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logger.go 3.18 KB
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Trevor Pounds 提交于 2015-09-20 13:45 . Update Godeps to aws-sdk-go v0.9.9.
package aws
import (
"log"
"os"
)
// A LogLevelType defines the level logging should be performed at. Used to instruct
// the SDK which statements should be logged.
type LogLevelType uint
// LogLevel returns the pointer to a LogLevel. Should be used to workaround
// not being able to take the address of a non-composite literal.
func LogLevel(l LogLevelType) *LogLevelType {
return &l
}
// Value returns the LogLevel value or the default value LogOff if the LogLevel
// is nil. Safe to use on nil value LogLevelTypes.
func (l *LogLevelType) Value() LogLevelType {
if l != nil {
return *l
}
return LogOff
}
// Matches returns true if the v LogLevel is enabled by this LogLevel. Should be
// used with logging sub levels. Is safe to use on nil value LogLevelTypes. If
// LogLevel is nill, will default to LogOff comparison.
func (l *LogLevelType) Matches(v LogLevelType) bool {
c := l.Value()
return c&v == v
}
// AtLeast returns true if this LogLevel is at least high enough to satisfies v.
// Is safe to use on nil value LogLevelTypes. If LogLevel is nill, will default
// to LogOff comparison.
func (l *LogLevelType) AtLeast(v LogLevelType) bool {
c := l.Value()
return c >= v
}
const (
// LogOff states that no logging should be performed by the SDK. This is the
// default state of the SDK, and should be use to disable all logging.
LogOff LogLevelType = iota * 0x1000
// LogDebug state that debug output should be logged by the SDK. This should
// be used to inspect request made and responses received.
LogDebug
)
// Debug Logging Sub Levels
const (
// LogDebugWithSigning states that the SDK should log request signing and
// presigning events. This should be used to log the signing details of
// requests for debugging. Will also enable LogDebug.
LogDebugWithSigning LogLevelType = LogDebug | (1 << iota)
// LogDebugWithHTTPBody states the SDK should log HTTP request and response
// HTTP bodys in addition to the headers and path. This should be used to
// see the body content of requests and responses made while using the SDK
// Will also enable LogDebug.
LogDebugWithHTTPBody
// LogDebugWithRequestRetries states the SDK should log when service requests will
// be retried. This should be used to log when you want to log when service
// requests are being retried. Will also enable LogDebug.
LogDebugWithRequestRetries
// LogDebugWithRequestErrors states the SDK should log when service requests fail
// to build, send, validate, or unmarshal.
LogDebugWithRequestErrors
)
// A Logger is a minimalistic interface for the SDK to log messages to. Should
// be used to provide custom logging writers for the SDK to use.
type Logger interface {
Log(...interface{})
}
// NewDefaultLogger returns a Logger which will write log messages to stdout, and
// use same formatting runes as the stdlib log.Logger
func NewDefaultLogger() Logger {
return &defaultLogger{
logger: log.New(os.Stdout, "", log.LstdFlags),
}
}
// A defaultLogger provides a minimalistic logger satisfying the Logger interface.
type defaultLogger struct {
logger *log.Logger
}
// Log logs the parameters to the stdlib logger. See log.Println.
func (l defaultLogger) Log(args ...interface{}) {
l.logger.Println(args...)
}
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