private List<OFAction> buildActions(List<Instruction> treatments) {
if (treatment == null) {
return Collections.emptyList();
}
boolean tableFound = false;
List<OFAction> actions = new LinkedList<>();
for (Instruction i : treatments) {
switch (i.type()) {
case DROP:
case NOACTION:
return Collections.emptyList();
case L0MODIFICATION:
actions.add(buildL0Modification(i));
break;
case L2MODIFICATION:
actions.add(buildL2Modification(i));
break;
case L3MODIFICATION:
actions.add(buildL3Modification(i));
break;
case L4MODIFICATION:
actions.add(buildL4Modification(i));
break;
case OUTPUT:
OutputInstruction out = (OutputInstruction) i;
OFActionOutput.Builder action =
factory().actions().buildOutput().setPort(OFPort.of((int) out.port().toLong()));
if (out.port().equals(PortNumber.CONTROLLER)) {
action.setMaxLen(OFPCML_NO_BUFFER);
}
actions.add(action.build());
break;
case GROUP:
GroupInstruction group = (GroupInstruction) i;
OFActionGroup.Builder groupBuilder =
factory().actions().buildGroup().setGroup(OFGroup.of(group.groupId().id()));
actions.add(groupBuilder.build());
break;
case TABLE:
// FIXME: should not occur here.
tableFound = true;
break;
default:
log.warn("Instruction type {} not yet implemented.", i.type());
}
}
if (tableFound && actions.isEmpty()) {
// handles the case where there are no actions, but there is
// a goto instruction for the next table
return Collections.emptyList();
}
return actions;
}
@Override
public void emit(OutboundPacket packet) {
DeviceId devId = packet.sendThrough();
String scheme = devId.toString().split(":")[0];
if (!scheme.equals(this.id().scheme())) {
throw new IllegalArgumentException("Don't know how to handle Device with scheme " + scheme);
}
Dpid dpid = Dpid.dpid(devId.uri());
OpenFlowSwitch sw = controller.getSwitch(dpid);
if (sw == null) {
log.warn("Device {} isn't available?", devId);
return;
}
// Ethernet eth = new Ethernet();
// eth.deserialize(packet.data().array(), 0, packet.data().array().length);
OFPortDesc p = null;
for (Instruction inst : packet.treatment().allInstructions()) {
if (inst.type().equals(Instruction.Type.OUTPUT)) {
p = portDesc(((OutputInstruction) inst).port());
OFPacketOut po = packetOut(sw, packet.data().array(), p.getPortNo());
sw.sendMsg(po);
}
}
}
private PortNumber getOutput(FlowRule rule) {
for (Instruction i : rule.treatment().allInstructions()) {
if (i.type() == Instruction.Type.OUTPUT) {
Instructions.OutputInstruction out = (Instructions.OutputInstruction) i;
return out.port();
}
}
return null;
}
private void sendPacket(Ethernet eth) {
List<Instruction> ins = treatmentBuilder().build().instructions();
OFPort p = null;
// TODO: support arbitrary list of treatments must be supported in ofPacketContext
for (Instruction i : ins) {
if (i.type() == Type.OUTPUT) {
p = buildPort(((OutputInstruction) i).port());
break; // for now...
}
}
if (eth == null) {
ofPktCtx.build(p);
} else {
ofPktCtx.build(eth, p);
}
ofPktCtx.send();
}
@Override
public boolean matchesSafely(JsonNode jsonInstruction, Description description) {
// check type
final JsonNode jsonTypeNode = jsonInstruction.get("type");
final String jsonType = jsonTypeNode.textValue();
final String type = instruction.type().name();
if (!jsonType.equals(type)) {
description.appendText("type was " + type);
return false;
}
if (instruction instanceof ModMplsHeaderInstruction) {
return matchModMplsHeaderInstruction(jsonInstruction, description);
} else if (instruction instanceof OutputInstruction) {
return matchOutputInstruction(jsonInstruction, description);
} else if (instruction instanceof GroupInstruction) {
return matchGroupInstruction(jsonInstruction, description);
} else if (instruction instanceof MeterInstruction) {
return matchMeterInstruction(jsonInstruction, description);
} else if (instruction instanceof SetQueueInstruction) {
return matchSetQueueInstruction(jsonInstruction, description);
} else if (instruction instanceof ModOchSignalInstruction) {
return matchModOchSingalInstruction(jsonInstruction, description);
} else if (instruction instanceof ModEtherInstruction) {
return matchModEtherInstruction(jsonInstruction, description);
} else if (instruction instanceof ModVlanIdInstruction) {
return matchModVlanIdInstruction(jsonInstruction, description);
} else if (instruction instanceof ModVlanPcpInstruction) {
return matchModVlanPcpInstruction(jsonInstruction, description);
} else if (instruction instanceof ModIPInstruction) {
return matchModIpInstruction(jsonInstruction, description);
} else if (instruction instanceof ModIPv6FlowLabelInstruction) {
return matchModIPv6FlowLabelInstruction(jsonInstruction, description);
} else if (instruction instanceof ModMplsLabelInstruction) {
return matchModMplsLabelInstruction(jsonInstruction, description);
} else if (instruction instanceof ModOduSignalIdInstruction) {
return matchModOduSingalIdInstruction(jsonInstruction, description);
} else if (instruction instanceof NoActionInstruction) {
return true;
}
return false;
}