Auto-install borg...

Kai Reinhard

15.51.2019 91c24ab5c6bafe0b3f5a83b018ed6feb31cfc225

 borgbutler-server/src/main/java/de/micromata/borgbutler/server/BorgInstallation.java

@@ -22,8 +22,6 @@
    private Logger log = LoggerFactory.getLogger(BorgInstallation.class);
    private static final BorgInstallation instance = new BorgInstallation();

    private BorgVersion borgVersion = new BorgVersion();

    public static BorgInstallation getInstance() {
        return instance;
    }
@@ -35,36 +33,76 @@
                return;
            }
        }
        String[] binary = getBinary(RunningMode.getOSType());
        File file = download(binary);
        configuration.setBorgCommand(file.getAbsolutePath());
        initialize(getBinary(RunningMode.getOSType()));
        if (version(configuration)) {
            return;
        }
        BorgVersion borgVersion = ServerConfiguration.get()._getBorgVersion();
        log.warn("No working borg version found. Please configure a borg version with minimal version '" + borgVersion.getMinimumRequiredBorgVersion() + "'.");
    }

    /**
     * @return a clone of this.borgVersion.
     * Configures a new borg configuration if modifications was done.
     * @param oldVersion The old version before this current modification.
     */
    public BorgVersion getVersion() {
        return new BorgVersion().copyFrom(borgVersion);
    public void configure(BorgVersion oldVersion) {
        Configuration configuration = ConfigurationHandler.getConfiguration();
        BorgVersion newVersion = ServerConfiguration.get()._getBorgVersion();
        boolean borgBinaryChanged = !StringUtils.equals(oldVersion.getBorgBinary(), newVersion.getBorgBinary());
        boolean manualBorgCommand = "manual".equals(newVersion.getBorgBinary());
        if (manualBorgCommand) {
            boolean borgCommandChanged = !StringUtils.equals(oldVersion.getBorgCommand(), newVersion.getBorgCommand());
            if (borgCommandChanged) {
                configuration.setBorgCommand(newVersion.getBorgCommand());
                version(configuration);
            }
        } else {
            if (borgBinaryChanged) {
                newVersion.setBorgCommand(oldVersion.getBorgCommand()); // Don't modify borg command, if not manual.
                initialize(getBinary(newVersion.getBorgBinary()));
            } else {
                newVersion.copyFrom(oldVersion); // Restore all old settings.
            }
        }
    }

    private boolean initialize(String[] binary) {
        if (binary == null) {
            return false;
        }
        Configuration configuration = ConfigurationHandler.getConfiguration();
        File file = download(binary);
        BorgVersion borgVersion = ServerConfiguration.get()._getBorgVersion();
        if (file != null) {
            configuration.setBorgCommand(file.getAbsolutePath());
            borgVersion.setBorgCommand(file.getAbsolutePath());
            borgVersion.setBorgBinary(binary[0]);
        }
        return version(configuration);
    }

    private boolean version(Configuration configuration) {
        String versionString = BorgCommands.version();
        boolean versionOK = false;
        BorgVersion borgVersion = ServerConfiguration.get()._getBorgVersion();
        String msg = null;
        if (versionString != null) {
            borgVersion.setVersion(versionString);
            int cmp = versionString.compareTo(borgVersion.getMinimumRequiredBorgVersion());
            if (cmp < 0) {
                log.info("Found borg version '" + versionString + "' is less than minimum required version '" + borgVersion.getMinimumRequiredBorgVersion() + "'.");
                msg = "Found borg version '" + versionString + "' is less than minimum required version '" + borgVersion.getMinimumRequiredBorgVersion() + "'.";
                log.info(msg);
            } else {
                versionOK = true;
                log.info("Found borg '" + configuration.getBorgCommand() + "', version: " + versionString + " (equals to or newer than '" + borgVersion.getMinimumRequiredBorgVersion()
                        + "', OK).");
                msg = "Found borg '" + configuration.getBorgCommand() + "', version: " + versionString + " (equals to or newer than '" + borgVersion.getMinimumRequiredBorgVersion()
                        + "', OK).";
                log.info(msg);
            }
        } else {
            msg = "Couldn't execute borg command '" + configuration.getBorgCommand() + "'.";
        }
        borgVersion.setVersionOK(versionOK);
        borgVersion.setStatusMessage(msg);
        return versionOK;
    }

@@ -81,9 +119,14 @@
                os = "freebsd64";
                break;
        }
        return getBinary(os);
    }

    private String[] getBinary(String os) {
        if (os == null) {
            return null;
        }
        BorgVersion borgVersion = ServerConfiguration.get()._getBorgVersion();
        for (String[] binary : borgVersion.getBorgBinaries()) {
            if (binary[0].contains(os)) {
                return binary;
@@ -107,6 +150,7 @@
            // File already downloaded, nothing to do.
            return file;
        }
        BorgVersion borgVersion = ServerConfiguration.get()._getBorgVersion();
        String url = borgVersion.getBinariesDownloadUrl() + getDownloadFilename(binary);
        log.info("Trying to download borg binary '" + binary[0] + "' (" + binary[1] + ") from url: " + url + "...");
        HttpClientBuilder builder = HttpClients.custom()
@@ -137,6 +181,7 @@
            log.info("Creating binary directory: " + dir.getAbsolutePath());
            dir.mkdirs();
        }
        BorgVersion borgVersion = ServerConfiguration.get()._getBorgVersion();
        return new File(dir, getDownloadFilename(binary) + "-" + borgVersion.getBinariesDownloadVersion());
    }