05488e4c1e
When deploying check if there is already a container with the existing name. If there is rename it to "<version>_<random_hex_string>" to remove the name clash with the new container we want to boot. We can then do the normal zero downtime run/wait/stop. While implementing this I discovered the --filter name=foo does a substring match for foo, so I've updated those filters to do an exact match instead.
53 lines
1.2 KiB
Ruby
53 lines
1.2 KiB
Ruby
class Mrsk::Commands::Healthcheck < Mrsk::Commands::Base
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EXPOSED_PORT = 3999
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def run
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web = config.role(:web)
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docker :run,
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"--detach",
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"--name", container_name_with_version,
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"--publish", "#{EXPOSED_PORT}:#{config.healthcheck["port"]}",
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"--label", "service=#{container_name}",
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"-e", "MRSK_CONTAINER_NAME=\"#{container_name}\"",
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*web.env_args,
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*config.volume_args,
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*web.option_args,
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config.absolute_image,
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web.cmd
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end
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def curl
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[ :curl, "--silent", "--output", "/dev/null", "--write-out", "'%{http_code}'", "--max-time", "2", health_url ]
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end
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def logs
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pipe container_id, xargs(docker(:logs, "--tail", 50, "2>&1"))
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end
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def stop
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pipe container_id, xargs(docker(:stop))
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end
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def remove
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pipe container_id, xargs(docker(:container, :rm))
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end
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private
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def container_name
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[ "healthcheck", config.service, config.destination ].compact.join("-")
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end
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def container_name_with_version
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"#{container_name}-#{config.version}"
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end
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def container_id
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container_id_for(container_name: container_name_with_version)
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end
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def health_url
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"http://localhost:#{EXPOSED_PORT}#{config.healthcheck["path"]}"
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end
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end
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