AdGuardHome/internal/confmigrate/yaml.go

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Pull request 1991: AG-25392 confmigrate vol.2 Merge in DNS/adguard-home from AG-25392-confmigrate-vol.2 to master Squashed commit of the following: commit 7bcdf443135523022a7e5ed6b2da05fcd784a896 Merge: 4c25331b5 f84ff2bd0 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 20:33:08 2023 +0300 Merge branch 'master' into AG-25392-confmigrate-vol.2 commit 4c25331b507078670e7f3505384b53179a210292 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 20:14:23 2023 +0300 confmigrate: fix fmt commit d7dbfc46a7f825d248cb028d50b60eede941bf67 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 20:07:25 2023 +0300 confmigrate: imp code commit cd29729a23d1782a0b5fbd1e9153fe61ff3dbc71 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 18:21:14 2023 +0300 confmigrate: imp code, split files commit f075a14c251c68a13152709e14a326ad17c2f889 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 17:19:47 2023 +0300 confmigrate: imp code commit 37335597e7870184528c1d868e2d5bd5525a74bb Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 16:54:13 2023 +0300 confmigrate: imp code, docs commit 1df0ddcad99e5056b4989d17490ca4b44ae17838 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 14:41:52 2023 +0300 all: add testdata commit e62690dbe8e458811bbd6b115b4449affa729560 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Thu Aug 31 16:13:14 2023 +0300 all: imp code commit 0934d5974b31a58b31b12412c3cd1a50810ffc4f Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Aug 30 15:50:52 2023 +0300 home: don't reread config commit 7566ab6f330460bd608aae6dc0428a631e2fa4e3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Aug 30 15:43:57 2023 +0300 all: imp code commit 6f6aae6290f8d3101f3678ecc705eee7030ad8d5 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Aug 30 15:25:46 2023 +0300 all: introduce confmigrate
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package confmigrate
import (
"fmt"
)
Pull request 1991: AG-25392 confmigrate vol.2 Merge in DNS/adguard-home from AG-25392-confmigrate-vol.2 to master Squashed commit of the following: commit 7bcdf443135523022a7e5ed6b2da05fcd784a896 Merge: 4c25331b5 f84ff2bd0 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 20:33:08 2023 +0300 Merge branch 'master' into AG-25392-confmigrate-vol.2 commit 4c25331b507078670e7f3505384b53179a210292 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 20:14:23 2023 +0300 confmigrate: fix fmt commit d7dbfc46a7f825d248cb028d50b60eede941bf67 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 20:07:25 2023 +0300 confmigrate: imp code commit cd29729a23d1782a0b5fbd1e9153fe61ff3dbc71 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 18:21:14 2023 +0300 confmigrate: imp code, split files commit f075a14c251c68a13152709e14a326ad17c2f889 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 17:19:47 2023 +0300 confmigrate: imp code commit 37335597e7870184528c1d868e2d5bd5525a74bb Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 16:54:13 2023 +0300 confmigrate: imp code, docs commit 1df0ddcad99e5056b4989d17490ca4b44ae17838 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Mon Sep 4 14:41:52 2023 +0300 all: add testdata commit e62690dbe8e458811bbd6b115b4449affa729560 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Thu Aug 31 16:13:14 2023 +0300 all: imp code commit 0934d5974b31a58b31b12412c3cd1a50810ffc4f Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Aug 30 15:50:52 2023 +0300 home: don't reread config commit 7566ab6f330460bd608aae6dc0428a631e2fa4e3 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Aug 30 15:43:57 2023 +0300 all: imp code commit 6f6aae6290f8d3101f3678ecc705eee7030ad8d5 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Aug 30 15:25:46 2023 +0300 all: introduce confmigrate
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type (
// yarr is the convenience alias for YAML array.
yarr = []any
// yobj is the convenience alias for YAML key-value object.
yobj = map[string]any
)
// fieldVal returns the value of type T for key from obj. Use [any] if the
// field's type doesn't matter.
func fieldVal[T any](obj yobj, key string) (v T, ok bool, err error) {
val, ok := obj[key]
if !ok {
return v, false, nil
}
if val == nil {
return v, true, nil
}
v, ok = val.(T)
if !ok {
return v, false, fmt.Errorf("unexpected type of %q: %T", key, val)
}
return v, true, nil
}
// moveVal copies the value for srcKey from src into dst for dstKey and deletes
// it from src.
func moveVal[T any](src, dst yobj, srcKey, dstKey string) (err error) {
newVal, ok, err := fieldVal[T](src, srcKey)
if !ok {
return err
}
dst[dstKey] = newVal
delete(src, srcKey)
return nil
}
// moveSameVal moves the value for key from src into dst.
func moveSameVal[T any](src, dst yobj, key string) (err error) {
return moveVal[T](src, dst, key, key)
}
// coalesceError returns the first non-nil error. It is named after function
// COALESCE in SQL. If all errors are nil, it returns nil.
//
// TODO(e.burkov): Replace with [errors.Join].
//
// TODO(a.garipov): Think of ways to merge with [aghalg.Coalesce].
func coalesceError(errors ...error) (res error) {
for _, err := range errors {
if err != nil {
return err
}
}
return nil
}