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step_spec.go
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step_spec.go
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package v1alpha1
import (
"encoding/json"
"strconv"
"time"
"k8s.io/apimachinery/pkg/util/intstr"
corev1 "k8s.io/api/core/v1"
"k8s.io/utils/pointer"
)
type StepSpec struct {
// +kubebuilder:default=default
Name string `json:"name" protobuf:"bytes,6,opt,name=name"`
Cat *Cat `json:"cat,omitempty" protobuf:"bytes,15,opt,name=cat"`
Container *Container `json:"container,omitempty" protobuf:"bytes,1,opt,name=container"`
Handler *Handler `json:"handler,omitempty" protobuf:"bytes,7,opt,name=handler"`
Git *Git `json:"git,omitempty" protobuf:"bytes,12,opt,name=git"`
Filter Filter `json:"filter,omitempty" protobuf:"bytes,8,opt,name=filter,casttype=Filter"`
Map Map `json:"map,omitempty" protobuf:"bytes,9,opt,name=map,casttype=Map"`
Group *Group `json:"group,omitempty" protobuf:"bytes,11,opt,name=group"`
Flatten *Flatten `json:"flatten,omitempty" protobuf:"bytes,25,opt,name=flatten"`
Expand *Expand `json:"expand,omitempty" protobuf:"bytes,26,opt,name=expand"`
// +kubebuilder:default=1
Replicas uint32 `json:"replicas,omitempty" protobuf:"varint,23,opt,name=replicas"`
Scale *Scale `json:"scale,omitempty" protobuf:"bytes,24,opt,name=scale"`
// +patchStrategy=merge
// +patchMergeKey=name
Sources Sources `json:"sources,omitempty" protobuf:"bytes,3,rep,name=sources"`
// +patchStrategy=merge
// +patchMergeKey=name
Sinks []Sink `json:"sinks,omitempty" protobuf:"bytes,4,rep,name=sinks"`
// +kubebuilder:default=OnFailure
RestartPolicy corev1.RestartPolicy `json:"restartPolicy,omitempty" protobuf:"bytes,5,opt,name=restartPolicy,casttype=k8s.io/api/core/v1.RestartPolicy"`
Terminator bool `json:"terminator,omitempty" protobuf:"varint,10,opt,name=terminator"` // if this step terminates, terminate all steps in the pipeline
// +patchStrategy=merge
// +patchMergeKey=name
Volumes []corev1.Volume `json:"volumes,omitempty" protobuf:"bytes,13,rep,name=volumes"`
// +kubebuilder:default=pipeline
ServiceAccountName string `json:"serviceAccountName,omitempty" protobuf:"bytes,14,opt,name=serviceAccountName"`
Metadata *Metadata `json:"metadata,omitempty" protobuf:"bytes,16,opt,name=metadata"`
NodeSelector map[string]string `json:"nodeSelector,omitempty" protobuf:"bytes,17,rep,name=nodeSelector"`
Affinity *corev1.Affinity `json:"affinity,omitempty" protobuf:"bytes,18,opt,name=affinity"`
Tolerations []corev1.Toleration `json:"tolerations,omitempty" protobuf:"bytes,19,rep,name=tolerations"`
}
type GetPodSpecReq struct {
PipelineName string `protobuf:"bytes,1,opt,name=pipelineName"`
Namespace string `protobuf:"bytes,2,opt,name=namespace"`
Replica int32 `protobuf:"varint,3,opt,name=replica"`
ImageFormat string `protobuf:"bytes,4,opt,name=imageFormat"`
RunnerImage string `protobuf:"bytes,5,opt,name=runnerImage"`
PullPolicy corev1.PullPolicy `protobuf:"bytes,6,opt,name=pullPolicy,casttype=k8s.io/api/core/v1.PullPolicy"`
UpdateInterval time.Duration `protobuf:"varint,7,opt,name=updateInterval,casttype=time.Duration"`
StepStatus StepStatus `protobuf:"bytes,8,opt,name=stepStatus"`
BearerToken string `protobuf:"bytes,9,opt,name=bearerToken"`
}
func (in StepSpec) GetPodSpec(req GetPodSpecReq) corev1.PodSpec {
volume := corev1.Volume{
Name: "var-run-argo-dataflow",
VolumeSource: corev1.VolumeSource{EmptyDir: &corev1.EmptyDirVolumeSource{}},
}
stepSpec, _ := json.Marshal(in)
stepStatus, _ := json.Marshal(req.StepStatus)
volumeMounts := []corev1.VolumeMount{{Name: volume.Name, MountPath: PathVarRun}}
envVars := []corev1.EnvVar{
{Name: EnvDataflowBearerToken, Value: req.BearerToken},
{Name: EnvNamespace, Value: req.Namespace},
{Name: EnvPipelineName, Value: req.PipelineName},
{Name: EnvReplica, Value: strconv.Itoa(int(req.Replica))},
{Name: EnvStepStatus, Value: string(stepStatus)},
{Name: EnvStepSpec, Value: string(stepSpec)},
{Name: EnvUpdateInterval, Value: req.UpdateInterval.String()},
}
return corev1.PodSpec{
Volumes: append(in.Volumes, volume),
RestartPolicy: in.RestartPolicy,
NodeSelector: in.NodeSelector,
ServiceAccountName: in.ServiceAccountName,
SecurityContext: &corev1.PodSecurityContext{
RunAsNonRoot: pointer.BoolPtr(true),
RunAsUser: pointer.Int64Ptr(9653),
},
Affinity: in.Affinity,
Tolerations: in.Tolerations,
InitContainers: []corev1.Container{
{
Name: CtrInit,
Image: req.RunnerImage,
ImagePullPolicy: req.PullPolicy,
Args: []string{"init"},
Env: envVars,
VolumeMounts: volumeMounts,
Resources: SmallResourceRequirements,
},
},
Containers: []corev1.Container{
{
Name: CtrSidecar,
Image: req.RunnerImage,
ImagePullPolicy: req.PullPolicy,
Args: []string{"sidecar"},
Env: envVars,
VolumeMounts: volumeMounts,
Resources: SmallResourceRequirements,
Ports: []corev1.ContainerPort{
{ContainerPort: 3569},
},
Lifecycle: &corev1.Lifecycle{
PreStop: &corev1.Handler{
HTTPGet: &corev1.HTTPGetAction{
Path: "/pre-stop",
Port: intstr.FromInt(3569),
},
},
},
},
in.getType().getContainer(getContainerReq{
env: []corev1.EnvVar{{Name: EnvDataflowBearerToken, Value: req.BearerToken}},
imageFormat: req.ImageFormat,
imagePullPolicy: req.PullPolicy,
lifecycle: &corev1.Lifecycle{
PreStop: &corev1.Handler{
Exec: &corev1.ExecAction{
Command: []string{PathPreStop},
},
},
},
runnerImage: req.RunnerImage,
volumeMount: corev1.VolumeMount{Name: "var-run-argo-dataflow", MountPath: "/var/run/argo-dataflow"},
}),
},
}
}
func (in StepSpec) GetIn() *Interface {
if in.Container != nil {
return in.Container.GetIn()
}
return DefaultInterface
}
func (in StepSpec) getType() containerSupplier {
if x := in.Cat; x != nil {
return x
} else if x := in.Container; x != nil {
return x
} else if x := in.Expand; x != nil {
return x
} else if x := in.Filter; x != "" {
return x
} else if x := in.Flatten; x != nil {
return x
} else if x := in.Git; x != nil {
return x
} else if x := in.Group; x != nil {
return x
} else if x := in.Handler; x != nil {
return x
} else if x := in.Map; x != "" {
return x
} else {
panic("invalid step spec")
}
}
func (in StepSpec) CalculateReplicas(pending int) int {
if in.Scale == nil {
return -1
}
return in.Scale.Calculate(pending)
}