Module io.helidon.config
Package io.helidon.config.spi

Interface Source

All Known Subinterfaces:
ConfigSource, NodeConfigSource, OverrideSource, ParsableSource
All Known Implementing Classes:
AbstractConfigSource, AbstractSource, ClasspathConfigSource, ClasspathOverrideSource, ConfigSources.SystemPropertiesConfigSource, DirectoryConfigSource, EtcdConfigSource, FileConfigSource, FileOverrideSource, GitConfigSource, InMemoryOverrideSource, MapConfigSource, PrefixedConfigSource, SecretBundleLazyConfigSource, SecretBundleNodeConfigSource, UrlConfigSource, UrlOverrideSource
public interface Source
Source of data. The actual loading of the data depends on the type of the source.
See Also:

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Interface
    Description
    static interface 
    Source.Builder<B extends Source.Builder<B>>
    Configurable options of a Source.

  • Method Summary

    Modifier and Type
    Method
    Description
    default String
    description()
    Short, human-readable summary referring to the underlying source.
    default boolean
    exists()
    If the underlying data exist at this time.
    default boolean
    optional()
    Whether this source is optional.
    default Optional<RetryPolicy>
    retryPolicy()
    Retry policy configured on this config source.

  • Method Details

    • description

      default String description()
      Short, human-readable summary referring to the underlying source.

      For example, a file path or a URL or any other information that helps the user recognize the underlying origin of the data this Source provides.

      Default is the implementation class simple name with any "Source" suffix removed.

      Returns:
      description of the source

    • exists

      default boolean exists()
      If the underlying data exist at this time. This is to prevent us loading such a source if we know it does not exist.
      Returns:
      true if the source exists, false otherwise

    • retryPolicy

      default Optional<RetryPolicy> retryPolicy()
      Retry policy configured on this config source.
      Returns:
      configured retry policy

    • optional

      default boolean optional()
      Whether this source is optional.
      Returns:
      return true for optional source, returns false by default