Analyzers
About analyzers
Analyzers are used to get information about the blob and store it to metadata.
For example, you can get Image width and height with an image analyzer.
Usage
Usually you want to run these in delayed jobs to avoid blocking requests. For
example, you can add afterAttach callback to Uplo and schedule a blob analyze
job.
const uplo = createUplo({
callbacks: {
afterAttach: async ({ blob }) => {
await DelayedJob.performLater('uplo-analyze-blob', { id: blob.id })
},
},
})Then, in the delayed job you can find blob and call analyze like this:
import { createAnalyzer } from '@uplo/analyzer'
import { imageAnalyzer } from '@uplo/analyzer-image'
import { uplo } from './lib/uplo'
const analyzer = createAnalyzer({
analyzers: [imageAnalyzer()],
})
export const uploAnalyzeBlobWorker = async ({ id }: { id: ID }) => {
if (!id) return
const blob = await uplo.$findBlob(id)
if (!blob) return
return await analyzer.analyze({ blob })
}