private static InputStream maybeWrapStatsInputStream(
InputStream inputStream,
CompressingFilterContext context,
CompressingFilterStats.StatsField field) {
assert inputStream != null;
InputStream result;
if (context.isStatsEnabled()) {
CompressingFilterStats stats = context.getStats();
CompressingFilterStats.InputStatsCallback callbackInput = stats.getInputStatsCallback(field);
result = new StatsInputStream(inputStream, callbackInput);
} else {
result = inputStream;
}
return result;
}
