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Introduce lambda-http module based on lando to support API Gateway (#18)
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‎Cargo.lock

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‎Cargo.toml

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[workspace]
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members = [
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"lambda-runtime-client",
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"lambda-runtime"
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"lambda-runtime",
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"lambda-http"
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]

‎README.md

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[![Build Status](https://travis-ci.org/awslabs/aws-lambda-rust-runtime.svg?branch=master)](https://travis-ci.org/awslabs/aws-lambda-rust-runtime)
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This package makes it easy to run AWS Lambda Functions written in Rust. This workspace includes two crates:
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This package makes it easy to run AWS Lambda Functions written in Rust. This workspace includes multiple crates:
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* **`lambda-runtime-client`** is a client SDK for the Lambda Runtime APIs. You probably don't need to use this crate directly!
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* **`lambda-runtime`** is a library that makes it easy to write Lambda functions in Rust.
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* **`lambda-http`** is a library that makes it easy to write API Gateway proxy event focused Lambda functions in Rust.
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## Example function
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## lambda-runtime-client
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Defines the `RuntimeClient` trait and provides its `HttpRuntimeClient` implementation. The client fetches events and returns output as `Vec<u8>`.
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Defines the `RuntimeClient` trait and provides its `HttpRuntimeClient` implementation. The client fetches events and returns output as `Vec<u8>`.
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For error reporting to the runtime APIs the library defines the `RuntimeApiError` trait and the `ErrorResponse` object. Custom errors for the APIs should implement the `to_response() -> ErrorResponse` method of the `RuntimeApiError` trait.
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‎lambda-http/Cargo.toml

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[package]
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name = "lambda_http"
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version = "0.1.0"
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authors = ["Doug Tangren"]
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description = "Rust API Gateway proxy event interfaces for AWS Lambda"
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keywords = ["AWS", "Lambda", "APIGateway", "Rust", "API"]
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license = "Apache-2.0"
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homepage = "https://github.com/awslabs/aws-lambda-rust-runtime"
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repository = "https://github.com/awslabs/aws-lambda-rust-runtime"
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documentation = "https://docs.rs/lambda_runtime"
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[dependencies]
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http = "0.1"
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serde = "^1"
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serde_json = "^1"
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serde_derive = "^1"
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lambda_runtime = { path = "../lambda-runtime", version = "^0.1" }
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tokio = "^0.1"
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base64 = "0.10"
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failure = "0.1"
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failure_derive = "0.1"
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serde_urlencoded = "0.5"
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[dev-dependencies]
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log = "^0.4"
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simple_logger = "^1"

‎lambda-http/examples/basic.rs

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extern crate lambda_http as http;
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extern crate lambda_runtime as runtime;
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extern crate log;
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extern crate simple_logger;
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use http::{lambda, Body, Request, RequestExt, Response};
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use runtime::{error::HandlerError, Context};
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use log::error;
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use std::error::Error;
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fn main() -> Result<(), Box<dyn Error>> {
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simple_logger::init_with_level(log::Level::Debug).unwrap();
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lambda!(my_handler);
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Ok(())
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}
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fn my_handler(e: Request, c: Context) -> Result<Response<Body>, HandlerError> {
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Ok(match e.query_string_parameters().get("first_name") {
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Some(first_name) => Response::new(format!("Hello, {}!", first_name).into()),
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_ => {
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error!("Empty first name in request {}", c.aws_request_id);
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Response::builder()
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.status(400)
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.body::<Body>("Empty first name".into())
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.expect("failed to render response")
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}
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})
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}

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