[ADMIN_API] Adjusting worker messages

Changing PING back to STATS and STATS to METRICS to simplify deployments

Change-Id: I959f968a9a298c66b7e4fbfa6b6818acd95d8718

libra/admin_api/__init__.py

@@ -103,14 +103,14 @@ cfg.CONF.register_opts(
         cfg.IntOpt('stats_freq',
                    metavar='MINUTES',
                    default=5,
-                   help='Minutes between sending STATS requests to workers'),
+                   help='Minutes between collecting usage statistics'),
         cfg.BoolOpt('stats_purge_enable',
                     default=False,
                     help='Enable / Disable purging of usage statistics'),
         cfg.IntOpt('stats_purge_days',
                    metavar='DAYS',
                    default=5,
-                   help='Number of days to keep usage STATS before purging'),
+                   help='Number of days to keep usage statistics'),
         cfg.IntOpt('delete_timer_seconds',
                    default=5,
                    help='Which second of each minute delete timer should run'),
@@ -119,7 +119,7 @@ cfg.CONF.register_opts(
                    help='Second of each minute ping timer should run'),
         cfg.IntOpt('stats_timer_seconds',
                    default=20,
-                   help='Second of each minute stats timer should run'),
+                   help='Second of each minute statistics timer should run'),
         cfg.IntOpt('usage_timer_seconds',
                    default=25,
                    help='Which second of each minute usage timer should run'),

libra/admin_api/stats/stats_gearman.py

@@ -47,7 +47,9 @@ class GearJobs(object):
         failed_list = []
         node_status = dict()
         retry_list = []
-        job_data = {"hpcs_action": "PING"}
+        # The message name is STATS for historical reasons. Real
+        # data statistics are gathered with METRICS messages.
+        job_data = {"hpcs_action": "STATS"}
         for node in node_list:
             list_of_jobs.append(dict(task=str(node), data=job_data))
         submitted_pings = self.gm_client.submit_multiple_jobs(
@@ -150,7 +152,7 @@ class GearJobs(object):
         failed_list = []
         retry_list = []
         results = {}
-        job_data = {"hpcs_action": "STATS"}
+        job_data = {"hpcs_action": "METRICS"}
         for node in node_list:
             list_of_jobs.append(dict(task=str(node), data=job_data))
         submitted_stats = self.gm_client.submit_multiple_jobs(
@@ -174,7 +176,8 @@ class GearJobs(object):
         list_of_jobs = []
         if len(retry_list) > 0:
             LOG.info(
-                "{0} stats timed out, retrying".format(len(retry_list))
+                "{0} Statistics gathering timed out, retrying".
+                format(len(retry_list))
             )
             for node in retry_list:
                 list_of_jobs.append(dict(task=str(node), data=job_data))
@@ -186,8 +189,8 @@ class GearJobs(object):
                 if stats.state == JOB_UNKNOWN:
                     # TODO: Gearman server failed, ignoring for now
                     LOG.error(
-                        "Gearman Job server failed during STATS check of {0}".
+                        "Gearman Job server failed gathering statistics "
-                        format(stats.job.task)
+                        "on {0}".format(stats.job.task)
                     )
                     failed_list.append(stats.job.task)
                 elif stats.timed_out:

libra/admin_api/stats/stats_sched.py

@@ -182,13 +182,13 @@ class UsageStats(object):
                 data = self._get_lb(device_name, session)
                 if not data:
                     LOG.error(
-                        'Device {0} has no Loadbalancer attached during STATS'.
+                        'Device {0} has no Loadbalancer attached during '
-                        format(device_name)
+                        'statistics gathering'.format(device_name)
                     )
                     continue
 
                 LOG.error(
-                    'Load balancer failed STATS request '
+                    'Load balancer failed statistics gathering request '
                     'ID: {0}\n'
                     'IP: {1}\n'
                     'tenant: {2}\n'.format(

libra/common/api/gearman_client.py

@@ -33,8 +33,8 @@ gearman_workers = [
     'DELETE',  # Delete a Load Balancer.
     'DISCOVER',  # Return service discovery information.
     'ARCHIVE',  # Archive LB log files.
-    'STATS',  # Get load balancer statistics.
+    'METRICS',  # Get load balancer statistics.
-    'PING'    # Ping load balancers
+    'STATS'     # Ping load balancers
 ]