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flags.go
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flags.go
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package config
import "flag"
// DefaultConfigLocation is the default filepath for JSON config files.
const DefaultConfigLocation = "/opt/nyt/etc/conf.json"
// SetLogOverride will check `*LogCLI` for any values
// and override the given string pointer if LogCLI is set.
// If LogCLI is set to "dev", the given log var will be set to "".
func SetLogOverride(log *string) {
// LogCLI is a pointer to the value of the '-log' command line flag. It is meant to declare
// an application logging location.
logCLI := flag.String("log", "", "Application log location")
flag.Parse()
// if a user passes in 'dev' log flag, override the
// App log to signal for stderr logging.
if *logCLI != "" {
*log = *logCLI
if *logCLI == "dev" {
*log = ""
}
}
}
// SetFlagOverrides will add and check a `log` and `config` CLI flag to the
// current process, call flag.Parse() and will overwrite the passed in string
// pointer if the flag exists.
func SetFlagOverrides(log *string, config *string) {
// create the flag
cfg := flag.String("config", "", "Application log location")
SetLogOverride(log)
// if a user passes in 'dev' log flag, override the
// App log to signal for stderr logging.
if *cfg != "" {
*config = *cfg
}
}