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state.go
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state.go
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package state
import (
"time"
"github.com/hashicorp/nomad/nomad/structs"
)
// State captures the state of the allocation runner.
type State struct {
// ClientStatus captures the overall state of the allocation
ClientStatus string
// ClientDescription is an optional human readable description of the
// allocations client state
ClientDescription string
// DeploymentStatus captures the status of the deployment
DeploymentStatus *structs.AllocDeploymentStatus
// TaskStates is a snapshot of task states.
TaskStates map[string]*structs.TaskState
}
// SetDeploymentStatus is a helper for updating the client-controlled
// DeploymentStatus fields: Healthy and Timestamp. The Canary and ModifyIndex
// fields should only be updated by the server.
func (s *State) SetDeploymentStatus(timestamp time.Time, healthy bool) {
if s.DeploymentStatus == nil {
s.DeploymentStatus = &structs.AllocDeploymentStatus{}
}
s.DeploymentStatus.Healthy = &healthy
s.DeploymentStatus.Timestamp = timestamp
}
// ClearDeploymentStatus is a helper to clear the client-controlled
// DeploymentStatus fields: Healthy and Timestamp. The Canary and ModifyIndex
// fields should only be updated by the server.
func (s *State) ClearDeploymentStatus() {
if s.DeploymentStatus == nil {
return
}
s.DeploymentStatus.Healthy = nil
s.DeploymentStatus.Timestamp = time.Time{}
}
// Copy returns a deep copy of State.
func (s *State) Copy() *State {
taskStates := make(map[string]*structs.TaskState, len(s.TaskStates))
for k, v := range s.TaskStates {
taskStates[k] = v.Copy()
}
return &State{
ClientStatus: s.ClientStatus,
ClientDescription: s.ClientDescription,
DeploymentStatus: s.DeploymentStatus.Copy(),
TaskStates: taskStates,
}
}
// ClientTerminalStatus returns if the client status is terminal and will no longer transition
func (a *State) ClientTerminalStatus() bool {
switch a.ClientStatus {
case structs.AllocClientStatusComplete, structs.AllocClientStatusFailed, structs.AllocClientStatusLost:
return true
default:
return false
}
}