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api_op_DescribeLogStreams.go
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api_op_DescribeLogStreams.go
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// Code generated by smithy-go-codegen DO NOT EDIT.
package cloudwatchlogs
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/cloudwatchlogs/types"
"github.com/aws/smithy-go/middleware"
smithyhttp "github.com/aws/smithy-go/transport/http"
)
// Lists the log streams for the specified log group. You can list all the log
// streams or filter the results by prefix. You can also control how the results
// are ordered. You can specify the log group to search by using either
// logGroupIdentifier or logGroupName . You must include one of these two
// parameters, but you can't include both. This operation has a limit of five
// transactions per second, after which transactions are throttled. If you are
// using CloudWatch cross-account observability, you can use this operation in a
// monitoring account and view data from the linked source accounts. For more
// information, see CloudWatch cross-account observability (https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Unified-Cross-Account.html)
// .
func (c *Client) DescribeLogStreams(ctx context.Context, params *DescribeLogStreamsInput, optFns ...func(*Options)) (*DescribeLogStreamsOutput, error) {
if params == nil {
params = &DescribeLogStreamsInput{}
}
result, metadata, err := c.invokeOperation(ctx, "DescribeLogStreams", params, optFns, c.addOperationDescribeLogStreamsMiddlewares)
if err != nil {
return nil, err
}
out := result.(*DescribeLogStreamsOutput)
out.ResultMetadata = metadata
return out, nil
}
type DescribeLogStreamsInput struct {
// If the value is true, results are returned in descending order. If the value is
// to false, results are returned in ascending order. The default value is false.
Descending *bool
// The maximum number of items returned. If you don't specify a value, the default
// is up to 50 items.
Limit *int32
// Specify either the name or ARN of the log group to view. If the log group is in
// a source account and you are using a monitoring account, you must use the log
// group ARN. You must include either logGroupIdentifier or logGroupName , but not
// both.
LogGroupIdentifier *string
// The name of the log group. You must include either logGroupIdentifier or
// logGroupName , but not both.
LogGroupName *string
// The prefix to match. If orderBy is LastEventTime , you cannot specify this
// parameter.
LogStreamNamePrefix *string
// The token for the next set of items to return. (You received this token from a
// previous call.)
NextToken *string
// If the value is LogStreamName , the results are ordered by log stream name. If
// the value is LastEventTime , the results are ordered by the event time. The
// default value is LogStreamName . If you order the results by event time, you
// cannot specify the logStreamNamePrefix parameter. lastEventTimestamp represents
// the time of the most recent log event in the log stream in CloudWatch Logs. This
// number is expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC
// . lastEventTimestamp updates on an eventual consistency basis. It typically
// updates in less than an hour from ingestion, but in rare situations might take
// longer.
OrderBy types.OrderBy
noSmithyDocumentSerde
}
type DescribeLogStreamsOutput struct {
// The log streams.
LogStreams []types.LogStream
// The token for the next set of items to return. The token expires after 24 hours.
NextToken *string
// Metadata pertaining to the operation's result.
ResultMetadata middleware.Metadata
noSmithyDocumentSerde
}
func (c *Client) addOperationDescribeLogStreamsMiddlewares(stack *middleware.Stack, options Options) (err error) {
if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
return err
}
err = stack.Serialize.Add(&awsAwsjson11_serializeOpDescribeLogStreams{}, middleware.After)
if err != nil {
return err
}
err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpDescribeLogStreams{}, middleware.After)
if err != nil {
return err
}
if err := addProtocolFinalizerMiddlewares(stack, options, "DescribeLogStreams"); err != nil {
return fmt.Errorf("add protocol finalizers: %v", err)
}
if err = addlegacyEndpointContextSetter(stack, options); 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 = awsmiddleware.AddRawResponseToMetadata(stack); err != nil {
return err
}
if err = awsmiddleware.AddRecordResponseTiming(stack); err != nil {
return err
}
if err = addClientUserAgent(stack, options); err != nil {
return err
}
if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
return err
}
if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
return err
}
if err = addSetLegacyContextSigningOptionsMiddleware(stack); err != nil {
return err
}
if err = stack.Initialize.Add(newServiceMetadataMiddleware_opDescribeLogStreams(options.Region), middleware.Before); err != nil {
return err
}
if err = awsmiddleware.AddRecursionDetection(stack); 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
}
if err = addDisableHTTPSMiddleware(stack, options); err != nil {
return err
}
return nil
}
// DescribeLogStreamsAPIClient is a client that implements the DescribeLogStreams
// operation.
type DescribeLogStreamsAPIClient interface {
DescribeLogStreams(context.Context, *DescribeLogStreamsInput, ...func(*Options)) (*DescribeLogStreamsOutput, error)
}
var _ DescribeLogStreamsAPIClient = (*Client)(nil)
// DescribeLogStreamsPaginatorOptions is the paginator options for
// DescribeLogStreams
type DescribeLogStreamsPaginatorOptions struct {
// The maximum number of items returned. If you don't specify a value, the default
// is up to 50 items.
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
}
// DescribeLogStreamsPaginator is a paginator for DescribeLogStreams
type DescribeLogStreamsPaginator struct {
options DescribeLogStreamsPaginatorOptions
client DescribeLogStreamsAPIClient
params *DescribeLogStreamsInput
nextToken *string
firstPage bool
}
// NewDescribeLogStreamsPaginator returns a new DescribeLogStreamsPaginator
func NewDescribeLogStreamsPaginator(client DescribeLogStreamsAPIClient, params *DescribeLogStreamsInput, optFns ...func(*DescribeLogStreamsPaginatorOptions)) *DescribeLogStreamsPaginator {
if params == nil {
params = &DescribeLogStreamsInput{}
}
options := DescribeLogStreamsPaginatorOptions{}
if params.Limit != nil {
options.Limit = *params.Limit
}
for _, fn := range optFns {
fn(&options)
}
return &DescribeLogStreamsPaginator{
options: options,
client: client,
params: params,
firstPage: true,
nextToken: params.NextToken,
}
}
// HasMorePages returns a boolean indicating whether more pages are available
func (p *DescribeLogStreamsPaginator) HasMorePages() bool {
return p.firstPage || (p.nextToken != nil && len(*p.nextToken) != 0)
}
// NextPage retrieves the next DescribeLogStreams page.
func (p *DescribeLogStreamsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*DescribeLogStreamsOutput, 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.Limit = limit
result, err := p.client.DescribeLogStreams(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
}
func newServiceMetadataMiddleware_opDescribeLogStreams(region string) *awsmiddleware.RegisterServiceMetadata {
return &awsmiddleware.RegisterServiceMetadata{
Region: region,
ServiceID: ServiceID,
OperationName: "DescribeLogStreams",
}
}