1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.dispatch.rpc;
import com.yahoo.search.dispatch.FillInvoker;
import com.yahoo.search.dispatch.rpc.Client.NodeConnection;
import com.yahoo.search.dispatch.rpc.RpcClient.RpcNodeConnection;
import com.yahoo.vespa.config.search.DispatchConfig;
import com.yahoo.vespa.config.search.DispatchNodesConfig;
import com.yahoo.vespa.config.search.DispatchNodesConfig.Node;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ThreadLocalRandom;
/**
* RpcResourcePool constructs {@link FillInvoker} objects that communicate with content nodes over RPC. It also contains
* the RPC connection pool.
*
* @author ollivir
*/
public class RpcResourcePool implements RpcConnectionPool {
/** Connections to the search nodes this talks to, indexed by node id ("partid") */
private volatile Map<Integer, NodeConnectionPool> nodeConnectionPools = Map.of();
private final int numConnections;
private final RpcClient rpcClient;
RpcResourcePool(Map<Integer, NodeConnection> nodeConnections) {
var builder = new HashMap<Integer, NodeConnectionPool>();
nodeConnections.forEach((key, connection) -> builder.put(key, new NodeConnectionPool(List.of(connection))));
this.nodeConnectionPools = Map.copyOf(builder);
this.rpcClient = null;
this.numConnections = 1;
}
public RpcResourcePool(DispatchConfig dispatchConfig, DispatchNodesConfig nodesConfig) {
rpcClient = new RpcClient("dispatch-client", dispatchConfig.numJrtTransportThreads());
numConnections = dispatchConfig.numJrtConnectionsPerNode();
updateNodes(nodesConfig).forEach(pool -> {
try { pool.close(); } catch (Exception ignored) { } // Shouldn't throw.
});
}
@Override
public Collection<? extends AutoCloseable> updateNodes(DispatchNodesConfig nodesConfig) {
Map<Integer, NodeConnectionPool> currentPools = new HashMap<>(nodeConnectionPools);
Map<Integer, NodeConnectionPool> nextPools = new HashMap<>();
// Who can be reused
for (Node node : nodesConfig.node()) {
if ( currentPools.containsKey(node.key())
&& currentPools.get(node.key()).nextConnection() instanceof RpcNodeConnection rpcNodeConnection
&& rpcNodeConnection.getPort() == node.port()
&& rpcNodeConnection.getHostname().equals(node.host()))
{
nextPools.put(node.key(), currentPools.remove(node.key()));
} else {
ArrayList<NodeConnection> connections = new ArrayList<>(numConnections);
for (int i = 0; i < numConnections; i++) {
connections.add(rpcClient.createConnection(node.host(), node.port()));
}
nextPools.put(node.key(), new NodeConnectionPool(connections));
}
}
this.nodeConnectionPools = Map.copyOf(nextPools);
return currentPools.values();
}
@Override
public NodeConnection getConnection(int nodeId) {
var pool = nodeConnectionPools.get(nodeId);
if (pool == null) {
return null;
} else {
return pool.nextConnection();
}
}
@Override
public void close() {
nodeConnectionPools.values().forEach(NodeConnectionPool::close);
if (rpcClient != null) {
rpcClient.close();
}
}
private static class NodeConnectionPool implements AutoCloseable {
private final List<Client.NodeConnection> connections;
NodeConnectionPool(List<NodeConnection> connections) {
this.connections = connections;
}
Client.NodeConnection nextConnection() {
int slot = ThreadLocalRandom.current().nextInt(connections.size());
return connections.get(slot);
}
public void close() {
connections.forEach(Client.NodeConnection::close);
}
}
}
|
