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chart.go
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chart.go
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// Copyright (c) 2020 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 terraformer
import (
"fmt"
"github.com/gardener/gardener/pkg/chartrenderer"
)
// TerraformFiles contains all files necessary for initializing a Terraformer.
type TerraformFiles struct {
Main string
Variables string
TFVars []byte
}
func nonEmptyFileContent(release *chartrenderer.RenderedChart, filename string) (string, error) {
content := release.FileContent(filename)
if len(content) == 0 {
return "", fmt.Errorf("empty %s file", filename)
}
return content, nil
}
// ExtractTerraformFiles extracts TerraformFiles from the given RenderedChart.
//
// It errors if a file is not contained in the chart.
func ExtractTerraformFiles(release *chartrenderer.RenderedChart) (*TerraformFiles, error) {
main, err := nonEmptyFileContent(release, MainKey)
if err != nil {
return nil, err
}
variables, err := nonEmptyFileContent(release, VariablesKey)
if err != nil {
return nil, err
}
tfVars, err := nonEmptyFileContent(release, TFVarsKey)
if err != nil {
return nil, err
}
return &TerraformFiles{
Main: main,
Variables: variables,
TFVars: []byte(tfVars),
}, nil
}