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workflow_types.go
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workflow_types.go
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package v1alpha1
import (
"encoding/json"
"fmt"
"hash/fnv"
apiv1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
)
// TemplateType is the type of a template
type TemplateType string
// Possible template types
const (
TemplateTypeContainer TemplateType = "Container"
TemplateTypeSteps TemplateType = "Steps"
TemplateTypeScript TemplateType = "Script"
TemplateTypeResource TemplateType = "Resource"
TemplateTypeDAG TemplateType = "DAG"
TemplateTypeSuspend TemplateType = "Suspend"
TemplateTypeUnknown TemplateType = "Unknown"
)
// NodePhase is a label for the condition of a node at the current time.
type NodePhase string
// Workflow and node statuses
const (
NodePending NodePhase = "Pending"
NodeRunning NodePhase = "Running"
NodeSucceeded NodePhase = "Succeeded"
NodeSkipped NodePhase = "Skipped"
NodeFailed NodePhase = "Failed"
NodeError NodePhase = "Error"
)
// NodeType is the type of a node
type NodeType string
// Node types
const (
NodeTypePod NodeType = "Pod"
NodeTypeSteps NodeType = "Steps"
NodeTypeStepGroup NodeType = "StepGroup"
NodeTypeDAG NodeType = "DAG"
NodeTypeTaskGroup NodeType = "TaskGroup"
NodeTypeRetry NodeType = "Retry"
NodeTypeSkipped NodeType = "Skipped"
NodeTypeSuspend NodeType = "Suspend"
)
// PodGCStrategy is the strategy when to delete completed pods for GC.
type PodGCStrategy string
// PodGCStrategy
const (
PodGCOnPodCompletion PodGCStrategy = "OnPodCompletion"
PodGCOnPodSuccess PodGCStrategy = "OnPodSuccess"
PodGCOnWorkflowCompletion PodGCStrategy = "OnWorkflowCompletion"
PodGCOnWorkflowSuccess PodGCStrategy = "OnWorkflowSuccess"
)
// TemplateGetter is an interface to get templates.
type TemplateGetter interface {
GetNamespace() string
GetName() string
GroupVersionKind() schema.GroupVersionKind
GetTemplateByName(name string) *Template
GetTemplateScope() string
}
// TemplateHolder is an interface for holders of templates.
type TemplateHolder interface {
GetTemplateName() string
GetTemplateRef() *TemplateRef
IsResolvable() bool
}
// TemplateStorage is an interface of template storage getter and setter.
type TemplateStorage interface {
GetStoredTemplate(templateScope string, holder TemplateHolder) *Template
SetStoredTemplate(templateScope string, holder TemplateHolder, tmpl *Template) (bool, error)
}
// Workflow is the definition of a workflow resource
// +genclient
// +genclient:noStatus
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
type Workflow struct {
metav1.TypeMeta `json:",inline"`
metav1.ObjectMeta `json:"metadata" protobuf:"bytes,1,opt,name=metadata"`
Spec WorkflowSpec `json:"spec" protobuf:"bytes,2,opt,name=spec "`
Status WorkflowStatus `json:"status" protobuf:"bytes,3,opt,name=status"`
}
// Workflows is a sort interface which sorts running jobs earlier before considering FinishedAt
type Workflows []Workflow
func (w Workflows) Len() int { return len(w) }
func (w Workflows) Swap(i, j int) { w[i], w[j] = w[j], w[i] }
func (w Workflows) Less(i, j int) bool {
iStart := w[i].ObjectMeta.CreationTimestamp
iFinish := w[i].Status.FinishedAt
jStart := w[j].ObjectMeta.CreationTimestamp
jFinish := w[j].Status.FinishedAt
if iFinish.IsZero() && jFinish.IsZero() {
return !iStart.Before(&jStart)
}
if iFinish.IsZero() && !jFinish.IsZero() {
return true
}
if !iFinish.IsZero() && jFinish.IsZero() {
return false
}
return jFinish.Before(&iFinish)
}
// WorkflowList is list of Workflow resources
// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
type WorkflowList struct {
metav1.TypeMeta `json:",inline"`
metav1.ListMeta `json:"metadata" protobuf:"bytes,1,opt,name=metadata"`
Items Workflows `json:"items" protobuf:"bytes,2,opt,name=items"`
}
var _ TemplateGetter = &Workflow{}
var _ TemplateStorage = &Workflow{}
// TTLStrategy is the strategy for the time to live depending on if the workflow succeded or failed
type TTLStrategy struct {
SecondsAfterCompletion *int32 `json:"secondsAfterCompletion,omitempty" protobuf:"bytes,1,opt,name=secondsAfterCompletion"`
SecondsAfterSuccess *int32 `json:"secondsAfterSuccess,omitempty" protobuf:"bytes,2,opt,name=secondsAfterSuccess"`
SecondsAfterFailure *int32 `json:"secondsAfterFailure,omitempty" protobuf:"bytes,3,opt,name=secondsAfterFailure"`
}
// WorkflowSpec is the specification of a Workflow.
type WorkflowSpec struct {
// Templates is a list of workflow templates used in a workflow
// +patchStrategy=merge
// +patchMergeKey=name
Templates []Template `json:"templates" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,1,opt,name=templates"`
// Entrypoint is a template reference to the starting point of the workflow
Entrypoint string `json:"entrypoint" protobuf:"bytes,2,opt,name=entrypoint"`
// Arguments contain the parameters and artifacts sent to the workflow entrypoint
// Parameters are referencable globally using the 'workflow' variable prefix.
// e.g. {{workflow.parameters.myparam}}
Arguments Arguments `json:"arguments,omitempty" protobuf:"bytes,3,opt,name=arguments"`
// ServiceAccountName is the name of the ServiceAccount to run all pods of the workflow as.
ServiceAccountName string `json:"serviceAccountName,omitempty" protobuf:"bytes,4,opt,name=serviceAccountName"`
// AutomountServiceAccountToken indicates whether a service account token should be automatically mounted in pods.
// ServiceAccountName of ExecutorConfig must be specified if this value is false.
AutomountServiceAccountToken *bool `json:"automountServiceAccountToken,omitempty" protobuf:"varint,28,opt,name=automountServiceAccountToken"`
// Executor holds configurations of executor containers of the workflow.
Executor *ExecutorConfig `json:"executor,omitempty" protobuf:"bytes,29,opt,name=executor"`
// Volumes is a list of volumes that can be mounted by containers in a workflow.
// +patchStrategy=merge
// +patchMergeKey=name
Volumes []apiv1.Volume `json:"volumes,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,5,opt,name=volumes"`
// VolumeClaimTemplates is a list of claims that containers are allowed to reference.
// The Workflow controller will create the claims at the beginning of the workflow
// and delete the claims upon completion of the workflow
// +patchStrategy=merge
// +patchMergeKey=name
VolumeClaimTemplates []apiv1.PersistentVolumeClaim `json:"volumeClaimTemplates,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,6,opt,name=volumeClaimTemplates"`
// Parallelism limits the max total parallel pods that can execute at the same time in a workflow
Parallelism *int64 `json:"parallelism,omitempty" protobuf:"bytes,7,opt,name=parallelism"`
// ArtifactRepositoryRef specifies the configMap name and key containing the artifact repository config.
ArtifactRepositoryRef *ArtifactRepositoryRef `json:"artifactRepositoryRef,omitempty" protobuf:"bytes,8,opt,name=artifactRepositoryRef"`
// Suspend will suspend the workflow and prevent execution of any future steps in the workflow
Suspend *bool `json:"suspend,omitempty" protobuf:"bytes,9,opt,name=suspend"`
// NodeSelector is a selector which will result in all pods of the workflow
// to be scheduled on the selected node(s). This is able to be overridden by
// a nodeSelector specified in the template.
NodeSelector map[string]string `json:"nodeSelector,omitempty" protobuf:"bytes,10,opt,name=nodeSelector"`
// Affinity sets the scheduling constraints for all pods in the workflow.
// Can be overridden by an affinity specified in the template
Affinity *apiv1.Affinity `json:"affinity,omitempty" protobuf:"bytes,11,opt,name=affinity"`
// Tolerations to apply to workflow pods.
// +patchStrategy=merge
// +patchMergeKey=key
Tolerations []apiv1.Toleration `json:"tolerations,omitempty" patchStrategy:"merge" patchMergeKey:"key" protobuf:"bytes,12,opt,name=tolerations"`
// ImagePullSecrets is a list of references to secrets in the same namespace to use for pulling any images
// in pods that reference this ServiceAccount. ImagePullSecrets are distinct from Secrets because Secrets
// can be mounted in the pod, but ImagePullSecrets are only accessed by the kubelet.
// More info: https://kubernetes.io/docs/concepts/containers/images/#specifying-imagepullsecrets-on-a-pod
// +patchStrategy=merge
// +patchMergeKey=name
ImagePullSecrets []apiv1.LocalObjectReference `json:"imagePullSecrets,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,13,opt,name=imagePullSecrets"`
// Host networking requested for this workflow pod. Default to false.
HostNetwork *bool `json:"hostNetwork,omitempty" protobuf:"bytes,14,opt,name=hostNetwork"`
// Set DNS policy for the pod.
// Defaults to "ClusterFirst".
// Valid values are 'ClusterFirstWithHostNet', 'ClusterFirst', 'Default' or 'None'.
// DNS parameters given in DNSConfig will be merged with the policy selected with DNSPolicy.
// To have DNS options set along with hostNetwork, you have to specify DNS policy
// explicitly to 'ClusterFirstWithHostNet'.
DNSPolicy *apiv1.DNSPolicy `json:"dnsPolicy,omitempty" protobuf:"bytes,15,opt,name=dnsPolicy"`
// PodDNSConfig defines the DNS parameters of a pod in addition to
// those generated from DNSPolicy.
DNSConfig *apiv1.PodDNSConfig `json:"dnsConfig,omitempty" protobuf:"bytes,16,opt,name=dnsConfig"`
// OnExit is a template reference which is invoked at the end of the
// workflow, irrespective of the success, failure, or error of the
// primary workflow.
OnExit string `json:"onExit,omitempty" protobuf:"bytes,17,opt,name=onExit"`
// TTLSecondsAfterFinished limits the lifetime of a Workflow that has finished execution
// (Succeeded, Failed, Error). If this field is set, once the Workflow finishes, it will be
// deleted after ttlSecondsAfterFinished expires. If this field is unset,
// ttlSecondsAfterFinished will not expire. If this field is set to zero,
// ttlSecondsAfterFinished expires immediately after the Workflow finishes.
// DEPRECATED: Use TTLStrategy.SecondsAfterCompletion instead.
TTLSecondsAfterFinished *int32 `json:"ttlSecondsAfterFinished,omitempty" protobuf:"bytes,18,opt,name=ttlSecondsAfterFinished"`
// TTLStrategy limits the lifetime of a Workflow that has finished execution depending on if it
// Succeeded or Failed. If this struct is set, once the Workflow finishes, it will be
// deleted after the time to live expires. If this field is unset,
// the controller config map will hold the default values
// Update
TTLStrategy *TTLStrategy `json:"ttlStrategy,omitempty" protobuf:"bytes,30,opt,name=ttlStrategy"`
// Optional duration in seconds relative to the workflow start time which the workflow is
// allowed to run before the controller terminates the workflow. A value of zero is used to
// terminate a Running workflow
ActiveDeadlineSeconds *int64 `json:"activeDeadlineSeconds,omitempty" protobuf:"bytes,19,opt,name=activeDeadlineSeconds"`
// Priority is used if controller is configured to process limited number of workflows in parallel. Workflows with higher priority are processed first.
Priority *int32 `json:"priority,omitempty" protobuf:"bytes,20,opt,name=priority"`
// Set scheduler name for all pods.
// Will be overridden if container/script template's scheduler name is set.
// Default scheduler will be used if neither specified.
// +optional
SchedulerName string `json:"schedulerName,omitempty" protobuf:"bytes,21,opt,name=schedulerName"`
// PodGC describes the strategy to use when to deleting completed pods
PodGC *PodGC `json:"podGC,omitempty" protobuf:"bytes,22,opt,name=podGC"`
// PriorityClassName to apply to workflow pods.
PodPriorityClassName string `json:"podPriorityClassName,omitempty" protobuf:"bytes,23,opt,name=podPriorityClassName"`
// Priority to apply to workflow pods.
PodPriority *int32 `json:"podPriority,omitempty" protobuf:"bytes,24,opt,name=podPriority"`
// +patchStrategy=merge
// +patchMergeKey=ip
HostAliases []apiv1.HostAlias `json:"hostAliases,omitempty" patchStrategy:"merge" patchMergeKey:"ip" protobuf:"bytes,25,opt,name=hostAliases"`
// SecurityContext holds pod-level security attributes and common container settings.
// Optional: Defaults to empty. See type description for default values of each field.
// +optional
SecurityContext *apiv1.PodSecurityContext `json:"securityContext,omitempty" protobuf:"bytes,26,opt,name=securityContext"`
// PodSpecPatch holds strategic merge patch to apply against the pod spec. Allows parameterization of
// container fields which are not strings (e.g. resource limits).
PodSpecPatch string `json:"podSpecPatch,omitempty" protobuf:"bytes,27,opt,name=podSpecPatch"`
}
type ParallelSteps struct {
Steps []WorkflowStep `protobuf:"bytes,1,rep,name=steps"`
}
func (p *ParallelSteps) UnmarshalJSON(value []byte) error {
err := json.Unmarshal(value, &p.Steps)
if err != nil {
return err
}
return nil
}
func (p *ParallelSteps) MarshalJSON() ([]byte, error) {
return json.Marshal(p.Steps)
}
func (wfs *WorkflowSpec) HasPodSpecPatch() bool {
return wfs.PodSpecPatch != ""
}
// Template is a reusable and composable unit of execution in a workflow
type Template struct {
// Name is the name of the template
Name string `json:"name" protobuf:"bytes,1,opt,name=name"`
// Template is the name of the template which is used as the base of this template.
Template string `json:"template,omitempty" protobuf:"bytes,2,opt,name=template"`
// Arguments hold arguments to the template.
Arguments Arguments `json:"arguments,omitempty" protobuf:"bytes,3,opt,name=arguments"`
// TemplateRef is the reference to the template resource which is used as the base of this template.
TemplateRef *TemplateRef `json:"templateRef,omitempty" protobuf:"bytes,4,opt,name=templateRef"`
// Inputs describe what inputs parameters and artifacts are supplied to this template
Inputs Inputs `json:"inputs,omitempty" protobuf:"bytes,5,opt,name=inputs"`
// Outputs describe the parameters and artifacts that this template produces
Outputs Outputs `json:"outputs,omitempty" protobuf:"bytes,6,opt,name=outputs"`
// NodeSelector is a selector to schedule this step of the workflow to be
// run on the selected node(s). Overrides the selector set at the workflow level.
NodeSelector map[string]string `json:"nodeSelector,omitempty" protobuf:"bytes,7,opt,name=nodeSelector"`
// Affinity sets the pod's scheduling constraints
// Overrides the affinity set at the workflow level (if any)
Affinity *apiv1.Affinity `json:"affinity,omitempty" protobuf:"bytes,8,opt,name=affinity"`
// Metdata sets the pods's metadata, i.e. annotations and labels
Metadata Metadata `json:"metadata,omitempty" protobuf:"bytes,9,opt,name=metadata"`
// Deamon will allow a workflow to proceed to the next step so long as the container reaches readiness
Daemon *bool `json:"daemon,omitempty" protobuf:"bytes,10,opt,name=daemon"`
// Steps define a series of sequential/parallel workflow steps
Steps []ParallelSteps `json:"steps,omitempty" protobuf:"bytes,11,opt,name=steps"`
// Container is the main container image to run in the pod
Container *apiv1.Container `json:"container,omitempty" protobuf:"bytes,12,opt,name=container"`
// Script runs a portion of code against an interpreter
Script *ScriptTemplate `json:"script,omitempty" protobuf:"bytes,13,opt,name=script"`
// Resource template subtype which can run k8s resources
Resource *ResourceTemplate `json:"resource,omitempty" protobuf:"bytes,14,opt,name=resource"`
// DAG template subtype which runs a DAG
DAG *DAGTemplate `json:"dag,omitempty" protobuf:"bytes,15,opt,name=dag"`
// Suspend template subtype which can suspend a workflow when reaching the step
Suspend *SuspendTemplate `json:"suspend,omitempty" protobuf:"bytes,16,opt,name=suspend"`
// Volumes is a list of volumes that can be mounted by containers in a template.
// +patchStrategy=merge
// +patchMergeKey=name
Volumes []apiv1.Volume `json:"volumes,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,17,opt,name=volumes"`
// InitContainers is a list of containers which run before the main container.
// +patchStrategy=merge
// +patchMergeKey=name
InitContainers []UserContainer `json:"initContainers,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,18,opt,name=initContainers"`
// Sidecars is a list of containers which run alongside the main container
// Sidecars are automatically killed when the main container completes
// +patchStrategy=merge
// +patchMergeKey=name
Sidecars []UserContainer `json:"sidecars,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,19,opt,name=sidecars"`
// Location in which all files related to the step will be stored (logs, artifacts, etc...).
// Can be overridden by individual items in Outputs. If omitted, will use the default
// artifact repository location configured in the controller, appended with the
// <workflowname>/<nodename> in the key.
ArchiveLocation *ArtifactLocation `json:"archiveLocation,omitempty" protobuf:"bytes,20,opt,name=archiveLocation"`
// Optional duration in seconds relative to the StartTime that the pod may be active on a node
// before the system actively tries to terminate the pod; value must be positive integer
// This field is only applicable to container and script templates.
ActiveDeadlineSeconds *int64 `json:"activeDeadlineSeconds,omitempty" protobuf:"bytes,21,opt,name=activeDeadlineSeconds"`
// RetryStrategy describes how to retry a template when it fails
RetryStrategy *RetryStrategy `json:"retryStrategy,omitempty" protobuf:"bytes,22,opt,name=retryStrategy"`
// Parallelism limits the max total parallel pods that can execute at the same time within the
// boundaries of this template invocation. If additional steps/dag templates are invoked, the
// pods created by those templates will not be counted towards this total.
Parallelism *int64 `json:"parallelism,omitempty" protobuf:"bytes,23,opt,name=parallelism"`
// Tolerations to apply to workflow pods.
// +patchStrategy=merge
// +patchMergeKey=key
Tolerations []apiv1.Toleration `json:"tolerations,omitempty" patchStrategy:"merge" patchMergeKey:"key" protobuf:"bytes,24,opt,name=tolerations"`
// If specified, the pod will be dispatched by specified scheduler.
// Or it will be dispatched by workflow scope scheduler if specified.
// If neither specified, the pod will be dispatched by default scheduler.
// +optional
SchedulerName string `json:"schedulerName,omitempty" protobuf:"bytes,25,opt,name=schedulerName"`
// PriorityClassName to apply to workflow pods.
PriorityClassName string `json:"priorityClassName,omitempty" protobuf:"bytes,26,opt,name=priorityClassName"`
// Priority to apply to workflow pods.
Priority *int32 `json:"priority,omitempty" protobuf:"bytes,27,opt,name=priority"`
// ServiceAccountName to apply to workflow pods
ServiceAccountName string `json:"serviceAccountName,omitempty" protobuf:"bytes,28,opt,name=serviceAccountName"`
// AutomountServiceAccountToken indicates whether a service account token should be automatically mounted in pods.
// ServiceAccountName of ExecutorConfig must be specified if this value is false.
AutomountServiceAccountToken *bool `json:"automountServiceAccountToken,omitempty" protobuf:"varint,32,opt,name=automountServiceAccountToken"`
// Executor holds configurations of the executor container.
Executor *ExecutorConfig `json:"executor,omitempty" protobuf:"bytes,33,opt,name=executor"`
// HostAliases is an optional list of hosts and IPs that will be injected into the pod spec
// +patchStrategy=merge
// +patchMergeKey=ip
HostAliases []apiv1.HostAlias `json:"hostAliases,omitempty" patchStrategy:"merge" patchMergeKey:"ip" protobuf:"bytes,29,opt,name=hostAliases"`
// SecurityContext holds pod-level security attributes and common container settings.
// Optional: Defaults to empty. See type description for default values of each field.
// +optional
SecurityContext *apiv1.PodSecurityContext `json:"securityContext,omitempty" protobuf:"bytes,30,opt,name=securityContext"`
// PodSpecPatch holds strategic merge patch to apply against the pod spec. Allows parameterization of
// container fields which are not strings (e.g. resource limits).
PodSpecPatch string `json:"podSpecPatch,omitempty" protobuf:"bytes,31,opt,name=podSpecPatch"`
}
var _ TemplateHolder = &Template{}
func (tmpl *Template) GetTemplateName() string {
if tmpl.Template != "" {
return tmpl.Template
} else {
return tmpl.Name
}
}
func (tmpl *Template) GetTemplateRef() *TemplateRef {
return tmpl.TemplateRef
}
func (tmpl *Template) IsResolvable() bool {
return tmpl.Template != "" || tmpl.TemplateRef != nil
}
// GetBaseTemplate returns a base template content.
func (tmpl *Template) GetBaseTemplate() *Template {
baseTemplate := tmpl.DeepCopy()
baseTemplate.Inputs = Inputs{}
return baseTemplate
}
func (tmpl *Template) HasPodSpecPatch() bool {
return tmpl.PodSpecPatch != ""
}
type Artifacts []Artifact
func (a Artifacts) GetArtifactByName(name string) *Artifact {
for _, art := range a {
if art.Name == name {
return &art
}
}
return nil
}
// Inputs are the mechanism for passing parameters, artifacts, volumes from one template to another
type Inputs struct {
// Parameters are a list of parameters passed as inputs
// +patchStrategy=merge
// +patchMergeKey=name
Parameters []Parameter `json:"parameters,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,1,opt,name=parameters"`
// Artifact are a list of artifacts passed as inputs
// +patchStrategy=merge
// +patchMergeKey=name
Artifacts Artifacts `json:"artifacts,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,2,opt,name=artifacts"`
}
// Pod metdata
type Metadata struct {
Annotations map[string]string `json:"annotations,omitempty" protobuf:"bytes,1,opt,name=annotations"`
Labels map[string]string `json:"labels,omitempty" protobuf:"bytes,2,opt,name=labels"`
}
// Parameter indicate a passed string parameter to a service template with an optional default value
type Parameter struct {
// Name is the parameter name
Name string `json:"name" protobuf:"bytes,1,opt,name=name"`
// Default is the default value to use for an input parameter if a value was not supplied
Default *string `json:"default,omitempty" protobuf:"bytes,2,opt,name=default"`
// Value is the literal value to use for the parameter.
// If specified in the context of an input parameter, the value takes precedence over any passed values
Value *string `json:"value,omitempty" protobuf:"bytes,3,opt,name=value"`
// ValueFrom is the source for the output parameter's value
ValueFrom *ValueFrom `json:"valueFrom,omitempty" protobuf:"bytes,4,opt,name=valueFrom"`
// GlobalName exports an output parameter to the global scope, making it available as
// '{{workflow.outputs.parameters.XXXX}} and in workflow.status.outputs.parameters
GlobalName string `json:"globalName,omitempty" protobuf:"bytes,5,opt,name=globalName"`
}
// ValueFrom describes a location in which to obtain the value to a parameter
type ValueFrom struct {
// Path in the container to retrieve an output parameter value from in container templates
Path string `json:"path,omitempty" protobuf:"bytes,1,opt,name=path"`
// JSONPath of a resource to retrieve an output parameter value from in resource templates
JSONPath string `json:"jsonPath,omitempty" protobuf:"bytes,2,opt,name=jsonPath"`
// JQFilter expression against the resource object in resource templates
JQFilter string `json:"jqFilter,omitempty" protobuf:"bytes,3,opt,name=jqFilter"`
// Parameter reference to a step or dag task in which to retrieve an output parameter value from
// (e.g. '{{steps.mystep.outputs.myparam}}')
Parameter string `json:"parameter,omitempty" protobuf:"bytes,4,opt,name=parameter"`
}
// Artifact indicates an artifact to place at a specified path
type Artifact struct {
// name of the artifact. must be unique within a template's inputs/outputs.
Name string `json:"name" protobuf:"bytes,1,opt,name=name"`
// Path is the container path to the artifact
Path string `json:"path,omitempty" protobuf:"bytes,2,opt,name=path"`
// mode bits to use on this file, must be a value between 0 and 0777
// set when loading input artifacts.
Mode *int32 `json:"mode,omitempty" protobuf:"varint,3,opt,name=mode"`
// From allows an artifact to reference an artifact from a previous step
From string `json:"from,omitempty" protobuf:"bytes,4,opt,name=from"`
// ArtifactLocation contains the location of the artifact
ArtifactLocation `json:",inline" protobuf:"bytes,5,opt,name=artifactLocation"`
// GlobalName exports an output artifact to the global scope, making it available as
// '{{workflow.outputs.artifacts.XXXX}} and in workflow.status.outputs.artifacts
GlobalName string `json:"globalName,omitempty" protobuf:"bytes,6,opt,name=globalName"`
// Archive controls how the artifact will be saved to the artifact repository.
Archive *ArchiveStrategy `json:"archive,omitempty" protobuf:"bytes,7,opt,name=archive"`
// Make Artifacts optional, if Artifacts doesn't generate or exist
Optional bool `json:"optional,omitempty" protobuf:"varint,8,opt,name=optional"`
}
// PodGC describes how to delete completed pods as they complete
type PodGC struct {
Strategy PodGCStrategy `json:"strategy,omitempty" protobuf:"bytes,1,opt,name=strategy,casttype=PodGCStrategy"`
}
// ArchiveStrategy describes how to archive files/directory when saving artifacts
type ArchiveStrategy struct {
Tar *TarStrategy `json:"tar,omitempty" protobuf:"bytes,1,opt,name=tar"`
None *NoneStrategy `json:"none,omitempty" protobuf:"bytes,2,opt,name=none"`
}
// TarStrategy will tar and gzip the file or directory when saving
type TarStrategy struct{}
// NoneStrategy indicates to skip tar process and upload the files or directory tree as independent
// files. Note that if the artifact is a directory, the artifact driver must support the ability to
// save/load the directory appropriately.
type NoneStrategy struct{}
// ArtifactLocation describes a location for a single or multiple artifacts.
// It is used as single artifact in the context of inputs/outputs (e.g. outputs.artifacts.artname).
// It is also used to describe the location of multiple artifacts such as the archive location
// of a single workflow step, which the executor will use as a default location to store its files.
type ArtifactLocation struct {
// ArchiveLogs indicates if the container logs should be archived
ArchiveLogs *bool `json:"archiveLogs,omitempty" protobuf:"varint,1,opt,name=archiveLogs"`
// S3 contains S3 artifact location details
S3 *S3Artifact `json:"s3,omitempty" protobuf:"bytes,2,opt,name=s3"`
// Git contains git artifact location details
Git *GitArtifact `json:"git,omitempty" protobuf:"bytes,3,opt,name=git"`
// HTTP contains HTTP artifact location details
HTTP *HTTPArtifact `json:"http,omitempty" protobuf:"bytes,4,opt,name=http"`
// Artifactory contains artifactory artifact location details
Artifactory *ArtifactoryArtifact `json:"artifactory,omitempty" protobuf:"bytes,5,opt,name=artifactory"`
// HDFS contains HDFS artifact location details
HDFS *HDFSArtifact `json:"hdfs,omitempty" protobuf:"bytes,6,opt,name=hdfs"`
// Raw contains raw artifact location details
Raw *RawArtifact `json:"raw,omitempty" protobuf:"bytes,7,opt,name=raw"`
}
type ArtifactRepositoryRef struct {
ConfigMap string `json:"configMap,omitempty" protobuf:"bytes,1,opt,name=configMap"`
Key string `json:"key,omitempty" protobuf:"bytes,2,opt,name=key"`
}
// Outputs hold parameters, artifacts, and results from a step
type Outputs struct {
// Parameters holds the list of output parameters produced by a step
// +patchStrategy=merge
// +patchMergeKey=name
Parameters []Parameter `json:"parameters,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,1,rep,name=parameters"`
// Artifacts holds the list of output artifacts produced by a step
// +patchStrategy=merge
// +patchMergeKey=name
Artifacts Artifacts `json:"artifacts,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,2,rep,name=artifacts"`
// Result holds the result (stdout) of a script template
Result *string `json:"result,omitempty" protobuf:"bytes,3,opt,name=result"`
}
// WorkflowStep is a reference to a template to execute in a series of step
type WorkflowStep struct {
// Name of the step
Name string `json:"name,omitempty" protobuf:"bytes,1,opt,name=name"`
// Template is the name of the template to execute as the step
Template string `json:"template,omitempty" protobuf:"bytes,2,opt,name=template"`
// Arguments hold arguments to the template
Arguments Arguments `json:"arguments,omitempty" protobuf:"bytes,3,opt,name=arguments"`
// TemplateRef is the reference to the template resource to execute as the step.
TemplateRef *TemplateRef `json:"templateRef,omitempty" protobuf:"bytes,4,opt,name=templateRef"`
// WithItems expands a step into multiple parallel steps from the items in the list
WithItems []Item `json:"withItems,omitempty" protobuf:"bytes,5,rep,name=withItems"`
// WithParam expands a step into multiple parallel steps from the value in the parameter,
// which is expected to be a JSON list.
WithParam string `json:"withParam,omitempty" protobuf:"bytes,6,opt,name=withParam"`
// WithSequence expands a step into a numeric sequence
WithSequence *Sequence `json:"withSequence,omitempty" protobuf:"bytes,7,opt,name=withSequence"`
// When is an expression in which the step should conditionally execute
When string `json:"when,omitempty" protobuf:"bytes,8,opt,name=when"`
// ContinueOn makes argo to proceed with the following step even if this step fails.
// Errors and Failed states can be specified
ContinueOn *ContinueOn `json:"continueOn,omitempty" protobuf:"bytes,9,opt,name=continueOn"`
// OnExit is a template reference which is invoked at the end of the
// template, irrespective of the success, failure, or error of the
// primary template.
OnExit string `json:"onExit,omitempty" protobuf:"bytes,11,opt,name=onExit"`
}
var _ TemplateHolder = &WorkflowStep{}
func (step *WorkflowStep) GetTemplateName() string {
return step.Template
}
func (step *WorkflowStep) GetTemplateRef() *TemplateRef {
return step.TemplateRef
}
func (step *WorkflowStep) IsResolvable() bool {
return true
}
// Sequence expands a workflow step into numeric range
type Sequence struct {
// Count is number of elements in the sequence (default: 0). Not to be used with end
Count string `json:"count,omitempty" protobuf:"bytes,1,opt,name=count"`
// Number at which to start the sequence (default: 0)
Start string `json:"start,omitempty" protobuf:"bytes,2,opt,name=start"`
// Number at which to end the sequence (default: 0). Not to be used with Count
End string `json:"end,omitempty" protobuf:"bytes,3,opt,name=end"`
// Format is a printf format string to format the value in the sequence
Format string `json:"format,omitempty" protobuf:"bytes,4,opt,name=format"`
}
// DeepCopyInto is an custom deepcopy function to deal with our use of the interface{} type
func (i *Item) DeepCopyInto(out *Item) {
inBytes, err := json.Marshal(i)
if err != nil {
panic(err)
}
err = json.Unmarshal(inBytes, out)
if err != nil {
panic(err)
}
}
// OpenAPISchemaType is used by the kube-openapi generator when constructing
// the OpenAPI spec of this type.
// See: https://github.com/kubernetes/kube-openapi/tree/master/pkg/generators
func (i Item) OpenAPISchemaType() []string { return []string{"string"} }
// OpenAPISchemaFormat is used by the kube-openapi generator when constructing
// the OpenAPI spec of this type.
func (i Item) OpenAPISchemaFormat() string { return "item" }
// TemplateRef is a reference of template resource.
type TemplateRef struct {
// Name is the resource name of the template.
Name string `json:"name,omitempty" protobuf:"bytes,1,opt,name=name"`
// Template is the name of referred template in the resource.
Template string `json:"template,omitempty" protobuf:"bytes,2,opt,name=template"`
// RuntimeResolution skips validation at creation time.
// By enabling this option, you can create the referred workflow template before the actual runtime.
RuntimeResolution bool `json:"runtimeResolution,omitempty" protobuf:"varint,3,opt,name=runtimeResolution"`
}
type ArgumentsProvider interface {
GetParameterByName(name string) *Parameter
GetArtifactByName(name string) *Artifact
}
// Arguments to a template
type Arguments struct {
// Parameters is the list of parameters to pass to the template or workflow
// +patchStrategy=merge
// +patchMergeKey=name
Parameters []Parameter `json:"parameters,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,1,rep,name=parameters"`
// Artifacts is the list of artifacts to pass to the template or workflow
// +patchStrategy=merge
// +patchMergeKey=name
Artifacts Artifacts `json:"artifacts,omitempty" patchStrategy:"merge" patchMergeKey:"name" protobuf:"bytes,2,rep,name=artifacts"`
}
var _ ArgumentsProvider = &Arguments{}
type Nodes map[string]NodeStatus
func (n Nodes) FindByDisplayName(name string) *NodeStatus {
for _, i := range n {
if i.DisplayName == name {
return &i
}
}
return nil
}
// UserContainer is a container specified by a user.
type UserContainer struct {
apiv1.Container `json:",inline" protobuf:"bytes,1,opt,name=container"`
// MirrorVolumeMounts will mount the same volumes specified in the main container
// to the container (including artifacts), at the same mountPaths. This enables
// dind daemon to partially see the same filesystem as the main container in
// order to use features such as docker volume binding
MirrorVolumeMounts *bool `json:"mirrorVolumeMounts,omitempty" protobuf:"varint,2,opt,name=mirrorVolumeMounts"`
}
// WorkflowStatus contains overall status information about a workflow
type WorkflowStatus struct {
// Phase a simple, high-level summary of where the workflow is in its lifecycle.
Phase NodePhase `json:"phase,omitempty" protobuf:"bytes,1,opt,name=phase,casttype=NodePhase"`
// Time at which this workflow started
StartedAt metav1.Time `json:"startedAt,omitempty" protobuf:"bytes,2,opt,name=startedAt"`
// Time at which this workflow completed
FinishedAt metav1.Time `json:"finishedAt,omitempty" protobuf:"bytes,3,opt,name=finishedAt"`
// A human readable message indicating details about why the workflow is in this condition.
Message string `json:"message,omitempty" protobuf:"bytes,4,opt,name=message"`
// Compressed and base64 decoded Nodes map
CompressedNodes string `json:"compressedNodes,omitempty" protobuf:"bytes,5,opt,name=compressedNodes"`
// Nodes is a mapping between a node ID and the node's status.
Nodes Nodes `json:"nodes,omitempty" protobuf:"bytes,6,rep,name=nodes"`
// Whether on not node status has been offloaded to a database. If exists, then Nodes and CompressedNodes will be empty.
// This will actually be populated with a hash of the offloaded data.
OffloadNodeStatusVersion string `json:"offloadNodeStatusVersion,omitempty" protobuf:"bytes,10,rep,name=offloadNodeStatusVersion"`
// StoredTemplates is a mapping between a template ref and the node's status.
StoredTemplates map[string]Template `json:"storedTemplates,omitempty" protobuf:"bytes,9,rep,name=storedTemplates"`
// PersistentVolumeClaims tracks all PVCs that were created as part of the workflow.
// The contents of this list are drained at the end of the workflow.
PersistentVolumeClaims []apiv1.Volume `json:"persistentVolumeClaims,omitempty" protobuf:"bytes,7,rep,name=persistentVolumeClaims"`
// Outputs captures output values and artifact locations produced by the workflow via global outputs
Outputs *Outputs `json:"outputs,omitempty" protobuf:"bytes,8,opt,name=outputs"`
}
func (ws *WorkflowStatus) IsOffloadNodeStatus() bool {
return ws.OffloadNodeStatusVersion != ""
}
func (ws *WorkflowStatus) GetOffloadNodeStatusVersion() string {
return ws.OffloadNodeStatusVersion
}
func (wf *Workflow) GetOffloadNodeStatusVersion() string {
return wf.Status.GetOffloadNodeStatusVersion()
}
type RetryPolicy string
const (
RetryPolicyAlways RetryPolicy = "Always"
RetryPolicyOnFailure RetryPolicy = "OnFailure"
RetryPolicyOnError RetryPolicy = "OnError"
)
type Backoff struct {
Duration string `json:"duration,omitempty" protobuf:"varint,1,opt,name=duration"`
Factor int32 `json:"factor,omitempty" protobuf:"varint,2,opt,name=factor"`
MaxDuration string `json:"maxDuration,omitempty" protobuf:"varint,3,opt,name=maxDuration"`
}
// RetryStrategy provides controls on how to retry a workflow step
type RetryStrategy struct {
// Limit is the maximum number of attempts when retrying a container
Limit *int32 `json:"limit,omitempty" protobuf:"varint,1,opt,name=limit"`
// RetryPolicy is a policy of NodePhase statuses that will be retried
RetryPolicy RetryPolicy `json:"retryPolicy,omitempty" protobuf:"bytes,2,opt,name=retryPolicy,casttype=RetryPolicy"`
// Backoff is a backoff strategy
Backoff *Backoff `json:"backoff,omitempty" protobuf:"bytes,3,opt,name=backoff,casttype=Backoff"`
}
// NodeStatus contains status information about an individual node in the workflow
type NodeStatus struct {
// ID is a unique identifier of a node within the worklow
// It is implemented as a hash of the node name, which makes the ID deterministic
ID string `json:"id" protobuf:"bytes,1,opt,name=id"`
// Name is unique name in the node tree used to generate the node ID
Name string `json:"name" protobuf:"bytes,2,opt,name=name"`
// DisplayName is a human readable representation of the node. Unique within a template boundary
DisplayName string `json:"displayName" protobuf:"bytes,3,opt,name=displayName"`
// Type indicates type of node
Type NodeType `json:"type" protobuf:"bytes,4,opt,name=type,casttype=NodeType"`
// TemplateName is the template name which this node corresponds to.
// Not applicable to virtual nodes (e.g. Retry, StepGroup)
TemplateName string `json:"templateName,omitempty" protobuf:"bytes,5,opt,name=templateName"`
// TemplateRef is the reference to the template resource which this node corresponds to.
// Not applicable to virtual nodes (e.g. Retry, StepGroup)
TemplateRef *TemplateRef `json:"templateRef,omitempty" protobuf:"bytes,6,opt,name=templateRef"`
// StoredTemplateID is the ID of stored template.
// DEPRECATED: This value is not used anymore.
StoredTemplateID string `json:"storedTemplateID,omitempty" protobuf:"bytes,18,opt,name=storedTemplateID"`
// WorkflowTemplateName is the WorkflowTemplate resource name on which the resolved template of this node is retrieved.
// DEPRECATED: This value is not used anymore.
WorkflowTemplateName string `json:"workflowTemplateName,omitempty" protobuf:"bytes,19,opt,name=workflowTemplateName"`
// TemplateScope is the template scope in which the template of this node was retrieved.
TemplateScope string `json:"templateScope,omitempty" protobuf:"bytes,20,opt,name=templateScope"`
// Phase a simple, high-level summary of where the node is in its lifecycle.
// Can be used as a state machine.
Phase NodePhase `json:"phase,omitempty" protobuf:"bytes,7,opt,name=phase,casttype=NodePhase"`
// BoundaryID indicates the node ID of the associated template root node in which this node belongs to
BoundaryID string `json:"boundaryID,omitempty" protobuf:"bytes,8,opt,name=boundaryID"`
// A human readable message indicating details about why the node is in this condition.
Message string `json:"message,omitempty" protobuf:"bytes,9,opt,name=message"`
// Time at which this node started
StartedAt metav1.Time `json:"startedAt,omitempty" protobuf:"bytes,10,opt,name=startedAt"`
// Time at which this node completed
FinishedAt metav1.Time `json:"finishedAt,omitempty" protobuf:"bytes,11,opt,name=finishedAt"`
// PodIP captures the IP of the pod for daemoned steps
PodIP string `json:"podIP,omitempty" protobuf:"bytes,12,opt,name=podIP"`
// Daemoned tracks whether or not this node was daemoned and need to be terminated
Daemoned *bool `json:"daemoned,omitempty" protobuf:"varint,13,opt,name=daemoned"`
// Inputs captures input parameter values and artifact locations supplied to this template invocation
Inputs *Inputs `json:"inputs,omitempty" protobuf:"bytes,14,opt,name=inputs"`
// Outputs captures output parameter values and artifact locations produced by this template invocation
Outputs *Outputs `json:"outputs,omitempty" protobuf:"bytes,15,opt,name=outputs"`
// Children is a list of child node IDs
Children []string `json:"children,omitempty" protobuf:"bytes,16,rep,name=children"`
// OutboundNodes tracks the node IDs which are considered "outbound" nodes to a template invocation.
// For every invocation of a template, there are nodes which we considered as "outbound". Essentially,
// these are last nodes in the execution sequence to run, before the template is considered completed.
// These nodes are then connected as parents to a following step.
//
// In the case of single pod steps (i.e. container, script, resource templates), this list will be nil
// since the pod itself is already considered the "outbound" node.
// In the case of DAGs, outbound nodes are the "target" tasks (tasks with no children).
// In the case of steps, outbound nodes are all the containers involved in the last step group.
// NOTE: since templates are composable, the list of outbound nodes are carried upwards when
// a DAG/steps template invokes another DAG/steps template. In other words, the outbound nodes of
// a template, will be a superset of the outbound nodes of its last children.
OutboundNodes []string `json:"outboundNodes,omitempty" protobuf:"bytes,17,rep,name=outboundNodes"`
}
//func (n NodeStatus) String() string {
// return fmt.Sprintf("%s (%s)", n.Name, n.ID)
//}
func isCompletedPhase(phase NodePhase) bool {
return phase == NodeSucceeded ||
phase == NodeFailed ||
phase == NodeError ||
phase == NodeSkipped
}
// Completed returns whether or not the workflow has completed execution
func (ws *WorkflowStatus) Completed() bool {
return isCompletedPhase(ws.Phase)
}
// Successful return whether or not the workflow has succeeded
func (ws *WorkflowStatus) Successful() bool {
return ws.Phase == NodeSucceeded
}
// Failed return whether or not the workflow has failed
func (ws *WorkflowStatus) Failed() bool {
return ws.Phase == NodeFailed
}
// Remove returns whether or not the node has completed execution
func (n NodeStatus) Completed() bool {
return isCompletedPhase(n.Phase) || n.IsDaemoned() && n.Phase != NodePending
}
// IsDaemoned returns whether or not the node is deamoned
func (n NodeStatus) IsDaemoned() bool {
if n.Daemoned == nil || !*n.Daemoned {
return false
}
return true
}
// Successful returns whether or not this node completed successfully
func (n NodeStatus) Successful() bool {
return n.Phase == NodeSucceeded || n.Phase == NodeSkipped || n.IsDaemoned() && n.Phase != NodePending
}
// CanRetry returns whether the node should be retried or not.
func (n NodeStatus) CanRetry() bool {
// TODO(shri): Check if there are some 'unretryable' errors.
return n.Completed() && !n.Successful()
}
var _ TemplateHolder = &NodeStatus{}
func (n *NodeStatus) GetTemplateName() string {
return n.TemplateName
}
func (n *NodeStatus) GetTemplateRef() *TemplateRef {
return n.TemplateRef
}
func (n *NodeStatus) IsResolvable() bool {
return true
}
// S3Bucket contains the access information required for interfacing with an S3 bucket
type S3Bucket struct {
// Endpoint is the hostname of the bucket endpoint
Endpoint string `json:"endpoint" protobuf:"bytes,1,opt,name=endpoint"`
// Bucket is the name of the bucket
Bucket string `json:"bucket" protobuf:"bytes,2,opt,name=bucket"`
// Region contains the optional bucket region
Region string `json:"region,omitempty" protobuf:"bytes,3,opt,name=region"`
// Insecure will connect to the service with TLS
Insecure *bool `json:"insecure,omitempty" protobuf:"varint,4,opt,name=insecure"`
// AccessKeySecret is the secret selector to the bucket's access key
AccessKeySecret apiv1.SecretKeySelector `json:"accessKeySecret" protobuf:"bytes,5,opt,name=accessKeySecret"`
// SecretKeySecret is the secret selector to the bucket's secret key
SecretKeySecret apiv1.SecretKeySelector `json:"secretKeySecret" protobuf:"bytes,6,opt,name=secretKeySecret"`
// RoleARN is the Amazon Resource Name (ARN) of the role to assume.
RoleARN string `json:"roleARN,omitempty" protobuf:"bytes,7,opt,name=roleARN"`
}
// S3Artifact is the location of an S3 artifact