config/src/main/java/com/yahoo/config/subscription/impl/MockConnection.java


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
146
147
148
149
150
151
152
153
154
155
156
157
158
159

// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.config.subscription.impl;

import com.yahoo.jrt.Request;
import com.yahoo.jrt.RequestWaiter;
import com.yahoo.vespa.config.ConfigPayload;
import com.yahoo.vespa.config.Connection;
import com.yahoo.vespa.config.ConnectionPool;
import com.yahoo.vespa.config.protocol.JRTServerConfigRequestV3;
import com.yahoo.vespa.config.protocol.Payload;
import com.yahoo.vespa.config.util.ConfigUtils;

/**
 * For unit testing
 *
 * @author hmusum
 * @since 5.1.11
 */
public class MockConnection implements ConnectionPool, com.yahoo.vespa.config.Connection {

    private Request lastRequest;
    private final ResponseHandler responseHandler;
    private int numberOfRequests = 0;

    public int getNumberOfFailovers() {
        return numberOfFailovers;
    }

    private int numberOfFailovers = 0;
    private final int numSpecs;

    public MockConnection() {
        this(new OKResponseHandler());
    }

    public MockConnection(ResponseHandler responseHandler) {
        this(responseHandler, 1);
    }

    public MockConnection(ResponseHandler responseHandler, int numSpecs) {
        this.responseHandler = responseHandler;
        this.numSpecs = numSpecs;
    }

    @Override
    public void invokeAsync(Request request, double jrtTimeout, RequestWaiter requestWaiter) {
        numberOfRequests++;
        lastRequest = request;
        responseHandler.requestWaiter(requestWaiter).request(request);
        Thread t = new Thread(responseHandler);
        t.setDaemon(true);
        t.run();
    }

    @Override
    public void setError(int errorCode) {
        numberOfFailovers++;
    }

    @Override
    public void setSuccess() {
        numberOfFailovers = 0;
    }

    @Override
    public String getAddress() {
        return null;
    }

    @Override
    public void close() {

    }

    @Override
    public void setError(Connection connection, int errorCode) {
        connection.setError(errorCode);
    }

    @Override
    public Connection getCurrent() {
        return this;
    }

    @Override
    public Connection setNewCurrentConnection() {
        return this;
    }

    @Override
    public int getSize() {
        return numSpecs;
    }

    public int getNumberOfRequests() {
        return numberOfRequests;
    }

    public Request getRequest() {
        return lastRequest;
    }

    static class OKResponseHandler extends AbstractResponseHandler {
        protected void createResponse() {
            JRTServerConfigRequestV3 jrtReq = JRTServerConfigRequestV3.createFromRequest(request);
            Payload payload = Payload.from(ConfigPayload.empty());
            long generation = 1;
            jrtReq.addOkResponse(payload, generation, ConfigUtils.getMd5(payload.getData()));
        }
    }


    public interface ResponseHandler extends Runnable {

        RequestWaiter requestWaiter();

        Request request();

        ResponseHandler requestWaiter(RequestWaiter requestWaiter);

        ResponseHandler request(Request request);
    }

    public abstract static class AbstractResponseHandler implements ResponseHandler {
        private RequestWaiter requestWaiter;
        protected Request request;

        @Override
        public RequestWaiter requestWaiter() {
            return requestWaiter;
        }

        @Override
        public Request request() {
            return request;
        }

        @Override
        public ResponseHandler requestWaiter(RequestWaiter requestWaiter) {
            this.requestWaiter = requestWaiter;
            return this;
        }

        @Override
        public ResponseHandler request(Request request) {
            this.request = request;
            return this;
        }

        @Override
        public void run() {
            createResponse();
            requestWaiter.handleRequestDone(request);
        }

        protected abstract void createResponse();
    }

}