ONOS checkin based on commit tag e796610b1f721d02f9b0e213cf6f7790c10ecd60

Change-Id: Ife8810491034fe7becdba75dda20de4267bd15cd

1 files changed, 96 insertions, 0 deletions

diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/net/intent/constraint/BandwidthConstraint.java b/framework/src/onos/core/api/src/main/java/org/onosproject/net/intent/constraint/BandwidthConstraint.java
new file mode 100644
index 00000000..43b8e4b1
--- /dev/null
+++ b/framework/src/onos/core/api/src/main/java/org/onosproject/net/intent/constraint/BandwidthConstraint.java
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2014 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.intent.constraint;
+
+import com.google.common.annotations.Beta;
+import org.onosproject.net.Link;
+import org.onosproject.net.resource.link.BandwidthResource;
+import org.onosproject.net.resource.link.BandwidthResourceRequest;
+import org.onosproject.net.resource.link.LinkResourceService;
+import org.onosproject.net.resource.ResourceRequest;
+import org.onosproject.net.resource.ResourceType;
+
+import java.util.Objects;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Constraint that evaluates links based on available bandwidths.
+ */
+@Beta
+public class BandwidthConstraint extends BooleanConstraint {
+
+    private final BandwidthResource bandwidth;
+
+    /**
+     * Creates a new bandwidth constraint.
+     *
+     * @param bandwidth required bandwidth
+     */
+    public BandwidthConstraint(BandwidthResource bandwidth) {
+        this.bandwidth = checkNotNull(bandwidth, "Bandwidth cannot be null");
+    }
+
+    // Constructor for serialization
+    private BandwidthConstraint() {
+        this.bandwidth = null;
+    }
+
+    @Override
+    public boolean isValid(Link link, LinkResourceService resourceService) {
+        for (ResourceRequest request : resourceService.getAvailableResources(link)) {
+            if (request.type() == ResourceType.BANDWIDTH) {
+                BandwidthResourceRequest brr = (BandwidthResourceRequest) request;
+                if (brr.bandwidth().toDouble() >= bandwidth.toDouble()) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Returns the bandwidth required by this constraint.
+     *
+     * @return required bandwidth
+     */
+    public BandwidthResource bandwidth() {
+        return bandwidth;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(bandwidth);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null || getClass() != obj.getClass()) {
+            return false;
+        }
+        final BandwidthConstraint other = (BandwidthConstraint) obj;
+        return Objects.equals(this.bandwidth, other.bandwidth);
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this).add("bandwidth", bandwidth).toString();
+    }
+}