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/*
* The contents of this file are subject to the license and copyright
* detailed in the LICENSE and NOTICE files at the root of the source
* tree and available online at
*
* http://duracloud.org/license/
*/
package org.duracloud.sync.config;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.cli.PosixParser;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang3.StringUtils;
import org.duracloud.common.util.CommandLineToolUtil;
import org.duracloud.common.util.ConsolePrompt;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* Handles reading the configuration parameters for the Sync Tool
*
* @author: Bill Branan
* Date: Mar 15, 2010
*/
public class SyncToolConfigParser {
protected static final long GIGABYTE = 1000*1000*1000;
protected static final String BACKUP_FILE_NAME = "synctool.config";
protected static final String PREV_BACKUP_FILE_NAME = "synctool.config.bak";
protected static final int DEFAULT_PORT = 443;
protected static final long DEFAULT_POLL_FREQUENCY = 10000;
protected static final int DEFAULT_NUM_THREADS = 3;
protected static final int DEFAULT_MAX_FILE_SIZE = 1; // 1 GB
protected static final String context = "durastore";
private Options cmdOptions;
private Options configFileOptions;
private CommandLineToolUtil cmdLineUtil;
/**
* Creates a parser for command line configuration options.
*/
public SyncToolConfigParser() {
cmdLineUtil = new CommandLineToolUtil();
// Command Line Options
cmdOptions = new Options();
Option hostOption =
new Option("h", "host", true,
"the host address of the DuraCloud " +
"DuraStore application");
hostOption.setRequired(true);
cmdOptions.addOption(hostOption);
Option portOption =
new Option("r", "port", true,
"the port of the DuraCloud DuraStore application " +
"(optional, default value is " + DEFAULT_PORT + ")");
portOption.setRequired(false);
cmdOptions.addOption(portOption);
Option usernameOption =
new Option("u", "username", true,
"the username necessary to perform writes to DuraStore");
usernameOption.setRequired(true);
cmdOptions.addOption(usernameOption);
Option passwordOption =
new Option("p",
"password",
true,
"the password necessary to perform writes to DuraStore; NOTICE: "
+ "if no password is specified in the command line the sync tool will "
+ "look for an environment variable named "
+ CommandLineToolUtil.PASSWORD_ENV_VARIABLE_NAME
+ " containing the password. Finally, if this environment variable "
+ "does not exist the user will be prompted for the password.");
passwordOption.setRequired(false);
cmdOptions.addOption(passwordOption);
Option storeIdOption =
new Option("i", "store-id", true,
"the Store ID for the DuraCloud storage provider");
storeIdOption.setRequired(false);
cmdOptions.addOption(storeIdOption);
Option spaceId =
new Option("s", "space-id", true,
"the ID of the DuraCloud space where content " +
"will be stored");
spaceId.setRequired(true);
cmdOptions.addOption(spaceId);
Option workDirOption =
new Option("w", "work-dir", true,
"the state of the sync tool is persisted to " +
"this directory (optional, default value is " +
"duracloud-sync-work directory in user home)");
workDirOption.setRequired(false);
cmdOptions.addOption(workDirOption);
Option contentDirs =
new Option("c", "content-dirs", true,
"the directory paths to monitor and sync with DuraCloud");
contentDirs.setRequired(true);
contentDirs.setArgs(Option.UNLIMITED_VALUES);
cmdOptions.addOption(contentDirs);
Option pollFrequency =
new Option("f", "poll-frequency", true,
"the time (in ms) to wait between each poll of the " +
"sync-dirs (optional, default value is " +
DEFAULT_POLL_FREQUENCY + ")");
pollFrequency.setRequired(false);
cmdOptions.addOption(pollFrequency);
Option numThreads =
new Option("t", "threads", true,
"the number of threads in the pool used to manage " +
"file transfers (optional, default value is " +
DEFAULT_NUM_THREADS + ")");
numThreads.setRequired(false);
cmdOptions.addOption(numThreads);
Option maxFileSize =
new Option("m", "max-file-size", true,
"the maximum size of a stored file in GB (value must " +
"be between 1 and 5), larger files will be split into " +
"pieces (optional, default value is " +
DEFAULT_MAX_FILE_SIZE + ")");
maxFileSize.setRequired(false);
cmdOptions.addOption(maxFileSize);
Option renameUpdates =
new Option("n", "rename-updates", true,
"indicates that updates should be synced to the cloud and renamed. " +
"Specify an optional suffix to override default " +
"( \"" + SyncToolConfig.DEFAULT_UPDATE_SUFFIX + "\"); " +
"To prevent updates altogether, see option -o. " +
"(optional, not set by default)");
renameUpdates.setRequired(false);
renameUpdates.setArgName("suffix");
renameUpdates.setOptionalArg(true);
cmdOptions.addOption(renameUpdates);
Option syncUpdates =
new Option("o", "no-update", false,
"indicates that changed files should not be updated; " +
"to perform updates without overwriting, see option -n. " +
"(optional, not set by default)");
syncUpdates.setRequired(false);
cmdOptions.addOption(syncUpdates);
Option syncDeletes =
new Option("d", "sync-deletes", false,
"indicates that deletes performed on files within the " +
"sync directories should also be performed on those " +
"files in DuraCloud; if this option is not included " +
"all deletes are ignored (optional, not set by default)");
syncDeletes.setRequired(false);
cmdOptions.addOption(syncDeletes);
Option cleanStart =
new Option("l", "clean-start", false,
"indicates that the sync tool should perform a clean " +
"start, ensuring that all files in all content " +
"directories are checked against DuraCloud, even if " +
"those files have not changed locally since the last " +
"run of the sync tool. (optional, not set by default)");
cleanStart.setRequired(false);
cmdOptions.addOption(cleanStart);
Option jumpStart =
new Option("j", "jump-start", false,
"indicates that the sync tool should not attempt to " +
"check if content to be synchronized is already in " +
"DuraCloud, but should instead transfer all content. " +
"This option is best used for new data sets. " +
"(optional, not set by default)");
jumpStart.setRequired(false);
cmdOptions.addOption(jumpStart);
Option exitOnCompletion =
new Option("x", "exit-on-completion", false,
"indicates that the sync tool should exit once it has " +
"completed a scan of the content directories and synced " +
"all files; if this option is included, the sync tool " +
"will not continue to monitor the sync dirs " +
"(optional, not set by default)");
exitOnCompletion.setRequired(false);
cmdOptions.addOption(exitOnCompletion);
Option excludeOption =
new Option("e", "exclude", true,
"file which provides a list of files and/or " +
"directories to exclude from the sync (one file or " +
"directory name rule per line)");
excludeOption.setRequired(false);
cmdOptions.addOption(excludeOption);
Option prefixOption =
new Option("a", "prefix", true,
"a prefix that is added to the beginning of the ID of " +
"each content item that is stored in DuraCloud. For " +
"example, a prefix value of 'a/b/c/' with a content " +
"item whose path is 'dir1/file.txt' would result in " +
"the file stored in DuraCloud as 'a/b/c/dir1/file.txt " +
"(optional)");
prefixOption.setRequired(false);
cmdOptions.addOption(prefixOption);
// Options to use Backup Config
configFileOptions = new Options();
Option configFileOption =
new Option("g", "config-file", true,
"read configuration from this file (a file containing " +
"the most recently used configuration can be found in " +
"the work-dir, named " + BACKUP_FILE_NAME + ")");
configFileOption.setRequired(true);
configFileOptions.addOption(configFileOption);
}
/**
* Parses command line configuration into an object structure, validates
* correct values along the way.
*
* Prints a help message and exits the JVM on parse failure.
*
* @param args command line configuration values
* @return populated SyncToolConfig
*/
public SyncToolConfig processCommandLine(String[] args) {
SyncToolConfig config = null;
try {
config = processConfigFileOptions(args);
} catch (ParseException e) {
printHelp(e.getMessage());
}
return config;
}
protected SyncToolConfig processConfigFileOptions(String[] args)
throws ParseException {
try {
CommandLineParser parser = new PosixParser();
CommandLine cmd = parser.parse(configFileOptions, args);
String configFilePath = cmd.getOptionValue("g");
File configFile = new File(configFilePath);
if(!configFile.exists()) {
throw new ParseException("No configuration file exists at " +
"the indicated path: " +
configFilePath);
}
String[] configFileArgs = retrieveConfig(configFile);
return processAndBackup(configFileArgs);
} catch(ParseException e) {
return processAndBackup(args);
}
}
private SyncToolConfig processAndBackup(String[] args)
throws ParseException {
SyncToolConfig config = processStandardOptions(args);
// Make sure work dir is set
SyncConfig.setWorkDir(config.getWorkDir());
config.setWorkDir(SyncConfig.getWorkDir());
backupConfig(config.getWorkDir(), args);
return config;
}
protected SyncToolConfig processStandardOptions(String[] args)
throws ParseException {
return processStandardOptions(args, true);
}
protected SyncToolConfig processStandardOptions(String[] args,
boolean requirePassword)
throws ParseException {
CommandLineParser parser = new PosixParser();
CommandLine cmd = parser.parse(cmdOptions, args);
SyncToolConfig config = new SyncToolConfig();
config.setContext(context);
config.setHost(cmd.getOptionValue("h"));
config.setUsername(cmd.getOptionValue("u"));
if (null != cmd.getOptionValue("p")) {
config.setPassword(cmd.getOptionValue("p"));
} else if (null != getPasswordEnvVariable()) {
config.setPassword(getPasswordEnvVariable());
} else if (requirePassword) {
ConsolePrompt console = getConsole();
if (null == console) {
printHelp("You must either specify a password in the command "+
"line or specify the " +
CommandLineToolUtil.PASSWORD_ENV_VARIABLE_NAME +
" environmental variable.");
} else {
char[] password = console.readPassword("DuraCloud password: ");
config.setPassword(new String(password));
}
}
config.setSpaceId(cmd.getOptionValue("s"));
if(cmd.hasOption("i")) {
config.setStoreId(cmd.getOptionValue("i"));
}
if(cmd.hasOption("r")) {
try {
config.setPort(Integer.valueOf(cmd.getOptionValue("r")));
} catch(NumberFormatException e) {
throw new ParseException("The value for port (-r) must be " +
"a number.");
}
} else {
config.setPort(DEFAULT_PORT);
}
if(cmd.hasOption("w")) {
File workDir = new File(cmd.getOptionValue("w"));
if(workDir.exists()) {
if(!workDir.isDirectory()) {
throw new ParseException("Work Dir parameter must provide " +
"the path to a directory. " +
"(optional, set to duracloud-" +
"sync-work directory in user's " +
"home directory by default)");
}
} else {
workDir.mkdirs();
}
workDir.setWritable(true);
config.setWorkDir(workDir);
} else {
config.setWorkDir(null);
}
String[] contentDirPaths = cmd.getOptionValues("c");
List contentDirs = new ArrayList();
for(String path : contentDirPaths) {
File contentDir = new File(path);
if(!contentDir.exists() || !contentDir.isDirectory()) {
throw new ParseException("Each content dir value must provide " +
"the path to a directory.");
}
contentDirs.add(contentDir);
}
config.setContentDirs(contentDirs);
if(cmd.hasOption("f")) {
try {
config.setPollFrequency(Long.valueOf(cmd.getOptionValue("f")));
} catch(NumberFormatException e) {
throw new ParseException("The value for poll frequency (-f) " +
"must be a number.");
}
} else {
config.setPollFrequency(DEFAULT_POLL_FREQUENCY);
}
if(cmd.hasOption("t")) {
try {
config.setNumThreads(Integer.valueOf(cmd.getOptionValue("t")));
} catch(NumberFormatException e) {
throw new ParseException("The value for threads (-t) must " +
"be a number.");
}
} else {
config.setNumThreads(DEFAULT_NUM_THREADS);
}
if(cmd.hasOption("m")) {
String error = "The value for max-file-size (-m) must be a " +
"number between 1 and 5.";
try {
long maxFileSize = Integer.valueOf(cmd.getOptionValue("m"));
if(maxFileSize >= 1 && maxFileSize <= 5) {
config.setMaxFileSize(maxFileSize * GIGABYTE);
} else {
throw new ParseException(error);
}
} catch(NumberFormatException e) {
throw new ParseException(error);
}
} else {
config.setMaxFileSize(DEFAULT_MAX_FILE_SIZE * GIGABYTE);
}
if(cmd.hasOption("o") && cmd.hasOption("n")){
throw new ParseException("Options -o (no updates) and -n " +
"(rename updates) cannot be used together.");
}
if(cmd.hasOption("o")){
config.setSyncUpdates(false);
}
if(cmd.hasOption("n") && cmd.hasOption("d")){
throw new ParseException("Options -n (rename updates) and -d " +
"(sync deletes) cannot be used together.");
}
if(cmd.hasOption("n")){
config.setRenameUpdates(true);
String suffix = cmd.getOptionValue("n");
if(StringUtils.isNotBlank(suffix)){
config.setUpdateSuffix(suffix);
}
}
if(cmd.hasOption("d")) {
config.setSyncDeletes(true);
} else {
config.setSyncDeletes(false);
}
if(cmd.hasOption("l")) {
config.setCleanStart(true);
} else {
config.setCleanStart(false);
}
if(cmd.hasOption("j")) {
config.setJumpStart(true);
if(cmd.hasOption("n") || cmd.hasOption("o")){
throw new ParseException(
"The Jump Start option (-j) requires that updates be " +
"handled as overwrites, thus options -n (rename updates) " +
"and -o (no-updates) cannot be used at the same time.");
}
} else {
config.setJumpStart(false);
}
if(cmd.hasOption("x")) {
config.setExitOnCompletion(true);
} else {
config.setExitOnCompletion(false);
}
if(cmd.hasOption("e")) {
File excludeFile = new File(cmd.getOptionValue("e"));
if(!excludeFile.exists()) {
throw new ParseException("Exclude parameter must provide the " +
"path to a valid file.");
}
config.setExcludeList(excludeFile);
}
if(cmd.hasOption("a")) {
config.setPrefix(cmd.getOptionValue("a"));
}
return config;
}
private void printHelp(String message) {
System.out.println("\n-----------------------\n" +
message +
"\n-----------------------\n");
HelpFormatter formatter = new HelpFormatter();
formatter.printHelp("Running SyncTool",
cmdOptions);
formatter.printHelp("ReRunning SyncTool",
configFileOptions);
System.exit(1);
}
protected void backupConfig(File backupDir, String[] args) {
File configBackupFile = new File(backupDir, BACKUP_FILE_NAME);
try {
if(configBackupFile.exists()) {
File prevConfigBackupFile =
new File(backupDir, PREV_BACKUP_FILE_NAME);
FileUtils.copyFile(configBackupFile, prevConfigBackupFile);
}
BufferedWriter backupWriter =
new BufferedWriter(new FileWriter(configBackupFile));
for(String arg : args) {
backupWriter.write(arg);
backupWriter.newLine();
backupWriter.flush();
}
backupWriter.close();
} catch(IOException e) {
throw new RuntimeException("Unable to write configuration file " +
"due to: " + e.getMessage(), e);
}
}
protected String[] retrieveConfig(File configBackupFile) {
String[] config = null;
if(configBackupFile.exists()) {
ArrayList args = new ArrayList();
try {
BufferedReader backupReader =
new BufferedReader(new FileReader(configBackupFile));
String line = backupReader.readLine();
while(line != null) {
args.add(line);
line = backupReader.readLine();
}
config = args.toArray(new String[args.size()]);
} catch(IOException e) {
throw new RuntimeException("Unable to read configuration file " +
"due to: " + e.getMessage(), e);
}
}
return config;
}
/**
* Retrieves the configuration of the previous run of the Sync Tool.
* If there was no previous run, the backup file cannot be found, or
* the backup file cannot be read, returns null, otherwise returns the
* parsed configuration
* @param backupDir the current backup directory
* @return config for previous sync tool run, or null
*/
public SyncToolConfig retrievePrevConfig(File backupDir) {
File prevConfigBackupFile =
new File(backupDir, PREV_BACKUP_FILE_NAME);
if(prevConfigBackupFile.exists()) {
String[] prevConfigArgs = retrieveConfig(prevConfigBackupFile);
try {
return processStandardOptions(prevConfigArgs, false);
} catch (ParseException e) {
return null;
}
} else {
return null;
}
}
protected String getPasswordEnvVariable() {
return cmdLineUtil.getPasswordEnvVariable();
}
protected ConsolePrompt getConsole() {
return cmdLineUtil.getConsole();
}
}
