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Set serverless examples to return directly the pass instead of uploading them on S3

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This commit is contained in:
Alexander Cerutti
2023-07-04 20:05:51 +02:00
parent e9fcf4b95b
commit 4ef2d46413
3 changed files with 29 additions and 26 deletions
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4
examples/serverless/README.md
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@@ -50,10 +50,10 @@ All the examples, except fields ones, require a `modelName` to be passed in quer
Pass in queryString all the pass props you want to apply them to the final result.
| Example name | Endpoint name | Additional notes |
| -------------- | ----------------- | ----------------------------------------------------------------------------------------------------- |
| -------------- | ----------------- | --------------------------------------------------------------------------------------------------------------------------------- |
| localize | `/localize` | - |
| fields | `/fields` | - |
| expirationDate | `/expirationDate` | - |
| scratch | `/scratch` | - |
| barcodes | `/barcodes` | Using `?alt=true` query parameter, will lead to barcode string message usage instead of selected ones |
| pkpasses | `/pkpasses` | - |
| pkpasses | `/pkpasses` | This example shows how to upload the pkpasses file on S3, even if it is discouraged. It has been done just to share the knowledge |

9
examples/serverless/src/functions/pkpasses.ts
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@@ -120,6 +120,11 @@ export async function pkpasses(event: ALBEvent) {
const pkpasses = PKPass.pack(...passes);
/**
* Although the other passes are served as files, in this example
* we are uploading on s3 (local) just see how it works.
*/
const buffer = pkpasses.getAsBuffer();
const passName = `GeneratedPass-${Math.random()}.pkpasses`;
@@ -136,7 +141,7 @@ export async function pkpasses(event: ALBEvent) {
/**
* Please note that redirection to `Location` does not work
* if you open this code in another device if this is run
* if you open this code in another device if this is is running
* offline. This because `Location` is on localhost. Didn't
* find yet a way to solve this.
*/
@@ -145,7 +150,7 @@ export async function pkpasses(event: ALBEvent) {
statusCode: 302,
headers: {
"Content-Type": "application/vnd.apple.pkpass",
Location: Location,
Location,
},
};
}

30
examples/serverless/src/shared.ts
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@@ -148,7 +148,9 @@ export async function* createPassGenerator(
passOptions?: Object,
): AsyncGenerator<PKPass, ALBResult, PKPass> {
const [template, certificates, s3] = await Promise.all([
modelName ? getModel(modelName) : Promise.resolve({}),
modelName
? getModel(modelName)
: Promise.resolve({} as ReturnType<typeof getModel>),
getCertificates(),
getS3Instance(),
]);
@@ -175,18 +177,6 @@ export async function* createPassGenerator(
pass = yield pass;
const buffer = pass.getAsBuffer();
const passName = `GeneratedPass-${Math.random()}.pkpass`;
const { Location } = await s3
.upload({
Bucket: config.PASSES_S3_TEMP_BUCKET,
Key: passName,
ContentType: pass.mimeType,
/** Marking it as expiring in 5 minutes, because passes should not be stored */
Expires: new Date(Date.now() + 5 * 60 * 1000),
Body: buffer,
})
.promise();
/**
* Please note that redirection to `Location` does not work
@@ -196,10 +186,18 @@ export async function* createPassGenerator(
*/
return {
statusCode: 302,
statusCode: 200,
headers: {
"Content-Type": "application/vnd.apple.pkpass",
Location: Location,
"Content-Type": pass.mimeType,
},
/**
* It is required for the file to be served
* as base64, so it won't be altered in AWS.
*
* @see https://aws.amazon.com/it/blogs/compute/handling-binary-data-using-amazon-api-gateway-http-apis/
* "For the response path, API Gateway inspects the isBase64Encoding flag returned from Lambda."
*/
body: buffer.toString("base64"),
isBase64Encoded: true,
};
}