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api_op_DescribeCustomerGateways.go
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api_op_DescribeCustomerGateways.go
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// Code generated by smithy-go-codegen DO NOT EDIT.
package ec2
import (
"context"
"fmt"
awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
"github.com/aws/aws-sdk-go-v2/aws/signer/v4"
"github.com/aws/aws-sdk-go-v2/service/ec2/types"
"github.com/aws/smithy-go/middleware"
smithytime "github.com/aws/smithy-go/time"
smithyhttp "github.com/aws/smithy-go/transport/http"
smithywaiter "github.com/aws/smithy-go/waiter"
"github.com/jmespath/go-jmespath"
"time"
)
// Describes one or more of your VPN customer gateways. For more information, see
// Amazon Web Services Site-to-Site VPN
// (https://docs.aws.amazon.com/vpn/latest/s2svpn/VPC_VPN.html) in the Amazon Web
// Services Site-to-Site VPN User Guide.
func (c *Client) DescribeCustomerGateways(ctx context.Context, params *DescribeCustomerGatewaysInput, optFns ...func(*Options)) (*DescribeCustomerGatewaysOutput, error) {
if params == nil {
params = &DescribeCustomerGatewaysInput{}
}
result, metadata, err := c.invokeOperation(ctx, "DescribeCustomerGateways", params, optFns, c.addOperationDescribeCustomerGatewaysMiddlewares)
if err != nil {
return nil, err
}
out := result.(*DescribeCustomerGatewaysOutput)
out.ResultMetadata = metadata
return out, nil
}
// Contains the parameters for DescribeCustomerGateways.
type DescribeCustomerGatewaysInput struct {
// One or more customer gateway IDs. Default: Describes all your customer gateways.
CustomerGatewayIds []string
// Checks whether you have the required permissions for the action, without
// actually making the request, and provides an error response. If you have the
// required permissions, the error response is DryRunOperation. Otherwise, it is
// UnauthorizedOperation.
DryRun *bool
// One or more filters.
//
// * bgp-asn - The customer gateway's Border Gateway Protocol
// (BGP) Autonomous System Number (ASN).
//
// * customer-gateway-id - The ID of the
// customer gateway.
//
// * ip-address - The IP address of the customer gateway's
// Internet-routable external interface.
//
// * state - The state of the customer
// gateway (pending | available | deleting | deleted).
//
// * type - The type of
// customer gateway. Currently, the only supported type is ipsec.1.
//
// * tag: - The
// key/value combination of a tag assigned to the resource. Use the tag key in the
// filter name and the tag value as the filter value. For example, to find all
// resources that have a tag with the key Owner and the value TeamA, specify
// tag:Owner for the filter name and TeamA for the filter value.
//
// * tag-key - The
// key of a tag assigned to the resource. Use this filter to find all resources
// assigned a tag with a specific key, regardless of the tag value.
Filters []types.Filter
noSmithyDocumentSerde
}
// Contains the output of DescribeCustomerGateways.
type DescribeCustomerGatewaysOutput struct {
// Information about one or more customer gateways.
CustomerGateways []types.CustomerGateway
// Metadata pertaining to the operation's result.
ResultMetadata middleware.Metadata
noSmithyDocumentSerde
}
func (c *Client) addOperationDescribeCustomerGatewaysMiddlewares(stack *middleware.Stack, options Options) (err error) {
err = stack.Serialize.Add(&awsEc2query_serializeOpDescribeCustomerGateways{}, middleware.After)
if err != nil {
return err
}
err = stack.Deserialize.Add(&awsEc2query_deserializeOpDescribeCustomerGateways{}, middleware.After)
if err != nil {
return err
}
if err = addSetLoggerMiddleware(stack, options); err != nil {
return err
}
if err = awsmiddleware.AddClientRequestIDMiddleware(stack); err != nil {
return err
}
if err = smithyhttp.AddComputeContentLengthMiddleware(stack); err != nil {
return err
}
if err = addResolveEndpointMiddleware(stack, options); err != nil {
return err
}
if err = v4.AddComputePayloadSHA256Middleware(stack); err != nil {
return err
}
if err = addRetryMiddlewares(stack, options); err != nil {
return err
}
if err = addHTTPSignerV4Middleware(stack, options); err != nil {
return err
}
if err = awsmiddleware.AddRawResponseToMetadata(stack); err != nil {
return err
}
if err = awsmiddleware.AddRecordResponseTiming(stack); err != nil {
return err
}
if err = addClientUserAgent(stack); err != nil {
return err
}
if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
return err
}
if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
return err
}
if err = stack.Initialize.Add(newServiceMetadataMiddleware_opDescribeCustomerGateways(options.Region), middleware.Before); err != nil {
return err
}
if err = addRequestIDRetrieverMiddleware(stack); err != nil {
return err
}
if err = addResponseErrorMiddleware(stack); err != nil {
return err
}
if err = addRequestResponseLogging(stack, options); err != nil {
return err
}
return nil
}
// DescribeCustomerGatewaysAPIClient is a client that implements the
// DescribeCustomerGateways operation.
type DescribeCustomerGatewaysAPIClient interface {
DescribeCustomerGateways(context.Context, *DescribeCustomerGatewaysInput, ...func(*Options)) (*DescribeCustomerGatewaysOutput, error)
}
var _ DescribeCustomerGatewaysAPIClient = (*Client)(nil)
// CustomerGatewayAvailableWaiterOptions are waiter options for
// CustomerGatewayAvailableWaiter
type CustomerGatewayAvailableWaiterOptions struct {
// Set of options to modify how an operation is invoked. These apply to all
// operations invoked for this client. Use functional options on operation call to
// modify this list for per operation behavior.
APIOptions []func(*middleware.Stack) error
// MinDelay is the minimum amount of time to delay between retries. If unset,
// CustomerGatewayAvailableWaiter will use default minimum delay of 15 seconds.
// Note that MinDelay must resolve to a value lesser than or equal to the MaxDelay.
MinDelay time.Duration
// MaxDelay is the maximum amount of time to delay between retries. If unset or set
// to zero, CustomerGatewayAvailableWaiter will use default max delay of 120
// seconds. Note that MaxDelay must resolve to value greater than or equal to the
// MinDelay.
MaxDelay time.Duration
// LogWaitAttempts is used to enable logging for waiter retry attempts
LogWaitAttempts bool
// Retryable is function that can be used to override the service defined
// waiter-behavior based on operation output, or returned error. This function is
// used by the waiter to decide if a state is retryable or a terminal state. By
// default service-modeled logic will populate this option. This option can thus be
// used to define a custom waiter state with fall-back to service-modeled waiter
// state mutators.The function returns an error in case of a failure state. In case
// of retry state, this function returns a bool value of true and nil error, while
// in case of success it returns a bool value of false and nil error.
Retryable func(context.Context, *DescribeCustomerGatewaysInput, *DescribeCustomerGatewaysOutput, error) (bool, error)
}
// CustomerGatewayAvailableWaiter defines the waiters for CustomerGatewayAvailable
type CustomerGatewayAvailableWaiter struct {
client DescribeCustomerGatewaysAPIClient
options CustomerGatewayAvailableWaiterOptions
}
// NewCustomerGatewayAvailableWaiter constructs a CustomerGatewayAvailableWaiter.
func NewCustomerGatewayAvailableWaiter(client DescribeCustomerGatewaysAPIClient, optFns ...func(*CustomerGatewayAvailableWaiterOptions)) *CustomerGatewayAvailableWaiter {
options := CustomerGatewayAvailableWaiterOptions{}
options.MinDelay = 15 * time.Second
options.MaxDelay = 120 * time.Second
options.Retryable = customerGatewayAvailableStateRetryable
for _, fn := range optFns {
fn(&options)
}
return &CustomerGatewayAvailableWaiter{
client: client,
options: options,
}
}
// Wait calls the waiter function for CustomerGatewayAvailable waiter. The
// maxWaitDur is the maximum wait duration the waiter will wait. The maxWaitDur is
// required and must be greater than zero.
func (w *CustomerGatewayAvailableWaiter) Wait(ctx context.Context, params *DescribeCustomerGatewaysInput, maxWaitDur time.Duration, optFns ...func(*CustomerGatewayAvailableWaiterOptions)) error {
_, err := w.WaitForOutput(ctx, params, maxWaitDur, optFns...)
return err
}
// WaitForOutput calls the waiter function for CustomerGatewayAvailable waiter and
// returns the output of the successful operation. The maxWaitDur is the maximum
// wait duration the waiter will wait. The maxWaitDur is required and must be
// greater than zero.
func (w *CustomerGatewayAvailableWaiter) WaitForOutput(ctx context.Context, params *DescribeCustomerGatewaysInput, maxWaitDur time.Duration, optFns ...func(*CustomerGatewayAvailableWaiterOptions)) (*DescribeCustomerGatewaysOutput, error) {
if maxWaitDur <= 0 {
return nil, fmt.Errorf("maximum wait time for waiter must be greater than zero")
}
options := w.options
for _, fn := range optFns {
fn(&options)
}
if options.MaxDelay <= 0 {
options.MaxDelay = 120 * time.Second
}
if options.MinDelay > options.MaxDelay {
return nil, fmt.Errorf("minimum waiter delay %v must be lesser than or equal to maximum waiter delay of %v.", options.MinDelay, options.MaxDelay)
}
ctx, cancelFn := context.WithTimeout(ctx, maxWaitDur)
defer cancelFn()
logger := smithywaiter.Logger{}
remainingTime := maxWaitDur
var attempt int64
for {
attempt++
apiOptions := options.APIOptions
start := time.Now()
if options.LogWaitAttempts {
logger.Attempt = attempt
apiOptions = append([]func(*middleware.Stack) error{}, options.APIOptions...)
apiOptions = append(apiOptions, logger.AddLogger)
}
out, err := w.client.DescribeCustomerGateways(ctx, params, func(o *Options) {
o.APIOptions = append(o.APIOptions, apiOptions...)
})
retryable, err := options.Retryable(ctx, params, out, err)
if err != nil {
return nil, err
}
if !retryable {
return out, nil
}
remainingTime -= time.Since(start)
if remainingTime < options.MinDelay || remainingTime <= 0 {
break
}
// compute exponential backoff between waiter retries
delay, err := smithywaiter.ComputeDelay(
attempt, options.MinDelay, options.MaxDelay, remainingTime,
)
if err != nil {
return nil, fmt.Errorf("error computing waiter delay, %w", err)
}
remainingTime -= delay
// sleep for the delay amount before invoking a request
if err := smithytime.SleepWithContext(ctx, delay); err != nil {
return nil, fmt.Errorf("request cancelled while waiting, %w", err)
}
}
return nil, fmt.Errorf("exceeded max wait time for CustomerGatewayAvailable waiter")
}
func customerGatewayAvailableStateRetryable(ctx context.Context, input *DescribeCustomerGatewaysInput, output *DescribeCustomerGatewaysOutput, err error) (bool, error) {
if err == nil {
pathValue, err := jmespath.Search("CustomerGateways[].State", output)
if err != nil {
return false, fmt.Errorf("error evaluating waiter state: %w", err)
}
expectedValue := "available"
var match = true
listOfValues, ok := pathValue.([]interface{})
if !ok {
return false, fmt.Errorf("waiter comparator expected list got %T", pathValue)
}
if len(listOfValues) == 0 {
match = false
}
for _, v := range listOfValues {
value, ok := v.(*string)
if !ok {
return false, fmt.Errorf("waiter comparator expected *string value, got %T", pathValue)
}
if string(*value) != expectedValue {
match = false
}
}
if match {
return false, nil
}
}
if err == nil {
pathValue, err := jmespath.Search("CustomerGateways[].State", output)
if err != nil {
return false, fmt.Errorf("error evaluating waiter state: %w", err)
}
expectedValue := "deleted"
listOfValues, ok := pathValue.([]interface{})
if !ok {
return false, fmt.Errorf("waiter comparator expected list got %T", pathValue)
}
for _, v := range listOfValues {
value, ok := v.(*string)
if !ok {
return false, fmt.Errorf("waiter comparator expected *string value, got %T", pathValue)
}
if string(*value) == expectedValue {
return false, fmt.Errorf("waiter state transitioned to Failure")
}
}
}
if err == nil {
pathValue, err := jmespath.Search("CustomerGateways[].State", output)
if err != nil {
return false, fmt.Errorf("error evaluating waiter state: %w", err)
}
expectedValue := "deleting"
listOfValues, ok := pathValue.([]interface{})
if !ok {
return false, fmt.Errorf("waiter comparator expected list got %T", pathValue)
}
for _, v := range listOfValues {
value, ok := v.(*string)
if !ok {
return false, fmt.Errorf("waiter comparator expected *string value, got %T", pathValue)
}
if string(*value) == expectedValue {
return false, fmt.Errorf("waiter state transitioned to Failure")
}
}
}
return true, nil
}
func newServiceMetadataMiddleware_opDescribeCustomerGateways(region string) *awsmiddleware.RegisterServiceMetadata {
return &awsmiddleware.RegisterServiceMetadata{
Region: region,
ServiceID: ServiceID,
SigningName: "ec2",
OperationName: "DescribeCustomerGateways",
}
}