SoundSoftware Code Site

#!/usr/bin/env ruby

# == Synopsis

#

# convert-external-repos: Update local Mercurial mirrors of external repos,

# by running an external command for each project requiring an update.

#

# == Usage

#

#    convert-external-repos [OPTIONS...] -s [DIR] -r [HOST]

#     

# == Arguments (mandatory)

#

#   -s, --scm-dir=DIR         use DIR as base directory for repositories

#   -r, --redmine-host=HOST   assume Redmine is hosted on HOST. Examples:

#                             -r redmine.example.net

#                             -r http://redmine.example.net

#                             -r https://example.net/redmine

#   -k, --key=KEY             use KEY as the Redmine API key

#   -c, --command=COMMAND     use this command to update each external

#                             repository: command is called with the name

#                             of the project, the path to its repo, and

#                             its external repo url as its three args

#

# == Options

#

#   --http-user=USER          User for HTTP Basic authentication with Redmine WS

#   --http-pass=PASSWORD      Password for Basic authentication with Redmine WS

#   -t, --test                only show what should be done

#   -h, --help                show help and exit

#   -v, --verbose             verbose

#   -V, --version             print version and exit

#   -q, --quiet               no log

require 'getoptlong'

require 'rdoc/usage'

require 'find'

require 'etc'

Version = "1.0"

opts = GetoptLong.new(

                      ['--scm-dir',      '-s', GetoptLong::REQUIRED_ARGUMENT],

                      ['--redmine-host', '-r', GetoptLong::REQUIRED_ARGUMENT],

                      ['--key',          '-k', GetoptLong::REQUIRED_ARGUMENT],

                      ['--http-user',          GetoptLong::REQUIRED_ARGUMENT],

                      ['--http-pass',          GetoptLong::REQUIRED_ARGUMENT],

                      ['--command' ,     '-c', GetoptLong::REQUIRED_ARGUMENT],

                      ['--test',         '-t', GetoptLong::NO_ARGUMENT],

                      ['--verbose',      '-v', GetoptLong::NO_ARGUMENT],

                      ['--version',      '-V', GetoptLong::NO_ARGUMENT],

                      ['--help'   ,      '-h', GetoptLong::NO_ARGUMENT],

                      ['--quiet'  ,      '-q', GetoptLong::NO_ARGUMENT]

                      )

$verbose      = 0

$quiet        = false

$redmine_host = ''

$repos_base   = ''

$http_user    = ''

$http_pass    = ''

$test         = false

$mirrordir    = '/var/mirror'

def log(text, options={})

  level = options[:level] || 0

  puts text unless $quiet or level > $verbose

  exit 1 if options[:exit]

end

def system_or_raise(command)

  raise "\"#{command}\" failed" unless system command

end

begin

  opts.each do |opt, arg|

    case opt

    when '--scm-dir';        $repos_base   = arg.dup

    when '--redmine-host';   $redmine_host = arg.dup

    when '--key';            $api_key      = arg.dup

    when '--http-user';      $http_user    = arg.dup

    when '--http-pass';      $http_pass    = arg.dup

    when '--command';        $command      = arg.dup

    when '--verbose';        $verbose += 1

    when '--test';           $test = true

    when '--version';        puts Version; exit

    when '--help';           RDoc::usage

    when '--quiet';          $quiet = true

    end

  end

rescue

  exit 1

end

if $test

  log("running in test mode")

end

if ($redmine_host.empty? or $repos_base.empty? or $command.empty?)

  RDoc::usage

end

unless File.directory?($repos_base)

  log("directory '#{$repos_base}' doesn't exist", :exit => true)

end

begin

  require 'active_resource'

rescue LoadError

  log("This script requires activeresource.\nRun 'gem install activeresource' to install it.", :exit => true)

end

class Project < ActiveResource::Base

  self.headers["User-agent"] = "SoundSoftware external repository converter/#{Version}"

end

log("querying Redmine for projects...", :level => 1);

$redmine_host.gsub!(/^/, "http://") unless $redmine_host.match("^https?://")

$redmine_host.gsub!(/\/$/, '')

Project.site = "#{$redmine_host}/sys";

Project.user = $http_user;

Project.password = $http_pass;

begin

  # Get all active projects that have the Repository module enabled

  projects = Project.find(:all, :params => {:key => $api_key})

rescue => e

  log("Unable to connect to #{Project.site}: #{e}", :exit => true)

end

if projects.nil?

  log('no project found, perhaps you forgot to "Enable WS for repository management"', :exit => true)

end

log("retrieved #{projects.size} projects", :level => 1)

projects.each do |project|

  log("treating project #{project.name}", :level => 1)

  if project.identifier.empty?

    log("\tno identifier for project #{project.name}")

    next

  elsif not project.identifier.match(/^[a-z0-9\-]+$/)

    log("\tinvalid identifier for project #{project.name} : #{project.identifier}");

    next

  end

  if !project.respond_to?(:repository) or !project.repository.is_external?

    log("\tproject #{project.identifier} does not use an external repository");

    next

  end

  external_url = project.repository.external_url;

  log("\tproject #{project.identifier} has external repository url #{external_url}");

  if !external_url.match(/^[a-z][a-z+]{0,8}[a-z]:\/\//)

    log("\tthis doesn't look like a plausible url to me, skipping")

    next

  end

  repos_path = File.join($repos_base, project.identifier).gsub(File::SEPARATOR, File::ALT_SEPARATOR || File::SEPARATOR)

  unless File.directory?(repos_path)

    log("\tproject repo directory '#{repos_path}' doesn't exist")

    next

  end

  system($command, project.identifier, repos_path, external_url)

  $cache_clearance_file = File.join($mirrordir, project.identifier, 'url_changed')

  if File.file?($cache_clearance_file)

    log("\tproject repo url has changed, requesting cache clearance")

    if project.post(:repository_cache, :key => $api_key)

      File.delete($cache_clearance_file)

    end

  end

end