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component-apply.go
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component-apply.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/components/util"
"github.com/kinvolk/lokomotive/pkg/config"
)
var componentApplyCmd = &cobra.Command{
Use: "apply",
Short: "Deploy or update a component",
Long: `Deploy or update a component.
Deploys a component if not yet present, otherwise updates it.
When run with no arguments, all components listed in the configuration are applied.`,
Run: runApply,
ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
if len(args) != 0 {
return nil, cobra.ShellCompDirectiveNoFileComp
}
return components.ListNames(), cobra.ShellCompDirectiveNoFileComp
},
}
func init() {
componentCmd.AddCommand(componentApplyCmd)
}
func runApply(cmd *cobra.Command, args []string) {
contextLogger := log.WithFields(log.Fields{
"command": "lokoctl component apply",
"args": args,
})
lokoConfig, diags := getLokoConfig()
if len(diags) > 0 {
contextLogger.Fatal(diags)
}
var componentsToApply []string
if len(args) > 0 {
componentsToApply = append(componentsToApply, args...)
} else {
for _, component := range lokoConfig.RootConfig.Components {
componentsToApply = append(componentsToApply, component.Name)
}
}
kubeconfig, err := getKubeconfig()
if err != nil {
contextLogger.Fatalf("Error in finding kubeconfig file: %s", err)
}
if err := applyComponents(lokoConfig, kubeconfig, componentsToApply...); err != nil {
contextLogger.Fatal(err)
}
}
func applyComponents(lokoConfig *config.Config, kubeconfig []byte, componentNames ...string) error {
for _, componentName := range componentNames {
fmt.Printf("Applying component '%s'...\n", componentName)
component, err := components.Get(componentName)
if err != nil {
return err
}
componentConfigBody := lokoConfig.LoadComponentConfigBody(componentName)
if diags := component.LoadConfig(componentConfigBody, lokoConfig.EvalContext); len(diags) > 0 {
fmt.Printf("%v\n", diags)
return diags
}
if err := util.InstallComponent(component, kubeconfig); err != nil {
return err
}
fmt.Printf("Successfully applied component '%s' configuration!\n", componentName)
}
return nil
}