[Feature][Connector-V2] Add mongodb connecter source (apache#2596)

* Add mongodb connecter v2 source

* Add docs

* Add license header

* Add mongodb e2e

* Add license header

* Add codestyle

* change config file

* Resolve conflicts

* Add mongodb connecter v2 source

* fix

* fix

* fix

* fix

* fix

* fix

* Fix codestyle

docs/en/connector-v2/source/MongoDB.md

@@ -0,0 +1,76 @@
+# MongoDb
+
+> MongoDb source connector
+
+## Description
+
+Read data from MongoDB.
+
+## Key features
+
+- [x] [batch](../../concept/connector-v2-features.md)
+- [ ] [stream](../../concept/connector-v2-features.md)
+- [ ] [exactly-once](../../concept/connector-v2-features.md)
+- [x] [schema projection](../../concept/connector-v2-features.md)
+- [ ] [parallelism](../../concept/connector-v2-features.md)
+- [ ] [support user-defined split](../../concept/connector-v2-features.md)
+
+## Options
+
+| name           | type   | required | default value |
+|----------------|--------|----------|---------------|
+| uri            | string | yes      | -             |
+| database       | string | yes      | -             |
+| collection     | string | yes      | -             |
+| schema         | object | yes      | -             |
+| common-options | string | yes      | -             |
+
+### uri [string]
+
+MongoDB uri
+
+### database [string]
+
+MongoDB database
+
+### collection [string]
+
+MongoDB collection
+
+### schema [object]
+
+Because `MongoDB` does not have the concept of `schema`, when engine reads `MongoDB` , it will sample `MongoDB` data and infer the `schema` . In fact, this process will be slow and may be inaccurate. This parameter can be manually specified. Avoid these problems. 
+
+such as:
+
+```
+schema {
+  fields {
+    id = int
+    key_aa = string
+    key_bb = string
+  }
+}
+```
+
+### common options [string]
+
+Source Plugin common parameters, refer to [Source Plugin](common-options.md) for details
+
+## Example
+
+```bash
+mongodb {
+    uri = "mongodb://username:password@127.0.0.1:27017/mypost?retryWrites=true&writeConcern=majority"
+    database = "mydatabase"
+    collection = "mycollection"
+    schema {
+      fields {
+        id = int
+        key_aa = string
+        key_bb = string
+      }
+    }
+    result_table_name = "mongodb_result_table"
+}
+```

plugin-mapping.properties

@@ -126,3 +126,5 @@ seatunnel.source.Redis = connector-redis
 seatunnel.sink.Redis = connector-redis
 seatunnel.sink.DataHub = connector-datahub
 seatunnel.sink.Sentry = connector-sentry
+seatunnel.source.MongoDB = connector-mongodb
+

pom.xml

@@ -256,7 +256,7 @@
                 <artifactId>commons-collections4</artifactId>
                 <version>${commons-collections4.version}</version>
             </dependency>
-            
+
             <dependency>
                 <groupId>com.beust</groupId>
                 <artifactId>jcommander</artifactId>
@@ -344,7 +344,7 @@
                 <artifactId>slf4j-log4j12</artifactId>
                 <version>${slf4j.version}</version>
             </dependency>
-            
+
             <dependency>
                 <groupId>commons-logging</groupId>
                 <artifactId>commons-logging</artifactId>

seatunnel-connectors-v2-dist/pom.xml

@@ -161,6 +161,11 @@
             <artifactId>connector-sentry</artifactId>
             <version>${project.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.seatunnel</groupId>
+            <artifactId>connector-mongodb</artifactId>
+            <version>${project.version}</version>
+        </dependency>
     </dependencies>
 
     <build>

seatunnel-connectors-v2/connector-mongodb/pom.xml

@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    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.
+
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.seatunnel</groupId>
+        <artifactId>seatunnel-connectors-v2</artifactId>
+        <version>${revision}</version>
+    </parent>
+
+    <artifactId>connector-mongodb</artifactId>
+
+    <properties>
+        <mongodb.version>3.12.11</mongodb.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.seatunnel</groupId>
+            <artifactId>connector-common</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.seatunnel</groupId>
+            <artifactId>seatunnel-format-json</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.seatunnel</groupId>
+            <artifactId>seatunnel-api</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.mongodb</groupId>
+            <artifactId>mongodb-driver</artifactId>
+            <version>${mongodb.version}</version>
+        </dependency>
+    </dependencies>
+</project>

seatunnel-connectors-v2/connector-mongodb/src/main/java/org/apache/seatunnel/connectors/seatunnel/mongodb/config/MongodbConfig.java

@@ -0,0 +1,39 @@
+/*
+ * 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.mongodb.config;
+
+import java.io.Serializable;
+
+/**
+ * The config of mongodb
+ */
+public class MongodbConfig implements Serializable {
+
+    public static final String URI = "uri";
+
+    public static final String DATABASE = "database";
+
+    public static final String COLLECTION = "collection";
+
+    public static final String SCHEMA = "schema";
+
+    public static final String FORMAT = "format";
+
+    public static final String DEFAULT_FORMAT = "json";
+
+}

seatunnel-connectors-v2/connector-mongodb/src/main/java/org/apache/seatunnel/connectors/seatunnel/mongodb/config/MongodbParameters.java

@@ -0,0 +1,33 @@
+/*
+ * 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.mongodb.config;
+
+import lombok.Data;
+
+import java.io.Serializable;
+
+@Data
+public class MongodbParameters implements Serializable {
+
+    private String uri;
+
+    private String database;
+
+    private String collection;
+
+}

seatunnel-connectors-v2/connector-mongodb/src/main/java/org/apache/seatunnel/connectors/seatunnel/mongodb/source/MongodbSource.java

@@ -0,0 +1,114 @@
+/*
+ * 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.mongodb.source;
+
+import static org.apache.seatunnel.connectors.seatunnel.mongodb.config.MongodbConfig.COLLECTION;
+import static org.apache.seatunnel.connectors.seatunnel.mongodb.config.MongodbConfig.DATABASE;
+import static org.apache.seatunnel.connectors.seatunnel.mongodb.config.MongodbConfig.DEFAULT_FORMAT;
+import static org.apache.seatunnel.connectors.seatunnel.mongodb.config.MongodbConfig.FORMAT;
+import static org.apache.seatunnel.connectors.seatunnel.mongodb.config.MongodbConfig.SCHEMA;
+import static org.apache.seatunnel.connectors.seatunnel.mongodb.config.MongodbConfig.URI;
+
+import org.apache.seatunnel.api.common.PrepareFailException;
+import org.apache.seatunnel.api.common.SeaTunnelContext;
+import org.apache.seatunnel.api.serialization.DeserializationSchema;
+import org.apache.seatunnel.api.source.Boundedness;
+import org.apache.seatunnel.api.source.SeaTunnelSource;
+import org.apache.seatunnel.api.table.type.SeaTunnelDataType;
+import org.apache.seatunnel.api.table.type.SeaTunnelRow;
+import org.apache.seatunnel.api.table.type.SeaTunnelRowType;
+import org.apache.seatunnel.common.config.CheckConfigUtil;
+import org.apache.seatunnel.common.config.CheckResult;
+import org.apache.seatunnel.common.constants.PluginType;
+import org.apache.seatunnel.connectors.seatunnel.common.schema.SeaTunnelSchema;
+import org.apache.seatunnel.connectors.seatunnel.common.source.AbstractSingleSplitReader;
+import org.apache.seatunnel.connectors.seatunnel.common.source.AbstractSingleSplitSource;
+import org.apache.seatunnel.connectors.seatunnel.common.source.SingleSplitReaderContext;
+import org.apache.seatunnel.connectors.seatunnel.mongodb.config.MongodbParameters;
+import org.apache.seatunnel.format.json.JsonDeserializationSchema;
+
+import org.apache.seatunnel.shade.com.typesafe.config.Config;
+import org.apache.seatunnel.shade.com.typesafe.config.ConfigBeanFactory;
+
+import com.google.auto.service.AutoService;
+
+@AutoService(SeaTunnelSource.class)
+public class MongodbSource extends AbstractSingleSplitSource<SeaTunnelRow> {
+
+    private SeaTunnelContext seaTunnelContext;
+
+    private SeaTunnelRowType rowType;
+
+    private MongodbParameters params;
+
+    private DeserializationSchema<SeaTunnelRow> deserializationSchema;
+
+    @Override
+    public String getPluginName() {
+        return "MongoDB";
+    }
+
+    @Override
+    public void prepare(Config config) throws PrepareFailException {
+        CheckResult result = CheckConfigUtil.checkAllExists(config, URI, DATABASE, COLLECTION);
+        if (!result.isSuccess()) {
+            throw new PrepareFailException(getPluginName(), PluginType.SOURCE, result.getMsg());
+        }
+
+        this.params = ConfigBeanFactory.create(config, MongodbParameters.class);
+
+        if (config.hasPath(SCHEMA)) {
+            Config schema = config.getConfig(SCHEMA);
+            this.rowType = SeaTunnelSchema.buildWithConfig(schema).getSeaTunnelRowType();
+        } else {
+            this.rowType = SeaTunnelSchema.buildSimpleTextSchema();
+        }
+
+        // TODO: use format SPI
+        // default use json format
+        String format;
+        if (config.hasPath(FORMAT)) {
+            format = config.getString(FORMAT);
+            this.deserializationSchema = null;
+        } else {
+            format = DEFAULT_FORMAT;
+            this.deserializationSchema = new JsonDeserializationSchema(false, false, rowType);
+        }
+    }
+
+    @Override
+    public void setSeaTunnelContext(SeaTunnelContext seaTunnelContext) {
+        this.seaTunnelContext = seaTunnelContext;
+    }
+
+    @Override
+    public Boundedness getBoundedness() {
+        return Boundedness.BOUNDED;
+    }
+
+    @Override
+    public SeaTunnelDataType<SeaTunnelRow> getProducedType() {
+        return this.rowType;
+    }
+
+    @Override
+    public AbstractSingleSplitReader<SeaTunnelRow> createReader(SingleSplitReaderContext context) throws Exception {
+        return new MongodbSourceReader(context, this.params, this.deserializationSchema);
+    }
+
+}