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nexedi
slapos
Commits
7b2441f4
Commit
7b2441f4
authored
Nov 19, 2012
by
Marco Mariani
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new renaming logic
parent
d44ce5f5
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45 additions
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14 deletions
+45
-14
slapos/recipe/addresiliency/bully.py
slapos/recipe/addresiliency/bully.py
+45
-14
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slapos/recipe/addresiliency/bully.py
View file @
7b2441f4
...
...
@@ -43,29 +43,60 @@ class Renamer(object):
def
_failover
(
self
):
"""
\
This method does
- retrieve the broken computer partition
- change its reference to 'broken-...' and its software type to 'frozen'
- retrieve the winner computer partition (attached to this process)
- change its reference and software type to replace the broken one
Then, after running slapgrid-cp a few times, the winner takes over and
a new cp is created to replace it as an importer.
"""
# TODO: replace hardcoded strings with values from the API
slap
=
slapmodule
.
slap
()
slap
.
initializeConnection
(
self
.
server_url
,
self
.
key_file
,
self
.
cert_file
)
# partition that will take over
cp
=
slap
.
registerComputerPartition
(
computer_guid
=
self
.
computer_guid
,
partition_id
=
self
.
partition_id
)
# partition that will take over.
cp_winner
=
slap
.
registerComputerPartition
(
computer_guid
=
self
.
computer_guid
,
partition_id
=
self
.
partition_id
)
# XXX although we can already rename cp_winner, to change its software type we need to
# get hold of the root cp as well
root_partition_id
=
'slappart0'
# XXX hardcoded. what's the API for this?
cp_root
=
slap
.
registerComputerPartition
(
computer_guid
=
self
.
computer_guid
,
partition_id
=
root_partition_id
)
cp_
old_name
=
self
.
namebase
+
'0'
cp_
exporter_ref
=
self
.
namebase
+
'0'
# this is ok. the boss is always number zero.
# partition to be deactivated
broken
=
cp
.
request
(
software_release
=
self
.
software_release
,
software_type
=
'frozen'
,
partition_reference
=
cp_old_name
)
cp_broken
=
cp_root
.
request
(
software_release
=
self
.
software_release
,
software_type
=
'frozen'
,
partition_reference
=
cp_exporter_ref
)
broken_new_ref
=
'broken-{}'
.
format
(
time
.
strftime
(
"%d-%b_%H:%M:%S"
,
time
.
gmtime
()))
# XXX can we retrieve and log the old reference name?
log
.
debug
(
"Renaming {}: {}"
.
format
(
cp_broken
.
getId
(),
broken_new_ref
))
cp_broken
.
rename
(
new_name
=
broken_new_ref
)
cp_broken
.
stopped
()
log
.
debug
(
"Renaming {}: {}"
.
format
(
cp_broken
.
getId
(),
cp_exporter_ref
))
# update software type and name for the partition that will take over
broken_new_name
=
'broken-{}'
.
format
(
time
.
strftime
(
"%d-%b_%H:%M:%S"
,
time
.
gmtime
()))
# XXX how can we retrieve and log the old name?
log
.
debug
(
"Renaming {}: {}"
.
format
(
broken
.
getId
(),
broken_new_name
))
broken
.
rename
(
broken_new_name
)
cp_winner_ref
=
self
.
namebase
+
'2'
# XXX hardcoded. what's the API for this?
broken
.
stopped
()
cp_root
.
request
(
software_release
=
self
.
software_release
,
software_type
=
self
.
namebase
+
'-export'
,
partition_reference
=
cp_winner_ref
).
rename
(
new_name
=
cp_exporter_ref
)
log
.
debug
(
"Renaming {}: {}"
.
format
(
cp
.
getId
(),
cp_old_name
))
cp
.
rename
(
cp_old_name
)
def
failover
(
self
):
...
...
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