Struct Config 

pub struct Config {
    pub target_emails: Vec<String>,
    pub webhook_url: String,
    pub smtp_bind_address: String,
    pub smtp_port: u16,
    pub health_check_bind_address: String,
    pub health_check_port: u16,
    pub header_prefixes: Vec<String>,
    pub webhook_timeout_secs: u64,
    pub webhook_max_retries: u32,
    pub circuit_breaker_threshold: u32,
    pub circuit_breaker_reset_secs: u64,
}

Holds the application’s runtime configuration settings.

These settings are typically loaded from environment variables via from_env.

Fields

target_emails: Vec<String>

The list of email addresses MailLaser will accept mail for. (Required: MAIL_LASER_TARGET_EMAILS, comma-separated)

webhook_url: String

The URL where the extracted email payload will be sent via POST request. (Required: MAIL_LASER_WEBHOOK_URL)

smtp_bind_address: String

The IP address the SMTP server should listen on. (Optional: MAIL_LASER_BIND_ADDRESS, Default: “0.0.0.0”)

smtp_port: u16

The network port the SMTP server should listen on. (Optional: MAIL_LASER_PORT, Default: 2525)

health_check_bind_address: String

The IP address the health check HTTP server should listen on. (Optional: MAIL_LASER_HEALTH_BIND_ADDRESS, Default: “0.0.0.0”)

health_check_port: u16

The network port the health check HTTP server should listen on. (Optional: MAIL_LASER_HEALTH_PORT, Default: 8080)

header_prefixes: Vec<String>

Header name prefixes to match and forward in the webhook payload. (Optional: MAIL_LASER_HEADER_PREFIX, comma-separated, Default: empty)

webhook_timeout_secs: u64

Webhook request timeout in seconds. (Optional: MAIL_LASER_WEBHOOK_TIMEOUT, Default: 30)

webhook_max_retries: u32

Max retry attempts on webhook delivery failure. (Optional: MAIL_LASER_WEBHOOK_MAX_RETRIES, Default: 3)

circuit_breaker_threshold: u32

Consecutive failures required to open the circuit breaker. (Optional: MAIL_LASER_CIRCUIT_BREAKER_THRESHOLD, Default: 5)

circuit_breaker_reset_secs: u64

Seconds before a tripped circuit breaker half-opens. (Optional: MAIL_LASER_CIRCUIT_BREAKER_RESET, Default: 60)

Implementations

impl Config

pub fn from_env() -> Result<Self>

Loads configuration settings from environment variables.

Reads variables prefixed with MAIL_LASER_. Supports loading from a .env file if present. Provides default values for bind addresses and ports if not specified. Logs the configuration values being used.

Errors

Returns an Err if:

• Required environment variables (MAIL_LASER_TARGET_EMAILS, MAIL_LASER_WEBHOOK_URL) are missing or MAIL_LASER_TARGET_EMAILS is empty/invalid.
• Optional port variables (MAIL_LASER_PORT, MAIL_LASER_HEALTH_PORT) are set but cannot be parsed as u16.

Trait Implementations

impl Clone for Config

fn clone(&self) -> Config

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Config

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Config

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Config

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.