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spark-doris-connector/src/main/java/org/apache/doris/spark/load/RecordBatchString.java
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| // 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. | ||
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| package org.apache.doris.spark.load; | ||
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| import com.fasterxml.jackson.core.JsonProcessingException; | ||
| import org.apache.doris.spark.exception.DorisException; | ||
| import org.apache.doris.spark.exception.IllegalArgumentException; | ||
| import org.apache.doris.spark.util.DataUtil; | ||
| import org.apache.spark.sql.catalyst.InternalRow; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import java.io.IOException; | ||
| import java.util.Iterator; | ||
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| /** | ||
| * InputStream for batch load | ||
| */ | ||
| public class RecordBatchString { | ||
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| public static final Logger LOG = LoggerFactory.getLogger(RecordBatchString.class); | ||
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| /** | ||
| * Load record batch | ||
| */ | ||
| private final RecordBatch recordBatch; | ||
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| private final byte[] delim; | ||
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| /** | ||
| * record count has been read | ||
| */ | ||
| private int readCount = 0; | ||
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| /** | ||
| * streaming mode pass through data without process | ||
| */ | ||
| private final boolean passThrough; | ||
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| public RecordBatchString(RecordBatch recordBatch, boolean passThrough) { | ||
| this.recordBatch = recordBatch; | ||
| this.passThrough = passThrough; | ||
| this.delim = recordBatch.getDelim(); | ||
| } | ||
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| public String getContent() throws IOException { | ||
| String delimStr = new String(this.recordBatch.getDelim()); | ||
| StringBuilder builder = new StringBuilder(); | ||
| Iterator<InternalRow> iterator = recordBatch.getIterator(); | ||
| while (iterator.hasNext()) { | ||
| try { | ||
| builder.append(rowToString(iterator.next())); | ||
| } catch (DorisException e) { | ||
| throw new IOException(e); | ||
| } | ||
| builder.append(delimStr); | ||
| } | ||
| return builder.toString().substring(0, builder.length()-delimStr.length()); | ||
| } | ||
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| /** | ||
| * Convert Spark row data to string | ||
| * | ||
| * @param row row data | ||
| * @return byte array | ||
| * @throws DorisException | ||
| */ | ||
| private String rowToString(InternalRow row) throws DorisException { | ||
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| String str; | ||
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| if (passThrough) { | ||
| str = row.getString(0); | ||
| return str; | ||
| } | ||
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| switch (recordBatch.getFormat()) { | ||
| case CSV: | ||
| str = DataUtil.rowToCsvString(row, recordBatch.getSchema(), recordBatch.getSep(), recordBatch.getAddDoubleQuotes()); | ||
| break; | ||
| case JSON: | ||
| try { | ||
| str = DataUtil.rowToJsonString(row, recordBatch.getSchema()); | ||
| } catch (JsonProcessingException e) { | ||
| throw new DorisException("parse row to json bytes failed", e); | ||
| } | ||
| break; | ||
| default: | ||
| throw new IllegalArgumentException("Unsupported format: ", recordBatch.getFormat().toString()); | ||
| } | ||
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| return str; | ||
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| } | ||
| } |
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