healchow commented on code in PR #7253: URL: https://github.com/apache/inlong/pull/7253#discussion_r1098235003
########## inlong-sort/sort-connectors/jdbc/src/main/java/org/apache/inlong/sort/jdbc/internal/TableMetricStatementExecutor.java: ########## @@ -0,0 +1,260 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.inlong.sort.jdbc.internal; + +import org.apache.flink.connector.jdbc.internal.converter.JdbcRowConverter; +import org.apache.flink.connector.jdbc.internal.executor.JdbcBatchStatementExecutor; +import org.apache.flink.connector.jdbc.statement.FieldNamedPreparedStatement; +import org.apache.flink.connector.jdbc.statement.StatementFactory; +import org.apache.flink.table.data.RowData; +import org.apache.inlong.sort.base.dirty.DirtySinkHelper; +import org.apache.inlong.sort.base.dirty.DirtyType; +import org.apache.inlong.sort.base.metric.SinkMetricData; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.nio.charset.StandardCharsets; +import java.sql.Connection; +import java.sql.SQLException; +import java.util.ArrayList; +import java.util.List; +import java.util.concurrent.CopyOnWriteArrayList; +import java.util.concurrent.atomic.AtomicInteger; +import java.util.function.Function; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +import static org.apache.flink.util.Preconditions.checkNotNull; + +/** + * A {@link JdbcBatchStatementExecutor} that simply adds the records into batches of {@link + * java.sql.PreparedStatement} and doesn't buffer records in memory. Only used in Table/SQL API. + */ +public final class TableMetricStatementExecutor implements JdbcBatchStatementExecutor<RowData> { + + private static final Pattern pattern = Pattern.compile("Batch entry (\\d+)"); + private static final Logger LOG = LoggerFactory.getLogger(TableMetricStatementExecutor.class); + private final StatementFactory stmtFactory; + private final JdbcRowConverter converter; + private List<RowData> batch; + private final DirtySinkHelper<Object> dirtySinkHelper; + private final SinkMetricData sinkMetricData; + private final AtomicInteger counter = new AtomicInteger(); + private transient FieldNamedPreparedStatement st; + private boolean multipleSink; + private Function<RowData, RowData> valueTransform = null; + // counters used for table level metric calculation for multiple sink + public long[] metric = new long[4]; + + public TableMetricStatementExecutor(StatementFactory stmtFactory, JdbcRowConverter converter, + DirtySinkHelper<Object> dirtySinkHelper, SinkMetricData sinkMetricData) { + this.stmtFactory = checkNotNull(stmtFactory); + this.converter = checkNotNull(converter); + this.batch = new CopyOnWriteArrayList<>(); + this.dirtySinkHelper = dirtySinkHelper; + this.sinkMetricData = sinkMetricData; + } + + @Override + public void prepareStatements(Connection connection) throws SQLException { + st = stmtFactory.createStatement(connection); + } + + public void setMultipleSink(boolean multipleSink) { + this.multipleSink = multipleSink; + } + + public void setValueTransform(Function<RowData, RowData> valueTransform) { + this.valueTransform = valueTransform; + } + + @Override + public void addToBatch(RowData record) throws SQLException { + LOG.info("adding {} into batch", record); + if (valueTransform != null) { + record = valueTransform.apply(record); // copy or not + } + batch.add(record); + LOG.info("adding {} into batch 2", record); + converter.toExternal(record, st); + st.addBatch(); + LOG.info("adding {} into batch 3", record); + } + + @Override + public void executeBatch() throws SQLException { + for (RowData record : batch) { + LOG.info("print batch:{}", record); + } + + try { + st.executeBatch(); + + long writtenSize = batch.size(); + // approximate since it may be inefficient to iterate over all writtenSize-1 elements. + long writtenBytes = 0L; + if (writtenSize > 0) { + writtenBytes = (long) batch.get(0).toString().getBytes(StandardCharsets.UTF_8).length * writtenSize; + } + batch.clear(); + if (!multipleSink) { + sinkMetricData.invoke(writtenSize, writtenBytes); + LOG.info("print {} records invoke clean", writtenSize); + } else { + metric[0] += writtenSize; + metric[1] += writtenBytes; + } + + } catch (SQLException e) { + // clear the prepared statement first to avoid exceptions + st.clearParameters(); + LOG.info("record parse start {}, exception cause {}", counter, e); + + try { + List<Integer> errorPositions = parseError(e); + + for (int pos : errorPositions) { + LOG.info("dirty data detected:{}", batch.get(pos)); + } + // the data before the first sqlexception are already written, handle those and remove them. + int writtenSize = errorPositions.get(0); + long writtenBytes = 0L; + if (writtenSize > 0) { + writtenBytes = (long) batch.get(0).toString().getBytes(StandardCharsets.UTF_8).length * writtenSize; + } + if (!multipleSink) { + sinkMetricData.invoke(writtenSize, writtenBytes); + LOG.info("print {} records invoke clean", writtenSize); + } else { + metric[0] += writtenSize; + metric[1] += writtenBytes; + } + + batch = batch.subList(writtenSize, batch.size()); + + // for the unwritten data, remove the dirty ones + for (int pos : errorPositions) { + pos -= writtenSize; + RowData record = batch.get(pos); + batch.remove(record); + dirtySinkHelper.invoke(record, DirtyType.BATCH_LOAD_ERROR, new SQLException("jdbc dirty record")); + if (!multipleSink) { + sinkMetricData.invokeDirty(1, record.toString().getBytes(StandardCharsets.UTF_8).length); + LOG.info("print record:{} invoke dirty", record); + } else { + metric[2]++; + metric[3] += record.toString().getBytes(StandardCharsets.UTF_8).length; + } + } + + // try to execute the supposedly clean batch, throw exception on failure + for (RowData record : batch) { + addToBatch(record); + } + st.executeBatch(); + batch.clear(); + st.clearParameters(); + } catch (Exception ex) { + retryEntireBatch(); + } + } + } + + private void retryEntireBatch() throws SQLException { + // clear parameters to make sure the batch is always clean in the end. + st.clearParameters(); + for (RowData rowData : batch) { + try { + addToBatch(rowData); + st.executeBatch(); + if (!multipleSink) { + sinkMetricData.invoke(1, rowData.toString().getBytes().length); + LOG.info("print {} records invoke clean", 1); + } else { + metric[0] += 1; + metric[1] += rowData.toString().getBytes().length; + } + st.clearParameters(); + } catch (Exception e) { + st.clearParameters(); + dirtySinkHelper.invoke(rowData, DirtyType.BATCH_LOAD_ERROR, e); + if (!multipleSink) { + sinkMetricData.invokeDirty(1, rowData.toString().getBytes().length); + LOG.info("print {} records invoke dirty", 1); + } else { + metric[2] += 1; + metric[3] += rowData.toString().getBytes().length; + } + } + } + batch.clear(); + } + + private List<Integer> parseError(SQLException e) throws SQLException { + List<Integer> errors = new ArrayList<>(); + LOG.info("error message {}", e.getMessage()); + int pos = getPosFromMessage(e.getMessage()); + if (pos != -1) { + errors.add(getPosFromMessage(e.getMessage())); + } else { + throw e; + } + SQLException next = e.getNextException(); + if (next != null) { + errors.addAll(parseError(next)); + } + return errors; + } + + private int getPosFromMessage(String message) { + Matcher matcher = pattern.matcher(message); + if (matcher.find()) { + int pos = Integer.parseInt(matcher.group(1)); + // duplicate key is a special case, return the second duplicate instead of the first + if (message.contains("duplicate key")) { + return getSecondOccurance(pos); + } + return pos; + } + LOG.error("error no2"); + return -1; + } + + private int getSecondOccurance(int pos) { + RowData record = batch.get(pos); + int counter = 0; + for (int i = 0; i < batch.size(); i++) { + if (batch.get(i).equals(record)) { + counter++; + } + if (counter == 2) { + return i; + } + } + LOG.error("error no1"); Review Comment: ditto, -- This is an automated message from the Apache Git Service. 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