Merge pull request #429 from wdurairaj/auto_schedule_name_generate

Fix duplicate schedule name when -o scheduleName is passed in SC (issue #390)

config/create_help.txt

@@ -119,6 +119,9 @@ Create Snapshot Schedule:
                                 3. To create snapshot every quarter, specify x as "0 * * 3,6,9,12 *"
                                 4. To create snapshot on Monday, Wednesday and Friday, specify x as "0 * * * 1,3,5"
 -o scheduleName=x               This option is mandatory. x is a string which indicates name for the schedule on 3PAR.
+                                Note: When this parameter is passed with string 'auto' , then the scheduleName is
+                                auto generated with a timestamp. This is to support kubernetes environment where 
+                                this parameter can be used as a storage class option.
 -o snapshotPrefix=x             This option is mandatory. x is prefix string for the scheduled snapshots which will get created on 3PAR.
                                 It is recommended to use 3 letter string. If prefix is abc then name of the snapshot which gets created on the 3PAR
                                 will be in the format abc.@y@@m@@d@@H@@M@@S@

hpedockerplugin/hpe_storage_api.py

@@ -19,6 +19,7 @@
 """
 import json
 import six
+import datetime
 
 from oslo_log import log as logging
 
@@ -608,6 +609,9 @@ def volumedriver_create_snapshot(self, name, mount_conflict_delay,
                     response = json.dumps({'Err': msg})
                     return response
                 schedName = str(contents['Opts']['scheduleName'])
+                if schedName == "auto":
+                    schedName = self.generate_schedule_with_timestamp()
+
                 snapPrefix = str(contents['Opts']['snapshotPrefix'])
 
                 schedNameLength = len(schedName)
@@ -635,6 +639,16 @@ def volumedriver_create_snapshot(self, name, mount_conflict_delay,
                                                  has_schedule,
                                                  schedFrequency)
 
+    def generate_schedule_with_timestamp(self):
+        current_time = datetime.datetime.now()
+        current_time_str = str(current_time)
+        space_replaced = current_time_str.replace(' ', '_')
+        colon_replaced = space_replaced.replace(':', '_')
+        hypen_replaced = colon_replaced.replace('-', '_')
+        scheduleNameGenerated = hypen_replaced
+        LOG.info(' Schedule Name auto generated is %s' % scheduleNameGenerated)
+        return scheduleNameGenerated
+
     @app.route("/VolumeDriver.Mount", methods=["POST"])
     def volumedriver_mount(self, name):
         """