ruanhang1993 commented on code in PR #22249:
URL: https://github.com/apache/flink/pull/22249#discussion_r1223886235
##########
flink-connectors/flink-connector-files/src/main/java/org/apache/flink/connector/file/table/FileSystemTableSource.java:
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@@ -269,10 +271,35 @@ private SourceProvider
createSourceProvider(BulkFormat<RowData, FileSourceSplit>
tableOptions
.getOptional(FileSystemConnectorOptions.SOURCE_MONITOR_INTERVAL)
.ifPresent(fileSourceBuilder::monitorContinuously);
+ tableOptions
+ .getOptional(FileSystemConnectorOptions.SOURCE_REGEX_PATTERN)
+ .ifPresent(
+ s -> {
+ String regexPath =
connectBasePathAndRegex(path.getPath(), s);
+ fileSourceBuilder.setFileEnumerator(
+ bulkFormat.isSplittable()
+ ? () -> new
BlockSplittingRegexEnumerator(regexPath)
+ : () -> new
NonSplittingRegexEnumerator(regexPath));
+ });
return SourceProvider.of(fileSourceBuilder.build());
}
+ private String connectBasePathAndRegex(String basePath, String regex) {
+ StringBuilder result = new StringBuilder();
+ result.append(basePath);
+ if (!basePath.endsWith(Path.SEPARATOR)) {
+ result.append(Path.SEPARATOR);
+ }
+ int startIndex = 0;
+ while (startIndex < regex.length()
Review Comment:
@luoyuxia Using a base path will help to reduce the search time.
If we only provide `source.regex-pattern` , we have to search files from
root path `/` when `source.regex-pattern` = `'/dir/t/.*/inner/.*'`.
If we provide base dir and `source.regex-pattern`, we will start to search
files under the base dir `/dir/t/` when base dir = `'/dir/t'` and
`source.regex-pattern` = `'.*/inner/.*'`.
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