use of com.google.api.generator.engine.ast.MethodDefinition in project gapic-generator-java by googleapis.
the class AbstractServiceStubSettingsClassComposer method createBuilderHelperMethods.
protected List<MethodDefinition> createBuilderHelperMethods(Service service, TypeStore typeStore) {
List<MethodDefinition> javaMethods = new ArrayList<>();
final TypeNode builderReturnType = typeStore.get(NESTED_BUILDER_CLASS_NAME);
// Create the newBuilder(ClientContext) method.
Function<Expr, NewObjectExpr> newBuilderFn = argExpr -> NewObjectExpr.builder().setType(builderReturnType).setArguments(argExpr).build();
VariableExpr clientContextVarExpr = VariableExpr.withVariable(Variable.builder().setType(FIXED_TYPESTORE.get("ClientContext")).setName("clientContext").build());
javaMethods.add(MethodDefinition.builder().setHeaderCommentStatements(SettingsCommentComposer.NEW_BUILDER_METHOD_COMMENT).setScope(ScopeNode.PUBLIC).setIsStatic(true).setReturnType(builderReturnType).setName("newBuilder").setArguments(clientContextVarExpr.toBuilder().setIsDecl(true).build()).setReturnExpr(newBuilderFn.apply(clientContextVarExpr)).build());
// Create the toBuilder method.
javaMethods.add(MethodDefinition.builder().setHeaderCommentStatements(SettingsCommentComposer.TO_BUILDER_METHOD_COMMENT).setScope(ScopeNode.PUBLIC).setReturnType(builderReturnType).setName("toBuilder").setReturnExpr(newBuilderFn.apply(ValueExpr.withValue(ThisObjectValue.withType(typeStore.get(ClassNames.getServiceStubClassName(service)))))).build());
return javaMethods;
}
use of com.google.api.generator.engine.ast.MethodDefinition in project gapic-generator-java by googleapis.
the class AbstractServiceStubSettingsClassComposer method createNestedClassConstructorMethods.
private static List<MethodDefinition> createNestedClassConstructorMethods(Service service, GapicServiceConfig serviceConfig, Map<String, VariableExpr> nestedMethodSettingsMemberVarExprs, TypeStore typeStore) {
TypeNode builderType = typeStore.get(NESTED_BUILDER_CLASS_NAME);
List<MethodDefinition> ctorMethods = new ArrayList<>();
// First argument-less contructor.
ctorMethods.add(MethodDefinition.constructorBuilder().setScope(ScopeNode.PROTECTED).setReturnType(builderType).setBody(Arrays.asList(ExprStatement.withExpr(ReferenceConstructorExpr.thisBuilder().setType(builderType).setArguments(CastExpr.builder().setType(FIXED_TYPESTORE.get("ClientContext")).setExpr(ValueExpr.createNullExpr()).build()).build()))).build());
// Second ctor that takes a clientContext argument.
VariableExpr clientContextVarExpr = VariableExpr.withVariable(Variable.builder().setType(FIXED_TYPESTORE.get("ClientContext")).setName("clientContext").build());
Reference pagedSettingsBuilderRef = ConcreteReference.withClazz(PagedCallSettings.Builder.class);
Reference batchingSettingsBuilderRef = ConcreteReference.withClazz(BatchingCallSettings.Builder.class);
Reference unaryCallSettingsBuilderRef = ConcreteReference.withClazz(UnaryCallSettings.Builder.class);
Function<TypeNode, Boolean> isUnaryCallSettingsBuilderFn = t -> t.reference().copyAndSetGenerics(ImmutableList.of()).equals(unaryCallSettingsBuilderRef);
Function<TypeNode, Boolean> isPagedCallSettingsBuilderFn = t -> t.reference().copyAndSetGenerics(ImmutableList.of()).equals(pagedSettingsBuilderRef);
Function<TypeNode, Boolean> isBatchingCallSettingsBuilderFn = t -> t.reference().copyAndSetGenerics(ImmutableList.of()).equals(batchingSettingsBuilderRef);
Function<TypeNode, TypeNode> builderToCallSettingsFn = t -> TypeNode.withReference(VaporReference.builder().setName(String.join(DOT, t.reference().enclosingClassNames())).setPakkage(t.reference().pakkage()).build());
List<Statement> ctorBodyStatements = new ArrayList<>();
ctorBodyStatements.add(ExprStatement.withExpr(ReferenceConstructorExpr.superBuilder().setType(builderType).setArguments(clientContextVarExpr).build()));
ctorBodyStatements.add(EMPTY_LINE_STATEMENT);
ctorBodyStatements.addAll(nestedMethodSettingsMemberVarExprs.entrySet().stream().map(e -> {
// TODO(miraleung): Extract this into another method.
// Name is fooBarSettings.
VariableExpr varExpr = e.getValue();
TypeNode varType = varExpr.type();
Preconditions.checkState(e.getKey().endsWith(SETTINGS_LITERAL), String.format("%s expected to end with \"Settings\"", e.getKey()));
String methodName = getMethodNameFromSettingsVarName(e.getKey());
if (!isPagedCallSettingsBuilderFn.apply(varType)) {
if (!isBatchingCallSettingsBuilderFn.apply(varType)) {
boolean isUnaryCallSettings = isUnaryCallSettingsBuilderFn.apply(varType);
Expr builderExpr = AssignmentExpr.builder().setVariableExpr(varExpr).setValueExpr(MethodInvocationExpr.builder().setStaticReferenceType(builderToCallSettingsFn.apply(varExpr.type())).setMethodName(isUnaryCallSettings ? "newUnaryCallSettingsBuilder" : "newBuilder").setReturnType(varExpr.type()).build()).build();
return ExprStatement.withExpr(builderExpr);
}
Expr newBatchingSettingsExpr = MethodInvocationExpr.builder().setStaticReferenceType(FIXED_TYPESTORE.get("BatchingSettings")).setMethodName("newBuilder").build();
newBatchingSettingsExpr = MethodInvocationExpr.builder().setExprReferenceExpr(newBatchingSettingsExpr).setMethodName("build").build();
String batchingDescVarName = String.format(BATCHING_DESC_PATTERN, JavaStyle.toUpperSnakeCase(methodName));
Expr batchingSettingsBuilderExpr = MethodInvocationExpr.builder().setStaticReferenceType(builderToCallSettingsFn.apply(varType)).setMethodName("newBuilder").setArguments(VariableExpr.withVariable(Variable.builder().setType(FIXED_TYPESTORE.get("BatchingDescriptor")).setName(batchingDescVarName).build())).build();
batchingSettingsBuilderExpr = MethodInvocationExpr.builder().setExprReferenceExpr(batchingSettingsBuilderExpr).setMethodName("setBatchingSettings").setArguments(newBatchingSettingsExpr).setReturnType(varType).build();
Expr builderExpr = AssignmentExpr.builder().setVariableExpr(varExpr).setValueExpr(batchingSettingsBuilderExpr).build();
return ExprStatement.withExpr(builderExpr);
}
String memberVarName = String.format(PAGED_RESPONSE_FACTORY_PATTERN, JavaStyle.toUpperSnakeCase(methodName));
VariableExpr argVar = VariableExpr.withVariable(Variable.builder().setType(FIXED_TYPESTORE.get("PagedListResponseFactory")).setName(memberVarName).build());
Expr builderExpr = AssignmentExpr.builder().setVariableExpr(varExpr).setValueExpr(MethodInvocationExpr.builder().setStaticReferenceType(builderToCallSettingsFn.apply(varExpr.type())).setMethodName("newBuilder").setArguments(argVar).setReturnType(varExpr.type()).build()).build();
return ExprStatement.withExpr(builderExpr);
}).collect(Collectors.toList()));
Expr unaryMethodSettingsBuildersAssignExpr = AssignmentExpr.builder().setVariableExpr(NESTED_UNARY_METHOD_SETTINGS_BUILDERS_VAR_EXPR).setValueExpr(MethodInvocationExpr.builder().setStaticReferenceType(FIXED_TYPESTORE.get("ImmutableList")).setGenerics(NESTED_UNARY_METHOD_SETTINGS_BUILDERS_VAR_EXPR.type().reference().generics()).setMethodName("of").setArguments(nestedMethodSettingsMemberVarExprs.values().stream().filter(v -> isUnaryCallSettingsBuilderFn.apply(v.type()) || isPagedCallSettingsBuilderFn.apply(v.type()) || isBatchingCallSettingsBuilderFn.apply(v.type())).collect(Collectors.toList())).setReturnType(NESTED_UNARY_METHOD_SETTINGS_BUILDERS_VAR_EXPR.type()).build()).build();
ctorBodyStatements.add(EMPTY_LINE_STATEMENT);
ctorBodyStatements.add(ExprStatement.withExpr(unaryMethodSettingsBuildersAssignExpr));
ctorBodyStatements.add(ExprStatement.withExpr(MethodInvocationExpr.builder().setMethodName("initDefaults").setArguments(ValueExpr.withValue(ThisObjectValue.withType(builderType))).build()));
ctorMethods.add(MethodDefinition.constructorBuilder().setScope(ScopeNode.PROTECTED).setReturnType(builderType).setArguments(clientContextVarExpr.toBuilder().setIsDecl(true).build()).setBody(ctorBodyStatements).build());
// Third constructor that takes a ServiceStubSettings.
TypeNode outerSettingsType = typeStore.get(ClassNames.getServiceStubSettingsClassName(service));
VariableExpr settingsVarExpr = VariableExpr.withVariable(Variable.builder().setType(outerSettingsType).setName("settings").build());
ctorBodyStatements = new ArrayList<>();
ctorBodyStatements.add(ExprStatement.withExpr(ReferenceConstructorExpr.superBuilder().setType(builderType).setArguments(settingsVarExpr).build()));
ctorBodyStatements.add(EMPTY_LINE_STATEMENT);
// TODO(cleanup): Technically this should actually use the outer class's <method>Settings
// members to avoid decoupling variable names.
ctorBodyStatements.addAll(nestedMethodSettingsMemberVarExprs.values().stream().map(v -> ExprStatement.withExpr(AssignmentExpr.builder().setVariableExpr(v).setValueExpr(MethodInvocationExpr.builder().setExprReferenceExpr(VariableExpr.builder().setExprReferenceExpr(settingsVarExpr).setVariable(v.variable()).build()).setMethodName("toBuilder").setReturnType(v.type()).build()).build())).collect(Collectors.toList()));
ctorBodyStatements.add(EMPTY_LINE_STATEMENT);
ctorBodyStatements.add(ExprStatement.withExpr(unaryMethodSettingsBuildersAssignExpr));
ctorMethods.add(MethodDefinition.constructorBuilder().setScope(ScopeNode.PROTECTED).setReturnType(builderType).setArguments(settingsVarExpr.toBuilder().setIsDecl(true).build()).setBody(ctorBodyStatements).build());
return ctorMethods;
}
use of com.google.api.generator.engine.ast.MethodDefinition in project gapic-generator-java by googleapis.
the class AbstractServiceStubSettingsClassComposer method createPagedListDescriptorAssignExpr.
private static Expr createPagedListDescriptorAssignExpr(VariableExpr pagedListDescVarExpr, Method method, TypeNode repeatedResponseType, String repeatedFieldName, Map<String, Message> messageTypes, TypeStore typeStore) {
MethodDefinition.Builder methodStarterBuilder = MethodDefinition.builder().setIsOverride(true).setScope(ScopeNode.PUBLIC);
List<MethodDefinition> anonClassMethods = new ArrayList<>();
// Create emptyToken method.
anonClassMethods.add(methodStarterBuilder.setReturnType(TypeNode.STRING).setName("emptyToken").setReturnExpr(ValueExpr.withValue(StringObjectValue.withValue(""))).build());
// Create injectToken method.
VariableExpr payloadVarExpr = VariableExpr.withVariable(Variable.builder().setType(method.inputType()).setName("payload").build());
VariableExpr strTokenVarExpr = VariableExpr.withVariable(Variable.builder().setType(TypeNode.STRING).setName("token").build());
TypeNode returnType = method.inputType();
Expr newBuilderExpr = MethodInvocationExpr.builder().setStaticReferenceType(method.inputType()).setMethodName("newBuilder").setArguments(payloadVarExpr).build();
Expr returnExpr = MethodInvocationExpr.builder().setExprReferenceExpr(newBuilderExpr).setMethodName("setPageToken").setArguments(strTokenVarExpr).build();
returnExpr = MethodInvocationExpr.builder().setExprReferenceExpr(returnExpr).setMethodName("build").setReturnType(returnType).build();
anonClassMethods.add(methodStarterBuilder.setReturnType(method.inputType()).setName("injectToken").setArguments(Arrays.asList(payloadVarExpr, strTokenVarExpr).stream().map(v -> v.toBuilder().setIsDecl(true).build()).collect(Collectors.toList())).setReturnExpr(returnExpr).build());
// Create injectPageSize method.
VariableExpr pageSizeVarExpr = VariableExpr.withVariable(Variable.builder().setType(TypeNode.INT).setName("pageSize").build());
// Re-declare for clarity and easier readability.
returnType = method.inputType();
returnExpr = MethodInvocationExpr.builder().setExprReferenceExpr(newBuilderExpr).setMethodName("set" + JavaStyle.toUpperCamelCase(method.pageSizeFieldName())).setArguments(pageSizeVarExpr).build();
returnExpr = MethodInvocationExpr.builder().setExprReferenceExpr(returnExpr).setMethodName("build").setReturnType(returnType).build();
anonClassMethods.add(methodStarterBuilder.setReturnType(method.inputType()).setName("injectPageSize").setArguments(Arrays.asList(payloadVarExpr, pageSizeVarExpr).stream().map(v -> v.toBuilder().setIsDecl(true).build()).collect(Collectors.toList())).setReturnExpr(returnExpr).build());
// TODO(miraleung): Test the edge cases where these proto fields aren't present.
// Create extractPageSize method.
returnType = TypeNode.INT_OBJECT;
anonClassMethods.add(methodStarterBuilder.setReturnType(returnType).setName("extractPageSize").setArguments(payloadVarExpr.toBuilder().setIsDecl(true).build()).setReturnExpr(MethodInvocationExpr.builder().setExprReferenceExpr(payloadVarExpr).setMethodName("get" + JavaStyle.toUpperCamelCase(method.pageSizeFieldName())).setReturnType(returnType).build()).build());
// Create extractNextToken method.
returnType = TypeNode.STRING;
payloadVarExpr = VariableExpr.withVariable(Variable.builder().setType(method.outputType()).setName("payload").build());
anonClassMethods.add(methodStarterBuilder.setReturnType(returnType).setName("extractNextToken").setArguments(payloadVarExpr.toBuilder().setIsDecl(true).build()).setReturnExpr(MethodInvocationExpr.builder().setExprReferenceExpr(payloadVarExpr).setMethodName("getNextPageToken").setReturnType(returnType).build()).build());
// Create extractResources method.
returnType = TypeNode.withReference(ConcreteReference.builder().setClazz(Iterable.class).setGenerics(Arrays.asList(repeatedResponseType.reference())).build());
Expr getResponsesExpr;
Expr elseExpr;
Expr thenExpr;
if (repeatedResponseType.reference() != null && "java.util.Map.Entry".equals(repeatedResponseType.reference().fullName())) {
getResponsesExpr = MethodInvocationExpr.builder().setExprReferenceExpr(payloadVarExpr).setMethodName(String.format("get%sMap", JavaStyle.toUpperCamelCase(repeatedFieldName))).setReturnType(returnType).build();
thenExpr = MethodInvocationExpr.builder().setStaticReferenceType(TypeNode.withReference(ConcreteReference.withClazz(Collections.class))).setGenerics(Arrays.asList(repeatedResponseType.reference())).setMethodName("emptySet").setReturnType(returnType).build();
elseExpr = MethodInvocationExpr.builder().setMethodName("entrySet").setExprReferenceExpr(MethodInvocationExpr.builder().setExprReferenceExpr(payloadVarExpr).setMethodName(String.format("get%sMap", JavaStyle.toUpperCamelCase(repeatedFieldName))).build()).setReturnType(returnType).build();
} else {
getResponsesExpr = MethodInvocationExpr.builder().setExprReferenceExpr(payloadVarExpr).setMethodName(String.format("get%sList", JavaStyle.toUpperCamelCase(repeatedFieldName))).setReturnType(returnType).build();
thenExpr = MethodInvocationExpr.builder().setStaticReferenceType(TypeNode.withReference(ConcreteReference.withClazz(ImmutableList.class))).setGenerics(Arrays.asList(repeatedResponseType.reference())).setMethodName("of").setReturnType(returnType).build();
elseExpr = getResponsesExpr;
}
// While protobufs should not be null, this null-check is needed to protect against NPEs
// in paged iteration on clients that use legacy HTTP/JSON types, as these clients can
// actually return null instead of an empty list.
// Context:
// Original issue: https://github.com/googleapis/google-cloud-java/issues/3736
// Relevant discussion where this check was first added:
// https://github.com/googleapis/google-cloud-java/pull/4499#discussion_r257057409
Expr conditionExpr = RelationalOperationExpr.equalToWithExprs(getResponsesExpr, ValueExpr.createNullExpr());
returnExpr = TernaryExpr.builder().setConditionExpr(conditionExpr).setThenExpr(thenExpr).setElseExpr(elseExpr).build();
anonClassMethods.add(methodStarterBuilder.setReturnType(returnType).setName("extractResources").setArguments(payloadVarExpr.toBuilder().setIsDecl(true).build()).setReturnExpr(returnExpr).build());
// Create the anonymous class.
AnonymousClassExpr pagedListDescAnonClassExpr = AnonymousClassExpr.builder().setType(pagedListDescVarExpr.type()).setMethods(anonClassMethods).build();
// Declare and assign the variable.
return AssignmentExpr.builder().setVariableExpr(pagedListDescVarExpr.toBuilder().setIsDecl(true).setScope(ScopeNode.PRIVATE).setIsStatic(true).setIsFinal(true).build()).setValueExpr(pagedListDescAnonClassExpr).build();
}
use of com.google.api.generator.engine.ast.MethodDefinition in project gapic-generator-java by googleapis.
the class AbstractServiceStubSettingsClassComposer method createDefaultTransportTransportProviderBuilderMethods.
protected List<MethodDefinition> createDefaultTransportTransportProviderBuilderMethods() {
// Create the defaultGrpcTransportProviderBuilder method.
Iterator<Class<?>> providerClassIt = getTransportContext().instantiatingChannelProviderClasses().iterator();
Iterator<Class<?>> providerBuilderClassIt = getTransportContext().instantiatingChannelProviderBuilderClasses().iterator();
Iterator<String> builderNamesIt = getTransportContext().defaultTransportProviderBuilderNames().iterator();
List<MethodDefinition> methods = new ArrayList<>();
while (providerClassIt.hasNext() && providerBuilderClassIt.hasNext() && builderNamesIt.hasNext()) {
TypeNode returnType = TypeNode.withReference(ConcreteReference.withClazz(providerBuilderClassIt.next()));
TypeNode channelProviderType = TypeNode.withReference(ConcreteReference.withClazz(providerClassIt.next()));
MethodInvocationExpr transportChannelProviderBuilderExpr = MethodInvocationExpr.builder().setStaticReferenceType(channelProviderType).setMethodName("newBuilder").setReturnType(returnType).build();
Expr returnExpr = initializeTransportProviderBuilder(transportChannelProviderBuilderExpr, returnType);
MethodDefinition method = MethodDefinition.builder().setHeaderCommentStatements(SettingsCommentComposer.DEFAULT_TRANSPORT_PROVIDER_BUILDER_METHOD_COMMENT).setScope(ScopeNode.PUBLIC).setIsStatic(true).setReturnType(returnType).setName(builderNamesIt.next()).setReturnExpr(returnExpr).build();
methods.add(method);
}
return methods;
}
use of com.google.api.generator.engine.ast.MethodDefinition in project gapic-generator-java by googleapis.
the class AbstractServiceStubSettingsClassComposer method createDefaultHelperAndGetterMethods.
private List<MethodDefinition> createDefaultHelperAndGetterMethods(Service service, TypeStore typeStore) {
List<MethodDefinition> javaMethods = new ArrayList<>();
// Create the defaultExecutorProviderBuilder method.
TypeNode returnType = TypeNode.withReference(ConcreteReference.withClazz(InstantiatingExecutorProvider.Builder.class));
javaMethods.add(MethodDefinition.builder().setHeaderCommentStatements(SettingsCommentComposer.DEFAULT_EXECUTOR_PROVIDER_BUILDER_METHOD_COMMENT).setScope(ScopeNode.PUBLIC).setIsStatic(true).setReturnType(returnType).setName("defaultExecutorProviderBuilder").setReturnExpr(MethodInvocationExpr.builder().setStaticReferenceType(FIXED_TYPESTORE.get("InstantiatingExecutorProvider")).setMethodName("newBuilder").setReturnType(returnType).build()).build());
// Create the getDefaultEndpoint method.
returnType = TypeNode.STRING;
javaMethods.add(MethodDefinition.builder().setHeaderCommentStatements(SettingsCommentComposer.DEFAULT_SERVICE_ENDPOINT_METHOD_COMMENT).setScope(ScopeNode.PUBLIC).setIsStatic(true).setReturnType(returnType).setName("getDefaultEndpoint").setReturnExpr(ValueExpr.withValue(StringObjectValue.withValue(service.defaultHost()))).build());
// Create the getDefaultMtlsEndpoint method.
returnType = TypeNode.STRING;
javaMethods.add(MethodDefinition.builder().setHeaderCommentStatements(SettingsCommentComposer.DEFAULT_SERVICE_MTLS_ENDPOINT_METHOD_COMMENT).setScope(ScopeNode.PUBLIC).setIsStatic(true).setReturnType(returnType).setName("getDefaultMtlsEndpoint").setReturnExpr(ValueExpr.withValue(StringObjectValue.withValue(service.defaultHost().replace(".googleapis.com", ".mtls.googleapis.com")))).build());
// Create the getDefaultServiceScopes method.
returnType = TypeNode.withReference(ConcreteReference.builder().setClazz(List.class).setGenerics(Arrays.asList(TypeNode.STRING.reference())).build());
javaMethods.add(MethodDefinition.builder().setHeaderCommentStatements(SettingsCommentComposer.DEFAULT_SERVICE_SCOPES_METHOD_COMMENT).setScope(ScopeNode.PUBLIC).setIsStatic(true).setReturnType(returnType).setName("getDefaultServiceScopes").setReturnExpr(DEFAULT_SERVICE_SCOPES_VAR_EXPR).build());
javaMethods.add(createDefaultCredentialsProviderBuilderMethod());
javaMethods.addAll(createDefaultTransportTransportProviderBuilderMethods());
javaMethods.add(createDefaultTransportChannelProviderMethod());
javaMethods.addAll(createApiClientHeaderProviderBuilderMethods(service, typeStore));
return javaMethods;
}
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