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component-render-manifest.go
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component-render-manifest.go
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// Copyright 2020 The Lokomotive 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 cmd
import (
"fmt"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"github.com/kinvolk/lokomotive/pkg/components"
"github.com/kinvolk/lokomotive/pkg/config"
)
var componentRenderCmd = &cobra.Command{
Use: "render-manifest",
Short: "Print the manifests for a component",
Run: runComponentRender,
}
func init() {
componentCmd.AddCommand(componentRenderCmd)
}
func runComponentRender(cmd *cobra.Command, args []string) {
contextLogger := log.WithFields(log.Fields{
"command": "lokoctl component render-manifest",
"args": args,
})
lokoConfig, diags := getLokoConfig()
if diags.HasErrors() {
for _, diagnostic := range diags {
contextLogger.Error(diagnostic.Error())
}
contextLogger.Fatal("Errors found while loading configuration")
}
var componentsToRender []string
if len(args) > 0 {
componentsToRender = append(componentsToRender, args...)
} else {
for _, component := range lokoConfig.RootConfig.Components {
componentsToRender = append(componentsToRender, component.Name)
}
}
if err := renderComponentManifests(lokoConfig, componentsToRender...); err != nil {
contextLogger.Fatal(err)
}
}
func renderComponentManifests(lokoConfig *config.Config, componentNames ...string) error {
for _, componentName := range componentNames {
contextLogger := log.WithFields(log.Fields{
"component": componentName,
})
component, err := components.Get(componentName)
if err != nil {
return err
}
componentConfigBody := lokoConfig.LoadComponentConfigBody(componentName)
if diags := component.LoadConfig(componentConfigBody, lokoConfig.EvalContext); diags.HasErrors() {
for _, diagnostic := range diags {
contextLogger.Error(diagnostic.Error())
}
return diags
}
manifests, err := component.RenderManifests()
if err != nil {
return err
}
fmt.Printf("# manifests for component %s\n", componentName)
for filename, manifest := range manifests {
fmt.Printf("\n---\n# %s\n%s", filename, manifest)
}
}
return nil
}