/
bootstrap_workflow.go
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/
bootstrap_workflow.go
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// Copyright © 2019 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"
"emperror.dev/errors"
"github.com/Masterminds/semver/v3"
"go.uber.org/cadence"
"go.uber.org/cadence/workflow"
"github.com/banzaicloud/pipeline/internal/cluster/infrastructure/aws/awsworkflow"
pkgCadence "github.com/banzaicloud/pipeline/pkg/cadence"
)
const BootstrapWorkflowName = "eks-bootstrap-flow"
// BootstrapWorkflow creates EKS addons and other EKS related configs
type BootstrapWorkflow struct {
awsSessionFactory *awsworkflow.AWSSessionFactory
enableAddons bool
}
// BootstrapWorkflowInput holds input data
type BootstrapWorkflowInput struct {
EKSActivityInput
KubernetesVersion string
NodeInstanceRoleArn string
ClusterUserArn string
AuthConfigMap string
}
// NewBootstrapWorkflow instantiates a new BootstrapWorkflow
func NewBootstrapWorkflow(awsSessionFactory *awsworkflow.AWSSessionFactory, enableAddons bool) *BootstrapWorkflow {
return &BootstrapWorkflow{
awsSessionFactory: awsSessionFactory,
enableAddons: enableAddons,
}
}
func (a *BootstrapWorkflow) Execute(ctx workflow.Context, input BootstrapWorkflowInput) error {
ao := workflow.ActivityOptions{
ScheduleToStartTimeout: 10 * time.Minute,
StartToCloseTimeout: 5 * time.Minute,
WaitForCancellation: true,
RetryPolicy: &cadence.RetryPolicy{
InitialInterval: 2 * time.Second,
BackoffCoefficient: 1.5,
MaximumInterval: 30 * time.Second,
MaximumAttempts: 5,
},
}
ctx = workflow.WithActivityOptions(ctx, ao)
commonActivityInput := EKSActivityInput{
OrganizationID: input.OrganizationID,
SecretID: input.SecretID,
Region: input.Region,
ClusterName: input.ClusterName,
}
// install EKS addons
// check add-on are enabled and K8s version is >= 1.18
constraint, err := semver.NewConstraint(">=1.18")
if err != nil {
return errors.WrapIf(err, "could not set 1.18 constraint for semver")
}
kubeVersion, err := semver.NewVersion(input.KubernetesVersion)
if err != nil {
return errors.WrapIf(err, "could not set eks version for semver check")
}
enableAddonFutures := make([]workflow.Future, 0, 3)
enableAddonErrors := make([]error, 0, 3)
if a.enableAddons && constraint.Check(kubeVersion) {
enableAddonFutures = append(enableAddonFutures,
workflow.ExecuteActivity(ctx, CreateAddonActivityName,
CreateAddonActivityInput{
EKSActivityInput: commonActivityInput,
KubernetesVersion: input.KubernetesVersion,
AddonName: "coredns",
}),
workflow.ExecuteActivity(ctx, CreateAddonActivityName,
CreateAddonActivityInput{
EKSActivityInput: commonActivityInput,
KubernetesVersion: input.KubernetesVersion,
AddonName: "vpc-cni",
}),
workflow.ExecuteActivity(ctx, CreateAddonActivityName,
CreateAddonActivityInput{
EKSActivityInput: commonActivityInput,
KubernetesVersion: input.KubernetesVersion,
AddonName: "kube-proxy",
}),
workflow.ExecuteActivity(ctx, CreateAddonActivityName,
CreateAddonActivityInput{
EKSActivityInput: commonActivityInput,
KubernetesVersion: input.KubernetesVersion,
AddonName: "aws-ebs-csi-driver",
}),
)
}
for _, future := range enableAddonFutures {
enableAddonErrors = append(enableAddonErrors, pkgCadence.UnwrapError(future.Get(ctx, nil)))
}
if err := errors.Combine(enableAddonErrors...); err != nil {
return err
}
// initial setup of K8s cluster
{
activityInput := &BootstrapActivityInput{
EKSActivityInput: commonActivityInput,
KubernetesVersion: input.KubernetesVersion,
NodeInstanceRoleArn: input.NodeInstanceRoleArn,
ClusterUserArn: input.ClusterUserArn,
AuthConfigMap: input.AuthConfigMap,
}
bootstrapActivityOutput := &BootstrapActivityOutput{}
// wait for initial cluster setup to terminate
err = workflow.ExecuteActivity(ctx, BootstrapActivityName, activityInput).Get(ctx, &bootstrapActivityOutput)
if err != nil {
return err
}
}
return nil
}