MB-21190: cbepctl support to change max_cas

The initial version of this commit blocks *all* set commands
as it required they all pass a vbucket-id even when not
required.

This update means that changing max_cas is done via

 cbepctl set_vbucket_param

That command requires the vbucket-id.

This commit changes (reverts) to not requiring the extra CLI argument.

 cbepctl set

Change-Id: I04b8b607ccfbc56bca46fe55ca0360f0fe7874ef
Reviewed-on: http://review.couchbase.org/68736
Reviewed-by: Dave Rigby <[email protected]>
Tested-by: buildbot <[email protected]>

Author: jimwwalker

management/cbepctl

@@ -41,7 +41,7 @@ def cmd(f):
     return g
 
 @cmd
-def set_param(mc, type, key, val, vbucket):
+def set_param(mc, type, key, val):
     engine_param = None
     if type == 'checkpoint_param':
         engine_param = memcacheConstants.ENGINE_PARAM_CHECKPOINT
@@ -74,6 +74,20 @@ def set_param(mc, type, key, val, vbucket):
             _quota_ = int(mc.stats()['ep_max_size'])
             val = str(int(float(_x_)*(_quota_)/100))
 
+    try:
+        mc.set_param(0, key, val, engine_param)
+        print 'set %s to %s' %(key, val)
+    except mc_bin_client.MemcachedError, error:
+        print 'Error: %s' % error.msg
+    except mc_bin_client.TimeoutError, error:
+        print error
+    except Exception, e:
+        print 'Generic error (%s)' % e
+
+@cmd
+def set_vbucket_param(mc, key, vbucket, val):
+    engine_param = memcacheConstants.ENGINE_PARAM_VBUCKET
+
     try:
         mc.set_param(int(vbucket), key, val, engine_param)
         print 'set %s to %s' %(key, val)
@@ -250,16 +264,18 @@ Available params for "set":
     dcp_consumer_process_buffered_messages_batch_size - The number of items the
                                                         DCP processor will consume
                                                         in a single batch.
-  Available params for "set vbucket_param":
+
+Available params for "set_vbucket_param:
     max_cas - Change the max_cas of a vbucket. The value and vbucket are specified as decimal
               integers. The new-value is interpretted as an unsigned 64-bit integer.
 
-              cbepctl host:port -b default set vbucket_param max_cas <new-value> <vbucket-id>
+              cbepctl host:port -b default set_vbucket_param max_cas <vbucket-id> <new-value>
 
     """)
 
     c.addCommand('drain', drain, "drain")
-    c.addCommand('set', set_param, 'set type param value vbucket')
+    c.addCommand('set', set_param, 'set type param value')
+    c.addCommand('set_vbucket_param', set_vbucket_param, 'type vbucket value')
     c.addCommand('start', start, 'start')
     c.addCommand('stop', stop, 'stop')
     c.addFlag('-a', 'allBuckets', 'iterate over all buckets (requires admin u/p)')