func ExampleCloudFormation_EstimateTemplateCost() {
	svc := cloudformation.New(session.New())

	params := &cloudformation.EstimateTemplateCostInput{
		Parameters: []*cloudformation.Parameter{
			{ // Required
				ParameterKey:     aws.String("ParameterKey"),
				ParameterValue:   aws.String("ParameterValue"),
				UsePreviousValue: aws.Bool(true),
			},
			// More values...
		},
		TemplateBody: aws.String("TemplateBody"),
		TemplateURL:  aws.String("TemplateURL"),
	}
	resp, err := svc.EstimateTemplateCost(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

func ExampleCloudFormation_CreateStack() {
	svc := cloudformation.New(session.New())

	params := &cloudformation.CreateStackInput{
		StackName: aws.String("StackName"), // Required
		Capabilities: []*string{
			aws.String("Capability"), // Required
			// More values...
		},
		DisableRollback: aws.Bool(true),
		NotificationARNs: []*string{
			aws.String("NotificationARN"), // Required
			// More values...
		},
		OnFailure: aws.String("OnFailure"),
		Parameters: []*cloudformation.Parameter{
			{ // Required
				ParameterKey:     aws.String("ParameterKey"),
				ParameterValue:   aws.String("ParameterValue"),
				UsePreviousValue: aws.Bool(true),
			},
			// More values...
		},
		ResourceTypes: []*string{
			aws.String("ResourceType"), // Required
			// More values...
		},
		StackPolicyBody: aws.String("StackPolicyBody"),
		StackPolicyURL:  aws.String("StackPolicyURL"),
		Tags: []*cloudformation.Tag{
			{ // Required
				Key:   aws.String("TagKey"),
				Value: aws.String("TagValue"),
			},
			// More values...
		},
		TemplateBody:     aws.String("TemplateBody"),
		TemplateURL:      aws.String("TemplateURL"),
		TimeoutInMinutes: aws.Int64(1),
	}
	resp, err := svc.CreateStack(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

func ExampleCloudFormation_DeleteStack() {
	svc := cloudformation.New(session.New())

	params := &cloudformation.DeleteStackInput{
		StackName: aws.String("StackName"), // Required
	}
	resp, err := svc.DeleteStack(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

func ExampleCloudFormation_DescribeAccountLimits() {
	svc := cloudformation.New(session.New())

	params := &cloudformation.DescribeAccountLimitsInput{
		NextToken: aws.String("NextToken"),
	}
	resp, err := svc.DescribeAccountLimits(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

func ExampleCloudFormation_ValidateTemplate() {
	svc := cloudformation.New(session.New())

	params := &cloudformation.ValidateTemplateInput{
		TemplateBody: aws.String("TemplateBody"),
		TemplateURL:  aws.String("TemplateURL"),
	}
	resp, err := svc.ValidateTemplate(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

func ExampleCloudFormation_ListStackResources() {
	svc := cloudformation.New(session.New())

	params := &cloudformation.ListStackResourcesInput{
		StackName: aws.String("StackName"), // Required
		NextToken: aws.String("NextToken"),
	}
	resp, err := svc.ListStackResources(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

func ExampleCloudFormation_SetStackPolicy() {
	svc := cloudformation.New(session.New())

	params := &cloudformation.SetStackPolicyInput{
		StackName:       aws.String("StackName"), // Required
		StackPolicyBody: aws.String("StackPolicyBody"),
		StackPolicyURL:  aws.String("StackPolicyURL"),
	}
	resp, err := svc.SetStackPolicy(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

func ExampleCloudFormation_DescribeStackResources() {
	svc := cloudformation.New(session.New())

	params := &cloudformation.DescribeStackResourcesInput{
		LogicalResourceId:  aws.String("LogicalResourceId"),
		PhysicalResourceId: aws.String("PhysicalResourceId"),
		StackName:          aws.String("StackName"),
	}
	resp, err := svc.DescribeStackResources(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

func ExampleCloudFormation_SignalResource() {
	svc := cloudformation.New(session.New())

	params := &cloudformation.SignalResourceInput{
		LogicalResourceId: aws.String("LogicalResourceId"),      // Required
		StackName:         aws.String("StackNameOrId"),          // Required
		Status:            aws.String("ResourceSignalStatus"),   // Required
		UniqueId:          aws.String("ResourceSignalUniqueId"), // Required
	}
	resp, err := svc.SignalResource(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

func ExampleCloudFormation_ListStacks() {
	svc := cloudformation.New(session.New())

	params := &cloudformation.ListStacksInput{
		NextToken: aws.String("NextToken"),
		StackStatusFilter: []*string{
			aws.String("StackStatus"), // Required
			// More values...
		},
	}
	resp, err := svc.ListStacks(params)

	if err != nil {
		// Print the error, cast err to awserr.Error to get the Code and
		// Message from an error.
		fmt.Println(err.Error())
		return
	}

	// Pretty-print the response data.
	fmt.Println(resp)
}

func cmdInstall(c *cli.Context) {
	region := c.String("region")

	if !lambdaRegions[region] {
		stdcli.Error(fmt.Errorf("Convox is not currently supported in %s", region))
	}

	tenancy := "default"
	instanceType := c.String("instance-type")

	if c.Bool("dedicated") {
		tenancy = "dedicated"
		if strings.HasPrefix(instanceType, "t2") {
			stdcli.Error(fmt.Errorf("t2 instance types aren't supported in dedicated tenancy, please set --instance-type."))
		}
	}

	fmt.Println(Banner)

	distinctId, err := currentId()
	creds, err := readCredentials(c)

	if err != nil {
		handleError("install", distinctId, err)
		return
	}

	if creds == nil {
		err = fmt.Errorf("error reading credentials")
		handleError("install", distinctId, err)
		return
	}

	reader := bufio.NewReader(os.Stdin)

	if email := c.String("email"); email != "" {
		distinctId = email
		updateId(distinctId)
	} else if terminal.IsTerminal(int(os.Stdin.Fd())) {
		fmt.Print("Email Address (optional, to receive project updates): ")

		email, err := reader.ReadString('\n')

		if err != nil {
			handleError("install", distinctId, err)
			return
		}

		if strings.TrimSpace(email) != "" {
			distinctId = email
			updateId(email)
		}
	}

	development := "No"
	if c.Bool("development") {
		isDevelopment = true
		development = "Yes"
	}

	encryption := "Yes"
	if c.Bool("disable-encryption") {
		encryption = "No"
	}

	ami := c.String("ami")

	key := c.String("key")

	stackName := c.String("stack-name")

	vpcCIDR := c.String("vpc-cidr")

	subnet0CIDR := c.String("subnet0-cidr")

	subnet1CIDR := c.String("subnet1-cidr")

	subnet2CIDR := c.String("subnet2-cidr")

	versions, err := version.All()

	if err != nil {
		handleError("install", distinctId, err)
		return
	}

	version, err := versions.Resolve(c.String("version"))

	if err != nil {
		handleError("install", distinctId, err)
		return
	}

	versionName := version.Version
	formationUrl := fmt.Sprintf(FormationUrl, versionName)

	instanceCount := fmt.Sprintf("%d", c.Int("instance-count"))

	fmt.Printf("Installing Convox (%s)...\n", versionName)

//.........这里部分代码省略.........

func cmdUninstall(c *cli.Context) {
	if !c.Bool("force") {
		apps, err := rackClient(c).GetApps()

		if err != nil {
			stdcli.Error(err)
			return
		}

		if len(apps) != 0 {
			stdcli.Error(fmt.Errorf("Please delete all apps before uninstalling."))
		}
	}

	fmt.Println(Banner)

	creds, err := readCredentials(c)
	if err != nil {
		stdcli.Error(err)
		return
	}

	if creds == nil {
		stdcli.Error(fmt.Errorf("error reading credentials"))
		return
	}

	region := c.String("region")
	stackName := c.String("stack-name")

	fmt.Println("")

	fmt.Println("Uninstalling Convox...")

	distinctId := randomString(10)

	CloudFormation := cloudformation.New(&aws.Config{
		Region:      aws.String(region),
		Credentials: credentials.NewStaticCredentials(creds.Access, creds.Secret, creds.Session),
	})

	res, err := CloudFormation.DescribeStacks(&cloudformation.DescribeStacksInput{
		StackName: aws.String(stackName),
	})

	if err != nil {
		sendMixpanelEvent(fmt.Sprintf("convox-uninstall-error"), err.Error())

		if awsErr, ok := err.(awserr.Error); ok {
			if awsErr.Code() == "ValidationError" {
				stdcli.Error(fmt.Errorf("Stack %q does not exist.", stackName))
			}
		}

		stdcli.Error(err)
	}

	stackId := *res.Stacks[0].StackId

	_, err = CloudFormation.DeleteStack(&cloudformation.DeleteStackInput{
		StackName: aws.String(stackId),
	})

	if err != nil {
		handleError("uninstall", distinctId, err)
		return
	}

	sendMixpanelEvent("convox-uninstall-start", "")

	_, err = waitForCompletion(stackId, CloudFormation, true)

	if err != nil {
		handleError("uninstall", distinctId, err)
		return
	}

	host := ""
	for _, o := range res.Stacks[0].Outputs {
		if *o.OutputKey == "Dashboard" {
			host = *o.OutputValue
			break
		}
	}

	if configuredHost, _ := currentHost(); configuredHost == host {
		removeHost()
	}
	removeLogin(host)

	fmt.Println("Successfully uninstalled.")

	sendMixpanelEvent("convox-uninstall-success", "")
}

func CloudFormation(req Request) *cloudformation.CloudFormation {
	return cloudformation.New(session.New(), &aws.Config{
		Credentials: Credentials(&req),
		Region:      Region(&req),
	})
}

func (p *AWSProvider) cloudformation() *cloudformation.CloudFormation {
	return cloudformation.New(session.New(), p.config())
}

func cmdUninstall(c *cli.Context) {
	if !c.Bool("force") {
		apps, err := rackClient(c).GetApps()

		if err != nil {
			stdcli.Error(err)
			return
		}

		if len(apps) != 0 {
			stdcli.Error(fmt.Errorf("Please delete all apps before uninstalling."))
		}

		services, err := rackClient(c).GetServices()

		if err != nil {
			stdcli.Error(err)
			return
		}

		if len(services) != 0 {
			stdcli.Error(fmt.Errorf("Please delete all services before uninstalling."))
		}
	}

	fmt.Println(Banner)

	creds, err := readCredentials(c)
	if err != nil {
		stdcli.Error(err)
		return
	}

	if creds == nil {
		stdcli.Error(fmt.Errorf("error reading credentials"))
		return
	}

	region := c.String("region")
	stackName := c.String("stack-name")

	fmt.Println("")

	fmt.Println("Uninstalling Convox...")

	// CF Stack Delete and Retry could take 30+ minutes. Periodically generate more progress output.
	go func() {
		t := time.Tick(2 * time.Minute)
		for range t {
			fmt.Println("Uninstalling Convox...")
		}
	}()

	distinctId := randomString(10)

	CloudFormation := cloudformation.New(session.New(), awsConfig(region, creds))

	res, err := CloudFormation.DescribeStacks(&cloudformation.DescribeStacksInput{
		StackName: aws.String(stackName),
	})

	if err != nil {
		sendMixpanelEvent(fmt.Sprintf("convox-uninstall-error"), err.Error())

		if awsErr, ok := err.(awserr.Error); ok {
			if awsErr.Code() == "ValidationError" {
				stdcli.Error(fmt.Errorf("Stack %q does not exist.", stackName))
			}
		}

		stdcli.Error(err)
	}

	stackId := *res.Stacks[0].StackId

	_, err = CloudFormation.DeleteStack(&cloudformation.DeleteStackInput{
		StackName: aws.String(stackId),
	})

	if err != nil {
		handleError("uninstall", distinctId, err)
		return
	}

	sendMixpanelEvent("convox-uninstall-start", "")

	_, err = waitForCompletion(stackId, CloudFormation, true)

	if err != nil {
		sendMixpanelEvent("convox-uninstall-retry", "")

		_, err = CloudFormation.DeleteStack(&cloudformation.DeleteStackInput{
			StackName: aws.String(stackId),
		})

		if err != nil {
			handleError("uninstall", distinctId, err)
			return
		}

//.........这里部分代码省略.........

func CloudFormation() *cloudformation.CloudFormation {
	return cloudformation.New(awsConfig())
}

func cmdInstall(c *cli.Context) {
	region := c.String("region")

	if !lambdaRegions[region] {
		stdcli.Error(fmt.Errorf("Convox is not currently supported in %s", region))
	}

	stackName := c.String("stack-name")
	awsRegexRules := []string{
		//ecr: http://docs.aws.amazon.com/AmazonECR/latest/APIReference/API_CreateRepository.html
		"(?:[a-z0-9]+(?:[._-][a-z0-9]+)*/)*[a-z0-9]+(?:[._-][a-z0-9]+)*",
		//cloud formation: https://forums.aws.amazon.com/thread.jspa?threadID=118427
		"[a-zA-Z][-a-zA-Z0-9]*",
	}

	for _, r := range awsRegexRules {
		rp := regexp.MustCompile(r)
		matchedStr := rp.FindString(stackName)
		match := len(matchedStr) == len(stackName)

		if !match {
			stdcli.Error(fmt.Errorf("Stack name is invalid, must match [a-z0-9-]*"))
		}
	}

	tenancy := "default"
	instanceType := c.String("instance-type")

	if c.Bool("dedicated") {
		tenancy = "dedicated"
		if strings.HasPrefix(instanceType, "t2") {
			stdcli.Error(fmt.Errorf("t2 instance types aren't supported in dedicated tenancy, please set --instance-type."))
		}
	}

	fmt.Println(Banner)

	distinctId, err := currentId()
	creds, err := readCredentials(c)

	if err != nil {
		handleError("install", distinctId, err)
		return
	}

	if creds == nil {
		err = fmt.Errorf("error reading credentials")
		handleError("install", distinctId, err)
		return
	}

	reader := bufio.NewReader(os.Stdin)

	if email := c.String("email"); email != "" {
		distinctId = email
		updateId(distinctId)
	} else if terminal.IsTerminal(int(os.Stdin.Fd())) {
		fmt.Print("Email Address (optional, to receive project updates): ")

		email, err := reader.ReadString('\n')

		if err != nil {
			handleError("install", distinctId, err)
			return
		}

		if strings.TrimSpace(email) != "" {
			distinctId = email
			updateId(email)
		}
	}

	development := "No"
	if c.Bool("development") {
		isDevelopment = true
		development = "Yes"
	}

	private := "No"
	if c.Bool("private") {
		private = "Yes"
	}

	privateApi := "No"
	if c.Bool("private-api") {
		private = "Yes"
		privateApi = "Yes"
	}

	ami := c.String("ami")

	key := c.String("key")

	vpcCIDR := c.String("vpc-cidr")

	subnet0CIDR := c.String("subnet0-cidr")
	subnet1CIDR := c.String("subnet1-cidr")
	subnet2CIDR := c.String("subnet2-cidr")

	subnetPrivate0CIDR := c.String("subnet-private0-cidr")
//.........这里部分代码省略.........