SpringEnvironmentPropertySource Class — spring-boot Architecture

Source Code

core/spring-boot/src/main/java/org/springframework/boot/logging/log4j2/SpringEnvironmentPropertySource.java lines 29–59

class SpringEnvironmentPropertySource implements PropertySource {

	/**
	 * System properties take precedence followed by properties in Log4j properties files.
	 */
	private static final int PRIORITY = -100;

	private volatile @Nullable Environment environment;

	@Override
	public int getPriority() {
		return PRIORITY;
	}

	@Override
	public @Nullable String getProperty(String key) {
		Environment environment = this.environment;
		return (environment != null) ? environment.getProperty(key) : null;
	}

	@Override
	public boolean containsProperty(String key) {
		Environment environment = this.environment;
		return environment != null && environment.containsProperty(key);
	}

	void setEnvironment(@Nullable Environment environment) {
		this.environment = environment;
	}

}