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forgejo/modules/log/event_writer_buffer.go

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feat: add a buffer writer to the logger, for internal use (#6551) Identical to console, file or conn but writes to a buffer instead. It is useful in two contexts: - tests that need to assert the logs in a way that is simpler than LogChecker. - capturing the logs of a given task to display in the web UI, return from the API, etc. Since all logged events at a given level are written to the buffer by default, it is best used with WriterMode.Expression to only keep the log lines of interest. ## Checklist The [contributor guide](https://forgejo.org/docs/next/contributor/) contains information that will be helpful to first time contributors. There also are a few [conditions for merging Pull Requests in Forgejo repositories](https://codeberg.org/forgejo/governance/src/branch/main/PullRequestsAgreement.md). You are also welcome to join the [Forgejo development chatroom](https://matrix.to/#/#forgejo-development:matrix.org). ### Tests - I added test coverage for Go changes... - [x] in their respective `*_test.go` for unit tests. - [ ] in the `tests/integration` directory if it involves interactions with a live Forgejo server. - I added test coverage for JavaScript changes... - [ ] in `web_src/js/*.test.js` if it can be unit tested. - [ ] in `tests/e2e/*.test.e2e.js` if it requires interactions with a live Forgejo server (see also the [developer guide for JavaScript testing](https://codeberg.org/forgejo/forgejo/src/branch/forgejo/tests/e2e/README.md#end-to-end-tests)). ### Documentation - [ ] I created a pull request [to the documentation](https://codeberg.org/forgejo/docs) to explain to Forgejo users how to use this change. - [x] I did not document these changes and I do not expect someone else to do it. ### Release notes - [x] I do not want this change to show in the release notes. - [ ] I want the title to show in the release notes with a link to this pull request. - [ ] I want the content of the `release-notes/<pull request number>.md` to be be used for the release notes instead of the title. Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/6551 Reviewed-by: Antonin Delpeuch <wetneb@noreply.codeberg.org> Co-authored-by: Earl Warren <contact@earl-warren.org> Co-committed-by: Earl Warren <contact@earl-warren.org>
2025-01-13 13:40:24 +00:00
// Copyright 2025 The Forgejo Authors.
// SPDX-License-Identifier: GPL-3.0-or-later
package log
import (
"bytes"
)
type EventWriterBuffer struct {
*EventWriterBaseImpl
Buffer *bytes.Buffer
}
var _ EventWriter = (*EventWriterBuffer)(nil)
func NewEventWriterBuffer(name string, mode WriterMode) *EventWriterBuffer {
w := &EventWriterBuffer{EventWriterBaseImpl: NewEventWriterBase(name, "buffer", mode)}
w.Buffer = new(bytes.Buffer)
w.OutputWriteCloser = nopCloser{w.Buffer}
return w
}