Examples with Table org.apache.rocketmq.connect.cassandra.schema.Table used on opensource projects

Example 1 with Table

use of org.apache.rocketmq.connect.cassandra.schema.Table in project rocketmq-externals by apache.

the class Querier method poll.

public void poll() {
    try {
        LinkedList<Table> tableLinkedList = new LinkedList<>();
        for (Map.Entry<String, Database> entry : schema.getDbMap().entrySet()) {
            String dbName = entry.getKey();
            Iterator<Map.Entry<String, Table>> iterator = entry.getValue().getTableMap().entrySet().iterator();
            while (iterator.hasNext()) {
                Map.Entry<String, Table> tableEntry = iterator.next();
                String tableName = tableEntry.getKey();
                Table table = tableEntry.getValue();
                Map<String, String> tableFilterMap = table.getFilterMap();
                Select selectFrom = QueryBuilder.selectFrom(dbName, tableName).all();
                if (tableFilterMap != null && !tableFilterMap.keySet().contains("NO-FILTER")) {
                    for (String key : tableFilterMap.keySet()) {
                        String value = tableFilterMap.get(key);
                        selectFrom.whereColumn(key).isEqualTo(QueryBuilder.literal(value));
                    }
                }
                SimpleStatement stmt;
                boolean finishUpdate = false;
                log.info("trying to execute sql query,{}", selectFrom.asCql());
                ResultSet result = null;
                while (!cqlSession.isClosed() && !finishUpdate) {
                    stmt = selectFrom.build();
                    result = cqlSession.execute(stmt);
                    if (result.wasApplied()) {
                        log.info("query columns success, executed cql query {}", selectFrom.asCql());
                    }
                    finishUpdate = true;
                }
                List<String> colList = tableEntry.getValue().getColList();
                List<String> dataTypeList = tableEntry.getValue().getRawDataTypeList();
                List<ColumnParser> parserList = tableEntry.getValue().getParserList();
                for (Row row : result) {
                    Table tableWithData = new Table(dbName, tableName);
                    tableWithData.setColList(colList);
                    tableWithData.setRawDataTypeList(dataTypeList);
                    tableWithData.setParserList(parserList);
                    for (String col : colList) {
                        tableWithData.getDataList().add(row.getObject(col));
                    }
                    tableLinkedList.add(tableWithData);
                }
            }
        }
        list = tableLinkedList;
    } catch (Exception e) {
        log.error("fail to poll data, {}", e);
    }
}

Example 2 with Table

use of org.apache.rocketmq.connect.cassandra.schema.Table in project rocketmq-externals by apache.

the class CassandraSourceTask method poll.

@Override
public Collection<SourceDataEntry> poll() {
    List<SourceDataEntry> res = new ArrayList<>();
    try {
        if (tableQueue.size() > 1)
            querier = tableQueue.poll(1000, TimeUnit.MILLISECONDS);
        else
            querier = tableQueue.peek();
        Timer timer = new Timer();
        try {
            Thread.currentThread();
            // 毫秒
            Thread.sleep(1000);
        } catch (Exception e) {
            throw e;
        }
        querier.poll();
        for (Table dataRow : querier.getList()) {
            JSONObject jsonObject = new JSONObject();
            jsonObject.put("nextQuery", "database");
            jsonObject.put("nextPosition", "table");
            Schema schema = new Schema();
            schema.setDataSource(dataRow.getDatabase());
            schema.setName(dataRow.getName());
            schema.setFields(new ArrayList<>());
            for (int i = 0; i < dataRow.getColList().size(); i++) {
                String columnName = dataRow.getColList().get(i);
                String rawDataType = dataRow.getRawDataTypeList().get(i);
                Field field = new Field(i, columnName, ColumnParser.mapConnectorFieldType(rawDataType));
                schema.getFields().add(field);
            }
            DataEntryBuilder dataEntryBuilder = new DataEntryBuilder(schema);
            dataEntryBuilder.timestamp(System.currentTimeMillis()).queue(dataRow.getName()).entryType(EntryType.UPDATE);
            for (int i = 0; i < dataRow.getColList().size(); i++) {
                Object[] value = new Object[2];
                value[0] = value[1] = dataRow.getParserList().get(i).getValue(dataRow.getDataList().get(i));
                dataEntryBuilder.putFiled(dataRow.getColList().get(i), JSONObject.toJSONString(value));
            }
            SourceDataEntry sourceDataEntry = dataEntryBuilder.buildSourceDataEntry(ByteBuffer.wrap((ConstDefine.PREFIX + config.getDbUrl() + config.getDbPort()).getBytes(StandardCharsets.UTF_8)), ByteBuffer.wrap(jsonObject.toJSONString().getBytes(StandardCharsets.UTF_8)));
            res.add(sourceDataEntry);
            log.debug("sourceDataEntry : {}", JSONObject.toJSONString(sourceDataEntry));
        }
    } catch (Exception e) {
        log.error("Cassandra task poll error, current config:" + JSON.toJSONString(config), e);
    }
    log.debug("dataEntry poll successfully,{}", JSONObject.toJSONString(res));
    return res;
}