Package org.confng.sources

Class SystemPropertySource

java.lang.Object

org.confng.sources.SystemPropertySource

All Implemented Interfaces:

ConfigSource

public class SystemPropertySource
extends Object
implements ConfigSource

Configuration source that reads from Java system properties.

This source provides access to Java system properties set via -D command line arguments or System.setProperty() calls.

Since:

1.0

Author:

Bharat Kumar Malviya, GitHub: github.com/imBharatMalviya

See Also:

ConfigSource

Constructor Summary

Constructors

Constructor	Description
SystemPropertySource()	Creates a new SystemPropertySource using System.getProperties().
SystemPropertySource(Properties properties)	Creates a new SystemPropertySource with custom properties (for testing).

Method Summary

Modifier and Type	Method	Description
Optional<String>	get(String key)	Retrieves a configuration value for the given key.
String	getName()	Returns the name of this configuration source.
int	getPriority()	Returns the priority of this configuration source.

Methods inherited from class java.lang.Object

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

Constructor Detail

SystemPropertySource

public SystemPropertySource()

Creates a new SystemPropertySource using System.getProperties().

SystemPropertySource

public SystemPropertySource(Properties properties)

Creates a new SystemPropertySource with custom properties (for testing).

Parameters:

properties - the properties to use

Method Detail

getName

public String getName()

Description copied from interface: ConfigSource

Returns the name of this configuration source.

Specified by:

getName in interface ConfigSource

Returns:

the source name, never null

get

public Optional<String> get(String key)

Description copied from interface: ConfigSource

Retrieves a configuration value for the given key.

If the key is not found in this source, an empty Optional should be returned. This allows the ConfNG system to try other sources in the resolution chain.

Specified by:

get in interface ConfigSource

Parameters:

key - the configuration key to look up

Returns:

an Optional containing the value if found, empty otherwise

getPriority

public int getPriority()

Description copied from interface: ConfigSource

Returns the priority of this configuration source.

Sources with higher priority values are consulted first in the resolution chain. Default priorities:

• 100+ - Secret managers and secure sources
• 80-99 - TestNG parameters and test-specific sources
• 60-79 - Environment variables
• 40-59 - System properties
• 20-39 - Configuration files (JSON, Properties)
• 0-19 - Default and fallback sources

Specified by:

getPriority in interface ConfigSource

Returns:

the priority value, higher values have higher priority