| 1 | package org.dcache.cells; |
| 2 | |
| 3 | import java.util.Map; |
| 4 | |
| 5 | import org.dcache.commons.stats.RequestCounterImpl; |
| 6 | import org.dcache.commons.stats.RequestExecutionTimeGauge; |
| 7 | import org.dcache.commons.stats.RequestCounters; |
| 8 | import org.dcache.commons.stats.RequestExecutionTimeGauges; |
| 9 | |
| 10 | import diskCacheV111.vehicles.Message; |
| 11 | |
| 12 | import dmg.util.Args; |
| 13 | import dmg.cells.nucleus.CellMessage; |
| 14 | import dmg.cells.nucleus.NoRouteToCellException; |
| 15 | import dmg.cells.nucleus.SerializationException; |
| 16 | import dmg.cells.nucleus.CellEndpoint; |
| 17 | import dmg.cells.nucleus.CellInfo; |
| 18 | import dmg.cells.nucleus.CellMessageAnswerable; |
| 19 | |
| 20 | public class MessageProcessingMonitor |
| 21 | implements CellCommandListener, CellMessageSender |
| 22 | { |
| 23 | /** |
| 24 | * Request counters used to count message processing. |
| 25 | */ |
| 26 | private final RequestCounters<Class> _counters; |
| 27 | |
| 28 | /** |
| 29 | * Request gauges used to measure message processing. |
| 30 | */ |
| 31 | private final RequestExecutionTimeGauges<Class> _gauges; |
| 32 | |
| 33 | private CellEndpoint _endpoint; |
| 34 | |
| 35 | /** |
| 36 | * If true then message processing will be monitored and |
| 37 | * administrative commands to query the monitoring results are |
| 38 | * activated. |
| 39 | */ |
| 40 | private boolean _enabled; |
| 41 | |
| 42 | public MessageProcessingMonitor() |
| 43 | { |
| 44 | _counters = new RequestCounters<Class>("Messages"); |
| 45 | _gauges = new RequestExecutionTimeGauges<Class>("Messages"); |
| 46 | _enabled = false; |
| 47 | } |
| 48 | |
| 49 | @Override |
| 50 | public void setCellEndpoint(CellEndpoint endpoint) |
| 51 | { |
| 52 | _endpoint = endpoint; |
| 53 | } |
| 54 | |
| 55 | public void setEnabled(boolean enabled) |
| 56 | { |
| 57 | _enabled = enabled; |
| 58 | } |
| 59 | |
| 60 | public boolean isEnabled() |
| 61 | { |
| 62 | return _enabled; |
| 63 | } |
| 64 | |
| 65 | public CellEndpoint getReplyCellEndpoint(CellMessage envelope) |
| 66 | { |
| 67 | if (_enabled) { |
| 68 | Class type = envelope.getMessageObject().getClass(); |
| 69 | return new MonitoringReplyCellEndpoint(type); |
| 70 | } else { |
| 71 | return _endpoint; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | public final static String hh_monitoring_enable = |
| 76 | "# Enables monitoring of message processing"; |
| 77 | public String ac_monitoring_enable(Args args) |
| 78 | { |
| 79 | _enabled = true; |
| 80 | return ""; |
| 81 | } |
| 82 | |
| 83 | public final static String hh_monitoring_disable = |
| 84 | "# Disables monitoring of message processing"; |
| 85 | public String ac_monitoring_disable(Args args) |
| 86 | { |
| 87 | _enabled = false; |
| 88 | return ""; |
| 89 | } |
| 90 | |
| 91 | public final static String hh_monitoring_info = |
| 92 | "# Provides information about message processing"; |
| 93 | public String ac_monitoring_info(Args args) |
| 94 | { |
| 95 | return _counters.toString() + "\n\n" + _gauges.toString(); |
| 96 | } |
| 97 | |
| 98 | public class MonitoringReplyCellEndpoint implements CellEndpoint |
| 99 | { |
| 100 | private final Class _type; |
| 101 | private final long _startTime; |
| 102 | |
| 103 | public MonitoringReplyCellEndpoint(Class type) |
| 104 | { |
| 105 | _startTime = System.currentTimeMillis(); |
| 106 | _type = type; |
| 107 | _counters.incrementRequests(_type); |
| 108 | } |
| 109 | |
| 110 | public void sendMessage(CellMessage envelope) |
| 111 | throws SerializationException, |
| 112 | NoRouteToCellException |
| 113 | { |
| 114 | boolean success = false; |
| 115 | try { |
| 116 | _endpoint.sendMessage(envelope); |
| 117 | success = true; |
| 118 | } finally { |
| 119 | _gauges.update(_type, System.currentTimeMillis() - _startTime); |
| 120 | Object o = envelope.getMessageObject(); |
| 121 | if (!success || o instanceof Exception || |
| 122 | (o instanceof Message) && ((Message) o).getReturnCode() != 0) { |
| 123 | _counters.incrementFailed(_type); |
| 124 | } |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | public void sendMessage(CellMessage envelope, |
| 129 | CellMessageAnswerable callback, |
| 130 | long timeout) |
| 131 | { |
| 132 | throw new UnsupportedOperationException("Cannot use callback for reply"); |
| 133 | } |
| 134 | |
| 135 | public CellMessage sendAndWait(CellMessage envelope, long timeout) |
| 136 | { |
| 137 | throw new UnsupportedOperationException("Cannot use blocking send for reply"); |
| 138 | } |
| 139 | |
| 140 | public CellMessage sendAndWaitToPermanent(CellMessage envelope, long timeout) |
| 141 | { |
| 142 | throw new UnsupportedOperationException("Cannot use blocking send for reply"); |
| 143 | } |
| 144 | |
| 145 | public CellInfo getCellInfo() |
| 146 | { |
| 147 | return _endpoint.getCellInfo(); |
| 148 | } |
| 149 | |
| 150 | public Map<String,Object> getDomainContext() |
| 151 | { |
| 152 | return _endpoint.getDomainContext(); |
| 153 | } |
| 154 | |
| 155 | public Args getArgs() |
| 156 | { |
| 157 | return _endpoint.getArgs(); |
| 158 | } |
| 159 | } |
| 160 | } |