Golang EC2.RunInstances方法代碼示例

// This function will take several pieces of information and launch a new AWS instance
// It requires the ID of the image, the security group to apply, the subnet ID to
// start the instance in, the name of the key for authentication, the type of instance
// as well as the number of instances to start.  It'll return the reservation object
// That we get back from the API.
func launchInstance(amiid, secgrpid, subnet, instancetype, ca, crt, key string, number int, ec2client *ec2.EC2) (ec2.Reservation, error) {
	cloudconfig := `#cloud-config
# vim: syntax=yaml
#
package_update: true
package_upgrade: true
packages: 
 - cracklord-resourced
write_files:
-   content: |
` + addSpacesToUserDataFile(ca) + `
    path: /etc/cracklord/ssl/cracklord_ca.pem
-   content: |
` + addSpacesToUserDataFile(crt) + `
    path: /etc/cracklord/ssl/resourced.crt
-   content: |
` + addSpacesToUserDataFile(key) + `
    path: /etc/cracklord/ssl/resourced.key`

	userdata := base64.StdEncoding.EncodeToString([]byte(cloudconfig))

	// Build our request, converting the go base types into the pointers required by the SDK
	instanceReq := ec2.RunInstancesInput{
		ImageId:      aws.String(amiid),
		MaxCount:     aws.Int64(int64(number)),
		MinCount:     aws.Int64(int64(number)),
		InstanceType: aws.String(instancetype),
		// Because we're making this VPC aware, we also have to include a network interface specification
		NetworkInterfaces: []*ec2.InstanceNetworkInterfaceSpecification{
			{
				AssociatePublicIpAddress: aws.Bool(true),
				DeviceIndex:              aws.Int64(0),
				SubnetId:                 aws.String(subnet),
				Groups: []*string{
					aws.String(secgrpid),
				},
			},
		},
		UserData: aws.String(userdata),
	}

	// Finally, we make our request
	instanceResp, err := ec2client.RunInstances(&instanceReq)
	if err != nil {
		return ec2.Reservation{}, err
	}

	return *instanceResp, nil
}

func createInstance(svc *ec2.EC2, config *Config, ec2config EC2, userdata string, doneChan chan string) int {
	var min int64
	var max int64
	min = 1
	max = 1

	remainingSteps := 0

	var subnet string
	if ec2config.HasExternalIP {
		subnet = config.PublicSubnetId
	} else {
		subnet = config.PrivateSubnetId
	}

	//fmt.Println("Public: ", config.PublicSubnetId)
	//fmt.Println("Private: ", config.PrivateSubnetId)
	//fmt.Println("Using: ", subnet)
	//if isEc2PartofLb(config, ec2config) {
	//	subnet = config.PrivateSubnetId
	//}

	ec2config.SecurityGroupIds = getSecurityGroupIds(svc, config, ec2config.SecurityGroups)
	keyname := ec2config.KeyName
	if keyname == "" {
		keyname = config.KeyPair
	}
	params := &ec2.RunInstancesInput{
		ImageId:          &ec2config.AMI,
		InstanceType:     &ec2config.InstanceType,
		MaxCount:         &max,
		MinCount:         &min,
		KeyName:          &keyname,
		UserData:         &userdata,
		SubnetId:         &subnet,
		SecurityGroupIds: ec2config.SecurityGroupIds,
	}
	//fmt.Println("Create instance params:", params)

	rres, err := svc.RunInstances(params)
	if err != nil {
		fmt.Println("Failed to create instance", err)
		fmt.Println(rres)
	} else {
		fmt.Printf("Created instance %s: %s\n", ec2config.Name, *rres.Instances[0].InstanceId)
		ec2config.InstanceId = *rres.Instances[0].InstanceId
		//fmt.Println(rres)

		//fmt.Println("Sleeping for a sec to give AWS some time ...")

		time.Sleep(1 * time.Second)

		keyname := "Name"
		_, err := svc.CreateTags(&ec2.CreateTagsInput{
			Resources: []*string{rres.Instances[0].InstanceId},
			Tags: []*ec2.Tag{
				&ec2.Tag{
					Key:   &keyname,
					Value: &ec2config.Name,
				},
			},
		})
		//fmt.Println(tres)

		if err != nil {
			fmt.Println("Could not create tags for instance ", rres.Instances[0].InstanceId)
			fmt.Println(err)
		} //else {
		//fmt.Println("Created tag Name with value", ec2config.Name)
		//fmt.Println("isnat", ec2config.IsNat)
		if ec2config.IsNat {
			remainingSteps++

			go func() {

				err = waitForNonPendingState(svc, rres.Instances[0].InstanceId)
				if err != nil {
					fmt.Println(err)
					doneChan <- "Gave up waiting on ec2 to leave pending state."
					return
				}

				bv := false
				abv := &ec2.AttributeBooleanValue{Value: &bv}
				miai := &ec2.ModifyInstanceAttributeInput{InstanceId: rres.Instances[0].InstanceId, SourceDestCheck: abv}
				_, err := svc.ModifyInstanceAttribute(miai)
				if err != nil {
					fmt.Println("Failed to change sourcedestcheck", err)
				}

				routeid, err := getPrivateRouteTable(svc, &config.PrivateSubnetId, config.VpcId)
				if err != nil {
					routeid, err = createPrivateRouteTable(svc, config)
				} else {
					_ = deleteDefaultRoute(svc, routeid)
					/*if err != nil {
						fmt.Println("Error deleting default route or default route existed", err)
					}*/
				}

//.........這裏部分代碼省略.........