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bunyan-decorator

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bunyan-decorator

**bunyan-decorator** enables you to log the result of functions that return a promise or a value.

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#bunyan-decorator

bunyan-decorator enables you to log the result of functions that return a promise or a value.

Install

npm install bunyan-decorator

Usage

const bunyan = require('bunyan');
const bunyand = require ('./bunyan-decorator');

const l = new Logger(bunyan.createLogger({
  name: 'my-app'
}));

const log = l.log;

class MyClass {

  // Decorator your class method to log it
  @log(Level.info)
  searchById(id) {
    return MySearchService.byId(id);
  }
}

Extractors

Extractors enable you to modify the result logged by the bunyan decorator

class MyClass {

  // This extractor will transform the result nil, thus not return value is logged
  @log(Level.info, { extractor: result => {} })
  searchById(id) {
    return MySearchService.byId(id);
  }
}

Example log record

Note all log records include all default bunyan property as well as the class name, the class method, the elapsed time, and the result (unless an extractor is used).

Pretty
02:12:41.894Z  INFO my-app: SchoolsService.all(...) (module=SchoolsService, method=all(...), elapsedTime=428.553181)
    result: [
      {
        "id": "sampleschoolid1",
        "location": {
          "geo": {
            "lat": -1,
            "lon": -1
          },
          "address": {
            "street": "10 street rd",
            "city": "littleton",
            "state": "ma",
            "zip": "01146"
          }
        },
        "type": "school",
        "name": "sampleschoolid1",
        "district": {
          "id": "district-1",
          "name": "District One",
          "type": "district"
        },
        "group": {
          "name": "School Group One"
        },
        "created": "2017-02-16T13:36:01.781Z"
      }
    ]
Raw
"name":"my-app","hostname":"Carmines-MacBook-Pro-7.local","pid":58820,"level":30,"module":"ExpressServer","method":"listen","msg":"up
 and running in development @: Carmines-MacBook-Pro-7.local on port: 3003}","time":"2017-02-24T02:15:38.065Z","v":0}
{"name":"ecl-registration","hostname":"Carmines-MacBook-Pro-7.local","pid":58820,"level":30,"module":"SchoolsService","method":"all(...)","elaps
edTime":404.09158199999996,"result":[{"id":"sampleschoolid1","location":{"geo":{"lat":-1,"lon":-1},"address":{"street":"10 street rd","city":"li
ttleton","state":"ma","zip":"01146"}},"type":"school","name":"sampleschoolid1","district":{"id":"district-1","name":"District One","type":"distr
ict"},"group":{"name":"School Group One"},"created":"2017-02-16T13:36:01.781Z"}],"msg":"SchoolsService.all(...)","time":"2017-02-24T02:15:41.487
Z","v":0}
{"name":"ecl-registration","hostname":"Carmines-MacBook-Pro-7.local","pid":58820,"level":30,"module":"Controller","method":"all(...)","elapsedTi
me":410.745346,"msg":"Controller.all(...)","time":"2017-02-24T02:15:41.494Z","v":0}

License

MIT

Keywords

FAQs

Package last updated on 13 Mar 2017

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