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| author | Johannes 'josch' Schauer <josch@mister-muffin.de> | 2016-02-11 12:48:50 +0100 |
|---|---|---|
| committer | Holger Levsen <holger@layer-acht.org> | 2016-02-11 12:58:48 +0100 |
| commit | eaf9e2074edf4a0d3ce93744431351305deba1e1 (patch) | |
| tree | 8254292bbee9622f16c76b9b76fd5104deb09c35 /bin/find_dpkg_trigger_cycles.sh | |
| parent | 73e9aa8e2bcd78e2f29d726e0af21a106fcdf6db (diff) | |
| download | jenkins.debian.net-eaf9e2074edf4a0d3ce93744431351305deba1e1.tar.xz | |
bin/find_dpkg_trigger_cycles.sh: add comment to explain curl usage in pipeline
Diffstat (limited to 'bin/find_dpkg_trigger_cycles.sh')
| -rwxr-xr-x | bin/find_dpkg_trigger_cycles.sh | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/bin/find_dpkg_trigger_cycles.sh b/bin/find_dpkg_trigger_cycles.sh index 12c02c71..14416a84 100755 --- a/bin/find_dpkg_trigger_cycles.sh +++ b/bin/find_dpkg_trigger_cycles.sh @@ -176,6 +176,15 @@ curl --retry 3 --retry-delay 10 --globoff "http://binarycontrol.debian.net/?q=&p | while read pkg url; do echo "working on $pkg..." >&2 tmpdir=`mktemp -d --tmpdir="$scratch" -t dpkg-trigger-cycles-curl-XXXXXXXX` + # we use curl as part of a pipeline to dpkg-deb instead of first + # downloading to a temporary file and then using dpkg-deb on it, + # because we do not want to download the full .deb (which could be very + # large) but only the beginning of it until dpkg-deb has the + # control.tar.gz extracted. After that, dpkg-deb will close the pipe + # and thus signal curl to stop downloading. Downloading the full + # binary package would be unnecessarily wasteful thousands of binary + # packages in terms of bandwidth and disk requirements. + # # curl is allowed to fail with exit status 23 because we want to stop # downloading immediately after control.tar.gz has been extracted ( curl --retry 3 --retry-delay 10 --location --silent "$url" || [ "$?" -eq 23 ] || ( echo "curl failed">&2 && exec /srv/jenkins/bin/abort.sh ) ) \ |