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logger.go
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logger.go
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package logger
import (
"context"
"fmt"
"os"
"runtime"
"github.com/sirupsen/logrus"
"github.com/dalmarcogd/mobstore/users/internal/infra/ctxs"
"github.com/dalmarcogd/mobstore/users/internal/services"
)
type (
DefaultFields func(ctx context.Context, fields *map[string]interface{})
loggerService struct {
services.NoopHealth
serviceManager services.ServiceManager
ctx context.Context
logger *logrus.Logger
defaultFields DefaultFields
callerCount int
}
)
func New() *loggerService {
return &loggerService{
callerCount: 2,
}
}
func (s *loggerService) WithDefaultFields(f DefaultFields) *loggerService {
s.defaultFields = f
return s
}
func (s *loggerService) WithCallerCount(i int) services.Logger {
sC := *s
sC.callerCount = i
return &sC
}
func (s *loggerService) Init(ctx context.Context) error {
s.ctx = ctx
s.logger = logrus.New()
s.logger.SetFormatter(&logrus.JSONFormatter{
TimestampFormat: "2006-01-02 15:04:05.000",
FieldMap: logrus.FieldMap{
logrus.FieldKeyTime: "time",
logrus.FieldKeyMsg: "text",
},
})
s.logger.SetOutput(os.Stdout)
if s.defaultFields == nil {
s.WithDefaultFields(func(ctx context.Context, fields *map[string]interface{}) {
f := *fields
f["cid"] = ctxs.GetCidFromContext(ctx)
f["service"] = s.ServiceManager().Environment().Service()
f["version"] = s.ServiceManager().Environment().Version()
fields = &f
})
}
return nil
}
func (s *loggerService) Close() error {
return nil
}
func (s *loggerService) WithServiceManager(c services.ServiceManager) services.Logger {
s.serviceManager = c
return s
}
func (s *loggerService) ServiceManager() services.ServiceManager {
return s.serviceManager
}
func (s *loggerService) output(ctx context.Context, fields ...map[string]interface{}) *logrus.Entry {
f := make(map[string]interface{}, 0)
if s.defaultFields != nil {
s.defaultFields(ctx, &f)
}
for _, ff := range fields {
for k, v := range ff {
f[k] = v
}
}
stack := ""
pc, _, line, ok := runtime.Caller(s.callerCount)
if ok {
stack = fmt.Sprintf("%s:%d", runtime.FuncForPC(pc).Name(), line)
}
f["caller"] = stack
return s.logger.WithFields(f)
}
func (s *loggerService) Info(ctx context.Context, message string, fields ...map[string]interface{}) {
s.output(ctx, fields...).Info(message)
}
func (s *loggerService) Warn(ctx context.Context, message string, fields ...map[string]interface{}) {
s.output(ctx, fields...).Warn(message)
}
func (s *loggerService) Error(ctx context.Context, message string, fields ...map[string]interface{}) {
s.output(ctx, fields...).Error(message)
}
func (s *loggerService) Fatal(ctx context.Context, message string, fields ...map[string]interface{}) {
s.output(ctx, fields...).Fatal(message)
}