Sha256: 0399ab2c7adf7165133a2b069a52d039eae5444426eaa41ffd86035c8e2b5060
Contents?: true
Size: 1.39 KB
Versions: 6
Compression:
Stored size: 1.39 KB
Contents
module Floe
class Workflow
class Runner
module DockerMixin
def image_name(image)
image.match(%r{^(?<repository>.+/)?(?<image>.+):(?<tag>.+)$})&.named_captures&.dig("image")
end
MAX_CONTAINER_NAME_SIZE = 63 - 5 - 9 # 63 is the max kubernetes pod name length
# -5 for the "floe-" prefix
# -9 for the random hex suffix and leading hyphen
def container_name(image)
name = image_name(image)
raise ArgumentError, "Invalid docker image [#{image}]" if name.nil?
# Normalize the image name to be used in the container name.
# This follows RFC 1123 Label names in Kubernetes as they are the most restrictive
# See https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#dns-label-names
# and https://github.com/kubernetes/kubernetes/blob/952a9cb0/staging/src/k8s.io/apimachinery/pkg/util/validation/validation.go#L178-L184
#
# This does not follow the leading and trailing character restriction because we will embed it
# below with a prefix and suffix that already conform to the RFC.
normalized_name = name.downcase.gsub(/[^a-z0-9-]/, "-")[0, MAX_CONTAINER_NAME_SIZE]
"floe-#{normalized_name}-#{SecureRandom.hex(4)}"
end
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems