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(ns dda.c4k-website.website
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(:require
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[clojure.spec.alpha :as s]
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[clojure.math.numeric-tower :as m]
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[clojure.string :as st]
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#?(:cljs [shadow.resource :as rc])
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#?(:clj [orchestra.core :refer [defn-spec]]
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:cljs [orchestra.core :refer-macros [defn-spec]])
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#?(:clj [clojure.edn :as edn]
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:cljs [cljs.reader :as edn])
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[dda.c4k-common.yaml :as yaml]
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[dda.c4k-common.common :as cm]
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[dda.c4k-common.base64 :as b64]
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[dda.c4k-common.predicate :as pred]))
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(defn domain-list?
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[input]
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(or
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(st/blank? input)
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(pred/string-of-separated-by? pred/fqdn-string? #"," input)))
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(s/def ::fqdn pred/fqdn-string?)
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(s/def ::issuer pred/letsencrypt-issuer?)
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(s/def ::volume-total-storage-size (partial pred/int-gt-n? 5))
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(def config-defaults {:issuer "staging"})
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(def config? (s/keys :req-un [::fqdn]
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:opt-un [::issuer]))
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(def auth? (s/keys :req-un [::authtoken ::gitrepourl]))
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(def vol? (s/keys :req-un [::volume-total-storage-size
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::number-of-websites]))
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(defn volume-size-by-total-available-space
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[total number-of-websites-on-node]
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(m/floor (/ total number-of-websites-on-node))) ; ToDo: This might be a terrible idea
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(defn unique-name-from-fqdn
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[fqdn]
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(st/replace fqdn #"\." "-"))
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; ToDo: Move to common
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(defn-spec replace-all-matching-subvalues-in-string-start pred/map-or-seq?
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[col string?
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value-to-partly-match string?
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value-to-inplace string?]
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(clojure.walk/postwalk #(if (and (= (type value-to-partly-match) (type %))
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(re-matches (re-pattern (str value-to-partly-match ".*")) %))
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(st/replace % value-to-partly-match value-to-inplace) %)
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col))
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#?(:cljs
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(defmethod yaml/load-resource :website [resource-name]
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(case resource-name
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"website/certificate.yaml" (rc/inline "website/certificate.yaml")
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"website/ingress.yaml" (rc/inline "website/ingress.yaml")
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"website/nginx-configmap.yaml" (rc/inline "website/nginx-configmap.yaml")
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"website/nginx-deployment.yaml" (rc/inline "website/nginx-deployment.yaml")
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"website/nginx-service.yaml" (rc/inline "website/nginx-service.yaml")
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"website/website-content-volume.yaml" (rc/inline "website/website-content-volume.yaml")
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"website/website-build-cron.yaml" (rc/inline "website/website-build-cron.yaml")
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"website/website-build-deployment.yaml" (rc/inline "website/website-build-deployment.yaml")
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"website/website-build-secret.yaml" (rc/inline "website/website-build-secret.yaml")
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(throw (js/Error. "Undefined Resource!")))))
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#?(:cljs
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(defmethod yaml/load-as-edn :website [resource-name]
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(yaml/from-string (yaml/load-resource resource-name))))
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(defn-spec generate-certificate pred/map-or-seq?
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[config config?]
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(let [{:keys [fqdn issuer]
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:or {issuer "staging"}} config
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letsencrypt-issuer (name issuer)]
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(->
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(yaml/load-as-edn "website/certificate.yaml")
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(assoc-in [:spec :issuerRef :name] letsencrypt-issuer)
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(replace-all-matching-subvalues-in-string-start "NAME" (unique-name-from-fqdn fqdn))
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(cm/replace-all-matching-values-by-new-value "FQDN" fqdn))))
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(defn-spec generate-ingress pred/map-or-seq?
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[config config?]
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(let [{:keys [fqdn]} config]
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(->
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(yaml/load-as-edn "website/ingress.yaml")
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(replace-all-matching-subvalues-in-string-start "NAME" (unique-name-from-fqdn fqdn))
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(cm/replace-all-matching-values-by-new-value "FQDN" fqdn))))
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(defn-spec generate-nginx-configmap pred/map-or-seq?
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[config config?]
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(let [{:keys [fqdn]} config
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configmap (yaml/load-as-edn "website/nginx-configmap.yaml")]
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(->
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configmap
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(assoc-in [:data :website.conf] (st/replace (-> configmap :data :website.conf) #"FQDN" (str fqdn ";")))
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(replace-all-matching-subvalues-in-string-start "NAME" (unique-name-from-fqdn fqdn)))))
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(defn-spec generate-nginx-deployment pred/map-or-seq?
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[config config?]
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(let [{:keys [fqdn]} config]
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(->
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(yaml/load-as-edn "website/nginx-deployment.yaml")
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(replace-all-matching-subvalues-in-string-start "NAME" (unique-name-from-fqdn fqdn)))))
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(defn-spec generate-nginx-service pred/map-or-seq?
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[config config?]
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(let [{:keys [fqdn]} config]
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(->
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(yaml/load-as-edn "website/nginx-service.yaml")
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(replace-all-matching-subvalues-in-string-start "NAME" (unique-name-from-fqdn fqdn)))))
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(defn-spec generate-website-content-volume pred/map-or-seq?
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[config vol?]
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(let [{:keys [volume-total-storage-size number-of-websites fqdn]} config
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data-storage-size (volume-size-by-total-available-space volume-total-storage-size number-of-websites)]
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(->
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(yaml/load-as-edn "website/website-content-volume.yaml")
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(replace-all-matching-subvalues-in-string-start "NAME" (unique-name-from-fqdn fqdn))
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(cm/replace-all-matching-values-by-new-value "WEBSITESTORAGESIZE" (str (str data-storage-size) "Gi")))))
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(defn-spec generate-website-build-cron pred/map-or-seq?
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[config config?]
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(let [{:keys [fqdn]} config]
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(->
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(yaml/load-as-edn "website/website-build-cron.yaml")
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(replace-all-matching-subvalues-in-string-start "NAME" (unique-name-from-fqdn fqdn))
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(cm/replace-all-matching-values-by-new-value "FQDN" fqdn))))
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(defn-spec generate-website-build-deployment pred/map-or-seq?
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[config config?]
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(let [{:keys [fqdn]} config]
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(->
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(yaml/load-as-edn "website/website-build-deployment.yaml")
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(replace-all-matching-subvalues-in-string-start "NAME" (unique-name-from-fqdn fqdn))
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(cm/replace-all-matching-values-by-new-value "FQDN" fqdn))))
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(defn-spec generate-website-build-secret pred/map-or-seq?
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[auth auth?]
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(let [{:keys [fqdn
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authtoken
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gitrepourl]} auth]
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(->
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(yaml/load-as-edn "website/website-build-secret.yaml")
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(replace-all-matching-subvalues-in-string-start "NAME" (unique-name-from-fqdn fqdn))
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(cm/replace-all-matching-values-by-new-value "TOKEN" (b64/encode authtoken))
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(cm/replace-all-matching-values-by-new-value "URL" (b64/encode gitrepourl)))))
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