steveniemitz commented on code in PR #17802:
URL: https://github.com/apache/beam/pull/17802#discussion_r903837674
##########
sdks/java/core/src/main/java/org/apache/beam/sdk/util/CoderUtils.java:
##########
@@ -107,6 +107,25 @@ public static <T> T decodeFromByteArray(
}
}
+ /** Decodes a value from the given stream, validating that no bytes are
remaining once decoded. */
+ public static <T> T decodeFromStream(Coder<T> coder, InputStream stream)
throws IOException {
+ return decodeFromStream(coder, stream, Coder.Context.OUTER);
+ }
+
+ /**
+ * Decodes a value from the given stream using a given context, validating
that no bytes are
+ * remaining once decoded.
+ */
+ public static <T> T decodeFromStream(Coder<T> coder, InputStream stream,
Coder.Context context)
+ throws IOException {
+ T result = coder.decode(stream, context);
+ if (stream.available() != 0) {
+ throw new CoderException(
+ stream.available() + " unexpected extra bytes after decoding " +
result);
+ }
+ return result;
+ }
Review Comment:
maybe we make a `ByteStringCoderUtils` or something in the dataflow runner
package and put this there?
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