ", "");
this.startLogFileName = "start_" + baseNameLowerCase + ".log";
this.defaultLogFileName = baseNameLowerCase + ".log";
this.statusName = "." + baseNameLowerCase + ".ser";
}
protected static Status createStatus(final String baseName, final int state, final int pid) {
return createStatus(baseName, state, pid, null, null);
}
protected static Status createStatus(final String baseName, final int state, final int pid,
final String msg, final Throwable t) {
final Status status = new Status(baseName);
status.state = state;
status.pid = pid;
status.msg = msg;
status.exception = t;
return status;
}
/**
* Prints usage information about this program.
*/
protected void usage() {
PrintStream out = System.out;
out.println(
"cacheserver start [-J]* [=]* [-dir=] [-classpath=] [-disable-default-server] [-rebalance] [-lock-memory] [-server-port=] [-server-bind-address=] [-critical-heap-percentage=] [-eviction-heap-percentage=] [-critical-off-heap-percentage=] [-eviction-off-heap-percentage=]\n");
out.println("\t"
+ LocalizedStrings.CacheServerLauncher_STARTS_A_GEMFIRE_CACHESERVER_VM.toLocalizedString());
out.println("\t" + LocalizedStrings.CacheServerLauncher_VMARG.toLocalizedString());
out.println("\t" + LocalizedStrings.CacheServerLauncher_DIR.toLocalizedString());
out.println("\t" + LocalizedStrings.CacheServerLauncher_CLASSPATH.toLocalizedString());
out.println("\t" + LocalizedStrings.CacheServerLauncher_ATTNAME.toLocalizedString());
out.println("\t" + LocalizedStrings.CacheServerLauncher_REBALANCE.toLocalizedString());
out.println(
"\t" + LocalizedStrings.CacheServerLauncher_DISABLE_DEFAULT_SERVER.toLocalizedString());
out.println("\t" + LocalizedStrings.CacheServerLauncher_SERVER_PORT.toLocalizedString());
out.println(
"\t" + LocalizedStrings.CacheServerLauncher_SERVER_BIND_ADDRESS.toLocalizedString());
out.println(
"\t" + LocalizedStrings.CacheServerLauncher_CRITICAL_HEAP_PERCENTAGE.toLocalizedString());
out.println(
"\t" + LocalizedStrings.CacheServerLauncher_EVICTION_HEAP_PERCENTAGE.toLocalizedString());
out.println("\t"
+ LocalizedStrings.CacheServerLauncher_CRITICAL_OFF_HEAP_PERCENTAGE.toLocalizedString());
out.println("\t"
+ LocalizedStrings.CacheServerLauncher_EVICTION_OFF_HEAP_PERCENTAGE.toLocalizedString());
out.println("\t" + LocalizedStrings.CacheServerLauncher_LOCK_MEMORY.toLocalizedString());
out.println();
out.println("cacheserver stop [-dir=]");
out.println("\t"
+ LocalizedStrings.CacheServerLauncher_STOPS_A_GEMFIRE_CACHESERVER_VM.toLocalizedString());
out.println("\t" + LocalizedStrings.CacheServerLauncher_DIR.toLocalizedString());
out.println();
out.println("cacheserver status [-dir=]");
out.println("\t" + LocalizedStrings.CacheServerLauncher_STATUS.toLocalizedString());
out.println("\t" + LocalizedStrings.CacheServerLauncher_DIR.toLocalizedString());
}
/**
* Prints the status of the cache server running the configured working directory.
*/
protected void status(final String[] args) throws Exception {
workingDir = (File) getStopOptions(args).get(DIR);
System.out.println(getStatus());
System.exit(0);
}
/**
* Returns the Status of the cache server in the workingDir.
*/
protected Status getStatus() throws Exception {
Status status;
if (new File(workingDir, statusName).exists()) {
status = spinReadStatus(); // See bug 32456
} else {
// no pid since the cache server is not running
status = createStatus(this.baseName, SHUTDOWN, 0);
}
return status;
}
/**
* Main method that parses the command line and performs an will start, stop, or get the status of
* a cache server. This main method is also the main method of the launched cacher server VM
* ("server" mode).
*/
public static void main(final String[] args) {
final CacheServerLauncher launcher = new CacheServerLauncher("CacheServer");
boolean inServer = false;
try {
if (args.length > 0) {
if (args[0].equalsIgnoreCase("start")) {
launcher.start(args);
} else if (args[0].equalsIgnoreCase("server")) {
inServer = true;
launcher.server(args);
} else if (args[0].equalsIgnoreCase("stop")) {
launcher.stop(args);
} else if (args[0].equalsIgnoreCase("status")) {
launcher.status(args);
} else {
launcher.usage();
System.exit(1);
}
} else {
launcher.usage();
System.exit(1);
}
throw new Exception(LocalizedStrings.CacheServerLauncher_INTERNAL_ERROR_SHOULDNT_REACH_HERE
.toLocalizedString());
} catch (VirtualMachineError err) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
} catch (Throwable t) {
// Whenever you catch Error or Throwable, you must also
// catch VirtualMachineError (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
t.printStackTrace();
if (inServer) {
launcher.setServerError(
LocalizedStrings.CacheServerLauncher_ERROR_STARTING_SERVER_PROCESS.toLocalizedString(),
t);
}
launcher.restoreStdOut();
if (launcher.logger != null) {
launcher.logger.severe(LocalizedStrings.CacheServerLauncher_CACHE_SERVER_ERROR, t);
} else {
System.out.println(
LocalizedStrings.CacheServerLauncher_ERROR_0.toLocalizedString(t.getMessage()));
}
System.exit(1);
}
}
protected void restoreStdOut() {
System.setErr(oldErr);
System.setOut(oldOut);
}
protected static final String DIR = "dir";
protected static final String VMARGS = "vmargs";
protected static final String PROPERTIES = "properties";
protected static final String CLASSPATH = "classpath";
protected static final String REBALANCE = "rebalance";
protected static final String SERVER_PORT = "server-port";
protected static final String SERVER_BIND_ADDRESS_NAME = SERVER_BIND_ADDRESS;
protected static final String DISABLE_DEFAULT_SERVER = "disable-default-server";
public static final String CRITICAL_HEAP_PERCENTAGE = "critical-heap-percentage";
public static final String EVICTION_HEAP_PERCENTAGE = "eviction-heap-percentage";
public static final String CRITICAL_OFF_HEAP_PERCENTAGE = "critical-off-heap-percentage";
public static final String EVICTION_OFF_HEAP_PERCENTAGE = "eviction-off-heap-percentage";
protected static final String LOCK_MEMORY = ConfigurationProperties.LOCK_MEMORY;
protected final File processDirOption(final Map options, final String dirValue)
throws FileNotFoundException {
final File inputWorkingDirectory = new File(dirValue);
if (!inputWorkingDirectory.exists()) {
throw new FileNotFoundException(
LocalizedStrings.CacheServerLauncher_THE_INPUT_WORKING_DIRECTORY_DOES_NOT_EXIST_0
.toLocalizedString(dirValue));
}
options.put(DIR, inputWorkingDirectory);
return inputWorkingDirectory;
}
/**
* Populates a map that maps the name of the start options such as {@link #DIR} to its value on
* the command line. If no value is specified on the command line, a default one is provided.
*/
protected Map getStartOptions(String[] args) throws Exception {
final Map options = new HashMap();
options.put(DIR, new File(System.getProperty("user.dir")));
final List vmArgs = new ArrayList();
options.put(VMARGS, vmArgs);
final Properties props = new Properties();
options.put(PROPERTIES, props);
for (final String arg : args) {
if (arg.equals("start")) {
// expected
} else if (arg.startsWith("-classpath=")) {
options.put(CLASSPATH, arg.substring(arg.indexOf("=") + 1));
} else if (arg.startsWith("-dir=")) {
processDirOption(options, arg.substring(arg.indexOf("=") + 1));
} else if (arg.startsWith("-disable-default-server")) {
options.put(DISABLE_DEFAULT_SERVER, arg);
} else if (arg.startsWith("-lock-memory")) {
if (System.getProperty("os.name").indexOf("Windows") >= 0) {
throw new IllegalArgumentException("Unable to lock memory on this operating system");
}
props.put(LOCK_MEMORY, "true");
} else if (arg.startsWith("-rebalance")) {
options.put(REBALANCE, Boolean.TRUE);
} else if (arg.startsWith("-server-port")) {
options.put(SERVER_PORT, arg);
} else if (arg.startsWith("-" + CRITICAL_HEAP_PERCENTAGE)) {
options.put(CRITICAL_HEAP_PERCENTAGE, arg);
} else if (arg.startsWith("-" + EVICTION_HEAP_PERCENTAGE)) {
options.put(EVICTION_HEAP_PERCENTAGE, arg);
} else if (arg.startsWith("-" + CRITICAL_OFF_HEAP_PERCENTAGE)) {
options.put(CRITICAL_OFF_HEAP_PERCENTAGE, arg);
} else if (arg.startsWith("-" + EVICTION_OFF_HEAP_PERCENTAGE)) {
options.put(EVICTION_OFF_HEAP_PERCENTAGE, arg);
} else if (arg.startsWith("-server-bind-address")) {
options.put(SERVER_BIND_ADDRESS_NAME, arg);
} else if (arg.startsWith("-J")) {
String vmArg = arg.substring(2);
if (vmArg.startsWith("-Xmx")) {
this.maxHeapSize = vmArg.substring(4);
} else if (vmArg.startsWith("-Xms")) {
this.initialHeapSize = vmArg.substring(4);
}
vmArgs.add(vmArg);
}
// moved this default block down so that "-J" like options can have '=' in them.
// an 'indexOf' the assignment operator with greater than 0 ensures a non-empty String key
// value
else if (arg.indexOf("=") > 0) {
final int assignmentIndex = arg.indexOf("=");
final String key = arg.substring(0, assignmentIndex);
final String value = arg.substring(assignmentIndex + 1);
if (key.startsWith("-")) {
processStartOption(key.substring(1), value, options, vmArgs, props);
} else {
processStartArg(key, value, options, vmArgs, props);
}
} else {
throw new IllegalArgumentException(
LocalizedStrings.CacheServerLauncher_UNKNOWN_ARGUMENT_0.toLocalizedString(arg));
}
}
// -J-Djava.awt.headless=true has been added for Mac platform where it
// causes an icon to appear for launched procs
// TODO: check which library/GemFire code causes awt to be touched
vmArgs.add("-Djava.awt.headless=true");
// configure commons-logging to use JDK logging
vmArgs.add("-Dorg.apache.commons.logging.Log=org.apache.commons.logging.impl.Jdk14Logger");
options.put(VMARGS, vmArgs);
return options;
}
/**
* Process a command-line options of the form "key=value".
*/
protected void processStartArg(final String key, final String value,
final Map options, final List vmArgs, final Properties props)
throws Exception {
props.setProperty(key, value);
}
/**
* Process a command-line option of the form "-key=value".
*/
protected void processStartOption(final String key, final String value,
final Map options, final List vmArgs, final Properties props)
throws Exception {
processUnknownStartOption(key, value, options, vmArgs, props);
}
/**
* Process a command-line option of the form "-key=value" unknown to the base class.
*/
protected void processUnknownStartOption(final String key, final String value,
final Map options, final List vmArgs, final Properties props) {
throw new IllegalArgumentException(
LocalizedStrings.CacheServerLauncher_UNKNOWN_ARGUMENT_0.toLocalizedString(key));
}
/**
* Extracts configuration information used when launching the cache server VM.
*/
protected Map getServerOptions(final String[] args) throws Exception {
final Map options = new HashMap();
options.put(DIR, new File("."));
workingDir = (File) options.get(DIR);
final Properties props = new Properties();
options.put(PROPERTIES, props);
for (final String arg : args) {
if (arg.equals("server")) {
// expected
} else if (arg.startsWith("-dir=")) {
this.workingDir = processDirOption(options, arg.substring(arg.indexOf("=") + 1));
} else if (arg.startsWith("-rebalance")) {
options.put(REBALANCE, Boolean.TRUE);
} else if (arg.startsWith("-disable-default-server")) {
options.put(DISABLE_DEFAULT_SERVER, Boolean.TRUE);
} else if (arg.startsWith("-lock-memory")) {
props.put(LOCK_MEMORY, "true");
} else if (arg.startsWith("-server-port")) {
options.put(SERVER_PORT, arg.substring(arg.indexOf("=") + 1));
} else if (arg.startsWith("-server-bind-address")) {
options.put(SERVER_BIND_ADDRESS_NAME, arg.substring(arg.indexOf("=") + 1));
} else if (arg.startsWith("-" + CRITICAL_HEAP_PERCENTAGE)) {
options.put(CRITICAL_HEAP_PERCENTAGE, arg.substring(arg.indexOf("=") + 1));
} else if (arg.startsWith("-" + EVICTION_HEAP_PERCENTAGE)) {
options.put(EVICTION_HEAP_PERCENTAGE, arg.substring(arg.indexOf("=") + 1));
} else if (arg.startsWith("-" + CRITICAL_OFF_HEAP_PERCENTAGE)) {
options.put(CRITICAL_OFF_HEAP_PERCENTAGE, arg.substring(arg.indexOf("=") + 1));
} else if (arg.startsWith("-" + EVICTION_OFF_HEAP_PERCENTAGE)) {
options.put(EVICTION_OFF_HEAP_PERCENTAGE, arg.substring(arg.indexOf("=") + 1));
} else if (arg.indexOf("=") > 1) {
final int assignmentIndex = arg.indexOf("=");
final String key = arg.substring(0, assignmentIndex);
final String value = arg.substring(assignmentIndex + 1);
if (key.startsWith("-")) {
options.put(key.substring(1), value);
} else {
props.setProperty(key, value);
}
} else {
throw new IllegalArgumentException(
LocalizedStrings.CacheServerLauncher_UNKNOWN_ARGUMENT_0.toLocalizedString(arg));
}
}
return options;
}
/**
* Extracts configuration information for stopping a cache server based on the contents of the
* command-line. This method can also be used with getting the status of a cache server.
*/
protected Map getStopOptions(final String[] args) throws Exception {
final Map options = new HashMap();
options.put(DIR, new File("."));
for (final String arg : args) {
if (arg.equals("stop") || arg.equals("status")) {
// expected
} else if (arg.startsWith("-dir=")) {
processDirOption(options, arg.substring(arg.indexOf("=") + 1));
} else {
throw new IllegalArgumentException(
LocalizedStrings.CacheServerLauncher_UNKNOWN_ARGUMENT_0.toLocalizedString(arg));
}
}
return options;
}
/**
* Configures and spawns a VM that hosts a cache server. Any output generated while starting the
* VM will be placed in a special {@linkplain #startLogFileName log file}.
*
* See #getStartOptions
*
* @see OSProcess#bgexec(String[], File, File, boolean, Map)
*/
public void start(final String[] args) throws Exception {
final Map options = getStartOptions(args);
workingDir = (File) options.get(DIR);
// Complain if a cache server is already running in the specified working directory.
// See bug 32574.
verifyAndClearStatus();
// start the GemFire Cache Server proces...
runCommandLine(options, buildCommandLine(options));
// wait for status.state == RUNNING
waitForRunning();
if (DONT_EXIT_AFTER_LAUNCH) {
return;
}
System.exit(0);
}
private void verifyAndClearStatus() throws Exception {
final Status status = getStatus();
if (status != null && status.state != SHUTDOWN) {
throw new IllegalStateException(
LocalizedStrings.CacheServerLauncher_A_0_IS_ALREADY_RUNNING_IN_DIRECTORY_1_2
.toLocalizedString(this.baseName, workingDir, status));
}
deleteStatus();
}
private String[] buildCommandLine(final Map options) {
final List commandLine = JavaCommandBuilder.buildCommand(this.getClass().getName(),
(String) options.get(CLASSPATH), null, (List) options.get(VMARGS));
commandLine.add("server");
addToServerCommand(commandLine, options);
return commandLine.toArray(new String[commandLine.size()]);
}
private void printCommandLine(final String[] commandLine) {
if (PRINT_LAUNCH_COMMAND) {
System.out.println("Starting " + this.baseName + " with command:");
for (final String command : commandLine) {
System.out.print(command);
System.out.print(" ");
}
System.out.println();
}
}
private int runCommandLine(final Map options, final String[] commandLine)
throws Exception {
final File startLogFile = new File(workingDir, startLogFileName).getAbsoluteFile(); // see bug
// 32548
if (startLogFile.exists() && !startLogFile.delete()) {
throw new IOException(
"Unable to delete start log file (" + startLogFile.getAbsolutePath() + ")!");
}
Map env = new HashMap();
// read the passwords from command line
SocketCreator.readSSLProperties(env);
printCommandLine(commandLine);
final int pid = OSProcess.bgexec(commandLine, workingDir, startLogFile, false, env);
printStartMessage(options, pid);
return pid;
}
protected void printStartMessage(final Map options, final int pid)
throws Exception {
System.out.println(LocalizedStrings.CacheServerLauncher_STARTING_0_WITH_PID_1
.toLocalizedString(this.baseName, pid));
}
/**
* Sets the status of the cache server to be {@link #RUNNING}.
*/
public void running() {
try {
writeStatus(createStatus(this.baseName, RUNNING, OSProcess.getId()));
} catch (Exception e) {
e.printStackTrace();
}
}
public static ThreadLocal serverPort = new ThreadLocal();
public static ThreadLocal serverBindAddress = new ThreadLocal();
public static Integer getServerPort() {
return serverPort.get();
}
public static String getServerBindAddress() {
return serverBindAddress.get();
}
public static ThreadLocal disableDefaultServer = new ThreadLocal();
public static Boolean getDisableDefaultServer() {
return disableDefaultServer.get();
}
public static void clearStatics() {
disableDefaultServer.set(null);
serverPort.set(null);
serverBindAddress.set(null);
}
/**
* The method that does the work of being a cache server. It is invoked in the VM spawned by the
* {@link #start} method. Basically, it creates a GemFire {@link Cache} based on configuration
* passed in from the command line. (It will also take gemfire.properties, etc. into
* account, just like an application cache.)
*
*
*
* After creating the cache and setting the server's status to {@link #RUNNING}, it periodically
* monitors the status, waiting for it to change to {@link #SHUTDOWN_PENDING} (see {@link #stop}).
* When the status does change, it closes the Cache and sets the status to be
* {@link #SHUTDOWN}.
*
* @param args Configuration options passed in from the command line
*/
@edu.umd.cs.findbugs.annotations.SuppressWarnings(
value = "ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD")
public void server(final String[] args) throws Exception {
isDedicatedCacheServer = true;
SystemFailure.setExitOK(true);
final Map options = getServerOptions(args);
final String serverPortString = (String) options.get(SERVER_PORT);
if (serverPortString != null) {
serverPort.set(Integer.parseInt(serverPortString));
}
serverBindAddress.set((String) options.get(SERVER_BIND_ADDRESS_NAME));
disableDefaultServer.set((Boolean) options.get(DISABLE_DEFAULT_SERVER));
workingDir = new File(System.getProperty("user.dir"));
// Say that we're starting...
Status originalStatus = createStatus(this.baseName, STARTING, OSProcess.getId());
status = originalStatus;
writeStatus(status);
// Connect to the distributed system. The properties will
// properly configure logging, the declarative caching file, etc.
final Properties props = (Properties) options.get(PROPERTIES);
if (props.getProperty(LOG_FILE) == null && CacheServerLauncher.isLoggingToStdOut()) {
// Check First if the gemfire.properties set the log-file. If they do, we shouldn't override
// that default
final Properties gemfireProperties = new Properties();
DistributionConfigImpl.loadGemFireProperties(gemfireProperties);
if (gemfireProperties.get(LOG_FILE) == null) {
// Do not allow the cache server to log to stdout, override the logger with
// #defaultLogFileName
props.setProperty(LOG_FILE, defaultLogFileName);
}
}
InternalDistributedSystem system = this.connect(props);
installLogListener();
logger = system.getLogWriter().convertToLogWriterI18n();
// redirect output to the log file
OSProcess.redirectOutput(system.getConfig().getLogFile());
Cache cache = this.createCache(system, options);
cache.setIsServer(true);
startAdditionalServices(cache, options);
this.running();
clearLogListener();
if (ASSIGN_BUCKETS) {
for (PartitionedRegion region : ((GemFireCacheImpl) cache).getPartitionedRegions()) {
PartitionRegionHelper.assignBucketsToPartitions(region);
}
}
if (Boolean.TRUE.equals(options.get(REBALANCE))) {
cache.getResourceManager().createRebalanceFactory().start();
}
File statusFile = new File(workingDir, statusName);
long lastModified = 0, oldModified = statusFile.lastModified();
// Every FORCE_STATUS_FILE_READ_ITERATION_COUNT iterations, read the status file despite the
// modification time
// to catch situations where the file is modified quicker than the file timestamp's resolution.
short count = 0;
boolean loggedWarning = false;
while (true) {
lastModified = statusFile.lastModified();
if (lastModified > oldModified || count++ == FORCE_STATUS_FILE_READ_ITERATION_COUNT) {
count = 0;
Thread.sleep(500); // allow for it to be finished writing.
// Sometimes the status file is partially written causing readObject to
// fail, sleep and retry.
try {
status = readStatus();
} catch (IOException ioeSecondChance) {
Thread.sleep(1000);
try {
status = readStatus();
} catch (IOException ioeThirdChance) {
Thread.sleep(5000);
try {
status = readStatus();
} catch (FileNotFoundException fnfe) {
// See bug 44627.
// The cache server used to just shutdown at this point. Instead,
// recreate the status file if possible and continue.
status = createStatus(this.baseName, RUNNING, originalStatus.pid);
try {
writeStatus(status);
} catch (FileNotFoundException e) {
if (!loggedWarning) {
logger.warning(LocalizedStrings.CacheServerLauncher_CREATE_STATUS_EXCEPTION_0,
e.toString());
loggedWarning = true;
}
}
}
}
}
oldModified = lastModified;
if (status.state == SHUTDOWN_PENDING) {
stopAdditionalServices();
this.disconnect(cache);
status.state = SHUTDOWN;
writeStatus(status);
} else {
Thread.sleep(250);
}
} else {
Thread.sleep(1000);
}
if (!system.isConnected()) {
// System.out.println("System is disconnected. isReconnecting = " +
// system.isReconnecting());
boolean reconnected = false;
if (system.isReconnecting()) {
reconnected = system.waitUntilReconnected(-1, TimeUnit.SECONDS);
if (reconnected) {
system = (InternalDistributedSystem) system.getReconnectedSystem();
cache = GemFireCacheImpl.getInstance();
}
}
if (!reconnected) {
// shutdown-all disconnected the DS
System.exit(0);
}
}
}
}
private void installLogListener() {
MainLogReporter reporter = new MainLogReporter(this.status);
StartupStatus.setListener(reporter);
reporter.setDaemon(true);
reporter.start();
}
private void clearLogListener() {
MainLogReporter mainLogListener = (MainLogReporter) StartupStatus.getStartupListener();
if (mainLogListener != null) {
mainLogListener.shutdown();
StartupStatus.clearListener();
}
}
protected InternalDistributedSystem connect(Properties props) {
return (InternalDistributedSystem) DistributedSystem.connect(props);
}
protected static float getCriticalHeapPercent(Map options) {
if (options != null) {
String criticalHeapThreshold = (String) options.get(CRITICAL_HEAP_PERCENTAGE);
if (criticalHeapThreshold != null) {
return Float
.parseFloat(criticalHeapThreshold.substring(criticalHeapThreshold.indexOf("=") + 1));
}
}
return -1.0f;
}
protected static float getEvictionHeapPercent(Map options) {
if (options != null) {
String evictionHeapThreshold = (String) options.get(EVICTION_HEAP_PERCENTAGE);
if (evictionHeapThreshold != null) {
return Float
.parseFloat(evictionHeapThreshold.substring(evictionHeapThreshold.indexOf("=") + 1));
}
}
return -1.0f;
}
protected static float getCriticalOffHeapPercent(Map options) {
if (options != null) {
String criticalOffHeapThreshold = (String) options.get(CRITICAL_OFF_HEAP_PERCENTAGE);
if (criticalOffHeapThreshold != null) {
return Float.parseFloat(
criticalOffHeapThreshold.substring(criticalOffHeapThreshold.indexOf("=") + 1));
}
}
return -1.0f;
}
protected static float getEvictionOffHeapPercent(Map options) {
if (options != null) {
String evictionOffHeapThreshold = (String) options.get(EVICTION_OFF_HEAP_PERCENTAGE);
if (evictionOffHeapThreshold != null) {
return Float.parseFloat(
evictionOffHeapThreshold.substring(evictionOffHeapThreshold.indexOf("=") + 1));
}
}
return -1.0f;
}
protected Cache createCache(InternalDistributedSystem system, Map options)
throws IOException {
Cache cache = CacheFactory.create(system);
float threshold = getCriticalHeapPercent(options);
if (threshold > 0.0f) {
cache.getResourceManager().setCriticalHeapPercentage(threshold);
}
threshold = getEvictionHeapPercent(options);
if (threshold > 0.0f) {
cache.getResourceManager().setEvictionHeapPercentage(threshold);
}
threshold = getCriticalOffHeapPercent(options);
getCriticalOffHeapPercent(options);
if (threshold > 0.0f) {
cache.getResourceManager().setCriticalOffHeapPercentage(threshold);
}
threshold = getEvictionOffHeapPercent(options);
if (threshold > 0.0f) {
cache.getResourceManager().setEvictionOffHeapPercentage(threshold);
}
// Create and start a default cache server
// If (disableDefaultServer is not set or it is set but false) AND (the number of cacheservers
// is 0)
Boolean disable = disableDefaultServer.get();
if ((disable == null || !disable) && cache.getCacheServers().size() == 0) {
// Create and add a cache server
CacheServer server = cache.addCacheServer();
CacheServerHelper.setIsDefaultServer(server);
// Set its port if necessary
Integer serverPort = CacheServerLauncher.getServerPort();
if (serverPort != null) {
server.setPort(serverPort);
}
// Set its bind address if necessary
String serverBindAddress = getServerBindAddress();
if (serverBindAddress != null) {
server.setBindAddress(serverBindAddress.trim());
}
// Start it
server.start();
}
return cache;
}
protected void disconnect(Cache cache) {
DistributedSystem dsys = cache.getDistributedSystem();
cache.close();
dsys.disconnect();
}
/**
* Stops a cache server (which is running in a different VM) by setting its status to
* {@link #SHUTDOWN_PENDING}. Waits for the cache server to actually shut down.
*/
public void stop(final String[] args) throws Exception {
this.workingDir = (File) getStopOptions(args).get(DIR);
// determine the current state of the Cache Server process...
final File statusFile = new File(this.workingDir, this.statusName);
int exitStatus = 1;
if (statusFile.exists()) {
this.status = spinReadStatus();
// upon reading the status file, request the Cache Server to shutdown if it has not already...
if (this.status.state != SHUTDOWN) {
// copy server PID and not use own PID; see bug #39707
this.status = createStatus(this.baseName, SHUTDOWN_PENDING, this.status.pid);
writeStatus(this.status);
}
// poll the Cache Server for a response to our shutdown request (passes through if the Cache
// Server
// has already shutdown)...
pollCacheServerForShutdown();
// after polling, determine the status of the Cache Server one last time and determine how to
// exit...
if (this.status.state == SHUTDOWN) {
System.out.println(
LocalizedStrings.CacheServerLauncher_0_STOPPED.toLocalizedString(this.baseName));
deleteStatus();
exitStatus = 0;
} else {
System.out.println(
LocalizedStrings.CacheServerLauncher_TIMEOUT_WAITING_FOR_0_TO_SHUTDOWN_STATUS_IS_1
.toLocalizedString(this.baseName, this.status));
}
} else {
System.out.println(
LocalizedStrings.CacheServerLauncher_THE_SPECIFIED_WORKING_DIRECTORY_0_CONTAINS_NO_STATUS_FILE
.toLocalizedString(this.workingDir));
}
if (DONT_EXIT_AFTER_LAUNCH) {
return;
}
System.exit(exitStatus);
}
private void pollCacheServerForShutdown() throws InterruptedException {
final int increment = 250; // unit is in milliseconds
int clock = 0;
// wait for a total of 20000 milliseconds (or 20 seconds)
while (clock < SHUTDOWN_WAIT_TIME && status.state != SHUTDOWN) {
try {
status = readStatus();
} catch (IOException ignore) {
}
try {
Thread.sleep(increment);
} catch (InterruptedException ie) {
break;
}
clock += increment;
}
}
/**
* A class that represents the status of a cache server. Instances of this class are serialized to
* a {@linkplain #statusName file} on disk.
*
* @see #SHUTDOWN
* @see #STARTING
* @see #RUNNING
* @see #SHUTDOWN_PENDING
*/
static class Status implements Serializable {
private static final long serialVersionUID = 190943081363646485L;
public int state = 0;
public int pid = 0;
private final String baseName;
public Throwable exception;
public String msg;
public String dsMsg;
public Status(String baseName) {
this.baseName = baseName;
}
@Override
public String toString() {
final StringBuilder buffer = new StringBuilder();
buffer.append(this.baseName).append(" pid: ").append(pid).append(" status: ");
switch (state) {
case SHUTDOWN:
buffer.append("stopped");
break;
case STARTING:
buffer.append("starting");
break;
case RUNNING:
buffer.append("running");
break;
case SHUTDOWN_PENDING:
buffer.append("stopping");
break;
default:
buffer.append("unknown");
break;
}
if (exception != null) {
if (msg != null) {
buffer.append("\n").append(msg).append(" - ");
} else {
buffer.append("\nException in ").append(this.baseName).append(" - ");
}
buffer.append(
LocalizedStrings.CacheServerLauncher_SEE_LOG_FILE_FOR_DETAILS.toLocalizedString());
} else if (this.dsMsg != null) {
buffer.append('\n').append(this.dsMsg);
}
return buffer.toString();
}
}
/**
* Notes that an error has occurred in the cache server and that it has shut down because of it.
*/
protected void setServerError(final String msg, final Throwable t) {
try {
writeStatus(createStatus(this.baseName, SHUTDOWN, OSProcess.getId(), msg, t));
} catch (Exception e) {
if (logger != null) {
logger.severe(e);
} else {
e.printStackTrace();
}
System.exit(1);
}
}
/**
* Sets the status of a cache server by serializing a Status instance to a file in
* the server's working directory.
*/
public void writeStatus(final Status s) throws IOException {
FileOutputStream fileOutput = null;
ObjectOutputStream objectOutput = null;
try {
fileOutput = new FileOutputStream(new File(workingDir, statusName));
objectOutput = new ObjectOutputStream(fileOutput);
objectOutput.writeObject(s);
objectOutput.flush();
} finally {
IOUtils.close(objectOutput);
IOUtils.close(fileOutput);
}
}
/**
* Reads a cache server's status. If the status file cannot be read because of I/O problems, it
* will try again.
*/
protected Status spinReadStatus() {
final long timeout = (System.currentTimeMillis() + 60000);
Status status = null;
while (status == null && System.currentTimeMillis() < timeout) {
try {
status = readStatus();
} catch (Exception e) {
// try again - the status might have been read in the middle of it being written by the
// server resulting in
// an EOFException here
try {
Thread.sleep(500);
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
status = null;
break;
}
}
}
return status;
}
/**
* Reads a cache server's status from a file in its working directory.
*/
protected Status readStatus() throws InterruptedException, IOException {
final File statusFile = new File(workingDir, statusName);
FileInputStream fileInput = null;
ObjectInputStream objectInput = null;
try {
fileInput = new FileInputStream(statusFile);
objectInput = new ObjectInputStream(fileInput);
Status status = (Status) objectInput.readObject();
// See bug 32760
// Note, only execute the conditional createStatus statement if we are in native mode; if we
// are in pure Java mode
// the the process ID identified in the Status object is assumed to exist!
if (!isExistingProcess(status.pid)) {
status = createStatus(this.baseName, SHUTDOWN, status.pid);
}
return status;
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
} catch (FileNotFoundException e) {
Thread.sleep(500);
if (statusFile.exists()) {
return readStatus();
} else {
throw e;
}
} finally {
IOUtils.close(objectInput);
IOUtils.close(fileInput);
}
}
/**
* Removes a cache server's status file
*/
private void deleteStatus() throws IOException {
final File statusFile = new File(workingDir, statusName);
if (statusFile.exists() && !statusFile.delete()) {
throw new IOException("Could not delete status file (" + statusFile.getAbsolutePath() + ")!");
}
}
protected boolean isExistingProcess(final int pid) {
return (PureJavaMode.isPure() || (pid != 0 && OSProcess.exists(pid)));
}
protected void waitForRunning() throws Exception {
Status status = spinReadStatus();
String lastReadMessage = null;
String lastReportedMessage = null;
long lastReadTime = System.nanoTime();
if (status == null) {
throw new Exception(
LocalizedStrings.CacheServerLauncher_NO_AVAILABLE_STATUS.toLocalizedString());
} else {
switch (status.state) {
case STARTING:
// re-read status for a while...
while (status.state == STARTING) {
Thread.sleep(500); // fix for bug 36998
status = spinReadStatus();
// check to see if the status message has changed
if (status.dsMsg != null && !status.dsMsg.equals(lastReadMessage)) {
lastReadMessage = status.dsMsg;
lastReadTime = System.nanoTime();
}
// if the status message has not changed for 15 seconds, print
// out the message.
long elapsed = System.nanoTime() - lastReadTime;
if (TimeUnit.NANOSECONDS.toMillis(elapsed) > STATUS_WAIT_TIME && lastReadMessage != null
&& !lastReadMessage.equals(lastReportedMessage)) {
long elapsedSec = TimeUnit.NANOSECONDS.toSeconds(elapsed);
System.out.println(LocalizedStrings.CacheServerLauncher_LAUNCH_IN_PROGRESS_0
.toLocalizedString(elapsedSec, status.dsMsg));
lastReportedMessage = lastReadMessage;
}
}
if (status.state == SHUTDOWN) {
System.out.println(status);
System.exit(1);
}
break;
default:
break;
}
System.out.println(status);
}
}
/**
* Reads {@link DistributedSystem#PROPERTY_FILE} and determines if the
* {@link ConfigurationProperties#LOG_FILE} property is set to stdout
*
* @return true if the logging would go to stdout
*/
private static boolean isLoggingToStdOut() {
Properties gfprops = new Properties();
URL url = DistributedSystem.getPropertyFileURL();
if (url != null) {
try {
gfprops.load(url.openStream());
} catch (IOException io) {
// throw new GemFireIOException("Failed reading " + url, io);
System.out.println("Failed reading " + url);
System.exit(1);
}
final String logFile = gfprops.getProperty(LOG_FILE);
if (logFile == null || logFile.length() == 0) {
return true;
}
} else {
// Didnt find a property file, assuming the default is to log to stdout
return true;
}
return false;
}
/**
* Process information contained in the options map and add to the command line of the subprocess
* as needed.
*/
protected void addToServerCommand(final List commandLine,
final Map options) {
final ListWrapper commandLineWrapper = new ListWrapper(commandLine);
if (Boolean.TRUE.equals(options.get(REBALANCE))) {
commandLineWrapper.add("-rebalance");
}
commandLineWrapper.add((String) options.get(DISABLE_DEFAULT_SERVER));
commandLineWrapper.add((String) options.get(SERVER_PORT));
commandLineWrapper.add((String) options.get(SERVER_BIND_ADDRESS_NAME));
String criticalHeapThreshold = (String) options.get(CRITICAL_HEAP_PERCENTAGE);
if (criticalHeapThreshold != null) {
commandLineWrapper.add(criticalHeapThreshold);
}
String evictionHeapThreshold = (String) options.get(EVICTION_HEAP_PERCENTAGE);
if (evictionHeapThreshold != null) {
commandLineWrapper.add(evictionHeapThreshold);
}
String criticalOffHeapThreshold = (String) options.get(CRITICAL_OFF_HEAP_PERCENTAGE);
if (criticalOffHeapThreshold != null) {
commandLineWrapper.add(criticalOffHeapThreshold);
}
String evictionOffHeapThreshold = (String) options.get(EVICTION_OFF_HEAP_PERCENTAGE);
if (evictionOffHeapThreshold != null) {
commandLineWrapper.add(evictionOffHeapThreshold);
}
final Properties props = (Properties) options.get(PROPERTIES);
for (final Object key : props.keySet()) {
commandLineWrapper.add(key + "=" + props.getProperty(key.toString()));
}
if (props.getProperty(LOG_FILE) == null && CacheServerLauncher.isLoggingToStdOut()) {
// Do not allow the cache server to log to stdout; override the logger with
// #defaultLogFileName
commandLineWrapper.add(LOG_FILE + "=" + defaultLogFileName);
}
}
/**
* This method is called immediately following cache creation in the spawned process, but prior to
* setting the RUNNING flag in the status file. So the spawning process will block until this
* method completes.
*/
protected void startAdditionalServices(final Cache cache, final Map options)
throws Exception {}
/**
* This method is called prior to DistributedSytstem.disconnect(). Care should be taken not to
* take too long in this method or else #CacheServerLauncher.stop may timeout.
*/
protected void stopAdditionalServices() throws Exception {}
/**
* A List implementation that disallows null values.
*
* @param the Class type for the List elements.
*/
protected static class ListWrapper extends AbstractList {
private static final ThreadLocal addResult = new ThreadLocal();
private final List list;
public ListWrapper(final List list) {
assert list != null : "The List cannot be null!";
this.list = list;
}
@Override
public boolean add(final E e) {
final boolean localAddResult = super.add(e);
return (localAddResult && addResult.get());
}
@Override
public void add(final int index, final E element) {
if (element != null) {
list.add(index, element);
}
addResult.set(element != null);
}
@Override
public E get(final int index) {
return this.list.get(index);
}
@Override
public E remove(final int index) {
return list.remove(index);
}
@Override
public E set(final int index, final E element) {
return (element != null ? list.set(index, element) : list.get(index));
}
@Override
public int size() {
return list.size();
}
}
private class MainLogReporter extends Thread implements StartupStatusListener {
private String lastLogMessage;
private final Status status;
boolean running = true;
public MainLogReporter(Status status) {
this.status = status;
}
public synchronized void shutdown() {
this.running = false;
this.status.dsMsg = null;
this.notifyAll();
}
@Override
public void setStatus(String status) {
lastLogMessage = status;
}
public synchronized void run() {
while (running) {
try {
wait(1000);
} catch (InterruptedException e) {
// this should not happen.
break;
}
if (running && safeEquals(lastLogMessage, status.dsMsg)) {
status.dsMsg = lastLogMessage;
try {
writeStatus(status);
} catch (IOException e) {
// this could happen if there was a concurrent write to the file
// eg a stop.
continue;
}
}
}
}
}
protected static boolean safeEquals(String lastLogMessage, String dsMsg) {
if (lastLogMessage == null && dsMsg == null) {
return true;
} else if (lastLogMessage == null || dsMsg == null) {
return false;
}
return lastLogMessage.equals(dsMsg);
}
}