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Lambda to allow gif types #1143

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merged 2 commits into from
Oct 17, 2024
Merged

Lambda to allow gif types #1143

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546f976
Update to allow gif types
NiallJoeMaher Oct 17, 2024
ad9bb3d
Update cdk/lambdas/uploadResize/index.js
NiallJoeMaher Oct 17, 2024
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13 changes: 5 additions & 8 deletions cdk/lambdas/avatarResize/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -11,8 +11,6 @@ exports.handler = async (event) => {
const bucket = event.Records[0].s3.bucket.name;
const key = event.Records[0].s3.object.key;

console.log({ bucket, key });

try {
// Check if the image has already been resized
const headParams = {
Expand All @@ -21,10 +19,10 @@ exports.handler = async (event) => {
};

const headResponse = await s3.send(new HeadObjectCommand(headParams));
const metadata = headResponse.Metadata || {};
const s3Metadata = headResponse.Metadata || {};
const contentType = headResponse.ContentType;

if (metadata.resized === "true") {
if (s3Metadata.resized === "true") {
return {
statusCode: 200,
body: JSON.stringify({ message: "Image already resized. Skipping." }),
Expand All @@ -39,14 +37,13 @@ exports.handler = async (event) => {

const response = await s3.send(new GetObjectCommand(getParams));
const stream = response.Body;
console.log({ response, stream });

if (!stream) throw new Error("BodyStream is empty");

const imageBuffer = Buffer.concat(await stream.toArray());
const sharpImage = sharp(imageBuffer);

// Resize the image
const resizedImageBuffer = await sharpImage
const resizedImageBuffer = await sharp(imageBuffer)
.resize({ width: 220, height: 220, fit: "cover" })
.toBuffer();

Expand All @@ -56,7 +53,7 @@ exports.handler = async (event) => {
Bucket: bucket,
Key: key,
Body: resizedImageBuffer,
Metadata: { ...metadata, resized: "true" },
Metadata: { ...s3Metadata, resized: "true" },
ContentType: contentType,
}),
);
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28 changes: 22 additions & 6 deletions cdk/lambdas/uploadResize/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -61,32 +61,48 @@ exports.handler = async (event) => {

const imageRaw = Buffer.concat(await stream.toArray());

// Determine the image format
const imageMetadata = await sharp(imageRaw).metadata();
const isGif = imageMetadata.format === "gif";

// Function to resize an image
const resizeImage = async (buffer, size) => {
return sharp(buffer)
.resize({
try {
const resizedImage = sharp(buffer).resize({
width: size.maxWidth,
height: size.maxHeight,
fit: "inside",
withoutEnlargement: false,
})
.webp({ quality: 80 })
.toBuffer();
});

if (isGif) {
return resizedImage.gif().toBuffer();
} else {
return resizedImage.webp({ quality: 80 }).toBuffer();
}
} catch (error) {
console.error(`Error resizing image to ${size.maxWidth}x${size.maxHeight}:`, error);
throw error;
}
};

// Loop through sizes and upload each resized image
for (const size of sizes) {
const resizedImage = await resizeImage(imageRaw, size);

const resizedKey = size.suffix
? key.replace(/(\.[\w\d_-]+)$/i, `_${size.suffix}$1`)
? key.replace(
/(\.[\w\d_-]+)$/i,
`_${size.suffix}${isGif ? ".gif" : ".webp"}`,
)
Comment on lines +94 to +97
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🛠️ Refactor suggestion

⚠️ Potential issue

Use the Node.js path module for reliable file extension handling.

The regular expression used to replace the file extension may not handle all possible file names correctly, such as those without an extension or with multiple dots in their names. Using the built-in path module provides a more robust solution for handling file paths and extensions.

Modify your code to use the path module:

+const path = require("path");
...
 const resizedKey = size.suffix
   ? key.replace(
-      /(\.[\w\d_-]+)$/i,
-      `_${size.suffix}${isGif ? ".gif" : ".webp"}`,
+      path.extname(key),
+      `_${size.suffix}${isGif ? ".gif" : ".webp"}`
     )
   : key;

This change ensures that the file extension is accurately identified and replaced, regardless of the file name format.

Committable suggestion was skipped due to low confidence.

: key;

await s3.send(
new PutObjectCommand({
Bucket: bucket,
Key: resizedKey,
Body: resizedImage,
ContentType: isGif ? "image/gif" : "image/webp",
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🛠️ Refactor suggestion

Set appropriate Content-Encoding header for WebP images.

When serving WebP images, it's beneficial to include the Content-Encoding header to ensure proper handling by clients and proxies that support WebP compression.

Modify the PutObjectCommand parameters:

 await s3.send(
   new PutObjectCommand({
     Bucket: bucket,
     Key: resizedKey,
     Body: resizedImage,
     ContentType: isGif ? "image/gif" : "image/webp",
+    ContentEncoding: isGif ? undefined : "webp",
   }),
 );

This addition helps improve compatibility and performance with clients that support WebP.

📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
ContentType: isGif ? "image/gif" : "image/webp",
ContentType: isGif ? "image/gif" : "image/webp",
ContentEncoding: isGif ? undefined : "webp",

🛠️ Refactor suggestion

Set the correct Cache-Control header for optimized content delivery.

Setting appropriate cache headers can improve the performance of your application by enabling clients and intermediaries to cache the resized images. This reduces load on your server and decreases image load times for users.

Add the CacheControl parameter to your PutObjectCommand:

 await s3.send(
   new PutObjectCommand({
     Bucket: bucket,
     Key: resizedKey,
     Body: resizedImage,
     ContentType: isGif ? "image/gif" : "image/webp",
+    CacheControl: "max-age=31536000, public",
   }),
 );

This sets the cache to expire after one year (31536000 seconds), which is appropriate for versioned files that won't change.

📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
ContentType: isGif ? "image/gif" : "image/webp",
ContentType: isGif ? "image/gif" : "image/webp",
CacheControl: "max-age=31536000, public",

}),
);
}
Expand Down
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