Configurable storage sizes

Storage sizes can now be configured.
Due to limitations of yaml/load-as-edn volumes.yaml was
split into datavolume.yaml and rootvolume.yaml. This
way, we are able to follow volume size recommendations
described in jira.
Valid config was updated. Tests were updated.

src/main/cljc/dda/c4k_gitea/core.cljc

@@ -7,11 +7,10 @@
 
 (defn k8s-objects [config]
   (let [storage-class (if (contains? config :postgres-data-volume-path) :manual :local-path)]
-    (cm/concat-vec
-     [(yaml/load-resource "gitea/volumes.yaml")      
+    (cm/concat-vec     
       (yaml/load-resource "gitea/deployment.yaml")
       (yaml/load-resource "gitea/services.yaml")
-      (yaml/load-resource "gitea/traefik-middleware.yaml")]
+      (yaml/load-resource "gitea/traefik-middleware.yaml")
      
      (map yaml/to-string
           [(postgres/generate-config {:postgres-size :2gb :db-name "gitea"})
@@ -23,6 +22,7 @@
            (postgres/generate-deployment {:postgres-image "postgres:14"
                                           :postgres-size :2gb})
            (postgres/generate-service)
+           (gitea/generate-volumes config)
            (gitea/generate-appini-env config)
            (gitea/generate-secrets config)
            (gitea/generate-ingress config)

src/main/cljc/dda/c4k_gitea/gitea.cljc

@@ -1,8 +1,6 @@
 (ns dda.c4k-gitea.gitea
   (:require
-   [clojure.spec.alpha :as s]
-   [clojure.string :as str]
-   [clojure.core :as c]
+   [clojure.spec.alpha :as s]   
    #?(:cljs [shadow.resource :as rc])
    #?(:clj [orchestra.core :refer [defn-spec]]
       :cljs [orchestra.core :refer-macros [defn-spec]])
@@ -23,14 +21,38 @@
 (s/def ::mailer-user pred/bash-env-string?)
 (s/def ::mailer-pw pred/bash-env-string?)
 (s/def ::issuer pred/letsencrypt-issuer?)
+(s/def ::volume-total-storage-size int?) ;TODO extend this for checking lower size limits
 
 (def config-defaults {:issuer "staging"})
 
-(def config? (s/keys :req-un [::fqdn ::mailer-from ::mailer-host-port ::service-noreply-address]
-                     :opt-un [::issuer ::default-app-name ::service-domain-whitelist]))
+(def config? (s/keys :req-un [::fqdn 
+                              ::mailer-from 
+                              ::mailer-host-port 
+                              ::service-noreply-address]
+                     :opt-un [::issuer 
+                              ::default-app-name 
+                              ::service-domain-whitelist]))
 
 (def auth? (s/keys :req-un [::postgres/postgres-db-user ::postgres/postgres-db-password ::mailer-user ::mailer-pw]))
 
+(def vol? (s/keys :req-un [::volume-total-storage-size]))
+
+(defn root-storage-by-volume-size
+  [in]
+  (cond
+    (<= in 5) (throw (Exception. "Volume smaller or equal 5Gi!\nIncrease volume-total-storage-size to value > 5"))
+    (and (> in 5) (<= in 20)) 5
+    (and (> in 20) (<= in 100)) 10
+    (> in 100) 20))
+
+(defn data-storage-by-volume-size
+  [total root]
+  (cond
+    (and (<= total 20) (> total 5)) (- total root)
+    (and (<= total 100) (> total 20)) (- total root)
+    (> total 100) (- total root)))
+
+
 #?(:cljs
    (defmethod yaml/load-resource :gitea [resource-name]
      (case resource-name
@@ -41,7 +63,8 @@
        "gitea/secrets.yaml" (rc/inline "gitea/secrets.yaml")
        "gitea/services.yaml" (rc/inline "gitea/services.yaml")
        "gitea/traefik-middleware.yaml" (rc/inline "gitea/traefik-middleware.yaml")
-       "gitea/volumes.yaml" (rc/inline "gitea/volumes.yaml")
+       "gitea/rootvolume.yaml" (rc/inline "gitea/rootvolume.yaml")
+       "gitea/datavolume.yaml" (rc/inline "gitea/datavolume.yaml")
        (throw (js/Error. "Undefined Resource!")))))
 
 #?(:cljs
@@ -71,7 +94,10 @@
 
 (defn-spec generate-secrets pred/map-or-seq?
   [auth auth?]
-  (let [{:keys [postgres-db-user postgres-db-password mailer-user mailer-pw]} auth]
+  (let [{:keys [postgres-db-user 
+                postgres-db-password 
+                mailer-user 
+                mailer-pw]} auth]
     (->
      (yaml/load-as-edn "gitea/secrets.yaml")
      (cm/replace-all-matching-values-by-new-value "DBUSER" (b64/encode postgres-db-user))
@@ -96,3 +122,19 @@
      (assoc-in [:spec :issuerRef :name] letsencrypt-issuer)
      (cm/replace-all-matching-values-by-new-value "FQDN" fqdn))))
 
+(defn-spec generate-root-volume pred/map-or-seq?
+  [config vol?]
+  (let [{:keys [volume-total-storage-size]} config
+        root-storage-size (root-storage-by-volume-size volume-total-storage-size)]
+    (->
+     (yaml/load-as-edn "gitea/rootvolume.yaml")
+     (cm/replace-all-matching-values-by-new-value "ROOTSTORAGESIZE" (str (str root-storage-size) "Gi")))))
+
+(defn-spec generate-data-volume pred/map-or-seq?
+  [config vol?]
+  (let [{:keys [volume-total-storage-size]} config
+        root-storage-size (root-storage-by-volume-size volume-total-storage-size)
+        data-storage-size (data-storage-by-volume-size volume-total-storage-size root-storage-size)]
+    (->     
+     (yaml/load-as-edn "gitea/datavolume.yaml")
+     (cm/replace-all-matching-values-by-new-value "DATASTORAGESIZE" (str (str data-storage-size) "Gi")))))

src/main/resources/gitea/datavolume.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: gitea-data-pvc
+  namespace: default
+  labels:
+    app: gitea
+spec:
+  storageClassName: local-path
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:      
+      storage: DATASTORAGESIZE
+      

src/main/resources/gitea/rootvolume.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: gitea-root-pvc
+  namespace: default
+  labels:
+    app: gitea
+spec:
+  storageClassName: local-path
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: ROOTSTORAGESIZE

src/main/resources/gitea/volumes.yaml

@@ -1,30 +0,0 @@
-apiVersion: v1
-kind: PersistentVolumeClaim
-metadata:
-  name: gitea-root-pvc
-  namespace: default
-  labels:
-    app: gitea
-spec:
-  storageClassName: local-path
-  accessModes:
-    - ReadWriteOnce
-  resources:
-    requests:
-      storage: 10Gi
----
-apiVersion: v1
-kind: PersistentVolumeClaim
-metadata:
-  name: gitea-data-pvc
-  namespace: default
-  labels:
-    app: gitea
-spec:
-  storageClassName: local-path
-  accessModes:
-    - ReadWriteOnce
-  resources:
-    requests:
-      # TODO: Review jem - 2022/07/26 - should be configurable & as large as posible ...
-      storage: 50Gi

src/test/cljc/dda/c4k_gitea/gitea_test.cljc

@@ -66,3 +66,14 @@
                                              :mailer-user "maileruser"
                                              :mailer-pw "mailerpw"})))))
 
+(deftest should-generate-root-volume
+  (is (= {:storage-c1 "5Gi",
+          :storage-c2 "20Gi"}
+         (ct/map-diff (cut/generate-root-volume {:volume-total-storage-size 6})
+                      (cut/generate-root-volume {:volume-total-storage-size 101})))))
+
+(deftest should-generate-data-volume
+  (is (= {:storage-c1 "1Gi",
+          :storage-c2 "15Gi"}
+         (ct/map-diff (cut/generate-data-volume {:volume-total-storage-size 6})
+                      (cut/generate-data-volume {:volume-total-storage-size 20})))))

valid-config.edn

@@ -6,4 +6,5 @@
 :mailer-host-port "test.de:123"
 :service-whitelist-domains "test.de"
 :service-noreply-address "noreply@test.de"
+:volume-total-storage-size 6
  }