github.com/astaxie/beego@v1.12.3/logs/multifile.go (about)

     1  // Copyright 2014 beego Author. All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package logs
    16  
    17  import (
    18  	"encoding/json"
    19  	"time"
    20  )
    21  
    22  // A filesLogWriter manages several fileLogWriter
    23  // filesLogWriter will write logs to the file in json configuration  and write the same level log to correspond file
    24  // means if the file name in configuration is project.log filesLogWriter will create project.error.log/project.debug.log
    25  // and write the error-level logs to project.error.log and write the debug-level logs to project.debug.log
    26  // the rotate attribute also  acts like fileLogWriter
    27  type multiFileLogWriter struct {
    28  	writers       [LevelDebug + 1 + 1]*fileLogWriter // the last one for fullLogWriter
    29  	fullLogWriter *fileLogWriter
    30  	Separate      []string `json:"separate"`
    31  }
    32  
    33  var levelNames = [...]string{"emergency", "alert", "critical", "error", "warning", "notice", "info", "debug"}
    34  
    35  // Init file logger with json config.
    36  // jsonConfig like:
    37  //	{
    38  //	"filename":"logs/beego.log",
    39  //	"maxLines":0,
    40  //	"maxsize":0,
    41  //	"daily":true,
    42  //	"maxDays":15,
    43  //	"rotate":true,
    44  //  	"perm":0600,
    45  //	"separate":["emergency", "alert", "critical", "error", "warning", "notice", "info", "debug"],
    46  //	}
    47  
    48  func (f *multiFileLogWriter) Init(config string) error {
    49  	writer := newFileWriter().(*fileLogWriter)
    50  	err := writer.Init(config)
    51  	if err != nil {
    52  		return err
    53  	}
    54  	f.fullLogWriter = writer
    55  	f.writers[LevelDebug+1] = writer
    56  
    57  	//unmarshal "separate" field to f.Separate
    58  	json.Unmarshal([]byte(config), f)
    59  
    60  	jsonMap := map[string]interface{}{}
    61  	json.Unmarshal([]byte(config), &jsonMap)
    62  
    63  	for i := LevelEmergency; i < LevelDebug+1; i++ {
    64  		for _, v := range f.Separate {
    65  			if v == levelNames[i] {
    66  				jsonMap["filename"] = f.fullLogWriter.fileNameOnly + "." + levelNames[i] + f.fullLogWriter.suffix
    67  				jsonMap["level"] = i
    68  				bs, _ := json.Marshal(jsonMap)
    69  				writer = newFileWriter().(*fileLogWriter)
    70  				err := writer.Init(string(bs))
    71  				if err != nil {
    72  					return err
    73  				}
    74  				f.writers[i] = writer
    75  			}
    76  		}
    77  	}
    78  
    79  	return nil
    80  }
    81  
    82  func (f *multiFileLogWriter) Destroy() {
    83  	for i := 0; i < len(f.writers); i++ {
    84  		if f.writers[i] != nil {
    85  			f.writers[i].Destroy()
    86  		}
    87  	}
    88  }
    89  
    90  func (f *multiFileLogWriter) WriteMsg(when time.Time, msg string, level int) error {
    91  	if f.fullLogWriter != nil {
    92  		f.fullLogWriter.WriteMsg(when, msg, level)
    93  	}
    94  	for i := 0; i < len(f.writers)-1; i++ {
    95  		if f.writers[i] != nil {
    96  			if level == f.writers[i].Level {
    97  				f.writers[i].WriteMsg(when, msg, level)
    98  			}
    99  		}
   100  	}
   101  	return nil
   102  }
   103  
   104  func (f *multiFileLogWriter) Flush() {
   105  	for i := 0; i < len(f.writers); i++ {
   106  		if f.writers[i] != nil {
   107  			f.writers[i].Flush()
   108  		}
   109  	}
   110  }
   111  
   112  // newFilesWriter create a FileLogWriter returning as LoggerInterface.
   113  func newFilesWriter() Logger {
   114  	return &multiFileLogWriter{}
   115  }
   116  
   117  func init() {
   118  	Register(AdapterMultiFile, newFilesWriter)
   119  }