mirror of
https://github.com/matrix-org/dendrite.git
synced 2024-11-23 23:01:56 -06:00
61 lines
1.9 KiB
Markdown
61 lines
1.9 KiB
Markdown
# Code Style
|
||
|
||
In addition to standard Go code style (`gofmt`, `goimports`), we use `golangci-lint`
|
||
to run a number of linters, the exact list can be found under linters in [.golangci.yml](.golangci.yml).
|
||
[Installation](https://github.com/golangci/golangci-lint#install-golangci-lint) and [Editor
|
||
Integration](https://golangci-lint.run/usage/integrations/#editor-integration) for
|
||
it can be found in the readme of golangci-lint.
|
||
|
||
For rare cases where a linter is giving a spurious warning, it can be disabled
|
||
for that line or statement using a [comment
|
||
directive](https://golangci-lint.run/usage/false-positives/#nolint), e.g. `var
|
||
bad_name int //nolint:golint,unused`. This should be used sparingly and only
|
||
when its clear that the lint warning is spurious.
|
||
|
||
The linters can be run using [build/scripts/find-lint.sh](/build/scripts/find-lint.sh)
|
||
(see file for docs) or as part of a build/test/lint cycle using
|
||
[build/scripts/build-test-lint.sh](/build/scripts/build-test-lint.sh).
|
||
|
||
|
||
## Labels
|
||
|
||
In addition to `TODO` and `FIXME` we also use `NOTSPEC` to identify deviations
|
||
from the Matrix specification.
|
||
|
||
## Logging
|
||
|
||
We generally prefer to log with static log messages and include any dynamic
|
||
information in fields.
|
||
|
||
```golang
|
||
logger := util.GetLogger(ctx)
|
||
|
||
// Not recommended
|
||
logger.Infof("Finished processing keys for %s, number of keys %d", name, numKeys)
|
||
|
||
// Recommended
|
||
logger.WithFields(logrus.Fields{
|
||
"numberOfKeys": numKeys,
|
||
"entityName": name,
|
||
}).Info("Finished processing keys")
|
||
```
|
||
|
||
This is useful when logging to systems that natively understand log fields, as
|
||
it allows people to search and process the fields without having to parse the
|
||
log message.
|
||
|
||
|
||
## Visual Studio Code
|
||
|
||
If you use VSCode then the following is an example of a workspace setting that
|
||
sets up linting correctly:
|
||
|
||
```json
|
||
{
|
||
"go.lintTool":"golangci-lint",
|
||
"go.lintFlags": [
|
||
"--fast"
|
||
]
|
||
}
|
||
```
|