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gitea/vendor/go.uber.org/zap/options.go
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Go
Vendored

// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"fmt"
"go.uber.org/zap/zapcore"
)
// An Option configures a Logger.
type Option interface {
apply(*Logger)
}
// optionFunc wraps a func so it satisfies the Option interface.
type optionFunc func(*Logger)
func (f optionFunc) apply(log *Logger) {
f(log)
}
// WrapCore wraps or replaces the Logger's underlying zapcore.Core.
func WrapCore(f func(zapcore.Core) zapcore.Core) Option {
return optionFunc(func(log *Logger) {
log.core = f(log.core)
})
}
// Hooks registers functions which will be called each time the Logger writes
// out an Entry. Repeated use of Hooks is additive.
//
// Hooks are useful for simple side effects, like capturing metrics for the
// number of emitted logs. More complex side effects, including anything that
// requires access to the Entry's structured fields, should be implemented as
// a zapcore.Core instead. See zapcore.RegisterHooks for details.
func Hooks(hooks ...func(zapcore.Entry) error) Option {
return optionFunc(func(log *Logger) {
log.core = zapcore.RegisterHooks(log.core, hooks...)
})
}
// Fields adds fields to the Logger.
func Fields(fs ...Field) Option {
return optionFunc(func(log *Logger) {
log.core = log.core.With(fs)
})
}
// ErrorOutput sets the destination for errors generated by the Logger. Note
// that this option only affects internal errors; for sample code that sends
// error-level logs to a different location from info- and debug-level logs,
// see the package-level AdvancedConfiguration example.
//
// The supplied WriteSyncer must be safe for concurrent use. The Open and
// zapcore.Lock functions are the simplest ways to protect files with a mutex.
func ErrorOutput(w zapcore.WriteSyncer) Option {
return optionFunc(func(log *Logger) {
log.errorOutput = w
})
}
// Development puts the logger in development mode, which makes DPanic-level
// logs panic instead of simply logging an error.
func Development() Option {
return optionFunc(func(log *Logger) {
log.development = true
})
}
// AddCaller configures the Logger to annotate each message with the filename,
// line number, and function name of zap's caller. See also WithCaller.
func AddCaller() Option {
return WithCaller(true)
}
// WithCaller configures the Logger to annotate each message with the filename,
// line number, and function name of zap's caller, or not, depending on the
// value of enabled. This is a generalized form of AddCaller.
func WithCaller(enabled bool) Option {
return optionFunc(func(log *Logger) {
log.addCaller = enabled
})
}
// AddCallerSkip increases the number of callers skipped by caller annotation
// (as enabled by the AddCaller option). When building wrappers around the
// Logger and SugaredLogger, supplying this Option prevents zap from always
// reporting the wrapper code as the caller.
func AddCallerSkip(skip int) Option {
return optionFunc(func(log *Logger) {
log.callerSkip += skip
})
}
// AddStacktrace configures the Logger to record a stack trace for all messages at
// or above a given level.
func AddStacktrace(lvl zapcore.LevelEnabler) Option {
return optionFunc(func(log *Logger) {
log.addStack = lvl
})
}
// IncreaseLevel increase the level of the logger. It has no effect if
// the passed in level tries to decrease the level of the logger.
func IncreaseLevel(lvl zapcore.LevelEnabler) Option {
return optionFunc(func(log *Logger) {
core, err := zapcore.NewIncreaseLevelCore(log.core, lvl)
if err != nil {
fmt.Fprintf(log.errorOutput, "failed to IncreaseLevel: %v\n", err)
} else {
log.core = core
}
})
}
// OnFatal sets the action to take on fatal logs.
func OnFatal(action zapcore.CheckWriteAction) Option {
return optionFunc(func(log *Logger) {
log.onFatal = action
})
}
// WithClock specifies the clock used by the logger to determine the current
// time for logged entries. Defaults to the system clock with time.Now.
func WithClock(clock zapcore.Clock) Option {
return optionFunc(func(log *Logger) {
log.clock = clock
})
}