Go以AWS提供的SDK aws-sdk-go-v2
來取得Direct Connect gateway與Virtual private gateway的關聯。
事前要求
參考「AWS 建立IAM管理使用者及credentials」設定供應用程式存取AWS需要的credentials。
參考「Golang 關聯AWS Direct Connect gateway與Virtual private gateway」建立Direct Connect gateway與Virtual private gateway關聯。
取得Direct Connect gateway與Virtual private gateway關聯
呼叫directconnect.Client.DescribeDirectConnectGatewayAssociations
傳入參數directconnect.DescribeDirectConnectGatewayAssociationsInput
來取得Direct Connect gateway與Virtual private gateway的關聯。
directconnect.DescribeDirectConnectGatewayAssociationsInput.DirectConnectGatewayId
填入Direct Connect gateway的ID。
directconnect.DescribeDirectConnectGatewayAssociationsInput.VirtualGatewayId
填入Virtual private gateway的ID。
main.go
package main
import (
"context"
"fmt"
"github.com/aws/aws-sdk-go-v2/config"
"github.com/aws/aws-sdk-go-v2/service/directconnect"
)
func main() {
ctx := context.TODO()
client := NewDirectConnectClient(ctx)
directConnectGatewayId := "e44e0dfb-82b9-4e4f-bcc1-9d196f25d0af"
virtualGatewayId := "vgw-0670c529abefaee33"
params := &directconnect.DescribeDirectConnectGatewayAssociationsInput{
DirectConnectGatewayId: &directConnectGatewayId,
VirtualGatewayId: &virtualGatewayId,
}
output, err := client.DescribeDirectConnectGatewayAssociations(ctx, params)
if err != nil {
panic(err)
}
fmt.Println(*output.DirectConnectGatewayAssociations[0].AssociationId) // 047dd041-3388-4907-a1df-f61de4644c0b
fmt.Println(output.DirectConnectGatewayAssociations[0].AssociationState) // associated
for _, prefix := range output.DirectConnectGatewayAssociations[0].AllowedPrefixesToDirectConnectGateway {
fmt.Println(*prefix.Cidr)
}
}
func NewDirectConnectClient(ctx context.Context) *directconnect.Client {
cfg, err := config.LoadDefaultConfig(
ctx,
config.WithRegion("ap-northeast-1"),
)
if err != nil {
panic(err)
}
return directconnect.NewFromConfig(cfg) // Create an Amazon Direct Connect service client
}
測試
執行Go應用程式輸出以下結果。
047dd041-3388-4907-a1df-f61de4644c0b
associated
172.32.0.0/16
172.34.0.0/16
172.31.0.0/16
172.33.0.0/16
在AWS console檢視的Direct Connect gateway關聯的Virtual private gateway。
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