sandynz commented on code in PR #24798:
URL: https://github.com/apache/shardingsphere/pull/24798#discussion_r1147189499
##########
proxy/backend/core/src/main/java/org/apache/shardingsphere/proxy/backend/handler/cdc/CDCBackendHandler.java:
##########
@@ -131,17 +130,17 @@ public String getDatabaseNameByJobId(final String jobId) {
/**
* Start streaming.
*
- * @param requestId request id
* @param jobId job id
* @param channel channel
* @param connectionContext connection context
- * @return CDC response
*/
- // TODO not return CDCResponse
- public CDCResponse startStreaming(final String requestId, final String
jobId, final CDCConnectionContext connectionContext, final Channel channel) {
+ public void startStreaming(final String jobId, final CDCConnectionContext
connectionContext, final Channel channel) {
CDCJobConfiguration cdcJobConfig = jobAPI.getJobConfiguration(jobId);
if (null == cdcJobConfig) {
- return CDCResponseGenerator.failed(jobId,
CDCResponseErrorCode.ILLEGAL_REQUEST_ERROR, String.format("the %s job config
doesn't exist", jobId));
+ throw new PipelineJobNotFoundException(jobId);
+ }
+ if (PipelineJobCenter.isJobExisting(jobId)) {
+ throw new PipelineJobHasAlreadyStartedException(jobId);
}
Review Comment:
If existing job is stopping, then we could not just throw exception
##########
proxy/frontend/core/src/main/java/org/apache/shardingsphere/proxy/frontend/netty/CDCChannelInboundHandler.java:
##########
@@ -165,59 +168,49 @@ private String getHostAddress(final ChannelHandlerContext
context) {
private void processStreamDataRequest(final ChannelHandlerContext ctx,
final CDCRequest request, final CDCConnectionContext connectionContext) {
if (!request.hasStreamDataRequestBody()) {
-
ctx.writeAndFlush(CDCResponseGenerator.failed(request.getRequestId(),
CDCResponseErrorCode.ILLEGAL_REQUEST_ERROR, "Miss stream data request body"));
- return;
+ throw CDCExceptionWrapper.wrapper(request.getRequestId(), new
PipelineInvalidParameterException("stream data request body is empty"));
}
StreamDataRequestBody requestBody = request.getStreamDataRequestBody();
if (requestBody.getDatabase().isEmpty()) {
-
ctx.writeAndFlush(CDCResponseGenerator.failed(request.getRequestId(),
CDCResponseErrorCode.ILLEGAL_REQUEST_ERROR, "database not allowed to be
empty"));
- return;
+ throw CDCExceptionWrapper.wrapper(request.getRequestId(), new
PipelineInvalidParameterException("database is empty"));
}
if (requestBody.getSourceSchemaTableList().isEmpty()) {
-
ctx.writeAndFlush(CDCResponseGenerator.failed(request.getRequestId(),
CDCResponseErrorCode.ILLEGAL_REQUEST_ERROR, "Illegal stream data request
parameter"));
- return;
+ throw CDCExceptionWrapper.wrapper(request.getRequestId(), new
PipelineInvalidParameterException("stream data request is empty"));
}
Review Comment:
Error message starting letter could be uppercase, and also other ones
##########
proxy/frontend/core/src/main/java/org/apache/shardingsphere/proxy/frontend/netty/CDCChannelInboundHandler.java:
##########
@@ -165,59 +168,49 @@ private String getHostAddress(final ChannelHandlerContext
context) {
private void processStreamDataRequest(final ChannelHandlerContext ctx,
final CDCRequest request, final CDCConnectionContext connectionContext) {
if (!request.hasStreamDataRequestBody()) {
-
ctx.writeAndFlush(CDCResponseGenerator.failed(request.getRequestId(),
CDCResponseErrorCode.ILLEGAL_REQUEST_ERROR, "Miss stream data request body"));
- return;
+ throw CDCExceptionWrapper.wrapper(request.getRequestId(), new
PipelineInvalidParameterException("stream data request body is empty"));
}
StreamDataRequestBody requestBody = request.getStreamDataRequestBody();
if (requestBody.getDatabase().isEmpty()) {
-
ctx.writeAndFlush(CDCResponseGenerator.failed(request.getRequestId(),
CDCResponseErrorCode.ILLEGAL_REQUEST_ERROR, "database not allowed to be
empty"));
- return;
+ throw CDCExceptionWrapper.wrapper(request.getRequestId(), new
PipelineInvalidParameterException("database is empty"));
}
if (requestBody.getSourceSchemaTableList().isEmpty()) {
-
ctx.writeAndFlush(CDCResponseGenerator.failed(request.getRequestId(),
CDCResponseErrorCode.ILLEGAL_REQUEST_ERROR, "Illegal stream data request
parameter"));
- return;
+ throw CDCExceptionWrapper.wrapper(request.getRequestId(), new
PipelineInvalidParameterException("stream data request is empty"));
}
Review Comment:
Error message doesn't match the if condition block
##########
kernel/data-pipeline/cdc/core/src/main/java/org/apache/shardingsphere/data/pipeline/cdc/exception/CDCExceptionWrapper.java:
##########
@@ -0,0 +1,45 @@
+/*
+ * 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.shardingsphere.data.pipeline.cdc.exception;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import
org.apache.shardingsphere.infra.util.exception.external.sql.ShardingSphereSQLException;
+
+/**
+ * CDC exception wrapper.
+ */
+@RequiredArgsConstructor
+@Getter
+public final class CDCExceptionWrapper extends RuntimeException {
+
+ private final String requestId;
+
+ private final ShardingSphereSQLException exception;
+
+ /**
+ * Wrapper the exception.
+ *
+ * @param requestId request id
+ * @param exception ShardingSphereCDCException
+ * @return Wrapped ShardingSphereCDCException
+ */
+ public static CDCExceptionWrapper wrapper(final String requestId, final
ShardingSphereSQLException exception) {
+ return new CDCExceptionWrapper(requestId, exception);
+ }
Review Comment:
`wrapper` method is not required, we could use constructor
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