forked from TrueCloudLab/xk6-frostfs
Evgenii Stratonikov
4ea872d6c3
Previous iteration was bad, because `Logger` instance was shared and
endpoints in different VUs were overriding each other.
New interface is much better, it supports logger extension in any
context with arbitrary fields.
```
const l = logging.new().withFields({endpoint: "my endpoint"});
...
l.withField("cid", container).info("not found");
```
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
package logging
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import (
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"github.com/dop251/goja"
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"github.com/sirupsen/logrus"
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"go.k6.io/k6/js/modules"
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)
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// Logging represents an instance of the module for every VU.
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type Logging struct {
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vu modules.VU
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}
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// RootModule is the global module object type. It is instantiated once per test
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// run and will be used to create k6/x/frostfs/logging module instances for each VU.
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type RootModule struct{}
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// Ensure the interfaces are implemented correctly.
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var (
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_ modules.Instance = &Logging{}
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_ modules.Module = &RootModule{}
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)
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func init() {
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modules.Register("k6/x/frostfs/logging", new(RootModule))
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}
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// Exports implements the modules.Instance interface and returns the exports
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// of the JS module.
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func (n *Logging) Exports() modules.Exports {
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return modules.Exports{Default: n}
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}
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type logger struct {
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logrus.FieldLogger
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}
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func (n *Logging) New() logger {
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return logger{FieldLogger: n.vu.InitEnv().Logger}
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}
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func (l logger) WithFields(fields *goja.Object) logger {
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lg := l.FieldLogger
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for _, k := range fields.Keys() {
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lg = lg.WithField(k, fields.Get(k))
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}
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return logger{FieldLogger: lg}
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}
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// NewModuleInstance implements the modules.Module interface and returns
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// a new instance for each VU.
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func (r *RootModule) NewModuleInstance(vu modules.VU) modules.Instance {
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lg, ok := vu.InitEnv().Logger.(*logrus.Logger)
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if !ok {
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return &Logging{vu: vu}
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}
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format := lg.Formatter
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switch f := format.(type) {
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case *logrus.TextFormatter:
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f.ForceColors = true
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f.FullTimestamp = true
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f.TimestampFormat = "15:04:05"
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case *logrus.JSONFormatter:
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f.TimestampFormat = "15:04:05"
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}
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return &Logging{vu: vu}
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}
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