Add Payload.serializedSize()

[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / persisted / AbstractIdentifiablePayload.java

diff --git a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/AbstractIdentifiablePayload.java b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/AbstractIdentifiablePayload.java
index d081a13421e02ba8157d7f340b53fe87534a3d3a..f07d4dbe903d10244f9a0ec4e764b82864e5fb7e 100644 (file)
--- a/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/AbstractIdentifiablePayload.java
+++ b/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/persisted/AbstractIdentifiablePayload.java
@@ -18,6 +18,8 @@ import java.io.IOException;
 import java.io.ObjectInput;
 import java.io.ObjectOutput;
 import java.io.Serializable;
+import java.util.function.Function;
+import org.apache.commons.lang3.SerializationUtils;
 import org.eclipse.jdt.annotation.NonNull;
 import org.opendaylight.controller.cluster.raft.messages.IdentifiablePayload;
 import org.opendaylight.yangtools.concepts.Identifiable;
@@ -88,6 +90,15 @@ public abstract class AbstractIdentifiablePayload<T extends Identifier> extends
         return serialized.length;
     }
 
+    @Override
+    public final int serializedSize() {
+        // TODO: this is not entirely accurate, as the serialization stream has additional overheads:
+        //       - 3 bytes for each block of data <256 bytes
+        //       - 5 bytes for each block of data >=256 bytes
+        //       - each block of data is limited to 1024 bytes as per serialization spec
+        return size() + externalizableProxySize();
+    }
+
     @Override
     public final String toString() {
         return MoreObjects.toStringHelper(this).add("identifier", identifier).add("size", size()).toString();
@@ -100,4 +111,10 @@ public abstract class AbstractIdentifiablePayload<T extends Identifier> extends
 
     @SuppressWarnings("checkstyle:hiddenField")
     protected abstract @NonNull AbstractProxy<T> externalizableProxy(byte @NonNull[] serialized);
+
+    protected abstract int externalizableProxySize();
+
+    protected static final int externalizableProxySize(final Function<byte[], ? extends AbstractProxy<?>> constructor) {
+        return SerializationUtils.serialize(constructor.apply(new byte[0])).length;
+    }
 }