feat: Opt-out dep-builds and repo-updates (#463)

* Improve code organization

To make sure it is still readable after upcoming changes to helmfile

* feat: `helmfile deps` to update dependencies of all the local charts

Resolves #450

* feat: helmfile updates repos and build deps by default

But not update deps. Use `helmfile deps` to update deps, and provide `--skip-deps` to skip updating repos and builds deps in sync/diff/apply/template

Resolves #415

* Improve integration test coverage

helmexec/exec.go

@@ -89,6 +89,13 @@ func (helm *execer) UpdateDeps(chart string) error {
 	return err
 }
 
+func (helm *execer) BuildDeps(chart string) error {
+	helm.logger.Infof("Building dependency %v", chart)
+	out, err := helm.exec("dependency", "build", chart)
+	helm.write(out)
+	return err
+}
+
 func (helm *execer) SyncRelease(name, chart string, flags ...string) error {
 	helm.logger.Infof("Upgrading %v", chart)
 	out, err := helm.exec(append([]string{"upgrade", "--install", "--reset-values", name, chart}, flags...)...)

helmexec/exec_test.go

@@ -159,6 +159,29 @@ exec: helm dependency update ./chart/foo --verify --kube-context dev
 	}
 }
 
+func Test_BuildDeps(t *testing.T) {
+	var buffer bytes.Buffer
+	logger := NewLogger(&buffer, "debug")
+	helm := MockExecer(logger, "dev")
+	helm.BuildDeps("./chart/foo")
+	expected := `Building dependency ./chart/foo
+exec: helm dependency build ./chart/foo --kube-context dev
+`
+	if buffer.String() != expected {
+		t.Errorf("helmexec.BuildDeps()\nactual = %v\nexpect = %v", buffer.String(), expected)
+	}
+
+	buffer.Reset()
+	helm.SetExtraArgs("--verify")
+	helm.BuildDeps("./chart/foo")
+	expected = `Building dependency ./chart/foo
+exec: helm dependency build ./chart/foo --verify --kube-context dev
+`
+	if buffer.String() != expected {
+		t.Errorf("helmexec.BuildDeps()\nactual = %v\nexpect = %v", buffer.String(), expected)
+	}
+}
+
 func Test_DecryptSecret(t *testing.T) {
 	var buffer bytes.Buffer
 	logger := NewLogger(&buffer, "debug")

helmexec/helmexec.go

@@ -7,6 +7,7 @@ type Interface interface {
 
 	AddRepo(name, repository, certfile, keyfile, username, password string) error
 	UpdateRepo() error
+	BuildDeps(chart string) error
 	UpdateDeps(chart string) error
 	SyncRelease(name, chart string, flags ...string) error
 	DiffRelease(name, chart string, flags ...string) error