| package org.onlab.onos.net.trivial.impl; |
| |
| import static org.onlab.onos.net.flow.FlowRuleEvent.Type.RULE_ADDED; |
| import static org.onlab.onos.net.flow.FlowRuleEvent.Type.RULE_REMOVED; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Service; |
| import org.onlab.onos.net.DeviceId; |
| import org.onlab.onos.net.flow.FlowRule; |
| import org.onlab.onos.net.flow.FlowRuleEvent; |
| import org.onlab.onos.net.flow.FlowRuleEvent.Type; |
| import org.onlab.onos.net.flow.FlowRuleStore; |
| import org.slf4j.Logger; |
| |
| import com.google.common.collect.ArrayListMultimap; |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Multimap; |
| |
| /** |
| * Manages inventory of flow rules using trivial in-memory implementation. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class SimpleFlowRuleStore implements FlowRuleStore { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| // store entries as a pile of rules, no info about device tables |
| private final Multimap<DeviceId, FlowRule> flowEntries = ArrayListMultimap.create(); |
| |
| @Activate |
| public void activate() { |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public Iterable<FlowRule> getFlowEntries(DeviceId deviceId) { |
| return ImmutableSet.copyOf(flowEntries.get(deviceId)); |
| } |
| |
| @Override |
| public void storeFlowRule(FlowRule rule) { |
| DeviceId did = rule.deviceId(); |
| flowEntries.put(did, rule); |
| } |
| |
| @Override |
| public void deleteFlowRule(FlowRule rule) { |
| DeviceId did = rule.deviceId(); |
| |
| /* |
| * find the rule and mark it for deletion. |
| * Ultimately a flow removed will come remove it. |
| */ |
| |
| if (flowEntries.containsEntry(did, rule)) { |
| synchronized (flowEntries) { |
| |
| flowEntries.remove(did, rule); |
| flowEntries.put(did, rule); |
| } |
| } |
| } |
| |
| @Override |
| public FlowRuleEvent addOrUpdateFlowRule(FlowRule rule) { |
| DeviceId did = rule.deviceId(); |
| |
| // check if this new rule is an update to an existing entry |
| if (flowEntries.containsEntry(did, rule)) { |
| synchronized (flowEntries) { |
| // Multimaps support duplicates so we have to remove our rule |
| // and replace it with the current version. |
| |
| flowEntries.remove(did, rule); |
| flowEntries.put(did, rule); |
| } |
| return new FlowRuleEvent(Type.RULE_UPDATED, rule); |
| } |
| |
| flowEntries.put(did, rule); |
| return new FlowRuleEvent(RULE_ADDED, rule); |
| } |
| |
| @Override |
| public FlowRuleEvent removeFlowRule(FlowRule rule) { |
| synchronized (this) { |
| if (flowEntries.remove(rule.deviceId(), rule)) { |
| return new FlowRuleEvent(RULE_REMOVED, rule); |
| } else { |
| return null; |
| } |
| } |
| } |
| |
| |
| |
| } |