Skip to content

Call handler.poll_ready() before handler.call() #437

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Mar 3, 2022
Merged

Call handler.poll_ready() before handler.call() #437

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
73 changes: 44 additions & 29 deletions lambda-runtime/src/lib.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -13,8 +13,8 @@ use serde::{Deserialize, Serialize};
use std::{convert::TryFrom, env, fmt, future::Future, panic};
use tokio::io::{AsyncRead, AsyncWrite};
use tokio_stream::{Stream, StreamExt};
use tower::util::ServiceFn;
pub use tower::{self, service_fn, Service};
use tower::{util::ServiceFn, ServiceExt};
use tracing::{error, trace};

mod requests;
Expand Down Expand Up @@ -112,41 +112,56 @@ where
env::set_var("_X_AMZN_TRACE_ID", xray_trace_id);

let request_id = &ctx.request_id.clone();
let task = panic::catch_unwind(panic::AssertUnwindSafe(|| handler.call(LambdaEvent::new(body, ctx))));

let req = match task {
Ok(response) => match response.await {
Ok(response) => {
trace!("Ok response from handler (run loop)");
EventCompletionRequest {
request_id,
body: response,
}
.into_req()
}
Err(err) => {
error!("{:?}", err); // logs the error in CloudWatch
EventErrorRequest {
request_id,
diagnostic: Diagnostic {
error_type: type_name_of_val(&err).to_owned(),
error_message: format!("{}", err), // returns the error to the caller via Lambda API
},
let req = match handler.ready().await {
Ok(handler) => {
let task =
panic::catch_unwind(panic::AssertUnwindSafe(|| handler.call(LambdaEvent::new(body, ctx))));
match task {
Ok(response) => match response.await {
Ok(response) => {
trace!("Ok response from handler (run loop)");
EventCompletionRequest {
request_id,
body: response,
}
.into_req()
}
Err(err) => {
error!("{:?}", err); // logs the error in CloudWatch
EventErrorRequest {
request_id,
diagnostic: Diagnostic {
error_type: type_name_of_val(&err).to_owned(),
error_message: format!("{}", err), // returns the error to the caller via Lambda API
},
}
.into_req()
}
},
Err(err) => {
error!("{:?}", err);
EventErrorRequest {
request_id,
diagnostic: Diagnostic {
error_type: type_name_of_val(&err).to_owned(),
error_message: if let Some(msg) = err.downcast_ref::<&str>() {
format!("Lambda panicked: {}", msg)
} else {
"Lambda panicked".to_string()
},
},
}
.into_req()
}
.into_req()
}
},
}
Err(err) => {
error!("{:?}", err);
error!("{:?}", err); // logs the error in CloudWatch
EventErrorRequest {
request_id,
diagnostic: Diagnostic {
error_type: type_name_of_val(&err).to_owned(),
error_message: if let Some(msg) = err.downcast_ref::<&str>() {
format!("Lambda panicked: {}", msg)
} else {
"Lambda panicked".to_string()
},
error_message: format!("{}", err), // returns the error to the caller via Lambda API
},
}
.into_req()
Expand Down