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Jean-Paul Smets
slapos
Commits
8787716d
Commit
8787716d
authored
Oct 20, 2016
by
Nicolas Wavrant
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librecipe: new function in GenericBaseRecipe to get value from previous buildout run
parent
203ffbfa
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slapos/recipe/librecipe/generic.py
slapos/recipe/librecipe/generic.py
+16
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slapos/recipe/librecipe/generic.py
View file @
8787716d
...
...
@@ -26,6 +26,7 @@
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
##############################################################################
import
ConfigParser
import
io
import
logging
import
os
...
...
@@ -280,3 +281,18 @@ class GenericBaseRecipe(object):
except
:
shutil
.
rmtree
(
destination
)
raise
def
getValueFromPreviousRun
(
self
,
section
,
parameter
):
"""
Returns the value of a parameter from a previous run, if it exists.
Otherwise, returns None
"""
if
os
.
path
.
exists
(
self
.
buildout
[
'buildout'
][
'installed'
]):
with
open
(
self
.
buildout
[
'buildout'
][
'installed'
])
as
config_file
:
try
:
parser
=
ConfigParser
.
RawConfigParser
()
parser
.
readfp
(
config_file
)
return
parser
.
get
(
section
,
parameter
)
except
:
pass
return
None
\ No newline at end of file
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