dyp12 commented on code in PR #9735:
URL: https://github.com/apache/seatunnel/pull/9735#discussion_r2289824641
##########
seatunnel-connectors-v2/connector-cdc/connector-cdc-mysql/src/main/java/org/apache/seatunnel/connectors/seatunnel/cdc/mysql/utils/MySqlConnectionUtils.java:
##########
@@ -185,4 +192,87 @@ private static Map<String, String> querySystemVariables(
return variables;
}
+
+ public static BinlogOffset findBinlogOffsetBytimestamp(
+ JdbcConnection jdbc, BinaryLogClient client, long timestamp) {
+ final String showBinaryLogStmt = "SHOW BINARY LOGS";
+ List<String> binlogFiles = new ArrayList<>();
+ JdbcConnection.ResultSetConsumer rsc =
+ rs -> {
+ while (rs.next()) {
+ String fileName = rs.getString(1);
+ long fileSize = rs.getLong(2);
+ if (fileSize > 0) {
+ binlogFiles.add(fileName);
+ }
+ }
+ };
+ try {
+ jdbc.query(showBinaryLogStmt, rsc);
+ if (binlogFiles.isEmpty()) {
+ return BinlogOffset.INITIAL_OFFSET;
+ }
+ String binlogName = searchBinlogName(client, timestamp,
binlogFiles);
+ return new BinlogOffset(binlogName, 0);
+ } catch (Exception e) {
+ throw new SeaTunnelException(e);
+ }
+ }
+
+ private static String searchBinlogName(
+ BinaryLogClient client, long targetMs, List<String> binlogFiles)
+ throws IOException, InterruptedException {
+ int startIdx = 0;
+ int endIdx = binlogFiles.size() - 1;
+
+ while (startIdx <= endIdx) {
+ int mid = startIdx + (endIdx - startIdx) / 2;
+ long midTs = getBinlogTimestamp(client, binlogFiles.get(mid));
+ if (midTs < targetMs) {
+ startIdx = mid + 1;
+ } else if (targetMs < midTs) {
+ endIdx = mid - 1;
+ } else {
+ return binlogFiles.get(mid);
+ }
+ }
+
+ return endIdx < 0 ? binlogFiles.get(0) : binlogFiles.get(endIdx);
+ }
+
+ public static long getBinlogTimestamp(BinaryLogClient client, String
binlogFile)
+ throws IOException, InterruptedException {
+
+ ArrayBlockingQueue<Long> binlogTimestamps = new
ArrayBlockingQueue<>(1);
Review Comment:
> why we still use queue?
sorry,i fixed it
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