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package net.sf.snmpadaptor4j.core.trap; |
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import java.net.InetAddress; |
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import java.util.ArrayList; |
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import java.util.List; |
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import java.util.Timer; |
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import java.util.TimerTask; |
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import org.apache.log4j.Logger; |
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import net.sf.snmpadaptor4j.SnmpManagerConfiguration; |
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import net.sf.snmpadaptor4j.api.SnmpApiFactory; |
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import net.sf.snmpadaptor4j.api.SnmpTrapSender; |
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import net.sf.snmpadaptor4j.object.SnmpTrap; |
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public class SnmpManagers { |
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private static final long CONNECTION_DURATION = 30000; |
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28 | 2 | final class ClosingTask |
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extends TimerTask { |
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@Override |
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public void run () { |
37 | 4 | SnmpManagers.this.close(); |
38 | 4 | } |
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} |
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45 | 14 | protected final Logger logger = Logger.getLogger(SnmpManagers.class); |
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private final long connectionDuration; |
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55 | 14 | protected final List<SnmpTrapSender> senderList = new ArrayList<SnmpTrapSender>(); |
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private final SnmpApiFactory senderFactory; |
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65 | 14 | protected Timer timer = null; |
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70 | 14 | protected long closingTime = Long.MAX_VALUE; |
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public SnmpManagers (final SnmpApiFactory senderFactory) { |
77 | 11 | this(senderFactory, SnmpManagers.CONNECTION_DURATION); |
78 | 11 | } |
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protected SnmpManagers (final SnmpApiFactory senderFactory, final long connectionDuration) { |
86 | 14 | super(); |
87 | 14 | this.senderFactory = senderFactory; |
88 | 14 | this.connectionDuration = connectionDuration; |
89 | 14 | } |
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public final void initialize (final List<SnmpManagerConfiguration> managerList) throws Exception { |
97 | 4 | synchronized (this.senderList) { |
98 | 4 | this.senderList.clear(); |
99 | 4 | final InetAddress agentAddress = InetAddress.getLocalHost(); |
100 | 4 | this.logger.info("Local IP address (SNMP agent) = " + agentAddress); |
101 | 4 | for (final SnmpManagerConfiguration manager : managerList) { |
102 | 8 | this.logger.info("SNMP manager at " + manager.getAddress() + ":" + manager.getPort() + " (v" + manager.getVersion() + " - community " |
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+ manager.getCommunity() + ")"); |
104 | 8 | this.senderList.add(this.senderFactory.newSnmpTrapSender(agentAddress, manager.getAddress(), manager.getPort(), manager.getVersion(), |
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manager.getCommunity())); |
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} |
107 | 4 | } |
108 | 4 | } |
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public void send (final SnmpTrap trap) { |
115 | 5 | synchronized (this.senderList) { |
116 | 5 | if (this.logger.isDebugEnabled()) { |
117 | 3 | this.logger.debug("New " + trap + " to send"); |
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} |
119 | 5 | if (this.logger.isTraceEnabled()) { |
120 | 3 | trap.traceTo(this.logger); |
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} |
122 | 5 | for (final SnmpTrapSender sender : this.senderList) { |
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try { |
124 | 10 | if (!sender.isConnected()) { |
125 | 4 | sender.open(); |
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} |
127 | 10 | sender.send(trap); |
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} |
129 | 2 | catch (final Throwable e) { |
130 | 2 | this.logger.error("Unable to send a trap to the SNMP manager at " + sender.getName(), e); |
131 | 18 | } |
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} |
133 | 5 | this.closingTime = System.currentTimeMillis() + this.connectionDuration; |
134 | 5 | if (this.timer == null) { |
135 | 2 | this.timer = new Timer(); |
136 | 2 | this.timer.schedule(new ClosingTask(), this.connectionDuration, this.connectionDuration); |
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} |
138 | 5 | } |
139 | 5 | } |
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final void close () { |
145 | 6 | this.logger.trace("Checking Connections to the SNMP managers..."); |
146 | 6 | if (this.closingTime < System.currentTimeMillis()) { |
147 | 4 | synchronized (this.senderList) { |
148 | 4 | if (this.closingTime < System.currentTimeMillis()) { |
149 | 3 | this.logger.trace("Closing connections to the SNMP managers..."); |
150 | 3 | this.timer.cancel(); |
151 | 3 | this.timer = null; |
152 | 3 | this.closingTime = Long.MAX_VALUE; |
153 | 3 | for (final SnmpTrapSender sender : this.senderList) { |
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try { |
155 | 7 | if (sender.isConnected()) { |
156 | 6 | sender.close(); |
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} |
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} |
159 | 2 | catch (final Throwable e) { |
160 | 2 | this.logger.error("Unable to close the connection to the SNMP manager at " + sender.getName(), e); |
161 | 12 | } |
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} |
163 | 3 | this.logger.debug("Connections closed to the SNMP managers"); |
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} |
165 | 4 | } |
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} |
167 | 6 | } |
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@Override |
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public final String toString () { |
175 | 1 | return "SnmpManagers"; |
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} |
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} |