IConfigReader

Description

The IConfigReader interface is used in configuration readers that retrieve a configuration from various sources and make it availale for other components.

Important points

• Some IConfigReader implementations may support configuration parameterization.
• The parameterization allows to use configuration as a template and inject there dynamic values. The values may come from application command like arguments or environment variables.

Instance methods

addChangeListener

Adds a listener that will be notified when configuration is changed

void addChangeListener(INotifiable listener)

• listener: INotifiable - a listener to be added.

removeChangeListener

Remove a previously added change listener.

void removeChangeListener(INotifiable listener)

• listener: INotifiable - a listener to be removed.

readConfig

Reads configuration and parameterizes it with given values.

Future<ConfigParams> readConfig(String? correlationId, ConfigParams parameters)

• correlationId: string - (optional) transaction id used to trace execution through the call chain.
• parameters: ConfigParams - values of the configuration or null to skip parameterization.
• returns: Future<ConfigParams> - ConfigParams configuration.