Configer

Configer is an automatic configurator based on Viper and Cobra, supporting automatic or manual binding of environment variables and command line arguments. Configure once, effective everywhere

Priority

Command-line arguments > Environment variables > Configuration files > Default values

Feature

Command-line arguments

Feature	Supported
Auto binding	√
Binding by tag	√
Configurable prefix	√
Configurable tokenizers	√
Usage document	√

Environment variables

Feature	Supported
Auto binding	√
Binding by tag	√
Configurable prefix	√
Configurable delim	√

Files

Feature	Supported
Auto Binding	√
Binding by tag	-
Configurable prefix	×
Configurable delim	×
Multiple Files	√
YAML	√
JSON	√

Default

Feature	Supported
Load default from tag	√

Example

See ./example/main.go

Load from config file

go run . -c config.yaml

See command-line arguments help

go run . --help

Load from command-line arguments

go run . --example.log.level debug

Load from environment variables

EXAMPLE_LOG_LEVEL=trace go run .