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"""acessing the tinderbox at http://qa-reports.gentoo.org/output/genrdeps/rindex/ """
import socket # For setting a global timeout
# Support python2 and python3 versions of urllib:
try:
from urllib2 import urlopen, HTTPError
except:
from urllib.request import urlopen
from urllib.error import HTTPError
import sys
from subprocess import *
import random
from .gentooPackage import gentooPackage as gP
from portage.dep import isvalidatom
## TODO: Make the number of rdeps to sample a config option
## Pass the config on to this function:
## Generate stable rdeps ###
def stablerdeps (atom, config):
"""
Find packages with stable versions which depend on atom
We query the tinderbox at http://qa-reports.gentoo.org/output/genrdeps/rindex/
for this purpose.
The result is a list of pairs of package atoms and a list of necessary useflags
"""
tinderbox = config['tinderbox-url']
# File structure on this tinderbox equals that in the tree
# Problem: The rdeps can be version dependent
# nothing we can do about this here...
socket.setdefaulttimeout(45)
try:
download = urlopen(tinderbox + atom).read().decode('utf-8')
except HTTPError as e:
# Cleanup the timeout:
socket.setdefaulttimeout(None)
if e.code == 404:
# 404 is OK, the package has no stable rdeps
return []
else:
# Some other error should not occur:
print("Non 404 Error on accessing the tinderbox")
sys.exit (1)
# If we are here everything is fine, cleanup the timeout:
socket.setdefaulttimeout(None)
# The result is a "\n" separated list of packages : useflags
packlist = download.rstrip().split("\n")
# Split at : to see if useflags are necessary
splitlist2 = [p.split(":") for p in packlist]
# Fill with empty useflags if nothing is given:
splitlist = []
for s in splitlist2:
if len(s) == 1:
splitlist.append([s[0],[" "]])
else:
splitlist.append([s[0],s[1].split("+")])
d = dict([])
for s in splitlist:
# Saves necessary useflags under package names, removing duplicates.
if isvalidatom('=' + s[0]):
d[gP(s[0]).packageCatName()] = s[1]
outlist2 = [[k, d[k]] for k in list(d.keys())]
outlist = []
# outlist2 is set up at this point. It contains all candidates. To cut it down we sample
# randomly without replacement until the list is empty or we have config['rdeps'] many.
# We are calling eix for each package to work around issues with --stable:
# What we should do with a future version of eix is to do this in a single run
# or fork multiple eix instances
while ((len (outlist2) > 0) and (len(outlist) < config['rdeps'])):
# Warning: sample returns a list, even if only one sample
[samp]=random.sample(outlist2, 1)
# Drop the one we selected
outlist2.remove(samp)
eixcall = ["eix", "--stable", "--only-names", "--exact", samp[0]]
p2 = Popen(eixcall, stdout=PIPE)
out = p2.communicate()[0].decode('utf-8')
if out == '': continue
else : outlist.append(samp)
if len(outlist2) > 0:
print("More than " + str(config['rdeps']) + " stable rdeps for " + atom + ", took a sample. \n")
return outlist
#############################
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