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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,137 @@ | ||
| package aws | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
|
|
||
| "github.com/mweagle/go-cloudformation" | ||
| ) | ||
|
|
||
| func generateTemplate(certs []string) (string, error) { | ||
| template := cloudformation.NewTemplate() | ||
| template.Description = "Load Balancer for Kubernetes Ingress" | ||
| template.Parameters = map[string]*cloudformation.Parameter{ | ||
| "LoadBalancerSchemeParameter": &cloudformation.Parameter{ | ||
| Type: "String", | ||
| Description: "The Load Balancer scheme - 'internal' or 'internet-facing'", | ||
| Default: "internet-facing", | ||
| }, | ||
| "LoadBalancerSecurityGroupParameter": &cloudformation.Parameter{ | ||
| Type: "List<AWS::EC2::SecurityGroup::Id>", | ||
| Description: "The security group ID for the Load Balancer", | ||
| }, | ||
| "LoadBalancerSubnetsParameter": &cloudformation.Parameter{ | ||
| Type: "List<AWS::EC2::Subnet::Id>", | ||
| Description: "The list of subnets IDs for the Load Balancer", | ||
| }, | ||
| "TargetGroupHealthCheckPathParameter": &cloudformation.Parameter{ | ||
| Type: "String", | ||
| Description: "The healthcheck path", | ||
| Default: "/kube-system/healthz", | ||
| }, | ||
| "TargetGroupHealthCheckPortParameter": &cloudformation.Parameter{ | ||
| Type: "Number", | ||
| Description: "The healthcheck port", | ||
| Default: "9999", | ||
| }, | ||
| "TargetGroupHealthCheckIntervalParameter": &cloudformation.Parameter{ | ||
| Type: "Number", | ||
| Description: "The healthcheck interval", | ||
| Default: "10", | ||
| }, | ||
| "TargetGroupVPCIDParameter": &cloudformation.Parameter{ | ||
| Type: "AWS::EC2::VPC::Id", | ||
| Description: "The VPCID for the TargetGroup", | ||
| }, | ||
| // "ListenerCertificatesParameter": &cloudformation.Parameter{ | ||
| // Type: "String", | ||
| // Description: "The HTTPS Listener certificate ARNs (IAM/ACM)", | ||
| // Default: "", | ||
| // }, | ||
| } | ||
| // template.Conditions = map[string]interface{}{ | ||
| // "": "", | ||
| // } | ||
| template.AddResource("HTTPListener", &cloudformation.ElasticLoadBalancingV2Listener{ | ||
| DefaultActions: &cloudformation.ElasticLoadBalancingV2ListenerActionList{ | ||
| { | ||
| Type: cloudformation.String("forward"), | ||
| TargetGroupArn: cloudformation.Ref("TG").String(), | ||
| }, | ||
| }, | ||
| LoadBalancerArn: cloudformation.Ref("LB").String(), | ||
| Port: cloudformation.Integer(80), | ||
| Protocol: cloudformation.String("HTTP"), | ||
| }) | ||
|
|
||
| if len(certs) > 0 { | ||
| defaultCertificateARN := cloudformation.ElasticLoadBalancingV2ListenerCertificatePropertyList{ | ||
| { | ||
| CertificateArn: cloudformation.String(certs[0]), | ||
| }, | ||
| } | ||
|
|
||
| template.AddResource("HTTPSListener", &cloudformation.ElasticLoadBalancingV2Listener{ | ||
| DefaultActions: &cloudformation.ElasticLoadBalancingV2ListenerActionList{ | ||
| { | ||
| Type: cloudformation.String("forward"), | ||
| TargetGroupArn: cloudformation.Ref("TG").String(), | ||
| }, | ||
| }, | ||
| Certificates: &defaultCertificateARN, | ||
| LoadBalancerArn: cloudformation.Ref("LB").String(), | ||
| Port: cloudformation.Integer(443), | ||
| Protocol: cloudformation.String("HTTPS"), | ||
| }) | ||
|
|
||
| if len(certs) > 1 { | ||
| certificateARNs := make(cloudformation.ElasticLoadBalancingV2ListenerCertificateCertificateList, 0, len(certs)-1) | ||
| for _, cert := range certs[1:] { | ||
| c := cloudformation.ElasticLoadBalancingV2ListenerCertificateCertificate{ | ||
| CertificateArn: cloudformation.String(cert), | ||
| } | ||
| certificateARNs = append(certificateARNs, c) | ||
| } | ||
|
|
||
| template.AddResource("HTTPSListenerCertificate", &cloudformation.ElasticLoadBalancingV2ListenerCertificate{ | ||
| Certificates: &certificateARNs, | ||
| ListenerArn: cloudformation.Ref("HTTPSListener").String(), | ||
| }) | ||
| } | ||
| } | ||
| template.AddResource("LB", &cloudformation.ElasticLoadBalancingV2LoadBalancer{ | ||
| Scheme: cloudformation.Ref("LoadBalancerSchemeParameter").String(), | ||
| SecurityGroups: cloudformation.Ref("LoadBalancerSecurityGroupParameter").StringList(), | ||
| Subnets: cloudformation.Ref("LoadBalancerSubnetsParameter").StringList(), | ||
| Tags: &cloudformation.TagList{ | ||
| { | ||
| Key: cloudformation.String("StackName"), | ||
| Value: cloudformation.Ref("AWS::StackName").String(), | ||
| }, | ||
| }, | ||
| }) | ||
| template.AddResource("TG", &cloudformation.ElasticLoadBalancingV2TargetGroup{ | ||
| HealthCheckIntervalSeconds: cloudformation.Ref("TargetGroupHealthCheckIntervalParameter").Integer(), | ||
| HealthCheckPath: cloudformation.Ref("TargetGroupHealthCheckPathParameter").String(), | ||
| Port: cloudformation.Ref("TargetGroupHealthCheckPortParameter").Integer(), | ||
| Protocol: cloudformation.String("HTTP"), | ||
| VPCID: cloudformation.Ref("TargetGroupVPCIDParameter").String(), | ||
| }) | ||
|
|
||
| template.Outputs = map[string]*cloudformation.Output{ | ||
| "LoadBalancerDNSName": &cloudformation.Output{ | ||
| Description: "DNS name for the LoadBalancer", | ||
| Value: cloudformation.GetAtt("LB", "DNSName").String(), | ||
| }, | ||
| "TargetGroupARN": &cloudformation.Output{ | ||
| Description: "The ARN of the TargetGroup", | ||
| Value: cloudformation.Ref("TG").String(), | ||
| }, | ||
| } | ||
|
|
||
| stackTemplate, err := json.MarshalIndent(template, "", " ") | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| return string(stackTemplate), nil | ||
| } |
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