ConfigSource (ConfNG 1.1.1 API)

All Known Implementing Classes:

AbstractFileConfigSource, ConsulConfigSource, EnvSource, HttpConfigSource, JsonSource, PropertiesSource, SecretManagerSource, SpringCloudConfigSource, SystemPropertySource, TestNGParameterSource, TomlSource, YamlSource
```
public interface ConfigSource
```
Interface for configuration sources used by ConfNG.
This interface defines the contract for configuration sources that can provide configuration values to the ConfNG system. Implementations can read from various sources such as environment variables, system properties, properties files, JSON files, or custom sources.

Since:

1.0

Author:

Bharat Kumar Malviya, GitHub: github.com/imBharatMalviya

See Also:

ConfNG

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
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.
`default int`	`getPriority()`	Returns the priority of this configuration source.

- Method Detail
  - getName
```
String getName()
```
    Returns the name of this configuration source.
    
    Returns:
    
    the source name, never null
  - get
```
Optional<String> get(String key)
```
    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.
    
    Parameters:
    
    key - the configuration key to look up
    
    Returns:
    
    an Optional containing the value if found, empty otherwise
  - getPriority
```
default int getPriority()
```
    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
    Returns:
    
    the priority value, higher values have higher priority