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README.md

Logrus Mate :walrus:

Logrus mate is a tool for Logrus, it will help you to initial logger by config, including Formatter, HookLevel and Output .

If you more prefer old version, you could checkout tag v1.0.0

Example

Example 1:

Hijack logrus.StandardLogger()

package main

import (
    "github.com/sirupsen/logrus"
    "github.com/gogap/logrus_mate"
)

func main() {
    logrus_mate.Hijack(
        logrus.StandardLogger(),
        logrus_mate.ConfigString(
            `{formatter.name = "json"}`,
        ),
    )
    
    logrus.WithField("Field", "A").Debugln("Hello JSON")
}

Example 2:

Create new logger from mate:

package main

import (
    "github.com/gogap/logrus_mate"
)

func main() {
    mate, _ := logrus_mate.NewLogrusMate(
        logrus_mate.ConfigString(
            `{ mike {formatter.name = "json"} }`,
        ),
    )
    
    mikeLoger := mate.Logger("mike")
    mikeLoger.Errorln("Hello Error Level from Mike and my formatter is json")
}

Example 3:

Hi jack logger by mate

package main

import (
    "github.com/sirupsen/logrus"
    "github.com/gogap/logrus_mate"
)

func main() {
    mate, _ := logrus_mate.NewLogrusMate(
        logrus_mate.ConfigString(
            `{ mike {formatter.name = "json"} }`,
        ),
    )

    mate.Hijack(
        logrus.StandardLogger(),
        "mike",
    )
    
    logrus.Println("hello std logger is hijack by mike")
}

Example 4:

Fallback the ConfigString

package main

import (
    "github.com/sirupsen/logrus"
    "github.com/gogap/logrus_mate"
)

func main() {
    mate, _ := logrus_mate.NewLogrusMate(
        logrus_mate.ConfigString(
            `{ mike {formatter.name = "json"} }`,
        ),
        logrus_mate.ConfigFile(
            "mate.conf", // { mike {formatter.name = "text"} }
        ),
    )

    mate.Hijack(
        logrus.StandardLogger(),
        "mike",
    )
    
    logrus.Println("hello std logger is hijack by mike")
}

the json formatter is used

Example 5:

Fallback config while hijack

package main

import (
    "github.com/sirupsen/logrus"
    "github.com/gogap/logrus_mate"
)

func main() {
    mate, _ := logrus_mate.NewLogrusMate(
        logrus_mate.ConfigFile(
            "mate.conf", // { mike {formatter.name = "text"} }
        ),
    )

    mate.Hijack(logrus.StandardLogger(),
        "mike",
        logrus_mate.ConfigString(
            `{formatter.name = "json"}`,
        ),
    )

    logrus.Errorln("hello std logger is hijack by mike")
}

the json formatter is used

currently we are using https://github.com/go-akka/configuration for logger config, it will more powerful config format for human read, you also could set your own config provider

Hooks

Hook Options
Airbrake project-id api-key env
Syslog network address priority tag
BugSnag api-key
Slackrus url levels channel emoji username
Graylog address facility extra
Mail app-name host port from to username password
File filename max-lines max-size daily max-days rotate level
BearyChat url levels channel user markdown async
LFSHook path-map { error = "logs/error.log" ... }
sls README

When we need use above hooks, we need import these package as follow:

import _ "github.com/gogap/logrus_mate/hooks/syslog"
import _ "github.com/gogap/logrus_mate/hooks/mail"

If you want write your own hook, you just need todo as follow:

package myhook

import (
    "github.com/gogap/logrus_mate"
)

type MyHookConfig struct {
    Address  string
}

func init() {
    logrus_mate.RegisterHook("myhook", NewMyHook)
}

func NewMyHook(config logrus_mate.Configuration) (hook logrus.Hook, err error) {
    conf := MyHookConfig{}
    if config!=nil {
        conf.Address = config.GetString("address")
    }

    // write your hook logic code here

    return
}

Formatters

internal formatters:

Formatter Options Output Example
null
text force-colors disable-colors disable-timestamp full-timestamp timestamp-format disable-sorting DEBU[0000] Hello Default Logrus Mate
json timestamp-format {"level":"info","msg":"Hello, I am A Logger from jack","time":"2015-10-18T21:24:19+08:00"}

3rd formatters:

Formatter Output Example
logstash [Removed]

When we need use 3rd formatter, we need import these package as follow:

import _ "github.com/gogap/logrus_mate/formatters/xxx"

If you want write your own formatter, you just need todo as follow:

package myformatter

import (
    "github.com/gogap/logrus_mate"
)

type MyFormatterConfig struct {
    Address  string `json:"address"`
}

func init() {
    logrus_mate.RegisterFormatter("myformatter", NewMyFormatter)
}

func NewMyFormatter(config logrus_mate.Configuration) (formatter logrus.Formatter, err error) {
    conf := MyFormatterConfig{}
    if config!=nil {
        conf.Address=config.GetString("address")
    }

    // write your formatter logic code here

    return
}

Writers

internal writers (output):

  • stdout
  • stderr
  • null

3rd writers:

Writer Description
redisio just for demo, it will output into redis, the key type is list
rotatelogs write log to file , configs: clock location link-name rotation-time max-age

When we need use 3rd writer, we need import these package as follow:

import _ "github.com/gogap/logrus_mate/writers/redisio"

If you want write your own writer, you just need todo as follow:

package mywriter

import (
    "io"

    "github.com/gogap/logrus_mate"
)

type MyWriterConfig struct {
    Address  string `json:"address"`
}

func init() {
    logrus_mate.RegisterWriter("mywriter", NewMyWriter)
}

func NewMyWriter(config logrus_mate.Configuration) (writer io.Writer, err error) {
    conf := MyWriterConfig{}
    if config!=nil {
        conf.Address=config.GetString("address")
    }

    // write your writer logic code here

    return
}

Config Provider

The default config provider is HOCON, you could use your own config provider, just implement the following interface{}

type ConfigurationProvider interface {
    LoadConfig(filename string) Configuration
    ParseString(cfgStr string) Configuration
}

type Configuration interface {
    GetBoolean(path string, defaultVal ...bool) bool
    GetByteSize(path string) *big.Int
    GetInt32(path string, defaultVal ...int32) int32
    GetInt64(path string, defaultVal ...int64) int64
    GetString(path string, defaultVal ...string) string
    GetFloat32(path string, defaultVal ...float32) float32
    GetFloat64(path string, defaultVal ...float64) float64
    GetTimeDuration(path string, defaultVal ...time.Duration) time.Duration
    GetTimeDurationInfiniteNotAllowed(path string, defaultVal ...time.Duration) time.Duration
    GetBooleanList(path string) []bool
    GetFloat32List(path string) []float32
    GetFloat64List(path string) []float64
    GetInt32List(path string) []int32
    GetInt64List(path string) []int64
    GetByteList(path string) []byte
    GetStringList(path string) []string
    GetConfig(path string) Configuration
    WithFallback(fallback Configuration)
    HasPath(path string) bool
    Keys() []string
}

set your own config provider

package main

import (
    "github.com/gogap/config"
    "github.com/gogap/logrus_mate"
    "github.com/sirupsen/logrus"
)

func main() {
    mate, _ := logrus_mate.NewLogrusMate(
        logrus_mate.ConfigString(
            `{ mike {formatter.name = "json"} }`,
        ),
        logrus_mate.ConfigFile(
            "mate.conf", // { mike {formatter.name = "text"} }
        ),
        logrus_mate.ConfigProvider(
            &config.HOCONConfigProvider{}, // this is defualt provider if you did not configurate
        ),
    )

    mate.Hijack(
        logrus.StandardLogger(),
        "mike",
    )

    logrus.Println("hello std logger is hijack by mike")
}
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