EricJoy2048 commented on code in PR #2467:
URL: 
https://github.com/apache/incubator-seatunnel/pull/2467#discussion_r949756944


##########
seatunnel-connectors-v2/connector-file/connector-file-oss/src/main/java/org/apache/seatunnel/connectors/seatunnel/file/oss/fs/OSSFileSystem.java:
##########
@@ -0,0 +1,997 @@
+/*
+ * 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.seatunnel.connectors.seatunnel.file.oss.fs;
+
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_CORE_POOL_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_ESTABLISH_TIMEOUT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_KEEP_ALIVE_TIME;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MAXIMUM_CONNECTIONS;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MAX_ERROR_RETRIES;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MAX_POOL_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MINIMUM_COPY_PART_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MINIMUM_UPLOAD_PART_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MULTIPART_COPY_THRESHOLD;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MULTIPART_UPLOAD_THRESHOLD;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_SECURE_CONNECTIONS;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_SOCKET_TIMEOUT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_USER_AGENT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DELETE_OBJECTS_ONETIME_LIMIT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_CORE_POOL_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_ESTABLISH_TIMEOUT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_KEEP_ALIVE_TIME;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MAXIMUM_CONNECTIONS;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MAX_ERROR_RETRIES;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MAX_POOL_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MULTIPART_COPY_PART_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MULTIPART_COPY_THRESHOLD;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MULTIPART_UPLOAD_PART_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MULTIPART_UPLOAD_THRESHOLD;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_PROXY_DOMAIN;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_PROXY_HOST;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_PROXY_PASSWORD;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_PROXY_PORT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_PROXY_USERNAME;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_PROXY_WORKSTATION;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_SECURE_CONNECTIONS;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_SOCKET_TIMEOUT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.MAX_RETURNED_KEYS_LIMIT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.OSS_DEFAULT_BLOCK_SIZE;
+
+import com.aliyun.oss.ClientException;
+import com.aliyun.oss.OSSClient;
+import com.aliyun.oss.OSSErrorCode;
+import com.aliyun.oss.OSSException;
+import com.aliyun.oss.common.comm.Protocol;
+import com.aliyun.oss.event.ProgressEvent;
+import com.aliyun.oss.event.ProgressListener;
+import com.aliyun.oss.model.CopyObjectRequest;
+import com.aliyun.oss.model.DeleteObjectsRequest;
+import com.aliyun.oss.model.ListObjectsRequest;
+import com.aliyun.oss.model.OSSObjectSummary;
+import com.aliyun.oss.model.ObjectListing;
+import com.aliyun.oss.model.ObjectMetadata;
+import com.aliyun.oss.model.PutObjectRequest;
+import org.apache.hadoop.classification.InterfaceAudience;
+import org.apache.hadoop.classification.InterfaceStability;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FSDataInputStream;
+import org.apache.hadoop.fs.FSDataOutputStream;
+import org.apache.hadoop.fs.FileAlreadyExistsException;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.LocalFileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.permission.FsPermission;
+import org.apache.hadoop.util.Progressable;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+
+/**
+ * Hadoop File System implementation for Aliyun OSS.
+ */
[email protected]
[email protected]
+public class OSSFileSystem extends FileSystem {
+
+    private URI uri;
+    private Path workingDir;
+    private String bucket;
+    private OSSClient client;
+
+    public static final Logger LOG = 
LoggerFactory.getLogger(OSSFileSystem.class);
+
+    /**
+     * Called after a new FileSystem instance is constructed.
+     *
+     * @param name URI
+     * @param conf configuration
+     * @throws IOException IOException
+     */
+    public void initialize(URI name, Configuration conf) throws IOException {

Review Comment:
   Please use `@Nonnull` mark the parameter if it can not be null.



##########
seatunnel-connectors-v2/connector-file/connector-file-oss/src/main/java/org/apache/seatunnel/connectors/seatunnel/file/oss/fs/OSSFileSystem.java:
##########
@@ -0,0 +1,997 @@
+/*
+ * 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.seatunnel.connectors.seatunnel.file.oss.fs;
+
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_CORE_POOL_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_ESTABLISH_TIMEOUT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_KEEP_ALIVE_TIME;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MAXIMUM_CONNECTIONS;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MAX_ERROR_RETRIES;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MAX_POOL_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MINIMUM_COPY_PART_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MINIMUM_UPLOAD_PART_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MULTIPART_COPY_THRESHOLD;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_MULTIPART_UPLOAD_THRESHOLD;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_SECURE_CONNECTIONS;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_SOCKET_TIMEOUT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DEFAULT_USER_AGENT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.DELETE_OBJECTS_ONETIME_LIMIT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_CORE_POOL_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_ESTABLISH_TIMEOUT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_KEEP_ALIVE_TIME;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MAXIMUM_CONNECTIONS;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MAX_ERROR_RETRIES;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MAX_POOL_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MULTIPART_COPY_PART_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MULTIPART_COPY_THRESHOLD;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MULTIPART_UPLOAD_PART_SIZE;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_MULTIPART_UPLOAD_THRESHOLD;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_PROXY_DOMAIN;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_PROXY_HOST;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_PROXY_PASSWORD;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_PROXY_PORT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_PROXY_USERNAME;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_PROXY_WORKSTATION;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_SECURE_CONNECTIONS;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.HADOOP_SOCKET_TIMEOUT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.MAX_RETURNED_KEYS_LIMIT;
+import static 
org.apache.seatunnel.connectors.seatunnel.file.oss.fs.SmartOSSClientConfig.OSS_DEFAULT_BLOCK_SIZE;
+
+import com.aliyun.oss.ClientException;
+import com.aliyun.oss.OSSClient;
+import com.aliyun.oss.OSSErrorCode;
+import com.aliyun.oss.OSSException;
+import com.aliyun.oss.common.comm.Protocol;
+import com.aliyun.oss.event.ProgressEvent;
+import com.aliyun.oss.event.ProgressListener;
+import com.aliyun.oss.model.CopyObjectRequest;
+import com.aliyun.oss.model.DeleteObjectsRequest;
+import com.aliyun.oss.model.ListObjectsRequest;
+import com.aliyun.oss.model.OSSObjectSummary;
+import com.aliyun.oss.model.ObjectListing;
+import com.aliyun.oss.model.ObjectMetadata;
+import com.aliyun.oss.model.PutObjectRequest;
+import org.apache.hadoop.classification.InterfaceAudience;
+import org.apache.hadoop.classification.InterfaceStability;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FSDataInputStream;
+import org.apache.hadoop.fs.FSDataOutputStream;
+import org.apache.hadoop.fs.FileAlreadyExistsException;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.LocalFileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.fs.permission.FsPermission;
+import org.apache.hadoop.util.Progressable;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+
+/**
+ * Hadoop File System implementation for Aliyun OSS.
+ */
[email protected]
[email protected]
+public class OSSFileSystem extends FileSystem {
+
+    private URI uri;
+    private Path workingDir;
+    private String bucket;
+    private OSSClient client;
+
+    public static final Logger LOG = 
LoggerFactory.getLogger(OSSFileSystem.class);
+
+    /**
+     * Called after a new FileSystem instance is constructed.
+     *
+     * @param name URI
+     * @param conf configuration
+     * @throws IOException IOException
+     */
+    public void initialize(URI name, Configuration conf) throws IOException {
+        super.initialize(name, conf);
+
+        uri = URI.create(name.getScheme() + "://" + name.getAuthority());
+        workingDir = new Path("/user", 
System.getProperty("user.name")).makeQualified(this.uri,
+                this.getWorkingDirectory());
+
+        // Try to get our credentials or just connect anonymously
+        String accessKeyId = conf.get(SmartOSSClientConfig.HADOOP_ACCESS_KEY, 
null);
+        String accessKeySecret = 
conf.get(SmartOSSClientConfig.HADOOP_SECRET_KEY, null);
+        String endpoint = conf.get(SmartOSSClientConfig.HADOOP_ENDPOINT, null);
+
+        bucket = name.getHost();
+
+        // Initialize OSS Client, please refer to 
help.aliyun.com/document_detail/oss/sdk/java-sdk/init.html
+        // for the detailed information.
+        SmartOSSClientConfig ossConf = new SmartOSSClientConfig();
+        //user agent
+        ossConf.setUserAgent(conf.getTrimmed(HADOOP_PROXY_HOST, 
DEFAULT_USER_AGENT));
+        //connect to oss through a proxy server
+        String proxyHost = conf.getTrimmed(HADOOP_PROXY_HOST, "");
+        int proxyPort = conf.getInt(HADOOP_PROXY_PORT, -1);
+        String proxyUsername = conf.getTrimmed(HADOOP_PROXY_USERNAME);
+        String proxyPassword = conf.getTrimmed(HADOOP_PROXY_PASSWORD);
+        if (!proxyHost.isEmpty() && proxyPort >= 0) {
+            ossConf.setProxyHost(proxyHost);
+            ossConf.setProxyPort(proxyPort);
+        }
+        if (proxyUsername != null) {
+            ossConf.setProxyUsername(proxyUsername);
+        }
+        if (proxyPassword != null) {
+            ossConf.setProxyPassword(proxyPassword);
+        }
+        ossConf.setProxyDomain(conf.getTrimmed(HADOOP_PROXY_DOMAIN));
+        ossConf.setProxyWorkstation(conf.getTrimmed(HADOOP_PROXY_WORKSTATION));
+        //MaxConnections
+        ossConf.setMaxConnections(conf.getInt(HADOOP_MAXIMUM_CONNECTIONS, 
DEFAULT_MAXIMUM_CONNECTIONS));
+        //SocketTimeout
+        ossConf.setSocketTimeout(conf.getInt(HADOOP_SOCKET_TIMEOUT, 
DEFAULT_SOCKET_TIMEOUT));
+        //ConnectionTimeout
+        ossConf.setConnectionTimeout(conf.getInt(HADOOP_ESTABLISH_TIMEOUT, 
DEFAULT_ESTABLISH_TIMEOUT));
+        //MaxErrorRetry
+        ossConf.setMaxErrorRetry(conf.getInt(HADOOP_MAX_ERROR_RETRIES, 
DEFAULT_MAX_ERROR_RETRIES));
+        //Protocol
+        boolean secureConnections = conf.getBoolean(HADOOP_SECURE_CONNECTIONS, 
DEFAULT_SECURE_CONNECTIONS);
+        ossConf.setProtocol(secureConnections ? Protocol.HTTPS : 
Protocol.HTTP);
+        //SupportCname
+        ossConf.setSupportCname(false);  //ListBuckets can not be used when 
enable CNAME.
+        ossConf.setSLDEnabled(false);
+
+        //extra configuration for multiple part copy/upload
+        
ossConf.setMultipartUploadThreshold(conf.getLong(HADOOP_MULTIPART_UPLOAD_THRESHOLD,
 DEFAULT_MULTIPART_UPLOAD_THRESHOLD));
+        
ossConf.setMinimumUploadPartSize(conf.getLong(HADOOP_MULTIPART_UPLOAD_PART_SIZE,
 DEFAULT_MINIMUM_UPLOAD_PART_SIZE));
+        
ossConf.setMultipartCopyThreshold(conf.getLong(HADOOP_MULTIPART_COPY_THRESHOLD, 
DEFAULT_MULTIPART_COPY_THRESHOLD));
+        
ossConf.setMultipartCopyPartSize(conf.getLong(HADOOP_MULTIPART_COPY_PART_SIZE, 
DEFAULT_MINIMUM_COPY_PART_SIZE));
+        // extra configuration for multiple part copy/upload thread pool
+        ossConf.setCorePoolSize(conf.getInt(HADOOP_CORE_POOL_SIZE, 
DEFAULT_CORE_POOL_SIZE));
+        ossConf.setMaxPoolSize(conf.getInt(HADOOP_MAX_POOL_SIZE, 
DEFAULT_MAX_POOL_SIZE));
+        ossConf.setKeepAliveTime(conf.getInt(HADOOP_KEEP_ALIVE_TIME, 
DEFAULT_KEEP_ALIVE_TIME));
+
+        if (LOG.isDebugEnabled()) {
+            LOG.debug("Using proxy server {}:{} as user {} with password {} on 
" +
+                            "domain {} as workstation {}", 
ossConf.getProxyHost(),
+                    ossConf.getProxyPort(), ossConf.getProxyUsername(),
+                    ossConf.getProxyPassword(), ossConf.getProxyDomain(),
+                    ossConf.getProxyWorkstation());
+        }
+
+        client = new SmartOSSClient(endpoint, accessKeyId, accessKeySecret, 
ossConf);
+        if (!client.doesBucketExist(bucket)) {
+            throw new IOException("Bucket " + bucket + " does not exist");
+        }
+        setConf(conf);
+
+    }
+
+    /**
+     * Return the protocol scheme for the FileSystem.
+     *
+     * @return "oss"
+     */
+    public String getScheme() {
+        return "oss";
+    }
+
+    /**
+     * Returns a URI whose scheme and authority identify this FileSystem.
+     */
+    public URI getUri() {
+        return uri;
+    }
+
+    /**
+     * Returns the OSS client used by this filesystem.
+     *
+     * @return oss client
+     */
+    OSSClient getOSSClient() {
+        return client;
+    }
+
+    public OSSFileSystem() {
+        super();
+    }
+
+    /**
+     * Turns a path (relative or otherwise) into an OSS key
+     *
+     * @param path path
+     * @return the Path object
+     */
+    private String pathToKey(Path path) {

Review Comment:
   As above



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