/**
* Copyright 2011, Big Switch Networks, Inc.
* Originally created by David Erickson, Stanford University
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
**/
package net.floodlightcontroller.core.web;
import java.net.SocketAddress;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Collection;
import net.floodlightcontroller.core.IFloodlightProviderService;
import net.floodlightcontroller.core.IOFSwitch;
import net.floodlightcontroller.core.ImmutablePort;
import net.floodlightcontroller.util.FilterIterator;
import org.openflow.protocol.OFPhysicalPort;
import org.openflow.util.HexString;
import org.restlet.data.Form;
import org.restlet.data.Status;
import org.restlet.resource.Get;
import org.restlet.resource.ServerResource;
/**
* Get a list of switches connected to the controller
* @author readams
*/
public class ControllerSwitchesResource extends ServerResource {
/**
* A wrapper class around IOFSwitch that defines the REST serialization
* fields. Could have written a Jackson serializer but this is easier.
*/
public static class SwitchJsonSerializerWrapper {
private final IOFSwitch sw;
public SwitchJsonSerializerWrapper(IOFSwitch sw) {
this.sw = sw;
}
public int getActions() {
return sw.getActions();
}
public Map<Object, Object> getAttributes() {
return sw.getAttributes();
}
public Map<String,String> getDescription() {
Map<String,String> rv = new HashMap<String, String>();
if (sw.getDescriptionStatistics() == null) {
rv.put("manufacturer", "");
rv.put("hardware", "");
rv.put("software", "");
rv.put("serialNum", "");
rv.put("datapath", "");
} else {
rv.put("manufacturer",
sw.getDescriptionStatistics().getManufacturerDescription());
rv.put("hardware",
sw.getDescriptionStatistics().getHardwareDescription());
rv.put("software",
sw.getDescriptionStatistics().getSoftwareDescription());
rv.put("serialNum",
sw.getDescriptionStatistics().getSerialNumber());
rv.put("datapath",
sw.getDescriptionStatistics().getDatapathDescription());
}
return rv;
}
public int getBuffers() {
return sw.getBuffers();
}
public int getCapabilities() {
return sw.getCapabilities();
}
public long getConnectedSince() {
if (sw.getConnectedSince() == null)
return 0;
return sw.getConnectedSince().getTime();
}
public String getDpid() {
return sw.getStringId();
}
public String getHarole() {
if (sw.getHARole() == null)
return "null";
return sw.getHARole().toString();
}
public String getInetAddress() {
SocketAddress addr = sw.getInetAddress();
if (addr == null)
return null;
return addr.toString();
}
public Collection<OFPhysicalPort> getPorts() {
return ImmutablePort.ofPhysicalPortListOf(sw.getPorts());
}
}
/**
* Wraps an iterator of IOFSwitch into an iterator of
* SwitchJsonSerializerWrapper
* @author gregor
*/
private static class SwitchJsonSerializerWrapperIterator
implements Iterator<SwitchJsonSerializerWrapper> {
private final Iterator<IOFSwitch> iter;
public SwitchJsonSerializerWrapperIterator(Iterator<IOFSwitch> iter) {
this.iter = iter;
}
@Override
public boolean hasNext() {
return this.iter.hasNext();
}
@Override
public SwitchJsonSerializerWrapper next() {
return new SwitchJsonSerializerWrapper(iter.next());
}
@Override
public void remove() {
this.iter.remove();
}
}
public static final String DPID_ERROR =
"Invalid Switch DPID: must be a 64-bit quantity, expressed in " +
"hex as AA:BB:CC:DD:EE:FF:00:11";
@Get("json")
public Iterator<SwitchJsonSerializerWrapper> retrieve() {
IFloodlightProviderService floodlightProvider =
(IFloodlightProviderService)getContext().getAttributes().
get(IFloodlightProviderService.class.getCanonicalName());
Long switchDPID = null;
Form form = getQuery();
String dpid = form.getFirstValue("dpid", true);
if (dpid != null) {
try {
switchDPID = HexString.toLong(dpid);
} catch (Exception e) {
setStatus(Status.CLIENT_ERROR_BAD_REQUEST, DPID_ERROR);
return null;
}
}
if (switchDPID != null) {
IOFSwitch sw =
floodlightProvider.getSwitch(switchDPID);
if (sw != null) {
SwitchJsonSerializerWrapper wrappedSw =
new SwitchJsonSerializerWrapper(sw);
return Collections.singleton(wrappedSw).iterator();
}
return Collections.<SwitchJsonSerializerWrapper>emptySet().iterator();
}
final String dpidStartsWith =
form.getFirstValue("dpid__startswith", true);
Iterator<IOFSwitch> iofSwitchIter =
floodlightProvider.getAllSwitchMap().values().iterator();
Iterator<SwitchJsonSerializerWrapper> switer =
new SwitchJsonSerializerWrapperIterator(iofSwitchIter);
if (dpidStartsWith != null) {
return new FilterIterator<SwitchJsonSerializerWrapper>(switer) {
@Override
protected boolean matches(SwitchJsonSerializerWrapper value) {
return value.getDpid().startsWith(dpidStartsWith);
}
};
}
return switer;
}
}