MiguelAnzoWizeline commented on a change in pull request #15549:
URL: https://github.com/apache/beam/pull/15549#discussion_r719653560
##########
File path:
sdks/java/io/redis/src/main/java/org/apache/beam/sdk/io/redis/RedisIO.java
##########
@@ -334,94 +336,88 @@ public void setup() {
public void teardown() {
jedis.close();
}
- }
-
- private static class ReadKeysWithPattern extends BaseReadFn<String> {
- ReadKeysWithPattern(RedisConnectionConfiguration connectionConfiguration) {
- super(connectionConfiguration);
+ @GetInitialRestriction
+ public OffsetRange getInitialRestriction(@Element String pattern) {
+ return new OffsetRange(0, getKeyPatters(pattern).size());
}
@ProcessElement
- public void processElement(ProcessContext c) {
- ScanParams scanParams = new ScanParams();
- scanParams.match(c.element());
-
- String cursor = ScanParams.SCAN_POINTER_START;
- boolean finished = false;
- while (!finished) {
- ScanResult<String> scanResult = jedis.scan(cursor, scanParams);
- List<String> keys = scanResult.getResult();
- for (String k : keys) {
- c.output(k);
+ public void processElement(ProcessContext c,
RestrictionTracker<OffsetRange, Long> tracker) {
+ String pattern = c.element();
+ List<String> keys = getKeyPatters(pattern);
+ List<String> bundle = new ArrayList<>();
+ for (long i = tracker.currentRestriction().getFrom();
+ i < tracker.currentRestriction().getTo();
+ i++) {
+ if (tracker.tryClaim(i)) {
+ bundle.add(keys.get((int) i));
}
- cursor = scanResult.getCursor();
- if (cursor.equals(ScanParams.SCAN_POINTER_START)) {
- finished = true;
+ }
+ if (bundle.size() > 0) {
+ List<KV<String, String>> kvs = fetchAndFlush(bundle);
Review comment:
Updated
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