| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You 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 log |
| |
| import ( |
| "go.uber.org/zap/zapcore" |
| ) |
| |
| // Option configures how to set up logger. |
| type Option interface { |
| apply(*options) |
| } |
| |
| type funcOption struct { |
| do func(*options) |
| } |
| |
| func (fo *funcOption) apply(o *options) { |
| fo.do(o) |
| } |
| |
| type options struct { |
| writeSyncer zapcore.WriteSyncer |
| outputFile string |
| logLevel string |
| } |
| |
| // WithLogLevel sets the log level. |
| func WithLogLevel(level string) Option { |
| return &funcOption{ |
| do: func(o *options) { |
| o.logLevel = level |
| }, |
| } |
| } |
| |
| // WithOutputFile sets the output file path. |
| func WithOutputFile(file string) Option { |
| return &funcOption{ |
| do: func(o *options) { |
| o.outputFile = file |
| }, |
| } |
| } |
| |
| // WithWriteSyncer is a low level API which sets the underlying |
| // WriteSyncer by providing a zapcore.WriterSyncer, |
| // which has high priority than WithOutputFile. |
| func WithWriteSyncer(ws zapcore.WriteSyncer) Option { |
| return &funcOption{ |
| do: func(o *options) { |
| o.writeSyncer = ws |
| }, |
| } |
| } |