Define an interface for local and remote storage

[ankur22]

What?

Define an interface that exports a persist method, abstracting away how or where the file is being persisted.

Why?

The browser module can take screenshots. These screenshots are currently either:

1. Persisted to the local disk relative to the k6 binary;
2. Returned to the user in the test script for them to do something with the binary data.

When a user works with the first option, we want the browser module to either:

1. persist the file to the local disk;
2. or upload it to remote location.

The interface needs to be generic enough to allow for both these cases, and it's only exported method should be to persist a blob of data.

How?

Define an interface that takes:

1. the context;
2. the file path;
3. the stream of data.

which will satisfy the requirement of abstracting away the how and where the file is being saved.

It is a good idea to generalise the problem (use io.writer) to a blob of data even though the main use case is to store the screenshots so that we can stream the data either to disk or a remote location.

Tasks

Tasks

Beta Give feedback

1. PR
2. Update the k6 release notes

Related PR(s)/Issue(s)

Take a look at grafana/k6#3017 for some more guidance.

[ankur22]

The interface implementation work has been moved to #1160.