Add cargo-lambda scaffold

Cargo.toml

@@ -0,0 +1,4 @@
+[workspace]
+members = [
+  "lambdas/*",
+]

lambdas/query-metrics/.gitignore

@@ -0,0 +1 @@
+/target

lambdas/query-metrics/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "query-metrics"
+version = "0.1.0"
+edition = "2021"
+
+# Starting in Rust 1.62 you can use `cargo add` to add dependencies 
+# to your project.
+#
+# If you're using an older Rust version,
+# download cargo-edit(https://github.com/killercup/cargo-edit#installation) 
+# to install the `add` subcommand.
+#
+# Running `cargo add DEPENDENCY_NAME` will
+# add the latest version of a dependency to the list,
+# and it will keep the alphabetic ordering for you.
+
+[dependencies]
+aws_lambda_events = { version = "0.12.0", default-features = false, features = ["eventbridge"] }
+
+lambda_runtime = "0.8.3"
+tokio = { version = "1", features = ["macros"] }
+tracing = { version = "0.1", features = ["log"] }
+tracing-subscriber = { version = "0.3", default-features = false, features = ["fmt"] }
+

lambdas/query-metrics/src/main.rs

@@ -0,0 +1,26 @@
+use aws_lambda_events::event::eventbridge::EventBridgeEvent;use lambda_runtime::{run, service_fn, Error, LambdaEvent};
+
+
+/// This is the main body for the function.
+/// Write your code inside it.
+/// There are some code example in the following URLs:
+/// - https://github.com/awslabs/aws-lambda-rust-runtime/tree/main/examples
+/// - https://github.com/aws-samples/serverless-rust-demo/
+async fn function_handler(event: LambdaEvent<EventBridgeEvent>) -> Result<(), Error> {
+    // Extract some useful information from the request
+
+    Ok(())
+}
+
+#[tokio::main]
+async fn main() -> Result<(), Error> {
+    tracing_subscriber::fmt()
+        .with_max_level(tracing::Level::INFO)
+        // disable printing the name of the module in every log line.
+        .with_target(false)
+        // disabling time is handy because CloudWatch will add the ingestion time.
+        .without_time()
+        .init();
+
+    run(service_fn(function_handler)).await
+}