package de.micromata.borgbutler.server;
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import de.micromata.borgbutler.BorgCommands;
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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 org.apache.commons.io.FileUtils;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.http.HttpResponse;
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import org.apache.http.client.config.CookieSpecs;
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import org.apache.http.client.config.RequestConfig;
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import org.apache.http.client.methods.HttpGet;
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import org.apache.http.impl.client.CloseableHttpClient;
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import org.apache.http.impl.client.HttpClientBuilder;
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import org.apache.http.impl.client.HttpClients;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.File;
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import java.io.IOException;
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public class BorgInstallation {
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private Logger log = LoggerFactory.getLogger(BorgInstallation.class);
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private static final BorgInstallation instance = new BorgInstallation();
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public static BorgInstallation getInstance() {
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return instance;
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}
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public void initialize() {
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Configuration configuration = ConfigurationHandler.getConfiguration();
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if (StringUtils.isNotBlank(configuration.getBorgCommand())) {
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if (version(configuration)) {
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return;
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}
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}
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initialize(getBinary(RunningMode.getOSType()));
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if (version(configuration)) {
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return;
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}
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BorgVersion borgVersion = ServerConfiguration.get()._getBorgVersion();
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log.warn("No working borg version found. Please configure a borg version with minimal version '" + borgVersion.getMinimumRequiredBorgVersion() + "'.");
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}
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/**
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* Configures a new borg configuration if modifications was done.
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* @param oldVersion The old version before this current modification.
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*/
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public void configure(BorgVersion oldVersion) {
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Configuration configuration = ConfigurationHandler.getConfiguration();
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BorgVersion newVersion = ServerConfiguration.get()._getBorgVersion();
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boolean borgBinaryChanged = !StringUtils.equals(oldVersion.getBorgBinary(), newVersion.getBorgBinary());
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boolean manualBorgCommand = "manual".equals(newVersion.getBorgBinary());
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if (manualBorgCommand) {
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boolean borgCommandChanged = !StringUtils.equals(oldVersion.getBorgCommand(), newVersion.getBorgCommand());
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if (borgCommandChanged) {
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configuration.setBorgCommand(newVersion.getBorgCommand());
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version(configuration);
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} else {
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newVersion.copyFrom(oldVersion); // Restore all old settings.
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}
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} else {
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if (borgBinaryChanged) {
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newVersion.setBorgCommand(oldVersion.getBorgCommand()); // Don't modify borg command, if not manual.
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initialize(getBinary(newVersion.getBorgBinary()));
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} else {
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newVersion.copyFrom(oldVersion); // Restore all old settings.
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}
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}
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}
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private boolean initialize(String[] binary) {
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if (binary == null) {
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return false;
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}
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Configuration configuration = ConfigurationHandler.getConfiguration();
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File file = download(binary);
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BorgVersion borgVersion = ServerConfiguration.get()._getBorgVersion();
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if (file != null) {
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configuration.setBorgCommand(file.getAbsolutePath());
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borgVersion.setBorgCommand(file.getAbsolutePath());
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borgVersion.setBorgBinary(binary[0]);
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}
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return version(configuration);
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}
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private boolean version(Configuration configuration) {
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String versionString = BorgCommands.version();
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boolean versionOK = false;
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BorgVersion borgVersion = ServerConfiguration.get()._getBorgVersion();
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String msg = null;
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if (versionString != null) {
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borgVersion.setVersion(versionString);
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int cmp = versionString.compareTo(borgVersion.getMinimumRequiredBorgVersion());
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if (cmp < 0) {
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msg = "Found borg version '" + versionString + "' is less than minimum required version '" + borgVersion.getMinimumRequiredBorgVersion() + "'.";
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log.info(msg);
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} else {
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versionOK = true;
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msg = "Found borg '" + configuration.getBorgCommand() + "', version: " + versionString + " (equals to or newer than '" + borgVersion.getMinimumRequiredBorgVersion()
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+ "', OK).";
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log.info(msg);
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}
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} else {
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msg = "Couldn't execute borg command '" + configuration.getBorgCommand() + "'.";
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}
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borgVersion.setVersionOK(versionOK);
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borgVersion.setStatusMessage(msg);
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return versionOK;
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}
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private String[] getBinary(RunningMode.OSType osType) {
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String os = null;
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switch (osType) {
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case MAC_OS:
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os = "mac";
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break;
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case LINUX:
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os = "linux64";
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break;
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case FREEBSD:
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os = "freebsd64";
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break;
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}
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return getBinary(os);
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}
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private String[] getBinary(String os) {
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if (os == null) {
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return null;
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}
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BorgVersion borgVersion = ServerConfiguration.get()._getBorgVersion();
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for (String[] binary : borgVersion.getBorgBinaries()) {
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if (binary[0].contains(os)) {
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return binary;
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}
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}
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return null;
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}
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File download(RunningMode.OSType osType) {
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String[] binary = getBinary(osType);
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if (binary == null) {
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log.info("Can't download binary (no binary found for OS '" + osType + "'.");
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return null;
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}
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return download(binary);
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}
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private File download(String[] binary) {
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File file = getBinaryFile(binary);
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if (file.exists()) {
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// File already downloaded, nothing to do.
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return file;
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}
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BorgVersion borgVersion = ServerConfiguration.get()._getBorgVersion();
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String url = borgVersion.getBinariesDownloadUrl() + getDownloadFilename(binary);
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log.info("Trying to download borg binary '" + binary[0] + "' (" + binary[1] + ") from url: " + url + "...");
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HttpClientBuilder builder = HttpClients.custom()
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.setDefaultRequestConfig(RequestConfig.custom()
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.setCookieSpec(CookieSpecs.STANDARD).build());
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try (CloseableHttpClient httpClient = builder.build()) {
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HttpGet getRequest = new HttpGet(url);
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HttpResponse response = httpClient.execute(getRequest);
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if (response.getStatusLine().getStatusCode() != 200) {
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throw new RuntimeException("Failed : HTTP error code : "
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+ response.getStatusLine().getStatusCode());
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}
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FileUtils.copyInputStreamToFile(response.getEntity().getContent(), file);
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log.info("Downloaded: " + file.getAbsolutePath());
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file.setExecutable(true, false);
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return file;
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} catch (IOException ex) {
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log.error(ex.getMessage(), ex);
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return null;
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}
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}
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private File getBinaryFile(String[] binary) {
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File dir = new File(ConfigurationHandler.getInstance().getWorkingDir(), "bin");
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if (!dir.exists()) {
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log.info("Creating binary directory: " + dir.getAbsolutePath());
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dir.mkdirs();
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}
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BorgVersion borgVersion = ServerConfiguration.get()._getBorgVersion();
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return new File(dir, getDownloadFilename(binary) + "-" + borgVersion.getBinariesDownloadVersion());
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}
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private String getDownloadFilename(String[] binary) {
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return "borg-" + binary[0];
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}
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private BorgInstallation() {
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}
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}
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