Add codec for Long (needed by TargetCompleteEvent).

PiperOrigin-RevId: 199965139

src/main/java/com/google/devtools/build/lib/skyframe/serialization/LongCodec.java

@@ -0,0 +1,40 @@
+// Copyright 2018 The Bazel Authors. All rights reserved.
+//
+// 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 com.google.devtools.build.lib.skyframe.serialization;
+
+import com.google.protobuf.CodedInputStream;
+import com.google.protobuf.CodedOutputStream;
+import java.io.IOException;
+
+/** Codec for {@link Long}. */
+class LongCodec implements ObjectCodec<Long> {
+
+  @Override
+  public Class<Long> getEncodedClass() {
+    return Long.class;
+  }
+
+  @Override
+  public void serialize(SerializationContext context, Long value, CodedOutputStream codedOut)
+      throws IOException {
+    codedOut.writeInt64NoTag(value);
+  }
+
+  @Override
+  public Long deserialize(DeserializationContext context, CodedInputStream codedIn)
+      throws IOException {
+    return codedIn.readInt64();
+  }
+}