The go-logger project came to facilitate and increase your project's log customization capacity, being the most complete from the market. Below are functions to use:
- Log Level (Info, Debug, Warn, Error)
- Different message modes (Default or Json)
- Information mask for all types
- Information hide for all types
- Mask customization (Mask start or Mask end)
- Print log asynchronously
- Customization globally or locally
- Date and time format customization
- Have the option to print only the message has content
- Simplicity in calls
Use go get.
go get github.com/GabrielHCataldo/go-logger
Then import the go-logger package into your own code.
import "github.com/GabrielHCataldo/go-logger/logger"IMPORTANT: Always check the documentation in the structures and functions fields. For more details on the examples, visit All examples link
Using go-logger's features is very easy, let's start with a basic example:
import "github.com/GabrielHCataldo/go-logger/logger"
func main() {
basicMsg := getBasicMsg()
logger.Info(basicMsg...)
logger.Debug(basicMsg...)
logger.Warn(basicMsg...)
logger.Error(basicMsg...)
}
func getBasicMsg() []any {
return []any{"basic example with empty any values", nil, "", 0, map[string]any{}, []any{}}
}Outputs:
[INFO 2023/12/10 17:23:09] main.go:5: basic example with empty any values 0 {} null
[DEBUG 2023/12/10 17:23:09] main.go:6: basic example with empty any values 0 {} null
[WARN 2023/12/10 17:23:09] main.go:7: basic example with empty any values 0 {} null
[ERROR 2023/12/10 17:23:09] main.go:8: basic example with empty any values 0 {} null
We can modify this default structure to a JSON log structure, just edit its global options like below:
import "github.com/GabrielHCataldo/go-logger/logger"
func main() {
// set on global options
logger.SetOptions(&logger.Options{
// Out represents an io.Writer that is used for the logging output.
Out: os.Stdout,
// Level field represents the logging level. It is of type `level`.
Level: logger.WarnLevel,
// Print mode (default: ModeDefault)
Mode: logger.ModeJson,
// Argument date format (default: DateFormatFull24h)
DateFormat: logger.DateFormatFull24h,
// Custom prefix text
CustomPrefixText: "",
// Custom after prefix text (only if Mode is ModeDefault)
CustomAfterPrefixText: "",
// Enable asynchronous printing mode (default: false)
EnableAsynchronousMode: false,
// Enable argument date to be UTC (default: false)
UTC: false,
// Enable to not print empty message (default: false)
DontPrintEmptyMessage: false,
// Enable to remove spaces between parameters (default: false)
RemoveSpace: false,
// If true will hide all datetime and prefix arguments (default: false)
HideAllArgs: false,
// If true it will hide the datetime arguments (default: false)
HideArgDatetime: false,
// If true, it will hide the caller arguments (default: false)
HideArgCaller: false,
// If true, it will disable all argument and prefix colors (default: false)
DisablePrefixColors: false,
// If true, json mode msg field becomes slice (default: false, only if Mode is ModeJson)
//
// IMPORTANT: If true, the format parameter will not work
EnableJsonMsgFieldForSlice: false,
})
basicMsg := getBasicMsg()
logger.Info(basicMsg...)
logger.Debug(basicMsg...)
logger.Warn(basicMsg...)
logger.Error(basicMsg...)
}
func getBasicMsg() []any {
return []any{"basic example with empty any values", nil, "", 0, map[string]any{}, []any{}}
}Outputs:
{"level":"warn","datetime":"2023/12/10 17:18:09","file":"main.go","func":"main.main","line":"11","msg":"basic example with empty any values 0 {} null"}
{"level":"error","datetime":"2023/12/10 17:18:09","file":"main.go","func":"main.main","line":"12","msg":"basic example with empty any values 0 {} null"}
You can also pass custom options as a parameter so as not to impact the defined global settings, just use the functions with the Opts pattern, see:
import "github.com/GabrielHCataldo/go-logger/logger"
func main() {
opts := logger.Options{
// Print mode (default: ModeDefault)
Mode: logger.ModeJson,
// Argument date format (default: DateFormatFull24h)
DateFormat: logger.DateFormatFull24h,
// Custom prefix text
CustomPrefixText: "",
// Custom after prefix text (only if Mode is ModeDefault)
CustomAfterPrefixText: "",
// Enable asynchronous printing mode (default: false)
EnableAsynchronousMode: false,
// Enable argument date to be UTC (default: false)
UTC: false,
// Enable to not print empty message (default: false)
DontPrintEmptyMessage: false,
// Enable to remove spaces between parameters (default: false)
RemoveSpace: false,
// If true will hide all datetime and prefix arguments (default: false)
HideAllArgs: false,
// If true it will hide the datetime arguments (default: false)
HideArgDatetime: false,
// If true, it will hide the caller arguments (default: false)
HideArgCaller: false,
// If true, it will disable all argument and prefix colors (default: false)
DisablePrefixColors: false,
// If true, json mode msg field becomes slice (default: false, only if Mode is ModeJson)
//
// IMPORTANT: If true, the format parameter will not work
EnableJsonMsgFieldForSlice: false,
}
basicMsg := getBasicMsg()
logger.InfoOpts(opts, basicMsg...)
// field msg json to slice
opts.EnableJsonMsgFieldForSlice = true
logger.DebugOpts(opts, basicMsg...)
logger.Warn(basicMsg...)
logger.Error(basicMsg...)
}
func getBasicMsg() []any {
return []any{"basic example with empty any values", nil, "", 0, map[string]any{}, []any{}}
}Outputs:
{"level":"info","datetime":"2023/12/11 08:17:09","file":"main.go","func":"main.main","line":"50","msg":"basic example with any values text string 1 12.213 true 2023-12-11T08:17:14-03:00 {\"int\":1,\"float\":12.213,\"string\":\"text string\",\"bool\":true,\"time\":\"2023-12-11T08:17:14-03:00\",\"nilValue\":null} [\"text string\",1,12.213,true,null,\"2023-12-11T08:17:14-03:00\"]"}
{"level":"debug","datetime":"2023/12/11 08:17:09","file":"main.go","func":"main.main","line":"53","msg":["basic example with any values","text string",1,12.213,true,"2023-12-11T08:17:14-03:00",{"bool":true,"float":12.213,"int":1,"nilValue":null,"string":"text string","time":"2023-12-11T08:17:14-03:00"},["text string",1,12.213,true,null,"2023-12-11T08:17:14-03:00"]]}
[WARN 2023/12/11 08:17:09] main.go:54: basic example with any values text string 1 12.213 true 2023-12-11T08:17:14-03:00 {"float":12.213,"string":"text string","bool":true,"time":"2023-12-11T08:17:14-03:00","nilValue":null,"int":1} ["text string",1,12.213,true,null,"2023-12-11T08:17:14-03:00"]
[ERROR 2023/12/11 08:17:09] main.go:55: basic example with any values text string 1 12.213 true 2023-12-11T08:17:14-03:00 {"time":"2023-12-11T08:17:14-03:00","nilValue":null,"int":1,"float":12.213,"string":"text string","bool":true} ["text string",1,12.213,true,null,"2023-12-11T08:17:14-03:00"]
In go-logger we have the same format pattern as a parameter in some native functions, This value formats the parameters passed in v, works both in standard mode and in default mode. JSON, just call the functions with the f pattern, see some examples below:
import "github.com/GabrielHCataldo/go-logger/logger"
func main() {
customOpts := logger.Options{
// Print mode (default: ModeDefault)
Mode: logger.ModeJson,
// Argument date format (default: DateFormatFull24h)
DateFormat: logger.DateFormatAbbrTextDatetime12h,
// Custom prefix text
CustomPrefixText: "",
// Custom after prefix text (only if Mode is ModeDefault)
CustomAfterPrefixText: "",
// Enable asynchronous printing mode (default: false)
EnableAsynchronousMode: false,
// Enable argument date to be UTC (default: false)
UTC: false,
// Enable to not print empty message (default: false)
DontPrintEmptyMessage: false,
// Enable to remove spaces between parameters (default: false)
RemoveSpace: false,
// If true will hide all datetime and prefix arguments (default: false)
HideAllArgs: false,
// If true it will hide the datetime arguments (default: false)
HideArgDatetime: false,
// If true, it will hide the caller arguments (default: false)
HideArgCaller: false,
// If true, it will disable all argument and prefix colors (default: false)
DisablePrefixColors: false,
// If true, json mode msg field becomes slice (default: false, only if Mode is ModeJson)
//
// IMPORTANT: If true, the format parameter will not work
EnableJsonMsgFieldForSlice: false,
}
format := "%v, %v, %v, %v, %v, %v, %v, last is %v"
msg := getBasicMsg()
logger.Infof(format, msg...)
logger.DebugOptsf(format, customOpts, msg...)
logger.WarnfMS(format, msg...)
logger.ErrorOptsfMS(format, customOpts, msg...)
}
func getBasicMsg() []any {
s := []any{
"text string",
1,
12.213,
true,
nil,
time.Now(),
}
m := map[string]any{
"int": 1,
"float": 12.213,
"string": "text string",
"bool": true,
"nilValue": nil,
"time": time.Now(),
}
return []any{"basic example with any values", "text string", 1, 12.213, true, time.Now(), m, s}
}Outputs:
[INFO 2023/12/11 07:53:09] main.go:9: basic example with any values, text string, 1, 12.213, true, 2023-12-11T07:53:41-03:00, {"nilValue":null,"int":1,"float":12.213,"string":"text string","bool":true,"time":"2023-12-11T07:53:41-03:00"}, last is ["text string",1,12.213,true,null,"2023-12-11T07:53:41-03:00"]
{"level":"debug","datetime":"Dec 11 Mon 7:53:41 AM","file":"types.go","func":"main.main","line":"10","msg":"*****************************, ***********, *, ******, ****, *************************, {\"time\":\"*************************\",\"nilValue\":null,\"int\":\"*\",\"float\":\"******\",\"string\":\"***********\",\"bool\":\"****\"}, last is [\"***********\",\"*\",\"******\",\"****\",null,\"*************************\"]"}
[WARN 2023/12/11 07:53:09] main.go:11: **************with any values, *****string, *, ***213, **ue, ************7:53:41-03:00, {"nilValue":null,"int":"*","float":"***213","string":"*****string","bool":"**ue","time":"************7:53:41-03:00"}, last is ["*****string","*","***213","**ue",null,"************7:53:41-03:00"]
{"level":"error","datetime":"Dec 11 Mon 7:53:41 AM","file":"types.go","func":"main.main","line":"12","msg":"**************with any values, *****string, *, ***213, **ue, ************7:53:41-03:00, {\"float\":\"***213\",\"string\":\"*****string\",\"bool\":\"**ue\",\"time\":\"************7:53:41-03:00\",\"nilValue\":null,\"int\":\"*\"}, last is [\"*****string\",\"*\",\"***213\",\"**ue\",null,\"************7:53:41-03:00\"]"}
For a clearer debug, we have in our argument the caller's name and line, to be more precise in some cases sub calls, for example, you can call functions with the SkipCaller pattern and pass the number you want as a parameter to skip the caller, see an example below:
import "github.com/GabrielHCataldo/go-logger/logger"
func main() {
subFunc()
}
func subFunc() {
customOpts := logger.Options{
// Print mode (default: ModeDefault)
Mode: logger.ModeJson,
// Argument date format (default: DateFormatFull24h)
DateFormat: logger.DateFormatAbbrTextDatetime12h,
// Custom prefix text
CustomPrefixText: "",
// Custom after prefix text (only if Mode is ModeDefault)
CustomAfterPrefixText: "",
// Enable asynchronous printing mode (default: false)
EnableAsynchronousMode: false,
// Enable argument date to be UTC (default: false)
UTC: false,
// Enable to not print empty message (default: false)
DontPrintEmptyMessage: false,
// Enable to remove spaces between parameters (default: false)
RemoveSpace: false,
// If true will hide all datetime and prefix arguments (default: false)
HideAllArgs: false,
// If true it will hide the datetime arguments (default: false)
HideArgDatetime: false,
// If true, it will hide the caller arguments (default: false)
HideArgCaller: false,
// If true, it will disable all argument and prefix colors (default: false)
DisablePrefixColors: false,
// If true, json mode msg field becomes slice (default: false, only if Mode is ModeJson)
//
// IMPORTANT: If true, the format parameter will not work
EnableJsonMsgFieldForSlice: false,
}
format := "%v, %v, %v, %v, %v, %v, %v, last is %v"
msg := getBasicMsg()
logger.InfoSkipCaller(1, msg...)
logger.DebugSkipCallerOpts(1, customOpts, msg...)
logger.WarnSkipCallerOptsf(format, 2, customOpts, msg...)
logger.ErrorSkipCaller(2, msg...)
}
func getBasicMsg() []any {
s := []any{
"text string",
1,
12.213,
true,
nil,
time.Now(),
}
m := map[string]any{
"int": 1,
"float": 12.213,
"string": "text string",
"bool": true,
"nilValue": nil,
"time": time.Now(),
}
return []any{"basic example with any values", "text string", 1, 12.213, true, time.Now(), m, s}
}Outputs:
[INFO 2023/12/11 08:37:09] main.go:23: basic example with any values text string 1 12.213 true 2023-12-11T08:37:01-03:00 {"nilValue":null,"int":1,"float":12.213,"string":"text string","bool":true,"time":"2023-12-11T08:37:01-03:00"} ["text string",1,12.213,true,null,"2023-12-11T08:37:01-03:00"]
{"level":"debug","datetime":"2023/12/11 8:37:01AM","file":"main.go","func":"main.subFunc","line":"24","msg":"basic example with any values text string 1 12.213 true 2023-12-11T08:37:01-03:00 {\"time\":\"2023-12-11T08:37:01-03:00\",\"nilValue\":null,\"int\":1,\"float\":12.213,\"string\":\"text string\",\"bool\":true} [\"text string\",1,12.213,true,null,\"2023-12-11T08:37:01-03:00\"]"}
{"level":"warn","datetime":"2023/12/11 8:37:01AM","file":"main.go","func":"main.main","line":"4","msg":"basic example with any values, text string, 1, 12.213, true, 2023-12-11T08:37:01-03:00, {\"nilValue\":null,\"int\":1,\"float\":12.213,\"string\":\"text string\",\"bool\":true,\"time\":\"2023-12-11T08:37:01-03:00\"}, last is [\"text string\",1,12.213,true,null,\"2023-12-11T08:37:01-03:00\"]"}
[ERROR 2023/12/11 08:37:09] main.go:4: basic example with any values text string 1 12.213 true 2023-12-11T08:37:01-03:00 {"bool":true,"time":"2023-12-11T08:37:01-03:00","nilValue":null,"int":1,"float":12.213,"string":"text string"} ["text string",1,12.213,true,null,"2023-12-11T08:37:01-03:00"]
We have a complete solution to hide/mask values that works for all types, example Below we will use a structure, where we will add the logger tag with the values hide | mask_start | mask_end indicating how we want the value to be hidden. See the example below:
import "github.com/GabrielHCataldo/go-logger/logger"
type test struct {
Name string `json:"name,omitempty"`
BirthDate time.Time `json:"birthDate,omitempty"`
Document string `json:"document,omitempty" logger:"mask_start"`
Emails []string `json:"emails,omitempty"`
Balances []float32 `json:"balances,omitempty" logger:"mask_end"`
TotalBalances []float64 `json:"totalBalances,omitempty"`
Booleans []bool `json:"booleans,omitempty"`
Bank bankTest `json:"bank,omitempty"`
}
type bankTest struct {
AccountDigits string `json:"accountDigits,omitempty"`
Account string `json:"account,omitempty"`
Balance float32 `json:"balance,omitempty" logger:"hide"`
TotalBalance float64 `json:"totalBalance,omitempty"`
}
func main() {
testStruct := getTestStruct()
msg := []any{"test mask/hide struct:", testStruct}
logger.Info(msg...)
logger.Debug(msg...)
logger.Warn(msg...)
logger.Error(msg...)
}
func getTestStruct() test {
bank := bankTest{
AccountDigits: "123",
Account: "123981023",
Balance: 30.89,
TotalBalance: 200.17,
}
return test{
Name: "Foo Bar",
BirthDate: time.Date(1999, 1, 21, 0, 0, 0, 0, time.Local),
Document: "02104996642",
Emails: []string{"[email protected]", "[email protected]", "[email protected]"},
Balances: []float32{10.88, 11, 13.99, 12391.23, 23321},
Bank: bank,
}
} Outputs:
[INFO 2023/12/11 06:21:09] main.go:20: test mask/hide struct: {"name":"Foo Bar","birthDate":"1999-01-21T00:00:00-02:00","document":"*****996642","emails":["[email protected]","[email protected]","[email protected]"],"balances":["10***","1*","13***","1239****","23***"],"bank":{"account":"123981023","accountDigits":"123","balance":"*****","totalBalance":200.17}}
[DEBUG 2023/12/11 06:21:09] main.go:21: test mask/hide struct: {"name":"Foo Bar","birthDate":"1999-01-21T00:00:00-02:00","document":"*****996642","emails":["[email protected]","[email protected]","[email protected]"],"balances":["10***","1*","13***","1239****","23***"],"bank":{"account":"123981023","accountDigits":"123","balance":"*****","totalBalance":200.17}}
[WARN 2023/12/11 06:21:09] main.go:22: test mask/hide struct: {"name":"Foo Bar","birthDate":"1999-01-21T00:00:00-02:00","document":"*****996642","emails":["[email protected]","[email protected]","[email protected]"],"balances":["10***","1*","13***","1239****","23***"],"bank":{"account":"123981023","accountDigits":"123","balance":"*****","totalBalance":200.17}}
[ERROR 2023/12/11 06:21:09] main.go:23: test mask/hide struct: {"name":"Foo Bar","birthDate":"1999-01-21T00:00:00-02:00","document":"*****996642","emails":["[email protected]","[email protected]","[email protected]"],"balances":["10***","1*","13***","1239****","23***"],"bank":{"account":"123981023","accountDigits":"123","balance":"*****","totalBalance":200.17}}
You can also use functions with the ending H to hide all values, MS to mask half initial half of all values, and ME to mask the trailing half of all values. Look:
import "github.com/GabrielHCataldo/go-logger/logger"
func main() {
// also applies to other levels
msg := getBasicMsg()
logger.Info(msg...)
logger.InfoH(msg...)
logger.InfoMS(msg...)
logger.InfoME(msg...)
}
func getBasicMsg() []any {
s := []any{
"text string",
1,
12.213,
true,
nil,
time.Now(),
}
m := map[string]any{
"int": 1,
"float": 12.213,
"string": "text string",
"bool": true,
"nilValue": nil,
"time": time.Now(),
}
return []any{"basic example with any values", "text string", 1, 12.213, true, time.Now(), m, s}
}Outputs:
[INFO 2023/12/11 07:19:09] main.go:5: basic example with any values text string 1 12.213 true 2023-12-11T07:19:42-03:00 {"string":"text string","bool":true,"time":"2023-12-11T07:19:42-03:00","nilValue":null,"int":1,"float":12.213} ["text string",1,12.213,true,null,"2023-12-11T07:19:42-03:00"]
[INFO 2023/12/11 07:19:09] main.go:6: ***************************** *********** * ****** **** ************************* {"bool":"****","time":"*************************","nilValue":null,"int":"*","float":"******","string":"***********"} ["***********","*","******","****",null,"*************************"]
[INFO 2023/12/11 07:19:09] main.go:7: **************with any values *****string * ***213 **ue ************7:19:42-03:00 {"bool":"**ue","time":"************7:19:42-03:00","nilValue":null,"int":"*","float":"***213","string":"*****string"} ["*****string","*","***213","**ue",null,"************7:19:42-03:00"]
[INFO 2023/12/11 07:19:09] main.go:8: basic example *************** text ****** * 12.*** tr** 2023-12-11T0************* {"time":"2023-12-11T0*************","nilValue":null,"int":"*","float":"12.***","string":"text ******","bool":"tr**"} ["text ******","*","12.***","tr**",null,"2023-12-11T0*************"]
For total customization, you can pass opts as a parameter in functions with default Opts as already mentioned above, and you can also pass it as a global variable by calling the SetOptions function and to reset the global options to default, you can call the function ResetOptionsToDefault see the example below:
import "github.com/GabrielHCataldo/go-logger/logger"
func main() {
logger.SetOptions(getCustomOptionsExample())
msg := getBasicMsg()
format := "%v, %v, %v, %v, %v, %v, %v, last is %v"
logger.Info(msg...)
logger.ResetOptionsToDefault()
logger.Debug(msg...)
logger.WarnSkipCallerOptsf(format, 1, *getCustomOptionsExample(), msg...)
logger.ErrorOptsf(format, *getCustomOptionsExample(), msg...)
}
func getCustomOptionsExample() *logger.Options {
return &logger.Options{
// Print mode (default: ModeDefault)
Mode: logger.RandomMode(),
// Argument date format (default: DateFormatFull24h)
DateFormat: logger.RandomDateFormat(),
// Custom prefix text
CustomPrefixText: "",
// Custom after prefix text (only if Mode is ModeDefault)
CustomAfterPrefixText: "",
// Enable argument date to be UTC (default: false)
UTC: util.RandomBool(),
// Enable to not print empty message (default: false)
DontPrintEmptyMessage: util.RandomBool(),
// Enable to remove spaces between parameters (default: false)
RemoveSpace: util.RandomBool(),
// If true will hide all datetime and prefix arguments (default: false)
HideAllArgs: util.RandomBool(),
// If true it will hide the datetime arguments (default: false)
HideArgDatetime: util.RandomBool(),
// If true, it will hide the caller arguments (default: false)
HideArgCaller: util.RandomBool(),
// If true, it will disable all argument and prefix colors (default: false)
DisablePrefixColors: util.RandomBool(),
// If true, json mode msg field becomes slice (default: false, only if Mode is ModeJson)
//
// IMPORTANT: If true, the format parameter will not work
EnableJsonMsgFieldForSlice: false,
}
}
func getBasicMsg() []any {
s := []any{
"text string",
1,
12.213,
true,
nil,
time.Now(),
}
m := map[string]any{
"int": 1,
"float": 12.213,
"string": "text string",
"bool": true,
"nilValue": nil,
"time": time.Now(),
}
return []any{"basic example with any values", "text string", 1, 12.213, true, time.Now(), m, s}
}Outputs:
INFO: basic example with any valuestext string1 12.213 true2023-12-11T08:59:08-03:00{"time":"2023-12-11T08:59:08-03:00","nilValue":null,"int":1,"float":12.213,"string":"text string","bool":true}["text string",1,12.213,true,null,"2023-12-11T08:59:08-03:00"]
[DEBUG 2023/12/11 08:59:09] types.go:194: basic example with any values text string 1 12.213 true 2023-12-11T08:59:08-03:00 {"bool":true,"time":"2023-12-11T08:59:08-03:00","nilValue":null,"int":1,"float":12.213,"string":"text string"} ["text string",1,12.213,true,null,"2023-12-11T08:59:08-03:00"]
{"level":"warn","msg":"basic example with any values, text string, 1, 12.213, true, 2023-12-11T08:59:08-03:00, {\"nilValue\":null,\"int\":1,\"float\":12.213,\"string\":\"text string\",\"bool\":true,\"time\":\"2023-12-11T08:59:08-03:00\"}, last is [\"text string\",1,12.213,true,null,\"2023-12-11T08:59:08-03:00\"]"}
ERROR: basic example with any values, text string, 1, 12.213, true, 2023-12-11T08:59:08-03:00, {"nilValue":null,"int":1,"float":12.213,"string":"text string","bool":true,"time":"2023-12-11T08:59:08-03:00"}, last is ["text string",1,12.213,true,null,"2023-12-11T08:59:08-03:00"]
Finally, if you want to print messages asynchronously, you can configure your global options or via parameter filling the EnableAsynchronousMode field as true, remembering that the information, file (ex: main.go:23) are not printed in the asynchronous message, see:
import "github.com/GabrielHCataldo/go-logger/logger"
func main() {
asyncOpt := logger.Options{EnableAsynchronousMode: true}
msg := getBasicMsg()
logger.SetOptions(&asyncOpt)
logger.Info(msg...)
logger.ResetOptionsToDefault()
logger.InfoOpts(asyncOpt)
}
func getBasicMsg() []any {
s := []any{
"text string",
1,
12.213,
true,
nil,
time.Now(),
}
m := map[string]any{
"int": 1,
"float": 12.213,
"string": "text string",
"bool": true,
"nilValue": nil,
"time": time.Now(),
}
return []any{"basic example with any values", "text string", 1, 12.213, true, time.Now(), m, s}
}In our go-logger lib we have several calls with all the examples above, always following the standards of nomenclature, let's explain it better:
logger.InfoSkipCallerOptsfH("format", 1, opts, v...)All our calls have this priority layout by default, eliminating them according to your desire in At the moment, the only mandatory name is the level, see:
logger.{level}{SkipCaller}{Opts}{f}-{H/MS/ME}
Example eliminating just SkipCaller:
logger.InfoOptsfH("format", opts, v...)Example eliminating just Opts:
logger.InfoSkipCallerfH("format", 1, v...)Example eliminating only the f (format):
logger.InfoSkipCallerOptsH(1, opts, v...)Example eliminating only H/MS/ME (masks):
logger.InfoSkipCallerOpts("format", 1, opts, v...)Make a pull request, or if you find a bug, open it an Issues.
Distributed under MIT license, see the license file within the code for more details.