Examples with BatchingDescriptor com.google.api.gax.rpc.BatchingDescriptor used on opensource projects

Example 1 with BatchingDescriptor

use of com.google.api.gax.rpc.BatchingDescriptor 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;
}