Implement Atomix AsyncAtomicCounterMap, AtomicCounterMap and state machine.

Change-Id: Ifd7f60ae8dcfe7239e034a92654b4ef30ffe46ae
diff --git a/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/TranscodingAsyncAtomicCounterMap.java b/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/TranscodingAsyncAtomicCounterMap.java
new file mode 100644
index 0000000..69a3a08
--- /dev/null
+++ b/core/store/primitives/src/main/java/org/onosproject/store/primitives/impl/TranscodingAsyncAtomicCounterMap.java
@@ -0,0 +1,178 @@
+/*
+ * Copyright 2017-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.impl;
+
+import org.onlab.util.Tools;
+import org.onosproject.store.service.AsyncAtomicCounterMap;
+
+import java.util.concurrent.CompletableFuture;
+import java.util.function.Function;
+
+/**
+ * An {@code AsyncAtomicCounterMap} that transcodes keys.
+ */
+public class TranscodingAsyncAtomicCounterMap<K1, K2> implements AsyncAtomicCounterMap<K1> {
+    private final AsyncAtomicCounterMap<K2> backingMap;
+    private final Function<K1, K2> keyEncoder;
+    private final Function<K2, K1> keyDecoder;
+
+    public TranscodingAsyncAtomicCounterMap(AsyncAtomicCounterMap<K2> backingMap,
+            Function<K1, K2> keyEncoder, Function<K2, K1> keyDecoder) {
+        this.backingMap = backingMap;
+        this.keyEncoder = k -> k == null ? null : keyEncoder.apply(k);
+        this.keyDecoder = k -> k == null ? null : keyDecoder.apply(k);
+    }
+
+    @Override
+    public String name() {
+        return backingMap.name();
+    }
+
+    @Override
+    public CompletableFuture<Long> incrementAndGet(K1 key) {
+        try {
+            return backingMap.incrementAndGet(keyEncoder.apply(key));
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Long> decrementAndGet(K1 key) {
+        try {
+            return backingMap.decrementAndGet(keyEncoder.apply(key));
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Long> getAndIncrement(K1 key) {
+        try {
+            return backingMap.getAndIncrement(keyEncoder.apply(key));
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Long> getAndDecrement(K1 key) {
+        try {
+            return backingMap.getAndDecrement(keyEncoder.apply(key));
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Long> addAndGet(K1 key, long delta) {
+        try {
+            return backingMap.addAndGet(keyEncoder.apply(key), delta);
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Long> getAndAdd(K1 key, long delta) {
+        try {
+            return backingMap.getAndAdd(keyEncoder.apply(key), delta);
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Long> get(K1 key) {
+        try {
+            return backingMap.get(keyEncoder.apply(key));
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Long> put(K1 key, long newValue) {
+        try {
+            return backingMap.put(keyEncoder.apply(key), newValue);
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Long> putIfAbsent(K1 key, long newValue) {
+        try {
+            return backingMap.putIfAbsent(keyEncoder.apply(key), newValue);
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Boolean> replace(K1 key, long expectedOldValue, long newValue) {
+        try {
+            return backingMap.replace(keyEncoder.apply(key), expectedOldValue, newValue);
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Long> remove(K1 key) {
+        try {
+            return backingMap.remove(keyEncoder.apply(key));
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Boolean> remove(K1 key, long value) {
+        try {
+            return backingMap.remove(keyEncoder.apply(key), value);
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Integer> size() {
+        try {
+            return backingMap.size();
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Boolean> isEmpty() {
+        try {
+            return backingMap.isEmpty();
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+
+    @Override
+    public CompletableFuture<Void> clear() {
+        try {
+            return backingMap.clear();
+        } catch (Exception e) {
+            return Tools.exceptionalFuture(e);
+        }
+    }
+}