connect: enable configuring sidecar_task.name

Before, the submitted jobspec for sidecar_task would pass
through 2 key validation steps - once for the subset specific
to connect sidecar task definitions, and once again for the set
of normal task definition where the task would actually get
unmarshalled.

The valid keys for the normal task definition did not include
"name", which is supposed to be configurable for the sidecar
task. To fix this, just eliminate the double validation step,
and instead pass-in the correct set of keys to validate against
to the one generic task parser.

Fixes #7680

jobspec/parse_service.go

@@ -263,32 +263,7 @@ func parseSidecarService(o *ast.ObjectItem) (*api.ConsulSidecarService, error) {
 }
 
 func parseSidecarTask(item *ast.ObjectItem) (*api.SidecarTask, error) {
-	// We need this later
-	var listVal *ast.ObjectList
-	if ot, ok := item.Val.(*ast.ObjectType); ok {
-		listVal = ot.List
-	} else {
-		return nil, fmt.Errorf("should be an object")
-	}
-
-	// Check for invalid keys
-	valid := []string{
-		"config",
-		"driver",
-		"env",
-		"kill_timeout",
-		"logs",
-		"meta",
-		"resources",
-		"shutdown_delay",
-		"user",
-		"kill_signal",
-	}
-	if err := helper.CheckHCLKeys(listVal, valid); err != nil {
-		return nil, err
-	}
-
-	task, err := parseTask(item)
+	task, err := parseTask(item, sidecarTaskKeys)
 	if err != nil {
 		return nil, err
 	}

jobspec/parse_task.go

@@ -12,6 +12,48 @@ import (
 	"github.com/mitchellh/mapstructure"
 )
 
+var (
+	normalTaskKeys = []string{
+		"artifact",
+		"config",
+		"constraint",
+		"affinity",
+		"dispatch_payload",
+		"lifecycle",
+		"driver",
+		"env",
+		"kill_timeout",
+		"leader",
+		"logs",
+		"meta",
+		"resources",
+		"restart",
+		"service",
+		"shutdown_delay",
+		"template",
+		"user",
+		"vault",
+		"kill_signal",
+		"kind",
+		"volume_mount",
+		"csi_plugin",
+	}
+
+	sidecarTaskKeys = []string{
+		"name",
+		"driver",
+		"user",
+		"config",
+		"env",
+		"resources",
+		"meta",
+		"logs",
+		"kill_timeout",
+		"shutdown_delay",
+		"kill_signal",
+	}
+)
+
 func parseTasks(result *[]*api.Task, list *ast.ObjectList) error {
 	list = list.Children()
 	if len(list.Items) == 0 {
@@ -29,7 +71,7 @@ func parseTasks(result *[]*api.Task, list *ast.ObjectList) error {
 		}
 		seen[n] = struct{}{}
 
-		t, err := parseTask(item)
+		t, err := parseTask(item, normalTaskKeys)
 		if err != nil {
 			return multierror.Prefix(err, fmt.Sprintf("'%s',", n))
 		}
@@ -42,7 +84,7 @@ func parseTasks(result *[]*api.Task, list *ast.ObjectList) error {
 	return nil
 }
 
-func parseTask(item *ast.ObjectItem) (*api.Task, error) {
+func parseTask(item *ast.ObjectItem, keys []string) (*api.Task, error) {
 	// We need this later
 	var listVal *ast.ObjectList
 	if ot, ok := item.Val.(*ast.ObjectType); ok {
@@ -52,32 +94,7 @@ func parseTask(item *ast.ObjectItem) (*api.Task, error) {
 	}
 
 	// Check for invalid keys
-	valid := []string{
-		"artifact",
-		"config",
-		"constraint",
-		"affinity",
-		"dispatch_payload",
-		"lifecycle",
-		"driver",
-		"env",
-		"kill_timeout",
-		"leader",
-		"logs",
-		"meta",
-		"resources",
-		"restart",
-		"service",
-		"shutdown_delay",
-		"template",
-		"user",
-		"vault",
-		"kill_signal",
-		"kind",
-		"volume_mount",
-		"csi_plugin",
-	}
-	if err := helper.CheckHCLKeys(listVal, valid); err != nil {
+	if err := helper.CheckHCLKeys(listVal, keys); err != nil {
 		return nil, err
 	}
 

jobspec/parse_test.go

@@ -894,6 +894,28 @@ func TestParse(t *testing.T) {
 			},
 			false,
 		},
+		{
+			"service-connect-sidecar_task-name.hcl",
+			&api.Job{
+				ID:   helper.StringToPtr("sidecar_task_name"),
+				Name: helper.StringToPtr("sidecar_task_name"),
+				Type: helper.StringToPtr("service"),
+				TaskGroups: []*api.TaskGroup{{
+					Name: helper.StringToPtr("group"),
+					Services: []*api.Service{{
+						Name: "example",
+						Connect: &api.ConsulConnect{
+							Native:         false,
+							SidecarService: &api.ConsulSidecarService{},
+							SidecarTask: &api.SidecarTask{
+								Name: "my-sidecar",
+							},
+						},
+					}},
+				}},
+			},
+			false,
+		},
 		{
 			"reschedule-job.hcl",
 			&api.Job{

jobspec/test-fixtures/service-connect-sidecar_task-name.hcl

@@ -0,0 +1,15 @@
+job "sidecar_task_name" {
+  type = "service"
+
+  group "group" {
+    service {
+      name = "example"
+      connect {
+        sidecar_service {}
+        sidecar_task {
+          name = "my-sidecar"
+        }
+      }
+    }
+  }
+}