Refactoring the doriswriter write plugin

Refactoring the doriswriter write plugin

doriswriter/doc/doriswriter.md

@@ -43,6 +43,7 @@ DorisWriter 通过Doris原生支持Stream load方式导入数据， DorisWriter
                         "password": "xxxxxx",
                         "postSql": ["select count(1) from all_employees_info"],
                         "preSql": [],
+                        "flushInterval":30000,
                         "connection": [
                           {
                             "jdbcUrl": "jdbc:mysql://172.16.0.13:9030/demo",
@@ -77,7 +78,7 @@ DorisWriter 通过Doris原生支持Stream load方式导入数据， DorisWriter
 
 * **loadUrl**
 
-  - 描述：和 **beLoadUrl** 二选一。作为 Stream Load 的连接目标。格式为 "ip:port"。其中 IP 是 FE 节点 IP，port 是 FE 节点的 http_port。可以填写多个，doriswriter 将以轮询的方式访问。
+  - 描述：作为 Stream Load 的连接目标。格式为 "ip:port"。其中 IP 是 FE 节点 IP，port 是 FE 节点的 http_port。可以填写多个，多个之间使用英文状态的分号隔开:`;`，doriswriter 将以轮询的方式访问。
   - 必选：是
   - 默认值：无
 
@@ -88,23 +89,21 @@ DorisWriter 通过Doris原生支持Stream load方式导入数据， DorisWriter
     - 默认值：无
     
 * **password**
-    
+  
     - 描述：访问Doris数据库的密码
     - 必选：否
     - 默认值：空
 
-* **database**
-
+* **connection.selectedDatabase**
     - 描述：需要写入的Doris数据库名称。
     - 必选：是
     - 默认值：无
     
-* **table**
-    
-    - 描述：需要写入的Doris表名称。
+* **connection.table**
+  - 描述：需要写入的Doris表名称。
     - 必选：是
     - 默认值：无
-
+    
 * **column**
 
     - 描述：目的表**需要写入数据**的字段，这些字段将作为生成的 Json 数据的字段名。字段之间用英文逗号分隔。例如: "column": ["id","name","age"]。
@@ -144,32 +143,26 @@ DorisWriter 通过Doris原生支持Stream load方式导入数据， DorisWriter
 
 * **labelPrefix**
 
-  - 描述：每批次导入任务的 label 前缀。最终的 label 将有 `labelPrefix + UUID + 序号` 组成
+  - 描述：每批次导入任务的 label 前缀。最终的 label 将有 `labelPrefix + UUID` 组成全局唯一的 label，确保数据不会重复导入
   - 必选：否
   - 默认值：`datax_doris_writer_`
 
-* **format**
-
-  - 描述：StreamLoad数据的组装格式，支持csv和json格式。csv默认的行分隔符是\x01,列分隔符是\x02。
-  - 必选：否
-  - 默认值：csv
-  
 * **loadProps**
 
-  - 描述：StreamLoad 的请求参数，详情参照StreamLoad介绍页面。
+  - 描述：StreamLoad 的请求参数，详情参照StreamLoad介绍页面。[Stream load - Apache Doris](https://doris.apache.org/zh-CN/docs/data-operate/import/import-way/stream-load-manual)
+
+    这里包括导入的数据格式：format等，导入数据格式默认我们使用csv，支持JSON，具体可以参照下面类型转换部分，也可以参照上面Stream load 官方信息
+
   - 必选：否
+
   - 默认值：无
 
-* **connectTimeout**
-
-  - 描述：StreamLoad单次请求的超时时间, 单位毫秒(ms)。
-  - 必选：否
-  - 默认值：-1
-
 ### 类型转换
 
 默认传入的数据均会被转为字符串，并以`\t`作为列分隔符，`\n`作为行分隔符，组成`csv`文件进行StreamLoad导入操作。
-如需更改列分隔符， 则正确配置 `loadProps` 即可：
+
+默认是csv格式导入，如需更改列分隔符， 则正确配置 `loadProps` 即可：
+
 ```json
 "loadProps": {
     "column_separator": "\\x01",
@@ -183,4 +176,6 @@ DorisWriter 通过Doris原生支持Stream load方式导入数据， DorisWriter
     "format": "json",
     "strip_outer_array": true
 }
-```
+```
+
+更多信息请参照 Doris 官网：[Stream load - Apache Doris](https://doris.apache.org/zh-CN/docs/data-operate/import/import-way/stream-load-manual)

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DelimiterParser.java

@@ -4,7 +4,7 @@ import com.google.common.base.Strings;
 
 import java.io.StringWriter;
 
-public class DorisDelimiterParser {
+public class DelimiterParser {
 
     private static final String HEX_STRING = "0123456789ABCDEF";
 

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisBaseCodec.java

@@ -2,8 +2,8 @@ package com.alibaba.datax.plugin.writer.doriswriter;
 
 import com.alibaba.datax.common.element.Column;
 
-public class DorisBaseSerializer {
-    protected String fieldConvertion( Column col) {
+public class DorisBaseCodec {
+    protected String convertionField( Column col) {
         if (null == col.getRawData() || Column.Type.NULL == col.getType()) {
             return null;
         }

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisCodec.java

@@ -4,7 +4,7 @@ import com.alibaba.datax.common.element.Record;
 
 import java.io.Serializable;
 
-public interface DorisSerializer extends Serializable {
+public interface DorisCodec extends Serializable {
 
-    String serialize( Record row);
+    String codec( Record row);
 }

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisCodecFactory.java

@@ -0,0 +1,19 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import java.util.Map;
+
+public class DorisCodecFactory {
+    public DorisCodecFactory (){
+
+    }
+    public static DorisCodec createCodec( Keys writerOptions) {
+        if ( Keys.StreamLoadFormat.CSV.equals(writerOptions.getStreamLoadFormat())) {
+            Map<String, Object> props = writerOptions.getLoadProps();
+            return new DorisCsvCodec (null == props || !props.containsKey("column_separator") ? null : String.valueOf(props.get("column_separator")));
+        }
+        if ( Keys.StreamLoadFormat.JSON.equals(writerOptions.getStreamLoadFormat())) {
+            return new DorisJsonCodec (writerOptions.getColumns());
+        }
+        throw new RuntimeException("Failed to create row serializer, unsupported `format` from stream load properties.");
+    }
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisCsvCodec.java

@@ -2,20 +2,21 @@ package com.alibaba.datax.plugin.writer.doriswriter;
 
 import com.alibaba.datax.common.element.Record;
 
-public class DorisCsvSerializer extends DorisBaseSerializer implements DorisSerializer{
+public class DorisCsvCodec extends DorisBaseCodec implements DorisCodec {
+
     private static final long serialVersionUID = 1L;
 
     private final String columnSeparator;
 
-    public DorisCsvSerializer(String sp) {
-        this.columnSeparator = DorisDelimiterParser.parse(sp, "\t");
+    public DorisCsvCodec ( String sp) {
+        this.columnSeparator = DelimiterParser.parse(sp, "\t");
     }
 
     @Override
-    public String serialize( Record row) {
+    public String codec( Record row) {
         StringBuilder sb = new StringBuilder();
         for (int i = 0; i < row.getColumnNumber(); i++) {
-            String value = fieldConvertion(row.getColumn(i));
+            String value = convertionField(row.getColumn(i));
             sb.append(null == value ? "\\N" : value);
             if (i < row.getColumnNumber() - 1) {
                 sb.append(columnSeparator);

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisJsonCodec.java

@@ -7,25 +7,25 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-public class DorisJsonSerializer extends DorisBaseSerializer implements DorisSerializer{
+public class DorisJsonCodec extends DorisBaseCodec implements DorisCodec {
 
     private static final long serialVersionUID = 1L;
 
     private final List<String> fieldNames;
 
-    public DorisJsonSerializer( List<String> fieldNames) {
+    public DorisJsonCodec ( List<String> fieldNames) {
         this.fieldNames = fieldNames;
     }
 
     @Override
-    public String serialize( Record row) {
+    public String codec( Record row) {
         if (null == fieldNames) {
             return "";
         }
         Map<String, Object> rowMap = new HashMap<> (fieldNames.size());
         int idx = 0;
         for (String fieldName : fieldNames) {
-            rowMap.put(fieldName, fieldConvertion(row.getColumn(idx)));
+            rowMap.put(fieldName, convertionField(row.getColumn(idx)));
             idx++;
         }
         return JSON.toJSONString(rowMap);

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisSerializerFactory.java

@@ -1,19 +0,0 @@
-package com.alibaba.datax.plugin.writer.doriswriter;
-
-import java.util.Map;
-
-public class DorisSerializerFactory {
-    public DorisSerializerFactory(){
-
-    }
-    public static DorisSerializer createSerializer(DorisWriterOptions writerOptions) {
-        if (DorisWriterOptions.StreamLoadFormat.CSV.equals(writerOptions.getStreamLoadFormat())) {
-            Map<String, Object> props = writerOptions.getLoadProps();
-            return new DorisCsvSerializer(null == props || !props.containsKey("column_separator") ? null : String.valueOf(props.get("column_separator")));
-        }
-        if (DorisWriterOptions.StreamLoadFormat.JSON.equals(writerOptions.getStreamLoadFormat())) {
-            return new DorisJsonSerializer(writerOptions.getColumns());
-        }
-        throw new RuntimeException("Failed to create row serializer, unsupported `format` from stream load properties.");
-    }
-}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisStreamLoadObserver.java

@@ -27,10 +27,10 @@ import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
-public class DorisStreamLoadVisitor {
-    private static final Logger LOG = LoggerFactory.getLogger(DorisStreamLoadVisitor.class);
+public class DorisStreamLoadObserver {
+    private static final Logger LOG = LoggerFactory.getLogger(DorisStreamLoadObserver.class);
 
-    private DorisWriterOptions options;
+    private Keys options;
 
     private long pos;
     private static final String RESULT_FAILED = "Fail";
@@ -42,14 +42,14 @@ public class DorisStreamLoadVisitor {
     private static final String RESULT_LABEL_UNKNOWN = "UNKNOWN";
 
 
-    public DorisStreamLoadVisitor(DorisWriterOptions options){
+    public DorisStreamLoadObserver ( Keys options){
         this.options = options;
     }
 
-    public void streamLoad(DorisWriterTuple data) throws Exception {
-        String host = getAvailableHost();
+    public void streamLoad(WriterTuple data) throws Exception {
+        String host = getLoadHost();
         if(host == null){
-            throw new IOException ("None of the host in `load_url` could be connected.");
+            throw new IOException ("load_url cannot be empty, or the host cannot connect.Please check your configuration.");
         }
         String loadUrl = new StringBuilder(host)
                 .append("/api/")
@@ -58,25 +58,25 @@ public class DorisStreamLoadVisitor {
                 .append(options.getTable())
                 .append("/_stream_load")
                 .toString();
-        LOG.debug(String.format("Start to join batch data: rows[%d] bytes[%d] label[%s].", data.getRows().size(), data.getBytes(), data.getLabel()));
-        Map<String, Object> loadResult = doHttpPut(loadUrl, data.getLabel(), joinRows(data.getRows(), data.getBytes().intValue()));
+        LOG.info("Start to join batch data: rows[{}] bytes[{}] label[{}].", data.getRows().size(), data.getBytes(), data.getLabel());
+        Map<String, Object> loadResult = put(loadUrl, data.getLabel(), addRows(data.getRows(), data.getBytes().intValue()));
+        LOG.info("StreamLoad response :{}",JSON.toJSONString(loadResult));
         final String keyStatus = "Status";
         if (null == loadResult || !loadResult.containsKey(keyStatus)) {
             throw new IOException("Unable to flush data to Doris: unknown result status.");
         }
-        LOG.debug(new StringBuilder("StreamLoad response:\n").append(JSON.toJSONString(loadResult)).toString());
+        LOG.debug("StreamLoad response:{}",JSON.toJSONString(loadResult));
         if (RESULT_FAILED.equals(loadResult.get(keyStatus))) {
             throw new IOException(
                     new StringBuilder("Failed to flush data to Doris.\n").append(JSON.toJSONString(loadResult)).toString()
             );
         } else if (RESULT_LABEL_EXISTED.equals(loadResult.get(keyStatus))) {
-            LOG.debug(new StringBuilder("StreamLoad response:\n").append(JSON.toJSONString(loadResult)).toString());
-            // has to block-checking the state to get the final result
-            checkLabelState(host, data.getLabel());
+            LOG.debug("StreamLoad response:{}",JSON.toJSONString(loadResult));
+            checkStreamLoadState(host, data.getLabel());
         }
     }
 
-    private void checkLabelState(String host, String label) throws IOException {
+    private void checkStreamLoadState(String host, String label) throws IOException {
         int idx = 0;
         while(true) {
             try {
@@ -109,7 +109,7 @@ public class DorisStreamLoadVisitor {
                         case RESULT_LABEL_PREPARE:
                             continue;
                         case RESULT_LABEL_ABORTED:
-                            throw new DorisStreamLoadExcetion(String.format("Failed to flush data to Doris, Error " +
+                            throw new DorisWriterExcetion (String.format("Failed to flush data to Doris, Error " +
                                     "label[%s] state[%s]\n", label, labelState), null, true);
                         case RESULT_LABEL_UNKNOWN:
                         default:
@@ -121,10 +121,10 @@ public class DorisStreamLoadVisitor {
         }
     }
 
-    private byte[] joinRows(List<byte[]> rows, int totalBytes) {
-        if (DorisWriterOptions.StreamLoadFormat.CSV.equals(options.getStreamLoadFormat())) {
+    private byte[] addRows(List<byte[]> rows, int totalBytes) {
+        if (Keys.StreamLoadFormat.CSV.equals(options.getStreamLoadFormat())) {
             Map<String, Object> props = (options.getLoadProps() == null ? new HashMap<> () : options.getLoadProps());
-            byte[] lineDelimiter = DorisDelimiterParser.parse((String)props.get("row_delimiter"), "\n").getBytes(StandardCharsets.UTF_8);
+            byte[] lineDelimiter = DelimiterParser.parse((String)props.get("row_delimiter"), "\n").getBytes(StandardCharsets.UTF_8);
             ByteBuffer bos = ByteBuffer.allocate(totalBytes + rows.size() * lineDelimiter.length);
             for (byte[] row : rows) {
                 bos.put(row);
@@ -133,7 +133,7 @@ public class DorisStreamLoadVisitor {
             return bos.array();
         }
 
-        if (DorisWriterOptions.StreamLoadFormat.JSON.equals(options.getStreamLoadFormat())) {
+        if (Keys.StreamLoadFormat.JSON.equals(options.getStreamLoadFormat())) {
             ByteBuffer bos = ByteBuffer.allocate(totalBytes + (rows.isEmpty() ? 2 : rows.size() + 1));
             bos.put("[".getBytes(StandardCharsets.UTF_8));
             byte[] jsonDelimiter = ",".getBytes(StandardCharsets.UTF_8);
@@ -150,7 +150,7 @@ public class DorisStreamLoadVisitor {
         }
         throw new RuntimeException("Failed to join rows data, unsupported `format` from stream load properties:");
     }
-    private Map<String, Object> doHttpPut(String loadUrl, String label, byte[] data) throws IOException {
+    private Map<String, Object> put(String loadUrl, String label, byte[] data) throws IOException {
         LOG.info(String.format("Executing stream load to: '%s', size: '%s'", loadUrl, data.length));
         final HttpClientBuilder httpClientBuilder = HttpClients.custom()
                 .setRedirectStrategy(new DefaultRedirectStrategy () {
@@ -162,7 +162,7 @@ public class DorisStreamLoadVisitor {
         try ( CloseableHttpClient httpclient = httpClientBuilder.build()) {
             HttpPut httpPut = new HttpPut(loadUrl);
             List<String> cols = options.getColumns();
-            if (null != cols && !cols.isEmpty() && DorisWriterOptions.StreamLoadFormat.CSV.equals(options.getStreamLoadFormat())) {
+            if (null != cols && !cols.isEmpty() && Keys.StreamLoadFormat.CSV.equals(options.getStreamLoadFormat())) {
                 httpPut.setHeader("columns", String.join(",", cols.stream().map(f -> String.format("`%s`", f)).collect(Collectors.toList())));
             }
             if (null != options.getLoadProps()) {
@@ -205,19 +205,19 @@ public class DorisStreamLoadVisitor {
         return respEntity;
     }
 
-    private String getAvailableHost() {
+    private String getLoadHost() {
         List<String> hostList = options.getLoadUrlList();
         long tmp = pos + hostList.size();
         for (; pos < tmp; pos++) {
             String host = new StringBuilder("http://").append(hostList.get((int) (pos % hostList.size()))).toString();
-            if (tryHttpConnection(host)) {
+            if (checkConnection(host)) {
                 return host;
             }
         }
         return null;
     }
 
-    private boolean tryHttpConnection(String host) {
+    private boolean checkConnection(String host) {
         try {
             URL url = new URL(host);
             HttpURLConnection co =  (HttpURLConnection) url.openConnection();
@@ -226,7 +226,7 @@ public class DorisStreamLoadVisitor {
             co.disconnect();
             return true;
         } catch (Exception e1) {
-            LOG.warn("Failed to connect to address:{}", host, e1);
+            e1.printStackTrace();
             return false;
         }
     }

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisUtil.java

@@ -71,7 +71,7 @@ public class DorisUtil {
         }
     }
 
-    public static void preCheckPrePareSQL(DorisWriterOptions options) {
+    public static void preCheckPrePareSQL( Keys options) {
         String table = options.getTable();
         List<String> preSqls = options.getPreSqlList();
         List<String> renderedPreSqls = DorisUtil.renderPreOrPostSqls(preSqls, table);
@@ -87,7 +87,7 @@ public class DorisUtil {
         }
     }
 
-    public static void preCheckPostSQL(DorisWriterOptions options) {
+    public static void preCheckPostSQL( Keys options) {
         String table = options.getTable();
         List<String> postSqls = options.getPostSqlList();
         List<String> renderedPostSqls = DorisUtil.renderPreOrPostSqls(postSqls, table);

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisWriter.java

@@ -25,19 +25,12 @@ import com.alibaba.datax.common.util.Configuration;
 import com.alibaba.datax.plugin.rdbms.util.DBUtil;
 import com.alibaba.datax.plugin.rdbms.util.DBUtilErrorCode;
 import com.alibaba.datax.plugin.rdbms.util.DataBaseType;
-import com.alibaba.datax.plugin.rdbms.util.RdbmsException;
-import com.alibaba.datax.plugin.rdbms.writer.Constant;
-import com.alibaba.druid.sql.parser.ParserException;
-import com.google.common.base.Strings;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.sql.Connection;
-import java.sql.Statement;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.List;
-import java.util.UUID;
 
 /**
  * doris data writer
@@ -48,12 +41,12 @@ public class DorisWriter extends Writer {
 
         private static final Logger LOG = LoggerFactory.getLogger(Job.class);
         private Configuration originalConfig = null;
-        private DorisWriterOptions options;
+        private Keys options;
 
         @Override
         public void init() {
             this.originalConfig = super.getPluginJobConf();
-            options = new DorisWriterOptions(super.getPluginJobConf());
+            options = new Keys (super.getPluginJobConf());
             options.doPretreatment();
         }
 
@@ -92,11 +85,10 @@ public class DorisWriter extends Writer {
             String username = options.getUsername();
             String password = options.getPassword();
             String jdbcUrl = options.getJdbcUrl();
-            LOG.info("userName :{},password:{},jdbcUrl:{}.", username,password,jdbcUrl);
             List<String> renderedPostSqls = DorisUtil.renderPreOrPostSqls(options.getPostSqlList(), options.getTable());
             if (null != renderedPostSqls && !renderedPostSqls.isEmpty()) {
                 Connection conn = DBUtil.getConnection(DataBaseType.MySql, jdbcUrl, username, password);
-                LOG.info("Begin to execute preSqls:[{}]. context info:{}.", String.join(";", renderedPostSqls), jdbcUrl);
+                LOG.info("Start to execute preSqls:[{}]. context info:{}.", String.join(";", renderedPostSqls), jdbcUrl);
                 DorisUtil.executeSqls(conn, renderedPostSqls);
                 DBUtil.closeDBResources(null, null, conn);
             }
@@ -110,19 +102,19 @@ public class DorisWriter extends Writer {
 
     public static class Task extends Writer.Task {
         private DorisWriterManager writerManager;
-        private DorisWriterOptions options;
-        private DorisSerializer rowSerializer;
+        private Keys options;
+        private DorisCodec rowCodec;
 
         @Override
         public void init() {
-            options = new DorisWriterOptions(super.getPluginJobConf());
+            options = new Keys (super.getPluginJobConf());
             if (options.isWildcardColumn()) {
                 Connection conn = DBUtil.getConnection(DataBaseType.MySql, options.getJdbcUrl(), options.getUsername(), options.getPassword());
                 List<String> columns = DorisUtil.getDorisTableColumns(conn, options.getDatabase(), options.getTable());
                 options.setInfoCchemaColumns(columns);
             }
             writerManager = new DorisWriterManager(options);
-            rowSerializer = DorisSerializerFactory.createSerializer(options);
+            rowCodec = DorisCodecFactory.createCodec(options);
         }
 
         @Override
@@ -138,11 +130,14 @@ public class DorisWriter extends Writer {
                                 .asDataXException(
                                         DBUtilErrorCode.CONF_ERROR,
                                         String.format(
-                                                "列配置信息有错误. 因为您配置的任务中，源头读取字段数:%s 与 目的表要写入的字段数:%s 不相等. 请检查您的配置并作出修改.",
+                                                "There is an error in the column configuration information. " +
+                                                "This is because you have configured a task where the number of fields to be read from the source:%s " +
+                                                "is not equal to the number of fields to be written to the destination table:%s. " +
+                                                "Please check your configuration and make changes.",
                                                 record.getColumnNumber(),
                                                 options.getColumns().size()));
                     }
-                    writerManager.writeRecord(rowSerializer.serialize(record));
+                    writerManager.writeRecord(rowCodec.codec(record));
                 }
             } catch (Exception e) {
                 throw DataXException.asDataXException(DBUtilErrorCode.WRITE_DATA_ERROR, e);

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisWriterExcetion.java

@@ -3,17 +3,17 @@ package com.alibaba.datax.plugin.writer.doriswriter;
 import java.io.IOException;
 import java.util.Map;
 
-public class DorisStreamLoadExcetion extends IOException {
+public class DorisWriterExcetion extends IOException {
 
     private final Map<String, Object> response;
     private boolean reCreateLabel;
 
-    public DorisStreamLoadExcetion(String message, Map<String, Object> response) {
+    public DorisWriterExcetion ( String message, Map<String, Object> response) {
         super(message);
         this.response = response;
     }
 
-    public DorisStreamLoadExcetion(String message, Map<String, Object> response, boolean reCreateLabel) {
+    public DorisWriterExcetion ( String message, Map<String, Object> response, boolean reCreateLabel) {
         super(message);
         this.response = response;
         this.reCreateLabel = reCreateLabel;

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisWriterManager.java

@@ -20,20 +20,20 @@ public class DorisWriterManager {
 
     private static final Logger LOG = LoggerFactory.getLogger(DorisWriterManager.class);
 
-    private final DorisStreamLoadVisitor visitor;
-    private final DorisWriterOptions options;
+    private final DorisStreamLoadObserver visitor;
+    private final Keys options;
     private final List<byte[]> buffer = new ArrayList<> ();
     private int batchCount = 0;
     private long batchSize = 0;
     private volatile boolean closed = false;
     private volatile Exception flushException;
-    private final LinkedBlockingDeque<DorisWriterTuple> flushQueue;
+    private final LinkedBlockingDeque< WriterTuple > flushQueue;
     private ScheduledExecutorService scheduler;
     private ScheduledFuture<?> scheduledFuture;
 
-    public DorisWriterManager(DorisWriterOptions options) {
+    public DorisWriterManager( Keys options) {
         this.options = options;
-        this.visitor = new DorisStreamLoadVisitor(options);
+        this.visitor = new DorisStreamLoadObserver (options);
         flushQueue = new LinkedBlockingDeque<>(options.getFlushQueueLength());
         this.startScheduler();
         this.startAsyncFlushing();
@@ -92,7 +92,7 @@ public class DorisWriterManager {
             }
             return;
         }
-        flushQueue.put(new DorisWriterTuple(label, batchSize,  new ArrayList<>(buffer)));
+        flushQueue.put(new WriterTuple (label, batchSize,  new ArrayList<>(buffer)));
         if (waitUtilDone) {
             // wait the last flush
             waitAsyncFlushingDone();
@@ -145,13 +145,13 @@ public class DorisWriterManager {
     private void waitAsyncFlushingDone() throws InterruptedException {
         // wait previous flushings
         for (int i = 0; i <= options.getFlushQueueLength(); i++) {
-            flushQueue.put(new DorisWriterTuple("", 0l, null));
+            flushQueue.put(new WriterTuple ("", 0l, null));
         }
         checkFlushException();
     }
 
     private void asyncFlush() throws Exception {
-        DorisWriterTuple flushData = flushQueue.take();
+        WriterTuple flushData = flushQueue.take();
         if (Strings.isNullOrEmpty(flushData.getLabel())) {
             return;
         }
@@ -169,7 +169,7 @@ public class DorisWriterManager {
                 if (i >= options.getMaxRetries()) {
                     throw new IOException(e);
                 }
-                if (e instanceof DorisStreamLoadExcetion && ((DorisStreamLoadExcetion)e).needReCreateLabel()) {
+                if (e instanceof DorisWriterExcetion && (( DorisWriterExcetion )e).needReCreateLabel()) {
                     String newLabel = createBatchLabel();
                     LOG.warn(String.format("Batch label changed from [%s] to [%s]", flushData.getLabel(), newLabel));
                     flushData.setLabel(newLabel);

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/DorisWriterOptions.java

@@ -1,174 +0,0 @@
-package com.alibaba.datax.plugin.writer.doriswriter;
-
-import com.alibaba.datax.common.exception.DataXException;
-import com.alibaba.datax.common.util.Configuration;
-import com.alibaba.datax.plugin.rdbms.util.DBUtilErrorCode;
-
-import java.io.Serializable;
-import java.util.List;
-import java.util.Map;
-import java.util.stream.Collectors;
-
-public class DorisWriterOptions implements Serializable {
-
-    private static final long serialVersionUID = 1l;
-    private static final long KILO_BYTES_SCALE = 1024l;
-    private static final long MEGA_BYTES_SCALE = KILO_BYTES_SCALE * KILO_BYTES_SCALE;
-    private static final int MAX_RETRIES = 3;
-    private static final int BATCH_ROWS = 500000;
-    private static final long BATCH_BYTES = 90 * MEGA_BYTES_SCALE;
-    private static final long FLUSH_INTERVAL = 300000;
-
-    private static final String KEY_LOAD_PROPS_FORMAT = "format";
-    public enum StreamLoadFormat {
-        CSV, JSON;
-    }
-
-    private static final String KEY_USERNAME = "username";
-    private static final String KEY_PASSWORD = "password";
-    private static final String KEY_DATABASE = "connection[0].database";
-    private static final String KEY_TABLE = "connection[0].table[0]";
-    private static final String KEY_COLUMN = "column";
-    private static final String KEY_PRE_SQL = "preSql";
-    private static final String KEY_POST_SQL = "postSql";
-    private static final String KEY_JDBC_URL = "connection[0].jdbcUrl";
-    private static final String KEY_LABEL_PREFIX = "labelPrefix";
-    private static final String KEY_MAX_BATCH_ROWS = "maxBatchRows";
-    private static final String KEY_MAX_BATCH_SIZE = "maxBatchSize";
-    private static final String KEY_FLUSH_INTERVAL = "flushInterval";
-    private static final String KEY_LOAD_URL = "loadUrl";
-    private static final String KEY_FLUSH_QUEUE_LENGTH = "flushQueueLength";
-    private static final String KEY_LOAD_PROPS = "loadProps";
-
-    private final Configuration options;
-    private List<String> infoCchemaColumns;
-    private List<String> userSetColumns;
-    private boolean isWildcardColumn;
-
-    public DorisWriterOptions(Configuration options) {
-        this.options = options;
-        this.userSetColumns = options.getList(KEY_COLUMN, String.class).stream().map(str -> str.replace("`", "")).collect(Collectors.toList());
-        if (1 == options.getList(KEY_COLUMN, String.class).size() && "*".trim().equals(options.getList(KEY_COLUMN, String.class).get(0))) {
-            this.isWildcardColumn = true;
-        }
-    }
-
-    public void doPretreatment() {
-        validateRequired();
-        validateStreamLoadUrl();
-    }
-
-    public String getJdbcUrl() {
-        return options.getString(KEY_JDBC_URL);
-    }
-
-    public String getDatabase() {
-        return options.getString(KEY_DATABASE);
-    }
-
-    public String getTable() {
-        return options.getString(KEY_TABLE);
-    }
-
-    public String getUsername() {
-        return options.getString(KEY_USERNAME);
-    }
-
-    public String getPassword() {
-        return options.getString(KEY_PASSWORD);
-    }
-
-    public String getLabelPrefix() {
-        return options.getString(KEY_LABEL_PREFIX);
-    }
-
-    public List<String> getLoadUrlList() {
-        return options.getList(KEY_LOAD_URL, String.class);
-    }
-
-    public List<String> getColumns() {
-        if (isWildcardColumn) {
-            return this.infoCchemaColumns;
-        }
-        return this.userSetColumns;
-    }
-
-    public boolean isWildcardColumn() {
-        return this.isWildcardColumn;
-    }
-
-    public void setInfoCchemaColumns(List<String> cols) {
-        this.infoCchemaColumns = cols;
-    }
-
-    public List<String> getPreSqlList() {
-        return options.getList(KEY_PRE_SQL, String.class);
-    }
-
-    public List<String> getPostSqlList() {
-        return options.getList(KEY_POST_SQL, String.class);
-    }
-
-    public Map<String, Object> getLoadProps() {
-        return options.getMap(KEY_LOAD_PROPS);
-    }
-
-    public int getMaxRetries() {
-        return MAX_RETRIES;
-    }
-
-    public int getBatchRows() {
-        Integer rows = options.getInt(KEY_MAX_BATCH_ROWS);
-        return null == rows ? BATCH_ROWS : rows;
-    }
-
-    public long getBatchSize() {
-        Long size = options.getLong(KEY_MAX_BATCH_SIZE);
-        return null == size ? BATCH_BYTES : size;
-    }
-
-    public long getFlushInterval() {
-        Long interval = options.getLong(KEY_FLUSH_INTERVAL);
-        return null == interval ? FLUSH_INTERVAL : interval;
-    }
-
-    public int getFlushQueueLength() {
-        Integer len = options.getInt(KEY_FLUSH_QUEUE_LENGTH);
-        return null == len ? 1 : len;
-    }
-
-    public StreamLoadFormat getStreamLoadFormat() {
-        Map<String, Object> loadProps = getLoadProps();
-        if (null == loadProps) {
-            return StreamLoadFormat.CSV;
-        }
-        if (loadProps.containsKey(KEY_LOAD_PROPS_FORMAT)
-                && StreamLoadFormat.JSON.name().equalsIgnoreCase(String.valueOf(loadProps.get(KEY_LOAD_PROPS_FORMAT)))) {
-            return StreamLoadFormat.JSON;
-        }
-        return StreamLoadFormat.CSV;
-    }
-
-    private void validateStreamLoadUrl() {
-        List<String> urlList = getLoadUrlList();
-        for (String host : urlList) {
-            if (host.split(":").length < 2) {
-                throw DataXException.asDataXException(DBUtilErrorCode.CONF_ERROR,
-                        "loadUrl的格式不正确，请输入 `fe_ip:fe_http_ip;fe_ip:fe_http_ip`。");
-            }
-        }
-    }
-
-    private void validateRequired() {
-        final String[] requiredOptionKeys = new String[]{
-                KEY_USERNAME,
-                KEY_DATABASE,
-                KEY_TABLE,
-                KEY_COLUMN,
-                KEY_LOAD_URL
-        };
-        for (String optionKey : requiredOptionKeys) {
-            options.getNecessaryValue(optionKey, DBUtilErrorCode.REQUIRED_VALUE);
-        }
-    }
-}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/Keys.java

@@ -0,0 +1,177 @@
+package com.alibaba.datax.plugin.writer.doriswriter;
+
+import com.alibaba.datax.common.exception.DataXException;
+import com.alibaba.datax.common.util.Configuration;
+import com.alibaba.datax.plugin.rdbms.util.DBUtilErrorCode;
+
+import java.io.Serializable;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+public class Keys implements Serializable {
+
+    private static final long serialVersionUID = 1l;
+    private static final int MAX_RETRIES = 3;
+    private static final int BATCH_ROWS = 500000;
+    private static final long DEFAULT_FLUSH_INTERVAL = 30000;
+
+    private static final String LOAD_PROPS_FORMAT = "format";
+    public enum StreamLoadFormat {
+        CSV, JSON;
+    }
+
+    private static final String USERNAME = "username";
+    private static final String PASSWORD = "password";
+    private static final String DATABASE = "connection[0].selectedDatabase";
+    private static final String TABLE = "connection[0].table[0]";
+    private static final String COLUMN = "column";
+    private static final String PRE_SQL = "preSql";
+    private static final String POST_SQL = "postSql";
+    private static final String JDBC_URL = "connection[0].jdbcUrl";
+    private static final String LABEL_PREFIX = "labelPrefix";
+    private static final String MAX_BATCH_ROWS = "maxBatchRows";
+    private static final String MAX_BATCH_SIZE = "maxBatchSize";
+    private static final String FLUSH_INTERVAL = "flushInterval";
+    private static final String LOAD_URL = "loadUrl";
+    private static final String FLUSH_QUEUE_LENGTH = "flushQueueLength";
+    private static final String LOAD_PROPS = "loadProps";
+
+    private static final String DEFAULT_LABEL_PREFIX = "datax_doris_writer_";
+
+    private static final long DEFAULT_MAX_BATCH_SIZE = 90 * 1024 * 1024; //default 90M
+
+    private final Configuration options;
+
+    private List<String> infoSchemaColumns;
+    private List<String> userSetColumns;
+    private boolean isWildcardColumn;
+
+    public Keys ( Configuration options) {
+        this.options = options;
+        this.userSetColumns = options.getList(COLUMN, String.class).stream().map(str -> str.replace("`", "")).collect(Collectors.toList());
+        if (1 == options.getList(COLUMN, String.class).size() && "*".trim().equals(options.getList(COLUMN, String.class).get(0))) {
+            this.isWildcardColumn = true;
+        }
+    }
+
+    public void doPretreatment() {
+        validateRequired();
+        validateStreamLoadUrl();
+    }
+
+    public String getJdbcUrl() {
+        return options.getString(JDBC_URL);
+    }
+
+    public String getDatabase() {
+        return options.getString(DATABASE);
+    }
+
+    public String getTable() {
+        return options.getString(TABLE);
+    }
+
+    public String getUsername() {
+        return options.getString(USERNAME);
+    }
+
+    public String getPassword() {
+        return options.getString(PASSWORD);
+    }
+
+    public String getLabelPrefix() {
+        String label = options.getString(LABEL_PREFIX);
+        return null == label ? DEFAULT_LABEL_PREFIX : label;
+    }
+
+    public List<String> getLoadUrlList() {
+        return options.getList(LOAD_URL, String.class);
+    }
+
+    public List<String> getColumns() {
+        if (isWildcardColumn) {
+            return this.infoSchemaColumns;
+        }
+        return this.userSetColumns;
+    }
+
+    public boolean isWildcardColumn() {
+        return this.isWildcardColumn;
+    }
+
+    public void setInfoCchemaColumns(List<String> cols) {
+        this.infoSchemaColumns = cols;
+    }
+
+    public List<String> getPreSqlList() {
+        return options.getList(PRE_SQL, String.class);
+    }
+
+    public List<String> getPostSqlList() {
+        return options.getList(POST_SQL, String.class);
+    }
+
+    public Map<String, Object> getLoadProps() {
+        return options.getMap(LOAD_PROPS);
+    }
+
+    public int getMaxRetries() {
+        return MAX_RETRIES;
+    }
+
+    public int getBatchRows() {
+        Integer rows = options.getInt(MAX_BATCH_ROWS);
+        return null == rows ? BATCH_ROWS : rows;
+    }
+
+    public long getBatchSize() {
+        Long size = options.getLong(MAX_BATCH_SIZE);
+        return null == size ? DEFAULT_MAX_BATCH_SIZE : size;
+    }
+
+    public long getFlushInterval() {
+        Long interval = options.getLong(FLUSH_INTERVAL);
+        return null == interval ? DEFAULT_FLUSH_INTERVAL : interval;
+    }
+
+    public int getFlushQueueLength() {
+        Integer len = options.getInt(FLUSH_QUEUE_LENGTH);
+        return null == len ? 1 : len;
+    }
+
+    public StreamLoadFormat getStreamLoadFormat() {
+        Map<String, Object> loadProps = getLoadProps();
+        if (null == loadProps) {
+            return StreamLoadFormat.CSV;
+        }
+        if (loadProps.containsKey(LOAD_PROPS_FORMAT)
+                && StreamLoadFormat.JSON.name().equalsIgnoreCase(String.valueOf(loadProps.get(LOAD_PROPS_FORMAT)))) {
+            return StreamLoadFormat.JSON;
+        }
+        return StreamLoadFormat.CSV;
+    }
+
+    private void validateStreamLoadUrl() {
+        List<String> urlList = getLoadUrlList();
+        for (String host : urlList) {
+            if (host.split(":").length < 2) {
+                throw DataXException.asDataXException(DBUtilErrorCode.CONF_ERROR,
+                        "The format of loadUrl is not correct, please enter:[`fe_ip:fe_http_ip;fe_ip:fe_http_ip`].");
+            }
+        }
+    }
+
+    private void validateRequired() {
+        final String[] requiredOptionKeys = new String[]{
+                USERNAME,
+                DATABASE,
+                TABLE,
+                COLUMN,
+                LOAD_URL
+        };
+        for (String optionKey : requiredOptionKeys) {
+            options.getNecessaryValue(optionKey, DBUtilErrorCode.REQUIRED_VALUE);
+        }
+    }
+}

doriswriter/src/main/java/com/alibaba/datax/plugin/writer/doriswriter/WriterTuple.java

@@ -2,12 +2,12 @@ package com.alibaba.datax.plugin.writer.doriswriter;
 
 import java.util.List;
 
-public class DorisWriterTuple {
+public class WriterTuple {
     private String label;
     private Long bytes;
     private List<byte[]> rows;
 
-    public DorisWriterTuple(String label,Long bytes,List<byte[]> rows){
+    public WriterTuple ( String label, Long bytes, List<byte[]> rows){
         this.label = label;
         this.rows = rows;
         this.bytes = bytes;