package de.micromata.borgbutler;
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import de.micromata.borgbutler.config.BorgRepoConfig;
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import de.micromata.borgbutler.config.Configuration;
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import de.micromata.borgbutler.config.ConfigurationHandler;
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import de.micromata.borgbutler.config.Definitions;
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import de.micromata.borgbutler.data.Repository;
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import de.micromata.borgbutler.json.JsonUtils;
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import de.micromata.borgbutler.json.borg.*;
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import de.micromata.borgbutler.utils.DateUtils;
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import org.apache.commons.exec.CommandLine;
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import org.apache.commons.exec.DefaultExecutor;
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import org.apache.commons.exec.PumpStreamHandler;
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import org.apache.commons.exec.environment.EnvironmentUtils;
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import org.apache.commons.io.output.ByteArrayOutputStream;
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import org.apache.commons.lang3.ObjectUtils;
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import org.apache.commons.lang3.StringUtils;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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import java.util.Scanner;
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public class BorgCommands {
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private static Logger log = LoggerFactory.getLogger(BorgCommands.class);
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/**
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* Executes borg info repository.
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*
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* @param repoConfig
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* @return Parsed repo config returned by Borg command (without archives).
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*/
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public static Repository info(BorgRepoConfig repoConfig) {
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String json = execute(repoConfig, "info", repoConfig.getRepo(), "--json");
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if (json == null) {
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return null;
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}
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BorgRepoInfo repoInfo = JsonUtils.fromJson(BorgRepoInfo.class, json);
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BorgRepository borgRepository = repoInfo.getRepository();
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Repository repository = new Repository()
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.setId(borgRepository.getId())
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.setName(repoConfig.getRepo())
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.setDisplayName(repoConfig.getDisplayName())
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.setLastModified(DateUtils.get(borgRepository.getLastModified()))
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.setLocation(borgRepository.getLocation())
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.setCache(repoInfo.getCache())
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.setEncryption(repoInfo.getEncryption())
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.setSecurityDir(repoInfo.getSecurityDir());
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return repository;
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}
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/**
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* Executes borg list repository.
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* The given repository will be cloned and archives will be added.
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* The field {@link Repository#getLastModified()} of masterRepository will be updated.
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*
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* @param masterRepository Repository without archives.
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* @return Parsed repo config returned by Borg command including archives.
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*/
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public static Repository list(BorgRepoConfig repoConfig, Repository masterRepository) {
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String json = execute(repoConfig, "list", masterRepository.getName(), "--json");
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if (json == null) {
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log.error("Can't load archives from repo '" + masterRepository.getName() + "'.");
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return null;
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}
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BorgRepoList repoList = JsonUtils.fromJson(BorgRepoList.class, json);
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if (repoList == null) {
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log.error("Can't load archives from repo '" + masterRepository.getName() + "'.");
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return null;
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}
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masterRepository.setLastModified(repoList.getRepository().getLastModified());
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Repository repository = ObjectUtils.clone(masterRepository)
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.setArchives(repoList.getArchives());
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return repository;
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}
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/**
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* Executes borg info archive
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*
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* @param repoConfig
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* @param archive
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* @return
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*/
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public static BorgArchiveInfo info(BorgRepoConfig repoConfig, String archive) {
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String json = execute(repoConfig, "info", repoConfig.getRepo() + "::" + archive, "--json");
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if (json == null) {
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return null;
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}
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BorgArchiveInfo archiveInfo = JsonUtils.fromJson(BorgArchiveInfo.class, json);
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return archiveInfo;
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}
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public static List<BorgFilesystemItem> listArchiveContent(BorgRepoConfig repoConfig, BorgArchive archive) {
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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execute(outputStream, repoConfig, "list", repoConfig.getRepo() + "::" + archive.getArchive(),
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"--json-lines");
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String response = outputStream.toString(Definitions.STD_CHARSET);
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List<BorgFilesystemItem> content = new ArrayList<>();
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try (Scanner scanner = new Scanner(response)) {
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while (scanner.hasNextLine()) {
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String json = scanner.nextLine();
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BorgFilesystemItem item = JsonUtils.fromJson(BorgFilesystemItem.class, json);
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content.add(item);
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}
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}
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return content;
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}
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private static String execute(BorgRepoConfig repoConfig, String command, String repoOrArchive, String... args) {
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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execute(outputStream, repoConfig, command, repoOrArchive, args);
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String json = outputStream.toString(Definitions.STD_CHARSET);
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return json;
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}
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private static void execute(OutputStream outputStream, BorgRepoConfig repoConfig, String command, String repoOrArchive, String... args) {
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CommandLine cmdLine = new CommandLine(ConfigurationHandler.getConfiguration().getBorgCommand());
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cmdLine.addArgument(command);
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for (String arg : args) {
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if (arg != null)
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cmdLine.addArgument(arg);
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}
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cmdLine.addArgument(repoOrArchive);
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DefaultExecutor executor = new DefaultExecutor();
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//executor.setExitValue(2);
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//ExecuteWatchdog watchdog = new ExecuteWatchdog(60000);
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//executor.setWatchdog(watchdog);
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// ExecuteResultHandler handler = new DefaultExecuteResultHandler();
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PumpStreamHandler streamHandler = new PumpStreamHandler(outputStream);
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executor.setStreamHandler(streamHandler);
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String borgCall = cmdLine.getExecutable() + " " + StringUtils.join(cmdLine.getArguments(), " ");
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log.info("Executing '" + borgCall + "'...");
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try {
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executor.execute(cmdLine, getEnvironment(repoConfig));
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} catch (Exception ex) {
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log.error("Error while creating environment for borg call '" + borgCall + "': " + ex.getMessage(), ex);
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log.error("Response: " + StringUtils.abbreviate(outputStream.toString(), 10000));
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return;
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}
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}
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private static Map<String, String> getEnvironment(BorgRepoConfig repoConfig) throws IOException {
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Configuration config = ConfigurationHandler.getConfiguration();
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Map<String, String> env = EnvironmentUtils.getProcEnvironment();
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addEnvironmentVariable(env, "BORG_REPO", repoConfig.getRepo());
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addEnvironmentVariable(env, "BORG_RSH", repoConfig.getRsh());
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addEnvironmentVariable(env, "BORG_PASSPHRASE", repoConfig.getPassphrase());
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String passcommand = repoConfig.getPasswordCommand();
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if (StringUtils.isNotBlank(passcommand)) {
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// For MacOS BORG_PASSCOMMAND="security find-generic-password -a $USER -s borg-passphrase -w"
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passcommand = passcommand.replace("$USER", System.getProperty("user.name"));
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addEnvironmentVariable(env, "BORG_PASSCOMMAND", passcommand);
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}
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return env;
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}
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private static void addEnvironmentVariable(Map<String, String> env, String name, String value) {
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if (StringUtils.isNotBlank(value)) {
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EnvironmentUtils.addVariableToEnvironment(env, name + "=" + value);
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}
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}
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}
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