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/
config.go
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/
config.go
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// Copyright 2016 CoreOS, Inc.
//
// 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 config
import (
"reflect"
yaml "github.com/ajeddeloh/yaml"
"github.com/coreos/container-linux-config-transpiler/config/astyaml"
"github.com/coreos/container-linux-config-transpiler/config/platform"
"github.com/coreos/container-linux-config-transpiler/config/types"
ignTypes "github.com/coreos/ignition/config/v2_2/types"
"github.com/coreos/ignition/config/validate"
"github.com/coreos/ignition/config/validate/astnode"
"github.com/coreos/ignition/config/validate/report"
)
// Parse will convert a byte slice containing a Container Linux Config into a
// golang struct representing the config, the parse tree from parsing the yaml
// and a report of any warnings or errors that occurred during the parsing.
func Parse(data []byte) (types.Config, astnode.AstNode, report.Report) {
var cfg types.Config
var r report.Report
if err := yaml.Unmarshal(data, &cfg); err != nil {
return types.Config{}, nil, report.ReportFromError(err, report.EntryError)
}
nodes := yaml.UnmarshalToNode(data)
var root astnode.AstNode
if nodes == nil {
r.Add(report.Entry{
Kind: report.EntryWarning,
Message: "Configuration is empty",
})
r.Merge(validate.ValidateWithoutSource(reflect.ValueOf(cfg)))
} else {
var err error
root, err = astyaml.FromYamlDocumentNode(*nodes)
if err != nil {
return types.Config{}, nil, report.ReportFromError(err, report.EntryError)
}
r.Merge(validate.Validate(reflect.ValueOf(cfg), root, nil, true))
}
if r.IsFatal() {
return types.Config{}, nil, r
}
return cfg, root, r
}
// Convert will convert a golang struct representing a Container Linux
// Config into an Ignition Config, and a report of any warnings or errors. It
// takes the parse tree from parsing the Container Linux config as well.
// Convert also accepts a platform string, which can either be one of the
// platform strings defined in config/templating/templating.go or an empty
// string if [dynamic data](doc/dynamic-data.md) isn't used.
func Convert(in types.Config, p string, ast astnode.AstNode) (ignTypes.Config, report.Report) {
if !platform.IsSupportedPlatform(p) {
r := report.Report{}
r.Add(report.Entry{
Kind: report.EntryError,
Message: "unsupported platform",
})
return ignTypes.Config{}, r
}
return types.Convert(in, p, ast)
}