apachehttpd_test.go

// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package instrumentation

import (
	"testing"

	"github.com/go-logr/logr"
	"github.com/stretchr/testify/assert"
	semconv "go.opentelemetry.io/otel/semconv/v1.7.0"
	corev1 "k8s.io/api/core/v1"
	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"

	"github.com/open-telemetry/opentelemetry-operator/apis/v1alpha1"
)

func TestInjectApacheHttpdagent(t *testing.T) {
	tests := []struct {
		name string
		v1alpha1.ApacheHttpd
		pod      corev1.Pod
		expected corev1.Pod
	}{
		{
			name:        "Clone Container not present",
			ApacheHttpd: v1alpha1.ApacheHttpd{Image: "foo/bar:1"},
			pod: corev1.Pod{
				Spec: corev1.PodSpec{
					Containers: []corev1.Container{
						{},
					},
				},
			},
			expected: corev1.Pod{
				Spec: corev1.PodSpec{
					Volumes: []corev1.Volume{
						{
							Name: apacheAgentConfigVolume,
							VolumeSource: corev1.VolumeSource{
								EmptyDir: &corev1.EmptyDirVolumeSource{
									SizeLimit: &defaultVolumeLimitSize,
								},
							},
						},
						{
							Name: apacheAgentVolume,
							VolumeSource: corev1.VolumeSource{
								EmptyDir: &corev1.EmptyDirVolumeSource{
									SizeLimit: &defaultVolumeLimitSize,
								},
							},
						},
					},
					InitContainers: []corev1.Container{
						{
							Name:    apacheAgentCloneContainerName,
							Image:   "",
							Command: []string{"/bin/sh", "-c"},
							Args:    []string{"cp -r /usr/local/apache2/conf/* " + apacheAgentDirectory + apacheAgentConfigDirectory},
							VolumeMounts: []corev1.VolumeMount{{
								Name:      apacheAgentConfigVolume,
								MountPath: apacheAgentDirectory + apacheAgentConfigDirectory,
							}},
						},
						{
							Name:    apacheAgentInitContainerName,
							Image:   "foo/bar:1",
							Command: []string{"/bin/sh", "-c"},
							Args: []string{
								"cp -r /opt/opentelemetry/* /opt/opentelemetry-webserver/agent && export agentLogDir=$(echo \"/opt/opentelemetry-webserver/agent/logs\" | sed 's,/,\\\\/,g') && cat /opt/opentelemetry-webserver/agent/conf/opentelemetry_sdk_log4cxx.xml.template | sed 's/__agent_log_dir__/'${agentLogDir}'/g'  > /opt/opentelemetry-webserver/agent/conf/opentelemetry_sdk_log4cxx.xml &&echo \"$OTEL_APACHE_AGENT_CONF\" > /opt/opentelemetry-webserver/source-conf/opentemetry_agent.conf && sed -i 's/<<SID-PLACEHOLDER>>/'${APACHE_SERVICE_INSTANCE_ID}'/g' /opt/opentelemetry-webserver/source-conf/opentemetry_agent.conf && echo -e '\nInclude /usr/local/apache2/conf/opentemetry_agent.conf' >> /opt/opentelemetry-webserver/source-conf/httpd.conf"},
							Env: []corev1.EnvVar{
								{
									Name:  apacheAttributesEnvVar,
									Value: "\n#Load the Otel Webserver SDK\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_common.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_resources.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_trace.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_otlp_recordable.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_exporter_ostream_span.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_exporter_otlp_grpc.so\n#Load the Otel ApacheModule SDK\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_webserver_sdk.so\n#Load the Apache Module. In this example for Apache 2.4\n#LoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel.so\n#Load the Apache Module. In this example for Apache 2.2\n#LoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel22.so\nLoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel.so\n#Attributes\nApacheModuleEnabled ON\nApacheModuleOtelExporterEndpoint http://otlp-endpoint:4317\nApacheModuleOtelSpanExporter otlp\nApacheModuleResolveBackends  ON\nApacheModuleServiceInstanceId <<SID-PLACEHOLDER>>\nApacheModuleServiceName apache-httpd-service-name\nApacheModuleServiceNamespace req-namespace\nApacheModuleTraceAsError  ON\n",
								},
								{Name: apacheServiceInstanceIdEnvVar,
									ValueFrom: &corev1.EnvVarSource{
										FieldRef: &corev1.ObjectFieldSelector{
											FieldPath: "metadata.name",
										},
									},
								},
							},
							VolumeMounts: []corev1.VolumeMount{
								{
									Name:      apacheAgentVolume,
									MountPath: apacheAgentDirectory + apacheAgentSubDirectory,
								},
								{
									Name:      apacheAgentConfigVolume,
									MountPath: apacheAgentConfDirFull,
								},
							},
						},
					},
					Containers: []corev1.Container{
						{
							VolumeMounts: []corev1.VolumeMount{
								{
									Name:      apacheAgentVolume,
									MountPath: apacheAgentDirectory + apacheAgentSubDirectory,
								},
								{
									Name:      apacheAgentConfigVolume,
									MountPath: apacheDefaultConfigDirectory,
								},
							},
						},
					},
				},
			},
		},
		// === Test ConfigPath configuration =============================
		{
			name: "ConfigPath honored",
			ApacheHttpd: v1alpha1.ApacheHttpd{
				Image:      "foo/bar:1",
				ConfigPath: "/opt/customPath",
			},
			pod: corev1.Pod{
				Spec: corev1.PodSpec{
					Containers: []corev1.Container{
						{},
					},
				},
			},
			expected: corev1.Pod{
				Spec: corev1.PodSpec{
					Volumes: []corev1.Volume{
						{
							Name: apacheAgentConfigVolume,
							VolumeSource: corev1.VolumeSource{
								EmptyDir: &corev1.EmptyDirVolumeSource{
									SizeLimit: &defaultVolumeLimitSize,
								},
							},
						},
						{
							Name: apacheAgentVolume,
							VolumeSource: corev1.VolumeSource{
								EmptyDir: &corev1.EmptyDirVolumeSource{
									SizeLimit: &defaultVolumeLimitSize,
								},
							},
						},
					},
					InitContainers: []corev1.Container{
						{
							Name:    apacheAgentCloneContainerName,
							Image:   "",
							Command: []string{"/bin/sh", "-c"},
							Args:    []string{"cp -r /opt/customPath/* " + apacheAgentDirectory + apacheAgentConfigDirectory},
							VolumeMounts: []corev1.VolumeMount{{
								Name:      apacheAgentConfigVolume,
								MountPath: apacheAgentDirectory + apacheAgentConfigDirectory,
							}},
						},
						{
							Name:    apacheAgentInitContainerName,
							Image:   "foo/bar:1",
							Command: []string{"/bin/sh", "-c"},
							Args: []string{
								"cp -r /opt/opentelemetry/* /opt/opentelemetry-webserver/agent && export agentLogDir=$(echo \"/opt/opentelemetry-webserver/agent/logs\" | sed 's,/,\\\\/,g') && cat /opt/opentelemetry-webserver/agent/conf/opentelemetry_sdk_log4cxx.xml.template | sed 's/__agent_log_dir__/'${agentLogDir}'/g'  > /opt/opentelemetry-webserver/agent/conf/opentelemetry_sdk_log4cxx.xml &&echo \"$OTEL_APACHE_AGENT_CONF\" > /opt/opentelemetry-webserver/source-conf/opentemetry_agent.conf && sed -i 's/<<SID-PLACEHOLDER>>/'${APACHE_SERVICE_INSTANCE_ID}'/g' /opt/opentelemetry-webserver/source-conf/opentemetry_agent.conf && echo -e '\nInclude /opt/customPath/opentemetry_agent.conf' >> /opt/opentelemetry-webserver/source-conf/httpd.conf"},
							Env: []corev1.EnvVar{
								{
									Name:  apacheAttributesEnvVar,
									Value: "\n#Load the Otel Webserver SDK\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_common.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_resources.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_trace.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_otlp_recordable.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_exporter_ostream_span.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_exporter_otlp_grpc.so\n#Load the Otel ApacheModule SDK\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_webserver_sdk.so\n#Load the Apache Module. In this example for Apache 2.4\n#LoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel.so\n#Load the Apache Module. In this example for Apache 2.2\n#LoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel22.so\nLoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel.so\n#Attributes\nApacheModuleEnabled ON\nApacheModuleOtelExporterEndpoint http://otlp-endpoint:4317\nApacheModuleOtelSpanExporter otlp\nApacheModuleResolveBackends  ON\nApacheModuleServiceInstanceId <<SID-PLACEHOLDER>>\nApacheModuleServiceName apache-httpd-service-name\nApacheModuleServiceNamespace req-namespace\nApacheModuleTraceAsError  ON\n",
								},
								{Name: apacheServiceInstanceIdEnvVar,
									ValueFrom: &corev1.EnvVarSource{
										FieldRef: &corev1.ObjectFieldSelector{
											FieldPath: "metadata.name",
										},
									},
								},
							},
							VolumeMounts: []corev1.VolumeMount{
								{
									Name:      apacheAgentVolume,
									MountPath: apacheAgentDirectory + apacheAgentSubDirectory,
								},
								{
									Name:      apacheAgentConfigVolume,
									MountPath: apacheAgentConfDirFull,
								},
							},
						},
					},
					Containers: []corev1.Container{
						{
							VolumeMounts: []corev1.VolumeMount{
								{
									Name:      apacheAgentVolume,
									MountPath: apacheAgentDirectory + apacheAgentSubDirectory,
								},
								{
									Name:      apacheAgentConfigVolume,
									MountPath: "/opt/customPath",
								},
							},
						},
					},
				},
			},
		},
		// === Test Removal of probes and lifecycle =============================
		{
			name:        "Probes removed on clone init container",
			ApacheHttpd: v1alpha1.ApacheHttpd{Image: "foo/bar:1"},
			pod: corev1.Pod{
				Spec: corev1.PodSpec{
					Containers: []corev1.Container{
						{
							ReadinessProbe: &corev1.Probe{},
							StartupProbe:   &corev1.Probe{},
							LivenessProbe:  &corev1.Probe{},
							Lifecycle:      &corev1.Lifecycle{},
						},
					},
				},
			},
			expected: corev1.Pod{
				Spec: corev1.PodSpec{
					Volumes: []corev1.Volume{
						{
							Name: apacheAgentConfigVolume,
							VolumeSource: corev1.VolumeSource{
								EmptyDir: &corev1.EmptyDirVolumeSource{
									SizeLimit: &defaultVolumeLimitSize,
								},
							},
						},
						{
							Name: apacheAgentVolume,
							VolumeSource: corev1.VolumeSource{
								EmptyDir: &corev1.EmptyDirVolumeSource{
									SizeLimit: &defaultVolumeLimitSize,
								},
							},
						},
					},
					InitContainers: []corev1.Container{
						{
							Name:    apacheAgentCloneContainerName,
							Image:   "",
							Command: []string{"/bin/sh", "-c"},
							Args:    []string{"cp -r /usr/local/apache2/conf/* " + apacheAgentDirectory + apacheAgentConfigDirectory},
							VolumeMounts: []corev1.VolumeMount{{
								Name:      apacheAgentConfigVolume,
								MountPath: apacheAgentDirectory + apacheAgentConfigDirectory,
							}},
						},
						{
							Name:    apacheAgentInitContainerName,
							Image:   "foo/bar:1",
							Command: []string{"/bin/sh", "-c"},
							Args: []string{
								"cp -r /opt/opentelemetry/* /opt/opentelemetry-webserver/agent && export agentLogDir=$(echo \"/opt/opentelemetry-webserver/agent/logs\" | sed 's,/,\\\\/,g') && cat /opt/opentelemetry-webserver/agent/conf/opentelemetry_sdk_log4cxx.xml.template | sed 's/__agent_log_dir__/'${agentLogDir}'/g'  > /opt/opentelemetry-webserver/agent/conf/opentelemetry_sdk_log4cxx.xml &&echo \"$OTEL_APACHE_AGENT_CONF\" > /opt/opentelemetry-webserver/source-conf/opentemetry_agent.conf && sed -i 's/<<SID-PLACEHOLDER>>/'${APACHE_SERVICE_INSTANCE_ID}'/g' /opt/opentelemetry-webserver/source-conf/opentemetry_agent.conf && echo -e '\nInclude /usr/local/apache2/conf/opentemetry_agent.conf' >> /opt/opentelemetry-webserver/source-conf/httpd.conf"},
							Env: []corev1.EnvVar{
								{
									Name:  apacheAttributesEnvVar,
									Value: "\n#Load the Otel Webserver SDK\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_common.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_resources.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_trace.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_otlp_recordable.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_exporter_ostream_span.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_exporter_otlp_grpc.so\n#Load the Otel ApacheModule SDK\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_webserver_sdk.so\n#Load the Apache Module. In this example for Apache 2.4\n#LoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel.so\n#Load the Apache Module. In this example for Apache 2.2\n#LoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel22.so\nLoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel.so\n#Attributes\nApacheModuleEnabled ON\nApacheModuleOtelExporterEndpoint http://otlp-endpoint:4317\nApacheModuleOtelSpanExporter otlp\nApacheModuleResolveBackends  ON\nApacheModuleServiceInstanceId <<SID-PLACEHOLDER>>\nApacheModuleServiceName apache-httpd-service-name\nApacheModuleServiceNamespace req-namespace\nApacheModuleTraceAsError  ON\n",
								},
								{Name: apacheServiceInstanceIdEnvVar,
									ValueFrom: &corev1.EnvVarSource{
										FieldRef: &corev1.ObjectFieldSelector{
											FieldPath: "metadata.name",
										},
									},
								},
							},
							VolumeMounts: []corev1.VolumeMount{
								{
									Name:      apacheAgentVolume,
									MountPath: apacheAgentDirectory + apacheAgentSubDirectory,
								},
								{
									Name:      apacheAgentConfigVolume,
									MountPath: apacheAgentConfDirFull,
								},
							},
						},
					},
					Containers: []corev1.Container{
						{
							VolumeMounts: []corev1.VolumeMount{
								{
									Name:      apacheAgentVolume,
									MountPath: apacheAgentDirectory + apacheAgentSubDirectory,
								},
								{
									Name:      apacheAgentConfigVolume,
									MountPath: apacheDefaultConfigDirectory,
								},
							},
							ReadinessProbe: &corev1.Probe{},
							StartupProbe:   &corev1.Probe{},
							LivenessProbe:  &corev1.Probe{},
							Lifecycle:      &corev1.Lifecycle{},
						},
					},
				},
			},
		},
		// Pod Namespace specified
		{
			name:        "Pod Namespace specified",
			ApacheHttpd: v1alpha1.ApacheHttpd{Image: "foo/bar:1"},
			pod: corev1.Pod{
				ObjectMeta: v1.ObjectMeta{
					Namespace: "my-namespace",
				},
				Spec: corev1.PodSpec{
					Containers: []corev1.Container{
						{},
					},
				},
			},
			expected: corev1.Pod{
				ObjectMeta: v1.ObjectMeta{
					Namespace: "my-namespace",
				},
				Spec: corev1.PodSpec{
					Volumes: []corev1.Volume{
						{
							Name: apacheAgentConfigVolume,
							VolumeSource: corev1.VolumeSource{
								EmptyDir: &corev1.EmptyDirVolumeSource{
									SizeLimit: &defaultVolumeLimitSize,
								},
							},
						},
						{
							Name: apacheAgentVolume,
							VolumeSource: corev1.VolumeSource{
								EmptyDir: &corev1.EmptyDirVolumeSource{
									SizeLimit: &defaultVolumeLimitSize,
								},
							},
						},
					},
					InitContainers: []corev1.Container{
						{
							Name:    apacheAgentCloneContainerName,
							Image:   "",
							Command: []string{"/bin/sh", "-c"},
							Args:    []string{"cp -r /usr/local/apache2/conf/* " + apacheAgentDirectory + apacheAgentConfigDirectory},
							VolumeMounts: []corev1.VolumeMount{{
								Name:      apacheAgentConfigVolume,
								MountPath: apacheAgentDirectory + apacheAgentConfigDirectory,
							}},
						},
						{
							Name:    apacheAgentInitContainerName,
							Image:   "foo/bar:1",
							Command: []string{"/bin/sh", "-c"},
							Args: []string{
								"cp -r /opt/opentelemetry/* /opt/opentelemetry-webserver/agent && export agentLogDir=$(echo \"/opt/opentelemetry-webserver/agent/logs\" | sed 's,/,\\\\/,g') && cat /opt/opentelemetry-webserver/agent/conf/opentelemetry_sdk_log4cxx.xml.template | sed 's/__agent_log_dir__/'${agentLogDir}'/g'  > /opt/opentelemetry-webserver/agent/conf/opentelemetry_sdk_log4cxx.xml &&echo \"$OTEL_APACHE_AGENT_CONF\" > /opt/opentelemetry-webserver/source-conf/opentemetry_agent.conf && sed -i 's/<<SID-PLACEHOLDER>>/'${APACHE_SERVICE_INSTANCE_ID}'/g' /opt/opentelemetry-webserver/source-conf/opentemetry_agent.conf && echo -e '\nInclude /usr/local/apache2/conf/opentemetry_agent.conf' >> /opt/opentelemetry-webserver/source-conf/httpd.conf"},
							Env: []corev1.EnvVar{
								{
									Name:  apacheAttributesEnvVar,
									Value: "\n#Load the Otel Webserver SDK\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_common.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_resources.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_trace.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_otlp_recordable.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_exporter_ostream_span.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_exporter_otlp_grpc.so\n#Load the Otel ApacheModule SDK\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_webserver_sdk.so\n#Load the Apache Module. In this example for Apache 2.4\n#LoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel.so\n#Load the Apache Module. In this example for Apache 2.2\n#LoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel22.so\nLoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel.so\n#Attributes\nApacheModuleEnabled ON\nApacheModuleOtelExporterEndpoint http://otlp-endpoint:4317\nApacheModuleOtelSpanExporter otlp\nApacheModuleResolveBackends  ON\nApacheModuleServiceInstanceId <<SID-PLACEHOLDER>>\nApacheModuleServiceName apache-httpd-service-name\nApacheModuleServiceNamespace my-namespace\nApacheModuleTraceAsError  ON\n",
								},
								{Name: apacheServiceInstanceIdEnvVar,
									ValueFrom: &corev1.EnvVarSource{
										FieldRef: &corev1.ObjectFieldSelector{
											FieldPath: "metadata.name",
										},
									},
								},
							},
							VolumeMounts: []corev1.VolumeMount{
								{
									Name:      apacheAgentVolume,
									MountPath: apacheAgentDirectory + apacheAgentSubDirectory,
								},
								{
									Name:      apacheAgentConfigVolume,
									MountPath: apacheAgentConfDirFull,
								},
							},
						},
					},
					Containers: []corev1.Container{
						{
							VolumeMounts: []corev1.VolumeMount{
								{
									Name:      apacheAgentVolume,
									MountPath: apacheAgentDirectory + apacheAgentSubDirectory,
								},
								{
									Name:      apacheAgentConfigVolume,
									MountPath: apacheDefaultConfigDirectory,
								},
							},
						},
					},
				},
			},
		},
	}

	resourceMap := map[string]string{
		string(semconv.K8SDeploymentNameKey): "apache-httpd-service-name",
		string(semconv.K8SNamespaceNameKey):  "req-namespace",
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			pod := injectApacheHttpdagent(logr.Discard(), test.ApacheHttpd, test.pod, false, 0, "http://otlp-endpoint:4317", resourceMap)
			assert.Equal(t, test.expected, pod)
		})
	}
}

func TestInjectApacheHttpdagentUnknownNamespace(t *testing.T) {
	tests := []struct {
		name string
		v1alpha1.ApacheHttpd
		pod      corev1.Pod
		expected corev1.Pod
	}{
		{
			name:        "Clone Container not present, unknown namespace",
			ApacheHttpd: v1alpha1.ApacheHttpd{Image: "foo/bar:1"},
			pod: corev1.Pod{
				Spec: corev1.PodSpec{
					Containers: []corev1.Container{
						{},
					},
				},
			},
			expected: corev1.Pod{
				Spec: corev1.PodSpec{
					Volumes: []corev1.Volume{
						{
							Name: apacheAgentConfigVolume,
							VolumeSource: corev1.VolumeSource{
								EmptyDir: &corev1.EmptyDirVolumeSource{
									SizeLimit: &defaultVolumeLimitSize,
								},
							},
						},
						{
							Name: apacheAgentVolume,
							VolumeSource: corev1.VolumeSource{
								EmptyDir: &corev1.EmptyDirVolumeSource{
									SizeLimit: &defaultVolumeLimitSize,
								},
							},
						},
					},
					InitContainers: []corev1.Container{
						{
							Name:    apacheAgentCloneContainerName,
							Image:   "",
							Command: []string{"/bin/sh", "-c"},
							Args:    []string{"cp -r /usr/local/apache2/conf/* " + apacheAgentDirectory + apacheAgentConfigDirectory},
							VolumeMounts: []corev1.VolumeMount{{
								Name:      apacheAgentConfigVolume,
								MountPath: apacheAgentDirectory + apacheAgentConfigDirectory,
							}},
						},
						{
							Name:    apacheAgentInitContainerName,
							Image:   "foo/bar:1",
							Command: []string{"/bin/sh", "-c"},
							Args: []string{
								"cp -r /opt/opentelemetry/* /opt/opentelemetry-webserver/agent && export agentLogDir=$(echo \"/opt/opentelemetry-webserver/agent/logs\" | sed 's,/,\\\\/,g') && cat /opt/opentelemetry-webserver/agent/conf/opentelemetry_sdk_log4cxx.xml.template | sed 's/__agent_log_dir__/'${agentLogDir}'/g'  > /opt/opentelemetry-webserver/agent/conf/opentelemetry_sdk_log4cxx.xml &&echo \"$OTEL_APACHE_AGENT_CONF\" > /opt/opentelemetry-webserver/source-conf/opentemetry_agent.conf && sed -i 's/<<SID-PLACEHOLDER>>/'${APACHE_SERVICE_INSTANCE_ID}'/g' /opt/opentelemetry-webserver/source-conf/opentemetry_agent.conf && echo -e '\nInclude /usr/local/apache2/conf/opentemetry_agent.conf' >> /opt/opentelemetry-webserver/source-conf/httpd.conf"},
							Env: []corev1.EnvVar{
								{
									Name:  apacheAttributesEnvVar,
									Value: "\n#Load the Otel Webserver SDK\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_common.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_resources.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_trace.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_otlp_recordable.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_exporter_ostream_span.so\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_exporter_otlp_grpc.so\n#Load the Otel ApacheModule SDK\nLoadFile /opt/opentelemetry-webserver/agent/sdk_lib/lib/libopentelemetry_webserver_sdk.so\n#Load the Apache Module. In this example for Apache 2.4\n#LoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel.so\n#Load the Apache Module. In this example for Apache 2.2\n#LoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel22.so\nLoadModule otel_apache_module /opt/opentelemetry-webserver/agent/WebServerModule/Apache/libmod_apache_otel.so\n#Attributes\nApacheModuleEnabled ON\nApacheModuleOtelExporterEndpoint http://otlp-endpoint:4317\nApacheModuleOtelSpanExporter otlp\nApacheModuleResolveBackends  ON\nApacheModuleServiceInstanceId <<SID-PLACEHOLDER>>\nApacheModuleServiceName apache-httpd-service-name\nApacheModuleServiceNamespace apache-httpd\nApacheModuleTraceAsError  ON\n",
								},
								{Name: apacheServiceInstanceIdEnvVar,
									ValueFrom: &corev1.EnvVarSource{
										FieldRef: &corev1.ObjectFieldSelector{
											FieldPath: "metadata.name",
										},
									},
								},
							},
							VolumeMounts: []corev1.VolumeMount{
								{
									Name:      apacheAgentVolume,
									MountPath: apacheAgentDirectory + apacheAgentSubDirectory,
								},
								{
									Name:      apacheAgentConfigVolume,
									MountPath: apacheAgentConfDirFull,
								},
							},
						},
					},
					Containers: []corev1.Container{
						{
							VolumeMounts: []corev1.VolumeMount{
								{
									Name:      apacheAgentVolume,
									MountPath: apacheAgentDirectory + apacheAgentSubDirectory,
								},
								{
									Name:      apacheAgentConfigVolume,
									MountPath: apacheDefaultConfigDirectory,
								},
							},
						},
					},
				},
			},
		},
	}

	resourceMap := map[string]string{
		string(semconv.K8SDeploymentNameKey): "apache-httpd-service-name",
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			pod := injectApacheHttpdagent(logr.Discard(), test.ApacheHttpd, test.pod, false, 0, "http://otlp-endpoint:4317", resourceMap)
			assert.Equal(t, test.expected, pod)
		})
	}
}

func TestApacheInitContainerMissing(t *testing.T) {
	tests := []struct {
		name     string
		pod      corev1.Pod
		expected bool
	}{
		{
			name: "InitContainer_Already_Inject",
			pod: corev1.Pod{
				Spec: corev1.PodSpec{
					InitContainers: []corev1.Container{
						{
							Name: "istio-init",
						},
						{
							Name: apacheAgentInitContainerName,
						},
					},
				},
			},
			expected: false,
		},
		{
			name: "InitContainer_Absent_1",
			pod: corev1.Pod{
				Spec: corev1.PodSpec{
					InitContainers: []corev1.Container{
						{
							Name: "istio-init",
						},
					},
				},
			},
			expected: true,
		},
		{
			name: "InitContainer_Absent_2",
			pod: corev1.Pod{
				Spec: corev1.PodSpec{},
			},
			expected: true,
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			result := isApacheInitContainerMissing(test.pod, apacheAgentInitContainerName)
			assert.Equal(t, test.expected, result)
		})
	}
}