restore v0.3.0

handler/otel/helpers.go

@@ -0,0 +1,56 @@
+package otel
+
+import (
+	"context"
+
+	"gitoa.ru/go-4devs/log/entry"
+	"gitoa.ru/go-4devs/log/level"
+	"go.opentelemetry.io/otel/api/trace"
+	"go.opentelemetry.io/otel/label"
+)
+
+const (
+	fieldSeverityNumber = "SeverityNumber"
+	fieldSeverityText   = "SeverityText"
+	levelFields         = 2
+)
+
+func levels(lvl level.Level) Level {
+	switch lvl {
+	case level.Emergency:
+		return levelError3
+	case level.Alert:
+		return levelFatal
+	case level.Critical:
+		return levelError2
+	case level.Error:
+		return levelError
+	case level.Warning:
+		return levelWarn
+	case level.Notice:
+		return levelInfo2
+	case level.Info:
+		return levelInfo
+	case level.Debug:
+		return levelDebug
+	}
+
+	return 0
+}
+
+func addEvent(ctx context.Context, e *entry.Entry) {
+	span := trace.SpanFromContext(ctx)
+	attrs := make([]label.KeyValue, 0, e.Fields().Len()+levelFields)
+
+	lvl := levels(e.Level())
+	attrs = append(attrs,
+		label.String(fieldSeverityText, lvl.String()),
+		label.Int(fieldSeverityNumber, int(lvl)),
+	)
+
+	for _, field := range e.Fields() {
+		attrs = append(attrs, label.String(string(field.Key()), field.Value().String()))
+	}
+
+	span.AddEvent(ctx, e.Message(), attrs...)
+}

handler/otel/level.go

@@ -0,0 +1,16 @@
+package otel
+
+//go:generate stringer -type=Level -linecomment -output=level_string.go
+
+type Level int
+
+const (
+	levelDebug  Level = 5  // DEBUG
+	levelInfo   Level = 9  // INFO
+	levelInfo2  Level = 10 // INFO2
+	levelWarn   Level = 13 // WARN
+	levelError  Level = 17 // ERROR
+	levelError2 Level = 18 // ERROR2
+	levelError3 Level = 19 // ERROR3
+	levelFatal  Level = 21 // FATAL
+)

handler/otel/level_string.go

@@ -0,0 +1,51 @@
+// Code generated by "stringer -type=Level -linecomment -output=level_string.go"; DO NOT EDIT.
+
+package otel
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[levelDebug-5]
+	_ = x[levelInfo-9]
+	_ = x[levelInfo2-10]
+	_ = x[levelWarn-13]
+	_ = x[levelError-17]
+	_ = x[levelError2-18]
+	_ = x[levelError3-19]
+	_ = x[levelFatal-21]
+}
+
+const (
+	_Level_name_0 = "DEBUG"
+	_Level_name_1 = "INFOINFO2"
+	_Level_name_2 = "WARN"
+	_Level_name_3 = "ERRORERROR2ERROR3"
+	_Level_name_4 = "FATAL"
+)
+
+var (
+	_Level_index_1 = [...]uint8{0, 4, 9}
+	_Level_index_3 = [...]uint8{0, 5, 11, 17}
+)
+
+func (i Level) String() string {
+	switch {
+	case i == 5:
+		return _Level_name_0
+	case 9 <= i && i <= 10:
+		i -= 9
+		return _Level_name_1[_Level_index_1[i]:_Level_index_1[i+1]]
+	case i == 13:
+		return _Level_name_2
+	case 17 <= i && i <= 19:
+		i -= 17
+		return _Level_name_3[_Level_index_3[i]:_Level_index_3[i+1]]
+	case i == 21:
+		return _Level_name_4
+	default:
+		return "Level(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+}

handler/otel/logger.go

@@ -0,0 +1,16 @@
+package otel
+
+import (
+	"context"
+
+	"gitoa.ru/go-4devs/log"
+	"gitoa.ru/go-4devs/log/entry"
+)
+
+func New() log.Logger {
+	return func(ctx context.Context, e *entry.Entry) (int, error) {
+		addEvent(ctx, e)
+
+		return 0, nil
+	}
+}

handler/otel/middleware.go

@@ -0,0 +1,16 @@
+package otel
+
+import (
+	"context"
+
+	"gitoa.ru/go-4devs/log"
+	"gitoa.ru/go-4devs/log/entry"
+)
+
+func Middleware() log.Middleware {
+	return func(ctx context.Context, e *entry.Entry, handler log.Logger) (int, error) {
+		addEvent(ctx, e)
+
+		return handler(ctx, e)
+	}
+}