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resources.go
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resources.go
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package executor
import (
"encoding/json"
"errors"
"time"
"github.com/cloudfoundry-incubator/bbs/models"
)
type State string
type DiskLimitScope uint8
const (
StateInvalid State = ""
StateReserved State = "reserved"
StateInitializing State = "initializing"
StateCreated State = "created"
StateRunning State = "running"
StateCompleted State = "completed"
)
const (
ExclusiveDiskLimit DiskLimitScope = iota
TotalDiskLimit DiskLimitScope = iota
)
type Container struct {
Guid string `json:"guid"`
Resource
RunInfo
Tags Tags
State State `json:"state"`
AllocatedAt int64 `json:"allocated_at"`
ExternalIP string `json:"external_ip"`
RunResult ContainerRunResult `json:"run_result"`
}
func NewContainerFromResource(guid string, resource *Resource, tags Tags) Container {
return Container{
Guid: guid,
Resource: *resource,
Tags: tags,
}
}
func NewReservedContainerFromAllocationRequest(req *AllocationRequest, allocatedAt int64) Container {
c := NewContainerFromResource(req.Guid, &req.Resource, req.Tags)
c.State = StateReserved
c.AllocatedAt = allocatedAt
return c
}
type Resource struct {
MemoryMB int `json:"memory_mb"`
DiskMB int `json:"disk_mb"`
RootFSPath string `json:"rootfs"`
}
func NewResource(memoryMB, diskMB int, rootFSPath string) Resource {
return Resource{
MemoryMB: memoryMB,
DiskMB: diskMB,
RootFSPath: rootFSPath,
}
}
type RunInfo struct {
CPUWeight uint `json:"cpu_weight"`
DiskScope DiskLimitScope `json:"disk_scope,omitempty"`
Ports []PortMapping `json:"ports"`
LogConfig LogConfig `json:"log_config"`
MetricsConfig MetricsConfig `json:"metrics_config"`
StartTimeout uint `json:"start_timeout"`
Privileged bool `json:"privileged"`
Setup *models.Action `json:"setup"`
Action *models.Action `json:"run"`
Monitor *models.Action `json:"monitor"`
EgressRules []*models.SecurityGroupRule `json:"egress_rules,omitempty"`
Env []EnvironmentVariable `json:"env,omitempty"`
}
func (newContainer Container) Copy() Container {
newContainer.Tags = newContainer.Tags.Copy()
return newContainer
}
func (c *Container) HasTags(tags Tags) bool {
if c.Tags == nil {
return tags == nil
}
if tags == nil {
return false
}
for key, val := range tags {
v, ok := c.Tags[key]
if !ok || val != v {
return false
}
}
return true
}
type InnerContainer Container
type mContainer struct {
SetupRaw *json.RawMessage `json:"setup"`
ActionRaw json.RawMessage `json:"run"`
MonitorRaw *json.RawMessage `json:"monitor"`
*InnerContainer
}
type EnvironmentVariable struct {
Name string `json:"name"`
Value string `json:"value"`
}
type ContainerMetrics struct {
MemoryUsageInBytes uint64 `json:"memory_usage_in_bytes"`
DiskUsageInBytes uint64 `json:"disk_usage_in_bytes"`
TimeSpentInCPU time.Duration `json:"time_spent_in_cpu"`
}
type MetricsConfig struct {
Guid string `json:"guid"`
Index int `json:"index"`
}
type Metrics struct {
MetricsConfig
ContainerMetrics
}
type LogConfig struct {
Guid string `json:"guid"`
Index int `json:"index"`
SourceName string `json:"source_name"`
}
type PortMapping struct {
ContainerPort uint16 `json:"container_port"`
HostPort uint16 `json:"host_port,omitempty"`
}
type ContainerRunResult struct {
Failed bool `json:"failed"`
FailureReason string `json:"failure_reason"`
Stopped bool `json:"stopped"`
}
type ExecutorResources struct {
MemoryMB int `json:"memory_mb"`
DiskMB int `json:"disk_mb"`
Containers int `json:"containers"`
}
func NewExecutorResources(memoryMB, diskMB, containers int) ExecutorResources {
return ExecutorResources{
MemoryMB: memoryMB,
DiskMB: diskMB,
Containers: containers,
}
}
func (r *ExecutorResources) canSubtract(res *Resource) bool {
return r.MemoryMB >= res.MemoryMB && r.DiskMB >= res.DiskMB && r.Containers > 0
}
func (r *ExecutorResources) Subtract(res *Resource) bool {
if !r.canSubtract(res) {
return false
}
r.MemoryMB -= res.MemoryMB
r.DiskMB -= res.DiskMB
r.Containers -= 1
return true
}
type Tags map[string]string
func (t Tags) Copy() Tags {
if t == nil {
return nil
}
newTags := make(Tags, len(t))
newTags.Add(t)
return newTags
}
func (t Tags) Add(other Tags) {
for key := range other {
t[key] = other[key]
}
}
type Event interface {
EventType() EventType
}
type EventType string
var ErrUnknownEventType = errors.New("unknown event type")
const (
EventTypeInvalid EventType = ""
EventTypeContainerComplete EventType = "container_complete"
EventTypeContainerRunning EventType = "container_running"
EventTypeContainerReserved EventType = "container_reserved"
)
type LifecycleEvent interface {
Container() Container
lifecycleEvent()
}
type ContainerCompleteEvent struct {
RawContainer Container `json:"container"`
}
func NewContainerCompleteEvent(container Container) ContainerCompleteEvent {
return ContainerCompleteEvent{
RawContainer: container,
}
}
func (ContainerCompleteEvent) EventType() EventType { return EventTypeContainerComplete }
func (e ContainerCompleteEvent) Container() Container { return e.RawContainer }
func (ContainerCompleteEvent) lifecycleEvent() {}
type ContainerRunningEvent struct {
RawContainer Container `json:"container"`
}
func NewContainerRunningEvent(container Container) ContainerRunningEvent {
return ContainerRunningEvent{
RawContainer: container,
}
}
func (ContainerRunningEvent) EventType() EventType { return EventTypeContainerRunning }
func (e ContainerRunningEvent) Container() Container { return e.RawContainer }
func (ContainerRunningEvent) lifecycleEvent() {}
type ContainerReservedEvent struct {
RawContainer Container `json:"container"`
}
func NewContainerReservedEvent(container Container) ContainerReservedEvent {
return ContainerReservedEvent{
RawContainer: container,
}
}
func (ContainerReservedEvent) EventType() EventType { return EventTypeContainerReserved }
func (e ContainerReservedEvent) Container() Container { return e.RawContainer }
func (ContainerReservedEvent) lifecycleEvent() {}