Class: Floe::ContainerRunner::Docker
Direct Known Subclasses
Podman
Constant Summary
collapse
- DOCKER_COMMAND =
"docker"
Constants included
from DockerMixin
Floe::ContainerRunner::DockerMixin::MAX_CONTAINER_NAME_SIZE
Constants inherited
from Runner
Runner::OUTPUT_MARKER
Instance Method Summary
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#container_name, #image_name
Methods inherited from Runner
for_resource, register_scheme
Constructor Details
#initialize(options = {}) ⇒ Docker
Returns a new instance of Docker.
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# File 'lib/floe/container_runner/docker.rb', line 10
def initialize(options = {})
require "awesome_spawn"
require "io/wait"
require "tempfile"
super
@network = options.fetch("network", "bridge")
@pull_policy = options["pull-policy"]
end
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Instance Method Details
#cleanup(runner_context) ⇒ Object
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# File 'lib/floe/container_runner/docker.rb', line 41
def cleanup(runner_context)
container_id, secrets_file = runner_context.values_at("container_ref", "secrets_ref")
delete_container(container_id) if container_id
delete_secret(secrets_file) if secrets_file
end
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#output(runner_context) ⇒ Object
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# File 'lib/floe/container_runner/docker.rb', line 115
def output(runner_context)
return runner_context.slice("Error", "Cause") if runner_context.key?("Error")
output = docker!("logs", runner_context["container_ref"], :combined_output => true).output
runner_context["output"] = output
end
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#run_async!(resource, env, secrets, context) ⇒ Object
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# File 'lib/floe/container_runner/docker.rb', line 21
def run_async!(resource, env, secrets, context)
raise ArgumentError, "Invalid resource" unless resource&.start_with?("docker://")
image = resource.sub("docker://", "")
execution_id = context.execution["Id"]
runner_context = {}
if secrets && !secrets.empty?
runner_context["secrets_ref"] = create_secret(secrets)
end
begin
runner_context["container_ref"] = run_container(image, env, execution_id, runner_context["secrets_ref"], context.logger)
runner_context
rescue AwesomeSpawn::CommandResultError => err
cleanup(runner_context)
{"Error" => "States.TaskFailed", "Cause" => err.to_s}
end
end
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#running?(runner_context) ⇒ Boolean
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# File 'lib/floe/container_runner/docker.rb', line 107
def running?(runner_context)
!!runner_context.dig("container_state", "Running")
end
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#status!(runner_context) ⇒ Object
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# File 'lib/floe/container_runner/docker.rb', line 101
def status!(runner_context)
return if runner_context.key?("Error")
runner_context["container_state"] = inspect_container(runner_context["container_ref"])&.dig("State")
end
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#success?(runner_context) ⇒ Boolean
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# File 'lib/floe/container_runner/docker.rb', line 111
def success?(runner_context)
runner_context.dig("container_state", "ExitCode") == 0
end
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#wait(timeout: nil, events: %i[create update delete],, &block) ⇒ Object
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# File 'lib/floe/container_runner/docker.rb', line 48
def wait(timeout: nil, events: %i[create update delete], &block)
until_timestamp = Time.now.utc + timeout if timeout
r, w = IO.pipe
pid = AwesomeSpawn.run_detached(
self.class::DOCKER_COMMAND, :err => :out, :out => w, :params => wait_params(until_timestamp)
)
w.close
loop do
readable_timeout = until_timestamp - Time.now.utc if until_timestamp
next if r.wait_readable(readable_timeout).nil?
notices = []
while r.ready?
notice = r.gets
break if notice.nil?
event, runner_context = parse_notice(notice)
next if event.nil? || !events.include?(event)
notices << [event, runner_context]
end
if block
notices.each(&block)
else
sigterm(pid)
return notices
end
Process.kill(0, pid)
rescue Errno::ESRCH
break
end
ensure
r.close
end
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