67 lines
1.9 KiB
Markdown
67 lines
1.9 KiB
Markdown
# Image Processor Lambda
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Processes uploaded images by extracting metadata (EXIF, GPS, camera info) and stripping it before storing publicly. Triggered by S3 uploads to the `staging/` prefix.
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## How It Works
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1. User uploads image to `staging/{folder}/{uuid}.jpg` via presigned URL
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2. S3 triggers this Lambda
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3. Lambda extracts metadata and saves to `ImageMetadata` table
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4. Lambda strips EXIF data from image
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5. Lambda moves clean image to final location `{folder}/{uuid}.jpg`
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6. Lambda deletes staging file
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## Local Development
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### Install Dependencies
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```bash
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cd lambdas/shared && npm install
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cd ../imageProcessor && npm install
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```
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### Run Locally
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```bash
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aws s3 cp source s3://bucket-name/staging/image-type/key --profile your-profile-name
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```
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```bash
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npm run local -- staging/items/test-image.jpg my-bucket
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```
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### Run Migration
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```bash
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cd backend
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npx sequelize-cli db:migrate
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```
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## Supported Image Types
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- JPEG (`.jpg`, `.jpeg`)
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- PNG (`.png`)
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- GIF (`.gif`) - preserves animation
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- WebP (`.webp`)
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## Metadata Extracted
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| Field | Description |
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| --------------------------- | -------------------------------------------- |
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| `latitude`, `longitude` | GPS coordinates (stripped from public image) |
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| `cameraMake`, `cameraModel` | Camera manufacturer and model |
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| `cameraSoftware` | Software used to create image |
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| `dateTaken` | Original capture date |
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| `width`, `height` | Image dimensions |
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| `orientation` | EXIF orientation flag |
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| `fileSize` | File size in bytes |
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## Deployment
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See [infrastructure/cdk/README.md](../../infrastructure/cdk/README.md) for deployment instructions.
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```bash
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cd infrastructure/cdk
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npm run deploy:staging
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```
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