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99 lines
4.0 KiB
Clojure
99 lines
4.0 KiB
Clojure
(ns dda.c4k-common.postgres
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(:require
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[clojure.spec.alpha :as s]
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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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[dda.c4k-common.yaml :as yaml]
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[dda.c4k-common.base64 :as b64]
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[dda.c4k-common.predicate :as cp]
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[dda.c4k-common.common :as cm]))
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(defn postgres-size?
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[input]
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(contains? #{:2gb :4gb :8gb :16gb} input))
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(defn postgres-image?
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[input]
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(contains? #{"postgres:13" "postgres:14"} input))
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(s/def ::postgres-db-user cp/bash-env-string?)
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(s/def ::postgres-db-password cp/bash-env-string?)
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(s/def ::postgres-data-volume-path string?)
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(s/def ::postgres-size postgres-size?)
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(s/def ::db-name cp/bash-env-string?)
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(s/def ::pvc-storage-class-name cp/pvc-storage-class-name?)
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(s/def ::pv-storage-size-gb pos?)
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(defn pg-config? [input]
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(s/keys :opt-un [::postgres-size ::db-name ::postgres-data-volume-path
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::pvc-storage-class-name ::pv-storage-size-gb]))
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(defn pg-auth? [input]
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(s/keys :opt-un [::postgres-db-user ::postgres-db-password]))
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(def postgres-function (s/keys :opt-un [::deserializer ::optional]))
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#?(:cljs
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(defmethod yaml/load-resource :postgres [resource-name]
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(case resource-name
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"postgres/config-2gb.yaml" (rc/inline "postgres/config-2gb.yaml")
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"postgres/config-4gb.yaml" (rc/inline "postgres/config-4gb.yaml")
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"postgres/config-8gb.yaml" (rc/inline "postgres/config-8gb.yaml")
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"postgres/config-16gb.yaml" (rc/inline "postgres/config-16gb.yaml")
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"postgres/deployment.yaml" (rc/inline "postgres/deployment.yaml")
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"postgres/persistent-volume.yaml" (rc/inline "postgres/persistent-volume.yaml")
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"postgres/pvc.yaml" (rc/inline "postgres/pvc.yaml")
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"postgres/secret.yaml" (rc/inline "postgres/secret.yaml")
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"postgres/service.yaml" (rc/inline "postgres/service.yaml")
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(throw (js/Error. "Undefined Resource!")))))
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(defn-spec generate-config cp/map-or-seq?
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[& config (s/? pg-config?)]
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(let [{:keys [postgres-size db-name]
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:or {postgres-size :2gb
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db-name "postgres"}} (first config)]
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(->
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(yaml/from-string (yaml/load-resource
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(str "postgres/config-" (name postgres-size) ".yaml")))
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(assoc-in [:data :postgres-db] db-name))))
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; TODO: why do we need a sequence of configs?
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(defn-spec generate-deployment cp/map-or-seq?
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[& config (s/? pg-config?)]
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(let [{:keys [postgres-image]
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:or {postgres-image "postgres:13"}} (first config)]
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(->
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(yaml/from-string (yaml/load-resource "postgres/deployment.yaml"))
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(assoc-in [:spec :template :spec :containers 0 :image] postgres-image))))
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(defn-spec generate-persistent-volume cp/map-or-seq?
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[config pg-config?]
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(let [{:keys [postgres-data-volume-path pv-storage-size-gb]
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:or {postgres-data-volume-path "/var/postgres"
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pv-storage-size-gb 10}} config]
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(->
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(yaml/from-string (yaml/load-resource "postgres/persistent-volume.yaml"))
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(assoc-in [:spec :hostPath :path] postgres-data-volume-path)
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(assoc-in [:spec :capacity :storage] (str pv-storage-size-gb "Gi")))))
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(defn-spec generate-pvc cp/map-or-seq?
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[config pg-config?]
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(let [{:keys [pv-storage-size-gb pvc-storage-class-name]
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:or {pv-storage-size-gb 10
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pvc-storage-class-name :manual}} config]
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(->
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(yaml/from-string (yaml/load-resource "postgres/pvc.yaml"))
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(assoc-in [:spec :resources :requests :storage] (str pv-storage-size-gb "Gi"))
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(assoc-in [:spec :storageClassName] (name pvc-storage-class-name)))))
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(defn-spec generate-secret cp/map-or-seq?
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[my-auth any?]
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(let [{:keys [postgres-db-user postgres-db-password]} my-auth]
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(->
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(yaml/from-string (yaml/load-resource "postgres/secret.yaml"))
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(cm/replace-key-value :postgres-user (b64/encode postgres-db-user))
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(cm/replace-key-value :postgres-password (b64/encode postgres-db-password)))))
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(defn-spec generate-service cp/map-or-seq?
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[]
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(yaml/from-string (yaml/load-resource "postgres/service.yaml")))
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