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_r390030396
##########
File path:
helix-rest/src/main/java/org/apache/helix/rest/server/resources/helix/ClusterAccessor.java
##########
@@ -511,6 +512,125 @@ 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) {
+ // TODO: Could use a more generic error for HelixException
+ return notFound(ex.getMessage());
+ } catch (Exception ex) {
+ _logger.error("Failed to create rest config, cluster " + clusterId + "
new config: " + content
+ + ", Exception: " + ex);
+ return serverError(ex);
+ }
+ return OK();
+ }
+
+ @POST
+ @Path("{clusterId}/restconfig")
+ public Response updateClusterRESTConfig(@PathParam("clusterId") String
clusterId,
+ @QueryParam("command") String commandStr, String content) {
+ Command command;
+ try {
+ command = getCommand(commandStr);
+ } catch (HelixException ex) {
+ return badRequest(ex.getMessage());
+ }
+
+ 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!");
+ }
Review comment:
This check is not imposed on rest config id, this is to check the if the id
of ZNRecord user uses to update the rest config matches the cluster name. I'm
not sure what our users are doing right now, but this could prevent
accidentally update the wrong cluster.
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