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logger.go
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logger.go
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/**
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package realis
type logger interface {
Println(v ...interface{})
Printf(format string, v ...interface{})
Print(v ...interface{})
}
// NoopLogger is a logger that can be attached to the client which will not print anything.
type NoopLogger struct{}
// Printf is a NOOP function here.
func (NoopLogger) Printf(format string, a ...interface{}) {}
// Print is a NOOP function here.
func (NoopLogger) Print(a ...interface{}) {}
// Println is a NOOP function here.
func (NoopLogger) Println(a ...interface{}) {}
// LevelLogger is a logger that can be configured to output different levels of information: Debug and Trace.
// Trace should only be enabled when very in depth information about the sequence of events a function took is needed.
type LevelLogger struct {
logger
debug bool
trace bool
}
// EnableDebug enables debug level logging for the LevelLogger
func (l *LevelLogger) EnableDebug(enable bool) {
l.debug = enable
}
// EnableTrace enables trace level logging for the LevelLogger
func (l *LevelLogger) EnableTrace(enable bool) {
l.trace = enable
}
func (l LevelLogger) debugPrintf(format string, a ...interface{}) {
if l.debug {
l.Printf("[DEBUG] "+format, a...)
}
}
func (l LevelLogger) debugPrint(a ...interface{}) {
if l.debug {
l.Print(append([]interface{}{"[DEBUG] "}, a...)...)
}
}
func (l LevelLogger) debugPrintln(a ...interface{}) {
if l.debug {
l.Println(append([]interface{}{"[DEBUG] "}, a...)...)
}
}
func (l LevelLogger) tracePrintf(format string, a ...interface{}) {
if l.trace {
l.Printf("[TRACE] "+format, a...)
}
}
func (l LevelLogger) tracePrint(a ...interface{}) {
if l.trace {
l.Print(append([]interface{}{"[TRACE] "}, a...)...)
}
}
func (l LevelLogger) tracePrintln(a ...interface{}) {
if l.trace {
l.Println(append([]interface{}{"[TRACE] "}, a...)...)
}
}