fix: Remove HttpMethod compile time dependency from genrated HttpJson…

… stubs (#1004)

src/main/java/com/google/api/generator/gapic/composer/rest/HttpJsonServiceStubClassComposer.java

@@ -14,7 +14,6 @@
 
 package com.google.api.generator.gapic.composer.rest;
 
-import com.google.api.client.http.HttpMethods;
 import com.google.api.core.InternalApi;
 import com.google.api.gax.httpjson.ApiMethodDescriptor;
 import com.google.api.gax.httpjson.ApiMethodDescriptor.MethodType;
@@ -991,14 +990,9 @@ private Expr createFieldsExtractorClassInstance(
   }
 
   private List<Expr> getHttpMethodTypeExpr(Method protoMethod) {
-    EnumRefExpr expr =
-        EnumRefExpr.builder()
-            .setName(protoMethod.httpBindings().httpVerb().toString())
-            .setType(
-                TypeNode.withReference(
-                    ConcreteReference.builder().setClazz(HttpMethods.class).build()))
-            .build();
-    return Collections.singletonList(expr);
+    return Collections.singletonList(
+        ValueExpr.withValue(
+            StringObjectValue.withValue(protoMethod.httpBindings().httpVerb().toString())));
   }
 
   private List<Expr> getMethodTypeExpr(Method protoMethod) {

src/test/java/com/google/api/generator/gapic/composer/grpcrest/goldens/HttpJsonEchoStub.golden

@@ -3,7 +3,6 @@ package com.google.showcase.grpcrest.v1beta1.stub;
 import static com.google.showcase.grpcrest.v1beta1.EchoClient.PagedExpandPagedResponse;
 import static com.google.showcase.grpcrest.v1beta1.EchoClient.SimplePagedExpandPagedResponse;
 
-import com.google.api.client.http.HttpMethods;
 import com.google.api.core.BetaApi;
 import com.google.api.core.InternalApi;
 import com.google.api.gax.core.BackgroundResource;
@@ -60,7 +59,7 @@ public class HttpJsonEchoStub extends EchoStub {
   private static final ApiMethodDescriptor<EchoRequest, EchoResponse> echoMethodDescriptor =
       ApiMethodDescriptor.<EchoRequest, EchoResponse>newBuilder()
           .setFullMethodName("google.showcase.grpcrest.v1beta1.Echo/Echo")
-          .setHttpMethod(HttpMethods.POST)
+          .setHttpMethod("POST")
           .setType(ApiMethodDescriptor.MethodType.UNARY)
           .setRequestFormatter(
               ProtoMessageRequestFormatter.<EchoRequest>newBuilder()
@@ -91,7 +90,7 @@ public class HttpJsonEchoStub extends EchoStub {
   private static final ApiMethodDescriptor<ExpandRequest, EchoResponse> expandMethodDescriptor =
       ApiMethodDescriptor.<ExpandRequest, EchoResponse>newBuilder()
           .setFullMethodName("google.showcase.grpcrest.v1beta1.Echo/Expand")
-          .setHttpMethod(HttpMethods.POST)
+          .setHttpMethod("POST")
           .setType(ApiMethodDescriptor.MethodType.SERVER_STREAMING)
           .setRequestFormatter(
               ProtoMessageRequestFormatter.<ExpandRequest>newBuilder()
@@ -126,7 +125,7 @@ public class HttpJsonEchoStub extends EchoStub {
       pagedExpandMethodDescriptor =
           ApiMethodDescriptor.<PagedExpandRequest, PagedExpandResponse>newBuilder()
               .setFullMethodName("google.showcase.grpcrest.v1beta1.Echo/PagedExpand")
-              .setHttpMethod(HttpMethods.POST)
+              .setHttpMethod("POST")
               .setType(ApiMethodDescriptor.MethodType.UNARY)
               .setRequestFormatter(
                   ProtoMessageRequestFormatter.<PagedExpandRequest>newBuilder()
@@ -160,7 +159,7 @@ public class HttpJsonEchoStub extends EchoStub {
       simplePagedExpandMethodDescriptor =
           ApiMethodDescriptor.<PagedExpandRequest, PagedExpandResponse>newBuilder()
               .setFullMethodName("google.showcase.grpcrest.v1beta1.Echo/SimplePagedExpand")
-              .setHttpMethod(HttpMethods.POST)
+              .setHttpMethod("POST")
               .setType(ApiMethodDescriptor.MethodType.UNARY)
               .setRequestFormatter(
                   ProtoMessageRequestFormatter.<PagedExpandRequest>newBuilder()
@@ -193,7 +192,7 @@ public class HttpJsonEchoStub extends EchoStub {
   private static final ApiMethodDescriptor<WaitRequest, Operation> waitMethodDescriptor =
       ApiMethodDescriptor.<WaitRequest, Operation>newBuilder()
           .setFullMethodName("google.showcase.grpcrest.v1beta1.Echo/Wait")
-          .setHttpMethod(HttpMethods.POST)
+          .setHttpMethod("POST")
           .setType(ApiMethodDescriptor.MethodType.UNARY)
           .setRequestFormatter(
               ProtoMessageRequestFormatter.<WaitRequest>newBuilder()
@@ -227,7 +226,7 @@ public class HttpJsonEchoStub extends EchoStub {
   private static final ApiMethodDescriptor<BlockRequest, BlockResponse> blockMethodDescriptor =
       ApiMethodDescriptor.<BlockRequest, BlockResponse>newBuilder()
           .setFullMethodName("google.showcase.grpcrest.v1beta1.Echo/Block")
-          .setHttpMethod(HttpMethods.POST)
+          .setHttpMethod("POST")
           .setType(ApiMethodDescriptor.MethodType.UNARY)
           .setRequestFormatter(
               ProtoMessageRequestFormatter.<BlockRequest>newBuilder()
@@ -258,7 +257,7 @@ public class HttpJsonEchoStub extends EchoStub {
   private static final ApiMethodDescriptor<EchoRequest, Object> collideNameMethodDescriptor =
       ApiMethodDescriptor.<EchoRequest, Object>newBuilder()
           .setFullMethodName("google.showcase.grpcrest.v1beta1.Echo/CollideName")
-          .setHttpMethod(HttpMethods.POST)
+          .setHttpMethod("POST")
           .setType(ApiMethodDescriptor.MethodType.UNARY)
           .setRequestFormatter(
               ProtoMessageRequestFormatter.<EchoRequest>newBuilder()
@@ -289,7 +288,7 @@ public class HttpJsonEchoStub extends EchoStub {
   private static final ApiMethodDescriptor<EchoRequest, Object> nestedBindingMethodDescriptor =
       ApiMethodDescriptor.<EchoRequest, Object>newBuilder()
           .setFullMethodName("google.showcase.grpcrest.v1beta1.Echo/NestedBinding")
-          .setHttpMethod(HttpMethods.POST)
+          .setHttpMethod("POST")
           .setType(ApiMethodDescriptor.MethodType.UNARY)
           .setRequestFormatter(
               ProtoMessageRequestFormatter.<EchoRequest>newBuilder()

src/test/java/com/google/api/generator/gapic/composer/rest/goldens/HttpJsonComplianceStub.golden

@@ -1,6 +1,5 @@
 package com.google.showcase.v1beta1.stub;
 
-import com.google.api.client.http.HttpMethods;
 import com.google.api.core.BetaApi;
 import com.google.api.core.InternalApi;
 import com.google.api.gax.core.BackgroundResource;
@@ -39,7 +38,7 @@ public class HttpJsonComplianceStub extends ComplianceStub {
       repeatDataBodyMethodDescriptor =
           ApiMethodDescriptor.<RepeatRequest, RepeatResponse>newBuilder()
               .setFullMethodName("google.showcase.v1beta1.Compliance/RepeatDataBody")
-              .setHttpMethod(HttpMethods.POST)
+              .setHttpMethod("POST")
               .setType(ApiMethodDescriptor.MethodType.UNARY)
               .setRequestFormatter(
                   ProtoMessageRequestFormatter.<RepeatRequest>newBuilder()
@@ -73,7 +72,7 @@ public class HttpJsonComplianceStub extends ComplianceStub {
       repeatDataBodyInfoMethodDescriptor =
           ApiMethodDescriptor.<RepeatRequest, RepeatResponse>newBuilder()
               .setFullMethodName("google.showcase.v1beta1.Compliance/RepeatDataBodyInfo")
-              .setHttpMethod(HttpMethods.POST)
+              .setHttpMethod("POST")
               .setType(ApiMethodDescriptor.MethodType.UNARY)
               .setRequestFormatter(
                   ProtoMessageRequestFormatter.<RepeatRequest>newBuilder()
@@ -109,7 +108,7 @@ public class HttpJsonComplianceStub extends ComplianceStub {
       repeatDataQueryMethodDescriptor =
           ApiMethodDescriptor.<RepeatRequest, RepeatResponse>newBuilder()
               .setFullMethodName("google.showcase.v1beta1.Compliance/RepeatDataQuery")
-              .setHttpMethod(HttpMethods.GET)
+              .setHttpMethod("GET")
               .setType(ApiMethodDescriptor.MethodType.UNARY)
               .setRequestFormatter(
                   ProtoMessageRequestFormatter.<RepeatRequest>newBuilder()
@@ -145,7 +144,7 @@ public class HttpJsonComplianceStub extends ComplianceStub {
       repeatDataSimplePathMethodDescriptor =
           ApiMethodDescriptor.<RepeatRequest, RepeatResponse>newBuilder()
               .setFullMethodName("google.showcase.v1beta1.Compliance/RepeatDataSimplePath")
-              .setHttpMethod(HttpMethods.GET)
+              .setHttpMethod("GET")
               .setType(ApiMethodDescriptor.MethodType.UNARY)
               .setRequestFormatter(
                   ProtoMessageRequestFormatter.<RepeatRequest>newBuilder()
@@ -193,7 +192,7 @@ public class HttpJsonComplianceStub extends ComplianceStub {
       repeatDataPathResourceMethodDescriptor =
           ApiMethodDescriptor.<RepeatRequest, RepeatResponse>newBuilder()
               .setFullMethodName("google.showcase.v1beta1.Compliance/RepeatDataPathResource")
-              .setHttpMethod(HttpMethods.GET)
+              .setHttpMethod("GET")
               .setType(ApiMethodDescriptor.MethodType.UNARY)
               .setRequestFormatter(
                   ProtoMessageRequestFormatter.<RepeatRequest>newBuilder()
@@ -240,7 +239,7 @@ public class HttpJsonComplianceStub extends ComplianceStub {
           ApiMethodDescriptor.<RepeatRequest, RepeatResponse>newBuilder()
               .setFullMethodName(
                   "google.showcase.v1beta1.Compliance/RepeatDataPathTrailingResource")
-              .setHttpMethod(HttpMethods.GET)
+              .setHttpMethod("GET")
               .setType(ApiMethodDescriptor.MethodType.UNARY)
               .setRequestFormatter(
                   ProtoMessageRequestFormatter.<RepeatRequest>newBuilder()

test/integration/goldens/compute/src/com/google/cloud/compute/v1small/stub/HttpJsonAddressesStub.java

@@ -19,7 +19,6 @@
 import static com.google.cloud.compute.v1small.AddressesClient.AggregatedListPagedResponse;
 import static com.google.cloud.compute.v1small.AddressesClient.ListPagedResponse;
 
-import com.google.api.client.http.HttpMethods;
 import com.google.api.core.BetaApi;
 import com.google.api.core.InternalApi;
 import com.google.api.gax.core.BackgroundResource;
@@ -68,7 +67,7 @@ public class HttpJsonAddressesStub extends AddressesStub {
       aggregatedListMethodDescriptor =
           ApiMethodDescriptor.<AggregatedListAddressesRequest, AddressAggregatedList>newBuilder()
               .setFullMethodName("google.cloud.compute.v1small.Addresses/AggregatedList")
-              .setHttpMethod(HttpMethods.GET)
+              .setHttpMethod("GET")
               .setType(ApiMethodDescriptor.MethodType.UNARY)
               .setRequestFormatter(
                   ProtoMessageRequestFormatter.<AggregatedListAddressesRequest>newBuilder()
@@ -117,7 +116,7 @@ public class HttpJsonAddressesStub extends AddressesStub {
   private static final ApiMethodDescriptor<DeleteAddressRequest, Operation> deleteMethodDescriptor =
       ApiMethodDescriptor.<DeleteAddressRequest, Operation>newBuilder()
           .setFullMethodName("google.cloud.compute.v1small.Addresses/Delete")
-          .setHttpMethod(HttpMethods.DELETE)
+          .setHttpMethod("DELETE")
           .setType(ApiMethodDescriptor.MethodType.UNARY)
           .setRequestFormatter(
               ProtoMessageRequestFormatter.<DeleteAddressRequest>newBuilder()
@@ -167,7 +166,7 @@ public class HttpJsonAddressesStub extends AddressesStub {
   private static final ApiMethodDescriptor<InsertAddressRequest, Operation> insertMethodDescriptor =
       ApiMethodDescriptor.<InsertAddressRequest, Operation>newBuilder()
           .setFullMethodName("google.cloud.compute.v1small.Addresses/Insert")
-          .setHttpMethod(HttpMethods.POST)
+          .setHttpMethod("POST")
           .setType(ApiMethodDescriptor.MethodType.UNARY)
           .setRequestFormatter(
               ProtoMessageRequestFormatter.<InsertAddressRequest>newBuilder()
@@ -219,7 +218,7 @@ public class HttpJsonAddressesStub extends AddressesStub {
   private static final ApiMethodDescriptor<ListAddressesRequest, AddressList> listMethodDescriptor =
       ApiMethodDescriptor.<ListAddressesRequest, AddressList>newBuilder()
           .setFullMethodName("google.cloud.compute.v1small.Addresses/List")
-          .setHttpMethod(HttpMethods.GET)
+          .setHttpMethod("GET")
           .setType(ApiMethodDescriptor.MethodType.UNARY)
           .setRequestFormatter(
               ProtoMessageRequestFormatter.<ListAddressesRequest>newBuilder()

test/integration/goldens/compute/src/com/google/cloud/compute/v1small/stub/HttpJsonRegionOperationsStub.java

@@ -16,7 +16,6 @@
 
 package com.google.cloud.compute.v1small.stub;
 
-import com.google.api.client.http.HttpMethods;
 import com.google.api.core.BetaApi;
 import com.google.api.core.InternalApi;
 import com.google.api.gax.core.BackgroundResource;
@@ -62,7 +61,7 @@ public class HttpJsonRegionOperationsStub extends RegionOperationsStub {
       getMethodDescriptor =
           ApiMethodDescriptor.<GetRegionOperationRequest, Operation>newBuilder()
               .setFullMethodName("google.cloud.compute.v1small.RegionOperations/Get")
-              .setHttpMethod(HttpMethods.GET)
+              .setHttpMethod("GET")
               .setType(ApiMethodDescriptor.MethodType.UNARY)
               .setRequestFormatter(
                   ProtoMessageRequestFormatter.<GetRegionOperationRequest>newBuilder()
@@ -117,7 +116,7 @@ public class HttpJsonRegionOperationsStub extends RegionOperationsStub {
       waitMethodDescriptor =
           ApiMethodDescriptor.<WaitRegionOperationRequest, Operation>newBuilder()
               .setFullMethodName("google.cloud.compute.v1small.RegionOperations/Wait")
-              .setHttpMethod(HttpMethods.POST)
+              .setHttpMethod("POST")
               .setType(ApiMethodDescriptor.MethodType.UNARY)
               .setRequestFormatter(
                   ProtoMessageRequestFormatter.<WaitRegionOperationRequest>newBuilder()