Method new

lambda-runtime/src/runtime.rs:106–124

Create a new runtime that executes the provided handler for incoming requests. In order to start the runtime and poll for events on the [Lambda Runtime APIs](https://docs.aws.amazon.com/lambda/latest/dg/runtimes-api.html), you must call [Runtime::run]. Note that manually creating a [Runtime] does not add tracing to the executed handler as is done by [super::run]. If you want to add the default t

(handler: F)

    /// (`AWS_LAMBDA_FUNCTION_NAME`, `AWS_LAMBDA_FUNCTION_MEMORY_SIZE`,
    /// `AWS_LAMBDA_FUNCTION_VERSION`, `AWS_LAMBDA_RUNTIME_API`).
    pub fn new(handler: F) -> Self {
        trace!("Loading config from env");
        let config = Arc::new(Config::from_env());
        let concurrency_limit = max_concurrency_from_env().unwrap_or(1).max(1);
        // Strategy: allocate all worker tasks up-front, so size the client pool to match.
        let pool_size = concurrency_limit as usize;
        let client = Arc::new(
            ApiClient::builder()
                .with_pool_size(pool_size)
                .build()
                .expect("Unable to create a runtime client"),
        );
        Self {
            service: wrap_handler(handler, client.clone()),
            config,
            client,
            concurrency_limit,
        }
    }
}

impl<S> Runtime<S> {