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Add in stress test script
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James Allen
parent
bc00aab7b1
commit
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1 changed files with 152 additions and 0 deletions
152
services/document-updater/test/stress/coffee/run.coffee
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152
services/document-updater/test/stress/coffee/run.coffee
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DocUpdaterClient = require "../../acceptance/js/helpers/DocUpdaterClient"
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# MockTrackChangesApi = require "../../acceptance/js/helpers/MockTrackChangesApi"
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# MockWebApi = require "../../acceptance/js/helpers/MockWebApi"
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assert = require "assert"
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async = require "async"
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insert = (string, pos, content) ->
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string.slice(0, pos) + content + string.slice(pos)
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transform = (op1, op2) ->
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if op2.p < op1.p
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op1.p += op2.i.length
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return op1
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class StressTestClient
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constructor: (@options = {}) ->
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@options.updateDelay ?= 200
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@project_id = @options.project_id or DocUpdaterClient.randomId()
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@doc_id = @options.doc_id or DocUpdaterClient.randomId()
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@pos = @options.pos or 0
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@content = @options.content or ""
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@client_id = DocUpdaterClient.randomId()
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@version = @options.version or 0
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@inflight_op = null
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@charCode = 0
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@counts = {
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conflicts: 0
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local_updates: 0
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remote_updates: 0
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max_delay: 0
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}
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DocUpdaterClient.subscribeToAppliedOps (channel, update) =>
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update = JSON.parse(update)
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if update.doc_id == @doc_id
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@processReply(update)
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sendUpdate: () ->
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data = String.fromCharCode(65 + @charCode++ % 26)
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@content = insert(@content, @pos, data)
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DocUpdaterClient.sendUpdate(
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@project_id, @doc_id
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{
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doc: @doc_id
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op: [@inflight_op = {
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i: data
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p: @pos++
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}]
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v: @version
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meta:
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source: @client_id
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}
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)
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@inflight_op_sent = Date.now()
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processReply: (update) ->
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if update.error?
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throw new Error("Error from server: '#{update.error}'")
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assert(update.op.v == @version, "Op version from server is not increasing by 1 each time")
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@version++
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if update.op.meta.source == @client_id
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@counts.local_updates++
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@inflight_op = null
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delay = Date.now() - @inflight_op_sent
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@counts.max_delay = Math.max(@counts.max_delay, delay)
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@continue()
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else
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assert(update.op.op.length == 1)
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@counts.remote_updates++
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external_op = update.op.op[0]
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if @inflight_op?
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@counts.conflicts++
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external_op = transform(external_op, @inflight_op)
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if external_op.p < @pos
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@pos += external_op.i.length
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@content = insert(@content, external_op.p, external_op.i)
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continue: () ->
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if @updateCount > 0
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@updateCount--
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setTimeout () =>
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@sendUpdate()
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, @options.updateDelay * ( 0.5 + Math.random() )
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else
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@updateCallback()
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runForNUpdates: (n, callback = (error) ->) ->
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@updateCallback = callback
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@updateCount = n
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@continue()
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check: (callback = (error) ->) ->
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DocUpdaterClient.getDoc @project_id, @doc_id, (error, res, body) =>
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throw error if error?
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if !body.lines?
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return console.error "[#{new Date()}] ERROR: Invalid response from get doc (#{doc_id})", body
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content = body.lines.join("\n")
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if content != @content
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console.error "[#{new Date()}] Error: Client content does not match server (Server: '#{content}', Client: '#{@content}')"
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# TODO: Check content is of the correct form
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callback()
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checkDocument = (project_id, doc_id, clients, callback = (error) ->) ->
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jobs = clients.map (client) ->
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(cb) -> client.check cb
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async.parallel jobs, callback
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printSummary = (doc_id, clients) ->
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slot = require('cluster-key-slot')
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now = new Date()
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console.log "[#{now}] [#{doc_id.slice(0,4)} (slot: #{slot(doc_id)})] #{clients.length} clients..."
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for client in clients
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console.log "[#{now}] \t[#{client.client_id.slice(0,4)}] { local: #{client.counts.local_updates }, remote: #{client.counts.remote_updates}, conflicts: #{client.counts.conflicts}, max_delay: #{client.counts.max_delay} }"
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client.counts = {
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local_updates: 0
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remote_updates: 0
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conflicts: 0
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max_delay: 0
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}
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UPDATE_DELAY = parseInt(process.argv[2], 10)
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SAMPLE_INTERVAL = parseInt(process.argv[3], 10)
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for doc_and_project_id in process.argv.slice(4)
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do (doc_and_project_id) ->
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[project_id, doc_id] = doc_and_project_id.split(":")
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console.log {project_id, doc_id}
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DocUpdaterClient.getDoc project_id, doc_id, (error, res, body) =>
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throw error if error?
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if !body.lines?
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return console.error "[#{new Date()}] ERROR: Invalid response from get doc (#{doc_id})", body
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content = body.lines.join("\n")
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version = body.version
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clients = []
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for pos in [1, 2, 3, 4, 5]
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do (pos) ->
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client = new StressTestClient({doc_id, project_id, content, pos: pos, version: version, updateDelay: UPDATE_DELAY})
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clients.push client
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do runBatch = () ->
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jobs = clients.map (client) ->
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(cb) -> client.runForNUpdates(SAMPLE_INTERVAL / UPDATE_DELAY, cb)
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async.parallel jobs, (error) ->
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throw error if error?
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printSummary(doc_id, clients)
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checkDocument project_id, doc_id, clients, (error) ->
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throw error if error?
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runBatch()
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