// NewLogSink creates a new *LogSink for GAE
func NewLogSink(format string) *LogSink {
return &LogSink{
formatter: wcg.NewLogRecordFormatter(format),
ctx: nil,
bigquery: nil,
}
}
// NewIOLogSink creates a new *IOLogSink object.
// format string can have following variables.
//
// - $TIMESTAMP : timestamp of a log record
// - $LOGLEVEL : log level
// - $SOURCE_FILE : source file name where a record is produced.
// - $SOURCE_LINE : a line no of source file where a record is produced.
// - $GOROUTINE : Goroutine ID
// - $SESSSION_ID : Session ID
// - $REQUEST_ID : Request ID
// - $USER_ID : User ID
// - $TEXT : text message produced by app.
//
// and if it is "", "[$GOROUTINE:$USER_ID:$SESSION_ID:$REQUEST_ID] $TEXT ($SOURCE_FILE#$SOURCE_LINE)" is used.
func NewIOLogSink(format string, writer io.Writer, useColor bool) *IOLogSink {
return &IOLogSink{
formatter: wcg.NewLogRecordFormatter(format),
factory: &writerFactory{writer},
color: useColor,
}
}
func newIOLogSinkFromConfig(cfg *logSinkFileConfig) *IOLogSink {
return &IOLogSink{
formatter: wcg.NewLogRecordFormatter(cfg.Format),
factory: cfg.newFactory(),
color: cfg.Color,
stacklevel: cfg.StackLevel,
}
}
func UseStdout() {
stdout := &IOLogSink{}
stdout.formatter = wcg.NewLogRecordFormatter("")
stdout.factory = &writerFactory{os.Stdout}
stdout.color = true
stdout.stacklevel = wcg.LogLevelDebug
wcg.DefaultLogConfig.AddSink(stdout, wcg.LogLevelDebug)
}
// NewLogSinkWithContext creates a new *LogSink for GAE
func NewLogSinkWithContext(format string, ctx context.Context) *LogSink {
var _bq *bigquery.Service
if LogSinkConfig.IsBigQueryEnabled() {
client, err := bq.NewHTTPClient(ctx)
if err == nil {
_bq, _ = bigquery.New(client)
}
}
return &LogSink{
formatter: wcg.NewLogRecordFormatter(format),
ctx: ctx,
bigquery: _bq,
}
}