add tests for alloy-events in events-logger-config (#277)

* add tests for alloy-events in events-logger-config

* changelog

* create alloy-events tests golden files

CHANGELOG.md

@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add KubeEventsLogger option and related methods in loggedCLuster package.
 - Add `events-logger` flag in the operator.
 - Add toggle for `events-logger` in observability-bundle configmap.
+- Add tests for `alloy-events` in events-logger-config.
 
 ### Changed
 

pkg/resource/events-logger-config/alloy-events-config_test.go

@@ -0,0 +1,73 @@
+package eventsloggerconfig
+
+import (
+	_ "embed"
+	"os"
+	"path/filepath"
+	"testing"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	capi "sigs.k8s.io/cluster-api/api/v1beta1"
+
+	"github.com/google/go-cmp/cmp"
+
+	loggedcluster "github.com/giantswarm/logging-operator/pkg/logged-cluster"
+	"github.com/giantswarm/logging-operator/pkg/logged-cluster/capicluster"
+)
+
+func TestGenerateAlloyEventsConfig(t *testing.T) {
+	testCases := []struct {
+		goldenFile        string
+		defaultNamespaces []string
+		installationName  string
+		clusterName       string
+	}{
+		{
+			goldenFile:       "alloy/test/events-logger-config.alloy.MC.yaml",
+			installationName: "test-installation",
+			clusterName:      "test-installation",
+		},
+		{
+			goldenFile:       "alloy/test/events-logger-config.alloy.WC.yaml",
+			installationName: "test-installation",
+			clusterName:      "test-cluster",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(filepath.Base(tc.goldenFile), func(t *testing.T) {
+			golden, err := os.ReadFile(tc.goldenFile)
+			if err != nil {
+				t.Fatalf("Failed to read golden file: %v", err)
+			}
+
+			loggedCluster := &capicluster.Object{
+				Object: &capi.Cluster{
+					ObjectMeta: metav1.ObjectMeta{
+						Name: tc.clusterName,
+					},
+				},
+				Options: loggedcluster.Options{
+					InstallationName: tc.installationName,
+					KubeEventsLogger: "alloy",
+				},
+			}
+
+			config, err := generateAlloyEventsConfig(loggedCluster, []string{"kube-system", "giantswarm"})
+			if err != nil {
+				t.Fatalf("Failed to generate alloy config: %v", err)
+			}
+
+			if string(golden) != config {
+				t.Logf("Generated config differs from %s, diff:\n%s", tc.goldenFile, cmp.Diff(string(golden), config))
+				t.Fail()
+				if *update {
+					//nolint:gosec
+					if err := os.WriteFile(tc.goldenFile, []byte(config), 0644); err != nil {
+						t.Fatalf("Failed to update golden file: %v", err)
+					}
+				}
+			}
+		})
+	}
+}

pkg/resource/events-logger-config/alloy/test/events-logger-config.alloy.MC.yaml

@@ -0,0 +1,62 @@
+# This file was generated by logging-operator.
+# It configures Alloy to be used as events logger.
+# - configMap is generated from events-logger.alloy.template and passed as a string
+#   here and will be created by Alloy's chart.
+# - Alloy runs as a deployment, with only 1 replica.
+alloy:
+  alloy:
+    configMap:
+      create: true
+      content: |-
+        loki.source.kubernetes_events "local" {
+        	namespaces = []
+        	forward_to = [loki.write.default.receiver]
+        }
+        
+        // Loki target configuration
+        loki.write "default" {
+        	endpoint {
+        		url                = env("LOKI_URL")
+        		max_backoff_period = "10m"
+        		tenant_id          = env("TENANT_ID")
+        
+        		basic_auth {
+        			username = env("BASIC_AUTH_USERNAME")
+        			password = env("BASIC_AUTH_PASSWORD")
+        		}
+        
+        		tls_config {
+        			insecure_skip_verify = false
+        		}
+        	}
+        	external_labels = {
+        		cluster_id   = "test-installation",
+        		installation = "test-installation",
+        		scrape_job = "kubernetes-events",
+        	}
+        }
+        
+        logging {
+        	level  = "info"
+        	format = "logfmt"
+        }
+        
+    envFrom:
+    - secretRef:
+        name: alloy-events
+    securityContext:
+      allowPrivilegeEscalation: false
+      capabilities:
+        drop:
+        - ALL
+      readOnlyRootFilesystem: false
+      runAsUser: 10
+      runAsGroup: 10
+      runAsNonRoot: true
+      seccompProfile:
+        type: RuntimeDefault
+  controller:
+    type: deployment
+    replicas: 1
+  crds:
+    create: false

pkg/resource/events-logger-config/alloy/test/events-logger-config.alloy.WC.yaml

@@ -0,0 +1,62 @@
+# This file was generated by logging-operator.
+# It configures Alloy to be used as events logger.
+# - configMap is generated from events-logger.alloy.template and passed as a string
+#   here and will be created by Alloy's chart.
+# - Alloy runs as a deployment, with only 1 replica.
+alloy:
+  alloy:
+    configMap:
+      create: true
+      content: |-
+        loki.source.kubernetes_events "local" {
+        	namespaces = ["kube-system", "giantswarm"]
+        	forward_to = [loki.write.default.receiver]
+        }
+        
+        // Loki target configuration
+        loki.write "default" {
+        	endpoint {
+        		url                = env("LOKI_URL")
+        		max_backoff_period = "10m"
+        		tenant_id          = env("TENANT_ID")
+        
+        		basic_auth {
+        			username = env("BASIC_AUTH_USERNAME")
+        			password = env("BASIC_AUTH_PASSWORD")
+        		}
+        
+        		tls_config {
+        			insecure_skip_verify = false
+        		}
+        	}
+        	external_labels = {
+        		cluster_id   = "test-cluster",
+        		installation = "test-installation",
+        		scrape_job = "kubernetes-events",
+        	}
+        }
+        
+        logging {
+        	level  = "info"
+        	format = "logfmt"
+        }
+        
+    envFrom:
+    - secretRef:
+        name: alloy-events
+    securityContext:
+      allowPrivilegeEscalation: false
+      capabilities:
+        drop:
+        - ALL
+      readOnlyRootFilesystem: false
+      runAsUser: 10
+      runAsGroup: 10
+      runAsNonRoot: true
+      seccompProfile:
+        type: RuntimeDefault
+  controller:
+    type: deployment
+    replicas: 1
+  crds:
+    create: false