MySQL connector for pmcp-server-toolkit.

Pure-Rust + Lambda-deployable: sqlx 0.8.6 with tls-rustls-aws-lc-rs (no OpenSSL) per feedback_avoid_docker_pure_rust_lambda memory.

[MysqlConnector] implements the toolkit's 3-method SqlConnector trait: dialect, execute (canonical :name placeholders translated to ? via translate_placeholders), and schema_text (driven by information_schema.columns filtered by the MySQL database name).

REVIEWS M3: [MysqlConnector::connect] uses MySqlPool::connect_lazy to defer TCP I/O to first use. connect_lazy parses the URL synchronously, so a malformed URL returns [ConnectorError::Connection] immediately, while a real connection failure surfaces on the first execute / schema_text call. The pub async fn signature is retained for API symmetry with PostgresConnector::connect and to leave room for a future connect_eager variant that DOES open the connection.

REVIEWS H5: the dev_mock feature exposes pmcp_toolkit_mysql::dev_mock::MysqlMock for examples + downstream integration tests. It is NOT enabled by default.

Security

[ConnectorError::Connection] error text NEVER contains the raw URL or its password — the password segment is redacted via [sanitize_url] before the error is constructed (T-84-06-02).

Example

# use pmcp_toolkit_mysql::MysqlConnector;
# #[tokio::main]
# async fn main() -> Result<(), Box<dyn std::error::Error>> {
let conn = MysqlConnector::connect("mysql://localhost/mydb").await?;
# Ok(())
# }