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kafkacluster_types.go
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kafkacluster_types.go
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// Copyright © 2019 Cisco Systems, Inc. and/or its affiliates
//
// 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 v1beta1
import (
"fmt"
"strings"
"emperror.dev/errors"
"github.com/imdario/mergo"
"github.com/banzaicloud/istio-client-go/pkg/networking/v1beta1"
cmmeta "github.com/cert-manager/cert-manager/pkg/apis/meta/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"github.com/banzaicloud/koperator/api/assets"
"github.com/banzaicloud/koperator/api/util"
)
// EDIT THIS FILE! THIS IS SCAFFOLDING FOR YOU TO OWN!
// NOTE: json tags are required. Any new fields you add must have json tags for the fields to be serialized.
const (
// DefaultServiceAccountName name used for the various ServiceAccounts
DefaultServiceAccountName = "default"
// DefaultAnyCastPort kafka anycast port that can be used by clients for metadata queries
DefaultAnyCastPort = 29092
// DefaultEnvoyHealthCheckPort envoy health check port
DefaultEnvoyHealthCheckPort = 8080
// DefaultEnvoyAdminPort envoy admin port
DefaultEnvoyAdminPort = 8081
// DefaultBrokerTerminationGracePeriod default kafka pod termination grace period
DefaultBrokerTerminationGracePeriod = 120
// AppLabelKey is used to represent the reserved operator label, "app"
AppLabelKey = "app"
// KafkaCRLabelKey is used to represent the reserved operator label, "kafka_cr"
KafkaCRLabelKey = "kafka_cr"
// BrokerIdLabelKey is used to represent the reserved operator label, "brokerId"
BrokerIdLabelKey = "brokerId"
)
// KafkaClusterSpec defines the desired state of KafkaCluster
type KafkaClusterSpec struct {
HeadlessServiceEnabled bool `json:"headlessServiceEnabled"`
ListenersConfig ListenersConfig `json:"listenersConfig"`
// Custom ports to expose in the container. Example use case: a custom kafka distribution, that includes an integrated metrics api endpoint
AdditionalPorts []corev1.ContainerPort `json:"additionalPorts,omitempty"`
// ZKAddresses specifies the ZooKeeper connection string
// in the form hostname:port where host and port are the host and port of a ZooKeeper server.
ZKAddresses []string `json:"zkAddresses"`
// ZKPath specifies the ZooKeeper chroot path as part
// of its ZooKeeper connection string which puts its data under some path in the global ZooKeeper namespace.
ZKPath string `json:"zkPath,omitempty"`
RackAwareness *RackAwareness `json:"rackAwareness,omitempty"`
ClusterImage string `json:"clusterImage,omitempty"`
ClusterMetricsReporterImage string `json:"clusterMetricsReporterImage,omitempty"`
ReadOnlyConfig string `json:"readOnlyConfig,omitempty"`
ClusterWideConfig string `json:"clusterWideConfig,omitempty"`
BrokerConfigGroups map[string]BrokerConfig `json:"brokerConfigGroups,omitempty"`
Brokers []Broker `json:"brokers"`
DisruptionBudget DisruptionBudget `json:"disruptionBudget,omitempty"`
RollingUpgradeConfig RollingUpgradeConfig `json:"rollingUpgradeConfig"`
// +kubebuilder:validation:Enum=envoy;istioingress
// IngressController specifies the type of the ingress controller to be used for external listeners. The `istioingress` ingress controller type requires the `spec.istioControlPlane` field to be populated as well.
IngressController string `json:"ingressController,omitempty"`
// IstioControlPlane is a reference to the IstioControlPlane resource for envoy configuration. It must be specified if istio ingress is used.
IstioControlPlane *IstioControlPlaneReference `json:"istioControlPlane,omitempty"`
// If true OneBrokerPerNode ensures that each kafka broker will be placed on a different node unless a custom
// Affinity definition overrides this behavior
OneBrokerPerNode bool `json:"oneBrokerPerNode"`
// RemoveUnusedIngressResources when true, the unnecessary resources from the previous ingress state will be removed.
// when false, they will be kept so the Kafka cluster remains available for those Kafka clients which are still using the previous ingress setting.
// +kubebuilder:default=false
// +optional
RemoveUnusedIngressResources bool `json:"removeUnusedIngressResources,omitempty"`
PropagateLabels bool `json:"propagateLabels,omitempty"`
CruiseControlConfig CruiseControlConfig `json:"cruiseControlConfig"`
EnvoyConfig EnvoyConfig `json:"envoyConfig,omitempty"`
MonitoringConfig MonitoringConfig `json:"monitoringConfig,omitempty"`
AlertManagerConfig *AlertManagerConfig `json:"alertManagerConfig,omitempty"`
IstioIngressConfig IstioIngressConfig `json:"istioIngressConfig,omitempty"`
// Envs defines environment variables for Kafka broker Pods.
// Adding the "+" prefix to the name prepends the value to that environment variable instead of overwriting it.
// Add the "+" suffix to append.
Envs []corev1.EnvVar `json:"envs,omitempty"`
KubernetesClusterDomain string `json:"kubernetesClusterDomain,omitempty"`
// ClientSSLCertSecret is a reference to the Kubernetes secret where custom client SSL certificate can be provided.
// It will be used by the koperator, cruise control, cruise control metrics reporter
// to communicate on SSL with that internal listener which is used for interbroker communication.
// The client certificate must share the same chain of trust as the server certificate used by the corresponding internal listener.
// The secret must contain the keystore, truststore jks files and the password for them in base64 encoded format
// under the keystore.jks, truststore.jks, password data fields.
ClientSSLCertSecret *corev1.LocalObjectReference `json:"clientSSLCertSecret,omitempty"`
}
// KafkaClusterStatus defines the observed state of KafkaCluster
type KafkaClusterStatus struct {
BrokersState map[string]BrokerState `json:"brokersState,omitempty"`
CruiseControlTopicStatus CruiseControlTopicStatus `json:"cruiseControlTopicStatus,omitempty"`
State ClusterState `json:"state"`
RollingUpgrade RollingUpgradeStatus `json:"rollingUpgradeStatus,omitempty"`
AlertCount int `json:"alertCount"`
ListenerStatuses ListenerStatuses `json:"listenerStatuses,omitempty"`
}
// RollingUpgradeStatus defines status of rolling upgrade
type RollingUpgradeStatus struct {
LastSuccess string `json:"lastSuccess"`
// ErrorCount keeps track the number of errors reported by alerts labeled with 'rollingupgrade'.
// It's reset once these alerts stop firing.
ErrorCount int `json:"errorCount"`
}
// RollingUpgradeConfig defines the desired config of the RollingUpgrade
type RollingUpgradeConfig struct {
// FailureThreshold controls how many failures the cluster can tolerate during a rolling upgrade. Once the number of
// failures reaches this threshold a rolling upgrade flow stops. The number of failures is computed as the sum of
// distinct broker replicas with either offline replicas or out of sync replicas and the number of alerts triggered by
// alerts with 'rollingupgrade'
FailureThreshold int `json:"failureThreshold"`
}
// DisruptionBudget defines the configuration for PodDisruptionBudget where the workload is managed by the kafka-operator
type DisruptionBudget struct {
// If set to true, will create a podDisruptionBudget
// +optional
Create bool `json:"create,omitempty"`
// The budget to set for the PDB, can either be static number or a percentage
// +kubebuilder:validation:Pattern:="^[0-9]+$|^[0-9]{1,2}%$|^100%$"
Budget string `json:"budget,omitempty"`
}
// DisruptionBudgetWithStrategy defines the configuration for PodDisruptionBudget where the workload is managed by an external controller (eg. Deployments)
type DisruptionBudgetWithStrategy struct {
// PodDisruptionBudget default settings
DisruptionBudget `json:",inline"`
// The strategy to be used, either minAvailable or maxUnavailable
// +kubebuilder:validation:Enum=minAvailable;maxUnavailable
Stategy string `json:"strategy,omitempty"`
}
// Broker defines the broker basic configuration
type Broker struct {
// +kubebuilder:validation:Minimum=0
// +kubebuilder:validation:Maximum=65535
// +kubebuilder:validation:ExclusiveMaximum=true
Id int32 `json:"id"`
BrokerConfigGroup string `json:"brokerConfigGroup,omitempty"`
ReadOnlyConfig string `json:"readOnlyConfig,omitempty"`
BrokerConfig *BrokerConfig `json:"brokerConfig,omitempty"`
}
// BrokerConfig defines the broker configuration
type BrokerConfig struct {
Image string `json:"image,omitempty"`
MetricsReporterImage string `json:"metricsReporterImage,omitempty"`
Config string `json:"config,omitempty"`
StorageConfigs []StorageConfig `json:"storageConfigs,omitempty"`
ServiceAccountName string `json:"serviceAccountName,omitempty"`
Resources *corev1.ResourceRequirements `json:"resourceRequirements,omitempty"`
ImagePullSecrets []corev1.LocalObjectReference `json:"imagePullSecrets,omitempty"`
NodeSelector map[string]string `json:"nodeSelector,omitempty"`
Tolerations []corev1.Toleration `json:"tolerations,omitempty"`
KafkaHeapOpts string `json:"kafkaHeapOpts,omitempty"`
KafkaJVMPerfOpts string `json:"kafkaJvmPerfOpts,omitempty"`
// Override for the default log4j configuration
Log4jConfig string `json:"log4jConfig,omitempty"`
// Custom annotations for the broker pods - e.g.: Prometheus scraping annotations:
// prometheus.io/scrape: "true"
// prometheus.io/port: "9020"
BrokerAnnotations map[string]string `json:"brokerAnnotations,omitempty"`
// Custom labels for the broker pods, example use case: for Prometheus monitoring to capture the group for each broker as a label, e.g.:
// kafka_broker_group: "default_group"
// these labels will not override the reserved labels that the operator relies on, for example, "app", "brokerId", and "kafka_cr"
// +optional
BrokerLabels map[string]string `json:"brokerLabels,omitempty"`
// Network throughput information in kB/s used by Cruise Control to determine broker network capacity.
// By default it is set to `125000` which means 1Gbit/s in network throughput.
NetworkConfig *NetworkConfig `json:"networkConfig,omitempty"`
// External listeners that use NodePort type service to expose the broker outside the Kubernetes clusterT and their
// external IP to advertise Kafka broker external listener. The external IP value is ignored in case of external listeners that use LoadBalancer
// type service to expose the broker outside the Kubernetes cluster. Also, when "hostnameOverride" field of the external listener is set
// it will override the broker's external listener advertise address according to the description of the "hostnameOverride" field.
NodePortExternalIP map[string]string `json:"nodePortExternalIP,omitempty"`
// When "hostNameOverride" and brokerConfig.nodePortExternalIP are empty and NodePort access method is selected for an external listener
// the NodePortNodeAdddressType defines the Kafka broker's Kubernetes node's address type that shall be used in the advertised.listeners property.
// https://kubernetes.io/docs/concepts/architecture/nodes/#addresses
// The NodePortNodeAddressType's possible values can be Hostname, ExternalIP, InternalIP, InternalDNS,ExternalDNS
// +kubebuilder:validation:Enum=Hostname;ExternalIP;InternalIP;InternalDNS;ExternalDNS
// +optional
NodePortNodeAddressType corev1.NodeAddressType `json:"nodePortNodeAddressType,omitempty"`
// Any definition received through this field will override the default behaviour of OneBrokerPerNode flag
// and the operator supposes that the user is aware of how scheduling is done by kubernetes
// Affinity could be set through brokerConfigGroups definitions and can be set for individual brokers as well
// where letter setting will override the group setting
Affinity *corev1.Affinity `json:"affinity,omitempty"`
PodSecurityContext *corev1.PodSecurityContext `json:"podSecurityContext,omitempty"`
// SecurityContext allows to set security context for the kafka container
SecurityContext *corev1.SecurityContext `json:"securityContext,omitempty"`
// BrokerIngressMapping allows to set specific ingress to a specific broker mappings.
// If left empty, all broker will inherit the default one specified under external listeners config
// Only used when ExternalListeners.Config is populated
BrokerIngressMapping []string `json:"brokerIngressMapping,omitempty"`
// InitContainers add extra initContainers to the Kafka broker pod
InitContainers []corev1.Container `json:"initContainers,omitempty"`
// Containers add extra Containers to the Kafka broker pod
Containers []corev1.Container `json:"containers,omitempty"`
// Volumes define some extra Kubernetes Volumes for the Kafka broker Pods.
Volumes []corev1.Volume `json:"volumes,omitempty"`
// VolumeMounts define some extra Kubernetes VolumeMounts for the Kafka broker Pods.
VolumeMounts []corev1.VolumeMount `json:"volumeMounts,omitempty"`
// Envs defines environment variables for Kafka broker Pods.
// Adding the "+" prefix to the name prepends the value to that environment variable instead of overwriting it.
// Add the "+" suffix to append.
Envs []corev1.EnvVar `json:"envs,omitempty"`
// TerminationGracePeriod defines the pod termination grace period
// +kubebuilder:default=120
// +optional
TerminationGracePeriod *int64 `json:"terminationGracePeriodSeconds,omitempty"`
// PriorityClassName specifies the priority class name for a broker pod(s).
// If specified, the PriorityClass resource with this PriorityClassName must be created beforehand.
// If not specified, the broker pods' priority is default to zero.
// +optional
PriorityClassName string `json:"priorityClassName,omitempty"`
}
type NetworkConfig struct {
IncomingNetworkThroughPut string `json:"incomingNetworkThroughPut,omitempty"`
OutgoingNetworkThroughPut string `json:"outgoingNetworkThroughPut,omitempty"`
}
// RackAwareness defines the required fields to enable kafka's rack aware feature
type RackAwareness struct {
Labels []string `json:"labels"`
}
// CruiseControlConfig defines the config for Cruise Control
type CruiseControlConfig struct {
CruiseControlTaskSpec CruiseControlTaskSpec `json:"cruiseControlTaskSpec,omitempty"`
CruiseControlOperationSpec *CruiseControlOperationSpec `json:"cruiseControlOperationSpec,omitempty"`
CruiseControlEndpoint string `json:"cruiseControlEndpoint,omitempty"`
Resources *corev1.ResourceRequirements `json:"resourceRequirements,omitempty"`
ServiceAccountName string `json:"serviceAccountName,omitempty"`
ImagePullSecrets []corev1.LocalObjectReference `json:"imagePullSecrets,omitempty"`
NodeSelector map[string]string `json:"nodeSelector,omitempty"`
Tolerations []corev1.Toleration `json:"tolerations,omitempty"`
Config string `json:"config,omitempty"`
CapacityConfig string `json:"capacityConfig,omitempty"`
ClusterConfig string `json:"clusterConfig,omitempty"`
Log4jConfig string `json:"log4jConfig,omitempty"`
Image string `json:"image,omitempty"`
TopicConfig *TopicConfig `json:"topicConfig,omitempty"`
Affinity *corev1.Affinity `json:"affinity,omitempty"`
// Annotations to be applied to CruiseControl pod
// +optional
CruiseControlAnnotations map[string]string `json:"cruiseControlAnnotations,omitempty"`
// InitContainers add extra initContainers to CruiseControl pod
InitContainers []corev1.Container `json:"initContainers,omitempty"`
// Volumes define some extra Kubernetes Volumes for the CruiseControl Pods.
Volumes []corev1.Volume `json:"volumes,omitempty"`
// VolumeMounts define some extra Kubernetes Volume mounts for the CruiseControl Pods.
VolumeMounts []corev1.VolumeMount `json:"volumeMounts,omitempty"`
PodSecurityContext *corev1.PodSecurityContext `json:"podSecurityContext,omitempty"`
// SecurityContext allows to set security context for the CruiseControl container
SecurityContext *corev1.SecurityContext `json:"securityContext,omitempty"`
// PriorityClassName specifies the priority class name for the CruiseControl pod.
// If specified, the PriorityClass resource with this PriorityClassName must be created beforehand.
// If not specified, the CruiseControl pod's priority is default to zero.
// +optional
PriorityClassName string `json:"priorityClassName,omitempty"`
}
// CruiseControlOperationSpec specifies the configuration of the CruiseControlOperation handling
type CruiseControlOperationSpec struct {
// When TTLSecondsAfterFinished is specified, the created and finished (completed successfully or completedWithError and errorPolicy: ignore)
// cruiseControlOperation custom resource will be deleted after the given time elapsed.
// When it is 0 then the resource is going to be deleted instantly after the operation is finished.
// When it is not specified the resource is not going to be removed.
// Value can be only zero and positive integers.
// +kubebuilder:validation:Minimum=0
TTLSecondsAfterFinished *int `json:"ttlSecondsAfterFinished,omitempty"`
}
// GetTTLSecondsAfterFinished returns NIL when CruiseControlOperationSpec is not specified otherwise it returns itself
func (c *CruiseControlOperationSpec) GetTTLSecondsAfterFinished() *int {
if c == nil {
return nil
}
return c.TTLSecondsAfterFinished
}
// CruiseControlTaskSpec specifies the configuration of the CC Tasks
type CruiseControlTaskSpec struct {
// RetryDurationMinutes describes the amount of time the Operator waits for the task
RetryDurationMinutes int `json:"RetryDurationMinutes"`
}
// TopicConfig holds info for topic configuration regarding partitions and replicationFactor
type TopicConfig struct {
Partitions int32 `json:"partitions"`
// +kubebuilder:validation:Minimum=2
ReplicationFactor int32 `json:"replicationFactor"`
}
// EnvoyConfig defines the config for Envoy
type EnvoyConfig struct {
Image string `json:"image,omitempty"`
Resources *corev1.ResourceRequirements `json:"resourceRequirements,omitempty"`
// +kubebuilder:validation:Minimum=1
Replicas int32 `json:"replicas,omitempty"`
// ServiceAccountName is the name of service account
ServiceAccountName string `json:"serviceAccountName,omitempty"`
// ImagePullSecrets for the envoy image pull
ImagePullSecrets []corev1.LocalObjectReference `json:"imagePullSecrets,omitempty"`
Affinity *corev1.Affinity `json:"affinity,omitempty"`
TopologySpreadConstraints []corev1.TopologySpreadConstraint `json:"topologySpreadConstraints,omitempty"`
// NodeSelector is the node selector expression for envoy pods
NodeSelector map[string]string `json:"nodeSelector,omitempty"`
Tolerations []corev1.Toleration `json:"tolerations,omitempty"`
// Annotations defines the annotations placed on the envoy ingress controller deployment
Annotations map[string]string `json:"annotations,omitempty"`
// If specified and supported by the platform, traffic through the
// cloud-provider load-balancer will be restricted to the specified client
// IPs. This field will be ignored if the
// cloud-provider does not support the feature.
// More info: https://kubernetes.io/docs/tasks/access-application-cluster/configure-cloud-provider-firewall/
LoadBalancerSourceRanges []string `json:"loadBalancerSourceRanges,omitempty"`
// LoadBalancerIP can be used to specify an exact IP for the LoadBalancer service
LoadBalancerIP string `json:"loadBalancerIP,omitempty"`
// Envoy admin port
AdminPort *int32 `json:"adminPort,omitempty"`
// Envoy health-check port
HealthCheckPort *int32 `json:"healthCheckPort,omitempty"`
// DisruptionBudget is the pod disruption budget attached to Envoy Deployment(s)
DisruptionBudget *DisruptionBudgetWithStrategy `json:"disruptionBudget,omitempty"`
// Envoy command line arguments
// +optional
// +kubebuilder:pruning:PreserveUnknownFields
CommandLineArgs *EnvoyCommandLineArgs `json:"envoyCommandLineArgs,omitempty"`
// PriorityClassName specifies the priority class name for the Envoy pod(s)
// If specified, the PriorityClass resource with this PriorityClassName must be created beforehand
// If not specified, the Envoy pods' priority is default to zero
// +optional
PriorityClassName string `json:"priorityClassName,omitempty"`
// EnableHealthCheckHttp10 is a toggle for adding HTTP1.0 support to Envoy health-check, default false
// +optional
EnableHealthCheckHttp10 bool `json:"enableHealthCheckHttp10,omitempty"`
// PodSecurityContext holds pod-level security attributes and common container
// settings for the Envoy pods.
PodSecurityContext *corev1.PodSecurityContext `json:"podSecurityContext,omitempty"`
}
// EnvoyCommandLineArgs defines envoy command line arguments
type EnvoyCommandLineArgs struct {
// Envoy --concurrency command line argument.
// See https://www.envoyproxy.io/docs/envoy/latest/operations/cli#cmdoption-concurrency
// +optional
// +kubebuilder:validation:Minimum=1
Concurrency int32 `json:"concurrency,omitempty"`
}
// IstioIngressConfig defines the config for the Istio Ingress Controller
type IstioIngressConfig struct {
Resources *corev1.ResourceRequirements `json:"resourceRequirements,omitempty"`
// +kubebuilder:validation:Minimum=1
Replicas int32 `json:"replicas,omitempty"`
NodeSelector map[string]string `json:"nodeSelector,omitempty"`
Tolerations []*corev1.Toleration `json:"tolerations,omitempty"`
// Annotations defines the annotations placed on the istio ingress controller deployment
Annotations map[string]string `json:"annotations,omitempty"`
TLSOptions *v1beta1.TLSOptions `json:"gatewayConfig,omitempty"`
VirtualServiceAnnotations map[string]string `json:"virtualServiceAnnotations,omitempty"`
// Envs allows to add additional env vars to the istio meshgateway resource
Envs []*corev1.EnvVar `json:"envs,omitempty"`
// If specified and supported by the platform, traffic through the
// cloud-provider load-balancer will be restricted to the specified client
// IPs. This field will be ignored if the
// cloud-provider does not support the feature."
// More info: https://kubernetes.io/docs/tasks/access-application-cluster/configure-cloud-provider-firewall/
// +optional
LoadBalancerSourceRanges []string `json:"loadBalancerSourceRanges,omitempty"`
}
func (iIConfig *IstioIngressConfig) GetAnnotations() map[string]string {
return util.CloneMap(iIConfig.Annotations)
}
// GetVirtualServiceAnnotations returns a copy of the VirtualServiceAnnotations field
func (iIConfig *IstioIngressConfig) GetVirtualServiceAnnotations() map[string]string {
return util.CloneMap(iIConfig.VirtualServiceAnnotations)
}
// GetLoadBalancerSourceRanges returns LoadBalancerSourceRanges to use for Istio Meshagetway generated LoadBalancer
func (iIConfig *IstioIngressConfig) GetLoadBalancerSourceRanges() []string {
return iIConfig.LoadBalancerSourceRanges
}
// MonitoringConfig defines the config for monitoring Kafka and Cruise Control
type MonitoringConfig struct {
JmxImage string `json:"jmxImage,omitempty"`
PathToJar string `json:"pathToJar,omitempty"`
KafkaJMXExporterConfig string `json:"kafkaJMXExporterConfig,omitempty"`
CCJMXExporterConfig string `json:"cCJMXExporterConfig,omitempty"`
}
// StorageConfig defines the broker storage configuration
type StorageConfig struct {
MountPath string `json:"mountPath"`
// If set https://kubernetes.io/docs/concepts/storage/volumes/#persistentvolumeclaim is used
// as storage for Kafka broker log dirs. Either `pvcSpec` or `emptyDir` has to be set.
// When both `pvcSpec` and `emptyDir` fields are set
// the `pvcSpec` is used by default.
// +optional
PvcSpec *corev1.PersistentVolumeClaimSpec `json:"pvcSpec,omitempty"`
// If set https://kubernetes.io/docs/concepts/storage/volumes#emptydir is used
// as storage for Kafka broker log dirs. The use of empty dir as Kafka broker storage is useful in development
// environments where data loss is not a concern as data stored on emptydir backed storage is lost at pod restarts.
// Either `pvcSpec` or `emptyDir` has to be set.
// When both `pvcSpec` and `emptyDir` fields are set
// the `pvcSpec` is used by default.
// +optional
EmptyDir *corev1.EmptyDirVolumeSource `json:"emptyDir,omitempty"`
}
// ListenersConfig defines the Kafka listener types
type ListenersConfig struct {
ExternalListeners []ExternalListenerConfig `json:"externalListeners,omitempty"`
InternalListeners []InternalListenerConfig `json:"internalListeners"`
SSLSecrets *SSLSecrets `json:"sslSecrets,omitempty"`
ServiceAnnotations map[string]string `json:"serviceAnnotations,omitempty"`
}
// GetServiceAnnotations returns a copy of the ServiceAnnotations field.
func (c ListenersConfig) GetServiceAnnotations() map[string]string {
return util.CloneMap(c.ServiceAnnotations)
}
func (c ExternalListenerConfig) GetAccessMethod() corev1.ServiceType {
if c.AccessMethod == "" {
return corev1.ServiceTypeLoadBalancer
}
return c.AccessMethod
}
func (c ExternalListenerConfig) GetAnyCastPort() int32 {
if c.AnyCastPort == nil {
return DefaultAnyCastPort
}
return *c.AnyCastPort
}
// GetServiceAnnotations returns a copy of the ServiceAnnotations field.
func (c IngressServiceSettings) GetServiceAnnotations() map[string]string {
return util.CloneMap(c.ServiceAnnotations)
}
// GetServiceType returns the field value of ServiceType defaults to LoadBalancer.
func (c IngressServiceSettings) GetServiceType() corev1.ServiceType {
if c.ServiceType == "" {
return corev1.ServiceTypeLoadBalancer
}
return c.ServiceType
}
// SSLSecrets defines the Kafka SSL secrets
type SSLSecrets struct {
TLSSecretName string `json:"tlsSecretName"`
JKSPasswordName string `json:"jksPasswordName,omitempty"`
Create bool `json:"create,omitempty"`
IssuerRef *cmmeta.ObjectReference `json:"issuerRef,omitempty"`
// +kubebuilder:validation:Enum={"cert-manager"}
PKIBackend PKIBackend `json:"pkiBackend,omitempty"`
}
// TODO (tinyzimmer): The above are all optional now in one way or another.
// Would be another good use-case for a pre-admission hook
// E.g. TLSSecretName and JKSPasswordName are only required if Create is false
// Or heck, do we even want to bother supporting an imported PKI?
// AlertManagerConfig defines configuration for alert manager
type AlertManagerConfig struct {
// DownScaleLimit the limit for auto-downscaling the Kafka cluster.
// Once the size of the cluster (number of brokers) reaches or falls below this limit the auto-downscaling triggered by alerts is disabled until the cluster size exceeds this limit.
// This limit is not enforced if this field is omitted or is <= 0.
DownScaleLimit int `json:"downScaleLimit,omitempty"`
// UpScaleLimit the limit for auto-upscaling the Kafka cluster.
// Once the size of the cluster (number of brokers) reaches or exceeds this limit the auto-upscaling triggered by alerts is disabled until the cluster size falls below this limit.
// This limit is not enforced if this field is omitted or is <= 0.
UpScaleLimit int `json:"upScaleLimit,omitempty"`
}
type IngressServiceSettings struct {
// In case of external listeners using LoadBalancer access method the value of this field is used to advertise the
// Kafka broker external listener instead of the public IP of the provisioned LoadBalancer service (e.g. can be used to
// advertise the listener using a URL recorded in DNS instead of public IP).
// In case of external listeners using NodePort access method the broker instead of node public IP (see "brokerConfig.nodePortExternalIP")
// is advertised on the address having the following format: <kafka-cluster-name>-<broker-id>.<namespace><value-specified-in-hostnameOverride-field>
HostnameOverride string `json:"hostnameOverride,omitempty"`
// ServiceAnnotations defines annotations which will
// be placed to the service or services created for the external listener
ServiceAnnotations map[string]string `json:"serviceAnnotations,omitempty"`
// externalTrafficPolicy denotes if this Service desires to route external
// traffic to node-local or cluster-wide endpoints. "Local" preserves the
// client source IP and avoids a second hop for LoadBalancer and Nodeport
// type services, but risks potentially imbalanced traffic spreading.
// "Cluster" obscures the client source IP and may cause a second hop to
// another node, but should have good overall load-spreading.
// +optional
ExternalTrafficPolicy corev1.ServiceExternalTrafficPolicyType `json:"externalTrafficPolicy,omitempty"`
// Service Type string describes ingress methods for a service
// Only "NodePort" and "LoadBalancer" is supported.
// Default value is LoadBalancer
ServiceType corev1.ServiceType `json:"serviceType,omitempty"`
}
// ExternalListenerConfig defines the external listener config for Kafka
type ExternalListenerConfig struct {
CommonListenerSpec `json:",inline"`
IngressServiceSettings `json:",inline"`
// +kubebuilder:validation:Minimum=0
// +kubebuilder:validation:Maximum=65535
// externalStartingPort is added to each broker ID to get the port number that will be used for external access to the broker.
// The choice of broker ID and externalStartingPort must satisfy 0 < broker ID + externalStartingPort <= 65535
// If accessMethod is Nodeport and externalStartingPort is set to 0 then the broker IDs are not added and the Nodeport port numbers will be chosen automatically by the K8s Service controller
ExternalStartingPort int32 `json:"externalStartingPort"`
// configuring AnyCastPort allows kafka cluster access without specifying the exact broker
AnyCastPort *int32 `json:"anyCastPort,omitempty"`
// +kubebuilder:validation:Enum=LoadBalancer;NodePort
// accessMethod defines the method which the external listener is exposed through.
// Two types are supported LoadBalancer and NodePort.
// The recommended and default is the LoadBalancer.
// NodePort should be used in Kubernetes environments with no support for provisioning Load Balancers.
// +optional
AccessMethod corev1.ServiceType `json:"accessMethod,omitempty"`
// Config allows to specify ingress controller configuration per external listener
// if set overrides the the default `KafkaClusterSpec.IstioIngressConfig` or `KafkaClusterSpec.EnvoyConfig` for this external listener.
// +optional
Config *Config `json:"config,omitempty"`
}
// Config defines the external access ingress controller configuration
type Config struct {
DefaultIngressConfig string `json:"defaultIngressConfig"`
IngressConfig map[string]IngressConfig `json:"ingressConfig,omitempty"`
}
type IngressConfig struct {
IngressServiceSettings `json:",inline"`
IstioIngressConfig *IstioIngressConfig `json:"istioIngressConfig,omitempty"`
EnvoyConfig *EnvoyConfig `json:"envoyConfig,omitempty"`
}
// InternalListenerConfig defines the internal listener config for Kafka
type InternalListenerConfig struct {
CommonListenerSpec `json:",inline"`
UsedForInnerBrokerCommunication bool `json:"usedForInnerBrokerCommunication"`
UsedForControllerCommunication bool `json:"usedForControllerCommunication,omitempty"`
}
// CommonListenerSpec defines the common building block for Listener type
type CommonListenerSpec struct {
// +kubebuilder:validation:Enum=ssl;plaintext;sasl_ssl;sasl_plaintext
Type SecurityProtocol `json:"type"`
// ServerSSLCertSecret is a reference to the Kubernetes secret that contains the server certificate for the listener to be used for SSL communication.
// The secret must contain the keystore, truststore jks files and the password for them in base64 encoded format under the keystore.jks, truststore.jks, password data fields.
// If this field is omitted koperator will auto-create a self-signed server certificate using the configuration provided in 'sslSecrets' field.
ServerSSLCertSecret *corev1.LocalObjectReference `json:"serverSSLCertSecret,omitempty"`
// SSLClientAuth specifies whether client authentication is required, requested, or not required.
// This field defaults to "required" if it is omitted
// +kubebuilder:validation:Enum=required;requested;none
SSLClientAuth SSLClientAuthentication `json:"sslClientAuth,omitempty"`
// +kubebuilder:validation:Pattern=^[a-z0-9\-]+
Name string `json:"name"`
// +kubebuilder:validation:Minimum=0
// +kubebuilder:validation:ExclusiveMinimum=true
// +kubebuilder:validation:Maximum=65535
ContainerPort int32 `json:"containerPort"`
}
func (c *CommonListenerSpec) GetServerSSLCertSecretName() string {
if c.ServerSSLCertSecret == nil {
return ""
}
return c.ServerSSLCertSecret.Name
}
// ListenerStatuses holds information about the statuses of the configured listeners.
// The internal and external listeners are stored in separate maps, and each listener can be looked up by name.
type ListenerStatuses struct {
InternalListeners map[string]ListenerStatusList `json:"internalListeners,omitempty"`
ExternalListeners map[string]ListenerStatusList `json:"externalListeners,omitempty"`
}
// ListenerStatusList can hold various amount of statuses based on the listener configuration.
type ListenerStatusList []ListenerStatus
func (l ListenerStatusList) Len() int {
return len(l)
}
func (l ListenerStatusList) Less(i, j int) bool {
return l[i].Name < l[j].Name
}
func (l ListenerStatusList) Swap(i, j int) {
l[i], l[j] = l[j], l[i]
}
// ListenerStatus holds information about the address of the listener
type ListenerStatus struct {
Name string `json:"name"`
Address string `json:"address"`
}
// +kubebuilder:object:root=true
// +kubebuilder:subresource:status
// +kubebuilder:printcolumn:JSONPath=".status.state",name="Cluster state",type="string"
// +kubebuilder:printcolumn:JSONPath=".status.alertCount",name="Cluster alert count",type="integer"
// +kubebuilder:printcolumn:JSONPath=".status.rollingUpgradeStatus.lastSuccess",name="Last successful upgrade",type="string"
// +kubebuilder:printcolumn:JSONPath=".status.rollingUpgradeStatus.errorCount",name="Upgrade error count",type="string"
// +kubebuilder:printcolumn:JSONPath=".metadata.creationTimestamp",name="Age",type="date"
// +kubebuilder:webhook:verbs=create;update,path=/validate-kafka-banzaicloud-io-v1beta1-kafkacluster,mutating=false,failurePolicy=fail,groups=kafka.banzaicloud.io,resources=kafkaclusters,versions=v1beta1,name=kafkaclusters.kafka.banzaicloud.io,sideEffects=None,admissionReviewVersions=v1
// KafkaCluster is the Schema for the kafkaclusters API
type KafkaCluster struct {
metav1.TypeMeta `json:",inline"`
metav1.ObjectMeta `json:"metadata,omitempty"`
Spec KafkaClusterSpec `json:"spec,omitempty"`
Status KafkaClusterStatus `json:"status,omitempty"`
}
// +kubebuilder:object:root=true
// KafkaClusterList contains a list of KafkaCluster
type KafkaClusterList struct {
metav1.TypeMeta `json:",inline"`
metav1.ListMeta `json:"metadata,omitempty"`
Items []KafkaCluster `json:"items"`
}
func init() {
SchemeBuilder.Register(&KafkaCluster{}, &KafkaClusterList{})
}
// GetResources returns the IstioIngress specific Kubernetes resources
func (iIConfig *IstioIngressConfig) GetResources() *corev1.ResourceRequirements {
if iIConfig.Resources != nil {
return iIConfig.Resources
}
return &corev1.ResourceRequirements{
Requests: corev1.ResourceList{
"cpu": resource.MustParse("100m"),
"memory": resource.MustParse("128Mi"),
},
Limits: corev1.ResourceList{
"cpu": resource.MustParse("2000m"),
"memory": resource.MustParse("1024Mi"),
},
}
}
// GetListenerName returns the prepared listener name
func (lP *CommonListenerSpec) GetListenerServiceName() string {
if !strings.HasPrefix(lP.Name, "tcp-") {
return "tcp-" + lP.Name
}
return lP.Name
}
// GetReplicas returns replicas used by the Istio Ingress deployment
func (iIConfig *IstioIngressConfig) GetReplicas() int32 {
if iIConfig.Replicas == 0 {
return 1
}
return iIConfig.Replicas
}
// GetClientSSLCertSecretName returns the ClientSSLCertSecretName. It returns empty string if It's not specified
func (k *KafkaClusterSpec) GetClientSSLCertSecretName() string {
if k.ClientSSLCertSecret == nil {
return ""
}
return k.ClientSSLCertSecret.Name
}
// IsClientSSLSecretPresent returns true if ssl client certifications have been set for the operator and cruise control.
func (k *KafkaClusterSpec) IsClientSSLSecretPresent() bool {
return k.ListenersConfig.SSLSecrets != nil || k.GetClientSSLCertSecretName() != ""
}
// GetIngressController returns the default Envoy ingress controller if not specified otherwise
func (kSpec *KafkaClusterSpec) GetIngressController() string {
if kSpec.IngressController == "" {
return "envoy"
}
return kSpec.IngressController
}
// GetKubernetesClusterDomain returns the default domain if not specified otherwise
func (kSpec *KafkaClusterSpec) GetKubernetesClusterDomain() string {
if kSpec.KubernetesClusterDomain == "" {
return "cluster.local"
}
return kSpec.KubernetesClusterDomain
}
// GetZkPath returns the default "/" ZkPath if not specified otherwise
func (kSpec *KafkaClusterSpec) GetZkPath() string {
const prefix = "/"
if kSpec.ZKPath == "" {
return prefix
}
if !strings.HasPrefix(kSpec.ZKPath, prefix) {
return prefix + kSpec.ZKPath
}
return kSpec.ZKPath
}
// GetClusterImage returns the default container image for Kafka Cluster
func (kSpec *KafkaClusterSpec) GetClusterImage() string {
if kSpec.ClusterImage != "" {
return kSpec.ClusterImage
}
return "ghcr.io/banzaicloud/kafka:2.13-3.1.0"
}
// GetClusterMetricsReporterImage returns the default container image for Kafka Cluster
func (kSpec *KafkaClusterSpec) GetClusterMetricsReporterImage() string {
if kSpec.ClusterMetricsReporterImage != "" {
return kSpec.ClusterMetricsReporterImage
}
return kSpec.CruiseControlConfig.GetCCImage()
}
func (cTaskSpec *CruiseControlTaskSpec) GetDurationMinutes() float64 {
if cTaskSpec.RetryDurationMinutes == 0 {
return 5
}
return float64(cTaskSpec.RetryDurationMinutes)
}
// GetLoadBalancerSourceRanges returns LoadBalancerSourceRanges to use for Envoy generated LoadBalancer
func (eConfig *EnvoyConfig) GetLoadBalancerSourceRanges() []string {
return eConfig.LoadBalancerSourceRanges
}
// GetAnnotations returns Annotations to use for Envoy generated Deployment and Pods
func (eConfig *EnvoyConfig) GetAnnotations() map[string]string {
return util.CloneMap(eConfig.Annotations)
}
// GetDistruptionBudget returns DisruptionBudget to use for Envoy generated Pods
func (eConfig *EnvoyConfig) GetDistruptionBudget() DisruptionBudgetWithStrategy {
if eConfig.DisruptionBudget != nil {
return *eConfig.DisruptionBudget
}
return DisruptionBudgetWithStrategy{}
}
// GetReplicas returns replicas used by the Envoy deployment
func (eConfig *EnvoyConfig) GetReplicas() int32 {
if eConfig.Replicas == 0 {
return 1
}
return eConfig.Replicas
}
// GetServiceAccount returns the Kubernetes Service Account to use for Kafka Cluster
func (bConfig *BrokerConfig) GetServiceAccount() string {
if bConfig.ServiceAccountName != "" {
return bConfig.ServiceAccountName
}
return DefaultServiceAccountName
}
// GetServiceAccount returns the Kubernetes Service Account to use for EnvoyConfig
func (eConfig *EnvoyConfig) GetServiceAccount() string {
if eConfig.ServiceAccountName != "" {
return eConfig.ServiceAccountName
}
return DefaultServiceAccountName
}
// GetServiceAccount returns the Kubernetes Service Account to use for CruiseControl
func (cConfig *CruiseControlConfig) GetServiceAccount() string {
if cConfig.ServiceAccountName != "" {
return cConfig.ServiceAccountName
}
return DefaultServiceAccountName
}
// GetTolerations returns the tolerations for the given broker
func (bConfig *BrokerConfig) GetTolerations() []corev1.Toleration {
return bConfig.Tolerations
}
// GetTolerations returns the tolerations for envoy
func (eConfig *EnvoyConfig) GetTolerations() []corev1.Toleration {
return eConfig.Tolerations
}
// GetTolerations returns the tolerations for cruise control
func (cConfig *CruiseControlConfig) GetTolerations() []corev1.Toleration {
return cConfig.Tolerations
}
// GetTerminationGracePeriod returns the termination grace period for the broker pod
func (bConfig *BrokerConfig) GetTerminationGracePeriod() int64 {
if bConfig.TerminationGracePeriod == nil {
return DefaultBrokerTerminationGracePeriod
}
return *bConfig.TerminationGracePeriod
}
// GetNodeSelector returns the node selector for cruise control
func (cConfig *CruiseControlConfig) GetNodeSelector() map[string]string {
return cConfig.NodeSelector
}
// GetAffinity returns the Affinity config for cruise control
func (cConfig *CruiseControlConfig) GetAffinity() *corev1.Affinity {
return cConfig.Affinity
}
// GetNodeSelector returns the node selector for envoy
func (eConfig *EnvoyConfig) GetNodeSelector() map[string]string {
return eConfig.NodeSelector
}
// GetAffinity returns the Affinity config for envoy
func (eConfig *EnvoyConfig) GetAffinity() *corev1.Affinity {
return eConfig.Affinity
}
// GetTopologySpreadConstaints returns the Affinity config for envoy
func (eConfig *EnvoyConfig) GetTopologySpreadConstaints() []corev1.TopologySpreadConstraint {
return eConfig.TopologySpreadConstraints
}
// GetPodSecurityContext returns the security context for the envoy deployment podspec.
func (eConfig *EnvoyConfig) GetPodSecurityContext() *corev1.PodSecurityContext {
if eConfig == nil {
return nil
}
return eConfig.PodSecurityContext
}
// GetPriorityClassName returns the priority class name for envoy
func (eConfig *EnvoyConfig) GetPriorityClassName() string {
return eConfig.PriorityClassName
}
// GetNodeSelector returns the node selector for the given broker
func (bConfig *BrokerConfig) GetNodeSelector() map[string]string {
return bConfig.NodeSelector
}
// GetPriorityClassName returns the priority class name for the given broker
func (bConfig *BrokerConfig) GetPriorityClassName() string {
return bConfig.PriorityClassName
}
// GetImagePullSecrets returns the list of Secrets needed to pull Containers images from private repositories
func (bConfig *BrokerConfig) GetImagePullSecrets() []corev1.LocalObjectReference {
return bConfig.ImagePullSecrets
}
// GetBrokerAnnotations returns the annotations that are applied to broker pods
func (bConfig *BrokerConfig) GetBrokerAnnotations() map[string]string {
return util.CloneMap(bConfig.BrokerAnnotations)
}
// GetBrokerLabels returns the labels that are applied to broker pods
func (bConfig *BrokerConfig) GetBrokerLabels(kafkaClusterName string, brokerId int32) map[string]string {
return util.MergeLabels(
bConfig.BrokerLabels,
util.LabelsForKafka(kafkaClusterName),
map[string]string{BrokerIdLabelKey: fmt.Sprintf("%d", brokerId)},
)
}
// GetCruiseControlAnnotations return the annotations which applied to CruiseControl pod
func (cConfig *CruiseControlConfig) GetCruiseControlAnnotations() map[string]string {
return util.CloneMap(cConfig.CruiseControlAnnotations)
}
// GetImagePullSecrets returns the list of Secrets needed to pull Containers images from private repositories
func (eConfig *EnvoyConfig) GetImagePullSecrets() []corev1.LocalObjectReference {
return eConfig.ImagePullSecrets
}
// GetImagePullSecrets returns the list of Secrets needed to pull Containers images from private repositories
func (cConfig *CruiseControlConfig) GetImagePullSecrets() []corev1.LocalObjectReference {
return cConfig.ImagePullSecrets
}
// GetPriorityClassName returns the priority class name for the CruiseControl pod
func (cConfig *CruiseControlConfig) GetPriorityClassName() string {
return cConfig.PriorityClassName
}
// GetResources returns the envoy specific Kubernetes resource
func (eConfig *EnvoyConfig) GetResources() *corev1.ResourceRequirements {
if eConfig.Resources != nil {
return eConfig.Resources
}
return &corev1.ResourceRequirements{
Limits: corev1.ResourceList{
"cpu": resource.MustParse("100m"),
"memory": resource.MustParse("100Mi"),
},
Requests: corev1.ResourceList{
"cpu": resource.MustParse("100m"),
"memory": resource.MustParse("100Mi"),
},
}
}
// GetConcurrency returns envoy concurrency.
// Defines the number of worker threads envoy pod should run.
// If not specified defaults to the number of hardware threads on the underlying kubernetes node.
// See https://www.envoyproxy.io/docs/envoy/latest/operations/cli#cmdoption-concurrency
func (eConfig *EnvoyConfig) GetConcurrency() int32 {
if eConfig.CommandLineArgs == nil {
return 0
}
return eConfig.CommandLineArgs.Concurrency
}
// GetResources returns the CC specific Kubernetes resource
func (cConfig *CruiseControlConfig) GetResources() *corev1.ResourceRequirements {
if cConfig.Resources != nil {
return cConfig.Resources
}
return &corev1.ResourceRequirements{
Limits: corev1.ResourceList{
"cpu": resource.MustParse("200m"),
"memory": resource.MustParse("768Mi"),
},
Requests: corev1.ResourceList{
"cpu": resource.MustParse("200m"),
"memory": resource.MustParse("768Mi"),
},
}
}
// GetResources returns the broker specific Kubernetes resource
func (bConfig *BrokerConfig) GetResources() *corev1.ResourceRequirements {
if bConfig.Resources != nil {
return bConfig.Resources
}
return &corev1.ResourceRequirements{
Limits: corev1.ResourceList{
"cpu": resource.MustParse("1500m"),
"memory": resource.MustParse("3Gi"),
},
Requests: corev1.ResourceList{
"cpu": resource.MustParse("1000m"),
"memory": resource.MustParse("2Gi"),
},
}
}
// GetKafkaHeapOpts returns the broker specific Heap settings
func (bConfig *BrokerConfig) GetKafkaHeapOpts() string {
if bConfig.KafkaHeapOpts != "" {
return bConfig.KafkaHeapOpts
}
return "-Xmx2G -Xms2G"
}
// GetKafkaPerfJmvOpts returns the broker specific Perf JVM settings
func (bConfig *BrokerConfig) GetKafkaPerfJmvOpts() string {
if bConfig.KafkaJVMPerfOpts != "" {
return bConfig.KafkaJVMPerfOpts