Package org.glassfish.cluster.ssh.connect

Source Code of org.glassfish.cluster.ssh.connect.NodeRunnerDcom

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package org.glassfish.cluster.ssh.connect;

import com.sun.enterprise.util.cluster.windows.process.WindowsRemoteAsadmin;
import com.sun.enterprise.util.cluster.windows.io.WindowsRemoteFile;
import java.io.*;
import java.net.*;
import java.util.*;
import java.util.logging.*;

import com.sun.enterprise.config.serverbeans.SshAuth;
import com.sun.enterprise.config.serverbeans.SshConnector;
import com.sun.enterprise.util.cluster.windows.process.WindowsCredentials;
import com.sun.enterprise.util.cluster.windows.process.WindowsException;
import com.sun.enterprise.util.cluster.windows.process.WindowsRemoteScripter;
import org.glassfish.api.admin.SSHCommandExecutionException;
import com.sun.enterprise.config.serverbeans.Node;
import com.sun.enterprise.util.StringUtils;
import com.sun.enterprise.util.SystemPropertyConstants;
import com.sun.enterprise.util.cluster.windows.io.WindowsRemoteFileSystem;
import org.glassfish.cluster.ssh.util.DcomInfo;
import org.glassfish.cluster.ssh.util.DcomUtils;
import org.glassfish.common.util.admin.AsadminInput;
import static com.sun.enterprise.util.StringUtils.ok;

public class NodeRunnerDcom {
    private final Logger logger;
    private Node node;
    private WindowsRemoteFile authTokenFile;
    private String authTokenFilePath;
    private DcomInfo dcomInfo;

    public NodeRunnerDcom(Logger logger) {
        this.logger = logger;
    }

    /*
     * return 0 is success, otherwise failure
     */
    public final int runAdminCommandOnRemoteNode(Node thisNode, StringBuilder output,
            List<String> args,
            List<String> stdinLines) throws
            SSHCommandExecutionException, IllegalArgumentException,
            UnsupportedOperationException {

        String humanreadable = null;
        try {
            this.node = thisNode;
            dcomInfo = new DcomInfo(node);
            List<String> fullcommand = new ArrayList<String>();
            WindowsRemoteAsadmin asadmin = dcomInfo.getAsadmin();

            if (stdinLines != null && !stdinLines.isEmpty())
                setupAuthTokenFile(fullcommand, stdinLines);

            fullcommand.addAll(args);
            humanreadable = dcomInfo.getNadminPath() + " " + commandListToString(fullcommand);


            // This is where the rubber meets the road...
            String out = asadmin.run(fullcommand);
            output.append(out);
            logger.info(Strings.get("remote.command.summary", humanreadable, out));
            return 0;
        }
        catch (WindowsException ex) {
            throw new SSHCommandExecutionException(Strings.get(
                    "remote.command.error", ex.getMessage(), humanreadable), ex);
        }
        finally {
            teardownAuthTokenFile();
        }
    }

    private void trace(String s) {
        logger.fine(String.format("%s: %s", this.getClass().getSimpleName(), s));
    }

    private static String commandListToString(List<String> command) {
        StringBuilder fullCommand = new StringBuilder();

        for (String s : command) {
            fullCommand.append(" ");
            fullCommand.append(s);
        }

        return fullCommand.toString();
    }

    /*
     * BE CAREFUL -- Don't introduce "Distributed Concurrency Bugs"
     * e.g. you have to make sure the filename is unique.
     * 1. create a remote file
     * 2. copy the token/auth stuff into it
     * 3. add the correct args to the remote commandline
     *    Put the file in the same directory that asadmin lives in (bin)
     */
    private void setupAuthTokenFile(List<String> cmd, List<String> stdin) throws WindowsException {
        WindowsRemoteFileSystem wrfs = new WindowsRemoteFileSystem(dcomInfo.getCredentials());
        authTokenFilePath = dcomInfo.getAsadminParentPath() + "\\token_" + System.nanoTime() + new Random().nextInt(1000);
        authTokenFilePath = createUniqueFilename(dcomInfo.getAsadminParentPath());
        authTokenFile = new WindowsRemoteFile(wrfs, authTokenFilePath);
        authTokenFile.copyFrom(stdin);

        cmd.add(AsadminInput.CLI_INPUT_OPTION);
        cmd.add(authTokenFilePath);
    }

    private void teardownAuthTokenFile() {
        if (authTokenFile != null)
            try {
                authTokenFile.delete();
            }
            catch (WindowsException ex) {
                logger.warning(Strings.get("cant.delete", dcomInfo.getHost(), authTokenFilePath));
            }
    }

    private String createUniqueFilename(String path) {
        String random = "" + System.nanoTime();

        // just use the last 16 numbers
        if(random.length() > 16)
            random = random.substring(random.length() - 16);

        random += "" + new Random(System.currentTimeMillis()).nextInt(10000);

        return path + "\\DELETE_ME_" + random;
    }
}
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