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100 lines
3.4 KiB
CoffeeScript
100 lines
3.4 KiB
CoffeeScript
Settings = require "settings-sharelatex"
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Errors = require "./Errors"
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Metrics = require "./Metrics"
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logger = require "logger-sharelatex"
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request = (require("requestretry")).defaults({
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maxAttempts: 2
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retryDelay: 10
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})
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# We have to be quick with HTTP calls because we're holding a lock that
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# expires after 30 seconds. We can't let any errors in the rest of the stack
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# hold us up, and need to bail out quickly if there is a problem.
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MAX_HTTP_REQUEST_LENGTH = 5000 # 5 seconds
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updateMetric = (method, error, response) ->
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# find the status, with special handling for connection timeouts
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# https://github.com/request/request#timeouts
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status = if error?.connect is true
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"#{error.code} (connect)"
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else if error?
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error.code
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else if response?
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response.statusCode
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Metrics.inc method, 1, {status: status}
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if error?.attempts > 1
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Metrics.inc "#{method}-retries", 1, {status: 'error'}
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if response?.attempts > 1
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Metrics.inc "#{method}-retries", 1, {status: 'success'}
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module.exports = PersistenceManager =
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getDoc: (project_id, doc_id, _callback = (error, lines, version, ranges, pathname, projectHistoryId, projectHistoryType) ->) ->
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timer = new Metrics.Timer("persistenceManager.getDoc")
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callback = (args...) ->
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timer.done()
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_callback(args...)
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url = "#{Settings.apis.web.url}/project/#{project_id}/doc/#{doc_id}"
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request {
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url: url
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method: "GET"
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headers:
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"accept": "application/json"
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auth:
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user: Settings.apis.web.user
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pass: Settings.apis.web.pass
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sendImmediately: true
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jar: false
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timeout: MAX_HTTP_REQUEST_LENGTH
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}, (error, res, body) ->
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updateMetric('getDoc', error, res)
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return callback(error) if error?
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if res.statusCode >= 200 and res.statusCode < 300
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try
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body = JSON.parse body
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catch e
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return callback(e)
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if !body.lines?
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return callback(new Error("web API response had no doc lines"))
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if !body.version? or not body.version instanceof Number
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return callback(new Error("web API response had no valid doc version"))
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if !body.pathname?
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return callback(new Error("web API response had no valid doc pathname"))
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return callback null, body.lines, body.version, body.ranges, body.pathname, body.projectHistoryId, body.projectHistoryType
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else if res.statusCode == 404
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return callback(new Errors.NotFoundError("doc not not found: #{url}"))
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else
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return callback(new Error("error accessing web API: #{url} #{res.statusCode}"))
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setDoc: (project_id, doc_id, lines, version, ranges, lastUpdatedAt, lastUpdatedBy,_callback = (error) ->) ->
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timer = new Metrics.Timer("persistenceManager.setDoc")
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callback = (args...) ->
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timer.done()
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_callback(args...)
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url = "#{Settings.apis.web.url}/project/#{project_id}/doc/#{doc_id}"
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request {
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url: url
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method: "POST"
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json:
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lines: lines
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ranges: ranges
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version: version
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lastUpdatedBy: lastUpdatedBy
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lastUpdatedAt: lastUpdatedAt
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auth:
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user: Settings.apis.web.user
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pass: Settings.apis.web.pass
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sendImmediately: true
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jar: false
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timeout: MAX_HTTP_REQUEST_LENGTH
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}, (error, res, body) ->
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updateMetric('setDoc', error, res)
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return callback(error) if error?
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if res.statusCode >= 200 and res.statusCode < 300
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return callback null
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else if res.statusCode == 404
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return callback(new Errors.NotFoundError("doc not not found: #{url}"))
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else
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return callback(new Error("error accessing web API: #{url} #{res.statusCode}"))
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