55 lines
1.2 KiB
Crystal
55 lines
1.2 KiB
Crystal
# This file is to be executed as:
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#
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# % crystal ./spec/manual/load_test.cr
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#
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# It generates a number of producers and consumers. If the process hangs
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# it means that the connection pool is not working properly. Likely a race condition.
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#
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require "../dummy_driver"
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require "../../src/db"
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require "json"
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CONNECTION = "dummy://host?initial_pool_size=5&max_pool_size=5&max_idle_pool_size=5"
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alias TChannel = Channel(Int32)
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alias TDone = Channel(Bool)
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COUNT = 200
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def start_consumer(channel : TChannel, done : TDone)
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spawn do
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indeces = Set(Int32).new
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loop do
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indeces << channel.receive
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puts "Received size=#{indeces.size}"
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break if indeces.size == COUNT
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end
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done.send true
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end
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end
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def start_producers(channel : TChannel)
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db = DB.open CONNECTION do |db|
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sql = "1,title,description,2023 " * 100_000
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COUNT.times do |index|
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spawn(name: "prod #{index}") do
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puts "Sending #{index}"
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_films = db.query_all(sql, as: {Int32, String, String, Int32})
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rescue ex
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puts "Error: #{ex.message}"
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ensure
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channel.send index
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end
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end
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end
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end
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channel = TChannel.new
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done = TDone.new
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start_consumer(channel, done)
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start_producers(channel)
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done.receive
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