Adding Intent Impl and shell command to install simple intent
diff --git a/core/net/src/main/java/org/onlab/onos/net/intent/impl/PathIntentInstaller.java b/core/net/src/main/java/org/onlab/onos/net/intent/impl/PathIntentInstaller.java
new file mode 100644
index 0000000..9202684
--- /dev/null
+++ b/core/net/src/main/java/org/onlab/onos/net/intent/impl/PathIntentInstaller.java
@@ -0,0 +1,79 @@
+package org.onlab.onos.net.intent.impl;
+
+import java.util.Iterator;
+
+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.onlab.onos.ApplicationId;
+import org.onlab.onos.net.ConnectPoint;
+import org.onlab.onos.net.Link;
+import org.onlab.onos.net.flow.DefaultFlowRule;
+import org.onlab.onos.net.flow.DefaultTrafficSelector;
+import org.onlab.onos.net.flow.DefaultTrafficTreatment;
+import org.onlab.onos.net.flow.FlowRule;
+import org.onlab.onos.net.flow.FlowRuleService;
+import org.onlab.onos.net.flow.TrafficSelector;
+import org.onlab.onos.net.flow.TrafficTreatment;
+import org.onlab.onos.net.flow.criteria.Criterion;
+import org.onlab.onos.net.intent.IntentExtensionService;
+import org.onlab.onos.net.intent.IntentInstaller;
+import org.onlab.onos.net.intent.PathIntent;
+
+/**
+ * An intent installer for {@link PathIntent}.
+ */
+@Component(immediate = true)
+public class PathIntentInstaller
+ implements IntentInstaller<PathIntent> {
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected IntentExtensionService intentManager;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ private FlowRuleService flowRuleService;
+
+ private final ApplicationId appId = ApplicationId.valueOf(1);
+
+ @Activate
+ public void activate() {
+ intentManager.registerInstaller(PathIntent.class, this);
+ }
+
+ @Deactivate
+ public void deactivate() {
+ intentManager.unregisterInstaller(PathIntent.class);
+ }
+
+ @Override
+ public void install(PathIntent intent) {
+ TrafficSelector.Builder builder = new DefaultTrafficSelector.Builder();
+ TrafficSelector selector = intent.getTrafficSelector();
+ for (Criterion c : selector.criteria()) {
+ builder.add(c);
+ }
+
+ Iterator<Link> links = intent.getPath().links().iterator();
+ ConnectPoint prev = links.next().dst();
+ while (links.hasNext()) {
+ builder.matchInport(prev.port());
+ Link link = links.next();
+
+ TrafficTreatment.Builder treat = new DefaultTrafficTreatment.Builder();
+ treat.setOutput(link.src().port());
+
+ FlowRule f = new DefaultFlowRule(link.src().deviceId(),
+ builder.build(), treat.build(), 0, appId);
+ flowRuleService.applyFlowRules(f);
+
+ prev = link.dst();
+ }
+
+ }
+
+ @Override
+ public void uninstall(PathIntent intent) {
+ //TODO
+ }
+}