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// 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.io.ConnectionStatistics;
import org.eclipse.jetty.server.ConnectionFactory;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ServerConnector;
import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;
import java.net.Socket;
import java.net.SocketException;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.ConcurrentHashMap;
/**
* @author bjorncs
*/
class JDiscServerConnector extends ServerConnector {
public static final String REQUEST_ATTRIBUTE = JDiscServerConnector.class.getName();
private final Metric.Context metricCtx;
private final Map<RequestDimensions, Metric.Context> requestMetricContextCache = new ConcurrentHashMap<>();
private final ConnectionStatistics statistics;
private final ConnectorConfig config;
private final boolean tcpKeepAlive;
private final boolean tcpNoDelay;
private final Metric metric;
private final String connectorName;
private final int listenPort;
JDiscServerConnector(ConnectorConfig config, Metric metric, Server server, ConnectionFactory... factories) {
super(server, factories);
this.config = config;
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 ConnectionStatistics();
addBean(statistics);
ConnectorConfig.Throttling throttlingConfig = config.throttling();
if (throttlingConfig.enabled()) {
new ConnectionThrottler(this, throttlingConfig).registerWithConnector();
}
}
@Override
protected void configure(final Socket socket) {
super.configure(socket);
try {
socket.setKeepAlive(tcpKeepAlive);
socket.setTcpNoDelay(tcpNoDelay);
} catch (SocketException ignored) {
}
}
public ConnectionStatistics getStatistics() {
return statistics;
}
public Metric.Context getConnectorMetricContext() {
return metricCtx;
}
public Metric.Context getRequestMetricContext(HttpServletRequest request) {
String method = request.getMethod();
String scheme = request.getScheme();
boolean clientAuthenticated = request.getAttribute(com.yahoo.jdisc.http.servlet.ServletRequest.SERVLET_REQUEST_X509CERT) != null;
var requestDimensions = new RequestDimensions(method, scheme, clientAuthenticated);
return requestMetricContextCache.computeIfAbsent(requestDimensions, ignored -> {
Map<String, Object> dimensions = createConnectorDimensions(listenPort, connectorName);
dimensions.put(MetricDefinitions.METHOD_DIMENSION, method);
dimensions.put(MetricDefinitions.SCHEME_DIMENSION, scheme);
dimensions.put(MetricDefinitions.CLIENT_AUTHENTICATED_DIMENSION, Boolean.toString(clientAuthenticated));
return metric.createContext(dimensions);
});
}
public static JDiscServerConnector fromRequest(ServletRequest request) {
return (JDiscServerConnector) request.getAttribute(REQUEST_ATTRIBUTE);
}
ConnectorConfig connectorConfig() {
return config;
}
int listenPort() {
return listenPort;
}
private static Map<String, Object> createConnectorDimensions(int listenPort, String connectorName) {
Map<String, Object> props = new HashMap<>();
props.put(MetricDefinitions.NAME_DIMENSION, connectorName);
props.put(MetricDefinitions.PORT_DIMENSION, listenPort);
return props;
}
private static class RequestDimensions {
final String method;
final String scheme;
final boolean clientAuthenticated;
RequestDimensions(String method, String scheme, boolean clientAuthenticated) {
this.method = method;
this.scheme = scheme;
this.clientAuthenticated = clientAuthenticated;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
RequestDimensions that = (RequestDimensions) o;
return clientAuthenticated == that.clientAuthenticated &&
Objects.equals(method, that.method) &&
Objects.equals(scheme, that.scheme);
}
@Override
public int hashCode() {
return Objects.hash(method, scheme, clientAuthenticated);
}
}
}
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