*: add test of mixin addition in examples/; change config to _config in addMixin to be consistent with main components

examples/mixin-inclusion.jsonnet

@@ -0,0 +1,30 @@
+local addMixin = (import 'kube-prometheus/lib/mixin.libsonnet');
+local etcdMixin = addMixin({
+  name: 'etcd',
+  mixin: (import 'github.com/etcd-io/etcd/contrib/mixin/mixin.libsonnet') + {
+    _config+: {},  // mixin configuration object
+  },
+});
+
+local kp = (import 'kube-prometheus/main.libsonnet') +
+           {
+             values+:: {
+               common+: {
+                 namespace: 'monitoring',
+               },
+               grafana+: {
+                 // Adding new dashboard to grafana. This will modify grafana configMap with dashboards
+                 dashboards+: etcdMixin.grafanaDashboards,
+               },
+             },
+           };
+
+{ ['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) } +
+{ ['node-exporter-' + name]: kp.nodeExporter[name] for name in std.objectFields(kp.nodeExporter) } +
+{ ['kube-state-metrics-' + name]: kp.kubeStateMetrics[name] for name in std.objectFields(kp.kubeStateMetrics) } +
+{ ['alertmanager-' + name]: kp.alertmanager[name] for name in std.objectFields(kp.alertmanager) } +
+{ ['prometheus-' + name]: kp.prometheus[name] for name in std.objectFields(kp.prometheus) } +
+{ ['grafana-' + name]: kp.grafana[name] for name in std.objectFields(kp.grafana) } +
+// Rendering prometheusRules object. This is an object compatible with prometheus-operator CRD definition for prometheusRule
+{ 'external-mixins/etcd-mixin-prometheus-rules': etcdMixin.prometheusRules }

jsonnet/kube-prometheus/lib/mixin.libsonnet

@@ -8,29 +8,29 @@ local defaults = {
 };
 
 function(params) {
-  config:: defaults + params,
+  _config:: defaults + params,
 
   local m = self,
 
-  local prometheusRules = if std.objectHasAll(m.config.mixin, 'prometheusRules') || std.objectHasAll(m.config.mixin, 'prometheusAlerts') then {
+  local prometheusRules = if std.objectHasAll(m._config.mixin, 'prometheusRules') || std.objectHasAll(m._config.mixin, 'prometheusAlerts') then {
     apiVersion: 'monitoring.coreos.com/v1',
     kind: 'PrometheusRule',
     metadata: {
-      labels: m.config.labels,
-      name: m.config.name,
-      namespace: m.config.namespace,
+      labels: m._config.labels,
+      name: m._config.name,
+      namespace: m._config.namespace,
     },
     spec: {
-      local r = if std.objectHasAll(m.config.mixin, 'prometheusRules') then m.config.mixin.prometheusRules.groups else [],
-      local a = if std.objectHasAll(m.config.mixin, 'prometheusAlerts') then m.config.mixin.prometheusAlerts.groups else [],
+      local r = if std.objectHasAll(m._config.mixin, 'prometheusRules') then m._config.mixin.prometheusRules.groups else [],
+      local a = if std.objectHasAll(m._config.mixin, 'prometheusAlerts') then m._config.mixin.prometheusAlerts.groups else [],
       groups: a + r,
     },
   },
 
-  local grafanaDashboards = if std.objectHasAll(m.config.mixin, 'grafanaDashboards') then (
-    if std.objectHas(m.config, 'dashboardFolder') then {
-      [m.config.dashboardFolder]+: m.config.mixin.grafanaDashboards,
-    } else (m.config.mixin.grafanaDashboards)
+  local grafanaDashboards = if std.objectHasAll(m._config.mixin, 'grafanaDashboards') then (
+    if std.objectHas(m._config, 'dashboardFolder') then {
+      [m._config.dashboardFolder]+: m._config.mixin.grafanaDashboards,
+    } else (m._config.mixin.grafanaDashboards)
   ),
 
   prometheusRules: prometheusRules,