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131 lines
3.3 KiB
131 lines
3.3 KiB
/*
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Copyright The Helm Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main // import "helm.sh/helm/v3/cmd/helm"
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import (
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"fmt"
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"io"
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"log"
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"os"
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"strings"
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"github.com/spf13/cobra"
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"sigs.k8s.io/yaml"
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// Import to initialize client auth plugins.
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_ "k8s.io/client-go/plugin/pkg/client/auth"
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"helm.sh/helm/v3/pkg/action"
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"helm.sh/helm/v3/pkg/cli"
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"helm.sh/helm/v3/pkg/kube"
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kubefake "helm.sh/helm/v3/pkg/kube/fake"
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"helm.sh/helm/v3/pkg/release"
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"helm.sh/helm/v3/pkg/storage/driver"
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)
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var settings = cli.New()
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func init() {
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log.SetFlags(log.Lshortfile)
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}
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func debug(format string, v ...interface{}) {
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if settings.Debug {
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format = fmt.Sprintf("[debug] %s\n", format)
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log.Output(2, fmt.Sprintf(format, v...))
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}
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}
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func warning(format string, v ...interface{}) {
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format = fmt.Sprintf("WARNING: %s\n", format)
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fmt.Fprintf(os.Stderr, format, v...)
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}
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func main() {
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// Setting the name of the app for managedFields in the Kubernetes client.
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// It is set here to the full name of "helm" so that renaming of helm to
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// another name (e.g., helm2 or helm3) does not change the name of the
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// manager as picked up by the automated name detection.
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kube.ManagedFieldsManager = "helm"
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actionConfig := new(action.Configuration)
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cmd, err := newRootCmd(actionConfig, os.Stdout, os.Args[1:])
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if err != nil {
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warning("%+v", err)
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os.Exit(1)
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}
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// run when each command's execute method is called
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cobra.OnInitialize(func() {
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helmDriver := os.Getenv("HELM_DRIVER")
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if err := actionConfig.Init(settings.RESTClientGetter(), settings.Namespace(), helmDriver, debug); err != nil {
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log.Fatal(err)
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}
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if helmDriver == "memory" {
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loadReleasesInMemory(actionConfig)
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}
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})
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if err := cmd.Execute(); err != nil {
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debug("%+v", err)
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switch e := err.(type) {
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case pluginError:
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os.Exit(e.code)
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default:
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os.Exit(1)
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}
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}
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}
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// This function loads releases into the memory storage if the
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// environment variable is properly set.
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func loadReleasesInMemory(actionConfig *action.Configuration) {
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filePaths := strings.Split(os.Getenv("HELM_MEMORY_DRIVER_DATA"), ":")
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if len(filePaths) == 0 {
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return
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}
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store := actionConfig.Releases
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mem, ok := store.Driver.(*driver.Memory)
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if !ok {
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// For an unexpected reason we are not dealing with the memory storage driver.
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return
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}
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actionConfig.KubeClient = &kubefake.PrintingKubeClient{Out: io.Discard}
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for _, path := range filePaths {
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b, err := os.ReadFile(path)
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if err != nil {
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log.Fatal("Unable to read memory driver data", err)
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}
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releases := []*release.Release{}
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if err := yaml.Unmarshal(b, &releases); err != nil {
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log.Fatal("Unable to unmarshal memory driver data: ", err)
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}
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for _, rel := range releases {
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if err := store.Create(rel); err != nil {
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log.Fatal(err)
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}
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}
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}
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// Must reset namespace to the proper one
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mem.SetNamespace(settings.Namespace())
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}
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