Notion of config operators:
Added operator for combining configuration info for Optical ports
from various sources. Also includes minor tweaks to OpticalPortConfig,
and javadoc fixes.
Change-Id: I754b2e29f560b473d1f791025f8b8b18c8d75a13
diff --git a/core/net/src/main/java/org/onosproject/net/device/impl/OpticalPortOperator.java b/core/net/src/main/java/org/onosproject/net/device/impl/OpticalPortOperator.java
new file mode 100644
index 0000000..9fa452a
--- /dev/null
+++ b/core/net/src/main/java/org/onosproject/net/device/impl/OpticalPortOperator.java
@@ -0,0 +1,140 @@
+/*
+ * 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 org.onosproject.incubator.net.config.ConfigOperator;
+import org.onosproject.incubator.net.config.basics.OpticalPortConfig;
+import org.onosproject.net.AnnotationKeys;
+import org.onosproject.net.DefaultAnnotations;
+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.valueOf(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.valueOf(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()) ? true : false;
+
+ 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:
+ return new DefaultPortDescription(port, descr.isEnabled(), descr.type(),
+ descr.portSpeed(), sa);
+ default:
+ // this includes copper ports.
+ 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());
+ }
+}