VAULT-8519 fix spurious "unknown or unsupported fields" warnings for JSON config

changelog/17660.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+core: Fixes spurious warnings being emitted relating to "unknown or unsupported fields" for JSON config
+```

command/server/config_test.go

@@ -56,6 +56,14 @@ func TestUnknownFieldValidation(t *testing.T) {
 	testUnknownFieldValidation(t)
 }
 
+func TestUnknownFieldValidationJson(t *testing.T) {
+	testUnknownFieldValidationJson(t)
+}
+
+func TestUnknownFieldValidationHcl(t *testing.T) {
+	testUnknownFieldValidationHcl(t)
+}
+
 func TestUnknownFieldValidationListenerAndStorage(t *testing.T) {
 	testUnknownFieldValidationStorageAndListener(t)
 }

command/server/config_test_helpers.go

@@ -534,6 +534,37 @@ func testUnknownFieldValidation(t *testing.T) {
 	}
 }
 
+// testUnknownFieldValidationJson tests that this valid json config does not result in
+// errors. Prior to VAULT-8519, it reported errors even with a valid config that was
+// parsed properly.
+func testUnknownFieldValidationJson(t *testing.T) {
+	config, err := LoadConfigFile("./test-fixtures/config_small.json")
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	errors := config.Validate("./test-fixtures/config_small.json")
+	if errors != nil {
+		t.Fatal(errors)
+	}
+}
+
+// testUnknownFieldValidationHcl tests that this valid hcl config does not result in
+// errors. Prior to VAULT-8519, the json version of this config reported errors even
+// with a valid config that was parsed properly.
+// In short, this ensures the same for HCL as we test in testUnknownFieldValidationJson
+func testUnknownFieldValidationHcl(t *testing.T) {
+	config, err := LoadConfigFile("./test-fixtures/config_small.hcl")
+	if err != nil {
+		t.Fatalf("err: %s", err)
+	}
+
+	errors := config.Validate("./test-fixtures/config_small.hcl")
+	if errors != nil {
+		t.Fatal(errors)
+	}
+}
+
 func testLoadConfigFile_json(t *testing.T) {
 	config, err := LoadConfigFile("./test-fixtures/config.hcl.json")
 	if err != nil {

command/server/test-fixtures/config_small.hcl

@@ -0,0 +1,15 @@
+storage "raft" {
+  path = "/path/to/raft"
+  node_id = "raft_node_1"
+}
+listener "tcp" {
+  address       = "127.0.0.1:8200"
+  tls_cert_file = "/path/to/cert.pem"
+  tls_key_file  = "/path/to/key.key"
+}
+seal "awskms" {
+  kms_key_id       = "alias/kms-unseal-key"
+}
+service_registration "consul" {
+  address       = "127.0.0.1:8500"
+}

command/server/test-fixtures/config_small.json

@@ -0,0 +1,31 @@
+{
+    "listener": {
+        "tcp": {
+            "address": "0.0.0.0:8200",
+            "tls_cert_file": "/path/to/cert.pem",
+            "tls_key_file": "/path/to/key.key"
+        }
+    },
+
+    "seal": {
+        "awskms": {
+            "kms_key_id": "alias/kms-unseal-key"
+        }
+    },
+
+    "storage": {
+        "raft": {
+            "path": "/path/to/raft",
+            "node_id": "raft_node_1"
+        }
+    },
+
+    "cluster_addr":  "http://127.0.0.1:8201",
+    "api_addr": "http://127.0.0.1:8200",
+
+    "service_registration": {
+        "consul": {
+            "address": "127.0.0.1:8500"
+        }
+    }
+}

go.mod

@@ -97,7 +97,7 @@ require (
 	github.com/hashicorp/go-uuid v1.0.3
 	github.com/hashicorp/go-version v1.6.0
 	github.com/hashicorp/golang-lru v0.5.4
-	github.com/hashicorp/hcl v1.0.1-vault-3
+	github.com/hashicorp/hcl v1.0.1-vault-5
 	github.com/hashicorp/hcp-sdk-go v0.22.0
 	github.com/hashicorp/nomad/api v0.0.0-20220707195938-75f4c2237b28
 	github.com/hashicorp/raft v1.3.10

go.sum

@@ -1066,8 +1066,8 @@ github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ
 github.com/hashicorp/golang-lru v0.5.4 h1:YDjusn29QI/Das2iO9M0BHnIbxPeyuCHsjMW+lJfyTc=
 github.com/hashicorp/golang-lru v0.5.4/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
-github.com/hashicorp/hcl v1.0.1-vault-3 h1:V95v5KSTu6DB5huDSKiq4uAfILEuNigK/+qPET6H/Mg=
-github.com/hashicorp/hcl v1.0.1-vault-3/go.mod h1:XYhtn6ijBSAj6n4YqAaf7RBPS4I06AItNorpy+MoQNM=
+github.com/hashicorp/hcl v1.0.1-vault-5 h1:kI3hhbbyzr4dldA8UdTb7ZlVVlI2DACdCfz31RPDgJM=
+github.com/hashicorp/hcl v1.0.1-vault-5/go.mod h1:XYhtn6ijBSAj6n4YqAaf7RBPS4I06AItNorpy+MoQNM=
 github.com/hashicorp/hcp-sdk-go v0.22.0 h1:LWkLOkJFYWSojBM3IkwvYK6nrwrL+p4Fw8zEaoCQG10=
 github.com/hashicorp/hcp-sdk-go v0.22.0/go.mod h1:mM3nYdVHuv2X2tv88MGVKRf/o2k3zF8jUZSMkwICQ28=
 github.com/hashicorp/jsonapi v0.0.0-20210826224640-ee7dae0fb22d h1:9ARUJJ1VVynB176G1HCwleORqCaXm/Vx0uUi0dL26I0=