feat: HA for schema registry

e2e_test/schema_registry/pb.slt

@@ -14,6 +14,19 @@ FORMAT plain ENCODE protobuf(
         message = 'test.User'
     );
 
+# for multiple schema registry nodes
+statement ok
+create table sr_pb_test_bk with (
+    connector = 'kafka',
+    topic = 'sr_pb_test',
+    properties.bootstrap.server = 'message_queue:29092',
+    scan.startup.mode = 'earliest',
+    message = 'test.User')
+FORMAT plain ENCODE protobuf(
+        schema.registry = 'http://message_queue:8081,http://message_queue:8081',
+        message = 'test.User'
+    );
+
 # Wait for source
 sleep 10s
 
@@ -33,4 +46,7 @@ select min(id), max(id) from sr_pb_test;
 
 
 statement ok
-drop table sr_pb_test;
+drop table sr_pb_test;
+
+statement ok
+drop table sr_pb_test_bk;

src/connector/src/parser/avro/parser.rs

@@ -21,11 +21,12 @@ use risingwave_common::error::ErrorCode::{InternalError, ProtocolError};
 use risingwave_common::error::{Result, RwError};
 use risingwave_common::try_match_expand;
 use risingwave_pb::plan_common::ColumnDesc;
-use url::Url;
 
 use super::schema_resolver::*;
 use super::util::avro_schema_to_column_descs;
-use crate::parser::schema_registry::{extract_schema_id, get_subject_by_strategy, Client};
+use crate::parser::schema_registry::{
+    extract_schema_id, get_subject_by_strategy, handle_sr_list, Client,
+};
 use crate::parser::unified::avro::{AvroAccess, AvroParseOptions};
 use crate::parser::unified::AccessImpl;
 use crate::parser::util::{read_schema_from_http, read_schema_from_local, read_schema_from_s3};
@@ -115,9 +116,7 @@ impl AvroParserConfig {
         let avro_config = try_match_expand!(encoding_properties, EncodingProperties::Avro)?;
         let schema_location = &avro_config.row_schema_location;
         let enable_upsert = avro_config.enable_upsert;
-        let url = Url::parse(schema_location).map_err(|e| {
-            InternalError(format!("failed to parse url ({}): {}", schema_location, e))
-        })?;
+        let url = handle_sr_list(schema_location.as_str())?;
         if avro_config.use_schema_registry {
             let client = Client::new(url, &avro_config.client_config)?;
             let resolver = ConfluentSchemaResolver::new(client);
@@ -156,12 +155,13 @@ impl AvroParserConfig {
                     "avro upsert without schema registry is not supported".to_string(),
                 )));
             }
+            let url = url.get(0).unwrap();
             let schema_content = match url.scheme() {
                 "file" => read_schema_from_local(url.path()),
                 "s3" => {
-                    read_schema_from_s3(&url, avro_config.aws_auth_props.as_ref().unwrap()).await
+                    read_schema_from_s3(url, avro_config.aws_auth_props.as_ref().unwrap()).await
                 }
-                "https" | "http" => read_schema_from_http(&url).await,
+                "https" | "http" => read_schema_from_http(url).await,
                 scheme => Err(RwError::from(ProtocolError(format!(
                     "path scheme {} is not supported",
                     scheme

src/connector/src/parser/debezium/avro_parser.rs

@@ -17,15 +17,14 @@ use std::sync::Arc;
 
 use apache_avro::types::Value;
 use apache_avro::{from_avro_datum, Schema};
-use reqwest::Url;
-use risingwave_common::error::ErrorCode::{InternalError, ProtocolError};
+use risingwave_common::error::ErrorCode::ProtocolError;
 use risingwave_common::error::{Result, RwError};
 use risingwave_common::try_match_expand;
 use risingwave_pb::plan_common::ColumnDesc;
 
 use crate::parser::avro::schema_resolver::ConfluentSchemaResolver;
 use crate::parser::avro::util::avro_schema_to_column_descs;
-use crate::parser::schema_registry::{extract_schema_id, Client};
+use crate::parser::schema_registry::{extract_schema_id, handle_sr_list, Client};
 use crate::parser::unified::avro::{
     avro_extract_field_schema, avro_schema_skip_union, AvroAccess, AvroParseOptions,
 };
@@ -107,9 +106,7 @@ impl DebeziumAvroParserConfig {
         let schema_location = &avro_config.row_schema_location;
         let client_config = &avro_config.client_config;
         let kafka_topic = &avro_config.topic;
-        let url = Url::parse(schema_location).map_err(|e| {
-            InternalError(format!("failed to parse url ({}): {}", schema_location, e))
-        })?;
+        let url = handle_sr_list(schema_location)?;
         let client = Client::new(url, client_config)?;
         let raw_schema = client
             .get_schema_by_subject(format!("{}-key", &kafka_topic).as_str())

src/connector/src/parser/json_parser.rs

@@ -20,13 +20,13 @@ use risingwave_common::error::ErrorCode::{self, InternalError, ProtocolError};
 use risingwave_common::error::{Result, RwError};
 use risingwave_common::try_match_expand;
 use risingwave_pb::plan_common::ColumnDesc;
-use url::Url;
 
 use super::avro::schema_resolver::ConfluentSchemaResolver;
 use super::schema_registry::Client;
 use super::util::{get_kafka_topic, read_schema_from_http, read_schema_from_local};
 use super::{EncodingProperties, SchemaRegistryAuth, SpecificParserConfig};
 use crate::parser::avro::util::avro_schema_to_column_descs;
+use crate::parser::schema_registry::handle_sr_list;
 use crate::parser::unified::json::{JsonAccess, JsonParseOptions};
 use crate::parser::unified::util::apply_row_accessor_on_stream_chunk_writer;
 use crate::parser::unified::AccessImpl;
@@ -151,8 +151,7 @@ pub async fn schema_to_columns(
     use_schema_registry: bool,
     props: &HashMap<String, String>,
 ) -> anyhow::Result<Vec<ColumnDesc>> {
-    let url = Url::parse(schema_location)
-        .map_err(|e| InternalError(format!("failed to parse url ({}): {}", schema_location, e)))?;
+    let url = handle_sr_list(schema_location)?;
     let schema_content = if use_schema_registry {
         let schema_registry_auth = SchemaRegistryAuth::from(props);
         let client = Client::new(url, &schema_registry_auth)?;
@@ -163,9 +162,10 @@ pub async fn schema_to_columns(
             .await?
             .content
     } else {
+        let url = url.get(0).unwrap();
         match url.scheme() {
             "file" => read_schema_from_local(url.path()),
-            "https" | "http" => read_schema_from_http(&url).await,
+            "https" | "http" => read_schema_from_http(url).await,
             scheme => Err(RwError::from(ProtocolError(format!(
                 "path scheme {} is not supported",
                 scheme

src/connector/src/parser/protobuf/parser.rs

@@ -25,11 +25,12 @@ use risingwave_common::error::{Result, RwError};
 use risingwave_common::try_match_expand;
 use risingwave_common::types::{DataType, Datum, Decimal, ScalarImpl, F32, F64};
 use risingwave_pb::plan_common::ColumnDesc;
-use url::Url;
 
 use super::schema_resolver::*;
 use crate::aws_utils::load_file_descriptor_from_s3;
-use crate::parser::schema_registry::{extract_schema_id, get_subject_by_strategy, Client};
+use crate::parser::schema_registry::{
+    extract_schema_id, get_subject_by_strategy, handle_sr_list, Client,
+};
 use crate::parser::unified::protobuf::ProtobufAccess;
 use crate::parser::unified::AccessImpl;
 use crate::parser::{AccessBuilder, EncodingProperties};
@@ -80,8 +81,7 @@ impl ProtobufParserConfig {
         let protobuf_config = try_match_expand!(encoding_properties, EncodingProperties::Protobuf)?;
         let location = &protobuf_config.row_schema_location;
         let message_name = &protobuf_config.message_name;
-        let url = Url::parse(location)
-            .map_err(|e| InternalError(format!("failed to parse url ({}): {}", location, e)))?;
+        let url = handle_sr_list(location.as_str())?;
 
         let schema_bytes = if protobuf_config.use_schema_registry {
             let (schema_key, schema_value) = get_subject_by_strategy(
@@ -99,6 +99,7 @@ impl ProtobufParserConfig {
             let client = Client::new(url, &protobuf_config.client_config)?;
             compile_file_descriptor_from_schema_registry(schema_value.as_str(), &client).await?
         } else {
+            let url = url.get(0).unwrap();
             match url.scheme() {
                 // TODO(Tao): support local file only when it's compiled in debug mode.
                 "file" => {
@@ -115,12 +116,12 @@ impl ProtobufParserConfig {
                 }
                 "s3" => {
                     load_file_descriptor_from_s3(
-                        &url,
+                        url,
                         protobuf_config.aws_auth_props.as_ref().unwrap(),
                     )
                     .await
                 }
-                "https" | "http" => load_file_descriptor_from_http(&url).await,
+                "https" | "http" => load_file_descriptor_from_http(url).await,
                 scheme => Err(RwError::from(ProtocolError(format!(
                     "path scheme {} is not supported",
                     scheme