1 files changed, 91 insertions, 0 deletions
diff --git a/framework/src/onos/core/net/src/main/java/org/onosproject/net/intent/impl/compiler/MplsIntentCompiler.java b/framework/src/onos/core/net/src/main/java/org/onosproject/net/intent/impl/compiler/MplsIntentCompiler.java
new file mode 100644
index 00000000..609f9a34
--- /dev/null
+++ b/framework/src/onos/core/net/src/main/java/org/onosproject/net/intent/impl/compiler/MplsIntentCompiler.java
@@ -0,0 +1,91 @@
+package org.onosproject.net.intent.impl.compiler;
+
+import static java.util.Arrays.asList;
+import static org.onosproject.net.DefaultEdgeLink.createEdgeLink;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+
+
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.DefaultPath;
+import org.onosproject.net.Link;
+import org.onosproject.net.Path;
+import org.onosproject.net.intent.Intent;
+import org.onosproject.net.intent.MplsIntent;
+import org.onosproject.net.intent.MplsPathIntent;
+import org.onosproject.net.provider.ProviderId;
+import org.onosproject.net.resource.link.LinkResourceAllocations;
+
+
+@Component(immediate = true)
+public class MplsIntentCompiler  extends ConnectivityIntentCompiler<MplsIntent> {
+
+    // TODO: use off-the-shell core provider ID
+    private static final ProviderId PID =
+            new ProviderId("core", "org.onosproject.core", true);
+    // TODO: consider whether the default cost is appropriate or not
+    public static final int DEFAULT_COST = 1;
+
+
+    @Activate
+    public void activate() {
+        intentManager.registerCompiler(MplsIntent.class, this);
+    }
+
+    @Deactivate
+    public void deactivate() {
+        intentManager.unregisterCompiler(MplsIntent.class);
+    }
+
+    @Override
+    public List<Intent> compile(MplsIntent intent, List<Intent> installable,
+                                Set<LinkResourceAllocations> resources) {
+        ConnectPoint ingressPoint = intent.ingressPoint();
+        ConnectPoint egressPoint = intent.egressPoint();
+
+        if (ingressPoint.deviceId().equals(egressPoint.deviceId())) {
+            List<Link> links = asList(createEdgeLink(ingressPoint, true), createEdgeLink(egressPoint, false));
+            return asList(createPathIntent(new DefaultPath(PID, links, DEFAULT_COST), intent));
+        }
+
+        List<Link> links = new ArrayList<>();
+        Path path = getPath(intent, ingressPoint.deviceId(),
+                egressPoint.deviceId());
+
+        links.add(createEdgeLink(ingressPoint, true));
+        links.addAll(path.links());
+
+        links.add(createEdgeLink(egressPoint, false));
+
+        return asList(createPathIntent(new DefaultPath(PID, links, path.cost(),
+                                                       path.annotations()), intent));
+    }
+
+    /**
+     * Creates a path intent from the specified path and original
+     * connectivity intent.
+     *
+     * @param path   path to create an intent for
+     * @param intent original intent
+     */
+    private Intent createPathIntent(Path path,
+                                    MplsIntent intent) {
+        return MplsPathIntent.builder()
+                .appId(intent.appId())
+                .selector(intent.selector())
+                .treatment(intent.treatment())
+                .path(path)
+                .ingressLabel(intent.ingressLabel())
+                .egressLabel(intent.egressLabel())
+                .constraints(intent.constraints())
+                .priority(intent.priority())
+                .build();
+    }
+
+
+}