sidecar

package
v1.10.3 Latest Latest
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 Go to latest Published: Mar 13, 2023 License: Apache-2.0 Imports: 19 Imported by: 0

Documentation

Overview

package sidecar contains helpers to build the Container object for Kubernetes to deploy the Dapr sidecar container.

Index

Constants

View Source 
const (
	SidecarContainerName           = "daprd" // Name of the Dapr sidecar container
	SidecarHTTPPort                = 3500
	SidecarAPIGRPCPort             = 50001
	SidecarInternalGRPCPort        = 50002
	SidecarPublicPort              = 3501
	SidecarHTTPPortName            = "dapr-http"
	SidecarGRPCPortName            = "dapr-grpc"
	SidecarInternalGRPCPortName    = "dapr-internal"
	SidecarMetricsPortName         = "dapr-metrics"
	SidecarDebugPortName           = "dapr-debug"
	SidecarHealthzPath             = "healthz"
	APIVersionV1                   = "v1.0"
	UnixDomainSocketVolume         = "dapr-unix-domain-socket" // Name of the Unix domain socket volume.
	UserContainerDaprHTTPPortName  = "DAPR_HTTP_PORT"          // Name of the variable exposed to the app containing the Dapr HTTP port.
	UserContainerDaprGRPCPortName  = "DAPR_GRPC_PORT"          // Name of the variable exposed to the app containing the Dapr gRPC port.
	PatchPathContainers            = "/spec/containers"
	PatchPathVolumes               = "/spec/volumes"
	TokenVolumeKubernetesMountPath = "/var/run/secrets/dapr.io/sentrytoken" /* #nosec */ // Mount path for the Kubernetes service account volume with the sentry token.
	TokenVolumeName                = "dapr-identity-token"                  /* #nosec */ // Name of the volume with the service account token for daprd.
)

Variables

View Source 
var (
	// Dapr API service.
	ServiceAPI = Service{"dapr-api", 80}
	// Dapr placement service.
	ServicePlacement = Service{"dapr-placement-server", 50005}
	// Dapr sentry service.
	ServiceSentry = Service{"dapr-sentry", 80}
)
View Source 
var DaprPortEnv = []corev1.EnvVar{
	{
		Name:  UserContainerDaprHTTPPortName,
		Value: strconv.Itoa(SidecarHTTPPort),
	},
	{
		Name:  UserContainerDaprGRPCPortName,
		Value: strconv.Itoa(SidecarAPIGRPCPort),
	},
}

DaprPortEnv contains the env vars that are set in containers to pass the ports used by Dapr.

Functions

func GetAppID 

func GetAppID(pod metaV1.ObjectMeta) string

GetAppID returns the app ID from the pod's annotation, or uses the pod's name as fallback.

func GetSidecarContainer 

func GetSidecarContainer(cfg ContainerConfig) (*corev1.Container, error)

GetSidecarContainer returns the Container object for the sidecar.

func GetTokenVolume added in v1.10.0 

func GetTokenVolume() corev1.Volume

GetTokenVolume returns the volume projection for the Kubernetes service account. Requests a new projected volume with a service account token for our specific audience.

func GetTrustAnchorsAndCertChain 

func GetTrustAnchorsAndCertChain(ctx context.Context, kubeClient kubernetes.Interface, namespace string) (string, string, string)

GetTrustAnchorsAndCertChain returns the trust anchor and certs.

func GetUnixDomainSocketVolumeMount added in v1.10.0 

func GetUnixDomainSocketVolumeMount(pod *corev1.Pod) *corev1.VolumeMount

GetUnixDomainSocketVolumeMount returns a volume mount for the pod to append the UNIX domain socket.

func GetVolumeMounts 

func GetVolumeMounts(pod corev1.Pod) []corev1.VolumeMount

GetVolumeMounts returns the list of VolumeMount's for the sidecar container.

func ParseEnvString 

func ParseEnvString(envStr string) []coreV1.EnvVar

add env-vars from annotations.

func ParseVolumeMountsString 

func ParseVolumeMountsString(volumeMountStr string, readOnly bool) []coreV1.VolumeMount

ParseVolumeMountsString parses the annotation and returns volume mounts. The format of the annotation is: "mountPath1:hostPath1,mountPath2:hostPath2" The readOnly parameter applies to all mounts.

func PodContainsSidecarContainer 

func PodContainsSidecarContainer(pod *coreV1.Pod) bool

PodContainsSidecarContainer returns true if the pod contains a sidecar container (i.e. a container named "daprd").

func ServiceAddress 

func ServiceAddress(svc Service, namespace string, clusterDomain string) string

ServiceAddress returns the address of a Dapr control plane service.

Types

type Annotations 

type Annotations map[string]string

Annotations contains the annotations for the container.

func (Annotations) Exist 

func (a Annotations) Exist(key string) bool

func (Annotations) GetBoolOrDefault 

func (a Annotations) GetBoolOrDefault(key string, defaultValue bool) bool

func (Annotations) GetInt32 

func (a Annotations) GetInt32(key string) (int32, error)

func (Annotations) GetInt32OrDefault 

func (a Annotations) GetInt32OrDefault(key string, defaultValue int32) int32

func (Annotations) GetString 

func (a Annotations) GetString(key string) string

func (Annotations) GetStringOrDefault 

func (a Annotations) GetStringOrDefault(key, defaultValue string) string

type ContainerConfig 

type ContainerConfig struct {
	AppID                        string
	Annotations                  Annotations
	CertChain                    string
	CertKey                      string
	ControlPlaneAddress          string
	DaprSidecarImage             string
	Identity                     string
	IgnoreEntrypointTolerations  []corev1.Toleration
	ImagePullPolicy              corev1.PullPolicy
	MTLSEnabled                  bool
	Namespace                    string
	PlacementServiceAddress      string
	SentryAddress                string
	Tolerations                  []corev1.Toleration
	TrustAnchors                 string
	VolumeMounts                 []corev1.VolumeMount
	ComponentsSocketsVolumeMount *corev1.VolumeMount
	RunAsNonRoot                 bool
	ReadOnlyRootFilesystem       bool
}

ContainerConfig contains the configuration for the sidecar container.

type PatchOperation 

type PatchOperation struct {
	Op    string      `json:"op"`
	Path  string      `json:"path"`
	Value interface{} `json:"value,omitempty"`
}

PatchOperation represents a discreet change to be applied to a Kubernetes resource.

func AddDaprEnvVarsToContainers 

func AddDaprEnvVarsToContainers(containers map[int]corev1.Container) []PatchOperation

AddDaprEnvVarsToContainers adds Dapr environment variables to all the containers in any Dapr-enabled pod. The containers can be injected or user-defined.

func AddServiceAccountTokenVolume added in v1.10.0 

func AddServiceAccountTokenVolume(containers []corev1.Container) []PatchOperation

AddServiceAccountTokenVolume adds the projected volume for the service account token to the daprd The containers can be injected or user-defined.

func AddSocketVolumeMountToContainers added in v1.10.0 

func AddSocketVolumeMountToContainers(containers map[int]corev1.Container, socketVolumeMount *corev1.VolumeMount) []PatchOperation

AddSocketVolumeMountToContainers adds the Dapr UNIX domain socket volume to all the containers in any Dapr-enabled pod.

func GetEnvPatchOperations added in v1.10.0 

func GetEnvPatchOperations(envs []corev1.EnvVar, addEnv []corev1.EnvVar, containerIdx int) []PatchOperation

GetEnvPatchOperations adds new environment variables only if they do not exist. It does not override existing values for those variables if they have been defined already.

func GetVolumeMountPatchOperations added in v1.10.0 

func GetVolumeMountPatchOperations(volumeMounts []corev1.VolumeMount, addMounts []corev1.VolumeMount, containerIdx int) []PatchOperation

GetVolumeMountPatchOperations gets the patch operations for volume mounts

func GetVolumesPatchOperations added in v1.10.0 

func GetVolumesPatchOperations(volumes []corev1.Volume, addVolumes []corev1.Volume, path string) []PatchOperation

type Service 

type Service struct {
	// contains filtered or unexported fields
}

Service represents a Dapr control plane service's information.

Source Files

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