add --skip-charts for destroy for disable prepare charts (#637)

* add --skip-charts for destroy for disable prepare charts

Signed-off-by: yxxhero <aiopsclub@163.com>

* add --skip-charts for delete subcmd

Signed-off-by: yxxhero <aiopsclub@163.com>

* add docs and e2e test

Signed-off-by: yxxhero <aiopsclub@163.com>

Signed-off-by: yxxhero <aiopsclub@163.com>

cmd/delete.go

@@ -36,6 +36,7 @@ func NewDeleteCmd(globalCfg *config.GlobalImpl) *cobra.Command {
 	f.IntVar(&deleteOptions.Concurrency, "concurrency", 0, "maximum number of concurrent helm processes to run, 0 is unlimited")
 	f.BoolVar(&deleteOptions.Purge, "purge", false, "purge releases i.e. free release names and histories")
 	f.BoolVar(&deleteOptions.SkipDeps, "skip-deps", false, `skip running "helm repo update" and "helm dependency build"`)
+	f.BoolVar(&deleteOptions.SkipCharts, "skip-charts", false, "don't prepare charts when deleting releases")
 
 	return cmd
 }

cmd/destroy.go

@@ -34,6 +34,7 @@ func NewDestroyCmd(globalCfg *config.GlobalImpl) *cobra.Command {
 	f.StringVar(&globalCfg.GlobalOptions.Args, "args", "", "pass args to helm exec")
 	f.IntVar(&destroyOptions.Concurrency, "concurrency", 0, "maximum number of concurrent helm processes to run, 0 is unlimited")
 	f.BoolVar(&destroyOptions.SkipDeps, "skip-deps", false, `skip running "helm repo update" and "helm dependency build"`)
+	f.BoolVar(&destroyOptions.SkipCharts, "skip-charts", false, "don't prepare charts when destroying releases")
 
 	return cmd
 }

docs/index.md

@@ -605,6 +605,7 @@ The `helmfile destroy` sub-command uninstalls and purges all the releases define
 `helmfile --interactive destroy` instructs Helmfile to request your confirmation before actually deleting releases.
 
 `destroy` basically runs `helm uninstall --purge` on all the targeted releases. If you don't want purging, use `helmfile delete` instead.
+If `--skip-charts` flag is not set, destory would prepare all releases, by fetching charts and templating them.
 
 ### delete (DEPRECATED)
 
@@ -613,6 +614,7 @@ The `helmfile delete` sub-command deletes all the releases defined in the manife
 `helmfile --interactive delete` instructs Helmfile to request your confirmation before actually deleting releases.
 
 Note that `delete` doesn't purge releases. So `helmfile delete && helmfile sync` results in sync failed due to that releases names are not deleted but preserved for future references. If you really want to remove releases for reuse, add `--purge` flag to run it like `helmfile delete --purge`.
+If `--skip-charts` flag is not set, destory would prepare all releases, by fetching charts and templating them.
 
 ### secrets
 

pkg/app/app.go

@@ -455,36 +455,41 @@ func (a *App) Status(c StatusesConfigProvider) error {
 // TODO: Remove this function once Helmfile v0.x
 func (a *App) Delete(c DeleteConfigProvider) error {
 	return a.ForEachState(func(run *Run) (ok bool, errs []error) {
-		err := run.withPreparedCharts("delete", state.ChartPrepareOptions{
-			SkipRepos:   c.SkipDeps(),
-			SkipDeps:    c.SkipDeps(),
-			Concurrency: c.Concurrency(),
-		}, func() {
+		if !c.SkipCharts() {
+			err := run.withPreparedCharts("delete", state.ChartPrepareOptions{
+				SkipRepos:   c.SkipDeps(),
+				SkipDeps:    c.SkipDeps(),
+				Concurrency: c.Concurrency(),
+			}, func() {
+				ok, errs = a.delete(run, c.Purge(), c)
+			})
+
+			if err != nil {
+				errs = append(errs, err)
+			}
+		} else {
 			ok, errs = a.delete(run, c.Purge(), c)
-		})
-
-		if err != nil {
-			errs = append(errs, err)
 		}
-
 		return
 	}, false, SetReverse(true))
 }
 
 func (a *App) Destroy(c DestroyConfigProvider) error {
 	return a.ForEachState(func(run *Run) (ok bool, errs []error) {
-		err := run.withPreparedCharts("destroy", state.ChartPrepareOptions{
-			SkipRepos:   c.SkipDeps(),
-			SkipDeps:    c.SkipDeps(),
-			Concurrency: c.Concurrency(),
-		}, func() {
+		if !c.SkipCharts() {
+			err := run.withPreparedCharts("destroy", state.ChartPrepareOptions{
+				SkipRepos:   c.SkipDeps(),
+				SkipDeps:    c.SkipDeps(),
+				Concurrency: c.Concurrency(),
+			}, func() {
+				ok, errs = a.delete(run, true, c)
+			})
+			if err != nil {
+				errs = append(errs, err)
+			}
+		} else {
 			ok, errs = a.delete(run, true, c)
-		})
-
-		if err != nil {
-			errs = append(errs, err)
 		}
-
 		return
 	}, false, SetReverse(true))
 }

pkg/app/config.go

@@ -142,6 +142,7 @@ type DeleteConfigProvider interface {
 
 	Purge() bool
 	SkipDeps() bool
+	SkipCharts() bool
 
 	interactive
 	loggingConfig
@@ -152,6 +153,7 @@ type DestroyConfigProvider interface {
 	Args() string
 
 	SkipDeps() bool
+	SkipCharts() bool
 
 	interactive
 	loggingConfig

pkg/app/destroy_test.go

@@ -39,12 +39,17 @@ type destroyConfig struct {
 	skipDeps               bool
 	logger                 *zap.SugaredLogger
 	includeTransitiveNeeds bool
+	skipCharts             bool
 }
 
 func (d destroyConfig) Args() string {
 	return d.args
 }
 
+func (d destroyConfig) SkipCharts() bool {
+	return d.skipCharts
+}
+
 func (d destroyConfig) Interactive() bool {
 	return d.interactive
 }

pkg/config/delete.go

@@ -9,6 +9,8 @@ type DeleteOptions struct {
 	Purge bool
 	// SkipDeps is the skip deps flag
 	SkipDeps bool
+	// SkipCharts makes Delete skip `withPreparedCharts`
+	SkipCharts bool
 }
 
 // NewDeleteOptions creates a new Apply
@@ -44,3 +46,8 @@ func (c *DeleteImpl) Purge() bool {
 func (c *DeleteImpl) SkipDeps() bool {
 	return c.DeleteOptions.SkipDeps
 }
+
+// SkipCharts returns skipCharts flag
+func (c *DeleteImpl) SkipCharts() bool {
+	return c.DeleteOptions.SkipCharts
+}

pkg/config/destroy.go

@@ -6,6 +6,8 @@ type DestroyOptions struct {
 	Concurrency int
 	// SkipDeps is the skip deps flag
 	SkipDeps bool
+	// SkipCharts makes Destroy skip `withPreparedCharts`
+	SkipCharts bool
 }
 
 // NewDestroyOptions creates a new Apply
@@ -36,3 +38,8 @@ func (c *DestroyImpl) Concurrency() int {
 func (c *DestroyImpl) SkipDeps() bool {
 	return c.DestroyOptions.SkipDeps
 }
+
+// SkipCharts returns skipCharts flag
+func (c *DestroyImpl) SkipCharts() bool {
+	return c.DestroyOptions.SkipCharts
+}

test/integration/test-cases/happypath.sh

@@ -70,6 +70,19 @@ ${helm} status --namespace=${test_ns} httpbin &> /dev/null && fail "release shou
 info "Ensuring \"helmfile destroy\" doesn't fail when no releases installed"
 ${helmfile} -f ${happypath_case_input_dir}/${config_file} destroy || fail "\"helmfile delete\" shouldn't fail when there are no installed releases"
 
+info "Re-applying ${happypath_case_input_dir}/${config_file} with locked dependencies"
+${helmfile} -f ${happypath_case_input_dir}/${config_file} apply
+code=$?
+[ ${code} -eq 0 ] || fail "unexpected exit code returned by helmfile apply: ${code}"
+${helm} list --namespace=${test_ns} || fail "unable to list releases"
+
+info "Deleting release with --skip-charts"
+${helmfile} -f ${happypath_case_input_dir}/${config_file} destroy --skip-charts
+${helm} status --namespace=${test_ns} httpbin &> /dev/null && fail "release should not exist anymore after a delete"
+
+info "Ensuring \"helmfile destroy --skip-charts\" doesn't fail when no releases installed"
+${helmfile} -f ${happypath_case_input_dir}/${config_file} destroy --skip-charts || fail "\"helmfile delete\" shouldn't fail when there are no installed releases"
+
 info "Ensuring \"helmfile template\" output does contain only YAML docs"
 (${helmfile} -f ${happypath_case_input_dir}/${config_file} template | kubectl apply -f -) || fail "\"helmfile template | kubectl apply -f -\" shouldn't fail"