* [feature][connector-file] GAL-572 支持FileSource

12 files changed, 567 insertions, 0 deletions

diff --git a/docs/connector/source/file.md b/docs/connector/source/file.md
new file mode 100644
index 0000000..f92ab84
--- /dev/null
+++ b/docs/connector/source/file.md
@@ -0,0 +1,56 @@
+# File
+
+> File source connector
+
+## Description
+
+File source connector is used to generate data from a text file(local file or hdfs file). It is useful for testing.
+
+## Source Options
+
+File source custom properties.
+
+| Name                      | Type    | Required | Default | Description                                                                                       |
+|---------------------------|---------|----------|---------|---------------------------------------------------------------------------------------------------|
+| path                      | String  | Yes      | (none)  | File path, support local path or hdfs path. Example: ./logs/logs.json, hdfs://ns1/test/logs.json. |
+| format                    | String  | Yes      | (none)  | Data format.  The Optional values are `json`, `csv`.                                              |
+| [format].config           | Map     | No       | (none)  | Data format properties. Please refer to [Format Options](../formats) for details.                 |
+| rows.per.second           | Integer | No       | 1000    | Rows per second to control the emit rate.                                                         |
+| number.of.rows            | Long    | No       | -1      | Total number of rows to emit. By default, the source is unbounded.                                |
+| millis.per.row            | Long    | No       | 0       | Millis per row to control the emit rate.  If greater than 0, rows.per.second is not effective.    |
+| read.local.file.in.client | Boolean | No       | true    | Whether read local file in client.                                                                |
+
+## Example
+
+This example read data of file test source and print to console.
+
+```yaml
+sources:
+  file_source:
+    type: file
+    properties:
+      # path: 'hdfs://ns1/test/logs.json'
+      path: './logs.json'
+      rows.per.second: 2
+      format: json
+
+sinks:
+  print_sink:
+    type: print
+    properties:
+      format: json
+
+application:
+  env:
+    name: example-file-to-print
+    parallelism: 2
+    pipeline:
+      object-reuse: true
+  topology:
+    - name: file_source
+      downstream: [ print_sink ]
+    - name: print_sink
+      downstream: [ ]
+```
+
+
diff --git a/groot-bootstrap/pom.xml b/groot-bootstrap/pom.xml
index 9f67699..2a3605e 100644
--- a/groot-bootstrap/pom.xml
+++ b/groot-bootstrap/pom.xml
@@ -50,6 +50,12 @@
             <scope>${scope}</scope>
         </dependency>
 
+        <dependency>
+            <groupId>com.geedgenetworks</groupId>
+            <artifactId>connector-file</artifactId>
+            <version>${revision}</version>
+            <scope>${scope}</scope>
+        </dependency>
 
         <dependency>
             <groupId>com.geedgenetworks</groupId>
diff --git a/groot-connectors/connector-file/pom.xml b/groot-connectors/connector-file/pom.xml
new file mode 100644
index 0000000..b888d36
--- /dev/null
+++ b/groot-connectors/connector-file/pom.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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>com.geedgenetworks</groupId>
+        <artifactId>groot-connectors</artifactId>
+        <version>${revision}</version>
+    </parent>
+
+    <artifactId>connector-file</artifactId>
+    <name>Groot : Connectors : File </name>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.flink</groupId>
+            <artifactId>flink-shaded-hadoop-2-uber</artifactId>
+            <version>2.7.5-8.0</version>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+
+</project>
\ No newline at end of file
diff --git a/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/FileConnectorOptions.java b/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/FileConnectorOptions.java
new file mode 100644
index 0000000..6870d1b
--- /dev/null
+++ b/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/FileConnectorOptions.java
@@ -0,0 +1,37 @@
+package com.geedgenetworks.connectors.file;

+

+import org.apache.flink.configuration.ConfigOption;

+import org.apache.flink.configuration.ConfigOptions;

+

+public class FileConnectorOptions {

+    public static final ConfigOption<String> PATH =

+            ConfigOptions.key("path")

+                    .stringType()

+                    .noDefaultValue()

+                    .withDescription("file path");

+

+    public static final ConfigOption<Integer> ROWS_PER_SECOND =

+            ConfigOptions.key("rows.per.second")

+                    .intType()

+                    .defaultValue(1000)

+                    .withDescription("Rows per second to control the emit rate.");

+

+    public static final ConfigOption<Long> NUMBER_OF_ROWS =

+            ConfigOptions.key("number.of.rows")

+                    .longType()

+                    .defaultValue(-1L)

+                    .withDescription("Total number of rows to emit. By default, the source is unbounded.");

+

+    public static final ConfigOption<Long> MILLIS_PER_ROW =

+            ConfigOptions.key("millis.per.row")

+                    .longType()

+                    .defaultValue(0L)

+                    .withDescription("millis per row to control the emit rate.");

+

+    public static final ConfigOption<Boolean> READ_LOCAL_FILE_IN_CLIENT =

+            ConfigOptions.key("read.local.file.in.client")

+                    .booleanType()

+                    .defaultValue(true)

+                    .withDescription("Whether read local file in client.");

+

+}

diff --git a/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/FileSourceProvider.java b/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/FileSourceProvider.java
new file mode 100644
index 0000000..28cf68a
--- /dev/null
+++ b/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/FileSourceProvider.java
@@ -0,0 +1,94 @@
+package com.geedgenetworks.connectors.file;

+

+import com.geedgenetworks.common.Event;

+import com.geedgenetworks.core.connector.source.SourceProvider;

+import com.geedgenetworks.core.types.StructType;

+import org.apache.commons.io.IOUtils;

+import org.apache.commons.io.LineIterator;

+import org.apache.flink.api.common.serialization.DeserializationSchema;

+import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;

+import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;

+import org.apache.flink.streaming.api.functions.source.SourceFunction;

+

+import java.io.*;

+import java.nio.charset.StandardCharsets;

+

+public class FileSourceProvider implements SourceProvider {

+    private final StructType physicalDataType;

+    private final DeserializationSchema<Event> deserialization;

+

+    private final String path;

+    private final boolean readLocalFileInClient;

+    private final int rowsPerSecond;

+    private final long numberOfRows;

+    private final long millisPerRow;

+

+    public FileSourceProvider(StructType physicalDataType, DeserializationSchema<Event> deserialization, String path, boolean readLocalFileInClient, int rowsPerSecond, long numberOfRows, long millisPerRow) {

+        this.physicalDataType = physicalDataType;

+        this.deserialization = deserialization;

+        this.path = path;

+        this.readLocalFileInClient = readLocalFileInClient;

+        this.rowsPerSecond = rowsPerSecond;

+        this.numberOfRows = numberOfRows;

+        this.millisPerRow = millisPerRow;

+    }

+

+    @Override

+    public SingleOutputStreamOperator<Event> produceDataStream(StreamExecutionEnvironment env) {

+        boolean isLocalPath = !path.startsWith("hdfs://");

+

+        SourceFunction<Event> sourceFunction = null;

+        if (isLocalPath) {

+            if (readLocalFileInClient) {

+                byte[] lineBytes = getLocalTextFileLineBytes(path);

+                sourceFunction = new MemoryTextFileSource(deserialization, lineBytes, rowsPerSecond, numberOfRows, millisPerRow);

+            } else {

+                sourceFunction = new LocalTextFileSource(deserialization, path, rowsPerSecond, numberOfRows, millisPerRow);

+            }

+        } else {

+            sourceFunction = new HdfsTextFileSource(deserialization, path, rowsPerSecond, numberOfRows, millisPerRow);

+        }

+

+        return env.addSource(sourceFunction);

+    }

+

+    @Override

+    public StructType getPhysicalDataType() {

+        return physicalDataType;

+    }

+

+    private byte[] getLocalTextFileLineBytes(String path) {

+        try {

+            File file = new File(path);

+            long fileLength = file.length();

+            if(fileLength > (1 << 20) * 128){

+                throw new IllegalArgumentException(String.format("file:%s size is bigger than 128MB"));

+            }

+

+            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();

+            byte[] intBytes = new byte[4];

+            byte[] bytes;

+            try(InputStream inputStream = new FileInputStream(file)){

+                LineIterator lines = IOUtils.lineIterator(inputStream, "utf-8");

+                while (lines.hasNext()) {

+                    String line = lines.next().trim();

+                    if(line.isEmpty()){

+                        continue;

+                    }

+                    bytes = line.getBytes(StandardCharsets.UTF_8);

+                    intBytes[0] = (byte) (bytes.length >> 24);

+                    intBytes[1] = (byte) (bytes.length >> 16);

+                    intBytes[2] = (byte) (bytes.length >> 8);

+                    intBytes[3] = (byte) bytes.length;

+                    outputStream.write(intBytes);

+                    outputStream.write(bytes);

+                }

+            }

+

+            return outputStream.toByteArray();

+        } catch (IOException e) {

+            throw new RuntimeException(e);

+        }

+    }

+

+}

diff --git a/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/FileTableFactory.java b/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/FileTableFactory.java
new file mode 100644
index 0000000..5e1bde5
--- /dev/null
+++ b/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/FileTableFactory.java
@@ -0,0 +1,60 @@
+package com.geedgenetworks.connectors.file;

+

+import com.geedgenetworks.core.connector.format.DecodingFormat;

+import com.geedgenetworks.core.connector.source.SourceProvider;

+import com.geedgenetworks.core.factories.DecodingFormatFactory;

+import com.geedgenetworks.core.factories.FactoryUtil;

+import com.geedgenetworks.core.factories.SourceTableFactory;

+import com.geedgenetworks.core.types.StructType;

+import org.apache.flink.configuration.ConfigOption;

+import org.apache.flink.configuration.ReadableConfig;

+

+import java.util.HashSet;

+import java.util.Set;

+

+import static com.geedgenetworks.connectors.file.FileConnectorOptions.*;

+

+public class FileTableFactory implements SourceTableFactory {

+    public static final String IDENTIFIER = "file";

+

+    @Override

+    public String factoryIdentifier() {

+        return IDENTIFIER;

+    }

+

+    @Override

+    public SourceProvider getSourceProvider(Context context) {

+        final FactoryUtil.TableFactoryHelper helper = FactoryUtil.createTableFactoryHelper(this, context);

+        DecodingFormat decodingFormat = helper.discoverDecodingFormat(DecodingFormatFactory.class, FactoryUtil.FORMAT);

+        helper.validate();

+

+        StructType physicalDataType = context.getPhysicalDataType();

+        ReadableConfig config = context.getConfiguration();

+

+        String path = config.get(PATH).trim();

+        boolean readLocalFileInClient = config.get(READ_LOCAL_FILE_IN_CLIENT);

+        int rowsPerSecond = config.get(ROWS_PER_SECOND);

+        long numberOfRows = config.get(NUMBER_OF_ROWS);

+        long millisPerRow = config.get(MILLIS_PER_ROW);

+

+        return new FileSourceProvider(physicalDataType, decodingFormat.createRuntimeDecoder(physicalDataType), path, readLocalFileInClient, rowsPerSecond, numberOfRows, millisPerRow);

+    }

+

+    @Override

+    public Set<ConfigOption<?>> requiredOptions() {

+        Set<ConfigOption<?>> options = new HashSet<>();

+        options.add(PATH);

+        options.add(FactoryUtil.FORMAT);

+        return options;

+    }

+

+    @Override

+    public Set<ConfigOption<?>> optionalOptions() {

+        Set<ConfigOption<?>> options = new HashSet<>();

+        options.add(ROWS_PER_SECOND);

+        options.add(NUMBER_OF_ROWS);

+        options.add(MILLIS_PER_ROW);

+        options.add(READ_LOCAL_FILE_IN_CLIENT);

+        return options;

+    }

+}

diff --git a/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/HdfsTextFileSource.java b/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/HdfsTextFileSource.java
new file mode 100644
index 0000000..8bb6430
--- /dev/null
+++ b/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/HdfsTextFileSource.java
@@ -0,0 +1,102 @@
+package com.geedgenetworks.connectors.file;

+

+import com.geedgenetworks.common.Event;

+import org.apache.commons.io.IOUtils;

+import org.apache.commons.io.LineIterator;

+import org.apache.flink.api.common.serialization.DeserializationSchema;

+import org.apache.flink.configuration.Configuration;

+import org.apache.flink.streaming.api.functions.source.RichParallelSourceFunction;

+import org.apache.flink.util.Preconditions;

+import org.apache.hadoop.fs.FileSystem;

+import org.apache.hadoop.fs.Path;

+

+import java.io.InputStream;

+import java.nio.charset.StandardCharsets;

+

+public class HdfsTextFileSource extends RichParallelSourceFunction<Event> {

+    private final DeserializationSchema<Event> deserialization;

+    private final String path;

+    private final int rowsPerSecond;

+    private final long numberOfRows;

+    private final long millisPerRow;

+    private transient FileSystem fs;

+    private volatile boolean stop;

+

+    protected HdfsTextFileSource(DeserializationSchema<Event> deserialization, String path, int rowsPerSecond, long numberOfRows, long millisPerRow) {

+        this.deserialization = deserialization;

+        this.path = path;

+        this.rowsPerSecond = rowsPerSecond;

+        this.numberOfRows = numberOfRows;

+        this.millisPerRow = millisPerRow;

+    }

+

+    @Override

+    public void open(Configuration parameters) throws Exception {

+        fs = new Path(path).getFileSystem(new org.apache.hadoop.conf.Configuration());

+        Preconditions.checkArgument(fs.isFile(new Path(path)), "%s is not file", path);

+    }

+

+    @Override

+    public void run(SourceContext<Event> ctx) throws Exception {

+        final long rowsForSubtask = getRowsForSubTask();

+        final long rowsPerSecondForSubtask = getRowsPerSecondForSubTask();

+

+        long rows = 0;

+        int batchRows = 0;

+        byte[] bytes;

+        long batchStartTs = System.currentTimeMillis();

+        long batchWait;

+

+        while (!stop && rows < rowsForSubtask) {

+            try(InputStream inputStream = fs.open(new Path(path))){

+                LineIterator lines = IOUtils.lineIterator(inputStream, "utf-8");

+                while (!stop && lines.hasNext() && rows < rowsForSubtask) {

+                    String line = lines.next().trim();

+                    if(line.isEmpty()){

+                        continue;

+                    }

+                    bytes = line.getBytes(StandardCharsets.UTF_8);

+                    ctx.collect(deserialization.deserialize(bytes));

+                    rows += 1;

+

+                    if(millisPerRow > 0){

+                        Thread.sleep(millisPerRow);

+                    }else{

+                        batchRows += 1;

+                        if(batchRows >= rowsPerSecondForSubtask){

+                            batchRows = 0;

+                            batchWait = 1000L - (System.currentTimeMillis() - batchStartTs);

+                            if(batchWait > 0) {

+                                Thread.sleep(batchWait);

+                            }

+                            batchStartTs = System.currentTimeMillis();

+                        }

+                    }

+                }

+            }

+        }

+    }

+

+    private long getRowsPerSecondForSubTask() {

+        int numSubtasks = getRuntimeContext().getNumberOfParallelSubtasks();

+        int indexOfThisSubtask = getRuntimeContext().getIndexOfThisSubtask();

+        long baseRowsPerSecondPerSubtask = rowsPerSecond / numSubtasks;

+        return (rowsPerSecond % numSubtasks > indexOfThisSubtask) ? baseRowsPerSecondPerSubtask + 1 : baseRowsPerSecondPerSubtask;

+    }

+

+    private long getRowsForSubTask() {

+        if (numberOfRows < 0) {

+            return Long.MAX_VALUE;

+        } else {

+            int numSubtasks = getRuntimeContext().getNumberOfParallelSubtasks();

+            int indexOfThisSubtask = getRuntimeContext().getIndexOfThisSubtask();

+            final long baseNumOfRowsPerSubtask = numberOfRows / numSubtasks;

+            return (numberOfRows % numSubtasks > indexOfThisSubtask) ? baseNumOfRowsPerSubtask + 1 : baseNumOfRowsPerSubtask;

+        }

+    }

+

+    @Override

+    public void cancel() {

+        stop = true;

+    }

+}

diff --git a/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/LocalTextFileSource.java b/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/LocalTextFileSource.java
new file mode 100644
index 0000000..4c2f6d1
--- /dev/null
+++ b/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/LocalTextFileSource.java
@@ -0,0 +1,92 @@
+package com.geedgenetworks.connectors.file;

+

+import com.geedgenetworks.common.Event;

+import org.apache.commons.io.IOUtils;

+import org.apache.commons.io.LineIterator;

+import org.apache.flink.api.common.serialization.DeserializationSchema;

+import org.apache.flink.streaming.api.functions.source.RichParallelSourceFunction;

+

+import java.io.FileInputStream;

+import java.io.InputStream;

+import java.nio.charset.StandardCharsets;

+

+public class LocalTextFileSource extends RichParallelSourceFunction<Event> {

+    private final DeserializationSchema<Event> deserialization;

+    private final String path;

+    private final int rowsPerSecond;

+    private final long numberOfRows;

+    private final long millisPerRow;

+    private volatile boolean stop;

+

+    protected LocalTextFileSource(DeserializationSchema<Event> deserialization, String path, int rowsPerSecond, long numberOfRows, long millisPerRow) {

+        this.deserialization = deserialization;

+        this.path = path;

+        this.rowsPerSecond = rowsPerSecond;

+        this.numberOfRows = numberOfRows;

+        this.millisPerRow = millisPerRow;

+    }

+

+    @Override

+    public void run(SourceContext<Event> ctx) throws Exception {

+        final long rowsForSubtask = getRowsForSubTask();

+        final long rowsPerSecondForSubtask = getRowsPerSecondForSubTask();

+

+        long rows = 0;

+        int batchRows = 0;

+        byte[] bytes;

+        long nextReadTime = System.currentTimeMillis();

+        long waitMs;

+

+        while (!stop && rows < rowsForSubtask) {

+            try(InputStream inputStream = new FileInputStream(path)){

+                LineIterator lines = IOUtils.lineIterator(inputStream, "utf-8");

+                while (!stop && lines.hasNext() && rows < rowsForSubtask) {

+                    String line = lines.next().trim();

+                    if(line.isEmpty()){

+                        continue;

+                    }

+                    bytes = line.getBytes(StandardCharsets.UTF_8);

+                    ctx.collect(deserialization.deserialize(bytes));

+                    rows += 1;

+

+                    if(millisPerRow > 0){

+                        Thread.sleep(millisPerRow);

+                    }else{

+                        batchRows += 1;

+                        if(batchRows >= rowsPerSecondForSubtask){

+                            batchRows = 0;

+                            nextReadTime += 1000;

+                            waitMs = Math.max(0, nextReadTime - System.currentTimeMillis());

+                            if(waitMs > 0) {

+                                Thread.sleep(waitMs);

+                            }

+                        }

+                    }

+                }

+            }

+        }

+    }

+

+    private long getRowsPerSecondForSubTask() {

+        int numSubtasks = getRuntimeContext().getNumberOfParallelSubtasks();

+        int indexOfThisSubtask = getRuntimeContext().getIndexOfThisSubtask();

+        long baseRowsPerSecondPerSubtask = rowsPerSecond / numSubtasks;

+        return (rowsPerSecond % numSubtasks > indexOfThisSubtask) ? baseRowsPerSecondPerSubtask + 1 : baseRowsPerSecondPerSubtask;

+    }

+

+    private long getRowsForSubTask() {

+        if (numberOfRows < 0) {

+            return Long.MAX_VALUE;

+        } else {

+            int numSubtasks = getRuntimeContext().getNumberOfParallelSubtasks();

+            int indexOfThisSubtask = getRuntimeContext().getIndexOfThisSubtask();

+            final long baseNumOfRowsPerSubtask = numberOfRows / numSubtasks;

+            return (numberOfRows % numSubtasks > indexOfThisSubtask) ? baseNumOfRowsPerSubtask + 1 : baseNumOfRowsPerSubtask;

+        }

+    }

+

+    @Override

+    public void cancel() {

+        stop = true;

+    }

+}

diff --git a/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/MemoryTextFileSource.java b/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/MemoryTextFileSource.java
new file mode 100644
index 0000000..00d1d14
--- /dev/null
+++ b/groot-connectors/connector-file/src/main/java/com/geedgenetworks/connectors/file/MemoryTextFileSource.java
@@ -0,0 +1,87 @@
+package com.geedgenetworks.connectors.file;

+

+import com.geedgenetworks.common.Event;

+import org.apache.flink.api.common.serialization.DeserializationSchema;

+import org.apache.flink.streaming.api.functions.source.RichParallelSourceFunction;

+

+import java.nio.ByteBuffer;

+

+public class MemoryTextFileSource extends RichParallelSourceFunction<Event> {

+    private final DeserializationSchema<Event> deserialization;

+    private final byte[] lineBytes;

+    private final int rowsPerSecond;

+    private final long numberOfRows;

+    private final long millisPerRow;

+    private volatile boolean stop;

+

+    protected MemoryTextFileSource(DeserializationSchema<Event> deserialization, byte[] lineBytes, int rowsPerSecond, long numberOfRows, long millisPerRow) {

+        this.deserialization = deserialization;

+        this.lineBytes = lineBytes;

+        this.rowsPerSecond = rowsPerSecond;

+        this.numberOfRows = numberOfRows;

+        this.millisPerRow = millisPerRow;

+    }

+

+    @Override

+    public void run(SourceContext<Event> ctx) throws Exception {

+        final long rowsForSubtask = getRowsForSubTask();

+        final long rowsPerSecondForSubtask = getRowsPerSecondForSubTask();

+

+        long rows = 0;

+        int batchRows = 0;

+        byte[] bytes;

+        long nextReadTime = System.currentTimeMillis();

+        long waitMs;

+        ByteBuffer buffer = ByteBuffer.wrap(lineBytes);

+        int lineSize;

+

+        while (!stop && rows < rowsForSubtask) {

+            while (!stop && buffer.hasRemaining() && rows < rowsForSubtask){

+                lineSize = buffer.getInt();

+                bytes = new byte[lineSize];

+                buffer.get(bytes);

+                ctx.collect(deserialization.deserialize(bytes));

+                rows += 1;

+

+                if(millisPerRow > 0){

+                    Thread.sleep(millisPerRow);

+                }else{

+                    batchRows += 1;

+                    if(batchRows >= rowsPerSecondForSubtask){

+                        batchRows = 0;

+                        nextReadTime += 1000;

+                        waitMs = Math.max(0, nextReadTime - System.currentTimeMillis());

+                        if(waitMs > 0) {

+                            Thread.sleep(waitMs);

+                        }

+                    }

+                }

+            }

+            buffer.clear();

+        }

+

+    }

+

+    private long getRowsPerSecondForSubTask() {

+        int numSubtasks = getRuntimeContext().getNumberOfParallelSubtasks();

+        int indexOfThisSubtask = getRuntimeContext().getIndexOfThisSubtask();

+        long baseRowsPerSecondPerSubtask = rowsPerSecond / numSubtasks;

+        return (rowsPerSecond % numSubtasks > indexOfThisSubtask) ? baseRowsPerSecondPerSubtask + 1 : baseRowsPerSecondPerSubtask;

+    }

+

+    private long getRowsForSubTask() {

+        if (numberOfRows < 0) {

+            return Long.MAX_VALUE;

+        } else {

+            int numSubtasks = getRuntimeContext().getNumberOfParallelSubtasks();

+            int indexOfThisSubtask = getRuntimeContext().getIndexOfThisSubtask();

+            final long baseNumOfRowsPerSubtask = numberOfRows / numSubtasks;

+            return (numberOfRows % numSubtasks > indexOfThisSubtask) ? baseNumOfRowsPerSubtask + 1 : baseNumOfRowsPerSubtask;

+        }

+    }

+

+    @Override

+    public void cancel() {

+        stop = true;

+    }

+}

diff --git a/groot-connectors/connector-file/src/main/resources/META-INF/services/com.geedgenetworks.core.factories.Factory b/groot-connectors/connector-file/src/main/resources/META-INF/services/com.geedgenetworks.core.factories.Factory
new file mode 100644
index 0000000..d1c44cc
--- /dev/null
+++ b/groot-connectors/connector-file/src/main/resources/META-INF/services/com.geedgenetworks.core.factories.Factory
@@ -0,0 +1 @@
+com.geedgenetworks.connectors.file.FileTableFactory
\ No newline at end of file
diff --git a/groot-connectors/pom.xml b/groot-connectors/pom.xml
index 81a0155..c19d051 100644
--- a/groot-connectors/pom.xml
+++ b/groot-connectors/pom.xml
@@ -15,6 +15,7 @@
         <module>connector-kafka</module>
         <module>connector-clickhouse</module>
         <module>connector-ipfix-collector</module>
+        <module>connector-file</module>
     </modules>
     <dependencies>
         <dependency>
diff --git a/groot-release/pom.xml b/groot-release/pom.xml
index 82e07eb..69e8ba9 100644
--- a/groot-release/pom.xml
+++ b/groot-release/pom.xml
@@ -107,6 +107,13 @@
                     <scope>provided</scope>
                 </dependency>
 
+                <dependency>
+                    <groupId>com.geedgenetworks</groupId>
+                    <artifactId>connector-file</artifactId>
+                    <version>${project.version}</version>
+                    <scope>provided</scope>
+                </dependency>
+
                 <!--Hbase Jars -->
                 <dependency>
                     <groupId>com.geedgenetworks</groupId>