shounakmk219 commented on code in PR #11077:
URL: https://github.com/apache/pinot/pull/11077#discussion_r1270527540
##########
pinot-controller/src/main/java/org/apache/pinot/controller/api/resources/PinotInstanceRestletResource.java:
##########
@@ -416,4 +422,112 @@ public List<OperationValidationResponse>
instanceDropSafetyCheck(
Response.Status.INTERNAL_SERVER_ERROR, e);
}
}
+
+ @POST
+ @Path("/instances/updateTags/validate")
+ @Produces(MediaType.APPLICATION_JSON)
+ @ApiOperation(value = "Check if it's safe to update the tags of the given
instances. If not list all the reasons.")
+ @ApiResponses(value = {
+ @ApiResponse(code = 200, message = "Success"),
+ @ApiResponse(code = 500, message = "Internal error")
+ })
+ public List<OperationValidationResponse>
instanceTagUpdateSafetyCheck(List<InstanceTagUpdateRequest> instances) {
+ LOGGER.info("Performing safety check on tag update request received for
instances: {}",
+
instances.stream().map(InstanceTagUpdateRequest::getInstanceName).collect(Collectors.toList()));
+ Map<String, Integer> tagMinServerMap =
_pinotHelixResourceManager.minimumInstancesRequiredForTags();
+ Map<String, Integer> tagDeficiency = computeTagDeficiency(instances,
tagMinServerMap);
+
+ Map<String, List<OperationValidationResponse.ErrorWrapper>> responseMap =
new HashMap<>(instances.size());
+ List<OperationValidationResponse.ErrorWrapper> tenantIssues = new
ArrayList<>();
+ instances.forEach(instance -> responseMap.put(instance.getInstanceName(),
new ArrayList<>()));
+ for (InstanceTagUpdateRequest instance : instances) {
+ String name = instance.getInstanceName();
+ Set<String> oldTags;
+ try {
+ oldTags = new
HashSet<>(_pinotHelixResourceManager.getTagsForInstance(name));
+ } catch (NullPointerException exception) {
+ throw new ControllerApplicationException(LOGGER,
+ String.format("Instance %s is not a valid instance name.", name),
Response.Status.PRECONDITION_FAILED);
+ }
+ Set<String> newTags = new HashSet<>(instance.getNewTags());
+ // tags removed from instance
+ for (String tag : Sets.difference(oldTags, newTags)) {
Review Comment:
That's correct. Its mostly aimed to act as a prerequisite to the
`/instances/{instanceName}/updateTags` endpoint so that user can validate the
operation safety before performing the actual updateTags operation.
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