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env_vars.go
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env_vars.go
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package daemonset
import (
"github.com/Dynatrace/dynatrace-operator/pkg/api/status"
dynatracev1beta1 "github.com/Dynatrace/dynatrace-operator/pkg/api/v1beta1/dynakube"
"github.com/Dynatrace/dynatrace-operator/pkg/controllers/dynakube/connectioninfo"
"github.com/Dynatrace/dynatrace-operator/pkg/controllers/dynakube/deploymentmetadata"
"github.com/Dynatrace/dynatrace-operator/pkg/util/kubeobjects/address"
"github.com/Dynatrace/dynatrace-operator/pkg/util/prioritymap"
"github.com/Dynatrace/dynatrace-operator/pkg/version"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
)
const (
dtNodeName = "DT_K8S_NODE_NAME"
dtClusterId = "DT_K8S_CLUSTER_ID"
oneagentDisableContainerInjection = "ONEAGENT_DISABLE_CONTAINER_INJECTION"
oneagentReadOnlyMode = "ONEAGENT_READ_ONLY_MODE"
proxyEnv = "https_proxy"
// ProxyAsEnvVarDeprecatedVersion holds the version after which OneAgent allows mounting proxy as file, therefore
// enabling us to deprecate the env var/arg approach (which is non security compliant)
ProxyAsEnvVarDeprecatedVersion = "1.273.0.0-0"
)
const customEnvPriority = prioritymap.HighPriority
const defaultEnvPriority = prioritymap.DefaultPriority
func (dsInfo *builderInfo) environmentVariables() ([]corev1.EnvVar, error) {
envMap := prioritymap.New(prioritymap.WithPriority(defaultEnvPriority))
if dsInfo.hostInjectSpec != nil {
prioritymap.Append(envMap, dsInfo.hostInjectSpec.Env, prioritymap.WithPriority(customEnvPriority))
}
addNodeNameEnv(envMap)
dsInfo.addClusterIDEnv(envMap)
dsInfo.addDeploymentMetadataEnv(envMap)
dsInfo.addOperatorVersionInfoEnv(envMap)
dsInfo.addConnectionInfoEnvs(envMap)
dsInfo.addReadOnlyEnv(envMap)
isProxyAsEnvDeprecated, err := isProxyAsEnvVarDeprecated(dsInfo.dynakube.OneAgentVersion())
if err != nil {
return []corev1.EnvVar{}, err
}
if !isProxyAsEnvDeprecated {
// deprecated
dsInfo.addProxyEnv(envMap)
}
return envMap.AsEnvVars(), nil
}
func addNodeNameEnv(envVarMap *prioritymap.Map) {
addDefaultValueSource(envVarMap, dtNodeName, &corev1.EnvVarSource{FieldRef: &corev1.ObjectFieldSelector{FieldPath: "spec.nodeName"}})
}
func (dsInfo *builderInfo) addClusterIDEnv(envVarMap *prioritymap.Map) {
addDefaultValue(envVarMap, dtClusterId, dsInfo.clusterID)
}
func (dsInfo *builderInfo) addDeploymentMetadataEnv(envVarMap *prioritymap.Map) {
addDefaultValueSource(envVarMap, deploymentmetadata.EnvDtDeploymentMetadata, &corev1.EnvVarSource{ConfigMapKeyRef: &corev1.ConfigMapKeySelector{
LocalObjectReference: corev1.LocalObjectReference{
Name: deploymentmetadata.GetDeploymentMetadataConfigMapName(dsInfo.dynakube.Name),
},
Key: deploymentmetadata.OneAgentMetadataKey,
Optional: address.Of(false),
}})
}
func (dsInfo *builderInfo) addOperatorVersionInfoEnv(envVarMap *prioritymap.Map) {
addDefaultValueSource(envVarMap, deploymentmetadata.EnvDtOperatorVersion, &corev1.EnvVarSource{ConfigMapKeyRef: &corev1.ConfigMapKeySelector{
LocalObjectReference: corev1.LocalObjectReference{
Name: deploymentmetadata.GetDeploymentMetadataConfigMapName(dsInfo.dynakube.Name),
},
Key: deploymentmetadata.OperatorVersionKey,
Optional: address.Of(false),
}})
}
func (dsInfo *builderInfo) addConnectionInfoEnvs(envVarMap *prioritymap.Map) {
addDefaultValueSource(envVarMap, connectioninfo.EnvDtTenant, &corev1.EnvVarSource{ConfigMapKeyRef: &corev1.ConfigMapKeySelector{
LocalObjectReference: corev1.LocalObjectReference{
Name: dsInfo.dynakube.OneAgentConnectionInfoConfigMapName(),
},
Key: connectioninfo.TenantUUIDKey,
Optional: address.Of(false),
}})
addDefaultValueSource(envVarMap, connectioninfo.EnvDtServer, &corev1.EnvVarSource{ConfigMapKeyRef: &corev1.ConfigMapKeySelector{
LocalObjectReference: corev1.LocalObjectReference{
Name: dsInfo.dynakube.OneAgentConnectionInfoConfigMapName(),
},
Key: connectioninfo.CommunicationEndpointsKey,
Optional: address.Of(false),
}})
}
// deprecated
func (dsInfo *builderInfo) addProxyEnv(envVarMap *prioritymap.Map) {
if !dsInfo.hasProxy() {
return
}
if dsInfo.dynakube.Spec.Proxy.ValueFrom != "" {
addDefaultValueSource(envVarMap, proxyEnv, &corev1.EnvVarSource{
SecretKeyRef: &corev1.SecretKeySelector{
LocalObjectReference: corev1.LocalObjectReference{Name: dsInfo.dynakube.Spec.Proxy.ValueFrom},
Key: dynatracev1beta1.ProxyKey,
},
})
} else {
addDefaultValue(envVarMap, proxyEnv, dsInfo.dynakube.Spec.Proxy.Value)
}
}
func (dsInfo *builderInfo) addReadOnlyEnv(envVarMap *prioritymap.Map) {
if dsInfo.dynakube != nil && dsInfo.dynakube.NeedsReadOnlyOneAgents() {
addDefaultValue(envVarMap, oneagentReadOnlyMode, "true")
}
}
func (dsInfo *HostMonitoring) appendInfraMonEnvVars(daemonset *appsv1.DaemonSet) {
envVars := prioritymap.New()
prioritymap.Append(envVars, daemonset.Spec.Template.Spec.Containers[0].Env)
addDefaultValue(envVars, oneagentDisableContainerInjection, "true")
daemonset.Spec.Template.Spec.Containers[0].Env = envVars.AsEnvVars()
}
func addDefaultValue(envVarMap *prioritymap.Map, name string, value string) {
prioritymap.Append(envVarMap, corev1.EnvVar{
Name: name,
Value: value,
})
}
func addDefaultValueSource(envVarMap *prioritymap.Map, name string, value *corev1.EnvVarSource) {
prioritymap.Append(envVarMap, corev1.EnvVar{
Name: name,
ValueFrom: value,
})
}
func isProxyAsEnvVarDeprecated(oneAgentVersion string) (bool, error) {
if oneAgentVersion == "" || oneAgentVersion == string(status.CustomImageVersionSource) {
// If the version is unknown or from a custom image, then we don't care about deprecation.
return true, nil
}
runningVersion, err := version.ExtractSemanticVersion(oneAgentVersion)
if err != nil {
return false, err
}
versionConstraint, err := version.ExtractSemanticVersion(ProxyAsEnvVarDeprecatedVersion)
if err != nil {
return false, err
}
result := version.CompareSemanticVersions(runningVersion, versionConstraint)
// if a current OneAgent version is older than fix version
if result < 0 {
return false, nil
}
return true, nil
}