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types.go
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types.go
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package api
import (
kapi "github.com/GoogleCloudPlatform/kubernetes/pkg/api"
)
// DeploymentStatus describes the possible states a deployment can be in.
type DeploymentStatus string
const (
// DeploymentStatusNew means the deployment has been accepted but not yet acted upon.
DeploymentStatusNew DeploymentStatus = "New"
// DeploymentStatusPending means the deployment been handed over to a deployment strategy,
// but the strategy has not yet declared the deployment to be running.
DeploymentStatusPending DeploymentStatus = "Pending"
// DeploymentStatusRunning means the deployment strategy has reported the deployment as
// being in-progress.
DeploymentStatusRunning DeploymentStatus = "Running"
// DeploymentStatusComplete means the deployment finished without an error.
DeploymentStatusComplete DeploymentStatus = "Complete"
// DeploymentStatusFailed means the deployment finished with an error.
DeploymentStatusFailed DeploymentStatus = "Failed"
)
// DeploymentStrategy describes how to perform a deployment.
type DeploymentStrategy struct {
// Type is the name of a deployment strategy.
Type DeploymentStrategyType
// CustomParams are the input to the Custom deployment strategy.
CustomParams *CustomDeploymentStrategyParams
// RecreateParams are the input to the Recreate deployment strategy.
RecreateParams *RecreateDeploymentStrategyParams
// RollingParams are the input to the Rolling deployment strategy.
RollingParams *RollingDeploymentStrategyParams
// Resources contains resource requirements to execute the deployment
Resources kapi.ResourceRequirements
}
// DeploymentStrategyType refers to a specific DeploymentStrategy implementation.
type DeploymentStrategyType string
const (
// DeploymentStrategyTypeRecreate is a simple strategy suitable as a default.
DeploymentStrategyTypeRecreate DeploymentStrategyType = "Recreate"
// DeploymentStrategyTypeCustom is a user defined strategy.
DeploymentStrategyTypeCustom DeploymentStrategyType = "Custom"
// DeploymentStrategyTypeRolling uses the Kubernetes RollingUpdater.
DeploymentStrategyTypeRolling DeploymentStrategyType = "Rolling"
)
// CustomDeploymentStrategyParams are the input to the Custom deployment strategy.
type CustomDeploymentStrategyParams struct {
// Image specifies a Docker image which can carry out a deployment.
Image string
// Environment holds the environment which will be given to the container for Image.
Environment []kapi.EnvVar
// Command is optional and overrides CMD in the container Image.
Command []string
}
// RecreateDeploymentStrategyParams are the input to the Recreate deployment
// strategy.
type RecreateDeploymentStrategyParams struct {
// Pre is a lifecycle hook which is executed before the strategy manipulates
// the deployment. All LifecycleHookFailurePolicy values are supported.
Pre *LifecycleHook
// Post is a lifecycle hook which is executed after the strategy has
// finished all deployment logic. The LifecycleHookFailurePolicyAbort policy
// is NOT supported.
Post *LifecycleHook
}
// LifecycleHook defines a specific deployment lifecycle action.
type LifecycleHook struct {
// FailurePolicy specifies what action to take if the hook fails.
FailurePolicy LifecycleHookFailurePolicy
// ExecNewPod specifies the options for a lifecycle hook backed by a pod.
ExecNewPod *ExecNewPodHook
}
// LifecycleHookFailurePolicy describes possibles actions to take if a hook fails.
type LifecycleHookFailurePolicy string
const (
// LifecycleHookFailurePolicyRetry means retry the hook until it succeeds.
LifecycleHookFailurePolicyRetry LifecycleHookFailurePolicy = "Retry"
// LifecycleHookFailurePolicyAbort means abort the deployment (if possible).
LifecycleHookFailurePolicyAbort LifecycleHookFailurePolicy = "Abort"
// LifecycleHookFailurePolicyIgnore means ignore failure and continue the deployment.
LifecycleHookFailurePolicyIgnore LifecycleHookFailurePolicy = "Ignore"
)
// ExecNewPodHook is a hook implementation which runs a command in a new pod
// based on the specified container which is assumed to be part of the
// deployment template.
type ExecNewPodHook struct {
// Command is the action command and its arguments.
Command []string
// Env is a set of environment variables to supply to the hook pod's container.
Env []kapi.EnvVar
// ContainerName is the name of a container in the deployment pod template
// whose Docker image will be used for the hook pod's container.
ContainerName string
}
// RollingDeploymentStrategyParams are the input to the Rolling deployment
// strategy.
type RollingDeploymentStrategyParams struct {
// UpdatePeriodSeconds is the time to wait between individual pod updates.
// If the value is nil, a default will be used.
UpdatePeriodSeconds *int64
// IntervalSeconds is the time to wait between polling deployment status
// after update. If the value is nil, a default will be used.
IntervalSeconds *int64
// TimeoutSeconds is the time to wait for updates before giving up. If the
// value is nil, a default will be used.
TimeoutSeconds *int64
// Pre is a lifecycle hook which is executed before the deployment process
// begins. All LifecycleHookFailurePolicy values are supported.
Pre *LifecycleHook
// Post is a lifecycle hook which is executed after the strategy has
// finished all deployment logic. The LifecycleHookFailurePolicyAbort policy
// is NOT supported.
Post *LifecycleHook
}
const (
// DefaultRollingTimeoutSeconds is the default TimeoutSeconds for RollingDeploymentStrategyParams.
DefaultRollingTimeoutSeconds int64 = 10 * 60
// DefaultRollingIntervalSeconds is the default IntervalSeconds for RollingDeploymentStrategyParams.
DefaultRollingIntervalSeconds int64 = 1
// DefaultRollingUpdatePeriodSeconds is the default PeriodSeconds for RollingDeploymentStrategyParams.
DefaultRollingUpdatePeriodSeconds int64 = 1
)
// These constants represent keys used for correlating objects related to deployments.
const (
// DeploymentConfigAnnotation is an annotation name used to correlate a deployment with the
// DeploymentConfig on which the deployment is based.
DeploymentConfigAnnotation = "openshift.io/deployment-config.name"
// DeploymentAnnotation is an annotation on a deployer Pod. The annotation value is the name
// of the deployment (a ReplicationController) on which the deployer Pod acts.
DeploymentAnnotation = "openshift.io/deployment.name"
// DeploymentPodAnnotation is an annotation on a deployment (a ReplicationController). The
// annotation value is the name of the deployer Pod which will act upon the ReplicationController
// to implement the deployment behavior.
DeploymentPodAnnotation = "openshift.io/deployer-pod.name"
// DeployerPodForDeploymentLabel is a label which groups pods related to a
// deployment. The value is a deployment name. The deployer pod and hook pods
// created by the internal strategies will have this label. Custom
// strategies can apply this label to any pods they create, enabling
// platform-provided cancellation and garbage collection support.
DeployerPodForDeploymentLabel = "openshift.io/deployer-pod-for.name"
// DeploymentStatusAnnotation is an annotation name used to retrieve the DeploymentPhase of
// a deployment.
DeploymentStatusAnnotation = "openshift.io/deployment.phase"
// DeploymentEncodedConfigAnnotation is an annotation name used to retrieve specific encoded
// DeploymentConfig on which a given deployment is based.
DeploymentEncodedConfigAnnotation = "openshift.io/encoded-deployment-config"
// DeploymentVersionAnnotation is an annotation on a deployment (a ReplicationController). The
// annotation value is the LatestVersion value of the DeploymentConfig which was the basis for
// the deployment.
DeploymentVersionAnnotation = "openshift.io/deployment-config.latest-version"
// DeploymentLabel is the name of a label used to correlate a deployment with the Pod created
// to execute the deployment logic.
// TODO: This is a workaround for upstream's lack of annotation support on PodTemplate. Once
// annotations are available on PodTemplate, audit this constant with the goal of removing it.
DeploymentLabel = "deployment"
// DeploymentConfigLabel is the name of a label used to correlate a deployment with the
// DeploymentConfigs on which the deployment is based.
DeploymentConfigLabel = "deploymentconfig"
// DesiredReplicasAnnotation represents the desired number of replicas for a
// new deployment.
// TODO: This should be made public upstream.
DesiredReplicasAnnotation = "kubectl.kubernetes.io/desired-replicas"
// DeploymentStatusReasonAnnotation represents the reason for deployment being in a given state
// Used for specifying the reason for cancellation or failure of a deployment
DeploymentStatusReasonAnnotation = "openshift.io/deployment.status-reason"
// DeploymentCancelledAnnotation indicates that the deployment has been cancelled
// The annotation value does not matter and its mere presence indicates cancellation
DeploymentCancelledAnnotation = "openshift.io/deployment.cancelled"
)
// These constants represent the various reasons for cancelling a deployment
// or for a deployment being placed in a failed state
const (
DeploymentCancelledByUser = "The deployment was cancelled by the user"
DeploymentCancelledNewerDeploymentExists = "The deployment was cancelled as a newer deployment was found running"
DeploymentFailedUnrelatedDeploymentExists = "The deployment failed as an unrelated pod with the same name as this deployment is already running"
DeploymentFailedDeployerPodNoLongerExists = "The deployment failed as the deployer pod no longer exists"
)
// MaxDeploymentDurationSeconds represents the maximum duration that a deployment is allowed to run
// This is set as the default value for ActiveDeadlineSeconds for the deployer pod
// Currently set to 6 hours
const MaxDeploymentDurationSeconds int64 = 21600
// DeploymentCancelledAnnotationValue represents the value for the DeploymentCancelledAnnotation
// annotation that signifies that the deployment should be cancelled
const DeploymentCancelledAnnotationValue = "true"
// DeploymentConfig represents a configuration for a single deployment (represented as a
// ReplicationController). It also contains details about changes which resulted in the current
// state of the DeploymentConfig. Each change to the DeploymentConfig which should result in
// a new deployment results in an increment of LatestVersion.
type DeploymentConfig struct {
kapi.TypeMeta
kapi.ObjectMeta
// Triggers determine how updates to a DeploymentConfig result in new deployments. If no triggers
// are defined, a new deployment can only occur as a result of an explicit client update to the
// DeploymentConfig with a new LatestVersion.
Triggers []DeploymentTriggerPolicy
// Template represents a desired deployment state and how to deploy it.
Template DeploymentTemplate
// LatestVersion is used to determine whether the current deployment associated with a DeploymentConfig
// is out of sync.
LatestVersion int
// Details are the reasons for the update to this deployment config.
// This could be based on a change made by the user or caused by an automatic trigger
Details *DeploymentDetails
}
// DeploymentTemplate contains all the necessary information to create a deployment from a
// DeploymentStrategy.
type DeploymentTemplate struct {
// Strategy describes how a deployment is executed.
Strategy DeploymentStrategy
// ControllerTemplate is the desired replication state the deployment works to materialize.
ControllerTemplate kapi.ReplicationControllerSpec
}
// DeploymentTriggerPolicy describes a policy for a single trigger that results in a new deployment.
type DeploymentTriggerPolicy struct {
// Type of the trigger
Type DeploymentTriggerType
// ImageChangeParams represents the parameters for the ImageChange trigger.
ImageChangeParams *DeploymentTriggerImageChangeParams
}
// DeploymentTriggerType refers to a specific DeploymentTriggerPolicy implementation.
type DeploymentTriggerType string
const (
// DeploymentTriggerManual is a placeholder implementation which does nothing.
DeploymentTriggerManual DeploymentTriggerType = "Manual"
// DeploymentTriggerOnImageChange will create new deployments in response to updated tags from
// a Docker image repository.
DeploymentTriggerOnImageChange DeploymentTriggerType = "ImageChange"
// DeploymentTriggerOnConfigChange will create new deployments in response to changes to
// the ControllerTemplate of a DeploymentConfig.
DeploymentTriggerOnConfigChange DeploymentTriggerType = "ConfigChange"
)
// DeploymentTriggerImageChangeParams represents the parameters to the ImageChange trigger.
type DeploymentTriggerImageChangeParams struct {
// Automatic means that the detection of a new tag value should result in a new deployment.
Automatic bool
// ContainerNames is used to restrict tag updates to the specified set of container names in a pod.
ContainerNames []string
// RepositoryName is the identifier for a Docker image repository to watch for changes.
// DEPRECATED: will be removed in v1beta3.
RepositoryName string
// From is a reference to a Docker image repository to watch for changes. This field takes
// precedence over RepositoryName, which is deprecated and will be removed in v1beta3. The
// Kind may be left blank, in which case it defaults to "ImageRepository". The "Name" is
// the only required subfield - if Namespace is blank, the namespace of the current deployment
// trigger will be used.
From kapi.ObjectReference
// Tag is the name of an image repository tag to watch for changes.
Tag string
// LastTriggeredImage is the last image to be triggered.
LastTriggeredImage string
}
// DeploymentDetails captures information about the causes of a deployment.
type DeploymentDetails struct {
// Message is the user specified change message, if this deployment was triggered manually by the user
Message string
// Causes are extended data associated with all the causes for creating a new deployment
Causes []*DeploymentCause
}
// DeploymentCause captures information about a particular cause of a deployment.
type DeploymentCause struct {
// Type is the type of the trigger that resulted in the creation of a new deployment
Type DeploymentTriggerType
// ImageTrigger contains the image trigger details, if this trigger was fired based on an image change
ImageTrigger *DeploymentCauseImageTrigger
}
// DeploymentCauseImageTrigger contains information about a deployment caused by an image trigger
type DeploymentCauseImageTrigger struct {
// RepositoryName is the identifier for a Docker image repository that was updated.
RepositoryName string
// Tag is the name of an image repository tag that is now pointing to a new image.
Tag string
}
// DeploymentConfigList is a collection of deployment configs.
type DeploymentConfigList struct {
kapi.TypeMeta
kapi.ListMeta
// Items is a list of deployment configs
Items []DeploymentConfig
}
// DeploymentConfigRollback provides the input to rollback generation.
type DeploymentConfigRollback struct {
kapi.TypeMeta
// Spec defines the options to rollback generation.
Spec DeploymentConfigRollbackSpec
}
// DeploymentConfigRollbackSpec represents the options for rollback generation.
type DeploymentConfigRollbackSpec struct {
// From points to a ReplicationController which is a deployment.
From kapi.ObjectReference
// IncludeTriggers specifies whether to include config Triggers.
IncludeTriggers bool
// IncludeTemplate specifies whether to include the PodTemplateSpec.
IncludeTemplate bool
// IncludeReplicationMeta specifies whether to include the replica count and selector.
IncludeReplicationMeta bool
// IncludeStrategy specifies whether to include the deployment Strategy.
IncludeStrategy bool
}