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/*
Copyright 2020 The Compose Specification Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package transform
import (
"github.com/compose-spec/compose-go/v2/tree"
)
type transformFunc func(data any, p tree.Path, ignoreParseError bool) (any, error)
var transformers = map[tree.Path]transformFunc{}
func init() {
transformers["services.*"] = transformService
transformers["services.*.build.secrets.*"] = transformFileMount
transformers["services.*.build.additional_contexts"] = transformKeyValue
transformers["services.*.depends_on"] = transformDependsOn
transformers["services.*.env_file"] = transformEnvFile
transformers["services.*.label_file"] = transformStringOrList
transformers["services.*.extends"] = transformExtends
transformers["services.*.gpus"] = transformGpus
transformers["services.*.networks"] = transformServiceNetworks
transformers["services.*.volumes.*"] = transformVolumeMount
transformers["services.*.dns"] = transformStringOrList
transformers["services.*.devices.*"] = transformDeviceMapping
transformers["services.*.secrets.*"] = transformFileMount
transformers["services.*.configs.*"] = transformFileMount
transformers["services.*.ports"] = transformPorts
transformers["services.*.build"] = transformBuild
transformers["services.*.build.ssh"] = transformSSH
transformers["services.*.ulimits.*"] = transformUlimits
transformers["services.*.build.ulimits.*"] = transformUlimits
transformers["volumes.*"] = transformMaybeExternal
transformers["networks.*"] = transformMaybeExternal
transformers["secrets.*"] = transformMaybeExternal
transformers["configs.*"] = transformMaybeExternal
transformers["include.*"] = transformInclude
}
func transformStringOrList(data any, _ tree.Path, _ bool) (any, error) {
switch t := data.(type) {
case string:
return []any{t}, nil
default:
return data, nil
}
}
// Canonical transforms a compose model into canonical syntax
func Canonical(yaml map[string]any, ignoreParseError bool) (map[string]any, error) {
canonical, err := transform(yaml, tree.NewPath(), ignoreParseError)
if err != nil {
return nil, err
}
return canonical.(map[string]any), nil
}
func transform(data any, p tree.Path, ignoreParseError bool) (any, error) {
for pattern, transformer := range transformers {
if p.Matches(pattern) {
t, err := transformer(data, p, ignoreParseError)
if err != nil {
return nil, err
}
return t, nil
}
}
switch v := data.(type) {
case map[string]any:
a, err := transformMapping(v, p, ignoreParseError)
if err != nil {
return a, err
}
return v, nil
case []any:
a, err := transformSequence(v, p, ignoreParseError)
if err != nil {
return a, err
}
return v, nil
default:
return data, nil
}
}
func transformSequence(v []any, p tree.Path, ignoreParseError bool) ([]any, error) {
for i, e := range v {
t, err := transform(e, p.Next("[]"), ignoreParseError)
if err != nil {
return nil, err
}
v[i] = t
}
return v, nil
}
func transformMapping(v map[string]any, p tree.Path, ignoreParseError bool) (map[string]any, error) {
for k, e := range v {
t, err := transform(e, p.Next(k), ignoreParseError)
if err != nil {
return nil, err
}
v[k] = t
}
return v, nil
}
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