pcmt/config/config.go
leo bfafc4a8be
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config: update schema
* couple session-related attrs in a record
* couple logger-pertaining attrs in a record
* update config Go representation
* update Go config consumers
2023-05-05 19:31:43 +02:00

102 lines
2.0 KiB
Go

package config
import (
"context"
"fmt"
"os"
"os/exec"
"time"
"git.dotya.ml/mirre-mt/pcmt/slogging"
"github.com/philandstuff/dhall-golang/v6"
)
type session struct {
CookieName string
CookieSecret string
}
type Config struct {
Host string
Port int
AppName string
LiveMode bool
DevelMode bool
Session session
Registration struct{ Allowed bool }
Logger struct {
Json bool //nolint:revive
Fmt string
}
}
func LoadConfig(conf string, isPath bool) (*Config, error) {
var config Config
var err error
if isPath {
slogging.GetLogger().Debug("config from file")
err = dhall.UnmarshalFile(conf, &config)
} else {
slogging.GetLogger().Debug("config raw from cmdline")
err = dhall.Unmarshal([]byte(conf), &config)
}
if err != nil {
return nil, err
}
if config.DevelMode {
_ = slogging.SetLevel(slogging.LevelDebug)
slogging.GetLogger().Debugf("parsed config: %+v", config)
if dhallCmdExists() {
_ = prettyPrintConfig(conf, isPath)
}
}
return &config, nil
}
func prettyPrintConfig(conf string, isPath bool) error {
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
defer cancel()
var cmd *exec.Cmd
if isPath {
cmd = exec.CommandContext(ctx, "/bin/sh", "-c", "dhall --file "+conf) //nolint:gosec
} else {
cmd = exec.CommandContext(ctx, "/bin/sh", "-c", "dhall <<< \""+conf+"\"") //nolint:gosec
}
output, err := cmd.CombinedOutput()
if err != nil {
slogging.GetLogger().Debug("could not pretty-print config", "error", err)
return err
}
if isPath {
fmt.Fprintln(os.Stderr, "\n"+conf+":\n"+string(output))
} else {
fmt.Fprintln(os.Stderr, "\nconfig:\n"+string(output))
}
return nil
}
func dhallCmdExists() bool {
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
defer cancel()
if err := exec.CommandContext(ctx, "/bin/sh", "-c", "command -v dhall").Run(); err != nil {
slogging.GetLogger().Debug("no command dhall")
return false
}
return true
}