feat: update prometheus-operator dependency in go.mod (#140)

* feat: update prometheus-operator dependency in go.mod

This updates the prometheus-operator go dependency to v0.55.0. This
allows specifiying additional auth options in remote_write sections.

Signed-off-by: Jan Fajerski <jfajersk@redhat.com>

* fix: adjust usage of PrometheusSpec type

Problem: Embedded structs can as of yet not be directly referenced in struct
literals.

Solution: Explicitly use the embedded structs.

Issues: golang/go#9859,
prometheus-operator/prometheus-operator#4539

Signed-off-by: Jan Fajerski <jfajersk@redhat.com>

* refactor: generate dependencies from prometheus-operator repo

There is no need to track the prometheus-operator dependencies, they can
just be generated from the upstream artifacts.

Signed-off-by: Jan Fajerski <jfajersk@redhat.com>

* feat: bump prometheus-operator dependency to v0.55.1

Signed-off-by: Jan Fajerski <jfajersk@redhat.com>

* refactor: generate monitoring related CRD manifests

This adds a Makefile target to generate the prometheus-operator related
CRD manifests with controller-gen. For this controller-gen will respect
the prometheus-operator version specified in go.mod.

Signed-off-by: Jan Fajerski <jfajersk@redhat.com>

Makefile

@@ -61,8 +61,18 @@ docs: $(CRDOC)
 	mkdir -p docs
 	$(CRDOC) --resources deploy/crds/common --output docs/api.md
 
+# This generates the prometheus-operator CRD manifests from the
+# prometheus-operator dependency defined in go.mod. This ensures we carry the
+# correct version of the CRD manifests.
+.PHONY: generate-prom-op-crds
+generate-prom-operator-crds: $(CONTROLLER_GEN)
+	$(CONTROLLER_GEN) crd \
+		paths=github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/... \
+		output:dir=. \
+		output:crd:dir=./deploy/crds/kubernetes
+
 .PHONY: generate-crds
-generate-crds: $(CONTROLLER_GEN)
+generate-crds: $(CONTROLLER_GEN) generate-prom-op-crds
 	$(CONTROLLER_GEN) crd \
 		paths=./pkg/apis/... \
 		paths=./pkg/controllers/... \

deploy/crds/kubernetes/kustomization.yaml

@@ -1,11 +1,11 @@
 ---
 resources:
-  - ../common
-  - alertmanagerconfigs.yaml
-  - alertmanagers.yaml
-  - podmonitors.yaml
-  - probes.yaml
-  - prometheuses.yaml
-  - prometheusrules.yaml
-  - servicemonitors.yaml
-  - thanosrulers.yaml
+ - ../common
+ - monitoring.coreos.com_alertmanagerconfigs.yaml
+ - monitoring.coreos.com_alertmanagers.yaml
+ - monitoring.coreos.com_podmonitors.yaml
+ - monitoring.coreos.com_probes.yaml
+ - monitoring.coreos.com_prometheuses.yaml
+ - monitoring.coreos.com_prometheusrules.yaml
+ - monitoring.coreos.com_servicemonitors.yaml
+ - monitoring.coreos.com_thanosrulers.yaml

deploy/crds/kubernetes/monitoring.coreos.com_prometheusrules.yaml

@@ -0,0 +1,102 @@
+
+---
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.7.0
+  creationTimestamp: null
+  name: prometheusrules.monitoring.coreos.com
+spec:
+  group: monitoring.coreos.com
+  names:
+    categories:
+    - prometheus-operator
+    kind: PrometheusRule
+    listKind: PrometheusRuleList
+    plural: prometheusrules
+    singular: prometheusrule
+  scope: Namespaced
+  versions:
+  - name: v1
+    schema:
+      openAPIV3Schema:
+        description: PrometheusRule defines recording and alerting rules for a Prometheus
+          instance
+        properties:
+          apiVersion:
+            description: 'APIVersion defines the versioned schema of this representation
+              of an object. Servers should convert recognized schemas to the latest
+              internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'
+            type: string
+          kind:
+            description: 'Kind is a string value representing the REST resource this
+              object represents. Servers may infer this from the endpoint the client
+              submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'
+            type: string
+          metadata:
+            type: object
+          spec:
+            description: Specification of desired alerting rule definitions for Prometheus.
+            properties:
+              groups:
+                description: Content of Prometheus rule file
+                items:
+                  description: 'RuleGroup is a list of sequentially evaluated recording
+                    and alerting rules. Note: PartialResponseStrategy is only used
+                    by ThanosRuler and will be ignored by Prometheus instances.  Valid
+                    values for this field are ''warn'' or ''abort''.  More info: https://github.com/thanos-io/thanos/blob/main/docs/components/rule.md#partial-response'
+                  properties:
+                    interval:
+                      type: string
+                    name:
+                      type: string
+                    partial_response_strategy:
+                      type: string
+                    rules:
+                      items:
+                        description: 'Rule describes an alerting or recording rule
+                          See Prometheus documentation: [alerting](https://www.prometheus.io/docs/prometheus/latest/configuration/alerting_rules/)
+                          or [recording](https://www.prometheus.io/docs/prometheus/latest/configuration/recording_rules/#recording-rules)
+                          rule'
+                        properties:
+                          alert:
+                            type: string
+                          annotations:
+                            additionalProperties:
+                              type: string
+                            type: object
+                          expr:
+                            anyOf:
+                            - type: integer
+                            - type: string
+                            x-kubernetes-int-or-string: true
+                          for:
+                            type: string
+                          labels:
+                            additionalProperties:
+                              type: string
+                            type: object
+                          record:
+                            type: string
+                        required:
+                        - expr
+                        type: object
+                      type: array
+                  required:
+                  - name
+                  - rules
+                  type: object
+                type: array
+            type: object
+        required:
+        - spec
+        type: object
+    served: true
+    storage: true
+status:
+  acceptedNames:
+    kind: ""
+    plural: ""
+  conditions: []
+  storedVersions: []