| /* |
| * Copyright 2016, gRPC Authors All rights reserved. |
| * |
| * 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 io.grpc.internal; |
| |
| import static com.google.common.base.MoreObjects.firstNonNull; |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import io.grpc.Attributes; |
| import io.grpc.CallCredentials; |
| import io.grpc.CallOptions; |
| import io.grpc.Metadata; |
| import io.grpc.MethodDescriptor; |
| import io.grpc.SecurityLevel; |
| import java.net.SocketAddress; |
| import java.util.concurrent.Executor; |
| import javax.annotation.Nullable; |
| |
| final class CallCredentialsApplyingTransportFactory implements ClientTransportFactory { |
| private final ClientTransportFactory delegate; |
| private final Executor appExecutor; |
| |
| CallCredentialsApplyingTransportFactory( |
| ClientTransportFactory delegate, Executor appExecutor) { |
| this.delegate = checkNotNull(delegate, "delegate"); |
| this.appExecutor = checkNotNull(appExecutor, "appExecutor"); |
| } |
| |
| @Override |
| public ConnectionClientTransport newClientTransport( |
| SocketAddress serverAddress, String authority, @Nullable String userAgent) { |
| return new CallCredentialsApplyingTransport( |
| delegate.newClientTransport(serverAddress, authority, userAgent), authority); |
| } |
| |
| @Override |
| public void close() { |
| delegate.close(); |
| } |
| |
| private class CallCredentialsApplyingTransport extends ForwardingConnectionClientTransport { |
| private final ConnectionClientTransport delegate; |
| private final String authority; |
| |
| CallCredentialsApplyingTransport(ConnectionClientTransport delegate, String authority) { |
| this.delegate = checkNotNull(delegate, "delegate"); |
| this.authority = checkNotNull(authority, "authority"); |
| } |
| |
| @Override |
| protected ConnectionClientTransport delegate() { |
| return delegate; |
| } |
| |
| @Override |
| public ClientStream newStream( |
| MethodDescriptor<?, ?> method, Metadata headers, CallOptions callOptions) { |
| CallCredentials creds = callOptions.getCredentials(); |
| if (creds != null) { |
| MetadataApplierImpl applier = new MetadataApplierImpl( |
| delegate, method, headers, callOptions); |
| Attributes.Builder effectiveAttrsBuilder = Attributes.newBuilder() |
| .set(CallCredentials.ATTR_AUTHORITY, authority) |
| .set(CallCredentials.ATTR_SECURITY_LEVEL, SecurityLevel.NONE) |
| .setAll(delegate.getAttributes()); |
| if (callOptions.getAuthority() != null) { |
| effectiveAttrsBuilder.set(CallCredentials.ATTR_AUTHORITY, callOptions.getAuthority()); |
| } |
| creds.applyRequestMetadata(method, effectiveAttrsBuilder.build(), |
| firstNonNull(callOptions.getExecutor(), appExecutor), applier); |
| return applier.returnStream(); |
| } else { |
| return delegate.newStream(method, headers, callOptions); |
| } |
| } |
| } |
| } |