Class ConfigSources

A collection of utilities for working with and creating ConfigSources.

Index

Constructors

Methods

default defaultForTargets merge parseArgs toConfig

Constructors

constructor

new ConfigSources(): ConfigSources
Returns ConfigSources

Methods

`Static`default

default(options: ConfigSourcesDefaultOptions): ConfigSource
Creates the default config source for Backstage.
Parameters
- options: ConfigSourcesDefaultOptions
  Options
Returns ConfigSource
The default Backstage config source

Remarks
This will read from app-config.yaml and app-config.local.yaml by default, as well as environment variables prefixed with APP_CONFIG_. If --config <path|url> command line arguments are passed, these will override the default configuration file paths. URLs are only supported if the remote option is provided.
- Defined in packages/config-loader/src/sources/ConfigSources.ts:254

`Static`defaultForTargets

defaultForTargets(options: ConfigSourcesDefaultForTargetsOptions): ConfigSource
Creates the default config sources for the provided targets.
Parameters
- options: ConfigSourcesDefaultForTargetsOptions
  Options
Returns ConfigSource
A config source for the provided targets

Remarks
This will create FileConfigSources and RemoteConfigSources for the provided targets, and merge them together to a single source. If no targets are provided it will fall back to app-config.yaml and app-config.local.yaml.

URL targets are only supported if the remote option is provided.
- Defined in packages/config-loader/src/sources/ConfigSources.ts:157

`Static`merge

merge(sources: ConfigSource[]): ConfigSource
Merges multiple config sources into a single source that reads from all sources and concatenates the result.
Parameters
- sources: ConfigSource[]
  The config sources to merge
Returns ConfigSource
A single config source that concatenates the data from the given sources
- Defined in packages/config-loader/src/sources/ConfigSources.ts:274

`Static`parseArgs

parseArgs(argv?: string[]): ConfigSourceTarget[]
Parses command line arguments and returns the config targets.
Parameters
- argv: string[] = process.argv
  The command line arguments to parse. Defaults to process.argv
Returns ConfigSourceTarget[]
A list of config targets
- Defined in packages/config-loader/src/sources/ConfigSources.ts:125

`Static`toConfig

toConfig(source: ConfigSource): Promise<ClosableConfig>
Creates an observable @backstage/config#Config implementation from a ConfigSource.
Parameters
- source: ConfigSource
  The config source to read from
Returns Promise<ClosableConfig>
A promise that resolves to a closable config
Remarks
If you only want to read the config once you can close the returned config immediately.
Example
```
const sources = ConfigSources.default(...)
const config = await ConfigSources.toConfig(source)
config.close()
const example = config.getString(...)
```
- Defined in packages/config-loader/src/sources/ConfigSources.ts:297