task

package
v1.32.0-coveo.0 Latest Latest
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 Go to latest Published: Oct 21, 2019 License: Apache-2.0 Imports: 41 Imported by: 0

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Constants

View Source 
const (
	// NetworkPauseContainerName is the internal name for the pause container
	NetworkPauseContainerName = "~internal~ecs~pause"

	// NamespacePauseContainerName is the internal name for the IPC resource namespace and/or
	// PID namespace sharing pause container
	NamespacePauseContainerName = "~internal~ecs~pause~namespace"

	NvidiaVisibleDevicesEnvVar = "NVIDIA_VISIBLE_DEVICES"
	GPUAssociationType         = "gpu"

	ContainerOrderingCreateCondition = "CREATE"
	ContainerOrderingStartCondition  = "START"

	// specifies bridge type mode for a task
	BridgeNetworkMode = "bridge"

	// specifies awsvpc type mode for a task
	AWSVPCNetworkMode = "awsvpc"
)
View Source 
const (
	HostVolumeType   = "host"
	DockerVolumeType = "docker"
)

Variables

This section is empty.

Functions

This section is empty.

Types

type Association 

type Association struct {
	// Containers are the container names that can use this association.
	Containers []string `json:"containers"`
	// Content describes this association.
	Content EncodedString `json:"content"`
	// Name is a unique identifier of the association within a task.
	Name string `json:"name"`
	// Type specifies the type of this association.
	Type string `json:"type"`
}

Association is a definition of a device (or other potential things) that is associated with a task.

type EncodedString 

type EncodedString struct {
	// Encoding is the encoding type of the value.
	Encoding string `json:"encoding"`
	// Value is the content of the encoded string.
	Value string `json:"value"`
}

EncodedString is used to describe an association, the consumer of the association data should be responsible to decode it. We don't model it in Agent, or check the value of the encoded string, we just pass whatever we get from ACS, because we don't want Agent to be coupled with a specific association.

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
	// Associations are the available associations for the task.
	Associations []Association `json:"associations"`
	// 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"`

	// ENIs is the list of Elastic Network Interfaces assigned to this task. The
	// TaskENIs type is helpful when decoding state files which might have stored
	// ENIs as a single ENI object instead of a list.
	ENIs TaskENIs `json:"ENI"`

	// AppMesh is the service mesh specified by the task
	AppMesh *apiappmesh.AppMesh

	// 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"`

	// PIDMode is used to determine how PID namespaces are organized between
	// containers of the Task
	PIDMode string `json:"PidMode,omitempty"`

	// IPCMode is used to determine how IPC resources should be shared among
	// containers of the Task
	IPCMode string `json:"IpcMode,omitempty"`

	// NvidiaRuntime is the runtime to pass Nvidia GPU devices to containers
	NvidiaRuntime string `json:"NvidiaRuntime,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) AddFirelensContainerBindMounts 

func (task *Task) AddFirelensContainerBindMounts(firelensConfig *apicontainer.FirelensConfig, hostConfig *dockercontainer.HostConfig,
	config *config.Config) *apierrors.HostConfigError

AddFirelensContainerBindMounts adds config file bind mount and socket directory bind mount to the firelens container's host config.

func (*Task) AddResource 

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

AddResource adds a resource to ResourcesMap

func (*Task) AddTaskENI 

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

AddTaskENI adds ENI information to the task.

func (*Task) ApplyExecutionRoleLogsAuth 

func (task *Task) ApplyExecutionRoleLogsAuth(hostConfig *dockercontainer.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) AssociationByTypeAndName 

func (task *Task) AssociationByTypeAndName(associationType, associationName string) (*Association, bool)

AssociationByTypeAndName gets an association of a certain type and name

func (*Task) AssociationsByTypeAndContainer 

func (task *Task) AssociationsByTypeAndContainer(associationType, containerName string) []string

AssociationByTypeAndContainer gets a list of names of all the associations associated with a container and of a certain type

func (*Task) BuildCNIConfig 

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

BuildCNIConfig builds a list of CNI network configurations for the task. If includeIPAMConfig is set to true, the list also includes the bridge IPAM configuration.

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(cGroupCPUPeriod time.Duration) (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) (*dockercontainer.Config, *apierrors.DockerClientConfigError)

DockerConfig converts the given container in this task to the format of the Docker SDK 'Config' struct

func (*Task) DockerHostConfig 

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

DockerHostConfig construct the configuration recognized by docker

func (*Task) GetAppMesh 

func (task *Task) GetAppMesh() *apiappmesh.AppMesh

GetAppMesh returns the app mesh config of the task

func (*Task) GetContainerIndex 

func (task *Task) GetContainerIndex(containerName string) int

GetContainerIndex returns the index of the container in the container list. This doesn't count internal container.

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) GetFirelensContainer 

func (task *Task) GetFirelensContainer() *apicontainer.Container

GetFirelensContainer returns the firelens container in the task, if there is one.

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) GetPrimaryENI 

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

GetPrimaryENI returns the primary ENI of the task. Since ACS can potentially send multiple ENIs to the agent, the first ENI in the list is considered as the primary ENI.

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) GetTaskENIs 

func (task *Task) GetTaskENIs() []*apieni.ENI

GetTaskENIs returns the list of ENIs for the task.

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) IsNetworkModeAWSVPC 

func (task *Task) IsNetworkModeAWSVPC() bool

IsNetworkModeAWSVPC checks if the task is configured to use the AWSVPC task networking feature.

func (*Task) PopulateASMAuthData 

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

PopulateASMAuthData sets docker auth credentials for a container

func (*Task) PopulateSecretLogOptionsToFirelensContainer 

func (task *Task) PopulateSecretLogOptionsToFirelensContainer(firelensContainer *apicontainer.Container) *apierrors.DockerClientConfigError

PopulateSecretLogOptionsToFirelensContainer collects secret log option values for awsfirelens log driver from task resource and specified then as envs of firelens container. Firelens container will use the envs to resolve config file variables constructed for secret log options when loading the config file.

func (*Task) PopulateSecrets 

func (task *Task) PopulateSecrets(hostConfig *dockercontainer.HostConfig, container *apicontainer.Container) *apierrors.DockerClientConfigError

PopulateSecrets appends secrets to container's env var map and hostconfig section

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) SetAppMesh 

func (task *Task) SetAppMesh(appMesh *apiappmesh.AppMesh)

SetAppMesh sets the app mesh config of the task

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) 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 []types.MountPoint)

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 TaskENIs 

type TaskENIs []*apieni.ENI

TaskENIs type enumerates the list of ENI objects as a type. It is used for implementing a custom unmarshaler. The unmarshaler is capable of unmarshaling both a list of ENI objects into the TaskENIs type (the new scheme) or a single ENI object into the TaskENIs type (the old scheme before this object was introduced).

The 'task' package is deemed to be a better home for this than the 'eni' package since this is only required for unmarshaling 'Task' object. None of the functionality/types in the 'eni' package themselves have any dependencies on this type.

func (*TaskENIs) UnmarshalJSON 

func (taskENIs *TaskENIs) UnmarshalJSON(b []byte) error

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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