822590dcf6
[mproxy](https://github.com/basecamp/parachute) is a custom minimal proxy designed specifically for Kamal. It has two big advantages over Traefik: 1. Imperative deployments - we tell it to switch from container A to container B, and it waits for container B to start then switches. No need to poll for health checks ourselves or mess around with forcing health checks to fail. 2. Support for multiple apps - as much as possible, configuration is supplied at runtime by the deploy command, allowing us to have multiple apps share an instance of mproxy without conflicting config.
32 lines
435 B
Ruby
32 lines
435 B
Ruby
class Kamal::Cli::App::Barrier
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def initialize
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@ivar = Concurrent::IVar.new
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end
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def close
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set(false)
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end
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def open
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set(true)
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end
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def wait
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unless opened?
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raise Kamal::Cli::BootError.new("Halted at barrier")
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end
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end
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private
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def opened?
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@ivar.value
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end
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def set(value)
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@ivar.set(value)
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true
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rescue Concurrent::MultipleAssignmentError
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false
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end
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end
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