Support for azure acr helm repositories (#1526)

Adds a basic support for Helm repositories hosted on Azure Container Registry (not OCI but classic ones). Add a new field to RepositorySpec to state that is externally managed and runs the `az-cli` command instead of the helm one to manage the repository.

pkg/helmexec/exec.go

@@ -105,34 +105,46 @@ func (helm *execer) SetHelmBinary(bin string) {
 	helm.helmBinary = bin
 }
 
-func (helm *execer) AddRepo(name, repository, cafile, certfile, keyfile, username, password string) error {
+func (helm *execer) AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string) error {
 	var args []string
+	var out []byte
+	var err error
 	if name == "" && repository != "" {
 		helm.logger.Infof("empty field name\n")
 		return fmt.Errorf("empty field name")
 	}
-	args = append(args, "repo", "add", name, repository)
+	switch managed {
+	case "acr":
+		helm.logger.Infof("Adding repo %v (acr)", name)
+		out, err = helm.azcli(name)
+	case "":
+		args = append(args, "repo", "add", name, repository)
 
-	// See https://github.com/helm/helm/pull/8777
-	if cons, err := semver.NewConstraint(">= 3.3.2, < 3.3.4"); err == nil {
-		if cons.Check(&helm.version) {
-			args = append(args, "--force-update")
+		// See https://github.com/helm/helm/pull/8777
+		if cons, err := semver.NewConstraint(">= 3.3.2, < 3.3.4"); err == nil {
+			if cons.Check(&helm.version) {
+				args = append(args, "--force-update")
+			}
+		} else {
+			panic(err)
 		}
-	} else {
-		panic(err)
-	}
 
-	if certfile != "" && keyfile != "" {
-		args = append(args, "--cert-file", certfile, "--key-file", keyfile)
+		if certfile != "" && keyfile != "" {
+			args = append(args, "--cert-file", certfile, "--key-file", keyfile)
+		}
+		if cafile != "" {
+			args = append(args, "--ca-file", cafile)
+		}
+		if username != "" && password != "" {
+			args = append(args, "--username", username, "--password", password)
+		}
+		helm.logger.Infof("Adding repo %v %v", name, repository)
+		out, err = helm.exec(args, map[string]string{})
+	default:
+		helm.logger.Errorf("ERROR: unknown type '%v' for repository %v", managed, name)
+		out = nil
+		err = nil
 	}
-	if cafile != "" {
-		args = append(args, "--ca-file", cafile)
-	}
-	if username != "" && password != "" {
-		args = append(args, "--username", username, "--password", password)
-	}
-	helm.logger.Infof("Adding repo %v %v", name, repository)
-	out, err := helm.exec(args, map[string]string{})
 	helm.info(out)
 	return err
 }
@@ -370,6 +382,15 @@ func (helm *execer) exec(args []string, env map[string]string) ([]byte, error) {
 	return bytes, err
 }
 
+func (helm *execer) azcli(name string) ([]byte, error) {
+	cmdargs := append(strings.Split("acr helm repo add --name", " "), name)
+	cmd := fmt.Sprintf("exec: az %s", strings.Join(cmdargs, " "))
+	helm.logger.Debug(cmd)
+	bytes, err := helm.runner.Execute("az", cmdargs, map[string]string{})
+	helm.logger.Debugf("%s: %s", cmd, bytes)
+	return bytes, err
+}
+
 func (helm *execer) info(out []byte) {
 	if len(out) > 0 {
 		helm.logger.Infof("%s", out)

pkg/helmexec/exec_test.go

@@ -82,7 +82,7 @@ func Test_AddRepo_Helm_3_3_2(t *testing.T) {
 		kubeContext: "dev",
 		runner:      &mockRunner{},
 	}
-	helm.AddRepo("myRepo", "https://repo.example.com/", "", "cert.pem", "key.pem", "", "")
+	helm.AddRepo("myRepo", "https://repo.example.com/", "", "cert.pem", "key.pem", "", "", "")
 	expected := `Adding repo myRepo https://repo.example.com/
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --force-update --cert-file cert.pem --key-file key.pem
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --force-update --cert-file cert.pem --key-file key.pem: 
@@ -96,7 +96,7 @@ func Test_AddRepo(t *testing.T) {
 	var buffer bytes.Buffer
 	logger := NewLogger(&buffer, "debug")
 	helm := MockExecer(logger, "dev")
-	helm.AddRepo("myRepo", "https://repo.example.com/", "", "cert.pem", "key.pem", "", "")
+	helm.AddRepo("myRepo", "https://repo.example.com/", "", "cert.pem", "key.pem", "", "", "")
 	expected := `Adding repo myRepo https://repo.example.com/
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --cert-file cert.pem --key-file key.pem
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --cert-file cert.pem --key-file key.pem: 
@@ -106,7 +106,7 @@ exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --cert-f
 	}
 
 	buffer.Reset()
-	helm.AddRepo("myRepo", "https://repo.example.com/", "ca.crt", "", "", "", "")
+	helm.AddRepo("myRepo", "https://repo.example.com/", "ca.crt", "", "", "", "", "")
 	expected = `Adding repo myRepo https://repo.example.com/
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --ca-file ca.crt
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --ca-file ca.crt: 
@@ -116,7 +116,7 @@ exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --ca-fil
 	}
 
 	buffer.Reset()
-	helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "", "")
+	helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "", "", "")
 	expected = `Adding repo myRepo https://repo.example.com/
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/: 
@@ -126,7 +126,25 @@ exec: helm --kube-context dev repo add myRepo https://repo.example.com/:
 	}
 
 	buffer.Reset()
-	helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "example_user", "example_password")
+	helm.AddRepo("acrRepo", "", "", "", "", "", "", "acr")
+	expected = `Adding repo acrRepo (acr)
+exec: az acr helm repo add --name acrRepo
+exec: az acr helm repo add --name acrRepo: 
+`
+	if buffer.String() != expected {
+		t.Errorf("helmexec.AddRepo()\nactual = %v\nexpect = %v", buffer.String(), expected)
+	}
+
+	buffer.Reset()
+	helm.AddRepo("otherRepo", "", "", "", "", "", "", "unknown")
+	expected = `ERROR: unknown type 'unknown' for repository otherRepo
+`
+	if buffer.String() != expected {
+		t.Errorf("helmexec.AddRepo()\nactual = %v\nexpect = %v", buffer.String(), expected)
+	}
+
+	buffer.Reset()
+	helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "example_user", "example_password", "")
 	expected = `Adding repo myRepo https://repo.example.com/
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --username example_user --password example_password
 exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --username example_user --password example_password: 
@@ -136,7 +154,7 @@ exec: helm --kube-context dev repo add myRepo https://repo.example.com/ --userna
 	}
 
 	buffer.Reset()
-	helm.AddRepo("", "https://repo.example.com/", "", "", "", "", "")
+	helm.AddRepo("", "https://repo.example.com/", "", "", "", "", "", "")
 	expected = `empty field name
 
 `
@@ -482,7 +500,7 @@ func Test_LogLevels(t *testing.T) {
 		buffer.Reset()
 		logger := NewLogger(&buffer, logLevel)
 		helm := MockExecer(logger, "")
-		helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "example_user", "example_password")
+		helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "example_user", "example_password", "")
 		if buffer.String() != expected {
 			t.Errorf("helmexec.AddRepo()\nactual = %v\nexpect = %v", buffer.String(), expected)
 		}

pkg/helmexec/helmexec.go

@@ -12,7 +12,7 @@ type Interface interface {
 	SetExtraArgs(args ...string)
 	SetHelmBinary(bin string)
 
-	AddRepo(name, repository, cafile, certfile, keyfile, username, password string) error
+	AddRepo(name, repository, cafile, certfile, keyfile, username, password string, managed string) error
 	UpdateRepo() error
 	BuildDeps(name, chart string) error
 	UpdateDeps(chart string) error