/
delete_node_pool_workflow.go
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/
delete_node_pool_workflow.go
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// Copyright © 2020 Banzai Cloud
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package workflow
import (
"time"
"go.uber.org/cadence"
"go.uber.org/cadence/workflow"
"github.com/banzaicloud/pipeline/internal/cluster"
"github.com/banzaicloud/pipeline/internal/cluster/clusterworkflow"
"github.com/banzaicloud/pipeline/internal/cluster/infrastructure/aws/awsworkflow"
pkgCadence "github.com/banzaicloud/pipeline/pkg/cadence"
"github.com/banzaicloud/pipeline/pkg/cadence/worker"
)
// DeleteNodePoolWorkflowName is the name of the EKS node pool deletion
// workflow.
const DeleteNodePoolWorkflowName = "eks-delete-node-pool"
// DeleteNodePoolWorkflow defines a Cadence workflow encapsulating high level
// input-independent components required to delete an EKS node pool.
type DeleteNodePoolWorkflow struct{}
// DeleteNodePoolWorkflowInput defines the input parameters of an EKS node pool
// deletion.
type DeleteNodePoolWorkflowInput struct {
ClusterID uint
ClusterName string
NodePoolName string
OrganizationID uint
Region string
SecretID string
// Note: ClusterAPI.DeleteCluster, ClusterAPI.UpdateCluster node pool
// deletions should not change the cluster status (DELETING/UPDATING),
// because success could not yet mean RUNNING status and errors should be
// handled by the higher level workflow, but NodePoolAPI.DeleteNodePool node
// pool deletions should update the cluster status.
ShouldUpdateClusterStatus bool
}
// NewDeleteNodePoolWorkflow instantiates an EKS node pool deletion workflow.
func NewDeleteNodePoolWorkflow() *DeleteNodePoolWorkflow {
return &DeleteNodePoolWorkflow{}
}
// Execute runs the workflow.
func (w DeleteNodePoolWorkflow) Execute(ctx workflow.Context, input DeleteNodePoolWorkflowInput) (err error) {
ao := workflow.ActivityOptions{
ScheduleToStartTimeout: 5 * time.Minute,
StartToCloseTimeout: 10 * time.Minute,
WaitForCancellation: true,
RetryPolicy: &cadence.RetryPolicy{
InitialInterval: 15 * time.Second,
BackoffCoefficient: 1.0,
MaximumAttempts: 30,
NonRetriableErrorReasons: []string{pkgCadence.ClientErrorReason, "cadenceInternal:Panic"},
},
}
_ctx := ctx
ctx = workflow.WithActivityOptions(ctx, ao)
if input.ShouldUpdateClusterStatus {
defer func() {
if err == nil {
return
}
_ = SetClusterStatus(_ctx, input.ClusterID, cluster.Warning, pkgCadence.UnwrapError(err).Error())
}()
}
var nodePoolStackID string
{
activityInput := ListStoredNodePoolsActivityInput{
ClusterID: input.ClusterID,
ClusterName: input.ClusterName,
OptionalListedNodePoolNames: []string{input.NodePoolName},
OrganizationID: input.OrganizationID,
}
var activityOutput *ListStoredNodePoolsActivityOutput
err := workflow.ExecuteActivity(ctx, ListStoredNodePoolsActivityName, activityInput).Get(ctx, &activityOutput)
if err != nil {
return err
}
nodePoolStackID = activityOutput.NodePools[input.NodePoolName].StackID
}
{
activityInput := awsworkflow.DeleteStackActivityInput{
AWSCommonActivityInput: awsworkflow.AWSCommonActivityInput{
OrganizationID: input.OrganizationID,
SecretID: input.SecretID,
Region: input.Region,
ClusterName: input.ClusterName,
},
StackID: nodePoolStackID,
StackName: GenerateNodePoolStackName(input.ClusterName, input.NodePoolName),
}
err := workflow.ExecuteActivity(ctx, awsworkflow.DeleteStackActivityName, activityInput).Get(ctx, nil)
if err != nil {
return err
}
}
{
activityInput := DeleteStoredNodePoolActivityInput{
ClusterID: input.ClusterID,
ClusterName: input.ClusterName,
NodePoolName: input.NodePoolName,
OrganizationID: input.OrganizationID,
}
err := workflow.ExecuteActivity(ctx, DeleteStoredNodePoolActivityName, activityInput).
Get(ctx, nil)
if err != nil {
return err
}
}
{
activityInput := clusterworkflow.DeleteNodePoolLabelSetActivityInput{
ClusterID: input.ClusterID,
NodePoolName: input.NodePoolName,
}
err := workflow.ExecuteActivity(
ctx, clusterworkflow.DeleteNodePoolLabelSetActivityName, activityInput,
).Get(ctx, nil)
if err != nil {
return err
}
}
if input.ShouldUpdateClusterStatus {
input := SetClusterStatusActivityInput{
ClusterID: input.ClusterID,
Status: cluster.Running,
StatusMessage: cluster.RunningMessage,
}
err := workflow.ExecuteActivity(ctx, SetClusterStatusActivityName, input).Get(ctx, nil)
if err != nil {
return err
}
}
return nil
}
// Register registers the activity in the worker.
func (w DeleteNodePoolWorkflow) Register(worker worker.Registry) {
worker.RegisterWorkflowWithOptions(w.Execute, workflow.RegisterOptions{Name: DeleteNodePoolWorkflowName})
}