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Use HTTP 404 & forward Cache-Control, Content-Type, Expires, and Last-Modified headers from S3. #158

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Use HTTP 404 & forward Cache-Control, Content-Type, Expires, and Last-Modified headers from S3. #158

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088a5b9
Forward Expires and Last-Modified headers from S3.
john-shaffer Oct 23, 2019
5eb5c87
Forward Content-Type header from S3.
john-shaffer Oct 23, 2019
03a6e5b
Use HTTP 404 status code for non-existent files.
john-shaffer Oct 24, 2019
8393774
Apply Flythe's fix to formatting of datetimes in HTTP headers.
john-shaffer Nov 6, 2019
8d7e2a5
Merge branch 'master' of https://github.com/john-shaffer/serverless-i…
john-shaffer Nov 6, 2019
592cd16
Froward headers
vitalinfo Dec 20, 2019
74de982
Added conditions
vitalinfo Dec 20, 2019
502e1a0
Merge https://github.com/vitalinfo/serverless-image-handler
john-shaffer Dec 20, 2019
1176fd4
Only set ContentType and CacheControl on ImageRequest when they are d…
john-shaffer Dec 20, 2019
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4 changes: 3 additions & 1 deletion source/image-handler/image-request.js
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Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,8 @@ class ImageRequest {
const request = s3.getObject(imageLocation).promise();
try {
const originalImage = await request;
this.Expires = originalImage.Expires;
this.LastModified = originalImage.LastModified;
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@Flythe Flythe Nov 6, 2019

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I've tried this fix and the s3.getObject() call returns an invalid date format (e.g. 2019-11-06T21:36:00.000z). Added the following to change into a valid HTTP header format.

const formattedLastModified = new Date(originalImage.LastModified).toUTCString();

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@john-shaffer john-shaffer Nov 6, 2019

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Thanks. I noticed this, but hadn't had time to investigate it. That fix is in the pull request now.

return Promise.resolve(originalImage.Body);
}
catch(err) {
Expand Down Expand Up @@ -235,4 +237,4 @@ class ImageRequest {
}

// Exports
module.exports = ImageRequest;
module.exports = ImageRequest;
7 changes: 5 additions & 2 deletions source/image-handler/index.js
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Expand Up @@ -22,9 +22,12 @@ exports.handler = async (event) => {
const request = await imageRequest.setup(event);
console.log(request);
const processedRequest = await imageHandler.process(request);
const headers = getResponseHeaders();
headers["Expires"] = request.Expires;
headers["Last-Modified"] = request.LastModified;
const response = {
"statusCode": 200,
"headers" : getResponseHeaders(),
"headers" : headers,
"body": processedRequest,
"isBase64Encoded": true
}
Expand Down Expand Up @@ -61,4 +64,4 @@ const getResponseHeaders = (isErr) => {
headers["Content-Type"] = "application/json"
}
return headers;
}
}