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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.http.server.jetty;
import com.yahoo.jdisc.Metric;
import com.yahoo.jdisc.http.ConnectorConfig;
import org.eclipse.jetty.server.ConnectionFactory;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ServerConnectionStatistics;
import org.eclipse.jetty.server.ServerConnector;
import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.lang.reflect.Field;
import java.net.Socket;
import java.net.SocketException;
import java.nio.channels.ServerSocketChannel;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* @author bjorncs
*/
class JDiscServerConnector extends ServerConnector {
public static final String REQUEST_ATTRIBUTE = JDiscServerConnector.class.getName();
private final static Logger log = Logger.getLogger(JDiscServerConnector.class.getName());
private final Metric.Context metricCtx;
private final Map<String, Metric.Context> requestMetricContextCache = new ConcurrentHashMap<>();
private final ServerConnectionStatistics statistics;
private final boolean tcpKeepAlive;
private final boolean tcpNoDelay;
private final ServerSocketChannel channelOpenedByActivator;
private final Metric metric;
private final String connectorName;
private final int listenPort;
JDiscServerConnector(ConnectorConfig config, Metric metric, Server server,
ServerSocketChannel channelOpenedByActivator, ConnectionFactory... factories) {
super(server, factories);
this.channelOpenedByActivator = channelOpenedByActivator;
this.tcpKeepAlive = config.tcpKeepAliveEnabled();
this.tcpNoDelay = config.tcpNoDelay();
this.metric = metric;
this.connectorName = config.name();
this.listenPort = config.listenPort();
this.metricCtx = metric.createContext(createConnectorDimensions(listenPort, connectorName));
this.statistics = new ServerConnectionStatistics();
addBean(statistics);
ConnectorConfig.Throttling throttlingConfig = config.throttling();
if (throttlingConfig.enabled()) {
new ConnectionThrottler(this, throttlingConfig).registerBeans();
}
}
@Override
protected void configure(final Socket socket) {
super.configure(socket);
try {
socket.setKeepAlive(tcpKeepAlive);
socket.setTcpNoDelay(tcpNoDelay);
} catch (SocketException ignored) {
}
}
@Override
public void open() throws IOException {
if (channelOpenedByActivator == null) {
log.log(Level.INFO, "No channel set by activator, opening channel ourselves.");
try {
super.open();
} catch (RuntimeException e) {
log.log(Level.SEVERE, "failed org.eclipse.jetty.server.Server open() with port " + getPort());
throw e;
}
return;
}
log.log(Level.INFO, "Using channel set by activator: " + channelOpenedByActivator);
channelOpenedByActivator.socket().setReuseAddress(getReuseAddress());
int localPort = channelOpenedByActivator.socket().getLocalPort();
try {
uglySetLocalPort(localPort);
} catch (NoSuchFieldException | IllegalAccessException e) {
throw new RuntimeException("Could not set local port.", e);
}
if (localPort <= 0) {
throw new IOException("Server channel not bound");
}
addBean(channelOpenedByActivator);
channelOpenedByActivator.configureBlocking(true);
addBean(channelOpenedByActivator);
try {
uglySetChannel(channelOpenedByActivator);
} catch (NoSuchFieldException | IllegalAccessException e) {
throw new RuntimeException("Could not set server channel.", e);
}
}
private void uglySetLocalPort(int localPort) throws NoSuchFieldException, IllegalAccessException {
Field localPortField = ServerConnector.class.getDeclaredField("_localPort");
localPortField.setAccessible(true);
localPortField.set(this, localPort);
}
private void uglySetChannel(ServerSocketChannel channelOpenedByActivator) throws NoSuchFieldException,
IllegalAccessException {
Field acceptChannelField = ServerConnector.class.getDeclaredField("_acceptChannel");
acceptChannelField.setAccessible(true);
acceptChannelField.set(this, channelOpenedByActivator);
}
public ServerConnectionStatistics getStatistics() {
return statistics;
}
public Metric.Context getConnectorMetricContext() {
return metricCtx;
}
public Metric.Context getRequestMetricContext(HttpServletRequest request) {
String method = request.getMethod();
return requestMetricContextCache.computeIfAbsent(method, ignored -> {
Map<String, Object> dimensions = createConnectorDimensions(listenPort, connectorName);
dimensions.put(JettyHttpServer.Metrics.METHOD_DIMENSION, method);
return metric.createContext(dimensions);
});
}
public static JDiscServerConnector fromRequest(ServletRequest request) {
return (JDiscServerConnector) request.getAttribute(REQUEST_ATTRIBUTE);
}
private static Map<String, Object> createConnectorDimensions(int listenPort, String connectorName) {
Map<String, Object> props = new HashMap<>();
props.put(JettyHttpServer.Metrics.NAME_DIMENSION, connectorName);
props.put(JettyHttpServer.Metrics.PORT_DIMENSION, listenPort);
return props;
}
}
|
