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api_op_DescribeVpcs.go
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api_op_DescribeVpcs.go
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// Code generated by smithy-go-codegen DO NOT EDIT.
package ec2
import (
"context"
"errors"
"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"
smithy "github.com/aws/smithy-go"
"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 VPCs.
func (c *Client) DescribeVpcs(ctx context.Context, params *DescribeVpcsInput, optFns ...func(*Options)) (*DescribeVpcsOutput, error) {
if params == nil {
params = &DescribeVpcsInput{}
}
result, metadata, err := c.invokeOperation(ctx, "DescribeVpcs", params, optFns, c.addOperationDescribeVpcsMiddlewares)
if err != nil {
return nil, err
}
out := result.(*DescribeVpcsOutput)
out.ResultMetadata = metadata
return out, nil
}
type DescribeVpcsInput struct {
// 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.
//
// * cidr - The primary IPv4 CIDR block of the VPC. The CIDR
// block you specify must exactly match the VPC's CIDR block for information to be
// returned for the VPC. Must contain the slash followed by one or two digits (for
// example, /28).
//
// * cidr-block-association.cidr-block - An IPv4 CIDR block
// associated with the VPC.
//
// * cidr-block-association.association-id - The
// association ID for an IPv4 CIDR block associated with the VPC.
//
// *
// cidr-block-association.state - The state of an IPv4 CIDR block associated with
// the VPC.
//
// * dhcp-options-id - The ID of a set of DHCP options.
//
// *
// ipv6-cidr-block-association.ipv6-cidr-block - An IPv6 CIDR block associated with
// the VPC.
//
// * ipv6-cidr-block-association.ipv6-pool - The ID of the IPv6 address
// pool from which the IPv6 CIDR block is allocated.
//
// *
// ipv6-cidr-block-association.association-id - The association ID for an IPv6 CIDR
// block associated with the VPC.
//
// * ipv6-cidr-block-association.state - The state
// of an IPv6 CIDR block associated with the VPC.
//
// * is-default - Indicates whether
// the VPC is the default VPC.
//
// * owner-id - The ID of the Amazon Web Services
// account that owns the VPC.
//
// * state - The state of the VPC (pending |
// available).
//
// * 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.
//
// * vpc-id - The ID of the VPC.
Filters []types.Filter
// The maximum number of results to return with a single call. To retrieve the
// remaining results, make another call with the returned nextToken value.
MaxResults *int32
// The token for the next page of results.
NextToken *string
// One or more VPC IDs. Default: Describes all your VPCs.
VpcIds []string
noSmithyDocumentSerde
}
type DescribeVpcsOutput struct {
// The token to use to retrieve the next page of results. This value is null when
// there are no more results to return.
NextToken *string
// Information about one or more VPCs.
Vpcs []types.Vpc
// Metadata pertaining to the operation's result.
ResultMetadata middleware.Metadata
noSmithyDocumentSerde
}
func (c *Client) addOperationDescribeVpcsMiddlewares(stack *middleware.Stack, options Options) (err error) {
err = stack.Serialize.Add(&awsEc2query_serializeOpDescribeVpcs{}, middleware.After)
if err != nil {
return err
}
err = stack.Deserialize.Add(&awsEc2query_deserializeOpDescribeVpcs{}, 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_opDescribeVpcs(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
}
// DescribeVpcsAPIClient is a client that implements the DescribeVpcs operation.
type DescribeVpcsAPIClient interface {
DescribeVpcs(context.Context, *DescribeVpcsInput, ...func(*Options)) (*DescribeVpcsOutput, error)
}
var _ DescribeVpcsAPIClient = (*Client)(nil)
// DescribeVpcsPaginatorOptions is the paginator options for DescribeVpcs
type DescribeVpcsPaginatorOptions struct {
// The maximum number of results to return with a single call. To retrieve the
// remaining results, make another call with the returned nextToken value.
Limit int32
// Set to true if pagination should stop if the service returns a pagination token
// that matches the most recent token provided to the service.
StopOnDuplicateToken bool
}
// DescribeVpcsPaginator is a paginator for DescribeVpcs
type DescribeVpcsPaginator struct {
options DescribeVpcsPaginatorOptions
client DescribeVpcsAPIClient
params *DescribeVpcsInput
nextToken *string
firstPage bool
}
// NewDescribeVpcsPaginator returns a new DescribeVpcsPaginator
func NewDescribeVpcsPaginator(client DescribeVpcsAPIClient, params *DescribeVpcsInput, optFns ...func(*DescribeVpcsPaginatorOptions)) *DescribeVpcsPaginator {
if params == nil {
params = &DescribeVpcsInput{}
}
options := DescribeVpcsPaginatorOptions{}
if params.MaxResults != nil {
options.Limit = *params.MaxResults
}
for _, fn := range optFns {
fn(&options)
}
return &DescribeVpcsPaginator{
options: options,
client: client,
params: params,
firstPage: true,
nextToken: params.NextToken,
}
}
// HasMorePages returns a boolean indicating whether more pages are available
func (p *DescribeVpcsPaginator) HasMorePages() bool {
return p.firstPage || (p.nextToken != nil && len(*p.nextToken) != 0)
}
// NextPage retrieves the next DescribeVpcs page.
func (p *DescribeVpcsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*DescribeVpcsOutput, error) {
if !p.HasMorePages() {
return nil, fmt.Errorf("no more pages available")
}
params := *p.params
params.NextToken = p.nextToken
var limit *int32
if p.options.Limit > 0 {
limit = &p.options.Limit
}
params.MaxResults = limit
result, err := p.client.DescribeVpcs(ctx, ¶ms, optFns...)
if err != nil {
return nil, err
}
p.firstPage = false
prevToken := p.nextToken
p.nextToken = result.NextToken
if p.options.StopOnDuplicateToken &&
prevToken != nil &&
p.nextToken != nil &&
*prevToken == *p.nextToken {
p.nextToken = nil
}
return result, nil
}
// VpcAvailableWaiterOptions are waiter options for VpcAvailableWaiter
type VpcAvailableWaiterOptions 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,
// VpcAvailableWaiter 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, VpcAvailableWaiter 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, *DescribeVpcsInput, *DescribeVpcsOutput, error) (bool, error)
}
// VpcAvailableWaiter defines the waiters for VpcAvailable
type VpcAvailableWaiter struct {
client DescribeVpcsAPIClient
options VpcAvailableWaiterOptions
}
// NewVpcAvailableWaiter constructs a VpcAvailableWaiter.
func NewVpcAvailableWaiter(client DescribeVpcsAPIClient, optFns ...func(*VpcAvailableWaiterOptions)) *VpcAvailableWaiter {
options := VpcAvailableWaiterOptions{}
options.MinDelay = 15 * time.Second
options.MaxDelay = 120 * time.Second
options.Retryable = vpcAvailableStateRetryable
for _, fn := range optFns {
fn(&options)
}
return &VpcAvailableWaiter{
client: client,
options: options,
}
}
// Wait calls the waiter function for VpcAvailable waiter. The maxWaitDur is the
// maximum wait duration the waiter will wait. The maxWaitDur is required and must
// be greater than zero.
func (w *VpcAvailableWaiter) Wait(ctx context.Context, params *DescribeVpcsInput, maxWaitDur time.Duration, optFns ...func(*VpcAvailableWaiterOptions)) error {
_, err := w.WaitForOutput(ctx, params, maxWaitDur, optFns...)
return err
}
// WaitForOutput calls the waiter function for VpcAvailable 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 *VpcAvailableWaiter) WaitForOutput(ctx context.Context, params *DescribeVpcsInput, maxWaitDur time.Duration, optFns ...func(*VpcAvailableWaiterOptions)) (*DescribeVpcsOutput, 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.DescribeVpcs(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 VpcAvailable waiter")
}
func vpcAvailableStateRetryable(ctx context.Context, input *DescribeVpcsInput, output *DescribeVpcsOutput, err error) (bool, error) {
if err == nil {
pathValue, err := jmespath.Search("Vpcs[].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.(types.VpcState)
if !ok {
return false, fmt.Errorf("waiter comparator expected types.VpcState value, got %T", pathValue)
}
if string(value) != expectedValue {
match = false
}
}
if match {
return false, nil
}
}
return true, nil
}
// VpcExistsWaiterOptions are waiter options for VpcExistsWaiter
type VpcExistsWaiterOptions 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,
// VpcExistsWaiter will use default minimum delay of 1 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, VpcExistsWaiter 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, *DescribeVpcsInput, *DescribeVpcsOutput, error) (bool, error)
}
// VpcExistsWaiter defines the waiters for VpcExists
type VpcExistsWaiter struct {
client DescribeVpcsAPIClient
options VpcExistsWaiterOptions
}
// NewVpcExistsWaiter constructs a VpcExistsWaiter.
func NewVpcExistsWaiter(client DescribeVpcsAPIClient, optFns ...func(*VpcExistsWaiterOptions)) *VpcExistsWaiter {
options := VpcExistsWaiterOptions{}
options.MinDelay = 1 * time.Second
options.MaxDelay = 120 * time.Second
options.Retryable = vpcExistsStateRetryable
for _, fn := range optFns {
fn(&options)
}
return &VpcExistsWaiter{
client: client,
options: options,
}
}
// Wait calls the waiter function for VpcExists waiter. The maxWaitDur is the
// maximum wait duration the waiter will wait. The maxWaitDur is required and must
// be greater than zero.
func (w *VpcExistsWaiter) Wait(ctx context.Context, params *DescribeVpcsInput, maxWaitDur time.Duration, optFns ...func(*VpcExistsWaiterOptions)) error {
_, err := w.WaitForOutput(ctx, params, maxWaitDur, optFns...)
return err
}
// WaitForOutput calls the waiter function for VpcExists 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 *VpcExistsWaiter) WaitForOutput(ctx context.Context, params *DescribeVpcsInput, maxWaitDur time.Duration, optFns ...func(*VpcExistsWaiterOptions)) (*DescribeVpcsOutput, 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.DescribeVpcs(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 VpcExists waiter")
}
func vpcExistsStateRetryable(ctx context.Context, input *DescribeVpcsInput, output *DescribeVpcsOutput, err error) (bool, error) {
if err == nil {
return false, nil
}
if err != nil {
var apiErr smithy.APIError
ok := errors.As(err, &apiErr)
if !ok {
return false, fmt.Errorf("expected err to be of type smithy.APIError, got %w", err)
}
if "InvalidVpcID.NotFound" == apiErr.ErrorCode() {
return true, nil
}
}
return true, nil
}
func newServiceMetadataMiddleware_opDescribeVpcs(region string) *awsmiddleware.RegisterServiceMetadata {
return &awsmiddleware.RegisterServiceMetadata{
Region: region,
ServiceID: ServiceID,
SigningName: "ec2",
OperationName: "DescribeVpcs",
}
}