From 37c777e9bca860abcee3d36f9148da3d9f4aa47a Mon Sep 17 00:00:00 2001
From: Jan Fajerski <jan--f@users.noreply.github.com>
Date: Fri, 15 Jul 2022 04:14:25 +0200
Subject: [PATCH] feat: add option to pass EnableRemoteWriteReceiver to
 Prometheus CR

Fixes: https://github.com/rhobs/observability-operator/issues/160

Signed-off-by: Jan Fajerski <jfajersk@redhat.com>
---
 deploy/crds/common/monitoring.rhobs_monitoringstacks.yaml | 4 ++++
 docs/api.md                                               | 7 +++++++
 pkg/apis/monitoring/v1alpha1/types.go                     | 3 +++
 pkg/controllers/monitoring/monitoring-stack/components.go | 5 +++--
 4 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/deploy/crds/common/monitoring.rhobs_monitoringstacks.yaml b/deploy/crds/common/monitoring.rhobs_monitoringstacks.yaml
index c1163438..76beaa8c 100644
--- a/deploy/crds/common/monitoring.rhobs_monitoringstacks.yaml
+++ b/deploy/crds/common/monitoring.rhobs_monitoringstacks.yaml
@@ -49,6 +49,10 @@ spec:
                   replicas: 2
                 description: Define prometheus config
                 properties:
+                  enableRemoteWriteReceiver:
+                    description: Enable Prometheus to be used as a receiver for the
+                      Prometheus remote write protocol. Defaults to the value of `false`.
+                    type: boolean
                   externalLabels:
                     additionalProperties:
                       type: string
diff --git a/docs/api.md b/docs/api.md
index ca480078..f1e81d44 100644
--- a/docs/api.md
+++ b/docs/api.md
@@ -150,6 +150,13 @@ Define prometheus config
         </tr>
     </thead>
     <tbody><tr>
+        <td><b>enableRemoteWriteReceiver</b></td>
+        <td>boolean</td>
+        <td>
+          Enable Prometheus to be used as a receiver for the Prometheus remote write protocol. Defaults to the value of `false`.<br/>
+        </td>
+        <td>false</td>
+      </tr><tr>
         <td><b>externalLabels</b></td>
         <td>map[string]string</td>
         <td>
diff --git a/pkg/apis/monitoring/v1alpha1/types.go b/pkg/apis/monitoring/v1alpha1/types.go
index a48031e9..7e8a131f 100644
--- a/pkg/apis/monitoring/v1alpha1/types.go
+++ b/pkg/apis/monitoring/v1alpha1/types.go
@@ -96,6 +96,9 @@ type PrometheusConfig struct {
 	// Define ExternalLabels for prometheus
 	// +optional
 	ExternalLabels map[string]string `json:"externalLabels,omitempty"`
+	// Enable Prometheus to be used as a receiver for the Prometheus remote write protocol. Defaults to the value of `false`.
+	// +optional
+	EnableRemoteWriteReceiver bool `json:"enableRemoteWriteReceiver,omitempty"`
 }
 
 // NamespaceSelector is a selector for selecting either all namespaces or a
diff --git a/pkg/controllers/monitoring/monitoring-stack/components.go b/pkg/controllers/monitoring/monitoring-stack/components.go
index 151520fe..2bf1bffe 100644
--- a/pkg/controllers/monitoring/monitoring-stack/components.go
+++ b/pkg/controllers/monitoring/monitoring-stack/components.go
@@ -180,8 +180,9 @@ func newPrometheus(
 					RunAsNonRoot: pointer.Bool(true),
 					RunAsUser:    pointer.Int64(PrometheusUserFSGroupID),
 				},
-				RemoteWrite:    config.RemoteWrite,
-				ExternalLabels: config.ExternalLabels,
+				RemoteWrite:               config.RemoteWrite,
+				ExternalLabels:            config.ExternalLabels,
+				EnableRemoteWriteReceiver: config.EnableRemoteWriteReceiver,
 			},
 			Retention:             ms.Spec.Retention,
 			RuleSelector:          prometheusSelector,