private List<ServiceDescriptor> getServiceInventory(SlotStatus slotStatus) {
    Assignment assignment = slotStatus.getAssignment();
    if (assignment == null) {
      return null;
    }

    String config = assignment.getConfig();

    File cacheFile = getCacheFile(config);
    if (cacheFile.canRead()) {
      try {
        String json = CharStreams.toString(Files.newReaderSupplier(cacheFile, Charsets.UTF_8));
        List<ServiceDescriptor> descriptors = descriptorsJsonCodec.fromJson(json);
        invalidServiceInventory.remove(config);
        return descriptors;
      } catch (Exception ignored) {
        // delete the bad cache file
        cacheFile.delete();
      }
    }

    InputSupplier<? extends InputStream> configFile =
        ConfigUtils.newConfigEntrySupplier(repository, config, "airship-service-inventory.json");
    if (configFile == null) {
      return null;
    }

    try {
      String json;
      try {
        json = CharStreams.toString(CharStreams.newReaderSupplier(configFile, Charsets.UTF_8));
      } catch (FileNotFoundException e) {
        // no service inventory in the config, so replace with json null so caching works
        json = "null";
      }
      invalidServiceInventory.remove(config);

      // cache json
      cacheFile.getParentFile().mkdirs();
      Files.write(json, cacheFile, Charsets.UTF_8);

      List<ServiceDescriptor> descriptors = descriptorsJsonCodec.fromJson(json);
      return descriptors;
    } catch (Exception e) {
      if (invalidServiceInventory.add(config)) {
        log.error(e, "Unable to read service inventory for %s" + config);
      }
    }
    return null;
  }
Beispiel #2
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  public static InputSupplier<InputStream> newConfigEntrySupplier(
      Repository repository, String config, final String entryName) {
    URI uri = repository.configToHttpUri(config);
    if (uri == null) {
      return null;
    }

    URL configUrl;
    try {
      configUrl = uri.toURL();
    } catch (MalformedURLException e) {
      throw new RuntimeException("Invalid config bundle location " + uri);
    }

    return ConfigUtils.newConfigEntrySupplier(
        Resources.newInputStreamSupplier(configUrl), entryName);
  }
  @Override
  public Deployment install(Installation installation) {
    Preconditions.checkNotNull(installation, "installation is null");

    File deploymentDir = new File(baseDir, "installation");

    Assignment assignment = installation.getAssignment();

    Deployment newDeployment =
        new Deployment(
            slotId, location, deploymentDir, getDataDir(), assignment, installation.getResources());
    File tempDir = createTempDir(baseDir, "tmp-install");
    try {
      // download the binary
      File binary = new File(tempDir, "airship-binary.tar.gz");
      try {
        Files.copy(Resources.newInputStreamSupplier(installation.getBinaryFile().toURL()), binary);
      } catch (IOException e) {
        throw new RuntimeException(
            "Unable to download binary "
                + assignment.getBinary()
                + " from "
                + installation.getBinaryFile(),
            e);
      }

      // unpack the binary into a temp unpack dir
      File unpackDir = new File(tempDir, "unpack");
      unpackDir.mkdirs();
      try {
        extractTar(binary, unpackDir, tarTimeout);
      } catch (CommandFailedException e) {
        throw new RuntimeException(
            "Unable to extract tar file " + assignment.getBinary() + ": " + e.getMessage());
      }

      // find the archive root dir (it should be the only file in the temp unpack dir)
      List<File> files = listFiles(unpackDir);
      if (files.size() != 1) {
        throw new RuntimeException(
            "Invalid tar file: file does not have a root directory " + assignment.getBinary());
      }
      File binaryRootDir = files.get(0);

      // unpack config bundle
      try {
        URL url = installation.getConfigFile().toURL();
        ConfigUtils.unpackConfig(Resources.newInputStreamSupplier(url), binaryRootDir);
      } catch (Exception e) {
        throw new RuntimeException(
            "Unable to extract config bundle " + assignment.getConfig() + ": " + e.getMessage());
      }

      // installation is good, clear the current deployment
      if (this.deployment != null) {
        this.deploymentFile.delete();
        deleteRecursively(this.deployment.getDeploymentDir());
        this.deployment = null;
      }

      // save deployment versions file
      try {
        save(newDeployment);
      } catch (IOException e) {
        throw new RuntimeException("Unable to save deployment file", e);
      }

      // move the binary root directory to the final target
      try {
        Files.move(binaryRootDir, deploymentDir);
      } catch (IOException e) {
        throw new RuntimeException("Unable to move deployment to final location", e);
      }
    } finally {
      if (!deleteRecursively(tempDir)) {
        log.warn("Unable to delete temp directory: %s", tempDir.getAbsolutePath());
      }
    }

    this.deployment = newDeployment;
    return newDeployment;
  }