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model: sns: Add union type 

The `model::sns::Message` enumeration provides a mechanism for
deserializing a JSON document into the correct type.  It will be used by
the HTTP operation that receives messages from SNS in order to determine
the correct action to take in response to the message.
master
Dustin 2022-09-03 22:57:07 -05:00
parent 196a43c49c
commit 3ce72623e6
2 changed files with 16 additions and 9 deletions
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19
src/model/sns.rs
View File

@ -6,6 +6,19 @@
//! [0]: https://docs.aws.amazon.com/sns/latest/dg/sns-message-and-json-formats.html //! [0]: https://docs.aws.amazon.com/sns/latest/dg/sns-message-and-json-formats.html
use serde::Deserialize; use serde::Deserialize;
/// Union for all known SNS message types
///
/// This type can be used to deserialize an arbitrary SNS message into the
/// appropriate type, based on the value of the `Type` field in the JSON
/// document.
#[derive(Deserialize)]
#[serde(tag = "Type")]
pub enum Message {
SubscriptionConfirmation(SubscriptionConfirmationMessage),
UnsubscribeConfirmation(UnsubscribeConfirmationMessage),
Notification(NotificationMessage),
}
/// SNS Subscription confirmation message /// SNS Subscription confirmation message
/// ///
/// See also: [HTTP/HTTPS subscription confirmation JSON format][0] /// See also: [HTTP/HTTPS subscription confirmation JSON format][0]
@ -14,8 +27,6 @@ use serde::Deserialize;
#[derive(Deserialize)] #[derive(Deserialize)]
#[serde(rename_all = "PascalCase")] #[serde(rename_all = "PascalCase")]
pub struct SubscriptionConfirmationMessage { pub struct SubscriptionConfirmationMessage {
#[serde(rename = "Type")]
pub message_type: String,
#[serde(rename = "MessageId")] #[serde(rename = "MessageId")]
pub message_id: String, pub message_id: String,
pub token: String, pub token: String,
@ -38,8 +49,6 @@ pub struct SubscriptionConfirmationMessage {
#[derive(Deserialize)] #[derive(Deserialize)]
#[serde(rename_all = "PascalCase")] #[serde(rename_all = "PascalCase")]
pub struct NotificationMessage { pub struct NotificationMessage {
#[serde(rename = "Type")]
pub message_type: String,
#[serde(rename = "MessageId")] #[serde(rename = "MessageId")]
pub message_id: String, pub message_id: String,
pub topic_arn: String, pub topic_arn: String,
@ -61,8 +70,6 @@ pub struct NotificationMessage {
#[derive(Deserialize)] #[derive(Deserialize)]
#[serde(rename_all = "PascalCase")] #[serde(rename_all = "PascalCase")]
pub struct UnsubscribeConfirmationMessage { pub struct UnsubscribeConfirmationMessage {
#[serde(rename = "Type")]
pub message_type: String,
#[serde(rename = "MessageId")] #[serde(rename = "MessageId")]
pub message_id: String, pub message_id: String,
pub token: String, pub token: String,

6
src/sns/sig.rs
View File

@ -171,7 +171,7 @@ impl SignatureVerifier for SubscriptionConfirmationMessage {
s.push_str(&self.topic_arn); s.push_str(&self.topic_arn);
s.push('\n'); s.push('\n');
s.push_str("Type\n"); s.push_str("Type\n");
s.push_str(&self.message_type); s.push_str("SubscriptionConfirmation");
s.push('\n'); s.push('\n');
s s
} }
@ -206,7 +206,7 @@ impl SignatureVerifier for NotificationMessage {
s.push_str(&self.topic_arn); s.push_str(&self.topic_arn);
s.push('\n'); s.push('\n');
s.push_str("Type\n"); s.push_str("Type\n");
s.push_str(&self.message_type); s.push_str("Notification");
s.push('\n'); s.push('\n');
s s
} }
@ -242,7 +242,7 @@ impl SignatureVerifier for UnsubscribeConfirmationMessage {
s.push_str(&self.topic_arn); s.push_str(&self.topic_arn);
s.push('\n'); s.push('\n');
s.push_str("Type\n"); s.push_str("Type\n");
s.push_str(&self.message_type); s.push_str("UnsubscribeConfirmation");
s.push('\n'); s.push('\n');
s s
} }