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29 lines
854 B
CoffeeScript
29 lines
854 B
CoffeeScript
SystemMessage = require("../../models/SystemMessage").SystemMessage
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module.exports = SystemMessageManager =
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getMessages: (callback = (error, messages) ->) ->
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if @_cachedMessages?
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return callback null, @_cachedMessages
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else
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@getMessagesFromDB (error, messages) =>
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return callback(error) if error?
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@_cachedMessages = messages
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return callback null, messages
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getMessagesFromDB: (callback = (error, messages) ->) ->
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SystemMessage.find {}, callback
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clearMessages: (callback = (error) ->) ->
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SystemMessage.remove {}, callback
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createMessage: (content, callback = (error) ->) ->
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message = new SystemMessage { content: content }
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message.save callback
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clearCache: () ->
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delete @_cachedMessages
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CACHE_TIMEOUT = 20 * 1000 # 20 seconds
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setInterval () ->
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SystemMessageManager.clearCache()
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, CACHE_TIMEOUT
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