How to use

Configuration

in

com.hubspot.singularity.runner.base.configuration

@Configuration(filename = "/etc/singularity.s3downloader.yaml", consolidatedField = "s3downloader")
public class SingularityS3DownloaderConfiguration extends BaseRunnerConfiguration {
 @Min(1)

 @Override
 public T get() {
  final Configuration configuration = clazz.getAnnotation(Configuration.class);

  try {
   final File baseFile = new File(configuration.filename());
   final T baseConfig = baseFile.exists() ? objectMapper.readValue(baseFile, clazz) : clazz.newInstance();

   final JsonNode overrideNode = filename.isPresent() ? loadYamlField(filename.get(), configuration.consolidatedField()) : objectMapper.createObjectNode();

   final T config = objectMapper.readerForUpdating(baseConfig).readValue(overrideNode);

   final Set<ConstraintViolation<T>> violations = validator.validate(config);
   if (!violations.isEmpty()) {
    throw new ConfigurationValidationException(filename.or(configuration.filename()), violations);
   }

   return config;
  } catch (Exception e) {
   throw Throwables.propagate(e);
  }
 }
}

public void printProperties() {
 for (BaseRunnerConfiguration configuration : configurations) {
  try {
   final Configuration annotation = configuration.getClass().getAnnotation(Configuration.class);
   final String filename = consolidatedConfigFilename.or(annotation == null ? "(unknown)" : annotation.filename());
   LOG.trace(String.format("Loaded %s from %s:%n%s", configuration.getClass().getSimpleName(), filename, yamlMapper.writeValueAsString(configuration)));
  } catch (Exception e) {
   LOG.warn(String.format("Exception while attempting to print %s!", configuration.getClass().getName()), e);
  }
 }
}

public void printProperties() {
 for (BaseRunnerConfiguration configuration : configurations) {
  try {
   final Configuration annotation = configuration.getClass().getAnnotation(Configuration.class);
   final String filename = consolidatedConfigFilename.or(annotation == null ? "(unknown)" : annotation.filename());
   LOG.trace(String.format("Loaded %s from %s:%n%s", configuration.getClass().getSimpleName(), filename, yamlMapper.writeValueAsString(configuration)));
  } catch (Exception e) {
   LOG.warn(String.format("Exception while attempting to print %s!", configuration.getClass().getName()), e);
  }
 }
}

@Configuration(filename = "/etc/singularity.base.yaml", consolidatedField = "base")
public class SingularityRunnerBaseConfiguration extends BaseRunnerConfiguration {
 @DirectoryExists

 @Override
 public T get() {
  final Configuration configuration = clazz.getAnnotation(Configuration.class);

  try {
   final File baseFile = new File(configuration.filename());
   final T baseConfig = baseFile.exists() ? objectMapper.readValue(baseFile, clazz) : clazz.newInstance();

   final JsonNode overrideNode = filename.isPresent() ? loadYamlField(filename.get(), configuration.consolidatedField()) : objectMapper.createObjectNode();

   final T config = objectMapper.readerForUpdating(baseConfig).readValue(overrideNode);

   final Set<ConstraintViolation<T>> violations = validator.validate(config);
   if (!violations.isEmpty()) {
    throw new ConfigurationValidationException(filename.or(configuration.filename()), violations);
   }

   return config;
  } catch (Exception e) {
   throw Throwables.propagate(e);
  }
 }
}

@Configuration(filename = "/etc/singularity.s3base.yaml", consolidatedField = "s3")
public class SingularityS3Configuration extends BaseRunnerConfiguration {
 @NotEmpty

@Configuration(filename = "/etc/singularity.s3uploader.yaml", consolidatedField = "s3uploader")
public class SingularityS3UploaderConfiguration extends BaseRunnerConfiguration {
 @Min(0)

@Configuration(filename = "/etc/singularity.executor.cleanup.yaml", consolidatedField = "executorCleanup")
public class SingularityExecutorCleanupConfiguration extends BaseRunnerConfiguration {
 @JsonProperty

@Configuration(filename = "/etc/singularity.executor.yaml", consolidatedField = "executor")
public class SingularityExecutorConfiguration extends BaseRunnerConfiguration {
 @NotEmpty

@Configuration(filename = "/etc/singularity.base.yaml", consolidatedField = "base")
public class SingularityRunnerBaseConfiguration extends BaseRunnerConfiguration {
 @DirectoryExists