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Support for Tagged GTIDs in Previous-GTIDs events #8

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Support for Tagged GTIDs in Previous-GTIDs events #8

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22 changes: 21 additions & 1 deletion ...ava/com/github/shyiko/mysql/binlog/event/deserialization/PreviousGtidSetDeserializer.java
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Original file line number Diff line number Diff line change
Expand Up @@ -27,14 +27,34 @@
*/
public class PreviousGtidSetDeserializer implements EventDataDeserializer<PreviousGtidSetEventData> {

public static final int TAGGED_GTID = 1;

@Override
public PreviousGtidSetEventData deserialize(
ByteArrayInputStream inputStream) throws IOException {
int nUuids = inputStream.readInteger(8);
long nUuidsEncoded = inputStream.readLong(8);
long formatMask = 0xffL << 56;
long nUuidsMask = ~formatMask;
int formatEncoded = (int) ((nUuidsEncoded & formatMask) >> 56);
int nUuids = (int) (nUuidsEncoded & nUuidsMask);

if (formatEncoded == TAGGED_GTID) {
nUuidsMask = 0x00ffffffffffff00L;
nUuids = (int) ((nUuidsEncoded & nUuidsMask) >> 8);
}
String[] gtids = new String[nUuids];
for (int i = 0; i < nUuids; i++) {
String uuid = formatUUID(inputStream.read(16));

if (formatEncoded==TAGGED_GTID) {
int len = inputStream.readInteger(1);
String tag = inputStream.readString(len >> 1);

if (!tag.isEmpty()) {
uuid += ":" + tag;
}
}

int nIntervals = inputStream.readInteger(8);
String[] intervals = new String[nIntervals];
for (int j = 0; j < nIntervals; j++) {
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