host config operator
Combination operator for host-related configuration information,
including tests.
Change-Id: I3631db111b7a1140badf1b9f323a3a5811ac7297
diff --git a/core/net/src/main/java/org/onosproject/net/host/impl/BasicHostOperator.java b/core/net/src/main/java/org/onosproject/net/host/impl/BasicHostOperator.java
new file mode 100644
index 0000000..9d0c1bd
--- /dev/null
+++ b/core/net/src/main/java/org/onosproject/net/host/impl/BasicHostOperator.java
@@ -0,0 +1,84 @@
+/*
+ * 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.host.impl;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+import org.slf4j.Logger;
+import org.onosproject.incubator.net.config.ConfigOperator;
+import org.onosproject.incubator.net.config.basics.BasicHostConfig;
+import org.onosproject.net.AnnotationKeys;
+import org.onosproject.net.DefaultAnnotations;
+import org.onosproject.net.SparseAnnotations;
+import org.onosproject.net.host.DefaultHostDescription;
+import org.onosproject.net.host.HostDescription;
+
+/**
+ * Implementations of merge policies for various sources of host configuration
+ * information. This includes applications, provides, and network configurations.
+ */
+public final class BasicHostOperator implements ConfigOperator {
+
+ protected static final double DEFAULT_COORD = -1.0;
+ private static final Logger log = getLogger(BasicHostOperator.class);
+
+ private BasicHostOperator() {
+ }
+
+ /**
+ * Generates a HostDescription containing fields from a HostDescription and
+ * a HostConfig.
+ *
+ * @param cfg the host config entity from network config
+ * @param descr a HostDescription
+ * @return HostDescription based on both sources
+ */
+ public static HostDescription combine(BasicHostConfig cfg, HostDescription descr) {
+ if (cfg == null) {
+ return descr;
+ }
+ SparseAnnotations sa = combine(cfg, descr.annotations());
+ return new DefaultHostDescription(descr.hwAddress(), descr.vlan(), descr.location(),
+ descr.ipAddress(), sa);
+ }
+
+ /**
+ * Generates an annotation from an existing annotation and HostConfig.
+ *
+ * @param cfg the device config entity from network config
+ * @param an the annotation
+ * @return annotation combining both sources
+ */
+ public static SparseAnnotations combine(BasicHostConfig cfg, SparseAnnotations an) {
+ DefaultAnnotations.Builder newBuilder = DefaultAnnotations.builder();
+ if (cfg.name() != null) {
+ newBuilder.set(AnnotationKeys.NAME, cfg.name());
+ }
+ if (cfg.latitude() != DEFAULT_COORD) {
+ newBuilder.set(AnnotationKeys.LATITUDE, Double.toString(cfg.latitude()));
+ }
+ if (cfg.longitude() != DEFAULT_COORD) {
+ newBuilder.set(AnnotationKeys.LONGITUDE, Double.toString(cfg.longitude()));
+ }
+ if (cfg.rackAddress() != null) {
+ newBuilder.set(AnnotationKeys.RACK_ADDRESS, cfg.rackAddress());
+ }
+ if (cfg.owner() != null) {
+ newBuilder.set(AnnotationKeys.OWNER, cfg.owner());
+ }
+ return DefaultAnnotations.union(an, newBuilder.build());
+ }
+}