Move Elasticsearch to source available 🎉 🎉 (#29015)

* Move Elasticsearch to source available

server/enterprise/elasticsearch/common/logger.go

@@ -0,0 +1,89 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See LICENSE.enterprise for license information.
+
+package common
+
+import (
+	"fmt"
+	"net/http"
+	"time"
+
+	"github.com/mattermost/logr/v2"
+	"github.com/mattermost/mattermost/server/public/shared/mlog"
+)
+
+func NewLogger(backend string, mlogger mlog.LoggerIFace, trace bool) *Logger {
+	return &Logger{
+		backend: backend,
+		logger:  mlogger,
+		trace:   trace,
+	}
+}
+
+// Logger is a target to pass to the Logger instance of the search backend.
+type Logger struct {
+	backend string
+	trace   bool
+	logger  mlog.LoggerIFace
+}
+
+// LogRoundTrip prints the information about request and response.
+func (l *Logger) LogRoundTrip(req *http.Request, res *http.Response, err error, start time.Time, dur time.Duration) error {
+	// Set error level.
+	// 0 = debug, 1=warn, 2=error
+	var level int
+	switch {
+	case err != nil:
+		level = 2
+	case res != nil && res.StatusCode > 0 && res.StatusCode < 500:
+		level = 0
+	case res != nil && res.StatusCode > 499:
+		level = 2
+	default:
+		level = 2
+	}
+
+	// Capture fields.
+	fields := []mlog.Field{
+		mlog.String("method", req.Method),
+		mlog.Int("status_code", res.StatusCode),
+		mlog.String("duration", dur.String()),
+		mlog.String("url", req.URL.String()),
+	}
+
+	var logFn func(string, ...logr.Field)
+	switch level {
+	case 0:
+		logFn = l.logger.Debug
+	case 1:
+		logFn = l.logger.Warn
+	case 2:
+		logFn = l.logger.Error
+	}
+	logFn(l.backend+" request", fields...)
+
+	return nil
+}
+
+// RequestBodyEnabled makes the client pass request body to logger
+func (l *Logger) RequestBodyEnabled() bool { return l.trace }
+
+// ResponseBodyEnabled makes the client pass response body to logger
+func (l *Logger) ResponseBodyEnabled() bool { return false }
+
+func NewBulkIndexerLogger(mlogger mlog.LoggerIFace, name string) BulkIndexerDebugLogger {
+	return BulkIndexerDebugLogger{
+		logger: mlogger,
+		name:   name,
+	}
+}
+
+type BulkIndexerDebugLogger struct {
+	logger mlog.LoggerIFace
+	name   string
+}
+
+func (bl BulkIndexerDebugLogger) Printf(str string, params ...any) {
+	line := fmt.Sprintf(str, params...)
+	bl.logger.Debug(line, mlog.String("workername", bl.name))
+}