HDDS-1382. Create customized CSI server for Ozone

Closes #693

hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/HddsUtils.java

@@ -226,7 +226,12 @@ public final class HddsUtils {
     if ((value == null) || value.isEmpty()) {
       return Optional.empty();
     }
-    return Optional.of(HostAndPort.fromString(value).getHostText());
+    String hostname = value.replaceAll("\\:[0-9]+$", "");
+    if (hostname.length() == 0) {
+      return Optional.empty();
+    } else {
+      return Optional.of(hostname);
+    }
   }
 
   /**

hadoop-hdds/common/src/test/java/org/apache/hadoop/hdds/TestHddsUtils.java

@@ -0,0 +1,42 @@
+/**
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.hadoop.hdds;
+
+import java.util.Optional;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * Testing HddsUtils.
+ */
+public class TestHddsUtils {
+
+  @Test
+  public void testGetHostName() {
+    Assert.assertEquals(Optional.of("localhost"),
+        HddsUtils.getHostName("localhost:1234"));
+
+    Assert.assertEquals(Optional.of("localhost"),
+        HddsUtils.getHostName("localhost"));
+
+    Assert.assertEquals(Optional.empty(),
+        HddsUtils.getHostName(":1234"));
+  }
+
+}

hadoop-ozone/common/src/main/bin/ozone

@@ -46,6 +46,7 @@ function hadoop_usage
   hadoop_add_subcommand "om" daemon "Ozone Manager"
   hadoop_add_subcommand "scm" daemon "run the Storage Container Manager service"
   hadoop_add_subcommand "s3g" daemon "run the S3 compatible REST gateway"
+  hadoop_add_subcommand "csi" daemon "run the standalone CSI daemon"
   hadoop_add_subcommand "recon" daemon "run the Recon service"
   hadoop_add_subcommand "scmcli" client "run the CLI of the Storage Container Manager"
   hadoop_add_subcommand "sh" client "command line interface for object store operations"
@@ -154,6 +155,11 @@ function ozonecmd_case
       HADOOP_CLASSNAME='org.apache.hadoop.ozone.s3.Gateway'
       OZONE_RUN_ARTIFACT_NAME="hadoop-ozone-s3gateway"
     ;;
+    csi)
+      HADOOP_SUBCMD_SUPPORTDAEMONIZATION="true"
+      HADOOP_CLASSNAME='org.apache.hadoop.ozone.csi.CsiServer'
+      OZONE_RUN_ARTIFACT_NAME="hadoop-ozone-csi"
+    ;;
     recon)
       HADOOP_SUBCMD_SUPPORTDAEMONIZATION="true"
       HADOOP_CLASSNAME='org.apache.hadoop.ozone.recon.ReconServer'

hadoop-ozone/csi/dev-support/findbugsExcludeFile.xml

@@ -0,0 +1,22 @@
+<?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.
+-->
+<FindBugsFilter>
+  <Match>
+    <Package name="csi.v1"/>
+  </Match>
+</FindBugsFilter>

hadoop-ozone/csi/pom.xml

@@ -0,0 +1,169 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed 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. See accompanying LICENSE file.
+-->
+<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.hadoop</groupId>
+    <artifactId>hadoop-ozone</artifactId>
+    <version>0.5.0-SNAPSHOT</version>
+  </parent>
+  <artifactId>hadoop-ozone-csi</artifactId>
+  <version>0.5.0-SNAPSHOT</version>
+  <description>Apache Hadoop Ozone CSI service</description>
+  <name>Apache Hadoop Ozone CSI service</name>
+  <packaging>jar</packaging>
+
+  <properties>
+    <grpc.version>1.17.1</grpc.version>
+  </properties>
+  <dependencies>
+    <dependency>
+      <groupId>com.google.protobuf</groupId>
+      <artifactId>protobuf-java-util</artifactId>
+      <version>3.5.1</version>
+      <exclusions>
+        <exclusion>
+          <groupId>com.google.protobuf</groupId>
+          <artifactId>protobuf-java</artifactId>
+        </exclusion>
+      </exclusions>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.hadoop</groupId>
+      <artifactId>hadoop-hdds-config</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>com.google.guava</groupId>
+      <artifactId>guava</artifactId>
+      <version>26.0-android</version>
+    </dependency>
+    <dependency>
+      <groupId>com.google.protobuf</groupId>
+      <artifactId>protobuf-java</artifactId>
+      <version>3.5.1</version>
+    </dependency>
+    <dependency>
+      <groupId>io.grpc</groupId>
+      <artifactId>grpc-netty</artifactId>
+      <version>${grpc.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>io.netty</groupId>
+      <artifactId>netty-transport-native-epoll</artifactId>
+      <version>4.1.30.Final</version>
+    </dependency>
+    <dependency>
+      <groupId>io.grpc</groupId>
+      <artifactId>grpc-protobuf</artifactId>
+      <version>${grpc.version}</version>
+      <exclusions>
+        <exclusion>
+          <groupId>com.google.protobuf</groupId>
+          <artifactId>protobuf-java</artifactId>
+        </exclusion>
+      </exclusions>
+    </dependency>
+    <dependency>
+      <groupId>io.grpc</groupId>
+      <artifactId>grpc-stub</artifactId>
+      <version>${grpc.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.hadoop</groupId>
+      <artifactId>hadoop-ozone-client</artifactId>
+      <exclusions>
+        <exclusion>
+          <groupId>com.google.guava</groupId>
+          <artifactId>guava</artifactId>
+        </exclusion>
+        <exclusion>
+          <groupId>com.google.protobuf</groupId>
+          <artifactId>protobuf-java</artifactId>
+        </exclusion>
+        <exclusion>
+          <groupId>io.netty</groupId>
+          <artifactId>netty-all</artifactId>
+        </exclusion>
+      </exclusions>
+    </dependency>
+  </dependencies>
+
+
+  <build>
+    <extensions>
+      <extension>
+        <groupId>kr.motd.maven</groupId>
+        <artifactId>os-maven-plugin</artifactId>
+        <version>${os-maven-plugin.version}</version>
+      </extension>
+    </extensions>
+    <plugins>
+      <plugin>
+        <groupId>org.xolstice.maven.plugins</groupId>
+        <artifactId>protobuf-maven-plugin</artifactId>
+        <version>${protobuf-maven-plugin.version}</version>
+        <extensions>true</extensions>
+        <configuration>
+          <protocArtifact>
+            com.google.protobuf:protoc:${protobuf-compile.version}:exe:${os.detected.classifier}
+          </protocArtifact>
+          <protoSourceRoot>${basedir}/src/main/proto/</protoSourceRoot>
+          <includes>
+            <include>csi.proto</include>
+          </includes>
+          <outputDirectory>target/generated-sources/java</outputDirectory>
+          <clearOutputDirectory>false</clearOutputDirectory>
+        </configuration>
+        <executions>
+          <execution>
+            <id>compile-protoc</id>
+            <goals>
+              <goal>compile</goal>
+              <goal>test-compile</goal>
+              <goal>compile-custom</goal>
+              <goal>test-compile-custom</goal>
+            </goals>
+            <configuration>
+              <pluginId>grpc-java</pluginId>
+              <pluginArtifact>
+                io.grpc:protoc-gen-grpc-java:${grpc.version}:exe:${os.detected.classifier}
+              </pluginArtifact>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>depcheck</id>
+            <phase></phase>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>findbugs-maven-plugin</artifactId>
+        <configuration>
+          <excludeFilterFile>${basedir}/dev-support/findbugsExcludeFile.xml
+          </excludeFilterFile>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+</project>

hadoop-ozone/csi/src/main/java/org/apache/hadoop/ozone/csi/ControllerService.java

@@ -0,0 +1,123 @@
+/**
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.hadoop.ozone.csi;
+
+import java.io.IOException;
+
+import org.apache.hadoop.ozone.client.OzoneClient;
+
+import csi.v1.ControllerGrpc.ControllerImplBase;
+import csi.v1.Csi.CapacityRange;
+import csi.v1.Csi.ControllerGetCapabilitiesRequest;
+import csi.v1.Csi.ControllerGetCapabilitiesResponse;
+import csi.v1.Csi.ControllerServiceCapability;
+import csi.v1.Csi.ControllerServiceCapability.RPC;
+import csi.v1.Csi.ControllerServiceCapability.RPC.Type;
+import csi.v1.Csi.CreateVolumeRequest;
+import csi.v1.Csi.CreateVolumeResponse;
+import csi.v1.Csi.DeleteVolumeRequest;
+import csi.v1.Csi.DeleteVolumeResponse;
+import csi.v1.Csi.Volume;
+import io.grpc.stub.StreamObserver;
+
+/**
+ * CSI controller service.
+ * <p>
+ * This service usually runs only once and responsible for the creation of
+ * the volume.
+ */
+public class ControllerService extends ControllerImplBase {
+
+  private final String volumeOwner;
+
+  private long defaultVolumeSize;
+
+  private OzoneClient ozoneClient;
+
+  public ControllerService(OzoneClient ozoneClient, long volumeSize,
+      String volumeOwner) {
+    this.volumeOwner = volumeOwner;
+    this.defaultVolumeSize = volumeSize;
+    this.ozoneClient = ozoneClient;
+  }
+
+  @Override
+  public void createVolume(CreateVolumeRequest request,
+      StreamObserver<CreateVolumeResponse> responseObserver) {
+    try {
+      ozoneClient.getObjectStore()
+          .createS3Bucket(volumeOwner, request.getName());
+
+      long size = findSize(request.getCapacityRange());
+
+      CreateVolumeResponse response = CreateVolumeResponse.newBuilder()
+          .setVolume(Volume.newBuilder()
+              .setVolumeId(request.getName())
+              .setCapacityBytes(size))
+          .build();
+
+      responseObserver.onNext(response);
+      responseObserver.onCompleted();
+    } catch (IOException e) {
+      responseObserver.onError(e);
+    }
+  }
+
+  private long findSize(CapacityRange capacityRange) {
+    if (capacityRange.getRequiredBytes() != 0) {
+      return capacityRange.getRequiredBytes();
+    } else {
+      if (capacityRange.getLimitBytes() != 0) {
+        return Math.min(defaultVolumeSize, capacityRange.getLimitBytes());
+      } else {
+        //~1 gig
+        return defaultVolumeSize;
+      }
+    }
+  }
+
+  @Override
+  public void deleteVolume(DeleteVolumeRequest request,
+      StreamObserver<DeleteVolumeResponse> responseObserver) {
+    try {
+      ozoneClient.getObjectStore().deleteS3Bucket(request.getVolumeId());
+
+      DeleteVolumeResponse response = DeleteVolumeResponse.newBuilder()
+          .build();
+
+      responseObserver.onNext(response);
+      responseObserver.onCompleted();
+    } catch (IOException e) {
+      responseObserver.onError(e);
+    }
+  }
+
+  @Override
+  public void controllerGetCapabilities(
+      ControllerGetCapabilitiesRequest request,
+      StreamObserver<ControllerGetCapabilitiesResponse> responseObserver) {
+    ControllerGetCapabilitiesResponse response =
+        ControllerGetCapabilitiesResponse.newBuilder()
+            .addCapabilities(
+                ControllerServiceCapability.newBuilder().setRpc(
+                    RPC.newBuilder().setType(Type.CREATE_DELETE_VOLUME)))
+            .build();
+    responseObserver.onNext(response);
+    responseObserver.onCompleted();
+  }
+}

hadoop-ozone/csi/src/main/java/org/apache/hadoop/ozone/csi/CsiServer.java

@@ -0,0 +1,160 @@
+/**
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.hadoop.ozone.csi;
+
+import java.util.concurrent.Callable;
+
+import org.apache.hadoop.hdds.cli.GenericCli;
+import org.apache.hadoop.hdds.cli.HddsVersionProvider;
+import org.apache.hadoop.hdds.conf.Config;
+import org.apache.hadoop.hdds.conf.ConfigGroup;
+import org.apache.hadoop.hdds.conf.ConfigTag;
+import org.apache.hadoop.hdds.conf.OzoneConfiguration;
+import org.apache.hadoop.ozone.client.OzoneClient;
+import org.apache.hadoop.ozone.client.OzoneClientFactory;
+import org.apache.hadoop.util.StringUtils;
+
+import io.grpc.Server;
+import io.grpc.netty.NettyServerBuilder;
+import io.netty.channel.epoll.EpollEventLoopGroup;
+import io.netty.channel.epoll.EpollServerDomainSocketChannel;
+import io.netty.channel.unix.DomainSocketAddress;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import picocli.CommandLine.Command;
+
+/**
+ * CLI entrypoint of the CSI service daemon.
+ */
+@Command(name = "ozone csi",
+    hidden = true, description = "CSI service daemon.",
+    versionProvider = HddsVersionProvider.class,
+    mixinStandardHelpOptions = true)
+public class CsiServer extends GenericCli implements Callable<Void> {
+
+  private final static Logger LOG = LoggerFactory.getLogger(CsiServer.class);
+
+  @Override
+  public Void call() throws Exception {
+    OzoneConfiguration ozoneConfiguration = createOzoneConfiguration();
+    CsiConfig csiConfig = ozoneConfiguration.getObject(CsiConfig.class);
+
+    OzoneClient rpcClient = OzoneClientFactory.getRpcClient(ozoneConfiguration);
+
+    EpollEventLoopGroup group = new EpollEventLoopGroup();
+
+    if (csiConfig.getVolumeOwner().isEmpty()) {
+      throw new IllegalArgumentException(
+          "ozone.csi.owner is not set. You should set this configuration "
+              + "variable to define which user should own all the created "
+              + "buckets.");
+    }
+
+    Server server =
+        NettyServerBuilder
+            .forAddress(new DomainSocketAddress(csiConfig.getSocketPath()))
+            .channelType(EpollServerDomainSocketChannel.class)
+            .workerEventLoopGroup(group)
+            .bossEventLoopGroup(group)
+            .addService(new IdentitiyService())
+            .addService(new ControllerService(rpcClient,
+                csiConfig.getDefaultVolumeSize(), csiConfig.getVolumeOwner()))
+            .addService(new NodeService(csiConfig))
+            .build();
+
+    server.start();
+    server.awaitTermination();
+    rpcClient.close();
+    return null;
+  }
+
+  public static void main(String[] args) {
+
+    StringUtils.startupShutdownMessage(CsiServer.class, args, LOG);
+    new CsiServer().run(args);
+  }
+
+  /**
+   * Configuration settings specific to the CSI server.
+   */
+  @ConfigGroup(prefix = "ozone.csi")
+  public static class CsiConfig {
+    private String socketPath;
+    private long defaultVolumeSize;
+    private String s3gAddress;
+    private String volumeOwner;
+
+    public String getSocketPath() {
+      return socketPath;
+    }
+
+    public String getVolumeOwner() {
+      return volumeOwner;
+    }
+
+    @Config(key = "owner",
+        defaultValue = "",
+        description =
+            "This is the username which is used to create the requested "
+                + "storage. Used as a hadoop username and the generated ozone"
+                + " volume used to store all the buckets. WARNING: It can "
+                + "be a security hole to use CSI in a secure environments as "
+                + "ALL the users can request the mount of a specific bucket "
+                + "via the CSI interface.",
+        tags = ConfigTag.STORAGE)
+    public void setVolumeOwner(String volumeOwner) {
+      this.volumeOwner = volumeOwner;
+    }
+
+    @Config(key = "socket",
+        defaultValue = "/var/lib/csi.sock",
+        description =
+            "The socket where all the CSI services will listen (file name).",
+        tags = ConfigTag.STORAGE)
+    public void setSocketPath(String socketPath) {
+      this.socketPath = socketPath;
+    }
+
+    public long getDefaultVolumeSize() {
+      return defaultVolumeSize;
+    }
+
+    @Config(key = "default-volume-size",
+        defaultValue = "1000000000",
+        description =
+            "The default size of the create volumes (if not specified).",
+        tags = ConfigTag.STORAGE)
+    public void setDefaultVolumeSize(long defaultVolumeSize) {
+      this.defaultVolumeSize = defaultVolumeSize;
+    }
+
+    public String getS3gAddress() {
+      return s3gAddress;
+    }
+
+    @Config(key = "s3g.address",
+        defaultValue = "http://localhost:9878",
+        description =
+            "The default size of the created volumes (if not specified in the"
+                + " requests).",
+        tags = ConfigTag.STORAGE)
+    public void setS3gAddress(String s3gAddress) {
+      this.s3gAddress = s3gAddress;
+    }
+  }
+}

hadoop-ozone/csi/src/main/java/org/apache/hadoop/ozone/csi/IdentitiyService.java

@@ -0,0 +1,72 @@
+/**
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.hadoop.ozone.csi;
+
+import org.apache.hadoop.ozone.util.OzoneVersionInfo;
+
+import com.google.protobuf.BoolValue;
+import csi.v1.Csi.GetPluginCapabilitiesResponse;
+import csi.v1.Csi.GetPluginInfoResponse;
+import csi.v1.Csi.PluginCapability;
+import csi.v1.Csi.PluginCapability.Service;
+import static csi.v1.Csi.PluginCapability.Service.Type.CONTROLLER_SERVICE;
+import csi.v1.Csi.ProbeResponse;
+import csi.v1.IdentityGrpc.IdentityImplBase;
+import io.grpc.stub.StreamObserver;
+
+/**
+ * Implementation of the CSI identity service.
+ */
+public class IdentitiyService extends IdentityImplBase {
+
+  @Override
+  public void getPluginInfo(csi.v1.Csi.GetPluginInfoRequest request,
+      StreamObserver<csi.v1.Csi.GetPluginInfoResponse> responseObserver) {
+    GetPluginInfoResponse response = GetPluginInfoResponse.newBuilder()
+        .setName("org.apache.hadoop.ozone")
+        .setVendorVersion(OzoneVersionInfo.OZONE_VERSION_INFO.getVersion())
+        .build();
+    responseObserver.onNext(response);
+    responseObserver.onCompleted();
+  }
+
+  @Override
+  public void getPluginCapabilities(
+      csi.v1.Csi.GetPluginCapabilitiesRequest request,
+      StreamObserver<GetPluginCapabilitiesResponse> responseObserver) {
+    GetPluginCapabilitiesResponse response =
+        GetPluginCapabilitiesResponse.newBuilder()
+            .addCapabilities(PluginCapability.newBuilder().setService(
+                Service.newBuilder().setType(CONTROLLER_SERVICE)))
+            .build();
+    responseObserver.onNext(response);
+    responseObserver.onCompleted();
+
+  }
+
+  @Override
+  public void probe(csi.v1.Csi.ProbeRequest request,
+      StreamObserver<csi.v1.Csi.ProbeResponse> responseObserver) {
+    ProbeResponse response = ProbeResponse.newBuilder()
+        .setReady(BoolValue.of(true))
+        .build();
+    responseObserver.onNext(response);
+    responseObserver.onCompleted();
+
+  }
+}

hadoop-ozone/csi/src/main/java/org/apache/hadoop/ozone/csi/NodeService.java

@@ -0,0 +1,142 @@
+/**
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.hadoop.ozone.csi;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.concurrent.TimeUnit;
+
+import org.apache.hadoop.ozone.csi.CsiServer.CsiConfig;
+
+import csi.v1.Csi.NodeGetCapabilitiesRequest;
+import csi.v1.Csi.NodeGetCapabilitiesResponse;
+import csi.v1.Csi.NodeGetInfoRequest;
+import csi.v1.Csi.NodeGetInfoResponse;
+import csi.v1.Csi.NodePublishVolumeRequest;
+import csi.v1.Csi.NodePublishVolumeResponse;
+import csi.v1.Csi.NodeUnpublishVolumeRequest;
+import csi.v1.Csi.NodeUnpublishVolumeResponse;
+import csi.v1.NodeGrpc.NodeImplBase;
+import io.grpc.stub.StreamObserver;
+import org.apache.commons.io.IOUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Implementation of the CSI node service.
+ */
+public class NodeService extends NodeImplBase {
+
+  private static final Logger LOG = LoggerFactory.getLogger(NodeService.class);
+
+  private String s3Endpoint;
+
+  public NodeService(CsiConfig configuration) {
+    this.s3Endpoint = configuration.getS3gAddress();
+
+  }
+
+  @Override
+  public void nodePublishVolume(NodePublishVolumeRequest request,
+      StreamObserver<NodePublishVolumeResponse> responseObserver) {
+
+    try {
+      Files.createDirectories(Paths.get(request.getTargetPath()));
+      String mountCommand =
+          String.format("goofys --endpoint %s %s %s",
+              s3Endpoint,
+              request.getVolumeId(),
+              request.getTargetPath());
+      LOG.info("Executing {}", mountCommand);
+
+      executeCommand(mountCommand);
+
+      responseObserver.onNext(NodePublishVolumeResponse.newBuilder()
+          .build());
+      responseObserver.onCompleted();
+
+    } catch (Exception e) {
+      responseObserver.onError(e);
+    }
+
+  }
+
+  private void executeCommand(String mountCommand)
+      throws IOException, InterruptedException {
+    Process exec = Runtime.getRuntime().exec(mountCommand);
+    exec.waitFor(10, TimeUnit.SECONDS);
+
+    LOG.info("Command is executed with  stdout: {}, stderr: {}",
+        IOUtils.toString(exec.getInputStream(), "UTF-8"),
+        IOUtils.toString(exec.getErrorStream(), "UTF-8"));
+    if (exec.exitValue() != 0) {
+      throw new RuntimeException(String
+          .format("Return code of the command %s was %d", mountCommand,
+              exec.exitValue()));
+    }
+  }
+
+  @Override
+  public void nodeUnpublishVolume(NodeUnpublishVolumeRequest request,
+      StreamObserver<NodeUnpublishVolumeResponse> responseObserver) {
+    String umountCommand =
+        String.format("fusermount -u %s", request.getTargetPath());
+    LOG.info("Executing {}", umountCommand);
+
+    try {
+      executeCommand(umountCommand);
+
+      responseObserver.onNext(NodeUnpublishVolumeResponse.newBuilder()
+          .build());
+      responseObserver.onCompleted();
+
+    } catch (Exception e) {
+      responseObserver.onError(e);
+    }
+
+  }
+
+  @Override
+  public void nodeGetCapabilities(NodeGetCapabilitiesRequest request,
+      StreamObserver<NodeGetCapabilitiesResponse> responseObserver) {
+    NodeGetCapabilitiesResponse response =
+        NodeGetCapabilitiesResponse.newBuilder()
+            .build();
+    responseObserver.onNext(response);
+    responseObserver.onCompleted();
+  }
+
+  @Override
+  public void nodeGetInfo(NodeGetInfoRequest request,
+      StreamObserver<NodeGetInfoResponse> responseObserver) {
+    NodeGetInfoResponse response = null;
+    try {
+      response = NodeGetInfoResponse.newBuilder()
+          .setNodeId(InetAddress.getLocalHost().getHostName())
+          .build();
+      responseObserver.onNext(response);
+      responseObserver.onCompleted();
+    } catch (UnknownHostException e) {
+      responseObserver.onError(e);
+    }
+
+  }
+}

hadoop-ozone/csi/src/main/java/org/apache/hadoop/ozone/csi/package-info.java

@@ -0,0 +1,22 @@
+/**
+ * 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.hadoop.ozone.csi;
+
+/**
+ * Container Storage Interface server implementation for Ozone.
+ */

hadoop-ozone/dist/pom.xml

@@ -68,6 +68,13 @@
                   <classifier>classpath</classifier>
                   <destFileName>hadoop-ozone-s3gateway.classpath</destFileName>
                 </artifactItem>
+                <artifactItem>
+                  <groupId>org.apache.hadoop</groupId>
+                  <artifactId>hadoop-ozone-csi</artifactId>
+                  <version>${ozone.version}</version>
+                  <classifier>classpath</classifier>
+                  <destFileName>hadoop-ozone-csi.classpath</destFileName>
+                </artifactItem>
                 <artifactItem>
                   <groupId>org.apache.hadoop</groupId>
                   <artifactId>hadoop-ozone-ozone-manager</artifactId>
@@ -133,6 +140,29 @@
               <includeScope>runtime</includeScope>
             </configuration>
           </execution>
+          <execution>
+            <id>copy-omitted-jars</id>
+            <phase>prepare-package</phase>
+            <goals>
+              <goal>copy</goal>
+            </goals>
+            <configuration>
+              <outputDirectory>target/ozone-${ozone.version}/share/ozone/lib
+              </outputDirectory>
+              <artifactItems>
+                <artifactItem>
+                  <groupId>com.google.protobuf</groupId>
+                  <artifactId>protobuf-java</artifactId>
+                  <version>3.5.1</version>
+                </artifactItem>
+                <artifactItem>
+                  <groupId>com.google.guava</groupId>
+                  <artifactId>guava</artifactId>
+                  <version>26.0-android</version>
+                </artifactItem>
+              </artifactItems>
+            </configuration>
+          </execution>
         </executions>
       </plugin>
       <plugin>
@@ -247,6 +277,10 @@
       <groupId>org.apache.hadoop</groupId>
       <artifactId>hadoop-ozone-s3gateway</artifactId>
     </dependency>
+    <dependency>
+      <groupId>org.apache.hadoop</groupId>
+      <artifactId>hadoop-ozone-csi</artifactId>
+    </dependency>
     <dependency>
       <groupId>org.apache.hadoop</groupId>
       <artifactId>hadoop-ozone-ozone-manager</artifactId>

hadoop-ozone/dist/src/main/Dockerfile

@@ -19,3 +19,7 @@ FROM apache/hadoop-runner:jdk11
 ADD --chown=hadoop . /opt/hadoop
 
 WORKDIR /opt/hadoop
+
+RUN sudo wget https://os.anzix.net/goofys -O /usr/bin/goofys
+RUN sudo chmod 755 /usr/bin/goofys
+RUN sudo yum install -y fuse

hadoop-ozone/integration-test/pom.xml

@@ -56,6 +56,10 @@ https://maven.apache.org/xsd/maven-4.0.0.xsd">
       <groupId>org.apache.hadoop</groupId>
       <artifactId>hadoop-ozone-s3gateway</artifactId>
     </dependency>
+    <dependency>
+      <groupId>org.apache.hadoop</groupId>
+      <artifactId>hadoop-ozone-csi</artifactId>
+    </dependency>
     <dependency>
       <groupId>org.apache.hadoop</groupId>
       <artifactId>hadoop-ozone-recon</artifactId>

hadoop-ozone/pom.xml

@@ -52,6 +52,7 @@
     <module>ozone-recon</module>
     <module>ozone-recon-codegen</module>
     <module>upgrade</module>
+    <module>csi</module>
   </modules>
 
   <repositories>
@@ -89,6 +90,11 @@
         <artifactId>hadoop-ozone-s3gateway</artifactId>
         <version>${ozone.version}</version>
       </dependency>
+      <dependency>
+        <groupId>org.apache.hadoop</groupId>
+        <artifactId>hadoop-ozone-csi</artifactId>
+        <version>${ozone.version}</version>
+      </dependency>
       <dependency>
         <groupId>org.apache.hadoop</groupId>
         <artifactId>hadoop-ozone-datanode</artifactId>
@@ -114,6 +120,11 @@
         <artifactId>hadoop-ozone-filesystem-lib-legacy</artifactId>
         <version>${ozone.version}</version>
       </dependency>
+      <dependency>
+        <groupId>org.apache.hadoop</groupId>
+        <artifactId>hadoop-hdds-config</artifactId>
+        <version>${hdds.version}</version>
+      </dependency>
       <dependency>
         <groupId>org.apache.hadoop</groupId>
         <artifactId>hadoop-ozone-integration-test</artifactId>