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epiph/app/server/collections/export.coffee
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export.coffee
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@Exports = new (FS.Collection)('exports',
stores: [
new FS.Store.GridFS('exports')
]
)
Exports.allow
download: (userId, doc) ->
Roles.userIsInRole(userId, ['admin'])
SyncedCron.add
name: 'remove old exports'
schedule: (parser) ->
# parser is a later.parse object
parser.text 'every 10 minute'
job: ->
validFor = 20 * 60 * 1000 #20min
find =
'metadata.createdAt':
$lt: Date.now()-validFor
count = Exports.find(find).count()
Exports.remove find
"#{count} old exports removed"
#FS.debug = true
Future = Npm.require('fibers/future')
Meteor.methods
'createCSV': (selection, loginToken) ->
checkIfAdmin()
check selection, Object
check loginToken, String
#https://github.com/CollectionFS/Meteor-CollectionFS/blob/master/packages/access-point/access-point-common.js
authObject =
authToken: loginToken
authString = JSON.stringify(authObject)
authToken = FS.Utility.btoa(authString)
csv = ""
separator = ';'
Export.columnHeaders(selection).forEach (header) ->
csv += header.title+separator
csv += '\n'
Export.rows(selection).forEach (row) ->
Export.columns(selection, row).forEach (col) ->
csv += col+separator
csv += '\n'
#console.log csv
#insert file into collection and return download url
future = new Future
buffer = new Buffer(csv, "utf-8")
newFile = new FS.File
newFile.name "export_#{moment().toISOString()}.csv"
newFile.metadata =
createdAt: Date.now()
userId: Meteor.userId()
newFile.attachData buffer, { type: 'text/csv' }, (error) ->
if error?
future.throw error
return
Exports.insert newFile, (err, fileObj) ->
if err?
future.throw err
return
urlRetrieveCount = 0
onStored = Meteor.bindEnvironment((->
if urlRetrieveCount > 20
future.throw new Error('Too much url retrieval attempts for export.')
return
url = fileObj.url { auth: authToken }
if url
future.return url
else
urlRetrieveCount++
setTimeout onStored, 500
return
), (error) ->
future.throw error
return
)
fileObj.once 'stored', onStored
future.wait()
url = future.get()
url
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