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package logger
import (
"fmt"
"go.uber.org/zap"
core "go.uber.org/zap/zapcore"
)
type ZapAdapter struct {
zl *zap.Logger
}
// NewZapAdapter ... which uses general log interface
func NewZapAdapter(zapLogger *zap.Logger) *ZapAdapter {
return &ZapAdapter{
zl: zapLogger.WithOptions(zap.AddCallerSkip(1)),
}
}
func separateFields(keyVals []interface{}) ([]zap.Field, []interface{}) {
var fields []zap.Field
var pairedKeyVals []interface{}
for key := range keyVals {
switch value := keyVals[key].(type) {
case zap.Field:
fields = append(fields, value)
case core.ObjectMarshaler:
fields = append(fields, zap.Inline(value))
default:
pairedKeyVals = append(pairedKeyVals, value)
}
}
return fields, pairedKeyVals
}
func (log *ZapAdapter) fields(keyvals []interface{}) []zap.Field {
// separate any zap fields from other structs
zapFields, keyvals := separateFields(keyvals)
// we should have even number of keys and values
if len(keyvals)%2 != 0 {
return []zap.Field{zap.Error(fmt.Errorf("odd number of keyvals pairs: %v", keyvals))}
}
fields := make([]zap.Field, 0, len(keyvals)/2+len(zapFields))
for i := 0; i < len(keyvals); i += 2 {
key, ok := keyvals[i].(string)
if !ok {
key = fmt.Sprintf("%v", keyvals[i])
}
fields = append(fields, zap.Any(key, keyvals[i+1]))
}
// add all the fields
fields = append(fields, zapFields...)
return fields
}
func (log *ZapAdapter) Debug(msg string, keyvals ...interface{}) {
log.zl.Debug(msg, log.fields(keyvals)...)
}
func (log *ZapAdapter) Info(msg string, keyvals ...interface{}) {
log.zl.Info(msg, log.fields(keyvals)...)
}
func (log *ZapAdapter) Warn(msg string, keyvals ...interface{}) {
log.zl.Warn(msg, log.fields(keyvals)...)
}
func (log *ZapAdapter) Error(msg string, keyvals ...interface{}) {
log.zl.Error(msg, log.fields(keyvals)...)
}
func (log *ZapAdapter) With(keyvals ...interface{}) Logger {
return NewZapAdapter(log.zl.With(log.fields(keyvals)...))
}
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