task

package
v1.21.0 Latest Latest
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 Go to latest Published: Oct 11, 2018 License: Apache-2.0 Imports: 34 Imported by: 67

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Constants

View Source 
const (
	HostVolumeType   = "host"
	DockerVolumeType = "docker"
)
View Source 
const (
	// PauseContainerName is the internal name for the pause container
	PauseContainerName = "~internal~ecs~pause"
)

Variables

This section is empty.

Functions

This section is empty.

Types

type PlatformFields 

type PlatformFields struct{}

PlatformFields consists of fields specific to Linux for a task

type Task 

type Task struct {
	// Arn is the unique identifier for the task
	Arn string
	// Overrides are the overrides applied to a task
	Overrides TaskOverrides `json:"-"`
	// Family is the name of the task definition family
	Family string
	// Version is the version of the task definition
	Version string
	// Containers are the containers for the task
	Containers []*apicontainer.Container
	// ResourcesMapUnsafe is the map of resource type to corresponding resources
	ResourcesMapUnsafe resourcetype.ResourcesMap `json:"resources"`
	// Volumes are the volumes for the task
	Volumes []TaskVolume `json:"volumes"`
	// CPU is a task-level limit for compute resources. A value of 1 means that
	// the task may access 100% of 1 vCPU on the instance
	CPU float64 `json:"Cpu,omitempty"`
	// Memory is a task-level limit for memory resources in bytes
	Memory int64 `json:"Memory,omitempty"`
	// DesiredStatusUnsafe represents the state where the task should go. Generally,
	// the desired status is informed by the ECS backend as a result of either
	// API calls made to ECS or decisions made by the ECS service scheduler.
	// The DesiredStatusUnsafe is almost always either apitaskstatus.TaskRunning or apitaskstatus.TaskStopped.
	// NOTE: Do not access DesiredStatusUnsafe directly.  Instead, use `UpdateStatus`,
	// `UpdateDesiredStatus`, `SetDesiredStatus`, and `SetDesiredStatus`.
	// TODO DesiredStatusUnsafe should probably be private with appropriately written
	// setter/getter.  When this is done, we need to ensure that the UnmarshalJSON
	// is handled properly so that the state storage continues to work.
	DesiredStatusUnsafe apitaskstatus.TaskStatus `json:"DesiredStatus"`

	// KnownStatusUnsafe represents the state where the task is.  This is generally
	// the minimum of equivalent status types for the containers in the task;
	// if one container is at ContainerRunning and another is at ContainerPulled,
	// the task KnownStatusUnsafe would be TaskPulled.
	// NOTE: Do not access KnownStatusUnsafe directly.  Instead, use `UpdateStatus`,
	// and `GetKnownStatus`.
	// TODO KnownStatusUnsafe should probably be private with appropriately written
	// setter/getter.  When this is done, we need to ensure that the UnmarshalJSON
	// is handled properly so that the state storage continues to work.
	KnownStatusUnsafe apitaskstatus.TaskStatus `json:"KnownStatus"`
	// KnownStatusTimeUnsafe captures the time when the KnownStatusUnsafe was last updated.
	// NOTE: Do not access KnownStatusTime directly, instead use `GetKnownStatusTime`.
	KnownStatusTimeUnsafe time.Time `json:"KnownTime"`

	// PullStartedAtUnsafe is the timestamp when the task start pulling the first container,
	// it won't be set if the pull never happens
	PullStartedAtUnsafe time.Time `json:"PullStartedAt"`
	// PullStoppedAtUnsafe is the timestamp when the task finished pulling the last container,
	// it won't be set if the pull never happens
	PullStoppedAtUnsafe time.Time `json:"PullStoppedAt"`
	// ExecutionStoppedAtUnsafe is the timestamp when the task desired status moved to stopped,
	// which is when the any of the essential containers stopped
	ExecutionStoppedAtUnsafe time.Time `json:"ExecutionStoppedAt"`

	// SentStatusUnsafe represents the last KnownStatusUnsafe that was sent to the ECS SubmitTaskStateChange API.
	// TODO(samuelkarp) SentStatusUnsafe needs a lock and setters/getters.
	// TODO SentStatusUnsafe should probably be private with appropriately written
	// setter/getter.  When this is done, we need to ensure that the UnmarshalJSON
	// is handled properly so that the state storage continues to work.
	SentStatusUnsafe apitaskstatus.TaskStatus `json:"SentStatus"`

	StartSequenceNumber int64
	StopSequenceNumber  int64

	// ExecutionCredentialsID is the ID of credentials that are used by agent to
	// perform some action at the task level, such as pulling image from ECR
	ExecutionCredentialsID string `json:"executionCredentialsID"`

	// ENI is the elastic network interface specified by this task
	ENI *apieni.ENI

	// MemoryCPULimitsEnabled to determine if task supports CPU, memory limits
	MemoryCPULimitsEnabled bool `json:"MemoryCPULimitsEnabled,omitempty"`

	// PlatformFields consists of fields specific to linux/windows for a task
	PlatformFields PlatformFields `json:"PlatformFields,omitempty"`
	// contains filtered or unexported fields
}

Task is the internal representation of a task in the ECS agent

func RemoveFromTaskArray 

func RemoveFromTaskArray(arr []*Task, ndx int) []*Task

RemoveFromTaskArray removes the element at ndx from an array of task pointers, arr. If the ndx is out of bounds, it returns arr unchanged.

func TaskFromACS 

func TaskFromACS(acsTask *ecsacs.Task, envelope *ecsacs.PayloadMessage) (*Task, error)

TaskFromACS translates ecsacs.Task to apitask.Task by first marshaling the received ecsacs.Task to json and unmarshaling it as apitask.Task

func (*Task) AddResource 

func (task *Task) AddResource(resourceType string, resource taskresource.TaskResource)

AddResource adds a resource to ResourcesMap

func (*Task) ApplyExecutionRoleLogsAuth 

func (task *Task) ApplyExecutionRoleLogsAuth(hostConfig *docker.HostConfig, credentialsManager credentials.Manager) *apierrors.HostConfigError

ApplyExecutionRoleLogsAuth will check whether the task has execution role credentials, and add the genereated credentials endpoint to the associated HostConfig

func (*Task) BuildCNIConfig 

func (task *Task) BuildCNIConfig() (*ecscni.Config, error)

BuildCNIConfig constructs the cni configuration from eni

func (*Task) BuildCgroupRoot 

func (task *Task) BuildCgroupRoot() (string, error)

BuildCgroupRoot helps build the task cgroup prefix Example: /ecs/task-id

func (*Task) BuildLinuxResourceSpec 

func (task *Task) BuildLinuxResourceSpec() (specs.LinuxResources, error)

BuildLinuxResourceSpec returns a linuxResources object for the task cgroup

func (*Task) ContainerByName 

func (task *Task) ContainerByName(name string) (*apicontainer.Container, bool)

ContainerByName returns the *Container for the given name

func (*Task) DockerConfig 

func (task *Task) DockerConfig(container *apicontainer.Container, apiVersion dockerclient.DockerVersion) (*docker.Config, *apierrors.DockerClientConfigError)

DockerConfig converts the given container in this task to the format of GoDockerClient's 'Config' struct

func (*Task) DockerHostConfig 

func (task *Task) DockerHostConfig(container *apicontainer.Container, dockerContainerMap map[string]*apicontainer.DockerContainer, apiVersion dockerclient.DockerVersion) (*docker.HostConfig, *apierrors.HostConfigError)

DockerHostConfig construct the configuration recognized by docker

func (*Task) GetCredentialsID 

func (task *Task) GetCredentialsID() string

GetCredentialsID gets the credentials ID for the task

func (*Task) GetDesiredStatus 

func (task *Task) GetDesiredStatus() apitaskstatus.TaskStatus

GetDesiredStatus gets the desired status of the task

func (*Task) GetExecutionCredentialsID 

func (task *Task) GetExecutionCredentialsID() string

GetExecutionCredentialsID gets the credentials ID for the task

func (*Task) GetExecutionStoppedAt 

func (task *Task) GetExecutionStoppedAt() time.Time

GetExecutionStoppedAt returns the task executionStoppedAt timestamp

func (*Task) GetID 

func (task *Task) GetID() (string, error)

GetID is used to retrieve the taskID from taskARN Reference: http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#arn-syntax-ecs

func (*Task) GetKnownStatus 

func (task *Task) GetKnownStatus() apitaskstatus.TaskStatus

GetKnownStatus gets the KnownStatus of the task

func (*Task) GetKnownStatusTime 

func (task *Task) GetKnownStatusTime() time.Time

GetKnownStatusTime gets the KnownStatusTime of the task

func (*Task) GetPullStartedAt 

func (task *Task) GetPullStartedAt() time.Time

GetPullStartedAt returns the PullStartedAt timestamp

func (*Task) GetPullStoppedAt 

func (task *Task) GetPullStoppedAt() time.Time

GetPullStoppedAt returns the PullStoppedAt timestamp

func (*Task) GetResources 

func (task *Task) GetResources() []taskresource.TaskResource

GetResources returns the list of task resources from ResourcesMap

func (*Task) GetSentStatus 

func (task *Task) GetSentStatus() apitaskstatus.TaskStatus

GetSentStatus safely returns the SentStatus of the task

func (*Task) GetStopSequenceNumber 

func (task *Task) GetStopSequenceNumber() int64

GetStopSequenceNumber returns the stop sequence number of a task

func (*Task) GetTaskENI 

func (task *Task) GetTaskENI() *apieni.ENI

GetTaskENI returns the eni of task, for now task can only have one enis

func (*Task) GetTerminalReason 

func (task *Task) GetTerminalReason() string

GetTerminalReason retrieves the terminalReason string

func (*Task) HostVolumeByName 

func (task *Task) HostVolumeByName(name string) (taskresourcevolume.Volume, bool)

HostVolumeByName returns the task Volume for the given a volume name in that task. The second return value indicates the presence of that volume

func (*Task) InitializeResources 

func (task *Task) InitializeResources(resourceFields *taskresource.ResourceFields)

InitializeResources initializes the required field in the task on agent restart Some of the fields in task isn't saved in the agent state file, agent needs to initialize these fields before processing the task, eg: docker client in resource

func (*Task) PopulateASMAuthData 

func (task *Task) PopulateASMAuthData(container *apicontainer.Container) error

PopulateASMAuthData sets docker auth credentials for a container

func (*Task) PostUnmarshalTask 

func (task *Task) PostUnmarshalTask(cfg *config.Config,
	credentialsManager credentials.Manager, resourceFields *taskresource.ResourceFields,
	dockerClient dockerapi.DockerClient, ctx context.Context) error

PostUnmarshalTask is run after a task has been unmarshalled, but before it has been run. It is possible it will be subsequently called after that and should be able to handle such an occurrence appropriately (e.g. behave idempotently).

func (*Task) RecordExecutionStoppedAt 

func (task *Task) RecordExecutionStoppedAt(container *apicontainer.Container)

RecordExecutionStoppedAt checks if this is an essential container stopped and set the task executionStoppedAt timestamps

func (*Task) SetConfigHostconfigBasedOnVersion 

func (task *Task) SetConfigHostconfigBasedOnVersion(container *apicontainer.Container, config *docker.Config, hc *docker.HostConfig, apiVersion dockerclient.DockerVersion) error

SetConfigHostconfigBasedOnVersion sets the fields in both Config and HostConfig based on api version for backward compatibility

func (*Task) SetCredentialsID 

func (task *Task) SetCredentialsID(id string)

SetCredentialsID sets the credentials ID for the task

func (*Task) SetDesiredStatus 

func (task *Task) SetDesiredStatus(status apitaskstatus.TaskStatus)

SetDesiredStatus sets the desired status of the task

func (*Task) SetExecutionRoleCredentialsID 

func (task *Task) SetExecutionRoleCredentialsID(id string)

SetExecutionRoleCredentialsID sets the ID for the task execution role credentials

func (*Task) SetExecutionStoppedAt 

func (task *Task) SetExecutionStoppedAt(timestamp time.Time) bool

SetExecutionStoppedAt sets the ExecutionStoppedAt timestamp of the task

func (*Task) SetKnownStatus 

func (task *Task) SetKnownStatus(status apitaskstatus.TaskStatus)

SetKnownStatus sets the known status of the task

func (*Task) SetPullStartedAt 

func (task *Task) SetPullStartedAt(timestamp time.Time) bool

SetPullStartedAt sets the task pullstartedat timestamp and returns whether this field was updated or not

func (*Task) SetPullStoppedAt 

func (task *Task) SetPullStoppedAt(timestamp time.Time)

SetPullStoppedAt sets the task pullstoppedat timestamp

func (*Task) SetSentStatus 

func (task *Task) SetSentStatus(status apitaskstatus.TaskStatus)

SetSentStatus safely sets the SentStatus of the task

func (*Task) SetStopSequenceNumber 

func (task *Task) SetStopSequenceNumber(seqnum int64)

SetStopSequenceNumber sets the stop seqence number of a task

func (*Task) SetTaskENI 

func (task *Task) SetTaskENI(eni *apieni.ENI)

SetTaskENI sets the eni information of the task

func (*Task) SetTerminalReason 

func (task *Task) SetTerminalReason(reason string)

SetTerminalReason sets the terminalReason string and this can only be set once per the task's lifecycle. This field does not accept updates.

func (*Task) String 

func (task *Task) String() string

String returns a human readable string representation of this object

func (*Task) UpdateDesiredStatus 

func (task *Task) UpdateDesiredStatus()

UpdateDesiredStatus sets the known status of the task

func (*Task) UpdateMountPoints 

func (task *Task) UpdateMountPoints(cont *apicontainer.Container, vols []docker.Mount)

UpdateMountPoints updates the mount points of volumes that were created without specifying a host path. This is used as part of the empty host volume feature.

func (*Task) UpdateStatus 

func (task *Task) UpdateStatus() bool

UpdateStatus updates a task's known and desired statuses to be compatible with all of its containers It will return a bool indicating if there was a change

type TaskOverrides 

type TaskOverrides struct{}

TaskOverrides are the overrides applied to a task

type TaskVolume 

type TaskVolume struct {
	Type   string `json:"type"`
	Name   string `json:"name"`
	Volume taskresourcevolume.Volume
}

TaskVolume is a definition of all the volumes available for containers to reference within a task. It must be named.

func (*TaskVolume) MarshalJSON 

func (tv *TaskVolume) MarshalJSON() ([]byte, error)

MarshalJSON overrides the logic for JSON-encoding a TaskVolume object

func (*TaskVolume) UnmarshalJSON 

func (tv *TaskVolume) UnmarshalJSON(b []byte) error

UnmarshalJSON for TaskVolume determines the name and volume type, and unmarshals it into the appropriate HostVolume fulfilling interfaces

Notes

Bugs

  • On Windows, volumes with names that differ only by case will collide

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