Internal change

PiperOrigin-RevId: 196881464

1 files changed, 57 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/packages/RuleCodec.java b/src/main/java/com/google/devtools/build/lib/packages/RuleCodec.java
new file mode 100644
index 0000000000..18597b534b
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/packages/RuleCodec.java
@@ -0,0 +1,57 @@
+// 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.packages;
+
+import com.google.common.annotations.VisibleForTesting;
+import com.google.devtools.build.lib.skyframe.serialization.DeserializationContext;
+import com.google.devtools.build.lib.skyframe.serialization.ObjectCodec;
+import com.google.devtools.build.lib.skyframe.serialization.SerializationContext;
+import com.google.devtools.build.lib.skyframe.serialization.SerializationException;
+import com.google.protobuf.CodedInputStream;
+import com.google.protobuf.CodedOutputStream;
+import java.io.IOException;
+
+/**
+ * Codec for {@link Rule} that throws. We expect never to serialize Rule except for in PackageCodec,
+ * which has custom logic.
+ */
+public class RuleCodec implements ObjectCodec<Rule> {
+
+  @VisibleForTesting
+  static final String SERIALIZATION_ERROR_TEMPLATE =
+      "Rule serialization is not permitted outside of PackageCodec, but attempted to serialize "
+          + "Rule %s.";
+
+  private static final String DESERIALIZATION_ERROR_TEMPLATE =
+      "Rule deserialization is not permitted outside of PackageCodec, but attempted to deserialize "
+          + "a rule";
+
+  @Override
+  public Class<? extends Rule> getEncodedClass() {
+    return Rule.class;
+  }
+
+  @Override
+  public void serialize(SerializationContext context, Rule obj, CodedOutputStream codedOut)
+      throws SerializationException, IOException {
+    throw new SerializationException(String.format(SERIALIZATION_ERROR_TEMPLATE, obj));
+  }
+
+  @Override
+  public Rule deserialize(DeserializationContext context, CodedInputStream codedIn)
+      throws SerializationException, IOException {
+    throw new SerializationException(DESERIALIZATION_ERROR_TEMPLATE);
+  }
+}