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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019 Bell Canada.
* Modifications Copyright (C) 2019 AT&T Intellectual Property. 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.cds.client;
import static org.junit.Assert.assertEquals;
import static org.mockito.AdditionalAnswers.delegatesTo;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import io.grpc.ClientInterceptors;
import io.grpc.ManagedChannel;
import io.grpc.Metadata;
import io.grpc.Metadata.Key;
import io.grpc.ServerCall;
import io.grpc.ServerCall.Listener;
import io.grpc.ServerCallHandler;
import io.grpc.ServerInterceptor;
import io.grpc.ServerInterceptors;
import io.grpc.inprocess.InProcessChannelBuilder;
import io.grpc.inprocess.InProcessServerBuilder;
import io.grpc.stub.StreamObserver;
import io.grpc.testing.GrpcCleanupRule;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.Base64;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.mockito.ArgumentCaptor;
import org.mockito.ArgumentMatchers;
import org.onap.ccsdk.cds.controllerblueprints.processing.api.BluePrintProcessingServiceGrpc;
import org.onap.ccsdk.cds.controllerblueprints.processing.api.BluePrintProcessingServiceGrpc.BluePrintProcessingServiceImplBase;
import org.onap.ccsdk.cds.controllerblueprints.processing.api.BluePrintProcessingServiceGrpc.BluePrintProcessingServiceStub;
import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceOutput;
import org.onap.policy.cds.properties.CdsServerProperties;
public class BasicAuthClientHeaderInterceptorTest {
// Generate a unique in-process server name.
private static final String SERVER_NAME = InProcessServerBuilder.generateName();
private static final String CREDS = "test";
// Manages automatic graceful shutdown for the registered server and client channels at the end of test.
@Rule
public final GrpcCleanupRule grpcCleanup = new GrpcCleanupRule();
private final ServerInterceptor mockCdsGrpcServerInterceptor = mock(ServerInterceptor.class,
delegatesTo(new TestServerInterceptor()));
private final CdsServerProperties props = new CdsServerProperties();
private ManagedChannel channel;
/**
* Setup the test.
*
* @throws IOException on failure to register the test grpc server for graceful shutdown
*/
@Before
public void setUp() throws IOException {
// Setup the CDS properties
props.setHost(SERVER_NAME);
props.setPort(2000);
props.setUsername(CREDS);
props.setPassword(CREDS);
props.setTimeout(60);
// Implement the test gRPC server
BluePrintProcessingServiceImplBase testCdsBlueprintServerImpl = new BluePrintProcessingServiceImplBase() {};
// Create a server, add service, start, and register for automatic graceful shutdown.
grpcCleanup.register(InProcessServerBuilder.forName(SERVER_NAME).directExecutor()
.addService(ServerInterceptors.intercept(testCdsBlueprintServerImpl, mockCdsGrpcServerInterceptor)).build()
.start());
// Create a client channel and register for automatic graceful shutdown
channel = grpcCleanup.register(InProcessChannelBuilder.forName(SERVER_NAME).directExecutor().build());
}
@Test
public void testIfBasicAuthHeaderIsDeliveredToCdsServer() {
BluePrintProcessingServiceStub bpProcessingSvcStub = BluePrintProcessingServiceGrpc
.newStub(ClientInterceptors.intercept(channel, new BasicAuthClientHeaderInterceptor(props)));
ArgumentCaptor<Metadata> metadataCaptor = ArgumentCaptor.forClass(Metadata.class);
bpProcessingSvcStub.process(new StreamObserver<ExecutionServiceOutput>() {
@Override
public void onNext(final ExecutionServiceOutput executionServiceOutput) {
// Test purpose only
}
@Override
public void onError(final Throwable throwable) {
// Test purpose only
}
@Override
public void onCompleted() {
// Test purpose only
}
});
verify(mockCdsGrpcServerInterceptor).interceptCall(ArgumentMatchers.any(), metadataCaptor.capture(),
ArgumentMatchers.any());
Key<String> authHeader = Key
.of(BasicAuthClientHeaderInterceptor.BASIC_AUTH_HEADER_KEY, Metadata.ASCII_STRING_MARSHALLER);
String expectedBaseAuth = "Basic " + Base64.getEncoder().encodeToString(String.format("%s:%s", CREDS, CREDS)
.getBytes(StandardCharsets.UTF_8));
assertEquals(expectedBaseAuth, metadataCaptor.getValue().get(authHeader));
}
private static class TestServerInterceptor implements ServerInterceptor {
@Override
public <Q, P> Listener<Q> interceptCall(final ServerCall<Q, P> serverCall,
final Metadata metadata, final ServerCallHandler<Q, P> serverCallHandler) {
return serverCallHandler.startCall(serverCall, metadata);
}
}
}
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