Use pre-sized ImmutableLists for yang-data-api

[controller.git] / opendaylight / md-sal / sal-clustering-commons / src / main / java / org / opendaylight / controller / cluster / datastore / node / utils / stream / NormalizedNodeInputOutput.java

diff --git a/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/datastore/node/utils/stream/NormalizedNodeInputOutput.java b/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/datastore/node/utils/stream/NormalizedNodeInputOutput.java
index cb84ef881095725fa8a7ec0d9e3f7f79380c21a4..486891dfd5e7328a7feb767852702fef43f5b627 100644 (file)
--- a/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/datastore/node/utils/stream/NormalizedNodeInputOutput.java
+++ b/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/datastore/node/utils/stream/NormalizedNodeInputOutput.java
@@ -7,21 +7,59 @@
  */
 package org.opendaylight.controller.cluster.datastore.node.utils.stream;
 
+import com.google.common.annotations.Beta;
 import java.io.DataInput;
 import java.io.DataOutput;
 import java.io.IOException;
 import javax.annotation.Nonnull;
 
+@Beta
 public final class NormalizedNodeInputOutput {
     private NormalizedNodeInputOutput() {
         throw new UnsupportedOperationException();
     }
 
+    /**
+     * Creates a new {@link NormalizedNodeDataInput} instance that reads from the given input. This method first reads
+     * and validates that the input contains a valid NormalizedNode stream.
+     *
+     * @param input the DataInput to read from
+     * @return a new {@link NormalizedNodeDataInput} instance
+     * @throws IOException if an error occurs reading from the input
+     */
     public static NormalizedNodeDataInput newDataInput(@Nonnull final DataInput input) throws IOException {
-        return new NormalizedNodeInputStreamReader(input);
+        final byte marker = input.readByte();
+        if (marker != TokenTypes.SIGNATURE_MARKER) {
+            throw new InvalidNormalizedNodeStreamException(String.format("Invalid signature marker: %d", marker));
+        }
+
+        final short version = input.readShort();
+        switch (version) {
+            case TokenTypes.LITHIUM_VERSION:
+                return new NormalizedNodeInputStreamReader(input, true);
+            default:
+                throw new InvalidNormalizedNodeStreamException(String.format("Unhandled stream version %s", version));
+        }
+    }
+
+    /**
+     * Creates a new {@link NormalizedNodeDataInput} instance that reads from the given input. This method does not
+     * perform any initial validation of the input stream.
+     *
+     * @param input the DataInput to read from
+     * @return a new {@link NormalizedNodeDataInput} instance
+     */
+    public static NormalizedNodeDataInput newDataInputWithoutValidation(@Nonnull final DataInput input) {
+        return new NormalizedNodeInputStreamReader(input, false);
     }
 
-    public static NormalizedNodeDataOutput newDataOutput(@Nonnull final DataOutput output) throws IOException {
+    /**
+     * Creates a new {@link NormalizedNodeDataOutput} instance that writes to the given output.
+     *
+     * @param output the DataOutput to write to
+     * @return a new {@link NormalizedNodeDataOutput} instance
+     */
+    public static NormalizedNodeDataOutput newDataOutput(@Nonnull final DataOutput output) {
         return new NormalizedNodeOutputStreamWriter(output);
     }
 }