istio.io/pkg/test/istioio/yaml.go

84 lines
2.1 KiB
Go

// Copyright Istio 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 istioio
import (
"fmt"
"path/filepath"
"istio.io/istio/pkg/test/util/yml"
)
var _ Step = YamlResources{}
// YamlResources is a test step that generates individual snippets for resources within a given
// YAML document.
type YamlResources struct {
// BaseName for the generated snippets. If not provided, the base name of Input will be used.
BaseName string
// Input YAML document.
Input InputSelector
// ResourceNames provides the names of the resources for which to generate snippets.
ResourceNames []string
}
func (s YamlResources) run(ctx Context) {
input := s.Input.SelectInput(ctx)
content, err := input.ReadAll()
if err != nil {
ctx.Fatalf("failed reading YAML input %s: %v", input.Name(), err)
}
parts, err := yml.Parse(content)
if err != nil {
ctx.Fatalf("failed parsing YAML input %s: %v", input.Name(), err)
}
// Get the base name for the snippets.
baseName := s.BaseName
if baseName == "" {
baseName = filepath.Base(input.Name())
}
for _, resourceName := range s.ResourceNames {
found := false
snippetName := fmt.Sprintf("%s_%s.yaml", baseName, resourceName)
for _, part := range parts {
if part.Descriptor.Metadata.Name == resourceName {
found = true
// Generate a snippet for this resource.
Snippet{
Name: snippetName,
Syntax: "yaml",
Input: Inline{
FileName: snippetName,
Value: part.Contents,
},
}.run(ctx)
break
}
}
if !found {
ctx.Fatalf("failed to find YAML resource %s from input %s", resourceName, input.Name)
}
}
}