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Differential D5679

[services][blob] Introduce S3 primitives
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Authored by bartek on Nov 18 2022, 9:41 AM.
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ashoat
atul
tomek

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Reviewers
• jon
varun
tomek
marcin
Commits
rCOMM7c865a63f7ec: [services][blob] Introduce S3 primitives
Summary

Introduced two S3 primitives:

  • S3 path - a convenience struct to store object and bucket name. See C++ counterpart
  • Multipart upload session - needed for Put requests to upload large blobs to S3. See C++ counterpart. Its implementation is added in the subsequent diff.

Depends on D5678

Test Plan

Added two simple unit tests for S3Path.

Diff Detail

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rCOMM Comm
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Event Timeline

bartek created this revision.Nov 18 2022, 9:41 AM
bartek held this revision as a draft.
Herald added a reviewer: • jon. · View Herald TranscriptNov 18 2022, 9:41 AM
Herald added subscribers: atul, tomek, ashoat. · View Herald Transcript
bartek added reviewers: varun, tomek, marcin.Nov 18 2022, 9:41 AM
Harbormaster completed remote builds in B13568: Diff 18587.Nov 18 2022, 9:54 AM
bartek added a child revision: D5680: [services][blob] Implement S3 multipart upload.Nov 18 2022, 9:57 AM
bartek published this revision for review.Nov 18 2022, 10:38 AM
ashoat added 1 blocking reviewer(s): varun.Nov 18 2022, 12:58 PM

Would be great if @varun could review all of @bartek's work on the blob service in Rust, given it touches AWS. @bartek, if @varun doesn't respond on diffs feel free to ping him on Comm

tomek requested changes to this revision.Nov 22 2022, 7:09 AM
tomek added inline comments.
services/blob/src/s3.rs
17 ↗(On Diff #18587)

It is almost never a good idea to panic in the code. We should handle errors more gracefully, by e.g. returning Result.

29 ↗(On Diff #18587)

It's usually more convenient to use format! macro

52 ↗(On Diff #18587)

You can probably use a shorthand: Result<(), anyhow::Error> should work the same as Result<()>

63 ↗(On Diff #18587)

It might be a good idea to add a test with invalid path

This revision now requires changes to proceed.Nov 22 2022, 7:09 AM
tomek added inline comments.Nov 22 2022, 9:24 AM
services/blob/src/s3.rs
13–14 ↗(On Diff #18587)

Why do we use triple slashes?

bartek added inline comments.Nov 23 2022, 3:45 AM
services/blob/src/s3.rs
13–14 ↗(On Diff #18587)

Rustdoc - IDE displays a pretty description when you hover on a function name.

Counterpart of

/**
 * Some description
 */

in JS

17 ↗(On Diff #18587)

I panicked, because I'm sick of this Option/Result unwrapping hell. But in this case, this shouldn't be a problem so I'll change that

52 ↗(On Diff #18587)

Yes, you're right. I'll change that everywhere

63 ↗(On Diff #18587)

Yes, I'll add it

bartek updated this revision to Diff 18801.Nov 24 2022, 12:01 AM
  • Used short form of anyhow::Result
  • The S3Path::from_full_path now returns Result
  • Used format! macro
  • Added a unit test for invalid path
Harbormaster completed remote builds in B13721: Diff 18801.Nov 24 2022, 12:11 AM
tomek accepted this revision.Nov 24 2022, 1:43 AM
tomek added inline comments.
services/blob/src/s3.rs
34 ↗(On Diff #18801)
13–14 ↗(On Diff #18587)

Ok, that makes sense!

varun accepted this revision.Nov 28 2022, 10:55 PM
This revision is now accepted and ready to land.Nov 28 2022, 10:55 PM
varun added inline comments.Nov 28 2022, 11:50 PM
services/blob/src/s3.rs
17 ↗(On Diff #18587)

I think Rust now supports let-else statements which might feel more ergonomic to you for unpacking Results and Options

bartek added inline comments.Nov 29 2022, 12:04 AM
services/blob/src/s3.rs
17 ↗(On Diff #18587)

Yes, since 1.65 (we're using 1.61 IIRC) - there are tasks for this: ENG-2002, ENG-2003

Closed by commit rCOMM7c865a63f7ec: [services][blob] Introduce S3 primitives (authored by bartek). · Explain WhyNov 29 2022, 5:15 AM
This revision was automatically updated to reflect the committed changes.
bartek added a commit: rCOMM7c865a63f7ec: [services][blob] Introduce S3 primitives.

Revision Contents
Changeset List

PathSize
services/
blob/
src/
1 line
95 lines

Diff 18935

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services/blob/src/main.rs

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services/blob/src/s3.rs

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