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81 lines
2.8 KiB
Plaintext
81 lines
2.8 KiB
Plaintext
-- Prelude imports
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let map = (../Prelude.dhall).`List`.map
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-- dhall-kubernetes types and defaults
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in let TLS = ../types/io.k8s.api.extensions.v1beta1.IngressTLS.dhall
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in let Rule = ../types/io.k8s.api.extensions.v1beta1.IngressRule.dhall
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in let RuleVal = ../types/io.k8s.api.extensions.v1beta1.HTTPIngressRuleValue.dhall
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in let Spec = ../types/io.k8s.api.extensions.v1beta1.IngressSpec.dhall
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in let Ingress = ../types/io.k8s.api.extensions.v1beta1.Ingress.dhall
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in let defaultIngress = ../default/io.k8s.api.extensions.v1beta1.Ingress.dhall
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in let defaultMeta = ../default/io.k8s.apimachinery.pkg.apis.meta.v1.ObjectMeta.dhall
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in let defaultSpec = ../default/io.k8s.api.extensions.v1beta1.IngressSpec.dhall
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in let IntOrString = ../types/io.k8s.apimachinery.pkg.util.intstr.IntOrString.dhall
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-- Our Service type
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in let Service = ./Config.dhall
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in let Config = { services : List Service }
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-- A function to generate an ingress given a configuration
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in let mkIngress : Config -> Ingress =
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\(config : Config) ->
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-- Given a service, make a TLS definition with their host and certificate
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let makeTLS = \(service : Service) ->
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{ hosts = Some [ service.host ]
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, secretName = Some "${service.name}-certificate"
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}
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-- Given a service, make an Ingress Rule
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in let makeRule = \(service : Service) ->
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{ host = Some service.host
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, http = Some
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{ paths = [ { backend =
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{ serviceName = service.name
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, servicePort = IntOrString.Int 80
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}
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, path = None Text
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}
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]
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}
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}
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-- Nginx ingress requires a default service as a catchall
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in let defaultService =
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{ name = "default"
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, host = "default.example.com"
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, version = " 1.0"
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}
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-- List of services
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in let services = config.services # [ defaultService ]
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-- Some metadata annotations
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-- NOTE: `dhall-to-yaml` will generate a record with arbitrary keys from a list
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-- of records where mapKey is the key and mapValue is the value of that key
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in let genericRecord = List { mapKey : Text, mapValue : Text }
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in let kv = \(k : Text) -> \(v : Text) -> { mapKey = k, mapValue = v }
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in let annotations = Some
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[ kv "kubernetes.io/ingress.class" "nginx"
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, kv "kubernetes.io/ingress.allow-http" "false"
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]
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-- Generate spec from services
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in let spec = defaultSpec //
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{ tls = Some (map Service TLS makeTLS services)
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, rules = Some (map Service Rule makeRule services)
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}
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in defaultIngress
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{ metadata = defaultMeta
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{ name = "nginx" } //
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{ annotations = annotations }
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} //
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{ spec = Some spec }
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-- Here we import our example service, and generate the ingress with it
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in mkIngress { services = [ ./myConfig.dhall ] }
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