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Added device listener to fallback flow rule provider to trigger flow

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entries probe after device events

Helpful for devices that do not provide configuration persistency,
to quickly restore flow rules after a reboot or an update.

Change-Id: I35dee1ff56076ddda7d22c353a01d518f2f88eed
(cherry picked from commit 0969e6f2dad233980a49b5884e22286be0736b72)
This commit is contained in:
Carmelo Cascone 2016-06-02 09:45:47 -07:00
parent 91ba41a288
commit f4363a077a
1 changed files with 27 additions and 2 deletions
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29
core/net/src/main/java/org/onosproject/net/flow/impl/FlowRuleDriverProvider.java
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@ -24,6 +24,8 @@ import org.onosproject.core.ApplicationId;
import org.onosproject.mastership.MastershipService;
import org.onosproject.net.Device;
import org.onosproject.net.DeviceId;
import org.onosproject.net.device.DeviceEvent;
import org.onosproject.net.device.DeviceListener;
import org.onosproject.net.device.DeviceService;
import org.onosproject.net.flow.CompletedBatchOperation;
import org.onosproject.net.flow.FlowRule;
@ -45,6 +47,7 @@ import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import static com.google.common.collect.ImmutableSet.copyOf;
import static org.onosproject.net.device.DeviceEvent.Type.*;
import static org.onosproject.net.flow.FlowRuleBatchEntry.FlowRuleOperation.*;
/**
@ -62,6 +65,7 @@ class FlowRuleDriverProvider extends AbstractProvider implements FlowRuleProvide
private DeviceService deviceService;
private MastershipService mastershipService;
private InternalDeviceListener deviceListener = new InternalDeviceListener();
private ScheduledExecutorService executor = Executors.newSingleThreadScheduledExecutor();
private ScheduledFuture<?> poller = null;
@ -87,6 +91,8 @@ class FlowRuleDriverProvider extends AbstractProvider implements FlowRuleProvide
this.deviceService = deviceService;
this.mastershipService = mastershipService;
deviceService.addListener(deviceListener);
if (poller != null && !poller.isCancelled()) {
poller.cancel(false);
}
@ -164,14 +170,33 @@ class FlowRuleDriverProvider extends AbstractProvider implements FlowRuleProvide
}
}
private void pollDeviceFlowEntries(Device device) {
providerService.pushFlowMetrics(device.id(), device.as(FlowRuleProgrammable.class).getFlowEntries());
}
private void pollFlowEntries() {
deviceService.getAvailableDevices().forEach(device -> {
if (mastershipService.isLocalMaster(device.id()) && device.is(FlowRuleProgrammable.class)) {
providerService.pushFlowMetrics(device.id(),
device.as(FlowRuleProgrammable.class).getFlowEntries());
pollDeviceFlowEntries(device);
}
});
}
private class InternalDeviceListener implements DeviceListener {
@Override
public void event(DeviceEvent event) {
executor.schedule(() -> pollDeviceFlowEntries(event.subject()), 0, TimeUnit.SECONDS);
}
@Override
public boolean isRelevant(DeviceEvent event) {
Device device = event.subject();
return mastershipService.isLocalMaster(device.id()) && device.is(FlowRuleProgrammable.class) &&
(event.type() == DEVICE_ADDED ||
event.type() == DEVICE_UPDATED ||
(event.type() == DEVICE_AVAILABILITY_CHANGED && deviceService.isAvailable(device.id())));
}
}
}