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com.marklogic.contentpump.ContentPump Maven / Gradle / Ivy
/*
* Copyright (c) 2020 MarkLogic Corporation
*
* Licensed 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 com.marklogic.contentpump;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.GnuParser;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.JobStatus;
import org.apache.hadoop.util.GenericOptionsParser;
import org.apache.hadoop.util.VersionInfo;
import com.marklogic.contentpump.utilities.AuditUtil;
import com.marklogic.contentpump.utilities.CommandlineOptions;
import com.marklogic.contentpump.utilities.OptionsFileUtil;
import com.marklogic.mapreduce.MarkLogicConstants;
/**
* ContentPump entry point. MarkLogic ContentPump is a tool that moves content
* between a MarkLogic database and file system or copies content from one
* MarkLogic database to another.
*
* @author jchen
*
*/
public class ContentPump implements MarkLogicConstants, ConfigConstants {
public static final Log LOG = LogFactory.getLog(ContentPump.class);
// A global flag to indicate that JVM is exiting
public static volatile boolean shutdown = false;
// Job state in local mode
static List jobs = new LinkedList();
static {
// register a shutdown hook
Runtime.getRuntime().addShutdownHook(new ShutdownHook());
}
public static void main(String[] args) throws Exception {
if (args.length == 0) {
printUsage();
System.exit(1);
}
String[] expandedArgs = null;
int rc = 1;
try {
expandedArgs = OptionsFileUtil.expandArguments(args);
rc = runCommand(expandedArgs);
} catch (Exception ex) {
LOG.error("Error while expanding arguments", ex);
System.err.println(ex.getMessage());
System.err.println("Try 'mlcp help' for usage.");
}
System.exit(rc);
}
public static int runCommand(String[] args) throws IOException {
// get command
String cmd = args[0];
if (cmd.equalsIgnoreCase("help")) {
printUsage();
return 1;
} else if (cmd.equalsIgnoreCase("version")) {
logVersions();
return 1;
}
Command command = Command.forName(cmd);
// get options arguments
String[] optionArgs = Arrays.copyOfRange(args, 1, args.length);
if (LOG.isDebugEnabled()) {
LOG.debug("Command: " + command);
StringBuilder buf = new StringBuilder();
// Password masking
boolean isPassword = false;
for (String arg : optionArgs) {
if (isPassword) {
arg = "...";
isPassword = false;
}
if (arg.matches(".*password")) {
isPassword = true;
}
buf.append(arg);
buf.append(' ');
}
LOG.debug("Arguments: " + buf);
}
// parse hadoop specific options
Configuration conf = new Configuration();
GenericOptionsParser genericParser = new GenericOptionsParser(
conf, optionArgs);
String[] remainingArgs = genericParser.getRemainingArgs();
// parse command specific options
CommandlineOptions options = new CommandlineOptions();
command.configOptions(options);
CommandLineParser parser = new GnuParser();
CommandLine cmdline;
try {
cmdline = parser.parse(options, remainingArgs);
} catch (Exception e) {
LOG.error("Error parsing command arguments: ");
LOG.error(e.getMessage());
// Print the command usage message and exit.
command.printUsage(command, options.getPublicOptions());
return 1; // Exit on exception here.
}
for (String arg : cmdline.getArgs()) {
LOG.error("Unrecognized argument: " + arg);
// Print the command usage message and exit.
command.printUsage(command, options.getPublicOptions());
return 1; // Exit on exception here.
}
// check running mode and hadoop conf dir configuration
String mode = cmdline.getOptionValue(MODE);
if (mode != null &&
!MODE_DISTRIBUTED.equalsIgnoreCase(mode) &&
!MODE_LOCAL.equalsIgnoreCase(mode)) {
LOG.error("Unrecognized option argument for " +
MODE + ": " + mode);
return 1;
}
String hadoopConfDir = System.getenv(HADOOP_CONFDIR_ENV_NAME);
if (cmdline.hasOption(HADOOP_CONF_DIR)) {
hadoopConfDir = cmdline.getOptionValue(HADOOP_CONF_DIR);
}
boolean distributed = hadoopConfDir != null && (mode == null ||
mode.equalsIgnoreCase(MODE_DISTRIBUTED));
if (MODE_DISTRIBUTED.equalsIgnoreCase(mode) && !distributed) {
LOG.error("Cannot run in distributed mode. HADOOP_CONF_DIR is "
+ "not configured.");
}
if (distributed) {
LOG.warn("Mlcp distributed mode has been deprecated and will be "
+ "disabled in the next release. For more info, please refer " +
"to: https://docs.marklogic.com/9.0/guide/mlcp/intro");
}
if (LOG.isDebugEnabled()) {
LOG.debug("Running in: " + (distributed ? "distributed " : "local")
+ "mode");
if (distributed) {
LOG.debug("HADOOP_CONF_DIR is set to " + hadoopConfDir);
}
}
conf.set(EXECUTION_MODE, distributed ? MODE_DISTRIBUTED : MODE_LOCAL);
if (conf.getBoolean(RESTRICT_INPUT_HOSTS, true) ||
conf.getBoolean(RESTRICT_OUTPUT_HOSTS, true)) {
System.setProperty("xcc.httpcompliant", "true");
}
if (distributed) {
if (!cmdline.hasOption(SPLIT_INPUT)
&& Command.getInputType(cmdline).equals(
InputType.DELIMITED_TEXT)) {
conf.setBoolean(ConfigConstants.CONF_SPLIT_INPUT, true);
}
File hdConfDir= new File(hadoopConfDir);
try {
checkHadoopConfDir(hdConfDir);
} catch (IllegalArgumentException e) {
LOG.error("Error found with Hadoop home setting", e);
System.err.println(e.getMessage());
return 1;
}
// set new class loader based on Hadoop Conf Dir
try {
setClassLoader(hdConfDir, conf);
} catch (Exception e) {
LOG.error("Error configuring class loader", e);
System.err.println(e.getMessage());
return 1;
}
} else { // running in local mode
String bundleVersion =
System.getProperty(CONTENTPUMP_BUNDLE_ARTIFACT);
if (bundleVersion != null &&
"mapr".equals(bundleVersion)) {
String cpHome =
System.getProperty(CONTENTPUMP_HOME_PROPERTY_NAME);
if (cpHome != null) {
System.setProperty("java.security.auth.login.config", cpHome + "mapr.conf");
}
}
// Tell Hadoop that we are running in local mode. This is useful
// when the user has Hadoop home or their Hadoop conf dir in their
// classpath but want to run in local mode.
conf.set(CONF_MAPREDUCE_JOBTRACKER_ADDRESS, "local");
}
// create job
Job job = null;
try {
if (distributed) {
// So far all jobs created by mlcp are map only,
// so set number of reduce tasks to 0.
conf.setInt("mapreduce.job.reduces", 0);
// No speculative runs since speculative tasks don't get to
// clean up sessions properly
conf.setBoolean("mapreduce.map.speculative",
false);
} else {
// set working directory
conf.set(CONF_MAPREDUCE_JOB_WORKING_DIR, System.getProperty("user.dir"));
}
job = command.createJob(conf, cmdline);
LOG.info("Job name: " + job.getJobName());
} catch (Exception e) {
// Print exception message.
e.printStackTrace();
return 1;
}
synchronized (ContentPump.class) {
jobs.add(job);
}
// run job
try {
if (distributed) {
// submit job
submitJob(job);
} else {
runJobLocally((LocalJob)job, cmdline, command);
}
return getReturnCode(job.getJobState());
} catch (Exception e) {
LOG.error("Error running a ContentPump job", e);
e.printStackTrace(System.err);
return 1;
}
}
/**
* Set class loader for current thread and for Confifguration based on
* Hadoop home.
*
* @param hdConfDir Hadoop home directory
* @param conf Hadoop configuration
* @throws MalformedURLException
*/
private static void setClassLoader(File hdConfDir, Configuration conf)
throws Exception {
ClassLoader parent = conf.getClassLoader();
URL url = hdConfDir.toURI().toURL();
URL[] urls = new URL[1];
urls[0] = url;
ClassLoader classLoader = new URLClassLoader(urls, parent);
Thread.currentThread().setContextClassLoader(classLoader);
conf.setClassLoader(classLoader);
}
private static void checkHadoopConfDir(File hdConfDir)
throws IllegalArgumentException {
if (!hdConfDir.exists()) {
throw new IllegalArgumentException("Hadoop conf dir " + hdConfDir
+ " is not found.");
} else if (!hdConfDir.isDirectory()) {
throw new IllegalArgumentException("Hadoop conf dir " + hdConfDir
+ " is not a directory.");
} else if (!hdConfDir.canRead()) {
throw new IllegalArgumentException("Hadoop conf dir " + hdConfDir
+ " cannot be read.");
}
}
private static void submitJob(Job job) throws Exception {
String cpHome =
System.getProperty(CONTENTPUMP_HOME_PROPERTY_NAME);
// find job jar
File cpHomeDir= new File(cpHome);
FilenameFilter jobJarFilter = new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
if (name.endsWith(".jar") &&
name.startsWith(CONTENTPUMP_JAR_PREFIX)) {
return true;
} else {
return false;
}
}
};
File[] cpJars = cpHomeDir.listFiles(jobJarFilter);
if (cpJars == null || cpJars.length == 0) {
throw new RuntimeException("Content Pump jar file " +
"is not found under " + cpHome);
}
if (cpJars.length > 1) {
throw new RuntimeException("More than one Content Pump jar file " +
"are found under " + cpHome);
}
// set job jar
Configuration conf = job.getConfiguration();
conf.set("mapreduce.job.jar", cpJars[0].toURI().toURL().toString());
// find lib jars
FilenameFilter filter = new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
if (name.endsWith(".jar") && !name.startsWith("hadoop")) {
return true;
} else {
return false;
}
}
};
// set lib jars
StringBuilder jars = new StringBuilder();
for (File jar : cpHomeDir.listFiles(filter)) {
if (jars.length() > 0) {
jars.append(',');
}
jars.append(jar.toURI().toURL().toString());
}
conf.set("tmpjars", jars.toString());
if (LOG.isTraceEnabled())
LOG.trace("LIBJARS:" + jars.toString());
job.waitForCompletion(true);
AuditUtil.auditMlcpFinish(conf, job.getJobName(), job.getCounters());
synchronized(ContentPump.class) {
jobs.remove(job);
ContentPump.class.notify();
}
}
private static void runJobLocally(LocalJob job, CommandLine cmdline,
Command cmd) throws Exception {
LocalJobRunner runner = new LocalJobRunner(job, cmdline, cmd);
runner.run();
AuditUtil.auditMlcpFinish(job.getConfiguration(),
job.getJobName(), runner.getReporter().counters);
synchronized(ContentPump.class) {
jobs.remove(job);
ContentPump.class.notify();
}
}
private static void printUsage() {
System.out.println("usage: mlcp COMMAND [ARGS]\n");
System.out.println("Available commands:");
System.out.println(" IMPORT import data to a MarkLogic database");
System.out.println(" EXPORT export data from a MarkLogic database");
System.out.println(" COPY copy data from one MarkLogic database to another");
System.out.println(" EXTRACT extract data from MarkLogic forests");
System.out.println(" HELP list available commands");
System.out.println(" VERSION print the version");
}
public static void logVersions() {
System.out.println("ContentPump version: " + Versions.getVersion());
System.out.println("Java version: " +
System.getProperty("java.version"));
System.out.println("Hadoop version: " + VersionInfo.getVersion());
System.out.println("Supported MarkLogic versions: " +
Versions.getMinServerVersion() + " - " +
Versions.getMaxServerVersion());
}
public static int getReturnCode(JobStatus.State state) {
switch (state) {
case RUNNING:
return -1;
case SUCCEEDED:
return 0;
case FAILED:
return 1;
case PREP:
return 2;
case KILLED:
return 3;
default:
return 4;
}
}
static class ShutdownHook extends Thread {
boolean needToWait() {
boolean needToWait = false;
for (Job job : jobs) {
if (job instanceof LocalJob) {
needToWait = true;
break;
}
}
return needToWait;
}
public void run() {
shutdown = true;
// set system property for hadoop connector classes
System.setProperty("mlcp.shutdown", "1");
try {
synchronized (ContentPump.class) {
boolean needToWait = false;
List jobList = new LinkedList();
for (Job job : jobs) {
if (job instanceof LocalJob) {
LOG.info("Aborting job " + job.getJobName());
needToWait = true;
jobList.add(job);
}
}
if (needToWait) { // wait up to 30 seconds
for (int i = 0; i < 30; ++i) {
if (i > 0) { // check again
needToWait = needToWait();
}
if (needToWait) {
if (i > 0) {
LOG.info("Waiting..." + (30-i));
}
try {
ContentPump.class.wait(1000);
} catch (InterruptedException e) {
// go back to wait
}
}
}
}
for (Job job : jobs) {
LOG.warn("Job " + job.getJobName() +
" status remains " + job.getJobState());
jobList.remove(job);
}
for (Job job : jobList) {
LOG.warn("Job " + job.getJobName() + " is aborted");
}
}
} catch (Exception e) {
LOG.error("Error terminating job", e);
}
}
}
}
