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batch

package
v0.1.0 Latest Latest
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 Go to latest Published: Oct 16, 2026 License: MIT Imports: 17 Imported by: 0

Documentation

Overview

Package batch emulates AWS Batch over REST-JSON: compute environments, job queues, scheduling policies, job definitions and jobs. With a container engine every job attempt runs as a container (array jobs, dependencies, retries and timeouts included) and logs to CloudWatch Logs; without one, jobs wait in RUNNABLE.

Index

Constants

View Source 
const NoDocker = "pogi: Docker is not available, so jobs cannot run"

NoDocker is the status reason of jobs that wait for a container engine.

Variables

This section is empty.

Functions

This section is empty.

Types

type Array 

type Array struct {
	Size    int            `json:"size,omitempty"`
	Index   *int           `json:"index,omitempty"`
	Summary map[string]int `json:"statusSummary,omitempty"`
}

Array is an array job's size and its children's statuses, or a child's index.

type Attempt 

type Attempt struct {
	Container *Container `json:"container"`
	Started   int64      `json:"startedAt,omitempty"`
	Stopped   int64      `json:"stoppedAt,omitempty"`
	Reason    string     `json:"statusReason,omitempty"`
}

Attempt is how one try of a job ended.

type Container 

type Container struct {
	Image         string   `json:"image,omitempty"`
	Command       []string `json:"command,omitempty"`
	Environment   []KV     `json:"environment,omitempty"`
	Vcpus         int      `json:"vcpus,omitempty"`
	Memory        int      `json:"memory,omitempty"`
	Resources     []Need   `json:"resourceRequirements,omitempty"`
	JobRole       string   `json:"jobRoleArn,omitempty"`
	ExecutionRole string   `json:"executionRoleArn,omitempty"`
	User          string   `json:"user,omitempty"`
	ExitCode      *int     `json:"exitCode,omitempty"`
	Reason        string   `json:"reason,omitempty"`
	LogStream     string   `json:"logStreamName,omitempty"`
}

Container is a job's container: its definition's container properties with the overrides applied, and how its last attempt ended.

type Def 

type Def struct {
	Name          string            `json:"jobDefinitionName"`
	Arn           string            `json:"jobDefinitionArn"`
	Revision      int               `json:"revision"`
	Status        string            `json:"status"`
	Type          string            `json:"type"`
	Parameters    map[string]string `json:"parameters,omitempty"`
	Retry         *Retry            `json:"retryStrategy,omitempty"`
	Timeout       *Timeout          `json:"timeout,omitempty"`
	Container     json.RawMessage   `json:"containerProperties,omitempty"`
	Node          json.RawMessage   `json:"nodeProperties,omitempty"`
	Eks           json.RawMessage   `json:"eksProperties,omitempty"`
	Ecs           json.RawMessage   `json:"ecsProperties,omitempty"`
	Platform      []string          `json:"platformCapabilities,omitempty"`
	PropagateTags bool              `json:"propagateTags,omitempty"`
	Priority      *int              `json:"schedulingPriority,omitempty"`
	Tags          map[string]string `json:"tags,omitempty"`
}

Def is one revision of a job definition; its container, node, EKS and ECS properties are kept as given.

type Dep 

type Dep struct {
	JobID string `json:"jobId,omitempty"`
	Type  string `json:"type,omitempty"`
}

Dep is a dependency: on a job, N_TO_N on an array job of the same size, or SEQUENTIAL among an array job's children.

type Env 

type Env struct {
	Name          string            `json:"computeEnvironmentName"`
	Arn           string            `json:"computeEnvironmentArn"`
	Type          string            `json:"type"`
	State         string            `json:"state"`
	Status        string            `json:"status"`
	StatusReason  string            `json:"statusReason,omitempty"`
	Unmanaged     *int              `json:"unmanagedvCpus,omitempty"`
	Resources     map[string]any    `json:"computeResources,omitempty"`
	ServiceRole   string            `json:"serviceRole,omitempty"`
	UpdatePolicy  map[string]any    `json:"updatePolicy,omitempty"`
	Eks           map[string]any    `json:"eksConfiguration,omitempty"`
	Context       string            `json:"context,omitempty"`
	Cluster       string            `json:"ecsClusterArn,omitempty"`
	Orchestration string            `json:"containerOrchestrationType"`
	UUID          string            `json:"uuid"`
	Tags          map[string]string `json:"tags,omitempty"`
}

Env is a compute environment; its compute resources are kept as given.

type Job 

type Job struct {
	ID            string            `json:"jobId"`
	Arn           string            `json:"jobArn"`
	Name          string            `json:"jobName"`
	Queue         string            `json:"jobQueue,omitempty"`
	Def           string            `json:"jobDefinition"`
	Status        string            `json:"status"`
	Reason        string            `json:"statusReason,omitempty"`
	Created       int64             `json:"createdAt"`
	Started       int64             `json:"startedAt,omitempty"`
	Stopped       int64             `json:"stoppedAt,omitempty"`
	Attempts      []Attempt         `json:"attempts,omitempty"`
	DependsOn     []Dep             `json:"dependsOn,omitempty"`
	Parameters    map[string]string `json:"parameters,omitempty"`
	Container     *Container        `json:"container,omitempty"`
	Array         *Array            `json:"arrayProperties,omitempty"`
	Retry         *Retry            `json:"retryStrategy,omitempty"`
	Timeout       *Timeout          `json:"timeout,omitempty"`
	Platform      []string          `json:"platformCapabilities,omitempty"`
	PropagateTags bool              `json:"propagateTags,omitempty"`
	Share         string            `json:"shareIdentifier,omitempty"`
	Priority      *int              `json:"schedulingPriority,omitempty"`
	Cancelled     bool              `json:"isCancelled,omitempty"`
	Terminated    bool              `json:"isTerminated,omitempty"`
	Tags          map[string]string `json:"tags,omitempty"`
	// contains filtered or unexported fields
}

Job is a job, an array job's parent or one of its children.

type KV 

type KV struct {
	Name  string `json:"name"`
	Value string `json:"value"`
}

KV is an environment variable.

type Need 

type Need struct {
	Type  string `json:"type"`
	Value string `json:"value"`
}

Need is a resource requirement: VCPU, MEMORY (MiB) or GPU.

type OnExit 

type OnExit struct {
	Action         string `json:"action"`
	OnExitCode     string `json:"onExitCode,omitempty"`
	OnReason       string `json:"onReason,omitempty"`
	OnStatusReason string `json:"onStatusReason,omitempty"`
}

OnExit decides whether a failed attempt is retried.

type Order 

type Order struct {
	Order int    `json:"order"`
	Env   string `json:"computeEnvironment"`
}

Order places a compute environment in a queue.

type Policy 

type Policy struct {
	Name      string            `json:"name"`
	Arn       string            `json:"arn"`
	Fairshare map[string]any    `json:"fairsharePolicy,omitempty"`
	Tags      map[string]string `json:"tags,omitempty"`
}

Policy is a scheduling policy, kept as given.

type Queue 

type Queue struct {
	Name         string            `json:"jobQueueName"`
	Arn          string            `json:"jobQueueArn"`
	State        string            `json:"state"`
	Status       string            `json:"status"`
	StatusReason string            `json:"statusReason,omitempty"`
	Priority     int               `json:"priority"`
	Order        []Order           `json:"computeEnvironmentOrder"`
	Policy       string            `json:"schedulingPolicyArn,omitempty"`
	TimeLimits   []any             `json:"jobStateTimeLimitActions,omitempty"`
	Tags         map[string]string `json:"tags,omitempty"`
}

Queue is a job queue.

type Retry 

type Retry struct {
	Attempts int      `json:"attempts,omitempty"`
	OnExit   []OnExit `json:"evaluateOnExit,omitempty"`
}

Retry is a retry strategy.

type Service 

type Service struct {
	// contains filtered or unexported fields
}

Service is the Batch emulator.

func New 

func New(hub *core.Hub) *Service

New creates the Batch service.

func (*Service) Close 

func (s *Service) Close() error

Close stops the scheduler and the attempts still running, removing their containers.

func (*Service) Info 

func (s *Service) Info() core.Info

func (*Service) Inspect 

func (s *Service) Inspect(table, id string) any

func (*Service) Load 

func (s *Service) Load(b []byte) error

Load restores state; attempts that were running have lost their containers and fail.

func (*Service) Reset 

func (s *Service) Reset()

func (*Service) Resources 

func (s *Service) Resources() []core.Table

func (*Service) Save 

func (s *Service) Save() ([]byte, error)

func (*Service) ServeHTTP 

func (s *Service) ServeHTTP(w http.ResponseWriter, r *http.Request)

func (*Service) Tick 

func (s *Service) Tick(now time.Time)

Tick moves environments and queues to VALID (or away, once deleted) and jobs along: SUBMITTED, PENDING until their dependencies succeed, RUNNABLE until a container can start. Running attempts end on their own.

type Timeout 

type Timeout struct {
	Seconds int `json:"attemptDurationSeconds,omitempty"`
}

Timeout limits each attempt.

Source Files

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