euscan: add README, TODO and some scripts
Signed-off-by: Corentin Chary <corentincj@iksaif.net>
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Corentin Chary
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README
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README
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Package: gentoolkit/gentoolkit-dev
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Authors: Aron Griffis <agriffis@gentoo.org>
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Brandon Low <lostlogic@gentoo.org>
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Ian Leitch <port001@gentoo.org>
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Karl Trygve Kalleberg <karltk@gentoo.org>
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Marius Mauch <genone@gentoo.org>
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Paul Varner <fuzzyray@gentoo.org>
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See src/<tool>/AUTHORS for tool-specific authors
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What is euscan ?
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================
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MOTIVATION
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dev-portage/euscan
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------------------
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The gentoolkit and gentoolkit-dev packages contain a collection of useful
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administration scripts particular to the Gentoo Linux distribution. It contains
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rough drafts and implementations of features that may in time make it into
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Portage, or into full-fledged tools in their own right.
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euscan is available in portage as a dev package (app-portage/euscan-9999). This tool allow to check if a given package/ebuild has new upstream versions or not. It will use different heuristic to scan upstream and grab new versions and related urls.
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The gentoolkit-dev package is intended primarily for Gentoo developers.
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This tool was designed to mimic debian's uscan, but there is a major difference between the two: uscan uses a specific "watch" file that describe how it should scan packages, while euscan uses only what can already be found in ebuilds. Of course, we could later add some informations in metadata.xml to help euscan do its job more efficiently.
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CONTENTS
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euscan heuristics are described in the "How does-it works ?" section.
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gentoolkit
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==========
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eclean - tool to clean up outdated distfiles and packages
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equery - replacement for etcat and qpkg
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etcat - extracts auxillary information from portage (deprecated)
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euse - tool to manage USE flags
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glsa-check - tool to manage GLSA's (Gentoo Linux Security Advisory)
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qpkg - convient package query tool (deprecated)
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revdep-rebuild - scans/fixes broken shared libs and binaries
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### Examples
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gentoolkit-dev
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==============
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ebump - Ebuild revision bumper
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echangelog - update portage ChangeLogs
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ego -
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ekeyword - modify package KEYWORDS
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epkgmove - tool for moving and renaming packages in CVS
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eviewcvs - generate viewcvs URLs
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gensync - Overlay Sync Tool
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$ euscan amatch
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IMPROVEMENTS
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* dev-ruby/amatch-0.2.7 [gentoo]
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Any suggestions for improvements should be sent to tools-portage@gentoo.org, or
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added as a bug assigned to us.
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Ebuild: /home/euscan/local/usr/portage/dev-ruby/amatch/amatch-0.2.7.ebuild
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Repository: gentoo
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Homepage: http://flori.github.com/amatch/
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Description: Approximate Matching Extension for Ruby
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* SRC_URI is 'mirror://rubygems/amatch-0.2.7.gem'
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* Using: http://rubygems.org/api/v1/versions/amatch.json
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Upstream Version: 0.2.8 http://rubygems.org/gems/amatch-0.2.8.gem
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$ euscan rsyslog
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* app-admin/rsyslog-5.8.5 [gentoo]
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Ebuild: /home/euscan/local/usr/portage/app-admin/rsyslog/rsyslog-5.8.5.ebuild
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Repository: gentoo
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Homepage: http://www.rsyslog.com/
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Description: An enhanced multi-threaded syslogd with database support and more.
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* SRC_URI is 'http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.8.5.tar.gz'
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* Scanning: http://www.rsyslog.com/files/download/rsyslog/rsyslog-${PV}.tar.gz
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* Scanning: http://www.rsyslog.com/files/download/rsyslog
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* Generating version from 5.8.5
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* Brute forcing: http://www.rsyslog.com/files/download/rsyslog/rsyslog-${PV}.tar.gz
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* Trying: http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.8.6.tar.gz ... [ !! ]
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* Trying: http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.8.7.tar.gz ... [ !! ]
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* Trying: http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.8.8.tar.gz ... [ !! ]
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* Trying: http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.9.0.tar.gz ... [ ok ]
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* Trying: http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.10.0.tar.gz ... [ !! ]
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* Trying: http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.11.0.tar.gz ... [ !! ]
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* Trying: http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.9.1.tar.gz ... [ ok ]
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* Trying: http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.9.2.tar.gz ... [ ok ]
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* Trying: http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.9.3.tar.gz ... [ ok ]
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* Trying: http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.12.0.tar.gz ... [ !! ]
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* Trying: http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.9.4.tar.gz ... [ !! ]
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* Trying: http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.9.5.tar.gz ... [ !! ]
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* Trying: http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.9.6.tar.gz ... [ !! ]
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Upstream Version: 5.9.1 http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.9.1.tar.gz
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Upstream Version: 5.9.0 http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.9.0.tar.gz
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Upstream Version: 5.9.3 http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.9.3.tar.gz
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Upstream Version: 5.9.2 http://www.rsyslog.com/files/download/rsyslog/rsyslog-5.9.2.tar.gz
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### Hidden settings
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You can configure some settings using the command line, but the __init__.py file of the euscan package contains more settings, including blacklists and default settings.
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Maybe we should add the ability to use /etc/euscan.conf and ~/.config/euscan/euscan.conf to override these settings.
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euscan-www: euscan as a service
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-------------------------------
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euscan-www is a web application that aggregates euscan results. For example there is an instance of euscan-www that monitors gentoo-x86 + some official overlays currently hosted at http://euscan.iksaif.net/ .
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euscan-www uses django and provides some custom commands to feed the database. You can use euscan-www on you system tree, or preferably you can use a local tree to avoid messing with your system.
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### Installation
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Like any django web app, just start by editing settings.py and then run these two commands.
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$ python manage.py syncdb
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$ python manage.py migrate
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Now your instance is ready, you can just run this command to browse it. If you want to host it publicly you should use a real webserver.
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$ python manage.py runserver
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### Creating a local tree
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Create a local tree with all that portage (and layman would need). There is an example in euscanwww/scripts/local-tree/. See escan-update.sh to know what env variables you need to run any portage related command in this local tree.
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### Scanning process
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The scanning process is done by euscan-update.sh. You should read carefully this script, and adapt it to your needs. For example it uses gparallel to launch multiple process at a time, and you should adapt that to your number of cpu and network bandwith.
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Once your euscan-update.sh is ok, just run it.
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$ sh euscan-update.sh
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### Custom Django management commands
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euscan-www povides some new management commands, here is a short description of these commands. Use "help" or read euscan-update.sh to get more informations.
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#### list-packages
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List packages stored in database.
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#### scan-portage
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Scan the portage tree and store new packages and versions in the database.
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#### scan-metadata.py
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Scan metadata and looks for homepage, maintainers and herds.
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#### scan-upstream
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Scan upstream package. The prefered way to use this script it to first launch euscan on some packages, store the result of the file, and feed this command with the result.
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#### update-counters
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Update statistics and rrd files.
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#### regen-rrds
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If you deleted your rrd files, this script will use the database to regen them.
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How does it work ?
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==================
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euscan has different heuristics to scan upstream and provides multiple "handlers". First, here is a description of the generic handler.
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Scanning directories
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--------------------
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The first thing to do is to scan directories. It's also what uscan do, but it uses a file that describe what url and regexp to use to match packages.
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euscan uses SRC_URI and tries to find the current version (or part of this version) in the resolved SRC_URI and generate a regexp from that.
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For example for app-accessibility/dash-4.10.1, SRC_URI is:
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mirror://gnome/sources/dasher/4.10/dasher-4.10.1.tar.bz2
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euscan will scan pages based on this template:
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http://ftp.gnome.org/pub/gnome/sources/dasher/${0}.${1}/dasher-${PV}.tar.bz2
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Then, from that, it will scan the top-most directory that doesn't depend on the version, and try to go deeper from here.
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Brute force
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-----------
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Like when scanning directories, a template of SRC_URI is built. Then euscan generate next possible version numbers, and tries to download the url generated from the template and the new version number.
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For example, running euscan on portage/app-accessibility/festival-freebsoft-utils-0.6:
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SRC_URI is 'http://www.freebsoft.org/pub/projects/festival-freebsoft-utils/festival-freebsoft-utils-0.6.tar.gz'
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Template is http://www.freebsoft.org/pub/projects/festival-freebsoft-utils/festival-freebsoft-utils-${PV}.tar.gz
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Generate version from 0.6: 0.7, 0.8, 0.10, ...
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Try new urls: http://www.freebsoft.org/pub/projects/festival-freebsoft-utils/festival-freebsoft-utils-0.7.tar.gz, etc..
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Blacklists
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----------
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euscan uses blacklist for multiple purposes.
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### BLACKLIST_VERSIONS
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For versions that should not be checked at all. sys-libs/libstdc++-v3-3.4 is good example because it's a package which version will always be 3.4 (Compatibility package for running binaries linked against a pre gcc 3.4 libstdc++).
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### BLACKLIST_PACKAGES
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Some packages are dead, but SRC_URI refers to sources that are still being updated, for example: sys-kernel/xbox-sources that uses the same sources as vanilla-sources but is not updated the same way.
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### SCANDIR_BLACKLIST_URLS
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For urls that are not browsable. mirror://gentoo/ is a good example: it's both stupid to scan it and very long/expensive.
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### BRUTEFORCE_BLACKLIST_PACKAGES and BRUTEFORCE_BLACKLIST_URLS
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Disable brute force on those packages and urls. Most of the time it's because upstream is broken and will answer HTTP 200 even if the file doesn't exist.
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### ROBOTS_TXT_BLACKLIST_DOMAINS
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Don't respect robots.txt for these domains (sourcefourge, berlios, github.com).
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Site handlers
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-------------
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### Pecl/PEAR
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A site handler that uses the Pecl/PEAR rest API (http://pear.php.net/manual/en/core.rest.php).
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### Rubygems
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This one uses rubygems's json API (http://guides.rubygems.org/rubygems-org-api/)
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### Pypy
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Uses pypy's XML rpc API.
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We only accept new contributions if they are written in bash or python.
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13
TODO
13
TODO
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@ -5,6 +5,7 @@ euscan
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------
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- check other distros (youri)
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- steel ideas from other tools (uscan, portscout)
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Site Handlers
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-------------
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@ -17,7 +18,15 @@ Site Handlers
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euscanwww
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---------
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- add progress options for each command
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- add last scan in the footer
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- add json/xml for each page
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- add json/xml for each page (with a *real* API)
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- rss scan world + post ?
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- add an /about/config page that describe the current config (overlays, stuff in make.conf, euscan default settings, etc..)
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### Scan process
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- Move to celery:
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- periodic task for emerge --sync; layman -S; eix-update etc... (every day ?)
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- periodic task for euscan (once every week, groupped by category)
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This would allow easier on-demand refresh from web interface
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#!/usr/bin/python
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import sys, os
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import os.path
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PROJECT = '/path/to/euscanwww'
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sys.path.insert(0, os.path.dirname(PROJECT))
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sys.path.insert(0, PROJECT)
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os.chdir(PROJECT)
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os.environ['DJANGO_SETTINGS_MODULE'] = "euscanwww.settings"
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os.environ['HOME'] = "/path/to/home"
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from django.core.servers.fastcgi import runfastcgi
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runfastcgi(method="threaded", daemonize="false", maxspare=1)
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[MAIN]
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#-----------------------------------------------------------
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# Defines the directory where overlays should be installed
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storage : /path/to/euscan/local/var/lib/layman
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#-----------------------------------------------------------
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# Remote overlay lists will be stored here
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# layman will append _md5(url).xml to each filename
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cache : %(storage)s/cache
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#-----------------------------------------------------------
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# The list of locally installed overlays
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local_list: %(storage)s/overlays.xml
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#-----------------------------------------------------------
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# Path to the make.conf file that should be modified by
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# layman
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make_conf : %(storage)s/make.conf
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#-----------------------------------------------------------
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# URLs of the remote lists of overlays (one per line) or
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# local overlay definitions
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#
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#overlays : http://www.gentoo.org/proj/en/overlays/repositories.xml
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# http://dev.gentoo.org/~wrobel/layman/global-overlays.xml
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# http://mydomain.org/my-layman-list.xml
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# file:///var/lib/layman/my-list.xml
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overlays : http://www.gentoo.org/proj/en/overlays/repositories.xml
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#-----------------------------------------------------------
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# Proxy support
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# If unset, layman will use the http_proxy environment variable.
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#
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#proxy : http://[user:pass@]www.my-proxy.org:3128
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#-----------------------------------------------------------
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# Strict checking of overlay definitions
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#
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# Set either to "yes" or "no". If "no" layman will issue
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# warnings if an overlay definition is missing either
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# description or contact information.
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#
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nocheck : yes
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#-----------------------------------------------------------
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# Umask settings
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#
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# layman should usually work with a umask of 0022. You should
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# only change this setting if you are absolutely certain that
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# you know what you are doing.
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#
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#umask : 0022
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#-----------------------------------------------------------
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# Command overrides
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#
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# You can have commands point to either a binary at a different
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# location, e.g.
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#
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# /home/you/local/bin/git
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#
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# or just the command, e.g.
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#
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# git
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#
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# to use PATH-based resolution of the binary to call.
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#
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#bzr_command : /usr/bin/bzr
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#cvs_command : /usr/bin/cvs
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#darcs_command : /usr/bin/darcs
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#git_command : /usr/bin/git
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#mercurial_command : /usr/bin/hg
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#rsync_command : /usr/bin/rsync
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#svn_command : /usr/bin/svn
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#tar_command : /bin/tar
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CFLAGS="-march=native -O2 -pipe"
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CXXFLAGS="${CFLAGS}"
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CHOST="x86_64-pc-linux-gnu"
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USE=""
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ACCEPT_LICENSE="*"
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EUSCAN_ROOT="/path/to/euscan/local"
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PORTDIR="${EUSCAN_ROOT}/usr/portage"
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PORTDIR_OVERLAY="$PORTDIR"
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FEATURES="$FEATURES -strict metadata-transfer"
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## Add overlays here
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# PORTDIR_OVERLAY="${EUSCAN_ROOT}/usr/local/portage $PORTDIR_OVERLAY"
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## Or use layman
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# source ${EUSCAN_ROOT}/var/lib/layman/make.conf
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Binary file not shown.
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import os, sys
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sys.path.insert(0, '../')
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os.environ['DJANGO_SETTINGS_MODULE'] = 'euscanwww.settings'
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from django import db
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c = db.connection.cursor()
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try:
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c.execute(r"""SELECT c.relname
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FROM pg_catalog.pg_class c
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LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
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WHERE c.relkind IN ('S','')
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AND n.nspname NOT IN ('pg_catalog', 'pg_toast')
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AND pg_catalog.pg_table_is_visible(c.oid)
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""")
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to_update = []
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for row in c:
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seq_name = row[0]
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rel_name = seq_name.split("_id_seq")[0]
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to_update.append((seq_name, rel_name,))
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for row in to_update:
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c.execute(r"SELECT setval('%s', max(id)) FROM %s"%row)
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finally:
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c.close()
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