func (bs *BaseStack) destroyAsync(ctx context.Context, req *stack.ApplyRequest) error {
if rt, ok := stack.RequestTraceFromContext(ctx); ok {
defer rt.Send()
}
bs.Eventer.Push(&eventer.Event{
Message: "Fetching and validating credentials",
Percentage: 30,
Status: machinestate.Terminating,
})
credIDs := FlattenValues(bs.Builder.Stack.Credentials)
bs.Log.Debug("Fetching '%d' credentials from user '%s'", len(credIDs), bs.Req.Username)
if err := bs.Builder.BuildCredentials(bs.Req.Method, bs.Req.Username, req.GroupName, credIDs); err != nil {
return err
}
bs.Log.Debug("Fetched terraform data: koding=%+v, template=%+v", bs.Builder.Koding, bs.Builder.Template)
if bs.Builder.Stack.Stack.State() != stackstate.NotInitialized {
bs.Log.Debug("Connection to Terraformer")
tfKite, err := terraformer.Connect(bs.Session.Terraformer)
if err != nil {
return err
}
defer tfKite.Close()
tfReq := &tf.TerraformRequest{
ContentID: req.GroupName + "-" + req.StackID,
TraceID: bs.TraceID,
}
bs.Log.Debug("Calling terraform.destroy method with context: %+v", tfReq)
_, err = tfKite.Destroy(tfReq)
if err != nil {
return err
}
}
return bs.Builder.Database.Destroy()
}
// HandleApply builds and expands compute stack template for the given ID and
// sends an apply request to terraformer.
//
// When destroy=false, building and expanding the stack prior to
// terraformer request is done asynchronously, and the result of
// that operation is communicated back with eventer.
//
// When destroy=true, fetching machines from DB is done synchronously, as
// as soon as Apply method returns, allowed user list for each machine
// is zeroed, which could make the destroy oepration to fail - we
// first build machines and rest of the destroy is perfomed asynchronously.
func (bs *BaseStack) HandleApply(ctx context.Context) (interface{}, error) {
arg, ok := ctx.Value(stack.ApplyRequestKey).(*stack.ApplyRequest)
if !ok {
arg = &stack.ApplyRequest{}
if err := bs.Req.Args.One().Unmarshal(arg); err != nil {
return nil, err
}
}
if err := arg.Valid(); err != nil {
return nil, err
}
err := bs.Builder.BuildStack(arg.StackID, arg.Credentials)
if err != nil && !(arg.Destroy && models.IsNotFound(err, "jStackTemplate")) {
return nil, err
}
if state := bs.Builder.Stack.Stack.State(); state.InProgress() {
return nil, fmt.Errorf("State is currently %s. Please try again later", state)
}
if rt, ok := stack.RequestTraceFromContext(ctx); ok {
rt.Hijack()
}
bs.Arg = arg
if arg.Destroy {
err = bs.destroy(ctx, arg)
} else {
err = bs.apply(ctx, arg)
}
if err != nil {
return nil, err
}
return &stack.ControlResult{
EventId: bs.Eventer.ID(),
}, nil
}
func (bs *BaseStack) applyAsync(ctx context.Context, req *stack.ApplyRequest) error {
if rt, ok := stack.RequestTraceFromContext(ctx); ok {
defer rt.Send()
}
bs.Eventer.Push(&eventer.Event{
Message: "Fetching and validating machines",
Percentage: 20,
Status: machinestate.Building,
})
if err := bs.Builder.BuildMachines(ctx); err != nil {
return err
}
bs.Eventer.Push(&eventer.Event{
Message: "Fetching and validating credentials",
Percentage: 30,
Status: machinestate.Building,
})
credIDs := FlattenValues(bs.Builder.Stack.Credentials)
bs.Log.Debug("Fetching '%d' credentials from user '%s'", len(credIDs), bs.Req.Username)
if err := bs.Builder.BuildCredentials(bs.Req.Method, bs.Req.Username, req.GroupName, credIDs); err != nil {
return err
}
cred, err := bs.Builder.CredentialByProvider(bs.Provider.Name)
if err != nil {
return err
}
bs.Log.Debug("Fetched terraform data: koding=%+v, template=%+v", bs.Builder.Koding, bs.Builder.Template)
tfKite, err := terraformer.Connect(bs.Session.Terraformer)
if err != nil {
return err
}
defer tfKite.Close()
defaultContentID := req.GroupName + "-" + req.StackID
bs.Log.Debug("Building template: %s", defaultContentID)
if err := bs.Builder.BuildTemplate(bs.Builder.Stack.Template, defaultContentID); err != nil {
return err
}
if len(req.Variables) != 0 {
if err := bs.Builder.Template.InjectVariables("", req.Variables); err != nil {
return err
}
}
bs.Log.Debug("Stack template before injecting Koding data: %s", bs.Builder.Template)
t, err := bs.stack.ApplyTemplate(cred)
if err != nil {
return err
}
if t.Key == "" {
t.Key = defaultContentID
}
bs.Log.Debug("Stack template after injecting Koding data: %s", t)
bs.Builder.Stack.Template = t.Content
done := make(chan struct{})
// because apply can last long, we are going to increment the eventer's
// percentage as long as we build automatically.
go func() {
start := 45
ticker := time.NewTicker(time.Second * 5)
defer ticker.Stop()
for {
select {
case <-done:
return
case <-ticker.C:
if start < 70 {
start += 5
}
bs.Eventer.Push(&eventer.Event{
Message: "Building stack resources",
Percentage: start,
Status: machinestate.Building,
})
}
}
}()
tfReq := &tf.TerraformRequest{
Content: bs.Builder.Stack.Template,
ContentID: t.Key,
TraceID: bs.TraceID,
}
bs.Log.Debug("Final stack template. Calling terraform.apply method:")
bs.Log.Debug("%+v", tfReq)
state, err := tfKite.Apply(tfReq)
close(done)
if err != nil {
return err
}
bs.Eventer.Push(&eventer.Event{
Message: "Checking VM connections",
Percentage: 70,
Status: machinestate.Building,
})
if bs.Klients, err = bs.Planner.DialKlients(ctx, bs.KlientIDs); err != nil {
return err
}
bs.Eventer.Push(&eventer.Event{
Message: "Updating machine settings",
Percentage: 90,
Status: machinestate.Building,
})
err = bs.UpdateResources(state)
if e := bs.Builder.UpdateStack(); e != nil && err == nil {
err = e
}
return err
}