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controller.go
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controller.go
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package exit
import (
"context"
v1 "k8s.io/api/core/v1"
"github.com/windmilleng/tilt/internal/store"
"github.com/windmilleng/tilt/pkg/model"
)
// Controls normal process termination. Either Tilt completed all its work,
// or it determined that it was unable to complete the work it was assigned.
type Controller struct {
}
func NewController() *Controller {
return &Controller{}
}
func (c *Controller) shouldExit(store store.RStore) Action {
state := store.RLockState()
defer store.RUnlockState()
// Already processing the exit
if state.ExitSignal {
return Action{}
}
if state.EngineMode.IsApplyMode() || state.EngineMode.IsCIMode() {
// If the tiltfile failed, exit immediately.
err := state.TiltfileState.LastBuild().Error
if err != nil {
return Action{ExitSignal: true, ExitError: err}
}
// If any of the individual builds failed, exit immediately.
for _, mt := range state.ManifestTargets {
err := mt.State.LastBuild().Error
if err != nil {
return Action{ExitSignal: true, ExitError: err}
}
}
}
if state.EngineMode.IsApplyMode() {
// If all builds completed, we're done!
if len(state.ManifestTargets) > 0 && state.InitialBuildsCompleted() {
return Action{ExitSignal: true}
}
}
if state.EngineMode.IsCIMode() {
// Check the runtime state of all resources.
// If any of the resources are in error, exit.
allOK := true
for _, mt := range state.ManifestTargets {
rs := mt.State.RuntimeState
if rs == nil {
allOK = false
continue
}
status := rs.RuntimeStatus()
if status == model.RuntimeStatusError {
return Action{
ExitSignal: true,
ExitError: rs.RuntimeStatusError(),
}
}
if !c.isRuntimeDone(mt) {
allOK = false
}
}
// If all the resources are OK, we're done.
if len(state.ManifestTargets) > 0 &&
state.InitialBuildsCompleted() && allOK {
return Action{ExitSignal: true}
}
}
return Action{}
}
func (c *Controller) isRuntimeDone(mt *store.ManifestTarget) bool {
rs := mt.State.RuntimeState
if rs == nil {
return false
}
status := rs.RuntimeStatus()
statusOK := status == model.RuntimeStatusOK || status == model.RuntimeStatusNotApplicable
if !statusOK {
return false
}
// If this is a job, check to see if it has run to completion
//
// TODO(nick): This is...not great. Ideally, Tilt would track the status of
// every resource type it deploys, then we'd have some general-purpose system
// for expressing success criteria on different resource types (like
// https://www.openpolicyagent.org/). This is just a hack to make this work
// for jobs, until it makes sense to build out that type-independent
// infrastructure.
isK8s := mt.Manifest.IsK8s()
isK8sJob := isK8s && mt.Manifest.K8sTarget().HasJob()
if isK8sJob {
k8sState, ok := mt.State.RuntimeState.(store.K8sRuntimeState)
if !ok {
return false
}
pod := k8sState.MostRecentPod()
if pod.Phase != v1.PodSucceeded {
return false
}
}
return true
}
func (c *Controller) OnChange(ctx context.Context, store store.RStore) {
action := c.shouldExit(store)
if action.ExitSignal {
store.Dispatch(action)
}
}
var _ store.Subscriber = &Controller{}