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public.go
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public.go
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package pubsub
// Publish published on the client
func (c *Client) Publish(topicARN string, message interface{}, messageAttributes map[string]interface{}) error {
mw := chainPublisherMiddleware(c.Middleware...)
return mw(c.ServiceName, func(topicARN string, message interface{}, messageAttributes map[string]interface{}) error {
return c.Provider.Publish(topicARN, message, messageAttributes)
})(topicARN, message, messageAttributes)
}
func chainPublisherMiddleware(mw ...Middleware) func(serviceName string, next PublishHandler) PublishHandler {
return func(serviceName string, final PublishHandler) PublishHandler {
return func(topicARN string, message interface{}, messageAttributes map[string]interface{}) error {
last := final
for i := len(mw) - 1; i >= 0; i-- {
last = mw[i].PublisherMsgInterceptor(serviceName, last)
}
return last(topicARN, message, messageAttributes)
}
}
}