forked from grpc/grpc-java
/
AltsServerCredentials.java
95 lines (83 loc) · 3.38 KB
/
AltsServerCredentials.java
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/*
* Copyright 2018 The gRPC Authors
*
* 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.alts;
import io.grpc.Channel;
import io.grpc.ExperimentalApi;
import io.grpc.ServerCredentials;
import io.grpc.Status;
import io.grpc.alts.internal.AltsProtocolNegotiator;
import io.grpc.internal.ObjectPool;
import io.grpc.internal.SharedResourcePool;
import io.grpc.netty.InternalNettyServerCredentials;
import io.grpc.netty.InternalProtocolNegotiator;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* gRPC secure server builder used for ALTS. This class adds on the necessary ALTS support to create
* a production server on Google Cloud Platform.
*/
@ExperimentalApi("https://github.com/grpc/grpc-java/issues/7621")
public final class AltsServerCredentials {
private static final Logger logger = Logger.getLogger(AltsServerCredentials.class.getName());
private AltsServerCredentials() {}
public static ServerCredentials create() {
return newBuilder().build();
}
public static Builder newBuilder() {
return new Builder();
}
@ExperimentalApi("https://github.com/grpc/grpc-java/issues/7621")
public static final class Builder {
private ObjectPool<Channel> handshakerChannelPool =
SharedResourcePool.forResource(HandshakerServiceChannel.SHARED_HANDSHAKER_CHANNEL);
private boolean enableUntrustedAlts;
/**
* Enables untrusted ALTS for testing. If this function is called, we will not check whether
* ALTS is running on Google Cloud Platform.
*/
public Builder enableUntrustedAltsForTesting() {
enableUntrustedAlts = true;
return this;
}
/** Sets a new handshaker service address for testing. */
public Builder setHandshakerAddressForTesting(String handshakerAddress) {
// Instead of using the default shared channel to the handshaker service, create a separate
// resource to the test address.
handshakerChannelPool =
SharedResourcePool.forResource(
HandshakerServiceChannel.getHandshakerChannelForTesting(handshakerAddress));
return this;
}
public ServerCredentials build() {
return InternalNettyServerCredentials.create(buildProtocolNegotiator());
}
InternalProtocolNegotiator.ProtocolNegotiator buildProtocolNegotiator() {
if (!CheckGcpEnvironment.isOnGcp()) {
if (enableUntrustedAlts) {
logger.log(
Level.WARNING,
"Untrusted ALTS mode is enabled and we cannot guarantee the trustworthiness of the "
+ "ALTS handshaker service");
} else {
Status status = Status.INTERNAL.withDescription(
"ALTS is only allowed to run on Google Cloud Platform");
return new AltsChannelCredentials.FailingProtocolNegotiator(status);
}
}
return AltsProtocolNegotiator.serverAltsProtocolNegotiator(handshakerChannelPool);
}
}
}