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Merge "Adding synchronous behaviour to the calendar REST API to wait until intent is in parked state. Needs testing."

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Thomas Vachuska 2014-11-11 19:59:20 -08:00 committed by Gerrit Code Review
commit ecd89261be
1 changed files with 76 additions and 16 deletions
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76
apps/calendar/src/main/java/org/onlab/onos/calendar/BandwidthCalendarResource.java
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@ -16,14 +16,24 @@
package org.onlab.onos.calendar;
import java.net.URI;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.onlab.onos.net.ConnectPoint;
import org.onlab.onos.net.DeviceId;
import org.onlab.onos.net.intent.Intent;
import org.onlab.onos.net.intent.IntentEvent;
import org.onlab.onos.net.intent.IntentId;
import org.onlab.onos.net.intent.IntentListener;
import org.onlab.onos.net.intent.IntentService;
import org.onlab.onos.net.intent.IntentState;
import org.onlab.rest.BaseResource;
import javax.ws.rs.POST;
import javax.ws.rs.DELETE;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Response;
import org.onlab.onos.core.ApplicationId;
import org.onlab.onos.core.CoreService;
import org.onlab.onos.net.flow.DefaultTrafficSelector;
@ -31,10 +41,15 @@ import org.onlab.onos.net.flow.TrafficSelector;
import org.onlab.onos.net.flow.TrafficTreatment;
import org.onlab.onos.net.intent.PointToPointIntent;
import org.onlab.packet.Ethernet;
import static org.onlab.onos.net.PortNumber.portNumber;
import static org.onlab.onos.net.flow.DefaultTrafficTreatment.builder;
import static org.onlab.onos.net.intent.IntentState.FAILED;
import static org.onlab.onos.net.intent.IntentState.INSTALLED;
import static org.onlab.onos.net.intent.IntentState.WITHDRAWN;
import static org.slf4j.LoggerFactory.getLogger;
import org.slf4j.Logger;
/**
@ -44,6 +59,7 @@ import org.slf4j.Logger;
public class BandwidthCalendarResource extends BaseResource {
private static final Logger log = getLogger(BandwidthCalendarResource.class);
private static final long TIMEOUT = 5; // seconds
@javax.ws.rs.Path("/{src}/{dst}/{srcPort}/{dstPort}/{bandwidth}")
@POST
@ -68,24 +84,38 @@ public class BandwidthCalendarResource extends BaseResource {
PointToPointIntent intentP2P =
new PointToPointIntent(appId(), selector, treatment,
srcPoint, dstPoint);
service.submit(intentP2P);
log.info("Submitted Calendar App intent: src = " + src + "dest = " + dst
+ "srcPort = " + srcPort + "destPort" + dstPort + "intentID = " + intentP2P.id().toString());
String reply = intentP2P.id().toString() + "\n";
CountDownLatch latch = new CountDownLatch(1);
InternalIntentListener listener = new InternalIntentListener(intentP2P, service, latch);
service.addListener(listener);
service.submit(intentP2P);
try {
if (latch.await(TIMEOUT, TimeUnit.SECONDS)) {
log.info("Submitted Calendar App intent: src = {}; dst = {}; " +
"srcPort = {}; dstPort = {}; intentID = {}",
src, dst, srcPort, dstPort, intentP2P.id());
String reply = intentP2P.id() + " " + listener.getState() + "\n";
return Response.ok(reply).build();
}
} catch (InterruptedException e) {
log.warn("Interrupted while waiting for intent {} status", intentP2P.id());
}
return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
}
@javax.ws.rs.Path("/cancellation/{intentId}")
@DELETE
public Response withdrawIntent(@PathParam("intentId") String intentId) {
log.info("Receiving Teardown request...");
log.info("Withdraw intentId = {} ", intentId);
log.info("Receiving Teardown request for {}", intentId);
IntentService service = get(IntentService.class);
Intent intent = service.getIntent(IntentId.valueOf(Long.parseLong(intentId)));
if (intent != null) {
service.withdraw(intent);
String reply = "ok\n";
return Response.ok(reply).build();
}
return Response.status(Response.Status.NOT_FOUND).build();
}
@javax.ws.rs.Path("/modification/{intentId}/{bandwidth}")
@POST
@ -115,4 +145,34 @@ public class BandwidthCalendarResource extends BaseResource {
protected ApplicationId appId() {
return get(CoreService.class).registerApplication("org.onlab.onos.calendar");
}
// Auxiliary listener to wait until the given intent reaches the installed or failed states.
private final class InternalIntentListener implements IntentListener {
private final Intent intent;
private final IntentService service;
private final CountDownLatch latch;
private IntentState state;
private InternalIntentListener(Intent intent, IntentService service,
CountDownLatch latch) {
this.intent = intent;
this.service = service;
this.latch = latch;
}
@Override
public void event(IntentEvent event) {
if (event.subject().equals(intent)) {
state = service.getIntentState(intent.id());
if (state == INSTALLED || state == FAILED || state == WITHDRAWN) {
latch.countDown();
}
service.removeListener(this);
}
}
public IntentState getState() {
return state;
}
}
}