slackからAWS SNS経由でpush通知を送る ref: http://qiita.com/hotakasaito/items/620247240b2f76e58e0e

file0.js

AWS = require('aws-sdk')
AWS.config.region = 'ap-northeast-1'
sns = new AWS.SNS()
platformApplicationArn = 'arn:aws:sns:ap-northeast-1:xxx:xxx'

module.exports = (robot) ->
  Date::format = ->
    "#{@.getFullYear()}#{@.getMonth() + 1}#{@.getDate()}#{@.getHours()}#{@.getMinutes()}#{@.getSeconds()}"

  subscribe = (topicArn, endpointArn) ->
    sns.subscribe({TopicArn: topicArn, Protocol: 'application', Endpoint: endpointArn}, (err, data) ->
      if err
        console.log(err, err.stack)
      else
        console.log(data)
    )

  robot.respond /\s+(?:sns)\s+create\s*/i, (msg) ->
    # topicを作ったのが誰だか分かるようにした
    topicName = "push-notifications-topic-#{msg.message.user.name}-#{new Date().format()}"
    sns.createTopic({Name: topicName}, (err, data) ->
      if err
        console.log(err, err.stack)
        msg.send err
        return
      else
        topicArn = data.TopicArn
        sns.listEndpointsByPlatformApplication({PlatformApplicationArn: platformApplicationArn}).eachPage((err, data) ->
          if err
            console.log(err, err.stack)
            msg.send err
          else if !data
            msg.send "create success\n```\n#{topicArn}\n```"
          else
            for endpoint in data.Endpoints
              # 無効なトークンは除外
              continue if endpoint.Attributes.Enabled == 'false'
              subscribe(topicArn, endpoint.EndpointArn)
        )
    )

file1.js

  robot.respond /\s+sns\s+push\s+(\S+)\s+[\'|\"]?(.+?)[\"|\']?$/i, (msg) ->
    # topicArnを簡易チェック(自分が作ったTopicしか操作出来ないようにした)
    if ! ///push-notifications-topic-#{msg.message.user.name}-///i.test(msg.match[1])
      msg.send "error: topicArn(#{msg.match[1]})"
      return
    topicArn = msg.match[1]
    params = {
      TopicArn: topicArn,
      Message: msg.match[2]
    }
    sns.publish(params, (err, data) ->
      if err
        console.log(err, err.stack)
        msg.send err
      else
        message_id = data.MessageId
        sns.deleteTopic({TopicArn: topicArn}, (err, data) ->
          if err
            console.log(err, err.stack)
            msg.send err
          else
            msg.send "push success\n```\n#{message_id}\n```"
        )
    )