athrog commented on a change in pull request #271:
URL: https://github.com/apache/solr/pull/271#discussion_r695971805
##########
File path:
solr/contrib/s3-repository/src/java/org/apache/solr/s3/S3StorageClient.java
##########
@@ -194,55 +204,48 @@ void deleteDirectory(String path) throws S3Exception {
String[] listDir(String path) throws S3Exception {
path = sanitizedDirPath(path);
- String prefix = path;
- ListObjectsRequest listRequest =
- new ListObjectsRequest()
- .withBucketName(bucketName)
- .withPrefix(prefix)
- .withDelimiter(S3_FILE_PATH_DELIMITER);
+ final String prefix = path;
List<String> entries = new ArrayList<>();
try {
- ObjectListing objectListing = s3Client.listObjects(listRequest);
-
- while (true) {
- List<String> files =
- objectListing.getObjectSummaries().stream()
- .map(S3ObjectSummary::getKey)
- .collect(Collectors.toList());
- files.addAll(objectListing.getCommonPrefixes());
- // This filtering is needed only for S3mock. Real S3 does not ignore
the trailing '/' in the
- // prefix.
- files =
- files.stream()
- .filter(s -> s.startsWith(prefix))
- .map(s -> s.substring(prefix.length()))
- .filter(s -> !s.isEmpty())
- .filter(
- s -> {
- int slashIndex = s.indexOf(S3_FILE_PATH_DELIMITER);
- return slashIndex == -1 || slashIndex == s.length() - 1;
- })
- .map(
- s -> {
- if (s.endsWith(S3_FILE_PATH_DELIMITER)) {
- return s.substring(0, s.length() - 1);
- }
- return s;
- })
- .collect(Collectors.toList());
-
- entries.addAll(files);
-
- if (objectListing.isTruncated()) {
- objectListing = s3Client.listNextBatchOfObjects(objectListing);
- } else {
- break;
- }
- }
+ ListObjectsV2Iterable objectListing =
+ s3Client.listObjectsV2Paginator(
+ builder ->
+ builder
+ .bucket(bucketName)
+ .prefix(prefix)
+ .delimiter(S3_FILE_PATH_DELIMITER)
+ .build());
+
+ List<String> files =
+
objectListing.contents().stream().map(S3Object::key).collect(Collectors.toList());
+
objectListing.commonPrefixes().stream().map(CommonPrefix::prefix).forEach(files::add);
+ // This filtering is needed only for S3mock. Real S3 does not ignore the
trailing '/' in the
+ // prefix.
+ files =
Review comment:
Now that the `while` loop is gone and we can get everything in one API
call, this streaming/filtering between `files`, `objectListing`, and `entries`
(and even the returned `String[]`) could be simplified.
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