Struct MultiSourceConfig 

pub struct MultiSourceConfig { /* private fields */ }

Multi-source configuration merger: collects configuration from files, environment variables, and a remote configuration center, then merges them by priority.

Implementations

impl MultiSourceConfig

pub fn new() -> Self

pub fn set_file_config(&mut self, config: HashMap<String, String>)

Set the file-source configuration

pub fn set_env_config(&mut self, config: HashMap<String, String>)

Set the environment-variable-source configuration

pub fn set_remote_config(&mut self, config: HashMap<String, String>)

Set the remote configuration center source configuration

pub fn load_env_vars(&mut self, prefix: &str)

Load configuration from system environment variables (with prefix filtering)

pub fn load_json(&mut self, json: &str) -> Result<(), String>

Load configuration from JSON file content

pub fn merge(&self) -> HashMap<String, String>

Merge all sources and return the result (higher priority overrides lower)

pub fn get(&self, key: &str) -> Option<String>

Get the merged configuration value

pub fn source_of(&self, key: &str) -> Option<ConfigSourcePriority>

Return the source priority of a key

Trait Implementations

impl Default for MultiSourceConfig

fn default() -> Self

Returns the “default value” for a type.