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focalboard/mattermost-plugin/server/logtarget.go
Doug Lauder a76385268e
MM-38342 plugin logging (#1193)
- bump chat server version
- plugin logging adapter
2021-09-15 09:01:05 -04:00

98 lines
2.3 KiB
Go

package main
import (
"bytes"
"encoding/json"
"fmt"
pluginapi "github.com/mattermost/mattermost-plugin-api"
"github.com/mattermost/mattermost-server/v6/shared/mlog"
)
const (
pluginTargetType = "focalboard_plugin_adapter"
)
// pluginTargetFactory creates a plugin log adapter when a custom target type appears in
// the logging configuration.
type pluginTargetFactory struct {
logService *pluginapi.LogService
}
func newPluginTargetFactory(logService *pluginapi.LogService) pluginTargetFactory {
return pluginTargetFactory{
logService: logService,
}
}
func (ptf pluginTargetFactory) createTarget(targetType string, options json.RawMessage) (mlog.Target, error) {
if targetType != pluginTargetType {
return nil, ErrInvalidTargetType{targetType}
}
return newPluginAdapterTarget(ptf.logService), nil
}
// pluginLogAdapter is a simple log target that writes to the plugin API.
type pluginLogAdapter struct {
logService *pluginapi.LogService
}
func newPluginAdapterTarget(logService *pluginapi.LogService) mlog.Target {
return &pluginLogAdapter{
logService: logService,
}
}
func (pla *pluginLogAdapter) Init() error {
return nil
}
func (pla *pluginLogAdapter) Shutdown() error {
return nil
}
func (pla *pluginLogAdapter) Write(p []byte, rec *mlog.LogRec) (int, error) {
fields := rec.Fields()
args := make([]interface{}, 0, len(fields)*2)
buf := &bytes.Buffer{}
var err error
for _, fld := range fields {
err = fld.ValueString(buf, mlog.ShouldQuote)
if err != nil {
return 0, err
}
args = append(args, fld.Key, buf.String())
buf.Reset()
}
switch rec.Level() {
case mlog.LvlDebug:
pla.logService.Debug(rec.Msg(), args...)
case mlog.LvlError:
pla.logService.Error(rec.Msg(), args...)
case mlog.LvlInfo:
pla.logService.Info(rec.Msg(), args...)
case mlog.LvlWarn:
pla.logService.Warn(rec.Msg(), args...)
case mlog.LvlCritical, mlog.LvlFatal:
args = append(args, mlog.String("level", rec.Level().Name))
pla.logService.Error(rec.Msg(), args...)
default:
args = append(args, mlog.String("level", rec.Level().Name))
pla.logService.Info(rec.Msg(), args...)
}
return 0, nil
}
// ErrInvalidTargetType is returned when a log config factory does not recognize the
// target type.
type ErrInvalidTargetType struct {
name string
}
func (e ErrInvalidTargetType) Error() string {
return fmt.Sprintf("invalid log target type '%s'", e.name)
}