1// Code generated by smithy-go-codegen DO NOT EDIT.
2
3package databasemigrationservice
4
5import (
6	"context"
7	"fmt"
8	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
9	"github.com/aws/aws-sdk-go-v2/aws/signer/v4"
10	"github.com/aws/aws-sdk-go-v2/service/databasemigrationservice/types"
11	"github.com/aws/smithy-go/middleware"
12	smithyhttp "github.com/aws/smithy-go/transport/http"
13)
14
15// Lists all the event subscriptions for a customer account. The description of a
16// subscription includes SubscriptionName, SNSTopicARN, CustomerID, SourceType,
17// SourceID, CreationTime, and Status. If you specify SubscriptionName, this action
18// lists the description for that subscription.
19func (c *Client) DescribeEventSubscriptions(ctx context.Context, params *DescribeEventSubscriptionsInput, optFns ...func(*Options)) (*DescribeEventSubscriptionsOutput, error) {
20	if params == nil {
21		params = &DescribeEventSubscriptionsInput{}
22	}
23
24	result, metadata, err := c.invokeOperation(ctx, "DescribeEventSubscriptions", params, optFns, addOperationDescribeEventSubscriptionsMiddlewares)
25	if err != nil {
26		return nil, err
27	}
28
29	out := result.(*DescribeEventSubscriptionsOutput)
30	out.ResultMetadata = metadata
31	return out, nil
32}
33
34//
35type DescribeEventSubscriptionsInput struct {
36
37	// Filters applied to event subscriptions.
38	Filters []types.Filter
39
40	// An optional pagination token provided by a previous request. If this parameter
41	// is specified, the response includes only records beyond the marker, up to the
42	// value specified by MaxRecords.
43	Marker *string
44
45	// The maximum number of records to include in the response. If more records exist
46	// than the specified MaxRecords value, a pagination token called a marker is
47	// included in the response so that the remaining results can be retrieved.
48	// Default: 100 Constraints: Minimum 20, maximum 100.
49	MaxRecords *int32
50
51	// The name of the AWS DMS event subscription to be described.
52	SubscriptionName *string
53}
54
55//
56type DescribeEventSubscriptionsOutput struct {
57
58	// A list of event subscriptions.
59	EventSubscriptionsList []types.EventSubscription
60
61	// An optional pagination token provided by a previous request. If this parameter
62	// is specified, the response includes only records beyond the marker, up to the
63	// value specified by MaxRecords.
64	Marker *string
65
66	// Metadata pertaining to the operation's result.
67	ResultMetadata middleware.Metadata
68}
69
70func addOperationDescribeEventSubscriptionsMiddlewares(stack *middleware.Stack, options Options) (err error) {
71	err = stack.Serialize.Add(&awsAwsjson11_serializeOpDescribeEventSubscriptions{}, middleware.After)
72	if err != nil {
73		return err
74	}
75	err = stack.Deserialize.Add(&awsAwsjson11_deserializeOpDescribeEventSubscriptions{}, middleware.After)
76	if err != nil {
77		return err
78	}
79	if err = addSetLoggerMiddleware(stack, options); err != nil {
80		return err
81	}
82	if err = awsmiddleware.AddClientRequestIDMiddleware(stack); err != nil {
83		return err
84	}
85	if err = smithyhttp.AddComputeContentLengthMiddleware(stack); err != nil {
86		return err
87	}
88	if err = addResolveEndpointMiddleware(stack, options); err != nil {
89		return err
90	}
91	if err = v4.AddComputePayloadSHA256Middleware(stack); err != nil {
92		return err
93	}
94	if err = addRetryMiddlewares(stack, options); err != nil {
95		return err
96	}
97	if err = addHTTPSignerV4Middleware(stack, options); err != nil {
98		return err
99	}
100	if err = awsmiddleware.AddRawResponseToMetadata(stack); err != nil {
101		return err
102	}
103	if err = awsmiddleware.AddRecordResponseTiming(stack); err != nil {
104		return err
105	}
106	if err = addClientUserAgent(stack); err != nil {
107		return err
108	}
109	if err = smithyhttp.AddErrorCloseResponseBodyMiddleware(stack); err != nil {
110		return err
111	}
112	if err = smithyhttp.AddCloseResponseBodyMiddleware(stack); err != nil {
113		return err
114	}
115	if err = addOpDescribeEventSubscriptionsValidationMiddleware(stack); err != nil {
116		return err
117	}
118	if err = stack.Initialize.Add(newServiceMetadataMiddleware_opDescribeEventSubscriptions(options.Region), middleware.Before); err != nil {
119		return err
120	}
121	if err = addRequestIDRetrieverMiddleware(stack); err != nil {
122		return err
123	}
124	if err = addResponseErrorMiddleware(stack); err != nil {
125		return err
126	}
127	if err = addRequestResponseLogging(stack, options); err != nil {
128		return err
129	}
130	return nil
131}
132
133// DescribeEventSubscriptionsAPIClient is a client that implements the
134// DescribeEventSubscriptions operation.
135type DescribeEventSubscriptionsAPIClient interface {
136	DescribeEventSubscriptions(context.Context, *DescribeEventSubscriptionsInput, ...func(*Options)) (*DescribeEventSubscriptionsOutput, error)
137}
138
139var _ DescribeEventSubscriptionsAPIClient = (*Client)(nil)
140
141// DescribeEventSubscriptionsPaginatorOptions is the paginator options for
142// DescribeEventSubscriptions
143type DescribeEventSubscriptionsPaginatorOptions struct {
144	// The maximum number of records to include in the response. If more records exist
145	// than the specified MaxRecords value, a pagination token called a marker is
146	// included in the response so that the remaining results can be retrieved.
147	// Default: 100 Constraints: Minimum 20, maximum 100.
148	Limit int32
149
150	// Set to true if pagination should stop if the service returns a pagination token
151	// that matches the most recent token provided to the service.
152	StopOnDuplicateToken bool
153}
154
155// DescribeEventSubscriptionsPaginator is a paginator for
156// DescribeEventSubscriptions
157type DescribeEventSubscriptionsPaginator struct {
158	options   DescribeEventSubscriptionsPaginatorOptions
159	client    DescribeEventSubscriptionsAPIClient
160	params    *DescribeEventSubscriptionsInput
161	nextToken *string
162	firstPage bool
163}
164
165// NewDescribeEventSubscriptionsPaginator returns a new
166// DescribeEventSubscriptionsPaginator
167func NewDescribeEventSubscriptionsPaginator(client DescribeEventSubscriptionsAPIClient, params *DescribeEventSubscriptionsInput, optFns ...func(*DescribeEventSubscriptionsPaginatorOptions)) *DescribeEventSubscriptionsPaginator {
168	if params == nil {
169		params = &DescribeEventSubscriptionsInput{}
170	}
171
172	options := DescribeEventSubscriptionsPaginatorOptions{}
173	if params.MaxRecords != nil {
174		options.Limit = *params.MaxRecords
175	}
176
177	for _, fn := range optFns {
178		fn(&options)
179	}
180
181	return &DescribeEventSubscriptionsPaginator{
182		options:   options,
183		client:    client,
184		params:    params,
185		firstPage: true,
186	}
187}
188
189// HasMorePages returns a boolean indicating whether more pages are available
190func (p *DescribeEventSubscriptionsPaginator) HasMorePages() bool {
191	return p.firstPage || p.nextToken != nil
192}
193
194// NextPage retrieves the next DescribeEventSubscriptions page.
195func (p *DescribeEventSubscriptionsPaginator) NextPage(ctx context.Context, optFns ...func(*Options)) (*DescribeEventSubscriptionsOutput, error) {
196	if !p.HasMorePages() {
197		return nil, fmt.Errorf("no more pages available")
198	}
199
200	params := *p.params
201	params.Marker = p.nextToken
202
203	var limit *int32
204	if p.options.Limit > 0 {
205		limit = &p.options.Limit
206	}
207	params.MaxRecords = limit
208
209	result, err := p.client.DescribeEventSubscriptions(ctx, &params, optFns...)
210	if err != nil {
211		return nil, err
212	}
213	p.firstPage = false
214
215	prevToken := p.nextToken
216	p.nextToken = result.Marker
217
218	if p.options.StopOnDuplicateToken && prevToken != nil && p.nextToken != nil && *prevToken == *p.nextToken {
219		p.nextToken = nil
220	}
221
222	return result, nil
223}
224
225func newServiceMetadataMiddleware_opDescribeEventSubscriptions(region string) *awsmiddleware.RegisterServiceMetadata {
226	return &awsmiddleware.RegisterServiceMetadata{
227		Region:        region,
228		ServiceID:     ServiceID,
229		SigningName:   "dms",
230		OperationName: "DescribeEventSubscriptions",
231	}
232}
233