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[NC-1909] IBFT message gossiping (#501)
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58 changes: 58 additions & 0 deletions
58
...gration-test/java/tech/pegasys/pantheon/consensus/ibft/support/StubbedPeerConnection.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| /* | ||
| * Copyright 2019 ConsenSys AG. | ||
| * | ||
| * 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 tech.pegasys.pantheon.consensus.ibft.support; | ||
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| import static java.util.Collections.emptyList; | ||
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| import tech.pegasys.pantheon.ethereum.p2p.api.MessageData; | ||
| import tech.pegasys.pantheon.ethereum.p2p.api.PeerConnection; | ||
| import tech.pegasys.pantheon.ethereum.p2p.wire.Capability; | ||
| import tech.pegasys.pantheon.ethereum.p2p.wire.PeerInfo; | ||
| import tech.pegasys.pantheon.ethereum.p2p.wire.messages.DisconnectMessage.DisconnectReason; | ||
| import tech.pegasys.pantheon.util.bytes.BytesValue; | ||
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| import java.net.SocketAddress; | ||
| import java.util.Set; | ||
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| public class StubbedPeerConnection implements PeerConnection { | ||
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| @Override | ||
| public void send(final Capability capability, final MessageData message) | ||
| throws PeerNotConnected {} | ||
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| @Override | ||
| public Set<Capability> getAgreedCapabilities() { | ||
| return null; | ||
| } | ||
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| @Override | ||
| public PeerInfo getPeer() { | ||
| return new PeerInfo(0, "IbftIntTestPeer", emptyList(), 0, BytesValue.EMPTY); | ||
| } | ||
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| @Override | ||
| public void terminateConnection(final DisconnectReason reason, final boolean peerInitiated) {} | ||
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| @Override | ||
| public void disconnect(final DisconnectReason reason) {} | ||
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| @Override | ||
| public SocketAddress getLocalAddress() { | ||
| return null; | ||
| } | ||
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| @Override | ||
| public SocketAddress getRemoteAddress() { | ||
| return null; | ||
| } | ||
| } |
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108 changes: 108 additions & 0 deletions
108
consensus/ibft/src/main/java/tech/pegasys/pantheon/consensus/ibft/IbftGossip.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| /* | ||
| * Copyright 2018 ConsenSys AG. | ||
| * | ||
| * 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 tech.pegasys.pantheon.consensus.ibft; | ||
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| import tech.pegasys.pantheon.consensus.ibft.ibftmessage.CommitMessageData; | ||
| import tech.pegasys.pantheon.consensus.ibft.ibftmessage.IbftV2; | ||
| import tech.pegasys.pantheon.consensus.ibft.ibftmessage.NewRoundMessageData; | ||
| import tech.pegasys.pantheon.consensus.ibft.ibftmessage.PrepareMessageData; | ||
| import tech.pegasys.pantheon.consensus.ibft.ibftmessage.ProposalMessageData; | ||
| import tech.pegasys.pantheon.consensus.ibft.ibftmessage.RoundChangeMessageData; | ||
| import tech.pegasys.pantheon.consensus.ibft.ibftmessagedata.SignedData; | ||
| import tech.pegasys.pantheon.consensus.ibft.network.IbftMulticaster; | ||
| import tech.pegasys.pantheon.crypto.SECP256K1.Signature; | ||
| import tech.pegasys.pantheon.ethereum.core.Address; | ||
| import tech.pegasys.pantheon.ethereum.p2p.api.Message; | ||
| import tech.pegasys.pantheon.ethereum.p2p.api.MessageData; | ||
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| import java.util.Collections; | ||
| import java.util.LinkedHashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
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| import com.google.common.collect.Lists; | ||
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| /** Class responsible for rebroadcasting IBFT messages to known validators */ | ||
| public class IbftGossip { | ||
| private final IbftMulticaster peers; | ||
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| // Size of the seenMessages cache, should end up utilising 65bytes * this number + some meta data | ||
| private final int maxSeenMessages; | ||
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| // Set that starts evicting members when it hits capacity | ||
| private final Set<Signature> seenMessages = | ||
| Collections.newSetFromMap( | ||
| new LinkedHashMap<Signature, Boolean>() { | ||
| @Override | ||
| protected boolean removeEldestEntry(final Map.Entry<Signature, Boolean> eldest) { | ||
| return size() > maxSeenMessages; | ||
| } | ||
| }); | ||
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| IbftGossip(final IbftMulticaster peers, final int maxSeenMessages) { | ||
| this.maxSeenMessages = maxSeenMessages; | ||
| this.peers = peers; | ||
| } | ||
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| /** | ||
| * Constructor that attaches gossip logic to a set of peers | ||
| * | ||
| * @param peers The always up to date set of connected peers that understand IBFT | ||
| */ | ||
| public IbftGossip(final IbftMulticaster peers) { | ||
| this(peers, 10_000); | ||
| } | ||
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| /** | ||
| * Retransmit a given IBFT message to other known validators nodes | ||
| * | ||
| * @param message The raw message to be gossiped | ||
| * @return Whether the message was rebroadcast or has been ignored as a repeat | ||
| */ | ||
| public boolean gossipMessage(final Message message) { | ||
| final MessageData messageData = message.getData(); | ||
| final SignedData<?> signedData; | ||
| switch (messageData.getCode()) { | ||
| case IbftV2.PROPOSAL: | ||
| signedData = ProposalMessageData.fromMessageData(messageData).decode(); | ||
| break; | ||
| case IbftV2.PREPARE: | ||
| signedData = PrepareMessageData.fromMessageData(messageData).decode(); | ||
| break; | ||
| case IbftV2.COMMIT: | ||
| signedData = CommitMessageData.fromMessageData(messageData).decode(); | ||
| break; | ||
| case IbftV2.ROUND_CHANGE: | ||
| signedData = RoundChangeMessageData.fromMessageData(messageData).decode(); | ||
| break; | ||
| case IbftV2.NEW_ROUND: | ||
| signedData = NewRoundMessageData.fromMessageData(messageData).decode(); | ||
| break; | ||
| default: | ||
| throw new IllegalArgumentException( | ||
| "Received message does not conform to any recognised IBFT message structure."); | ||
| } | ||
| final Signature signature = signedData.getSignature(); | ||
| if (seenMessages.contains(signature)) { | ||
| return false; | ||
| } else { | ||
| final List<Address> excludeAddressesList = | ||
| Lists.newArrayList( | ||
| message.getConnection().getPeer().getAddress(), signedData.getSender()); | ||
| peers.multicastToValidatorsExcept(messageData, excludeAddressesList); | ||
| seenMessages.add(signature); | ||
| return true; | ||
| } | ||
| } | ||
| } |
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