Struct ExternalDatabaseConfig 

pub struct ExternalDatabaseConfig {
    pub kind: String,
    pub url_env: String,
    pub read_url_env: Option<String>,
    pub pool_max: Option<u32>,
    pub read_only: bool,
    pub allow_preview: bool,
    pub connect_timeout_secs: Option<u64>,
}

One external (bring-your-own) SQL database for the handler sql binding. The connection URL is a secret and is named indirectly (url_env), never written in the config file.

Fields

kind: String

Engine: postgres (aliases postgresql/pg) or mysql (alias mariadb).

url_env: String

Name of the env var holding the connection URL (e.g. postgres://user:pw@host/db). Required.

read_url_env: Option<String>

Optional env var holding a read-replica connection URL. When set, open-read-only transactions route there; writes stay on url_env.

pool_max: Option<u32>

Maximum pooled connections (default 8).

read_only: bool

Open every transaction READ ONLY (the engine rejects writes) — for a database functions should only read.

allow_preview: bool

Permit preview deployments to reach this database. Default false: a preview is refused, so it can never touch the operator’s live external DB.

connect_timeout_secs: Option<u64>

Connection/acquire timeout in seconds (default 10).

Trait Implementations

impl Clone for ExternalDatabaseConfig

fn clone(&self) -> ExternalDatabaseConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExternalDatabaseConfig

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

Formats the value using the given formatter.

impl Default for ExternalDatabaseConfig

fn default() -> ExternalDatabaseConfig

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ExternalDatabaseConfig

where ExternalDatabaseConfig: Default,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.