introduce size dependand postgres-sizings

project-cljs.clj

@@ -1,4 +1,4 @@
-(defproject org.domaindrivenarchitecture/c4k-common-cljs "0.2.11-SNAPSHOT"
+(defproject org.domaindrivenarchitecture/c4k-common-cljs "0.3.0-SNAPSHOT"
   :description "Contains predicates and tools for c4k"
   :url "https://domaindrivenarchitecture.org"
   :license {:name "Apache License, Version 2.0"

project.clj

@@ -1,4 +1,4 @@
-(defproject org.domaindrivenarchitecture/c4k-common-clj "0.2.11-SNAPSHOT"
+(defproject org.domaindrivenarchitecture/c4k-common-clj "0.3.0-SNAPSHOT"
   :description "Contains predicates and tools for c4k"
   :url "https://domaindrivenarchitecture.org"
   :license {:name "Apache License, Version 2.0"

src/main/cljc/dda/c4k_common/postgres.cljc

@@ -6,14 +6,22 @@
    [dda.c4k-common.base64 :as b64]
    [dda.c4k-common.common :as cm]))
 
+(defn postgres-size?
+  [input]
+  (contains? #{:2gb :4gb :8gb :16gb} input))
+
 (s/def ::postgres-db-user cm/bash-env-string?)
 (s/def ::postgres-db-password cm/bash-env-string?)
 (s/def ::postgres-data-volume-path string?)
+(s/def ::postgres-size postgres-size?)
 
 #?(:cljs
    (defmethod yaml/load-resource :postgres [resource-name]
      (case resource-name
-       "postgres/config.yaml" (rc/inline "postgres/config.yaml")
+       "postgres/config-2gb.yaml" (rc/inline "postgres/config-2gb.yaml")
+       "postgres/config-4gb.yaml" (rc/inline "postgres/config-4gb.yaml")
+       "postgres/config-8gb.yaml" (rc/inline "postgres/config-8gb.yaml")
+       "postgres/config-16gb.yaml" (rc/inline "postgres/config-16gb.yaml")
        "postgres/deployment.yaml" (rc/inline "postgres/deployment.yaml")
        "postgres/persistent-volume.yaml" (rc/inline "postgres/persistent-volume.yaml")
        "postgres/pvc.yaml" (rc/inline "postgres/pvc.yaml")
@@ -21,8 +29,10 @@
        "postgres/service.yaml" (rc/inline "postgres/service.yaml")
        (throw (js/Error. "Undefined Resource!")))))
 
-(defn generate-config []
-  (yaml/from-string (yaml/load-resource "postgres/config.yaml")))
+(defn generate-config [& args]
+  (let [{:keys [postgres-size]
+         :or {postgres-size :2gb}} args]
+    (yaml/from-string (yaml/load-resource (str "postgres/config-" (name postgres-size) ".yaml")))))
 
 (defn generate-deployment []
   (yaml/from-string (yaml/load-resource "postgres/deployment.yaml")))

src/main/resources/postgres/config-16gb.yaml

@@ -5,7 +5,7 @@ metadata:
   labels:
     app: postgres
 data:
-  postgres-db: jira
   postgresql.conf: |
     max_connections = 1000
+    work_mem = 4MB
     shared_buffers = 512MB

src/main/resources/postgres/config-2gb.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: postgres-config
+  labels:
+    app: postgres
+data:
+  postgresql.conf: |
+    max_connections = 100
+    work_mem = 4MB
+    shared_buffers = 128MB

src/main/resources/postgres/config-4gb.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: postgres-config
+  labels:
+    app: postgres
+data:
+  postgresql.conf: |
+    max_connections = 500
+    work_mem = 2MB
+    shared_buffers = 256MB

src/main/resources/postgres/config-8gb.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: postgres-config
+  labels:
+    app: postgres
+data:
+  postgresql.conf: |
+    max_connections = 700
+    work_mem = 3MB
+    shared_buffers = 512MB

src/test/cljc/dda/c4k_common/postgres_test.cljc

@@ -4,6 +4,15 @@
       :cljs [cljs.test :refer-macros [deftest is are testing run-tests]])
    [dda.c4k-common.postgres :as cut]))
 
+(deftest should-generate-config
+  (is (= {:postgresql.conf
+          "max_connections = 100\nwork_mem = 4MB\nshared_buffers = 128MB\n"}
+         (:data (cut/generate-config))))
+  (is (= {:postgresql.conf
+          "max_connections = 700\nwork_mem = 3MB\nshared_buffers = 512MB\n"}
+         (:data (cut/generate-config :postgres-size :8gb))))
+  )
+
 (deftest should-generate-persistent-volume
   (is (= {:kind "PersistentVolume"
           :apiVersion "v1"