Package io.javaoperatorsdk.operator.config.loader.provider

Class EnvVarConfigProvider

java.lang.Object

io.javaoperatorsdk.operator.config.loader.provider.EnvVarConfigProvider

All Implemented Interfaces:

ConfigProvider

public class EnvVarConfigProvider
extends Object
implements ConfigProvider

A ConfigProvider that resolves configuration values from environment variables.

The key is converted to an environment variable name by replacing dots and hyphens with underscores and converting to upper case (e.g. josdk.cache-sync.timeout → JOSDK_CACHE_SYNC_TIMEOUT).

Supported value types are: String, Boolean, Integer, Long, Double, and Duration (ISO-8601 format, e.g. PT30S).

Constructor Summary

Constructors

Constructor	Description
EnvVarConfigProvider()

Method Summary

Modifier and Type	Method	Description
<T> Optional<T>	getValue(String key, Class<T> type)	Returns the value associated with key, converted to type, or an empty Optional if the key is not set.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

EnvVarConfigProvider

public EnvVarConfigProvider()

Method Details

getValue

public <T> Optional<T> getValue(String key,
 Class<T> type)

Description copied from interface: ConfigProvider

Returns the value associated with key, converted to type, or an empty Optional if the key is not set.

Specified by:

getValue in interface ConfigProvider

Type Parameters:

T - the value type

Parameters:

key - the dot-separated configuration key, e.g. josdk.cache.sync.timeout

type - the expected type of the value; supported types depend on the implementation

Returns:

an Optional containing the typed value, or empty if the key is absent