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package org.glassfish.cluster.ssh.connect;
import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.ArrayList;
import java.util.logging.Logger;
import org.glassfish.common.util.admin.AsadminInput;
import org.jvnet.hk2.component.Habitat;
import org.glassfish.api.admin.SSHCommandExecutionException;
import com.sun.enterprise.universal.process.ProcessManagerException;
import com.sun.enterprise.universal.process.ProcessManager;
import com.sun.enterprise.config.serverbeans.Node;
import com.sun.enterprise.util.SystemPropertyConstants;
import com.sun.enterprise.util.StringUtils;
import org.glassfish.cluster.ssh.launcher.SSHLauncher;
import java.io.ByteArrayOutputStream;
import org.glassfish.common.util.admin.AuthTokenManager;
public class NodeRunner {
private static final String NL = System.getProperty("line.separator");
private static final String AUTH_TOKEN_STDIN_LINE_PREFIX = "option." + AuthTokenManager.AUTH_TOKEN_OPTION_NAME + "=";
private Habitat habitat;
private Logger logger;
private String lastCommandRun = null;
private int commandStatus;
private SSHLauncher sshL = null;
private final AuthTokenManager authTokenManager;
public NodeRunner(Habitat habitat, Logger logger) {
this.logger = logger;
this.habitat = habitat;
authTokenManager = habitat.getComponent(AuthTokenManager.class);
}
public String getLastCommandRun() {
return lastCommandRun;
}
public boolean isSshNode(Node node) {
if (node == null) {
throw new IllegalArgumentException("Node is null");
}
if (node.getType() ==null)
return false;
return node.getType().equals("SSH");
}
/**
* Run an asadmin command on a Node. The node may be local or remote. If
* it is remote then SSH is used to execute the command on the node.
* The args list is all parameters passed to "asadmin", but not
* "asadmin" itself. So an example args is:
*
* "--host", "mydashost.com", "start-local-instance", "--node", "n1", "i1"
*
* @param node The node to run the asadmin command on
* @param output A StringBuilder to hold the command's output in. Both
* stdout and stderr are placed in output. null if you
* don't want the output.
* @param args The arguments to the asadmin command. This includes
* parameters for asadmin (like --host) as well as the
* command (like start-local-instance) as well as an
* parameters for the command. It does not include the
* string "asadmin" itself.
* @return The status of the asadmin command. Typically 0 if the
* command was successful else 1.
*
* @throws SSHCommandExecutionException There was an error executing the
* command via SSH.
* @throws ProcessManagerException There was an error executing the
* command locally.
* @throws UnsupportedOperationException The command needs to be run on
* a remote node, but the node is not
* of type SSH.
* @throws IllegalArgumentException The passed node is malformed.
*/
public int runAdminCommandOnNode(Node node, StringBuilder output,
List args) throws
SSHCommandExecutionException,
ProcessManagerException,
UnsupportedOperationException,
IllegalArgumentException {
return runAdminCommandOnNode(node, output, false, args);
}
public int runAdminCommandOnNode(Node node, StringBuilder output,
boolean waitForReaderThreads,
List args) throws
SSHCommandExecutionException,
ProcessManagerException,
UnsupportedOperationException,
IllegalArgumentException {
if (node == null) {
throw new IllegalArgumentException("Node is null");
}
final List stdinLines = new ArrayList();
stdinLines.add(AsadminInput.versionSpecifier());
stdinLines.add(AUTH_TOKEN_STDIN_LINE_PREFIX + authTokenManager.createToken());
args.add(0, AsadminInput.CLI_INPUT_OPTION);
args.add(1, AsadminInput.SYSTEM_IN_INDICATOR); // specified to read from System.in
args.add(2, "--interactive=false"); // No prompting!
if (node.isLocal()) {
return runAdminCommandOnLocalNode(node, output, waitForReaderThreads,
args, stdinLines);
} else {
return runAdminCommandOnRemoteNode(node, output, args, stdinLines);
}
}
private int runAdminCommandOnLocalNode(Node node, StringBuilder output,
boolean waitForReaderThreads,
List args,
List stdinLines) throws
ProcessManagerException {
List fullcommand = new ArrayList();
String installDir = node.getInstallDirUnixStyle() + "/glassfish";
if (!StringUtils.ok(installDir)) {
throw new IllegalArgumentException("Node does not have an installDir");
}
File asadmin = new File(SystemPropertyConstants.getAsAdminScriptLocation(installDir));
fullcommand.add(asadmin.getAbsolutePath());
fullcommand.addAll(args);
if (!asadmin.canExecute())
throw new ProcessManagerException(asadmin.getAbsolutePath() + " is not executable.");
lastCommandRun = commandListToString(fullcommand);
trace("Running command locally: " + lastCommandRun);
ProcessManager pm = new ProcessManager(fullcommand);
pm.setStdinLines(stdinLines);
// XXX should not need this after fix for 12777, but we seem to
pm.waitForReaderThreads(waitForReaderThreads);
pm.execute(); // blocks until command is complete
String stdout = pm.getStdout();
String stderr = pm.getStderr();
if (output != null) {
if (StringUtils.ok(stdout)) {
output.append(stdout);
}
if (StringUtils.ok(stderr)) {
if (output.length() > 0) {
output.append(NL);
}
output.append(stderr);
}
}
return pm.getExitValue();
}
private int runAdminCommandOnRemoteNode(Node node, StringBuilder output,
List args,
List stdinLines) throws
SSHCommandExecutionException, IllegalArgumentException,
UnsupportedOperationException {
if (! isSshNode(node)) {
throw new UnsupportedOperationException(
"Node is not of type SSH");
}
String installDir = node.getInstallDirUnixStyle() + "/glassfish";
if (!StringUtils.ok(installDir)) {
throw new IllegalArgumentException("Node does not have an installDir");
}
List fullcommand = new ArrayList();
// We can just use "asadmin" even on Windows since the SSHD provider
// will locate the command (.exe or .bat) for us
fullcommand.add(installDir + "/bin/asadmin");
fullcommand.addAll(args);
try{
lastCommandRun = commandListToString(fullcommand);
trace("Running command on " + node.getNodeHost() + ": " +
lastCommandRun);
sshL=habitat.getComponent(SSHLauncher.class);
sshL.init(node, logger);
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
commandStatus = sshL.runCommand(fullcommand, outStream, stdinLines);
String results = outStream.toString();
output.append(outStream.toString());
return commandStatus;
}catch (IOException ex) {
String m1 = " Command execution failed. " +ex.getMessage();
String m2 = "";
Throwable e2 = ex.getCause();
if(e2 != null) {
m2 = e2.getMessage();
}
logger.severe("Command execution failed for "+ lastCommandRun);
SSHCommandExecutionException cee = new SSHCommandExecutionException(StringUtils.cat(":",
m1));
cee.setSSHSettings(sshL.toString());
cee.setCommandRun(lastCommandRun);
throw cee;
} catch (java.lang.InterruptedException ei){
ei.printStackTrace();
String m1 = ei.getMessage();
String m2 = "";
Throwable e2 = ei.getCause();
if(e2 != null) {
m2 = e2.getMessage();
}
logger.severe("Command interrupted "+ lastCommandRun);
SSHCommandExecutionException cee = new SSHCommandExecutionException(StringUtils.cat(":",
m1, m2));
cee.setSSHSettings(sshL.toString());
cee.setCommandRun(lastCommandRun);
throw cee;
}
}
private void trace(String s) {
logger.fine(String.format("%s: %s", this.getClass().getSimpleName(), s));
}
private String commandListToString(List command) {
StringBuilder fullCommand = new StringBuilder();
for (String s : command) {
fullCommand.append(" ");
fullCommand.append(s);
}
return fullCommand.toString();
}
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