[52] | 1 | package geniusweb.simplerunner;
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| 2 |
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| 3 | import java.util.List;
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| 4 | import java.util.logging.Level;
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| 5 |
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| 6 | import com.fasterxml.jackson.core.JsonProcessingException;
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| 7 | import com.fasterxml.jackson.databind.ObjectMapper;
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| 8 |
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| 9 | import geniusweb.events.ProtocolEvent;
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| 10 | import geniusweb.protocol.CurrentNegoState;
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| 11 | import geniusweb.protocol.NegoProtocol;
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| 12 | import geniusweb.protocol.NegoSettings;
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| 13 | import geniusweb.protocol.NegoState;
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| 14 | import geniusweb.protocol.partyconnection.ProtocolToPartyConnFactory;
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| 15 | import tudelft.utilities.logging.Reporter;
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| 16 |
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| 17 | /**
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| 18 | * A simple tool to run a negotiation stand-alone, without starting the servers.
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| 19 | * All referred files and classes need to be stored locally (or be in the
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| 20 | * dependency list if you use maven).
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| 21 | * <p>
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| 22 | * <em>IMPORTANT</em> SimpleRunner has a number of restrictions, compared to a
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| 23 | * run using a runserver and partyserver
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| 24 | * <ul>
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| 25 | * <li>With stand-alone runner, your parties are run together in a single
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| 26 | * classloader. The main implication is that there may arise version conflicts
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| 27 | * between parties.
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| 28 | * <li>Stand-alone runner does NOT enforce the time deadline. Parties may
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| 29 | * continue running indefinitely and thus bog down the JVM and stalling
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| 30 | * tournaments.
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| 31 | * </ul>
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| 32 | */
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| 33 | public class Runner implements Runnable {
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| 34 | private final static ObjectMapper jackson = new ObjectMapper();
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| 35 |
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| 36 | private final NegoSettings settings;
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| 37 | private final NegoProtocol protocol;
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| 38 | private final ClassPathConnectionFactory connectionfactory;
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| 39 | protected final Reporter log;
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| 40 | private boolean properlyStopped = false;
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| 41 | private final int LOOPTIME = 200;// ms
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| 42 | private final int FINALWAITTIME = 5000;// ms
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| 43 | private long maxruntime;
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| 44 |
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| 45 | /**
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| 46 | *
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| 47 | * @param settings the {@link NegoSettings}
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| 48 | * @param connectionfactory the {@link ProtocolToPartyConnFactory}
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| 49 | * @param logger the {@link Reporter} to log problems
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| 50 | * @param maxruntime limit in millisecs. Ignored if 0
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| 51 | */
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| 52 | public Runner(NegoSettings settings,
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| 53 | ClassPathConnectionFactory connectionfactory, Reporter logger,
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| 54 | long maxruntime) {
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| 55 | if (settings == null || connectionfactory == null) {
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| 56 | throw new NullPointerException("Arguments must be not null");
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| 57 | }
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| 58 | this.settings = settings;
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| 59 | this.log = logger;
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| 60 | this.protocol = settings.getProtocol(log);
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| 61 | this.connectionfactory = connectionfactory;
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| 62 | this.maxruntime = maxruntime;
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| 63 | }
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| 64 |
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| 65 | /**
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| 66 | *
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| 67 | * @return true if the runner has finished
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| 68 | */
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| 69 | public boolean isProperlyStopped() {
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| 70 | return properlyStopped;
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| 71 | }
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| 72 |
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| 73 | @Override
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| 74 | public void run() {
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| 75 | protocol.addListener(evt -> handle(evt));
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| 76 | protocol.start(connectionfactory);
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| 77 | long remainingtime = maxruntime;
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| 78 | while (!properlyStopped && (maxruntime == 0 || remainingtime > 0)) {
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| 79 | try {
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| 80 | Thread.sleep(LOOPTIME);
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| 81 | remainingtime -= LOOPTIME;
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| 82 | } catch (InterruptedException e) {
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| 83 | e.printStackTrace();
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| 84 | }
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| 85 | }
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| 86 | log.log(Level.INFO, "Waiting for connection closure");
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| 87 |
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| 88 | remainingtime = FINALWAITTIME;
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| 89 | while (remainingtime > 0
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| 90 | && !connectionfactory.getOpenConnections().isEmpty()) {
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| 91 | try {
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| 92 | Thread.sleep(LOOPTIME);
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| 93 | remainingtime -= LOOPTIME;
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| 94 | } catch (InterruptedException e) {
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| 95 | e.printStackTrace();
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| 96 | }
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| 97 | }
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| 98 | List<BasicConnection> openconn = connectionfactory.getOpenConnections();
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| 99 | if (!openconn.isEmpty())
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| 100 | log.log(Level.WARNING, "Connections " + openconn
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| 101 | + " did not close properly at end of run");
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| 102 | log.log(Level.INFO, "end run");
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| 103 | }
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| 104 |
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| 105 | private void handle(ProtocolEvent evt) {
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| 106 | if (evt instanceof CurrentNegoState && ((CurrentNegoState) evt)
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| 107 | .getState().isFinal(System.currentTimeMillis())) {
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| 108 | stop();
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| 109 | }
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| 110 | }
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| 111 |
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| 112 | protected void stop() {
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| 113 | logFinal(Level.INFO, protocol.getState());
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| 114 | properlyStopped = true;
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| 115 | }
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| 116 |
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| 117 | /**
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| 118 | * Separate so that we can intercept this when mocking, as this will crash
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| 119 | * on mocks because {@link #jackson} can not handle mocks.
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| 120 | *
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| 121 | * @param level the log {@link Level}
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| 122 | * @param state the {@link NegoState} to log
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| 123 | */
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| 124 | protected void logFinal(Level level, NegoState state) {
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| 125 | try {
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| 126 | log.log(level, "protocol ended normally: "
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| 127 | + jackson.writeValueAsString(protocol.getState()));
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| 128 | } catch (JsonProcessingException e) {
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| 129 | e.printStackTrace();
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| 130 | }
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| 131 | }
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| 132 |
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| 133 | /**
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| 134 | * @return protocol that runs/ran the session.
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| 135 | */
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| 136 | public NegoProtocol getProtocol() {
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| 137 | return protocol;
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| 138 | }
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| 139 | }
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