Distributed work queue primitive
Change-Id: Ia8e531e6611ec502399edec376ccc00522e47994
diff --git a/core/store/primitives/src/main/java/org/onosproject/store/primitives/resources/impl/AtomixWorkQueueCommands.java b/core/store/primitives/src/main/java/org/onosproject/store/primitives/resources/impl/AtomixWorkQueueCommands.java
new file mode 100644
index 0000000..3724529
--- /dev/null
+++ b/core/store/primitives/src/main/java/org/onosproject/store/primitives/resources/impl/AtomixWorkQueueCommands.java
@@ -0,0 +1,224 @@
+/*
+ * Copyright 2016-present 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.store.primitives.resources.impl;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+import org.onosproject.store.service.Task;
+import org.onosproject.store.service.WorkQueueStats;
+
+import com.google.common.base.MoreObjects;
+
+import io.atomix.catalyst.buffer.BufferInput;
+import io.atomix.catalyst.buffer.BufferOutput;
+import io.atomix.catalyst.serializer.CatalystSerializable;
+import io.atomix.catalyst.serializer.SerializableTypeResolver;
+import io.atomix.catalyst.serializer.Serializer;
+import io.atomix.catalyst.serializer.SerializerRegistry;
+import io.atomix.copycat.Command;
+
+/**
+ * {@link AtomixWorkQueue} resource state machine operations.
+ */
+public final class AtomixWorkQueueCommands {
+
+ private AtomixWorkQueueCommands() {
+ }
+
+ /**
+ * Command to add a collection of tasks to the queue.
+ */
+ @SuppressWarnings("serial")
+ public static class Add implements Command<Void>, CatalystSerializable {
+
+ private Collection<byte[]> items;
+
+ private Add() {
+ }
+
+ public Add(Collection<byte[]> items) {
+ this.items = items;
+ }
+
+ @Override
+ public void writeObject(BufferOutput<?> buffer, Serializer serializer) {
+ buffer.writeInt(items.size());
+ items.forEach(task -> serializer.writeObject(task, buffer));
+ }
+
+ @Override
+ public void readObject(BufferInput<?> buffer, Serializer serializer) {
+ items = IntStream.range(0, buffer.readInt())
+ .mapToObj(i -> serializer.<byte[]>readObject(buffer))
+ .collect(Collectors.toCollection(ArrayList::new));
+ }
+
+ public Collection<byte[]> items() {
+ return items;
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .add("items", items)
+ .toString();
+ }
+ }
+
+ /**
+ * Command to take a task from the queue.
+ */
+ @SuppressWarnings("serial")
+ public static class Take implements Command<Collection<Task<byte[]>>>, CatalystSerializable {
+
+ private int maxTasks;
+
+ private Take() {
+ }
+
+ public Take(int maxTasks) {
+ this.maxTasks = maxTasks;
+ }
+
+ @Override
+ public void writeObject(BufferOutput<?> buffer, Serializer serializer) {
+ buffer.writeInt(maxTasks);
+ }
+
+ @Override
+ public void readObject(BufferInput<?> buffer, Serializer serializer) {
+ maxTasks = buffer.readInt();
+ }
+
+ public int maxTasks() {
+ return maxTasks;
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .add("maxTasks", maxTasks)
+ .toString();
+ }
+ }
+
+ @SuppressWarnings("serial")
+ public static class Stats implements Command<WorkQueueStats>, CatalystSerializable {
+
+ @Override
+ public void writeObject(BufferOutput<?> buffer, Serializer serializer) {
+ }
+
+ @Override
+ public void readObject(BufferInput<?> buffer, Serializer serializer) {
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .toString();
+ }
+ }
+
+
+
+ @SuppressWarnings("serial")
+ public static class Register implements Command<Void>, CatalystSerializable {
+
+ @Override
+ public void writeObject(BufferOutput<?> buffer, Serializer serializer) {
+ }
+
+ @Override
+ public void readObject(BufferInput<?> buffer, Serializer serializer) {
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .toString();
+ }
+ }
+
+ @SuppressWarnings("serial")
+ public static class Unregister implements Command<Void>, CatalystSerializable {
+
+ @Override
+ public void writeObject(BufferOutput<?> buffer, Serializer serializer) {
+ }
+
+ @Override
+ public void readObject(BufferInput<?> buffer, Serializer serializer) {
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .toString();
+ }
+ }
+
+ @SuppressWarnings("serial")
+ public static class Complete implements Command<Void>, CatalystSerializable {
+ private Collection<String> taskIds;
+
+ private Complete() {
+ }
+
+ public Complete(Collection<String> taskIds) {
+ this.taskIds = taskIds;
+ }
+
+ @Override
+ public void writeObject(BufferOutput<?> buffer, Serializer serializer) {
+ serializer.writeObject(taskIds, buffer);
+ }
+
+ @Override
+ public void readObject(BufferInput<?> buffer, Serializer serializer) {
+ taskIds = serializer.readObject(buffer);
+ }
+
+ public Collection<String> taskIds() {
+ return taskIds;
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .add("taskIds", taskIds)
+ .toString();
+ }
+ }
+
+ /**
+ * Work queue command type resolver.
+ */
+ public static class TypeResolver implements SerializableTypeResolver {
+ @Override
+ public void resolve(SerializerRegistry registry) {
+ registry.register(Register.class, -960);
+ registry.register(Unregister.class, -961);
+ registry.register(Take.class, -962);
+ registry.register(Add.class, -963);
+ registry.register(Complete.class, -964);
+ registry.register(Stats.class, -965);
+ }
+ }
+}