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#!/usr/bin/ruby
=begin
Feed2Imap - RSS/Atom Aggregator uploading to an IMAP Server
Copyright (c) 2005 Lucas Nussbaum <lucas@lucas-nussbaum.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
=end
require 'feed2imap/config'
require 'feed2imap/cache'
require 'feed2imap/channel'
require 'feed2imap/httpfetcher'
require 'logger'
require 'thread'
# Feed2Imap version
F2I_VERSION = '0.2'
class Feed2Imap
def initialize(verbose, cacherebuild, configfile)
@logger = Logger::new(STDOUT)
if verbose
@logger.level = Logger::DEBUG
else
@logger.level = Logger::WARN
end
@logger.info("Feed2Imap V.#{F2I_VERSION} started")
# reading config
@logger.info('Reading configuration file')
if not File::exist?(configfile)
@logger.fatal("Configuration file #{configfile} not found.")
exit(1)
end
begin
File::open(configfile) {
|f| @config = F2IConfig::new(f)
}
rescue
@logger.fatal("Error while reading configuration file, exiting: #{$!}")
exit(1)
end
# init cache
@logger.info('Initializing cache')
@cache = ItemCache::new
if not File::exist?(@config.cache)
@logger.warn("Cache file #{@config.cache} not found, using a new one")
else
File::open(@config.cache) { |f| @cache.load(f) }
end
# connecting all IMAP accounts
@logger.info('Connecting to IMAP accounts')
@config.imap_accounts.each_value do |ac|
begin
ac.connect
rescue
@logger.fatal("Error while connecting to #{ac}, exiting: #{$!}")
exit(1)
end
end
# check that IMAP folders exist
@logger.info("Checking IMAP folders")
@config.feeds.each do |f|
begin
f.imapaccount.create_folder(f.folder) if not f.imapaccount.folder_exist?(f.folder)
rescue
@logger.fatal("Error while creating IMAP folder #{f.folder}: #{$!}")
exit(1)
end
end
# for each feed, fetch, upload to IMAP and cache
@logger.info("Fetching feeds")
loggermon = Mutex::new
ths = []
@config.feeds.each do |f|
ths << Thread::new do
begin
f.body = HTTPFetcher::fetch(f.url, @cache.get_last_check(f.name))
# dump if requested
if @config.dumpdir
fname = @config.dumpdir + '/' + f.name + '-' + Time::now.xmlschema
File::open(fname, 'w') { |file| file.puts f.body }
end
rescue Timeout::Error
loggermon.synchronize do
@logger.fatal("Timeout::Error while fetching #{f.url}: #{$!}")
end
rescue
loggermon.synchronize do
@logger.fatal("Error while fetching #{f.url}: #{$!}")
end
end
end
end
ths.each { |t| t.join }
@logger.info("Parsing and uploading")
@config.feeds.each do |f|
next if f.body.nil? # means 304
begin
channel = Channel::new(f.body)
rescue
@logger.fatal("Error while parsing #{f.name}: #{$!}")
next
end
begin
newitems, updateditems = @cache.get_new_items(f.name, channel.items)
rescue
@logger.fatal("Exception caught when selecting new items for #{f.name}: #{$!}")
puts $!.backtrace
next
end
@logger.info("#{f.name}: #{newitems.length} new items, #{updateditems.length} updated items.") if newitems.length > 0 or updateditems.length > 0
begin
if !cacherebuild
updateditems.each { |i| f.imapaccount.updatemail(f.folder, i.to_mail(f.name), i.cacheditem.index) }
newitems.each { |i| f.imapaccount.putmail(f.folder, i.to_mail(f.name)) }
end
rescue
@logger.fatal("Exception caught while uploading mail to #{f.folder}: #{$!}")
puts $!.backtrace
next
end
begin
@cache.commit_cache(f.name)
rescue
@logger.fatal("Exception caught while updating cache for #{f.name}: #{$!}")
next
end
end
@logger.info("Finished. Saving cache")
begin
File::open(@config.cache, 'w') { |f| @cache.save(f) }
rescue
@logger.fatal("Exception caught while writing cache to #{@config.cache}: #{$!}")
end
@logger.info("Closing IMAP connections")
begin
@config.imap_accounts.each_value { |ac| ac.disconnect }
rescue
@logger.fatal("Exception caught while closing connection to #{ac.to_s}: #{$!}")
end
end
end
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