Merge dynamic_loading branch

main.jsonnet

@@ -1,6 +1,14 @@
 local k = import 'ksonnet/ksonnet.beta.3/k.libsonnet';
 local vars = import 'vars.jsonnet';
 
+local join_objects(objs) =
+  local aux(arr, i, running) =
+    if i >= std.length(arr) then
+      running
+    else
+      aux(arr, i + 1, running + arr[i]) tailstrict;
+  aux(objs, 0, {});
+
 local kp = (import 'kube-prometheus/kube-prometheus.libsonnet')
            + (import 'kube-prometheus/kube-prometheus-anti-affinity.libsonnet')
            + (import 'kube-prometheus/kube-prometheus-kops-coredns.libsonnet')
@@ -9,33 +17,26 @@ local kp = (import 'kube-prometheus/kube-prometheus.libsonnet')
            + (import 'kube-prometheus/kube-prometheus-insecure-kubelet.libsonnet')
            + (import 'base_operator_stack.jsonnet')
            + (import 'smtp_server.jsonnet')
-           // Additional Modules
+           // Additional modules are loaded dynamically from vars.jsonnet
-           + (if vars.installModules['arm-exporter'] then (import 'arm_exporter.jsonnet') else {})
+           + join_objects([module.file for module in vars.modules if module.enabled])
-           + (if vars.installModules['metallb-exporter'] then (import 'metallb.jsonnet') else {})
-           + (if vars.installModules['traefik-exporter'] then (import 'traefik.jsonnet') else {})
-           + (if vars.installModules['ups-exporter'] then (import 'ups_exporter.jsonnet') else {})
-           + (if vars.installModules['elastic-exporter'] then (import 'elasticsearch_exporter.jsonnet') else {})
            // Load image versions last to override default from modules
            + (import 'image_sources_versions.jsonnet');
 
+// Generate core modules
 { ['00namespace-' + name]: kp.kubePrometheus[name] for name in std.objectFields(kp.kubePrometheus) }
-{ ['0prometheus-operator-' + name]: kp.prometheusOperator[name] for name in std.objectFields(kp.prometheusOperator) } +
+{ ['0prometheus-operator-' + name]: kp.prometheusOperator[name] for name in std.objectFields(kp.prometheusOperator) }
-{ ['prometheus-adapter-' + name]: kp.prometheusAdapter[name] for name in std.objectFields(kp.prometheusAdapter) } +
+{ ['prometheus-adapter-' + name]: kp.prometheusAdapter[name] for name in std.objectFields(kp.prometheusAdapter) }
-{ ['prometheus-' + name]: kp.prometheus[name] for name in std.objectFields(kp.prometheus) } +
+{ ['prometheus-' + name]: kp.prometheus[name] for name in std.objectFields(kp.prometheus) }
-{ ['alertmanager-' + name]: kp.alertmanager[name] for name in std.objectFields(kp.alertmanager) } +
+{ ['alertmanager-' + name]: kp.alertmanager[name] for name in std.objectFields(kp.alertmanager) }
-{ ['kube-state-metrics-' + name]: kp.kubeStateMetrics[name] for name in std.objectFields(kp.kubeStateMetrics) } +
+{ ['kube-state-metrics-' + name]: kp.kubeStateMetrics[name] for name in std.objectFields(kp.kubeStateMetrics) }
-{ ['node-exporter-' + name]: kp.nodeExporter[name] for name in std.objectFields(kp.nodeExporter) } +
+{ ['node-exporter-' + name]: kp.nodeExporter[name] for name in std.objectFields(kp.nodeExporter) }
-{ ['grafana-' + name]: kp.grafana[name] for name in std.objectFields(kp.grafana) } +
+{ ['grafana-' + name]: kp.grafana[name] for name in std.objectFields(kp.grafana) }
-{ ['ingress-' + name]: kp.ingress[name] for name in std.objectFields(kp.ingress) } +
+{ ['ingress-' + name]: kp.ingress[name] for name in std.objectFields(kp.ingress) }
-{ ['smtp-server-' + name]: kp.smtpServer[name] for name in std.objectFields(kp.smtpServer) } +
+{ ['smtp-server-' + name]: kp.smtpServer[name] for name in std.objectFields(kp.smtpServer) }
-// Additional Modules
+
-(if vars.installModules['arm-exporter'] then
+{  // Dynamically generate additional modules from vars.jsonnet
-   { ['arm-exporter-' + name]: kp.armExporter[name] for name in std.objectFields(kp.armExporter) } else {}) +
+  [std.asciiLower(module.name) + '-' + name]: kp[module.name][name]
-(if vars.installModules['metallb-exporter'] then
+  for module in vars.modules
-   { ['metallb-' + name]: kp.metallb[name] for name in std.objectFields(kp.metallb) } else {}) +
+  if module.enabled
-(if vars.installModules['traefik-exporter'] then
+  for name in std.objectFields(kp[module.name])
-   { ['traefik-' + name]: kp.traefik[name] for name in std.objectFields(kp.traefik) } else {}) +
+}
-(if vars.installModules['ups-exporter'] then
-   { ['ups-exporter-' + name]: kp.upsExporter[name] for name in std.objectFields(kp.upsExporter) } else {}) +
-(if vars.installModules['elastic-exporter'] then
-   { ['elasticexporter-' + name]: kp.elasticExporter[name] for name in std.objectFields(kp.elasticExporter) } else {})

metallb.jsonnet

@@ -10,7 +10,7 @@ local k = import 'ksonnet/ksonnet.beta.3/k.libsonnet';
 
   },
 
-  metallb+:: {
+  metallbExporter+:: {
     serviceMonitor:
       {
         apiVersion: 'monitoring.coreos.com/v1',

traefik.jsonnet

@@ -9,7 +9,7 @@ local k = import 'ksonnet/ksonnet.beta.3/k.libsonnet';
     },
   },
 
-  traefik+:: {
+  traefikExporter+:: {
     serviceMonitor:
       {
         apiVersion: 'monitoring.coreos.com/v1',

vars.jsonnet

@@ -1,12 +1,32 @@
 {
   // Enable or disable additional modules
-  installModules: {
+  modules: [
-    'arm-exporter': false,
+    {
-    'metallb-exporter': false,
+      name: 'armExporter',
-    'traefik-exporter': false,
+      enabled: false,
-    'ups-exporter': false,
+      file: import 'arm_exporter.jsonnet',
-    'elastic-exporter': false,
     },
+    {
+      name: 'upsExporter',
+      enabled: false,
+      file: import 'ups_exporter.jsonnet',
+    },
+    {
+      name: 'metallbExporter',
+      enabled: false,
+      file: import 'metallb.jsonnet',
+    },
+    {
+      name: 'traefikExporter',
+      enabled: false,
+      file: import 'traefik.jsonnet',
+    },
+    {
+      name: 'elasticExporter',
+      enabled: false,
+      file: import 'elasticsearch_exporter.jsonnet',
+    },
+  ],
 
   // Setting these to false, defaults to emptyDirs
   enablePersistence: {