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// Code generated by smithy-go-codegen DO NOT EDIT.
package iotdataplane
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/iotdataplane/types"
"github.com/aws/smithy-go/middleware"
smithyhttp "github.com/aws/smithy-go/transport/http"
)
// Publishes an MQTT message. Requires permission to access the Publish (https://docs.aws.amazon.com/service-authorization/latest/reference/list_awsiot.html#awsiot-actions-as-permissions)
// action. For more information about MQTT messages, see MQTT Protocol (http://docs.aws.amazon.com/iot/latest/developerguide/mqtt.html)
// in the IoT Developer Guide. For more information about messaging costs, see
// Amazon Web Services IoT Core pricing - Messaging (http://aws.amazon.com/iot-core/pricing/#Messaging)
// .
func (c *Client) Publish(ctx context.Context, params *PublishInput, optFns ...func(*Options)) (*PublishOutput, error) {
if params == nil {
params = &PublishInput{}
}
result, metadata, err := c.invokeOperation(ctx, "Publish", params, optFns, c.addOperationPublishMiddlewares)
if err != nil {
return nil, err
}
out := result.(*PublishOutput)
out.ResultMetadata = metadata
return out, nil
}
// The input for the Publish operation.
type PublishInput struct {
// The name of the MQTT topic.
//
// This member is required.
Topic *string
// A UTF-8 encoded string that describes the content of the publishing message.
ContentType *string
// The base64-encoded binary data used by the sender of the request message to
// identify which request the response message is for when it's received.
// correlationData is an HTTP header value in the API.
CorrelationData *string
// A user-defined integer value that represents the message expiry interval in
// seconds. If absent, the message doesn't expire. For more information about the
// limits of messageExpiry , see Amazon Web Services IoT Core message broker and
// protocol limits and quotas (https://docs.aws.amazon.com/general/latest/gr/iot-core.html#message-broker-limits)
// from the Amazon Web Services Reference Guide.
MessageExpiry int64
// The message body. MQTT accepts text, binary, and empty (null) message payloads.
// Publishing an empty (null) payload with retain = true deletes the retained
// message identified by topic from Amazon Web Services IoT Core.
Payload []byte
// An Enum string value that indicates whether the payload is formatted as UTF-8.
// payloadFormatIndicator is an HTTP header value in the API.
PayloadFormatIndicator types.PayloadFormatIndicator
// The Quality of Service (QoS) level. The default QoS level is 0.
Qos int32
// A UTF-8 encoded string that's used as the topic name for a response message.
// The response topic is used to describe the topic which the receiver should
// publish to as part of the request-response flow. The topic must not contain
// wildcard characters.
ResponseTopic *string
// A Boolean value that determines whether to set the RETAIN flag when the message
// is published. Setting the RETAIN flag causes the message to be retained and sent
// to new subscribers to the topic. Valid values: true | false Default value: false
Retain bool
// A JSON string that contains an array of JSON objects. If you don’t use Amazon
// Web Services SDK or CLI, you must encode the JSON string to base64 format before
// adding it to the HTTP header. userProperties is an HTTP header value in the
// API. The following example userProperties parameter is a JSON string which
// represents two User Properties. Note that it needs to be base64-encoded:
// [{"deviceName": "alpha"}, {"deviceCnt": "45"}]
//
// This value conforms to the media type: application/json
UserProperties *string
noSmithyDocumentSerde
}
type PublishOutput struct {
// Metadata pertaining to the operation's result.
ResultMetadata middleware.Metadata
noSmithyDocumentSerde
}
func (c *Client) addOperationPublishMiddlewares(stack *middleware.Stack, options Options) (err error) {
if err := stack.Serialize.Add(&setOperationInputMiddleware{}, middleware.After); err != nil {
return err
}
err = stack.Serialize.Add(&awsRestjson1_serializeOpPublish{}, middleware.After)
if err != nil {
return err
}
err = stack.Deserialize.Add(&awsRestjson1_deserializeOpPublish{}, middleware.After)
if err != nil {
return err
}
if err := addProtocolFinalizerMiddlewares(stack, options, "Publish"); 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 = addOpPublishValidationMiddleware(stack); err != nil {
return err
}
if err = stack.Initialize.Add(newServiceMetadataMiddleware_opPublish(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
}
func newServiceMetadataMiddleware_opPublish(region string) *awsmiddleware.RegisterServiceMetadata {
return &awsmiddleware.RegisterServiceMetadata{
Region: region,
ServiceID: ServiceID,
OperationName: "Publish",
}
}
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