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29 lines
977 B
CoffeeScript
29 lines
977 B
CoffeeScript
Settings = require('settings-sharelatex')
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rclient = require("redis-sharelatex").createClient(Settings.redis.realtime)
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Keys = Settings.redis.realtime.key_schema
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logger = require('logger-sharelatex')
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MAX_OPS_PER_ITERATION = 8 # process a limited number of ops for safety
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module.exports = RealTimeRedisManager =
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getPendingUpdatesForDoc : (doc_id, callback)->
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multi = rclient.multi()
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multi.lrange Keys.pendingUpdates({doc_id}), 0, (MAX_OPS_PER_ITERATION-1)
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multi.ltrim Keys.pendingUpdates({doc_id}), MAX_OPS_PER_ITERATION, -1
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multi.exec (error, replys) ->
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return callback(error) if error?
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jsonUpdates = replys[0]
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updates = []
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for jsonUpdate in jsonUpdates
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try
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update = JSON.parse jsonUpdate
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catch e
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return callback e
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updates.push update
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callback error, updates
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getUpdatesLength: (doc_id, callback)->
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rclient.llen Keys.pendingUpdates({doc_id}), callback
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sendData: (data) ->
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rclient.publish "applied-ops", JSON.stringify(data)
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