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44 lines
1.6 KiB
Markdown
44 lines
1.6 KiB
Markdown
# cfg
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[](https://godoc.org/github.com/wiggin77/cfg)
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[](https://travis-ci.org/wiggin77/cfg)
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Go package for app configuration. Supports chained configuration sources for multiple levels of defaults.
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Includes APIs for loading Linux style configuration files (name/value pairs) or INI files, map based properties,
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or easily create new configuration sources (e.g. load from database).
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Supports monitoring configuration sources for changes, hot loading properties, and notifying listeners of changes.
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## Usage
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```Go
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config := &cfg.Config{}
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defer config.Shutdown() // stops monitoring
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// load file via filespec string, os.File
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src, err := Config.NewSrcFileFromFilespec("./myfile.conf")
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if err != nil {
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return err
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}
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// add src to top of chain, meaning first searched
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cfg.PrependSource(src)
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// fetch prop 'retries', default to 3 if not found
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val := config.Int("retries", 3)
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```
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See [example](./example_test.go) for more complete example, including listening for configuration changes.
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Config API parses the following data types:
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| type | method | example property values |
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| ------- | ------ | -------- |
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| string | Config.String | test, "" |
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| int | Config.Int | -1, 77, 0 |
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| int64 | Config.Int64 | -9223372036854775, 372036854775808 |
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| float64 | Config.Float64 | -77.3456, 95642331.1 |
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| bool | Config.Bool | T,t,true,True,1,0,False,false,f,F |
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| time.Duration | Config.Duration | "10ms", "2 hours", "5 min" * |
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\* Units of measure supported: ms, sec, min, hour, day, week, year.
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