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278 lines
7.5 KiB
278 lines
7.5 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 installer // import "k8s.io/helm/pkg/plugin/installer"
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import (
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"archive/tar"
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"bytes"
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"compress/gzip"
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"encoding/base64"
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"fmt"
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"io/ioutil"
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"k8s.io/helm/pkg/helm/helmpath"
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"os"
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"path/filepath"
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"testing"
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)
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var _ Installer = new(HTTPInstaller)
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// Fake http client
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type TestHTTPGetter struct {
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MockResponse *bytes.Buffer
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MockError error
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}
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func (t *TestHTTPGetter) Get(href string) (*bytes.Buffer, error) { return t.MockResponse, t.MockError }
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// Fake plugin tarball data
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var fakePluginB64 = "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"
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func TestStripName(t *testing.T) {
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if stripPluginName("fake-plugin-0.0.1.tar.gz") != "fake-plugin" {
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t.Errorf("name does not match expected value")
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}
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if stripPluginName("fake-plugin-0.0.1.tgz") != "fake-plugin" {
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t.Errorf("name does not match expected value")
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}
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if stripPluginName("fake-plugin.tgz") != "fake-plugin" {
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t.Errorf("name does not match expected value")
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}
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if stripPluginName("fake-plugin.tar.gz") != "fake-plugin" {
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t.Errorf("name does not match expected value")
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}
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}
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func TestHTTPInstaller(t *testing.T) {
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source := "https://repo.localdomain/plugins/fake-plugin-0.0.1.tar.gz"
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hh, err := ioutil.TempDir("", "helm-home-")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(hh)
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home := helmpath.Home(hh)
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if err := os.MkdirAll(home.Plugins(), 0755); err != nil {
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t.Fatalf("Could not create %s: %s", home.Plugins(), err)
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}
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i, err := NewForSource(source, "0.0.1", home)
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if err != nil {
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t.Errorf("unexpected error: %s", err)
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}
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// ensure a HTTPInstaller was returned
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httpInstaller, ok := i.(*HTTPInstaller)
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if !ok {
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t.Error("expected a HTTPInstaller")
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}
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// inject fake http client responding with minimal plugin tarball
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mockTgz, err := base64.StdEncoding.DecodeString(fakePluginB64)
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if err != nil {
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t.Fatalf("Could not decode fake tgz plugin: %s", err)
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}
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httpInstaller.getter = &TestHTTPGetter{
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MockResponse: bytes.NewBuffer(mockTgz),
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}
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// install the plugin
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if err := Install(i); err != nil {
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t.Error(err)
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}
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if i.Path() != home.Path("plugins", "fake-plugin") {
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t.Errorf("expected path '$HELM_HOME/plugins/fake-plugin', got %q", i.Path())
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}
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// Install again to test plugin exists error
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if err := Install(i); err == nil {
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t.Error("expected error for plugin exists, got none")
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} else if err.Error() != "plugin already exists" {
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t.Errorf("expected error for plugin exists, got (%v)", err)
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}
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}
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func TestHTTPInstallerNonExistentVersion(t *testing.T) {
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source := "https://repo.localdomain/plugins/fake-plugin-0.0.2.tar.gz"
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hh, err := ioutil.TempDir("", "helm-home-")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(hh)
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home := helmpath.Home(hh)
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if err := os.MkdirAll(home.Plugins(), 0755); err != nil {
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t.Fatalf("Could not create %s: %s", home.Plugins(), err)
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}
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i, err := NewForSource(source, "0.0.2", home)
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if err != nil {
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t.Errorf("unexpected error: %s", err)
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}
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// ensure a HTTPInstaller was returned
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httpInstaller, ok := i.(*HTTPInstaller)
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if !ok {
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t.Error("expected a HTTPInstaller")
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}
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// inject fake http client responding with error
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httpInstaller.getter = &TestHTTPGetter{
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MockError: fmt.Errorf("failed to download plugin for some reason"),
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}
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// attempt to install the plugin
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if err := Install(i); err == nil {
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t.Error("expected error from http client")
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}
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}
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func TestHTTPInstallerUpdate(t *testing.T) {
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source := "https://repo.localdomain/plugins/fake-plugin-0.0.1.tar.gz"
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hh, err := ioutil.TempDir("", "helm-home-")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(hh)
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home := helmpath.Home(hh)
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if err := os.MkdirAll(home.Plugins(), 0755); err != nil {
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t.Fatalf("Could not create %s: %s", home.Plugins(), err)
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}
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i, err := NewForSource(source, "0.0.1", home)
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if err != nil {
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t.Errorf("unexpected error: %s", err)
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}
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// ensure a HTTPInstaller was returned
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httpInstaller, ok := i.(*HTTPInstaller)
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if !ok {
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t.Error("expected a HTTPInstaller")
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}
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// inject fake http client responding with minimal plugin tarball
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mockTgz, err := base64.StdEncoding.DecodeString(fakePluginB64)
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if err != nil {
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t.Fatalf("Could not decode fake tgz plugin: %s", err)
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}
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httpInstaller.getter = &TestHTTPGetter{
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MockResponse: bytes.NewBuffer(mockTgz),
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}
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// install the plugin before updating
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if err := Install(i); err != nil {
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t.Error(err)
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}
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if i.Path() != home.Path("plugins", "fake-plugin") {
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t.Errorf("expected path '$HELM_HOME/plugins/fake-plugin', got %q", i.Path())
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}
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// Update plugin, should fail because it is not implemented
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if err := Update(i); err == nil {
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t.Error("update method not implemented for http installer")
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}
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}
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func TestExtract(t *testing.T) {
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//create a temp home
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hh, err := ioutil.TempDir("", "helm-home-")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(hh)
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home := helmpath.Home(hh)
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if err := os.MkdirAll(home.Plugins(), 0755); err != nil {
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t.Fatalf("Could not create %s: %s", home.Plugins(), err)
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}
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cacheDir := filepath.Join(home.Cache(), "plugins", "plugin-key")
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if err := os.MkdirAll(cacheDir, 0755); err != nil {
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t.Fatalf("Could not create %s: %s", cacheDir, err)
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}
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//{"plugin.yaml", "plugin metadata up in here"},
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//{"README.md", "so you know what's upp"},
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//{"script.sh", "echo script"},
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var tarbuf bytes.Buffer
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tw := tar.NewWriter(&tarbuf)
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var files = []struct {
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Name, Body string
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}{
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{"../../plugin.yaml", "sneaky plugin metadata"},
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{"README.md", "some text"},
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}
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for _, file := range files {
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hdr := &tar.Header{
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Name: file.Name,
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Typeflag: tar.TypeReg,
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Mode: 0600,
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Size: int64(len(file.Body)),
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}
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if err := tw.WriteHeader(hdr); err != nil {
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t.Fatal(err)
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}
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if _, err := tw.Write([]byte(file.Body)); err != nil {
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t.Fatal(err)
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}
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}
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if err := tw.Close(); err != nil {
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t.Fatal(err)
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}
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var buf bytes.Buffer
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gz := gzip.NewWriter(&buf)
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if _, err := gz.Write(tarbuf.Bytes()); err != nil {
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t.Fatal(err)
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}
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gz.Close()
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source := "https://repo.localdomain/plugins/fake-plugin-0.0.1.tgz"
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extr, err := NewExtractor(source)
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if err != nil {
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t.Fatal(err)
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}
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if err = extr.Extract(&buf, cacheDir); err != nil {
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t.Errorf("Did not expect error but got error: %v", err)
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}
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pluginYAMLFullPath := filepath.Join(cacheDir, "plugin.yaml")
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if _, err := os.Stat(pluginYAMLFullPath); err != nil {
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if os.IsNotExist(err) {
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t.Errorf("Expected %s to exist but doesn't", pluginYAMLFullPath)
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} else {
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t.Error(err)
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}
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}
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readmeFullPath := filepath.Join(cacheDir, "README.md")
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if _, err := os.Stat(readmeFullPath); err != nil {
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if os.IsNotExist(err) {
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t.Errorf("Expected %s to exist but doesn't", readmeFullPath)
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} else {
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t.Error(err)
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}
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}
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}
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