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package com.sun.enterprise.admin.servermgmt.cli;
import com.sun.enterprise.admin.cli.CLIConstants;
import com.sun.enterprise.admin.cli.Environment;
import com.sun.enterprise.admin.cli.ProgramOptions;
import com.sun.enterprise.util.OS;
import java.io.File;
import java.io.IOException;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.sun.enterprise.admin.launcher.GFLauncher;
import com.sun.enterprise.admin.launcher.GFLauncherException;
import com.sun.enterprise.admin.launcher.GFLauncherInfo;
import com.sun.enterprise.universal.i18n.LocalStringsImpl;
import com.sun.enterprise.universal.process.ProcessStreamDrainer;
import com.sun.enterprise.universal.process.ProcessUtils;
import com.sun.enterprise.util.HostAndPort;
import com.sun.enterprise.util.io.ServerDirs;
import com.sun.enterprise.util.net.NetUtils;
import org.glassfish.api.admin.CommandException;
import static com.sun.enterprise.util.StringUtils.ok;
import static com.sun.enterprise.admin.cli.CLIConstants.WAIT_FOR_DAS_TIME_MS;
import com.sun.enterprise.admin.cli.CLIUtil;
/**
* Java does not allow multiple inheritance. Both StartDomainCommand and
* StartInstanceCommand have common code but they are already in a different
* hierarchy of classes. The first common baseclass is too far away -- e.g.
* no "launcher" variable, etc.
*
* Instead -- put common code in here and call it as common utilities
* This class is designed to be thread-safe and IMMUTABLE
* @author bnevins
*/
public class StartServerHelper {
public StartServerHelper(Logger logger0, boolean terse0,
ServerDirs serverDirs0, GFLauncher launcher0,
String masterPassword0, boolean debug0) {
logger = logger0;
terse = terse0;
launcher = launcher0;
info = launcher.getInfo();
if (info.isDomain())
serverOrDomainName = info.getDomainName();
else
serverOrDomainName = info.getInstanceName();
addresses = info.getAdminAddresses();
serverDirs = serverDirs0;
pidFile = serverDirs.getPidFile();
masterPassword = masterPassword0;
debug = debug0;
// it will be < 0 if both --debug is false and debug-enabled=false in jvm-config
debugPort = launcher.getDebugPort();
isDebugSuspend = launcher.isDebugSuspend();
if (isDebugSuspend && debugPort >= 0) {
logger.info(strings.get("ServerStart.DebuggerSuspendedMessage", "" + debugPort));
}
}
// TODO check the i18n messages
public void waitForServer() throws CommandException {
long startWait = System.currentTimeMillis();
if (!terse) {
// use stdout because logger always appends a newline
System.out.print(strings.get("WaitServer", serverOrDomainName) + " ");
}
boolean alive = false;
int count = 0;
pinged:
while (!timedOut(startWait)) {
if (pidFile != null) {
logger.finer("Check for pid file: " + pidFile);
if (pidFile.exists()) {
alive = true;
break pinged;
}
}
else {
// first, see if the admin port is responding
// if it is, the DAS is up
for (HostAndPort addr : addresses) {
if (NetUtils.isRunning(addr.getHost(), addr.getPort())) {
alive = true;
break pinged;
}
}
}
// check to make sure the DAS process is still running
// if it isn't, startup failed
try {
Process p = launcher.getProcess();
int exitCode = p.exitValue();
// uh oh, DAS died
String sname;
if (info.isDomain())
sname = "domain " + info.getDomainName();
else
sname = "instance " + info.getInstanceName();
ProcessStreamDrainer psd = launcher.getProcessStreamDrainer();
String output = psd.getOutErrString();
if (ok(output))
throw new CommandException(strings.get("serverDiedOutput",
sname, exitCode, output));
else
throw new CommandException(strings.get("serverDied",
sname, exitCode));
}
catch (GFLauncherException ex) {
// should never happen
}
catch (IllegalThreadStateException ex) {
// process is still alive
}
// wait before checking again
try {
Thread.sleep(100);
if (!terse && count++ % 10 == 0)
System.out.print(".");
}
catch (InterruptedException ex) {
// don't care
}
}
if (!terse)
System.out.println();
if (!alive) {
String msg;
String time = "" + (WAIT_FOR_DAS_TIME_MS / 1000);
if (info.isDomain())
msg = strings.get("serverNoStart", strings.get("DAS"),
info.getDomainName(), time);
else
msg = strings.get("serverNoStart", strings.get("INSTANCE"),
info.getInstanceName(), time);
throw new CommandException(msg);
}
}
/**
* Run a series of commands to prepare for a launch.
* @return false if there was a problem.
*/
public boolean prepareForLaunch() throws CommandException {
waitForParentToDie();
setSecurity();
if (checkPorts() == false)
return false;
deletePidFile();
return true;
}
public void report() {
String logfile;
try {
logfile = launcher.getLogFilename();
}
catch (GFLauncherException ex) {
logfile = "UNKNOWN"; // should never happen
}
int adminPort = -1;
String adminPortString = "-1";
try {
if (addresses != null && addresses.size() > 0)
adminPort = addresses.get(0).getPort();
// To avoid having the logger do this: port = 4,848
// so we do the conversion to a string ourselves
adminPortString = "" + adminPort;
}
catch (Exception e) {
//ignore
}
logger.info(strings.get(
"ServerStart.SuccessMessage",
info.isDomain() ? "domain " : "instance",
serverDirs.getServerName(),
serverDirs.getServerDir(),
logfile,
adminPortString));
if (debugPort >= 0) {
logger.info(strings.get("ServerStart.DebuggerMessage", "" + debugPort));
}
}
/**
* If the parent is a GF server -- then wait for it to die. This is part
* of the Client-Server Restart Dance!
* THe dying server called us with the system property AS_RESTART set to its pid
* @throws CommandException if we timeout waiting for the parent to die or
* if the admin ports never free up
*/
private void waitForParentToDie() throws CommandException {
// we also come here with just a regular start in which case there is
// no parent, and the System Property is NOT set to anything...
String pids = System.getProperty("AS_RESTART");
if (!ok(pids))
return;
int pid = -1;
try {
pid = Integer.parseInt(pids);
}
catch (Exception e) {
pid = -1;
}
waitForParentDeath(pid);
}
private boolean checkPorts() {
String err = adminPortInUse();
if (err != null) {
logger.warning(err);
return false;
}
return true;
}
private void deletePidFile() {
String msg = serverDirs.deletePidFile();
if (msg != null)
logger.finer(msg);
}
private void setSecurity() {
info.addSecurityToken(CLIConstants.MASTER_PASSWORD, masterPassword);
}
private String adminPortInUse() {
return adminPortInUse(info.getAdminAddresses());
}
private String adminPortInUse(List<HostAndPort> adminAddresses) {
// it returns a String for logging --- if desired
for (HostAndPort addr : adminAddresses) {
if (!NetUtils.isPortFree(addr.getHost(), addr.getPort()))
return strings.get("ServerRunning",
Integer.toString(addr.getPort()));
}
return null;
}
// use the pid we received from the parent server and platform specific tools
// to see FOR SURE when the entire JVM process is gone. This solves
// potential niggling bugs.
private void waitForParentDeath(int pid) throws CommandException {
if (pid < 0) {
// can not happen. (Famous Last Words!)
new ParentDeathWaiterPureJava();
return;
}
long start = System.currentTimeMillis();
try {
do {
Boolean b = ProcessUtils.isProcessRunning(pid);
if (b == null) {
// this means we were unable to find out from the OS if the process
// is running or not
debugMessage("ProcessUtils.isProcessRunning(" + pid + ") "
+ "returned null which means we can't get process "
+ "info on this platform.");
new ParentDeathWaiterPureJava();
return;
}
if (b.booleanValue() == false) {
debugMessage("Parent process (" + pid + ") is dead.");
return;
}
// else parent is still breathing...
debugMessage("Wait one more second for parent to die...");
Thread.sleep(1000);
}while (!timedOut(start, CLIConstants.DEATH_TIMEOUT_MS));
}
catch (Exception e) {
// fall through. Normal returns are in the block above
}
// abnormal return path
throw new CommandException(
strings.get("deathwait_timeout", CLIConstants.DEATH_TIMEOUT_MS));
}
private static boolean timedOut(long startTime) {
return timedOut(startTime, WAIT_FOR_DAS_TIME_MS);
}
private static boolean timedOut(long startTime, long span) {
return (System.currentTimeMillis() - startTime) > span;
}
private static void debugMessage(String s) {
// very difficult to see output from this process when part of restart-domain.
// Normally there is no console.
// There are **three** JVMs in a restart -- old server, new server, cli
// we will not even see AS_DEBUG!
if (DEBUG_MESSAGES_ON) {
Environment env = new Environment();
CLIUtil.writeCommandToDebugLog("restart-debug", env, new String[]{"DEBUG MESSAGE FROM RESTART JVM", s}, 99999);
}
}
private final boolean terse;
private final GFLauncher launcher;
private final Logger logger;
private final File pidFile;
private final GFLauncherInfo info;
private final List<HostAndPort> addresses;
private final ServerDirs serverDirs;
private final String masterPassword;
private final String serverOrDomainName;
private final boolean debug;
private final int debugPort;
private final boolean isDebugSuspend;
// only set when actively trouble-shooting or investigating...
private final static boolean DEBUG_MESSAGES_ON = false;
private static final LocalStringsImpl strings =
new LocalStringsImpl(StartServerHelper.class);
/**
* bnevins
* the restart flag is set by the RestartDomain command in the local
* server. The dying server has started a new JVM process and is
* running this code. Our official parent process is the dying server.
* The ParentDeathWaiterPureJava waits for the parent process to disappear.
* see RestartDomainCommand in core/kernel for more details
*/
private class ParentDeathWaiterPureJava implements Runnable {
@Override
@SuppressWarnings("empty-statement")
public void run() {
try {
// When parent process is almost dead, in.read returns -1 (EOF)
// as the pipe breaks.
while (System.in.read() >= 0);
}
catch (IOException ex) {
// ignore
}
// The port may take some time to become free after the pipe breaks
while (adminPortInUse(addresses) != null)
;
success = true;
}
private ParentDeathWaiterPureJava() throws CommandException {
try {
Thread t = new Thread(this);
t.start();
t.join(CLIConstants.DEATH_TIMEOUT_MS);
}
catch (Exception e) {
// ignore!
}
if (!success)
throw new CommandException(
strings.get("deathwait_timeout", CLIConstants.DEATH_TIMEOUT_MS));
}
boolean success = false;
}
}