Add an executor for flow batch operation.
- Added FlowBatchOperationExecutor to execute flow batch operations.
- Modified FlowManagerModule to use FlowBatchOperationExecutor and removed unused codes.
- This task is a part of ONOS-1690 and ONOS-1692.
Change-Id: I84737ab43944785dd815effa8e455c5a3df55850
diff --git a/src/main/java/net/onrc/onos/core/flowmanager/FlowBatchOperationExecutor.java b/src/main/java/net/onrc/onos/core/flowmanager/FlowBatchOperationExecutor.java
new file mode 100644
index 0000000..d764014
--- /dev/null
+++ b/src/main/java/net/onrc/onos/core/flowmanager/FlowBatchOperationExecutor.java
@@ -0,0 +1,144 @@
+package net.onrc.onos.core.flowmanager;
+
+import static com.google.common.base.Verify.verify;
+import static com.google.common.base.Verify.verifyNotNull;
+
+import java.util.Arrays;
+import java.util.List;
+
+import net.onrc.onos.api.batchoperation.BatchOperationEntry;
+import net.onrc.onos.api.flowmanager.Flow;
+import net.onrc.onos.api.flowmanager.FlowBatchId;
+import net.onrc.onos.api.flowmanager.FlowBatchOperation;
+import net.onrc.onos.api.flowmanager.FlowBatchOperation.Operator;
+import net.onrc.onos.api.flowmanager.FlowBatchState;
+import net.onrc.onos.core.matchaction.MatchActionId;
+import net.onrc.onos.core.matchaction.MatchActionOperationEntry;
+import net.onrc.onos.core.matchaction.MatchActionOperations;
+import net.onrc.onos.core.matchaction.MatchActionOperationsId;
+import net.onrc.onos.core.matchaction.MatchActionService;
+import net.onrc.onos.core.util.IdGenerator;
+
+/**
+ * Executes {@link FlowBatchOperation}.
+ * <p>
+ * This class compiles pairs of {@link Flow} and ADD/REMOVE operation to a list
+ * of a set of match-action operations.
+ */
+class FlowBatchOperationExecutor implements FlowBatchMapEventListener {
+ private final FlowBatchMap flowBatchMap;
+ // TODO: ADD later: private final FlowMap flowMap;
+ private final MatchActionService matchActionService;
+ private IdGenerator<MatchActionId> maIdGenerator;
+ private IdGenerator<MatchActionOperationsId> maoIdGenerator;
+
+ /**
+ * Creates {@link FlowBatchOperationExecutor} instance.
+ */
+ public FlowBatchOperationExecutor(MatchActionService matchActionService,
+ FlowMap flowMap, FlowBatchMap flowBatchMap) {
+ this.flowBatchMap = flowBatchMap;
+ // TODO: Add later: this.flowMap = flowMap;
+ this.matchActionService = matchActionService;
+ this.maIdGenerator = matchActionService.getMatchActionIdGenerator();
+ this.maoIdGenerator = matchActionService.getMatchActionOperationsIdGenerator();
+ }
+
+ /**
+ * Generates the series of MatchActionOperations from the
+ * {@link FlowBatchOperation}.
+ * <p>
+ * FIXME: Currently supporting ADD operations only.
+ * <p>
+ * FIXME: Currently supporting PacketPathFlow and SingleDstTreeFlow only.
+ * <p>
+ * FIXME: MatchActionOperations should have dependency field to the other
+ * match action operations, and this method should use this.
+ *
+ * @param op the {@link FlowBatchOperation} object
+ * @return the list of {@link MatchActionOperations} objects
+ */
+ private List<MatchActionOperations>
+ generateMatchActionOperationsList(FlowBatchOperation op) {
+
+ // MatchAction operations at head (ingress) switches.
+ MatchActionOperations headOps =
+ new MatchActionOperations(maoIdGenerator.getNewId());
+
+ // MatchAction operations at rest of the switches.
+ MatchActionOperations tailOps =
+ new MatchActionOperations(maoIdGenerator.getNewId());
+
+ for (BatchOperationEntry<Operator, ?> e : op.getOperations()) {
+
+ // Check if it includes unsupported operations
+ if (e.getOperator() != FlowBatchOperation.Operator.ADD) {
+ throw new UnsupportedOperationException(
+ "FlowManager supports ADD operations only.");
+ }
+ if (!(e.getTarget() instanceof Flow)) {
+ throw new IllegalStateException(
+ "The target is not Flow object: " + e.getTarget());
+ }
+
+ // Compile flows to match-actions
+ Flow flow = (Flow) e.getTarget();
+ List<MatchActionOperations> maOps = flow.compile(
+ e.getOperator(), maIdGenerator, maoIdGenerator);
+ verifyNotNull(maOps, "Could not compile the flow: " + flow);
+ verify(maOps.size() == 2,
+ "The flow generates unspported match-action operations.");
+
+ // Merge match-action operations
+ for (MatchActionOperationEntry mae : maOps.get(0).getOperations()) {
+ verify(mae.getOperator() == MatchActionOperations.Operator.ADD);
+ tailOps.addOperation(mae);
+ }
+ for (MatchActionOperationEntry mae : maOps.get(1).getOperations()) {
+ verify(mae.getOperator() == MatchActionOperations.Operator.ADD);
+ headOps.addOperation(mae);
+ }
+ }
+
+ return Arrays.asList(tailOps, headOps);
+ }
+
+ @Override
+ public void flowBatchOperationAdded(FlowBatchId id, FlowBatchOperation flowOp) {
+
+ if (flowBatchMap.isLocal(id)) {
+ // TODO: update flowMap based on flowOp.
+
+ List<MatchActionOperations> maOps = generateMatchActionOperationsList(flowOp);
+ for (MatchActionOperations maOp : maOps) {
+ matchActionService.executeOperations(maOp);
+ }
+ }
+ }
+
+ @Override
+ public void flowBatchOperationRemoved(FlowBatchId id) {
+ // not used.
+ }
+
+ @Override
+ public void flowBatchOperationStateChanged(FlowBatchId id, FlowBatchState oldState,
+ FlowBatchState currentState) {
+ // TODO: update flow states in flowMap.
+ // TODO: update flow batch operation states in flowBatchMap.
+ }
+
+ /**
+ * Starts executor.
+ */
+ public void start() {
+ flowBatchMap.addListener(this);
+ }
+
+ /**
+ * Stops executor.
+ */
+ public void stop() {
+ flowBatchMap.removeListener(this);
+ }
+}