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GrpcServiceCallableFactoryClassComposer.java
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GrpcServiceCallableFactoryClassComposer.java
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// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.api.generator.gapic.composer.grpc;
import com.google.api.generator.engine.ast.ConcreteReference;
import com.google.api.generator.engine.ast.MethodDefinition;
import com.google.api.generator.engine.ast.TypeNode;
import com.google.api.generator.gapic.composer.common.AbstractServiceCallableFactoryClassComposer;
import com.google.api.generator.gapic.composer.store.TypeStore;
import com.google.longrunning.Operation;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;
public class GrpcServiceCallableFactoryClassComposer
extends AbstractServiceCallableFactoryClassComposer {
private static final GrpcServiceCallableFactoryClassComposer INSTANCE =
new GrpcServiceCallableFactoryClassComposer();
private static final TypeNode OPERATION_TYPE =
TypeNode.withReference(ConcreteReference.withClazz(Operation.class));
protected GrpcServiceCallableFactoryClassComposer() {
super(GrpcContext.instance());
}
public static GrpcServiceCallableFactoryClassComposer instance() {
return INSTANCE;
}
@Override
protected List<TypeNode> createClassImplements(TypeStore typeStore) {
return Arrays.asList(getTransportContext().stubCallableFactoryType());
}
protected List<MethodDefinition> createClassMethods(
TypeStore typeStore, String operationService) {
List<MethodDefinition> classMethods =
new ArrayList<>(super.createClassMethods(typeStore, operationService));
classMethods.addAll(
Arrays.asList(
createBidiStreamingCallableMethod(typeStore),
createServerStreamingCallableMethod(typeStore),
createClientStreamingCallableMethod(typeStore)));
return classMethods;
}
protected MethodDefinition createUnaryCallableMethod(TypeStore typeStore) {
String methodVariantName = "Unary";
String requestTemplateName = "RequestT";
String responseTemplateName = "ResponseT";
List<String> methodTemplateNames = Arrays.asList(requestTemplateName, responseTemplateName);
return createGenericCallableMethod(
typeStore,
/*methodTemplateNames=*/ methodTemplateNames,
/*returnCallableKindName=*/ methodVariantName,
/*returnCallableTemplateNames=*/ methodTemplateNames,
/*methodVariantName=*/ methodVariantName,
/*grpcCallSettingsTemplateObjects=*/ methodTemplateNames.stream()
.map(n -> (Object) n)
.collect(Collectors.toList()),
/*callSettingsVariantName=*/ methodVariantName,
/*callSettingsTemplateObjects=*/ methodTemplateNames.stream()
.map(n -> (Object) n)
.collect(Collectors.toList()));
}
protected MethodDefinition createPagedCallableMethod(TypeStore typeStore) {
String methodVariantName = "Paged";
String requestTemplateName = "RequestT";
String pagedResponseTemplateName = "PagedListResponseT";
String responseTemplateName = "ResponseT";
List<String> methodTemplateNames =
Arrays.asList(requestTemplateName, responseTemplateName, pagedResponseTemplateName);
return createGenericCallableMethod(
typeStore,
/*methodTemplateNames=*/ methodTemplateNames,
/*returnCallableKindName=*/ "Unary",
/*returnCallableTemplateNames=*/ Arrays.asList(
requestTemplateName, pagedResponseTemplateName),
/*methodVariantName=*/ methodVariantName,
/*grpcCallSettingsTemplateObjects=*/ Arrays.asList(
requestTemplateName, responseTemplateName),
/*callSettingsVariantName=*/ methodVariantName,
/*callSettingsTemplateObjects=*/ methodTemplateNames.stream()
.map(n -> (Object) n)
.collect(Collectors.toList()));
}
@Override
protected MethodDefinition createOperationCallableMethod(
TypeStore typeStore, String operationService) {
String methodVariantName = "Operation";
String requestTemplateName = "RequestT";
String responseTemplateName = "ResponseT";
List<String> methodTemplateNames =
Arrays.asList(requestTemplateName, responseTemplateName, "MetadataT");
return createGenericCallableMethod(
typeStore,
/*methodTemplateNames=*/ methodTemplateNames,
/*returnCallableKindName=*/ methodVariantName,
/*returnCallableTemplateNames=*/ methodTemplateNames,
/*methodVariantName=*/ methodVariantName,
/*grpcCallSettingsTemplateObjects=*/ Arrays.asList(requestTemplateName, OPERATION_TYPE),
/*callSettingsVariantName=*/ methodVariantName,
/*callSettingsTemplateObjects=*/ methodTemplateNames.stream()
.map(n -> (Object) n)
.collect(Collectors.toList()));
}
private MethodDefinition createBidiStreamingCallableMethod(TypeStore typeStore) {
String methodVariantName = "BidiStreaming";
String requestTemplateName = "RequestT";
String responseTemplateName = "ResponseT";
List<String> methodTemplateNames = Arrays.asList(requestTemplateName, responseTemplateName);
return createGenericCallableMethod(
typeStore,
/*methodTemplateNames=*/ methodTemplateNames,
/*returnCallableKindName=*/ methodVariantName,
/*returnCallableTemplateNames=*/ methodTemplateNames,
/*methodVariantName=*/ methodVariantName,
/*grpcCallSettingsTemplateObjects=*/ methodTemplateNames.stream()
.map(n -> (Object) n)
.collect(Collectors.toList()),
/*callSettingsVariantName=*/ "Streaming",
/*callSettingsTemplateObjects=*/ methodTemplateNames.stream()
.map(n -> (Object) n)
.collect(Collectors.toList()));
}
private MethodDefinition createServerStreamingCallableMethod(TypeStore typeStore) {
String methodVariantName = "ServerStreaming";
String requestTemplateName = "RequestT";
String responseTemplateName = "ResponseT";
List<String> methodTemplateNames = Arrays.asList(requestTemplateName, responseTemplateName);
return createGenericCallableMethod(
typeStore,
/*methodTemplateNames=*/ methodTemplateNames,
/*returnCallableKindName=*/ methodVariantName,
/*returnCallableTemplateNames=*/ methodTemplateNames,
/*methodVariantName=*/ methodVariantName,
/*grpcCallSettingsTemplateObjects=*/ methodTemplateNames.stream()
.map(n -> (Object) n)
.collect(Collectors.toList()),
/*callSettingsVariantName=*/ methodVariantName,
/*callSettingsTemplateObjects=*/ methodTemplateNames.stream()
.map(n -> (Object) n)
.collect(Collectors.toList()));
}
private MethodDefinition createClientStreamingCallableMethod(TypeStore typeStore) {
String methodVariantName = "ClientStreaming";
String requestTemplateName = "RequestT";
String responseTemplateName = "ResponseT";
List<String> methodTemplateNames = Arrays.asList(requestTemplateName, responseTemplateName);
return createGenericCallableMethod(
typeStore,
/*methodTemplateNames=*/ methodTemplateNames,
/*returnCallableKindName=*/ methodVariantName,
/*returnCallableTemplateNames=*/ methodTemplateNames,
/*methodVariantName=*/ methodVariantName,
/*grpcCallSettingsTemplateObjects=*/ methodTemplateNames.stream()
.map(n -> (Object) n)
.collect(Collectors.toList()),
/*callSettingsVariantName=*/ "Streaming",
/*callSettingsTemplateObjects=*/ methodTemplateNames.stream()
.map(n -> (Object) n)
.collect(Collectors.toList()));
}
}