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/*
* Copyright 2014-2015 Open Networking Laboratory
*
* 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 org.onosproject.net.device.impl;
import static org.slf4j.LoggerFactory.getLogger;
import static com.google.common.base.Preconditions.checkNotNull;
import org.onosproject.net.config.ConfigOperator;
import org.onosproject.net.config.basics.OpticalPortConfig;
import org.onosproject.net.AnnotationKeys;
import org.onosproject.net.DefaultAnnotations;
import org.onosproject.net.OchPort;
import org.onosproject.net.OduCltPort;
import org.onosproject.net.OmsPort;
import org.onosproject.net.Port;
import org.onosproject.net.PortNumber;
import org.onosproject.net.SparseAnnotations;
import org.onosproject.net.device.DefaultPortDescription;
import org.onosproject.net.device.OchPortDescription;
import org.onosproject.net.device.OduCltPortDescription;
import org.onosproject.net.device.OmsPortDescription;
import org.onosproject.net.device.PortDescription;
import org.slf4j.Logger;
/**
* Implementations of merge policies for various sources of optical port
* configuration information. This includes applications, provides, and network
* configurations.
*/
public final class OpticalPortOperator implements ConfigOperator {
private static final Logger log = getLogger(OpticalPortOperator.class);
private OpticalPortOperator() {
}
/**
* Generates a PortDescription containing fields from a PortDescription and
* an OpticalPortConfig.
*
* @param opc the port config entity from network config
* @param descr a PortDescription
* @return PortDescription based on both sources
*/
public static PortDescription combine(OpticalPortConfig opc, PortDescription descr) {
if (opc == null) {
return descr;
}
PortNumber port = descr.portNumber();
final String name = opc.name();
final String numName = opc.numberName();
// if the description is null, or the current description port name != config name,
// create a new PortNumber.
PortNumber newPort = null;
if (port == null) {
// try to get the portNumber from the numName.
if (!numName.isEmpty()) {
final long pn = Long.parseLong(numName);
newPort = (!name.isEmpty()) ? PortNumber.portNumber(pn, name) : PortNumber.portNumber(pn);
} else {
// we don't have defining info (a port number value)
throw new RuntimeException("Possible misconfig, bailing on handling for: \n\t" + descr);
}
} else if ((!name.isEmpty()) && !name.equals(port.name())) {
final long pn = (numName.isEmpty()) ? port.toLong() : Long.parseLong(numName);
newPort = PortNumber.portNumber(pn, name);
}
// Port type won't change unless we're overwriting a port completely.
// Watch out for overwrites to avoid class cast craziness.
boolean noOwrite = opc.type() == descr.type();
SparseAnnotations sa = combine(opc, descr.annotations());
if (noOwrite) {
return updateDescription((newPort == null) ? port : newPort, sa, descr);
} else {
// TODO: must reconstruct a different type of PortDescription.
log.info("Type rewrite from {} to {} required", descr.type(), opc.type());
}
return descr;
}
// updates a port description whose port type has not changed.
private static PortDescription updateDescription(
PortNumber port, SparseAnnotations sa, PortDescription descr) {
switch (descr.type()) {
case OMS:
OmsPortDescription oms = (OmsPortDescription) descr;
return new OmsPortDescription(port, oms.isEnabled(), oms.minFrequency(),
oms.maxFrequency(), oms.grid(), sa);
case OCH:
// We might need to update lambda below with STATIC_LAMBDA.
OchPortDescription och = (OchPortDescription) descr;
return new OchPortDescription(port, och.isEnabled(), och.signalType(),
och.isTunable(), och.lambda(), sa);
case ODUCLT:
OduCltPortDescription odu = (OduCltPortDescription) descr;
return new OduCltPortDescription(port, odu.isEnabled(), odu.signalType(), sa);
case PACKET:
case FIBER:
case COPPER:
return new DefaultPortDescription(port, descr.isEnabled(), descr.type(),
descr.portSpeed(), sa);
default:
log.warn("Unsupported optical port type {} - can't update", descr.type());
return descr;
}
}
/**
* Generates an annotation from an existing annotation and OptcalPortConfig.
*
* @param opc the port config entity from network config
* @param an the annotation
* @return annotation combining both sources
*/
public static SparseAnnotations combine(OpticalPortConfig opc, SparseAnnotations an) {
DefaultAnnotations.Builder b = DefaultAnnotations.builder();
if (!opc.staticPort().isEmpty()) {
b.set(AnnotationKeys.STATIC_PORT, opc.staticPort());
}
if (opc.staticLambda().isPresent()) {
b.set(AnnotationKeys.STATIC_LAMBDA, String.valueOf(opc.staticLambda().get()));
}
// The following may not need to be carried.
if (!opc.name().isEmpty()) {
b.set(AnnotationKeys.PORT_NAME, opc.name());
}
return DefaultAnnotations.union(an, b.build());
}
/**
* Returns a description built from an existing port.
*
* @param port the device port
* @return a PortDescription based on the port
*/
public static PortDescription descriptionOf(Port port) {
checkNotNull(port, "Must supply non-null Port");
final boolean isUp = port.isEnabled();
return descriptionOfPort(port, isUp);
}
/**
* Returns a description built from an existing port and reported status.
*
* @param port port
* @param isEnabled true if enabled
* @return a PortDescription based on the port
*/
static PortDescription descriptionOf(Port port, boolean isEnabled) {
checkNotNull(port, "Must supply non-null Port");
final boolean isup = isEnabled;
return descriptionOfPort(port, isup);
}
private static PortDescription descriptionOfPort(Port port, final boolean isup) {
final PortNumber ptn = port.number();
final SparseAnnotations an = (SparseAnnotations) port.annotations();
switch (port.type()) {
case OMS:
OmsPort oms = (OmsPort) port;
return new OmsPortDescription(ptn, isup, oms.minFrequency(),
oms.maxFrequency(), oms.grid(), an);
case OCH:
OchPort och = (OchPort) port;
return new OchPortDescription(ptn, isup, och.signalType(),
och.isTunable(), och.lambda(), an);
case ODUCLT:
OduCltPort odu = (OduCltPort) port;
return new OduCltPortDescription(ptn, isup, odu.signalType(), an);
default:
return new DefaultPortDescription(ptn, isup, port.type(), port.portSpeed(), an);
}
}
}
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