wasm: support http(s) fetch of Wasm files

[evacchi]

Signed-off-by: Edoardo Vacchi [email protected]

Description

We add support to simple HTTP(S) fetch of (optionally compressed) Wasm files; i.e. not tarballs, but compressed responses from an HTTP(S) server. Will update docs later, opening draft in the meantime, for early feedback.

Issue reference

This addresses issue #2700 without closing, because we don't support tar.gz files yet.

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Extended the documentation: see docs(wasm): support http(s) fetch of Wasm files docs#3625

[evacchi]

/cc @codefromthecrypt FYI

[codefromthecrypt]

bikeshed as code looks good to me. fetch is a browser term and doesnt clarify anything here. maybe rename more direct? from httpFetch to httpGet and the file to http.go glad to know go conveniently implements what we need for compression and thanks for the docs.

[Taction]

Thanks! LGTM overall.
Newly added files missed the copyright header. Also, please fix the lint error, you can find the error here or run make lint in the root dictionary https://github.com/dapr/components-contrib/actions/runs/5623856267/job/15286217988?pr=3005.
This is the header:

/*
Copyright 2023 The Dapr Authors
Licensed 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 implieout.
See the License for the specific language governing permissions and
limitations under the License.
*/

[evacchi]

thanks, I have also renamed httpfetcher.go -> http.go and httpFetcher.fetch to httpClient.get

[ItalyPaleAle]

I accidentally didn't submit my reivew. Overall LGTM but some comments

[ItalyPaleAle]

Thanks! Will merge when tests pass

[evacchi]

some changes were committed by mistake (arg handling), those I may revisit separately in another PR. Thanks for your patience @ItalyPaleAle