mgao0 commented on a change in pull request #849: Add REST APIs for get, set,
update RestConfig
URL: https://github.com/apache/helix/pull/849#discussion_r388491619
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File path:
helix-rest/src/main/java/org/apache/helix/rest/server/resources/helix/ClusterAccessor.java
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@@ -511,6 +512,89 @@ public Response
removeClusterStateModelDefinition(@PathParam("clusterId") String
return OK();
}
+ @PUT
+ @Path("{clusterId}/restconfig")
+ public Response createClusterRESTConfig(@PathParam("clusterId") String
clusterId,
+ String content) {
+ ZNRecord record;
+ try {
+ record = toZNRecord(content);
+ } catch (IOException e) {
+ _logger.error("Failed to deserialize user's input " + content + ",
Exception: " + e);
+ return badRequest("Input is not a valid ZNRecord!");
+ }
+
+ if (!record.getId().equals(clusterId)) {
+ return badRequest("ID does not match the cluster name in input!");
+ }
+
+ RESTConfig config = new RESTConfig(record);
+ ConfigAccessor configAccessor = getConfigAccessor();
+ try {
+ configAccessor.setRESTConfig(clusterId, config);
+ } catch (HelixException ex) {
+ return notFound(ex.getMessage());
Review comment:
I checked, all the exceptions are caught in
ZKUtil.createOrMerge/Replace/Update, and only log the errors, including the
write failure or other types of errors. Only one case would throw
HelixException which is ZKUtil.isClusterSetup(clusterName, _zkClient) returns
false, so I used the notFound response type. Please let me know if you still
think it is an issue and we should fix it some other way. Thanks.
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