feat(connector): add webhdfs sink

src/connector/Cargo.toml

@@ -93,6 +93,7 @@ opendal = { workspace = true, features = [
     "services-gcs",
     "services-memory",
     "services-s3",
+    "services-webhdfs",
 ] }
 openssl = "0.10"
 parking_lot = { workspace = true }

src/connector/src/sink/file_sink/mod.rs

@@ -17,3 +17,4 @@ pub mod fs;
 pub mod gcs;
 pub mod opendal_sink;
 pub mod s3;
+pub mod webhdfs;

src/connector/src/sink/file_sink/opendal_sink.rs

@@ -87,6 +87,7 @@ pub enum EngineType {
     S3,
     Fs,
     Azblob,
+    Webhdfs,
 }
 
 impl<S: OpendalSinkBackend> Sink for FileSink<S> {

src/connector/src/sink/file_sink/webhdfs.rs

@@ -0,0 +1,107 @@
+// Copyright 2024 RisingWave Labs
+//
+// 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.
+use std::collections::{BTreeMap, HashMap};
+
+use anyhow::anyhow;
+use opendal::layers::LoggingLayer;
+use opendal::services::Webhdfs;
+use opendal::Operator;
+use serde::Deserialize;
+use serde_with::serde_as;
+use with_options::WithOptions;
+
+use super::opendal_sink::FileSink;
+use crate::sink::file_sink::opendal_sink::OpendalSinkBackend;
+use crate::sink::{Result, SinkError, SINK_TYPE_APPEND_ONLY, SINK_TYPE_OPTION, SINK_TYPE_UPSERT};
+use crate::source::UnknownFields;
+#[derive(Deserialize, Debug, Clone, WithOptions)]
+pub struct WebhdfsCommon {
+    #[serde(rename = "webhdfs.endpoint")]
+    pub endpoint: String,
+    /// The directory where the sink file is located.
+    #[serde(rename = "webhdfs.path")]
+    pub path: String,
+}
+
+#[serde_as]
+#[derive(Clone, Debug, Deserialize, WithOptions)]
+pub struct WebhdfsConfig {
+    #[serde(flatten)]
+    pub common: WebhdfsCommon,
+
+    pub r#type: String, // accept "append-only"
+
+    #[serde(flatten)]
+    pub unknown_fields: HashMap<String, String>,
+}
+
+pub const WEBHDFS_SINK: &str = "webhdfs";
+
+impl<S: OpendalSinkBackend> FileSink<S> {
+    pub fn new_webhdfs_sink(config: WebhdfsConfig) -> Result<Operator> {
+        // Create webhdfs backend builder.
+        let mut builder = Webhdfs::default();
+        // Set the name node for hdfs.
+        builder.endpoint(&config.common.endpoint);
+        builder.root(&config.common.path);
+
+        let operator: Operator = Operator::new(builder)?
+            .layer(LoggingLayer::default())
+            .finish();
+
+        Ok(operator)
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct WebhdfsSink;
+
+impl UnknownFields for WebhdfsConfig {
+    fn unknown_fields(&self) -> HashMap<String, String> {
+        self.unknown_fields.clone()
+    }
+}
+
+impl OpendalSinkBackend for WebhdfsSink {
+    type Properties = WebhdfsConfig;
+
+    const SINK_NAME: &'static str = WEBHDFS_SINK;
+
+    fn from_btreemap(btree_map: BTreeMap<String, String>) -> Result<Self::Properties> {
+        let config =
+            serde_json::from_value::<WebhdfsConfig>(serde_json::to_value(btree_map).unwrap())
+                .map_err(|e| SinkError::Config(anyhow!(e)))?;
+        if config.r#type != SINK_TYPE_APPEND_ONLY && config.r#type != SINK_TYPE_UPSERT {
+            return Err(SinkError::Config(anyhow!(
+                "`{}` must be {}, or {}",
+                SINK_TYPE_OPTION,
+                SINK_TYPE_APPEND_ONLY,
+                SINK_TYPE_UPSERT
+            )));
+        }
+        Ok(config)
+    }
+
+    fn new_operator(properties: WebhdfsConfig) -> Result<Operator> {
+        FileSink::<WebhdfsSink>::new_webhdfs_sink(properties)
+    }
+
+    fn get_path(properties: Self::Properties) -> String {
+        properties.common.path
+    }
+
+    fn get_engine_type() -> super::opendal_sink::EngineType {
+        super::opendal_sink::EngineType::Webhdfs
+    }
+}

src/connector/src/sink/mod.rs

@@ -105,6 +105,7 @@ macro_rules! for_all_sinks {
 
                 { Gcs, $crate::sink::file_sink::opendal_sink::FileSink<$crate::sink::file_sink::gcs::GcsSink>  },
                 { Azblob, $crate::sink::file_sink::opendal_sink::FileSink<$crate::sink::file_sink::azblob::AzblobSink>},
+                { Webhdfs, $crate::sink::file_sink::opendal_sink::FileSink<$crate::sink::file_sink::webhdfs::WebhdfsSink>},
 
                 { Fs, $crate::sink::file_sink::opendal_sink::FileSink<FsSink>  },
                 { Snowflake, $crate::sink::snowflake::SnowflakeSink },

src/connector/with_options_sink.yaml

@@ -1022,3 +1022,15 @@ StarrocksConfig:
   - name: r#type
     field_type: String
     required: true
+WebhdfsConfig:
+  fields:
+  - name: webhdfs.endpoint
+    field_type: String
+    required: true
+  - name: webhdfs.path
+    field_type: String
+    comments: The directory where the sink file is located.
+    required: true
+  - name: r#type
+    field_type: String
+    required: true

src/frontend/src/handler/create_sink.rs

@@ -874,6 +874,7 @@ static CONNECTORS_COMPATIBLE_FORMATS: LazyLock<HashMap<String, HashMap<Format, V
         use risingwave_connector::sink::file_sink::gcs::GcsSink;
         use risingwave_connector::sink::file_sink::opendal_sink::FileSink;
         use risingwave_connector::sink::file_sink::s3::S3Sink;
+        use risingwave_connector::sink::file_sink::webhdfs::WebhdfsSink;
         use risingwave_connector::sink::google_pubsub::GooglePubSubSink;
         use risingwave_connector::sink::kafka::KafkaSink;
         use risingwave_connector::sink::kinesis::KinesisSink;
@@ -900,6 +901,9 @@ static CONNECTORS_COMPATIBLE_FORMATS: LazyLock<HashMap<String, HashMap<Format, V
                 FileSink::<AzblobSink>::SINK_NAME => hashmap!(
                     Format::Plain => vec![Encode::Parquet],
                 ),
+                FileSink::<WebhdfsSink>::SINK_NAME => hashmap!(
+                    Format::Plain => vec![Encode::Parquet],
+                ),
                 FileSink::<FsSink>::SINK_NAME => hashmap!(
                     Format::Plain => vec![Encode::Parquet],
                 ),