Move IntentCompilers to the dedicated package
Change-Id: I9ec09e5e5fce45acfc6417dd640f57fd659f7f1f
diff --git a/core/net/src/main/java/org/onosproject/net/intent/impl/installer/PathIntentInstaller.java b/core/net/src/main/java/org/onosproject/net/intent/impl/installer/PathIntentInstaller.java
new file mode 100644
index 0000000..5230736
--- /dev/null
+++ b/core/net/src/main/java/org/onosproject/net/intent/impl/installer/PathIntentInstaller.java
@@ -0,0 +1,180 @@
+/*
+ * 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.impl.installer;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Lists;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.core.DefaultGroupId;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.Link;
+import org.onosproject.net.flow.DefaultFlowRule;
+import org.onosproject.net.flow.DefaultTrafficSelector;
+import org.onosproject.net.flow.FlowRule;
+import org.onosproject.net.flow.FlowRuleOperation;
+import org.onosproject.net.flow.TrafficSelector;
+import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.intent.Constraint;
+import org.onosproject.net.intent.IntentExtensionService;
+import org.onosproject.net.intent.IntentInstaller;
+import org.onosproject.net.intent.PathIntent;
+import org.onosproject.net.resource.DefaultLinkResourceRequest;
+import org.onosproject.net.resource.LinkResourceAllocations;
+import org.onosproject.net.resource.LinkResourceRequest;
+import org.onosproject.net.resource.LinkResourceService;
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+
+import static org.onosproject.net.flow.DefaultTrafficTreatment.builder;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Installer for {@link PathIntent packet path connectivity intents}.
+ */
+@Component(immediate = true)
+public class PathIntentInstaller implements IntentInstaller<PathIntent> {
+
+ private final Logger log = getLogger(getClass());
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected IntentExtensionService intentManager;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected CoreService coreService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected LinkResourceService resourceService;
+
+ protected ApplicationId appId;
+
+ @Activate
+ public void activate() {
+ appId = coreService.registerApplication("org.onosproject.net.intent");
+ intentManager.registerInstaller(PathIntent.class, this);
+ }
+
+ @Deactivate
+ public void deactivate() {
+ intentManager.unregisterInstaller(PathIntent.class);
+ }
+
+ @Override
+ public List<Collection<FlowRuleOperation>> install(PathIntent intent) {
+ LinkResourceAllocations allocations = allocateResources(intent);
+
+ TrafficSelector.Builder builder =
+ DefaultTrafficSelector.builder(intent.selector());
+ Iterator<Link> links = intent.path().links().iterator();
+ ConnectPoint prev = links.next().dst();
+ List<FlowRuleOperation> rules = Lists.newLinkedList();
+ // TODO Generate multiple batches
+ while (links.hasNext()) {
+ builder.matchInPort(prev.port());
+ Link link = links.next();
+ // if this is the last flow rule, apply the intent's treatments
+ TrafficTreatment treatment =
+ (links.hasNext() ? builder() : builder(intent.treatment()))
+ .setOutput(link.src().port()).build();
+
+ FlowRule rule = new DefaultFlowRule(link.src().deviceId(),
+ builder.build(), treatment, 123, //FIXME 123
+ appId,
+ new DefaultGroupId((short) (intent.id().fingerprint() & 0xffff)),
+ 0, true);
+ rules.add(new FlowRuleOperation(rule, FlowRuleOperation.Type.ADD));
+ prev = link.dst();
+ }
+
+ return Lists.newArrayList(ImmutableSet.of(rules));
+ }
+
+ @Override
+ public List<Collection<FlowRuleOperation>> uninstall(PathIntent intent) {
+ deallocateResources(intent);
+ TrafficSelector.Builder builder =
+ DefaultTrafficSelector.builder(intent.selector());
+ Iterator<Link> links = intent.path().links().iterator();
+ ConnectPoint prev = links.next().dst();
+ List<FlowRuleOperation> rules = Lists.newLinkedList();
+ // TODO Generate multiple batches
+ while (links.hasNext()) {
+ builder.matchInPort(prev.port());
+ Link link = links.next();
+ // if this is the last flow rule, apply the intent's treatments
+ TrafficTreatment treatment =
+ (links.hasNext() ? builder() : builder(intent.treatment()))
+ .setOutput(link.src().port()).build();
+ FlowRule rule = new DefaultFlowRule(link.src().deviceId(),
+ builder.build(), treatment, 123, appId,
+ new DefaultGroupId((short) (intent.id().fingerprint() & 0xffff)),
+ 0, true);
+ rules.add(new FlowRuleOperation(rule, FlowRuleOperation.Type.REMOVE));
+ prev = link.dst();
+ }
+ // FIXME this should change to new api
+ return Lists.newArrayList(ImmutableSet.of(rules));
+ }
+
+ @Override
+ public List<Collection<FlowRuleOperation>> replace(PathIntent oldIntent, PathIntent newIntent) {
+ // FIXME: implement this
+ List<Collection<FlowRuleOperation>> batches = Lists.newArrayList();
+ batches.addAll(uninstall(oldIntent));
+ batches.addAll(install(newIntent));
+ return batches;
+ }
+
+ /**
+ * Allocate resources required for an intent.
+ *
+ * @param intent intent to allocate resource for
+ * @return allocated resources if any are required, null otherwise
+ */
+ private LinkResourceAllocations allocateResources(PathIntent intent) {
+ LinkResourceRequest.Builder builder =
+ DefaultLinkResourceRequest.builder(intent.id(), intent.path().links());
+ for (Constraint constraint : intent.constraints()) {
+ builder.addConstraint(constraint);
+ }
+ LinkResourceRequest request = builder.build();
+ return request.resources().isEmpty() ? null : resourceService.requestResources(request);
+ }
+
+ /**
+ * Deallocate resources held by an intent.
+ *
+ * @param intent intent to deallocate resources for
+ */
+ private void deallocateResources(PathIntent intent) {
+ if (intent.constraints().isEmpty()) {
+ return;
+ }
+
+ LinkResourceAllocations allocatedResources = resourceService.getAllocations(intent.id());
+ if (allocatedResources != null) {
+ resourceService.releaseResources(allocatedResources);
+ }
+ }
+}