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listener.rb
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listener.rb
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require 'rubygems'
require 'couchrest'
require 'logger'
require 'json'
require 'redis'
redis = Redis.new :driver => :hiredis
databases = redis.smembers 'speedwing:databases'
logger = Logger.new 'log/listener.txt', 'daily'
logger.info "[INIT]"
def listen_for_changes(database, redis, logger)
db = CouchRest.database("http://localhost:5984/#{database}")
since = redis.get("shortcircuit:#{database}:since") || 'now'
opts = {
:since => since,
:feed => 'continuous',
:heartbeat => true,
:include_docs => true,
:filter => 'app/lines'
}
db.changes opts do |payload|ºº
pretty_payload = JSON.pretty_generate(payload)
logger.info "[EVENT] #{database} : \n#{pretty_payload}"
id = payload['id']
data_store_key = "shortcircuit:#{database}:running:#{id}"
unless redis.sismember "shotcircuit:completed", id
redis.set data_store_key, payload['doc'].to_json
else
redis.del data_store_key
end
redis.set "shortcircuit:#{database}:since", payload['seq']
end
end
threads = []
databases.each do |db|
thread = Thread.new {listen_for_changes(db, redis, logger)}
threads.push thread
end
logger.info "[STARTING THREADS]"
threads.map!(&:join)