Move Ceph pool/volume list assembly to thread pool

Same reasons as the VM list, though less impactful.

daemon-common/ceph.py

@@ -25,6 +25,8 @@ import json
 import time
 import math
 
+from concurrent.futures import ThreadPoolExecutor
+
 import daemon_lib.vm as vm
 import daemon_lib.common as common
 
@@ -413,24 +415,36 @@ def remove_pool(zkhandler, name):
 
 
 def get_list_pool(zkhandler, limit, is_fuzzy=True):
-    pool_list = []
     full_pool_list = zkhandler.children('base.pool')
 
     if limit:
         if not is_fuzzy:
             limit = '^' + limit + '$'
 
+    get_pool_info = dict()
     for pool in full_pool_list:
+        is_limit_match = False
         if limit:
             try:
                 if re.match(limit, pool):
-                    pool_list.append(getPoolInformation(zkhandler, pool))
+                    is_limit_match = True
             except Exception as e:
                 return False, 'Regex Error: {}'.format(e)
         else:
-            pool_list.append(getPoolInformation(zkhandler, pool))
+            is_limit_match = True
 
-    return True, sorted(pool_list, key=lambda x: int(x['stats']['id']))
+        get_pool_info[pool] = True if is_limit_match else False
+
+    pool_execute_list = [pool for pool in full_pool_list if get_pool_info[pool]]
+    pool_data_list = list()
+    with ThreadPoolExecutor(max_workers=32, thread_name_prefix='pool_list') as executor:
+        futures = []
+        for pool in pool_execute_list:
+            futures.append(executor.submit(getPoolInformation, zkhandler, pool))
+        for future in futures:
+            pool_data_list.append(future.result())
+
+    return True, sorted(pool_data_list, key=lambda x: int(x['stats']['id']))
 
 
 #
@@ -652,7 +666,6 @@ def unmap_volume(zkhandler, pool, name):
 
 
 def get_list_volume(zkhandler, pool, limit, is_fuzzy=True):
-    volume_list = []
     if pool and not verifyPool(zkhandler, pool):
         return False, 'ERROR: No pool with name "{}" is present in the cluster.'.format(pool)
 
@@ -668,18 +681,36 @@ def get_list_volume(zkhandler, pool, limit, is_fuzzy=True):
             if not re.match(r'.*\$', limit):
                 limit = limit + '.*'
 
+    get_volume_info = dict()
     for volume in full_volume_list:
         pool_name, volume_name = volume.split('/')
+        is_limit_match = False
+
+        # Check on limit
         if limit:
+            # Try to match the limit against the volume name
             try:
                 if re.match(limit, volume_name):
-                    volume_list.append(getVolumeInformation(zkhandler, pool_name, volume_name))
+                    is_limit_match = True
             except Exception as e:
                 return False, 'Regex Error: {}'.format(e)
         else:
-            volume_list.append(getVolumeInformation(zkhandler, pool_name, volume_name))
+            is_limit_match = True
 
-    return True, sorted(volume_list, key=lambda x: str(x['name']))
+        get_volume_info[volume] = True if is_limit_match else False
+
+    # Obtain our volume data in a thread pool
+    volume_execute_list = [volume for volume in full_volume_list if get_volume_info[volume]]
+    volume_data_list = list()
+    with ThreadPoolExecutor(max_workers=32, thread_name_prefix='volume_list') as executor:
+        futures = []
+        for volume in volume_execute_list:
+            pool_name, volume_name = volume.split('/')
+            futures.append(executor.submit(getVolumeInformation, zkhandler, pool_name, volume_name))
+        for future in futures:
+            volume_data_list.append(future.result())
+
+    return True, sorted(volume_data_list, key=lambda x: str(x['name']))
 
 
 #