Package com.alibaba.otter.canal.protocol.position

Examples of com.alibaba.otter.canal.protocol.position.Position

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                                                             "clientId:%s has last batch:[%s] isn't ack , maybe loss data",
                                                             clientIdentity.getClientId(), positionRanges));
            }

            Events<Event> events = null;
            Position start = canalInstance.getMetaManager().getCursor(clientIdentity);
            events = getEvents(canalInstance.getEventStore(), start, batchSize, timeout, unit);

            if (CollectionUtils.isEmpty(events.getEvents())) {
                logger.debug("get successfully, clientId:{} batchSize:{} but result is null", new Object[] {
                        clientIdentity.getClientId(), batchSize });
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            Events<Event> events = null;
            if (positionRanges != null) { // 存在流数据
                events = getEvents(canalInstance.getEventStore(), positionRanges.getStart(), batchSize, timeout, unit);
            } else {// ack后第一次获取
                Position start = canalInstance.getMetaManager().getCursor(clientIdentity);
                if (start == null) { // 第一次，还没有过ack记录，则获取当前store中的第一条
                    start = canalInstance.getEventStore().getFirstPosition();
                }

                events = getEvents(canalInstance.getEventStore(), start, batchSize, timeout, unit);
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            canalInstance.getMetaManager().start();
        }

        canalInstance.getMetaManager().subscribe(clientIdentity); // 执行一下meta订阅

        Position position = canalInstance.getMetaManager().getCursor(clientIdentity);
        if (position == null) {
            position = canalInstance.getEventStore().getFirstPosition();// 获取一下store中的第一条
            if (position != null) {
                canalInstance.getMetaManager().updateCursor(clientIdentity, position); // 更新一下cursor
            }
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                                                             "clientId:%s has last batch:[%s] isn't ack , maybe loss data",
                                                             clientIdentity.getClientId(), positionRanges));
            }

            Events<Event> events = null;
            Position start = canalInstance.getMetaManager().getCursor(clientIdentity);
            events = getEvents(canalInstance.getEventStore(), start, batchSize, timeout, unit);

            if (CollectionUtils.isEmpty(events.getEvents())) {
                logger.debug("get successfully, clientId:{} batchSize:{} but result is null", new Object[] {
                        clientIdentity.getClientId(), batchSize });
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            Events<Event> events = null;
            if (positionRanges != null) { // 存在流数据
                events = getEvents(canalInstance.getEventStore(), positionRanges.getStart(), batchSize, timeout, unit);
            } else {// ack后第一次获取
                Position start = canalInstance.getMetaManager().getCursor(clientIdentity);
                if (start == null) { // 第一次，还没有过ack记录，则获取当前store中的第一条
                    start = canalInstance.getEventStore().getFirstPosition();
                }

                events = getEvents(canalInstance.getEventStore(), start, batchSize, timeout, unit);
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                                                         "ack error , clientId:%s batchId:%d is not exist , please check",
                                                         clientIdentity.getClientId(), batchId));
        }

        // 更新cursor最好严格判断下位置是否有跳跃更新
        Position position = lastRollbackPostions.get(clientIdentity);
        if (position != null) {
            // Position position = canalInstance.getMetaManager().getCursor(clientIdentity);
            LogPosition minPosition = CanalEventUtils.min(positionRanges.getStart(), (LogPosition) position);
            if (minPosition == position) {// ack的position要晚于该最后ack的位置，可能有丢数据
                throw new CanalServerException(
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            canalInstance.getMetaManager().start();
        }

        canalInstance.getMetaManager().subscribe(clientIdentity); // 执行一下meta订阅

        Position position = canalInstance.getMetaManager().getCursor(clientIdentity);
        if (position == null) {
            position = canalInstance.getEventStore().getFirstPosition();// 获取一下store中的第一条
            if (position != null) {
                canalInstance.getMetaManager().updateCursor(clientIdentity, position); // 更新一下cursor
            }
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                                                             "clientId:%s has last batch:[%s] isn't ack , maybe loss data",
                                                             clientIdentity.getClientId(), positionRanges));
            }

            Events<Event> events = null;
            Position start = canalInstance.getMetaManager().getCursor(clientIdentity);
            events = getEvents(canalInstance.getEventStore(), start, batchSize, timeout, unit);

            if (CollectionUtils.isEmpty(events.getEvents())) {
                logger.debug("get successfully, clientId:{} batchSize:{} but result is null", new Object[] {
                        clientIdentity.getClientId(), batchSize });
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            Events<Event> events = null;
            if (positionRanges != null) { // 存在流数据
                events = getEvents(canalInstance.getEventStore(), positionRanges.getStart(), batchSize, timeout, unit);
            } else {// ack后第一次获取
                Position start = canalInstance.getMetaManager().getCursor(clientIdentity);
                if (start == null) { // 第一次，还没有过ack记录，则获取当前store中的第一条
                    start = canalInstance.getEventStore().getFirstPosition();
                }

                events = getEvents(canalInstance.getEventStore(), start, batchSize, timeout, unit);
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Related Classes of com.alibaba.otter.canal.protocol.position.Position

  • com.alibaba.otter.canal.meta.AbstractMetaManagerTest
  • com.alibaba.otter.canal.meta.FileMixedMetaManager
  • com.alibaba.otter.canal.meta.FileMixedMetaManagerTest
  • com.alibaba.otter.canal.meta.MixedMetaManager
  • com.alibaba.otter.canal.meta.MixedMetaManagerTest
  • com.alibaba.otter.canal.meta.PeriodMixedMetaManager
  • com.alibaba.otter.canal.meta.PeriodMixedMetaManagerTest
  • com.alibaba.otter.canal.server.embeded.CanalServerWithEmbeded
  • com.alibaba.otter.canal.store.AbstractCanalStoreScavenge
  • com.alibaba.otter.cancel.store.memory.buffer.MemoryEventStoreMemBatchTest
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