Add IMDSv1 fallback (#2609) #2610
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| // Licensed to the Apache Software Foundation (ASF) under one | ||
| // or more contributor license agreements. See the NOTICE file | ||
| // distributed with this work for additional information | ||
| // regarding copyright ownership. The ASF licenses this file | ||
| // to you under the Apache License, Version 2.0 (the | ||
| // "License"); you may not use this file except in compliance | ||
| // with the License. You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, | ||
| // software distributed under the License is distributed on an | ||
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| // KIND, either express or implied. See the License for the | ||
| // specific language governing permissions and limitations | ||
| // under the License. | ||
|
|
||
| use hyper::service::{make_service_fn, service_fn}; | ||
| use hyper::{Body, Request, Response, Server}; | ||
| use parking_lot::Mutex; | ||
| use std::collections::VecDeque; | ||
| use std::convert::Infallible; | ||
| use std::net::SocketAddr; | ||
| use std::sync::Arc; | ||
| use tokio::sync::oneshot; | ||
| use tokio::task::JoinHandle; | ||
|
|
||
| pub type ResponseFn = Box<dyn FnOnce(Request<Body>) -> Response<Body> + Send>; | ||
|
|
||
| /// A mock server | ||
| pub struct MockServer { | ||
| responses: Arc<Mutex<VecDeque<ResponseFn>>>, | ||
| shutdown: oneshot::Sender<()>, | ||
| handle: JoinHandle<()>, | ||
| url: String, | ||
| } | ||
|
|
||
| impl MockServer { | ||
| pub fn new() -> Self { | ||
| let responses: Arc<Mutex<VecDeque<ResponseFn>>> = | ||
| Arc::new(Mutex::new(VecDeque::with_capacity(10))); | ||
|
|
||
| let r = Arc::clone(&responses); | ||
| let make_service = make_service_fn(move |_conn| { | ||
| let r = Arc::clone(&r); | ||
| async move { | ||
| Ok::<_, Infallible>(service_fn(move |req| { | ||
| let r = Arc::clone(&r); | ||
| async move { | ||
| Ok::<_, Infallible>(match r.lock().pop_front() { | ||
| Some(r) => r(req), | ||
| None => Response::new(Body::from("Hello World")), | ||
| }) | ||
| } | ||
| })) | ||
| } | ||
| }); | ||
|
|
||
| let (shutdown, rx) = oneshot::channel::<()>(); | ||
| let server = | ||
| Server::bind(&SocketAddr::from(([127, 0, 0, 1], 0))).serve(make_service); | ||
|
|
||
| let url = format!("http://{}", server.local_addr()); | ||
|
|
||
| let handle = tokio::spawn(async move { | ||
| server | ||
| .with_graceful_shutdown(async { | ||
| rx.await.ok(); | ||
| }) | ||
| .await | ||
| .unwrap() | ||
| }); | ||
|
|
||
| Self { | ||
| responses, | ||
| shutdown, | ||
| handle, | ||
| url, | ||
| } | ||
| } | ||
|
|
||
| /// The url of the mock server | ||
| pub fn url(&self) -> &str { | ||
| &self.url | ||
| } | ||
|
|
||
| /// Add a response | ||
| pub fn push(&self, response: Response<Body>) { | ||
| self.push_fn(|_| response) | ||
| } | ||
|
|
||
| /// Add a response function | ||
| pub fn push_fn<F>(&self, f: F) | ||
| where | ||
| F: FnOnce(Request<Body>) -> Response<Body> + Send + 'static, | ||
| { | ||
| self.responses.lock().push_back(Box::new(f)) | ||
| } | ||
|
|
||
| /// Shutdown the mock server | ||
| pub async fn shutdown(self) { | ||
| let _ = self.shutdown.send(()); | ||
| self.handle.await.unwrap() | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
There wasn't an obvious way to use the ec2-metadata-mock to test this fallback, so I opted to reuse the plumbing from the retry tests. More test coverage can't hurt 😄