forked from project-flogo/core
/
logger.go
210 lines (177 loc) · 4.46 KB
/
logger.go
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package log
import (
"os"
"path/filepath"
"strings"
)
// Constants for log level
const (
TraceLevel Level = iota
DebugLevel
InfoLevel
WarnLevel
ErrorLevel
)
// Constants for log format
const (
FormatConsole Format = iota
FormatJson
)
const (
EnvKeyLogCtx = "FLOGO_LOG_CTX"
EnvKeyLogDateFormat = "FLOGO_LOG_DTFORMAT"
DefaultLogDateFormat = "2006-01-02 15:04:05.000"
EnvKeyLogLevel = "FLOGO_LOG_LEVEL"
DefaultLogLevel = InfoLevel
EnvKeyLogFormat = "FLOGO_LOG_FORMAT"
DefaultLogFormat = FormatConsole
EnvKeyLogSeparator = "FLOGO_LOG_SEPARATOR"
DefaultLogSeparator = "\t"
)
type Level int
type Format int
type Logger interface {
DebugEnabled() bool
TraceEnabled() bool
Trace(args ...interface{})
Debug(args ...interface{})
Info(args ...interface{})
Warn(args ...interface{})
Error(args ...interface{})
Tracef(template string, args ...interface{})
Debugf(template string, args ...interface{})
Infof(template string, args ...interface{})
Warnf(template string, args ...interface{})
Errorf(template string, args ...interface{})
Structured() StructuredLogger
}
type StructuredLogger interface {
Debug(msg string, fields ...Field)
Info(msg string, fields ...Field)
Warn(msg string, fields ...Field)
Error(msg string, fields ...Field)
}
type Field = interface{}
var (
rootLogger Logger
ctxLogging bool
)
func init() {
configureLogging()
}
func CtxLoggingEnabled() bool {
return ctxLogging
}
func RootLogger() Logger {
return rootLogger
}
func SetLogLevel(logger Logger, level Level) {
setZapLogLevel(logger, level)
}
func ChildLogger(logger Logger, name string) Logger {
childLogger, err := newZapChildLogger(logger, name)
if err != nil {
rootLogger.Warnf("unable to create child logger named: %s - %s", name, err.Error())
childLogger = logger
}
return childLogger
}
func ChildLoggerWithFields(logger Logger, fields ...Field) Logger {
childLogger, err := newZapChildLoggerWithFields(logger, fields...)
if err != nil {
rootLogger.Warnf("unable to create child logger with fields: %s", err.Error())
childLogger = logger
}
return childLogger
}
func CreateLoggerFromRef(logger Logger, contributionType, ref string) Logger {
ref = strings.TrimSpace(ref)
if strings.HasSuffix(ref, "/") {
ref = ref[:len(ref)-1]
}
dirs := strings.Split(ref, "/")
if len(dirs) >= 3 {
name := dirs[len(dirs)-1]
acType := dirs[len(dirs)-2]
if acType == "activity" || acType == "trigger" || acType == "connector" {
categoryName := dirs[len(dirs)-3]
return ChildLogger(logger, strings.ToLower(categoryName+"."+acType+"."+name))
} else {
return ChildLogger(logger, strings.ToLower(acType+"."+contributionType+"."+name))
}
} else {
return ChildLogger(logger, strings.ToLower(contributionType+"."+filepath.Base(ref)))
}
}
// NewLogger will create a new zap logger with same log format as engine logger
func NewLogger(name string) Logger {
logFormat := DefaultLogFormat
envLogFormat := strings.ToUpper(os.Getenv(EnvKeyLogFormat))
if envLogFormat == "JSON" {
logFormat = FormatJson
}
zl, lvl, _ := newZapLogger(logFormat, DefaultLogLevel)
if name == "" {
name = "flogo.custom"
}
return &zapLoggerImpl{loggerLevel: lvl, mainLogger: zl.Named(name).Sugar()}
}
func Sync() {
zapSync(rootLogger)
}
var traceEnabled = false
func configureLogging() {
envLogCtx := os.Getenv(EnvKeyLogCtx)
if strings.ToLower(envLogCtx) == "true" {
ctxLogging = true
}
rootLogLevel := DefaultLogLevel
envLogLevel := strings.ToUpper(os.Getenv(EnvKeyLogLevel))
switch envLogLevel {
case "TRACE":
rootLogLevel = DebugLevel
traceEnabled = true
case "DEBUG":
rootLogLevel = DebugLevel
case "INFO":
rootLogLevel = InfoLevel
case "WARN":
rootLogLevel = WarnLevel
case "ERROR":
rootLogLevel = ErrorLevel
default:
rootLogLevel = DefaultLogLevel
}
logFormat := DefaultLogFormat
envLogFormat := strings.ToUpper(os.Getenv(EnvKeyLogFormat))
if envLogFormat == "JSON" {
logFormat = FormatJson
}
rootLogger = newZapRootLogger("flogo", logFormat, rootLogLevel)
SetLogLevel(rootLogger, rootLogLevel)
}
func ToLogLevel(lvlStr string) Level {
lvl := DefaultLogLevel
switch strings.ToUpper(lvlStr) {
case "TRACE":
lvl = DebugLevel
case "DEBUG":
lvl = DebugLevel
case "INFO":
lvl = InfoLevel
case "WARN":
lvl = WarnLevel
case "ERROR":
lvl = ErrorLevel
default:
lvl = DefaultLogLevel
}
return lvl
}
func getLogSeparator() string {
v, ok := os.LookupEnv(EnvKeyLogSeparator)
if ok && len(v) > 0 {
return v
}
return DefaultLogSeparator
}