[fix][admin] Clearly define REST API on Open API for Topics (apache#2…

…2782)

(cherry picked from commit c25d7b2)
(cherry picked from commit 08ed1e2)

pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/v2/NonPersistentTopics.java

@@ -52,8 +52,10 @@
 import org.apache.pulsar.broker.service.Topic;
 import org.apache.pulsar.broker.web.RestException;
 import org.apache.pulsar.common.naming.TopicName;
+import org.apache.pulsar.common.partition.PartitionedTopicMetadata;
 import org.apache.pulsar.common.policies.data.EntryFilters;
 import org.apache.pulsar.common.policies.data.NamespaceOperation;
+import org.apache.pulsar.common.policies.data.PersistentTopicInternalStats;
 import org.apache.pulsar.common.policies.data.Policies;
 import org.apache.pulsar.common.policies.data.TopicOperation;
 import org.apache.pulsar.common.policies.data.TopicStats;
@@ -74,7 +76,7 @@ public class NonPersistentTopics extends PersistentTopics {
 
     @GET
     @Path("/{tenant}/{namespace}/{topic}/partitions")
-    @ApiOperation(value = "Get partitioned topic metadata.")
+    @ApiOperation(value = "Get partitioned topic metadata.", response = PartitionedTopicMetadata.class)
     @ApiResponses(value = {
             @ApiResponse(code = 307, message = "Current broker doesn't serve the namespace of this topic"),
             @ApiResponse(code = 401, message = "Don't have permission to manage resources on this tenant"),
@@ -102,7 +104,7 @@ public void getPartitionedMetadata(
 
     @GET
     @Path("{tenant}/{namespace}/{topic}/internalStats")
-    @ApiOperation(value = "Get the internal stats for the topic.")
+    @ApiOperation(value = "Get the internal stats for the topic.", response = PersistentTopicInternalStats.class)
     @ApiResponses(value = {
             @ApiResponse(code = 307, message = "Current broker doesn't serve the namespace of this topic"),
             @ApiResponse(code = 401, message = "Don't have permission to manage resources on this tenant"),
@@ -145,6 +147,7 @@ public void getInternalStats(
     @ApiOperation(value = "Create a partitioned topic.",
             notes = "It needs to be called before creating a producer on a partitioned topic.")
     @ApiResponses(value = {
+            @ApiResponse(code = 204, message = "Operation successful"),
             @ApiResponse(code = 307, message = "Current broker doesn't serve the namespace of this topic"),
             @ApiResponse(code = 401, message = "Don't have permission to manage resources on this tenant"),
             @ApiResponse(code = 403, message = "Don't have admin permission"),
@@ -306,6 +309,7 @@ public void getPartitionedStats(
     @Path("/{tenant}/{namespace}/{topic}/unload")
     @ApiOperation(value = "Unload a topic")
     @ApiResponses(value = {
+            @ApiResponse(code = 204, message = "Operation successful"),
             @ApiResponse(code = 307, message = "Current broker doesn't serve the namespace of this topic"),
             @ApiResponse(code = 401, message = "This operation requires super-user access"),
             @ApiResponse(code = 403, message = "Don't have admin permission"),
@@ -491,6 +495,7 @@ public void getListFromBundle(
     @ApiOperation(value = "Truncate a topic.",
             notes = "NonPersistentTopic does not support truncate.")
     @ApiResponses(value = {
+            @ApiResponse(code = 204, message = "Operation successful"),
             @ApiResponse(code = 412, message = "NonPersistentTopic does not support truncate.")
     })
     public void truncateTopic(
@@ -514,7 +519,7 @@ protected void validateAdminOperationOnTopic(TopicName topicName, boolean author
 
     @GET
     @Path("/{tenant}/{namespace}/{topic}/entryFilters")
-    @ApiOperation(value = "Get entry filters for a topic.")
+    @ApiOperation(value = "Get entry filters for a topic.", response = EntryFilters.class)
     @ApiResponses(value = { @ApiResponse(code = 403, message = "Don't have admin permission"),
             @ApiResponse(code = 404, message = "Tenants or Namespace doesn't exist") })
     public void getEntryFilters(@Suspended AsyncResponse asyncResponse,
@@ -542,7 +547,9 @@ public void getEntryFilters(@Suspended AsyncResponse asyncResponse,
     @POST
     @Path("/{tenant}/{namespace}/{topic}/entryFilters")
     @ApiOperation(value = "Set entry filters for specified topic")
-    @ApiResponses(value = {@ApiResponse(code = 403, message = "Don't have admin permission"),
+    @ApiResponses(value = {
+            @ApiResponse(code = 204, message = "Operation successful"),
+            @ApiResponse(code = 403, message = "Don't have admin permission"),
             @ApiResponse(code = 404, message = "Tenant or namespace or topic doesn't exist"),
             @ApiResponse(code = 405,
                     message = "Topic level policy is disabled, please enable the topic level policy and retry"),
@@ -570,7 +577,9 @@ public void setEntryFilters(@Suspended final AsyncResponse asyncResponse,
     @DELETE
     @Path("/{tenant}/{namespace}/{topic}/entryFilters")
     @ApiOperation(value = "Remove entry filters for specified topic.")
-    @ApiResponses(value = {@ApiResponse(code = 403, message = "Don't have admin permission"),
+    @ApiResponses(value = {
+            @ApiResponse(code = 204, message = "Operation successful"),
+            @ApiResponse(code = 403, message = "Don't have admin permission"),
             @ApiResponse(code = 404, message = "Tenant or namespace or topic doesn't exist"),
             @ApiResponse(code = 405,
                     message = "Topic level policy is disabled, please enable the topic level policy and retry"),