Documentation
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Overview ¶
Package plog implements a thin layer over klog to help enforce pinniped's logging convention. Logs are always structured as a constant message with key and value pairs of related metadata.
The logging levels in order of increasing verbosity are: error, warning, info, debug, trace and all.
error and warning logs are always emitted (there is no way for the end user to disable them), and thus should be used sparingly. Ideally, logs at these levels should be actionable.
info should be reserved for "nice to know" information. It should be possible to run a production pinniped server at the info log level with no performance degradation due to high log volume. debug should be used for information targeted at developers and to aid in support cases. Care must be taken at this level to not leak any secrets into the log stream. That is, even though debug may cause performance issues in production, it must not cause security issues in production.
trace should be used to log information related to timing (i.e. the time it took a controller to sync). Just like debug, trace should not leak secrets into the log stream. trace will likely leak information about the current state of the process, but that, along with performance degradation, is expected.
all is reserved for the most verbose and security sensitive information. At this level, full request metadata such as headers and parameters along with the body may be logged. This level is completely unfit for production use both from a performance and security standpoint. Using it is generally an act of desperation to determine why the system is broken.
Index ¶
- func All(msg string, keysAndValues ...interface{})
- func Debug(msg string, keysAndValues ...interface{})
- func DebugErr(msg string, err error, keysAndValues ...interface{})
- func Enabled(level LogLevel) bool
- func Error(msg string, err error, keysAndValues ...interface{})
- func Info(msg string, keysAndValues ...interface{})
- func InfoErr(msg string, err error, keysAndValues ...interface{})
- func KObj(obj klog.KMetadata) string
- func KRef(namespace, name string) string
- func RemoveKlogGlobalFlags()
- func Trace(msg string, keysAndValues ...interface{})
- func TraceErr(msg string, err error, keysAndValues ...interface{})
- func ValidateAndSetLogLevelGlobally(level LogLevel) error
- func Warning(msg string, keysAndValues ...interface{})
- func WarningErr(msg string, err error, keysAndValues ...interface{})
- type LogLevel
- type PLogger
- func (p *PLogger) All(msg string, keysAndValues ...interface{})
- func (p *PLogger) Debug(msg string, keysAndValues ...interface{})
- func (p *PLogger) DebugErr(msg string, err error, keysAndValues ...interface{})
- func (p *PLogger) Error(msg string, err error, keysAndValues ...interface{})
- func (p *PLogger) Info(msg string, keysAndValues ...interface{})
- func (p *PLogger) InfoErr(msg string, err error, keysAndValues ...interface{})
- func (p *PLogger) Trace(msg string, keysAndValues ...interface{})
- func (p *PLogger) TraceErr(msg string, err error, keysAndValues ...interface{})
- func (p *PLogger) Warning(msg string, keysAndValues ...interface{})
- func (p *PLogger) WarningErr(msg string, err error, keysAndValues ...interface{})
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func Enabled ¶ added in v0.5.0
Enabled returns whether the provided plog level is enabled, i.e., whether print statements at the provided level will show up.
func KObj ¶ added in v0.6.0
func KObj(obj klog.KMetadata) string
KObj is (mostly) copied from klog - it is a standard way to represent a metav1.Object in logs.
func KRef ¶ added in v0.6.0
KRef is (mostly) copied from klog - it is a standard way to represent a a metav1.Object in logs when you only have access to the namespace and name of the object.
func RemoveKlogGlobalFlags ¶
func RemoveKlogGlobalFlags()
RemoveKlogGlobalFlags attempts to "remove" flags that get unconditionally added by importing klog.
func WarningErr ¶
Use WarningErr to issue a Warning message with an error object as part of the message.
Types ¶
type LogLevel ¶
type LogLevel string
LogLevel is an enum that controls verbosity of logs. Valid values in order of increasing verbosity are leaving it unset, info, debug, trace and all.
const ( // LevelWarning (i.e. leaving the log level unset) maps to klog log level 0. LevelWarning LogLevel = "" // LevelInfo maps to klog log level 2. LevelInfo LogLevel = "info" // LevelDebug maps to klog log level 4. LevelDebug LogLevel = "debug" // LevelTrace maps to klog log level 6. LevelTrace LogLevel = "trace" // LevelAll maps to klog log level 100 (conceptually it is log level 8). LevelAll LogLevel = "all" )
type PLogger ¶ added in v0.8.0
type PLogger struct {
// contains filtered or unexported fields
}
func (*PLogger) DebugErr ¶ added in v0.8.0
Use DebugErr to issue a Debug message with an error object as part of the message.
func (*PLogger) InfoErr ¶ added in v0.8.0
Use InfoErr to log an expected error, e.g. validation failure of an http parameter.
func (*PLogger) TraceErr ¶ added in v0.8.0
Use TraceErr to issue a Trace message with an error object as part of the message.
func (*PLogger) WarningErr ¶ added in v0.8.0
Use WarningErr to issue a Warning message with an error object as part of the message.
Source Files