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Update parallel_emerge to retry when we encounter DNS errors.

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BUG=chromium-os:7049
TEST=Tested that DNS errors are retried. Also tested that 404 errors are not retried.

Change-Id: I0f38764e7af822f7db554697b9fa84af033bf111

Review URL: http://codereview.chromium.org/3473017
This commit is contained in:
David James 2010-09-24 21:55:33 -07:00
parent 358b738f63
commit 1a6b812cf0
1 changed files with 27 additions and 4 deletions
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31
parallel_emerge
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@ -924,16 +924,38 @@ class DepGraphGenerator(object):
if not binhost_url:
return {}
url = binhost_url + "/Packages"
def retry_urlopen(url, tries=3):
"""Open the specified url, retrying if we run into network errors.
prebuilt_pkgs = {}
We do not retry for HTTP errors.
Args:
url: The specified url.
tries: The number of times to try.
Returns:
The result of urllib2.urlopen(url).
"""
for i in range(tries):
try:
return urllib2.urlopen(url)
except urllib2.HTTPError as e:
raise
except urllib2.URLError as e:
if i + 1 == tries:
raise
else:
print "Cannot GET %s: %s" % (url, e)
url = binhost_url + "/Packages"
try:
f = urllib2.urlopen(url)
f = retry_urlopen(url)
except urllib2.HTTPError as e:
if e.code == 404:
return {}
else:
raise
prebuilt_pkgs = {}
for line in f:
if line.startswith("CPV: "):
pkg = line.replace("CPV: ", "").rstrip()
@ -1144,7 +1166,8 @@ class DepGraphGenerator(object):
local_pkgs = LocalPackageDatabase()
remote_pkgs = {}
if "--getbinpkg" in emerge.opts:
remote_pkgs = RemotePackageDatabase(emerge.settings["PORTAGE_BINHOST"])
binhost = emerge.settings["PORTAGE_BINHOST"]
remote_pkgs = RemotePackageDatabase(binhost)
AutoRebuildDeps(local_pkgs, remote_pkgs, cycles)
# We need to remove installed packages so that we can use the dependency