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Merge pull request #4 from fluxcd/install-version

Browse source 
Allow multiple installs based on namespace and version
This commit is contained in:
Stefan Prodan 2020-04-26 22:54:15 +03:00 committed by GitHub
commit 7a804dfb2e
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
9 changed files with 306 additions and 138 deletions
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12
.github/workflows/e2e.yaml vendored
View file

@ -37,10 +37,20 @@ jobs:
fi
- name: Build
run: sudo go build -o ./bin/tk ./cmd/tk
- name: Run integration tests
- name: Run check e2e tests
run: |
./bin/tk check
- name: Run install version e2e tests
run: |
./bin/tk install --version=master --namespace=test --verbose
- name: Run uninstall e2e tests
run: |
./bin/tk uninstall --namespace=test --crds --silent
- name: Run dev install e2e tests
run: |
./bin/tk install --manifests ./manifests/install/
- name: Run create source e2e tests
run: |
./bin/tk create source podinfo --git-url https://github.com/stefanprodan/podinfo-deploy --git-semver=">=0.0.1-rc.1 <0.1.0"
- name: Debug failure
if: failure()

23
cmd/tk/check.go
View file

@ -1,6 +1,7 @@
package main
import (
"context"
"os"
"os/exec"
"strings"
@ -31,17 +32,20 @@ func init() {
}
func runCheckCmd(cmd *cobra.Command, args []string) error {
ctx, cancel := context.WithTimeout(context.Background(), timeout)
defer cancel()
logAction("starting verification")
checkFailed := false
if !sshCheck() {
checkFailed = true
}
if !kubectlCheck(">=1.18.0") {
if !kubectlCheck(ctx, ">=1.18.0") {
checkFailed = true
}
if !kustomizeCheck(">=3.5.0") {
if !kustomizeCheck(ctx, ">=3.5.0") {
checkFailed = true
}
@ -79,14 +83,15 @@ func sshCheck() bool {
return ok
}
func kubectlCheck(version string) bool {
func kubectlCheck(ctx context.Context, version string) bool {
_, err := exec.LookPath("kubectl")
if err != nil {
logFailure("kubectl not found")
return false
}
output, err := execCommand("kubectl version --client --short | awk '{ print $3 }'")
command := "kubectl version --client --short | awk '{ print $3 }'"
output, err := utils.execCommand(ctx, ModeCapture, command)
if err != nil {
logFailure("kubectl version can't be determined")
return false
@ -108,21 +113,23 @@ func kubectlCheck(version string) bool {
return true
}
func kustomizeCheck(version string) bool {
func kustomizeCheck(ctx context.Context, version string) bool {
_, err := exec.LookPath("kustomize")
if err != nil {
logFailure("kustomize not found")
return false
}
output, err := execCommand("kustomize version --short | awk '{ print $1 }' | cut -c2-")
command := "kustomize version --short | awk '{ print $1 }' | cut -c2-"
output, err := utils.execCommand(ctx, ModeCapture, command)
if err != nil {
logFailure("kustomize version can't be determined")
return false
}
if strings.Contains(output, "kustomize/") {
output, err = execCommand("kustomize version --short | awk '{ print $1 }' | cut -c12-")
command = "kustomize version --short | awk '{ print $1 }' | cut -c12-"
output, err = utils.execCommand(ctx, ModeCapture, command)
if err != nil {
logFailure("kustomize version can't be determined")
return false
@ -146,7 +153,7 @@ func kustomizeCheck(version string) bool {
}
func kubernetesCheck(version string) bool {
client, err := kubernetesClient()
client, err := utils.kubeClient(kubeconfig)
if err != nil {
logFailure("kubernetes client initialization failed: %s", err.Error())
return false

66
cmd/tk/create_source.go
View file

@ -5,11 +5,9 @@ import (
"bytes"
"context"
"fmt"
"io"
"io/ioutil"
"net/url"
"os"
"os/exec"
"strings"
"text/template"
@ -44,7 +42,6 @@ var (
sourceGitSemver string
sourceUsername string
sourcePassword string
sourceVerbose bool
)
func init() {
@ -53,7 +50,6 @@ func init() {
createSourceCmd.Flags().StringVar(&sourceGitSemver, "git-semver", "", "git tag semver range")
createSourceCmd.Flags().StringVarP(&sourceUsername, "username", "u", "", "basic authentication username")
createSourceCmd.Flags().StringVarP(&sourcePassword, "password", "p", "", "basic authentication password")
createSourceCmd.Flags().BoolVarP(&sourceVerbose, "verbose", "", false, "print generated source object")
createCmd.AddCommand(createSourceCmd)
}
@ -84,12 +80,12 @@ func createSourceCmdRun(cmd *cobra.Command, args []string) error {
withAuth := false
if strings.HasPrefix(sourceGitURL, "ssh") {
if err := generateSSH(name, u.Host, tmpDir); err != nil {
if err := generateSSH(ctx, name, u.Host, tmpDir); err != nil {
return err
}
withAuth = true
} else if sourceUsername != "" && sourcePassword != "" {
if err := generateBasicAuth(name); err != nil {
if err := generateBasicAuth(ctx, name); err != nil {
return err
}
withAuth = true
@ -129,69 +125,59 @@ func createSourceCmdRun(cmd *cobra.Command, args []string) error {
return fmt.Errorf("source flush failed: %w", err)
}
if sourceVerbose {
if verbose {
fmt.Print(data.String())
}
command := fmt.Sprintf("echo '%s' | kubectl apply -f-", data.String())
c := exec.CommandContext(ctx, "/bin/sh", "-c", command)
var stdoutBuf, stderrBuf bytes.Buffer
c.Stdout = io.MultiWriter(os.Stdout, &stdoutBuf)
c.Stderr = io.MultiWriter(os.Stderr, &stderrBuf)
err = c.Run()
if err != nil {
if _, err := utils.execCommand(ctx, ModeStderrOS, command); err != nil {
return fmt.Errorf("source apply failed")
}
logAction("waiting for source sync")
if output, err := execCommand(fmt.Sprintf(
"kubectl -n %s wait gitrepository/%s --for=condition=ready --timeout=1m",
namespace, name)); err != nil {
return fmt.Errorf("source sync failed: %s", output)
} else {
fmt.Print(output)
command = fmt.Sprintf("kubectl -n %s wait gitrepository/%s --for=condition=ready --timeout=1m",
namespace, name)
if _, err := utils.execCommand(ctx, ModeStderrOS, command); err != nil {
return fmt.Errorf("source sync failed")
}
logSuccess("source %s is ready", name)
return nil
}
func generateBasicAuth(name string) error {
func generateBasicAuth(ctx context.Context, name string) error {
logAction("saving credentials")
credentials := fmt.Sprintf("--from-literal=username='%s' --from-literal=password='%s'",
sourceUsername, sourcePassword)
secret := fmt.Sprintf("kubectl -n %s create secret generic %s %s --dry-run=client -oyaml | kubectl apply -f-",
namespace, name, credentials)
if output, err := execCommand(secret); err != nil {
return fmt.Errorf("kubectl create secret failed: %s", output)
} else {
fmt.Print(output)
if _, err := utils.execCommand(ctx, ModeOS, secret); err != nil {
return fmt.Errorf("kubectl create secret failed")
}
return nil
}
func generateSSH(name, host, tmpDir string) error {
func generateSSH(ctx context.Context, name, host, tmpDir string) error {
logAction("generating host key for %s", host)
keyscan := fmt.Sprintf("ssh-keyscan %s > %s/known_hosts", host, tmpDir)
if output, err := execCommand(keyscan); err != nil {
return fmt.Errorf("ssh-keyscan failed: %s", output)
command := fmt.Sprintf("ssh-keyscan %s > %s/known_hosts", host, tmpDir)
if _, err := utils.execCommand(ctx, ModeStderrOS, command); err != nil {
return fmt.Errorf("ssh-keyscan failed")
}
logAction("generating deploy key")
keygen := fmt.Sprintf("ssh-keygen -b 2048 -t rsa -f %s/identity -q -N \"\"", tmpDir)
if output, err := execCommand(keygen); err != nil {
return fmt.Errorf("ssh-keygen failed: %s", output)
command = fmt.Sprintf("ssh-keygen -b 2048 -t rsa -f %s/identity -q -N \"\"", tmpDir)
if _, err := utils.execCommand(ctx, ModeStderrOS, command); err != nil {
return fmt.Errorf("ssh-keygen failed")
}
deployKey, err := execCommand(fmt.Sprintf("cat %s/identity.pub", tmpDir))
if err != nil {
command = fmt.Sprintf("cat %s/identity.pub", tmpDir)
if deployKey, err := utils.execCommand(ctx, ModeCapture, command); err != nil {
return fmt.Errorf("unable to read identity.pub: %w", err)
} else {
fmt.Print(deployKey)
}
fmt.Print(deployKey)
prompt := promptui.Prompt{
Label: "Have you added the deploy key to your repository",
IsConfirm: true,
@ -206,10 +192,8 @@ func generateSSH(name, host, tmpDir string) error {
tmpDir, tmpDir, tmpDir)
secret := fmt.Sprintf("kubectl -n %s create secret generic %s %s --dry-run=client -oyaml | kubectl apply -f-",
namespace, name, files)
if output, err := execCommand(secret); err != nil {
return fmt.Errorf("kubectl create secret failed: %s", output)
} else {
fmt.Print(output)
if _, err := utils.execCommand(ctx, ModeOS, secret); err != nil {
return fmt.Errorf("create secret failed")
}
return nil
}

173
cmd/tk/install.go
View file

@ -1,12 +1,11 @@
package main
import (
"bytes"
"context"
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"path"
"strings"
"github.com/spf13/cobra"
@ -16,78 +15,178 @@ var installCmd = &cobra.Command{
Use: "install",
Short: "Install the toolkit components",
Long: `
The Install command deploys the toolkit components
The install command deploys the toolkit components
on the configured Kubernetes cluster in ~/.kube/config`,
Example: ` install --manifests github.com/fluxcd/toolkit//manifests/install --dry-run`,
Example: ` install --version=master --namespace=gitops-systems`,
RunE: installCmdRun,
}
var (
installDryRun bool
installManifestsPath string
installVersion string
)
func init() {
installCmd.Flags().BoolVarP(&installDryRun, "dry-run", "", false,
"only print the object that would be applied")
installCmd.Flags().StringVarP(&installVersion, "version", "v", "master",
"toolkit tag or branch")
installCmd.Flags().StringVarP(&installManifestsPath, "manifests", "", "",
"path to the manifest directory")
"path to the manifest directory, dev only")
rootCmd.AddCommand(installCmd)
}
func installCmdRun(cmd *cobra.Command, args []string) error {
if installManifestsPath == "" {
return fmt.Errorf("no manifests specified")
}
if !strings.HasPrefix(installManifestsPath, "github.com/") {
if _, err := os.Stat(installManifestsPath); err != nil {
return fmt.Errorf("manifests not found: %w", err)
}
}
ctx, cancel := context.WithTimeout(context.Background(), timeout)
defer cancel()
var kustomizePath string
if installVersion == "" && !strings.HasPrefix(installManifestsPath, "github.com/") {
if _, err := os.Stat(installManifestsPath); err != nil {
return fmt.Errorf("manifests not found: %w", err)
}
kustomizePath = installManifestsPath
}
tmpDir, err := ioutil.TempDir("", namespace)
if err != nil {
return err
}
defer os.RemoveAll(tmpDir)
logAction("generating install manifests")
if kustomizePath == "" {
err = genInstallManifests(installVersion, namespace, tmpDir)
if err != nil {
return fmt.Errorf("install failed: %w", err)
}
kustomizePath = tmpDir
}
manifest := path.Join(tmpDir, fmt.Sprintf("%s.yaml", namespace))
command := fmt.Sprintf("kustomize build %s > %s", kustomizePath, manifest)
if _, err := utils.execCommand(ctx, ModeStderrOS, command); err != nil {
return fmt.Errorf("install failed")
}
command = fmt.Sprintf("cat %s", manifest)
if yaml, err := utils.execCommand(ctx, ModeCapture, command); err != nil {
return fmt.Errorf("install failed: %w", err)
} else {
if verbose {
fmt.Print(yaml)
}
}
logSuccess("build completed")
logAction("installing components in %s namespace", namespace)
applyOutput := ModeStderrOS
if verbose {
applyOutput = ModeOS
}
dryRun := ""
if installDryRun {
dryRun = "--dry-run=client"
applyOutput = ModeOS
}
command := fmt.Sprintf("kustomize build %s | kubectl apply -f- %s",
installManifestsPath, dryRun)
c := exec.CommandContext(ctx, "/bin/sh", "-c", command)
var stdoutBuf, stderrBuf bytes.Buffer
c.Stdout = io.MultiWriter(os.Stdout, &stdoutBuf)
c.Stderr = io.MultiWriter(os.Stderr, &stderrBuf)
logAction("installing components in %s namespace", namespace)
err := c.Run()
if err != nil {
logFailure("install failed")
os.Exit(1)
command = fmt.Sprintf("cat %s | kubectl apply -f- %s", manifest, dryRun)
if _, err := utils.execCommand(ctx, applyOutput, command); err != nil {
return fmt.Errorf("install failed")
}
if installDryRun {
logSuccess("install dry-run finished")
return nil
} else {
logSuccess("install completed")
}
logAction("verifying installation")
for _, deployment := range []string{"source-controller", "kustomize-controller"} {
command = fmt.Sprintf("kubectl -n %s rollout status deployment %s --timeout=%s",
namespace, deployment, timeout.String())
c = exec.CommandContext(ctx, "/bin/sh", "-c", command)
c.Stdout = io.MultiWriter(os.Stdout, &stdoutBuf)
c.Stderr = io.MultiWriter(os.Stderr, &stderrBuf)
err := c.Run()
if err != nil {
logFailure("install failed")
os.Exit(1)
if _, err := utils.execCommand(ctx, applyOutput, command); err != nil {
return fmt.Errorf("install failed")
} else {
logSuccess("%s ready", deployment)
}
}
logSuccess("install finished")
return nil
}
var namespaceTmpl = `---
apiVersion: v1
kind: Namespace
metadata:
name: {{.Namespace}}
`
var labelsTmpl = `---
apiVersion: builtin
kind: LabelTransformer
metadata:
name: labels
labels:
app.kubernetes.io/instance: {{.Namespace}}
app.kubernetes.io/version: "{{.Version}}"
fieldSpecs:
- path: metadata/labels
create: true
`
var kustomizationTmpl = `---
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
namespace: {{.Namespace}}
transformers:
- labels.yaml
resources:
- namespace.yaml
- roles
- github.com/fluxcd/toolkit/manifests/bases/source-controller?ref={{.Version}}
- github.com/fluxcd/toolkit/manifests/bases/kustomize-controller?ref={{.Version}}
- github.com/fluxcd/toolkit/manifests/policies?ref={{.Version}}
`
var kustomizationRolesTmpl = `---
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
- github.com/fluxcd/toolkit/manifests/rbac?ref={{.Version}}
nameSuffix: -{{.Namespace}}
`
func genInstallManifests(ver, ns, tmpDir string) error {
model := struct {
Version string
Namespace string
}{
Version: ver,
Namespace: ns,
}
if err := utils.execTemplate(model, namespaceTmpl, path.Join(tmpDir, "namespace.yaml")); err != nil {
return fmt.Errorf("generate namespace failed: %w", err)
}
if err := utils.execTemplate(model, labelsTmpl, path.Join(tmpDir, "labels.yaml")); err != nil {
return fmt.Errorf("generate labels failed: %w", err)
}
if err := utils.execTemplate(model, kustomizationTmpl, path.Join(tmpDir, "kustomization.yaml")); err != nil {
return fmt.Errorf("generate kustomization failed: %w", err)
}
if err := os.MkdirAll(path.Join(tmpDir, "roles"), os.ModePerm); err != nil {
return fmt.Errorf("generate roles failed: %w", err)
}
if err := utils.execTemplate(model, kustomizationRolesTmpl, path.Join(tmpDir, "roles/kustomization.yaml")); err != nil {
return fmt.Errorf("generate roles failed: %w", err)
}
return nil
}

30
cmd/tk/main.go
View file

@ -4,15 +4,12 @@ import (
"fmt"
"log"
"os"
"os/exec"
"path/filepath"
"time"
"github.com/spf13/cobra"
"github.com/spf13/cobra/doc"
"k8s.io/client-go/kubernetes"
_ "k8s.io/client-go/plugin/pkg/client/auth"
"k8s.io/client-go/tools/clientcmd"
)
var VERSION = "0.0.1"
@ -30,6 +27,8 @@ var (
kubeconfig string
namespace string
timeout time.Duration
verbose bool
utils Utils
)
func init() {
@ -37,6 +36,8 @@ func init() {
"the namespace scope for this operation")
rootCmd.PersistentFlags().DurationVarP(&timeout, "timeout", "", 5*time.Minute,
"timeout for this operation")
rootCmd.PersistentFlags().BoolVarP(&verbose, "verbose", "", false,
"print generated objects")
}
func main() {
@ -56,29 +57,6 @@ func homeDir() string {
return os.Getenv("USERPROFILE") // windows
}
func kubernetesClient() (*kubernetes.Clientset, error) {
config, err := clientcmd.BuildConfigFromFlags("", kubeconfig)
if err != nil {
return nil, err
}
client, err := kubernetes.NewForConfig(config)
if err != nil {
return nil, err
}
return client, nil
}
func execCommand(command string) (string, error) {
c := exec.Command("/bin/sh", "-c", command)
output, err := c.CombinedOutput()
if err != nil {
return "", err
}
return string(output), nil
}
func logAction(format string, a ...interface{}) {
fmt.Println(`✚`, fmt.Sprintf(format, a...))
}

26
cmd/tk/uninstall.go
View file

@ -1,12 +1,8 @@
package main
import (
"bytes"
"context"
"fmt"
"io"
"os"
"os/exec"
"github.com/manifoldco/promptui"
"github.com/spf13/cobra"
@ -25,6 +21,7 @@ cluster role bindings and CRDs`,
var (
uninstallCRDs bool
uninstallDryRun bool
uninstallSilent bool
)
func init() {
@ -32,6 +29,8 @@ func init() {
"removes all CRDs previously installed")
uninstallCmd.Flags().BoolVarP(&uninstallDryRun, "dry-run", "", false,
"only print the object that would be deleted")
uninstallCmd.Flags().BoolVarP(&uninstallSilent, "silent", "", false,
"delete components without asking for confirmation")
rootCmd.AddCommand(uninstallCmd)
}
@ -43,14 +42,13 @@ func uninstallCmdRun(cmd *cobra.Command, args []string) error {
dryRun := ""
if uninstallDryRun {
dryRun = "--dry-run=client"
} else {
} else if !uninstallSilent {
prompt := promptui.Prompt{
Label: fmt.Sprintf("Are you sure you want to delete the %s namespace", namespace),
IsConfirm: true,
}
if _, err := prompt.Run(); err != nil {
logFailure("aborting")
os.Exit(1)
return fmt.Errorf("aborting")
}
}
@ -59,19 +57,11 @@ func uninstallCmdRun(cmd *cobra.Command, args []string) error {
kinds += ",crds"
}
logAction("uninstalling components")
command := fmt.Sprintf("kubectl delete %s -l app.kubernetes.io/instance=%s --timeout=%s %s",
kinds, namespace, timeout.String(), dryRun)
c := exec.CommandContext(ctx, "/bin/sh", "-c", command)
var stdoutBuf, stderrBuf bytes.Buffer
c.Stdout = io.MultiWriter(os.Stdout, &stdoutBuf)
c.Stderr = io.MultiWriter(os.Stderr, &stderrBuf)
logAction("uninstalling components")
err := c.Run()
if err != nil {
logFailure("uninstall failed")
os.Exit(1)
if _, err := utils.execCommand(ctx, ModeOS, command); err != nil {
return fmt.Errorf("uninstall failed")
}
logSuccess("uninstall finished")

100
cmd/tk/utils.go Normal file
View file

@ -0,0 +1,100 @@
package main
import (
"bufio"
"bytes"
"context"
"io"
"os"
"os/exec"
"text/template"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/clientcmd"
)
type Utils struct {
}
type ExecMode string
const (
ModeOS ExecMode = "os.stderr|stdout"
ModeStderrOS ExecMode = "os.stderr"
ModeCapture ExecMode = "capture.stderr|stdout"
)
func (*Utils) execCommand(ctx context.Context, mode ExecMode, command string) (string, error) {
var stdoutBuf, stderrBuf bytes.Buffer
c := exec.CommandContext(ctx, "/bin/sh", "-c", command)
if mode == ModeStderrOS {
c.Stderr = io.MultiWriter(os.Stderr, &stderrBuf)
}
if mode == ModeOS {
c.Stdout = io.MultiWriter(os.Stdout, &stdoutBuf)
c.Stderr = io.MultiWriter(os.Stderr, &stderrBuf)
}
if mode == ModeStderrOS || mode == ModeOS {
if err := c.Run(); err != nil {
return "", err
} else {
return "", nil
}
}
if mode == ModeCapture {
if output, err := c.CombinedOutput(); err != nil {
return "", err
} else {
return string(output), nil
}
}
return "", nil
}
func (*Utils) execTemplate(obj interface{}, tmpl, filename string) error {
t, err := template.New("tmpl").Parse(tmpl)
if err != nil {
return err
}
var data bytes.Buffer
writer := bufio.NewWriter(&data)
if err := t.Execute(writer, obj); err != nil {
return err
}
if err := writer.Flush(); err != nil {
return err
}
file, err := os.Create(filename)
if err != nil {
return err
}
defer file.Close()
_, err = io.WriteString(file, data.String())
if err != nil {
return err
}
return file.Sync()
}
func (*Utils) kubeClient(config string) (*kubernetes.Clientset, error) {
cfg, err := clientcmd.BuildConfigFromFlags("", config)
if err != nil {
return nil, err
}
client, err := kubernetes.NewForConfig(cfg)
if err != nil {
return nil, err
}
return client, nil
}

2
go.mod
View file

@ -6,5 +6,5 @@ require (
github.com/blang/semver v3.5.1+incompatible
github.com/manifoldco/promptui v0.7.0
github.com/spf13/cobra v0.0.6
k8s.io/client-go v0.18.0
k8s.io/client-go v0.18.2
)

12
go.sum
View file

@ -298,12 +298,12 @@ gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
k8s.io/api v0.18.0 h1:lwYk8Vt7rsVTwjRU6pzEsa9YNhThbmbocQlKvNBB4EQ=
k8s.io/api v0.18.0/go.mod h1:q2HRQkfDzHMBZL9l/y9rH63PkQl4vae0xRT+8prbrK8=
k8s.io/apimachinery v0.18.0 h1:fuPfYpk3cs1Okp/515pAf0dNhL66+8zk8RLbSX+EgAE=
k8s.io/apimachinery v0.18.0/go.mod h1:9SnR/e11v5IbyPCGbvJViimtJ0SwHG4nfZFjU77ftcA=
k8s.io/client-go v0.18.0 h1:yqKw4cTUQraZK3fcVCMeSa+lqKwcjZ5wtcOIPnxQno4=
k8s.io/client-go v0.18.0/go.mod h1:uQSYDYs4WhVZ9i6AIoEZuwUggLVEF64HOD37boKAtF8=
k8s.io/api v0.18.2 h1:wG5g5ZmSVgm5B+eHMIbI9EGATS2L8Z72rda19RIEgY8=
k8s.io/api v0.18.2/go.mod h1:SJCWI7OLzhZSvbY7U8zwNl9UA4o1fizoug34OV/2r78=
k8s.io/apimachinery v0.18.2 h1:44CmtbmkzVDAhCpRVSiP2R5PPrC2RtlIv/MoB8xpdRA=
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