mirror of
https://github.com/opencloud-eu/opencloud.git
synced 2026-10-05 02:15:15 -04:00
Jörn Friedrich Dreyer
5c3b7f8890
webdav now owns the complete thumbnail pipeline: stat -> validate -> cache check -> download -> preprocess -> generate -> cache -> respond. The thumbnails service is used only as a stateless imagor-compatible image resizer via its /unsafe push endpoint. - New ThumbnailWorkflow drives the pipeline; space-scoped refs are anchored at the space ResourceId and downloads authenticate with the user's x-access-token. - Preprocessing (audio/geogebra/text/gif) moves from the thumbnails service into webdav (services/webdav/pkg/preprocessor). - Thumbnail caching moves to webdav (memory/file/s3 backends, file cache off by default); resolutions are snapped orientation-aware in webdav. - Generator URL defaults to the local thumbnails service; new WEBDAV_* config for generator, cache and resolutions. - Acceptance tests updated for the new sizing/processor behavior.
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
//go:build !enable_vips
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package workflow
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import (
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"bytes"
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"fmt"
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"image"
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"image/gif"
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"image/jpeg"
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"image/png"
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"github.com/opencloud-eu/opencloud/services/webdav/pkg/generator"
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)
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// encodeForUpload turns the value produced by the preprocessing step into
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// bytes for upload to the generator. Raw image bytes pass through unchanged;
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// converted values are encoded in-process.
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func encodeForUpload(v any, mimeType string) ([]byte, string, error) {
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switch data := v.(type) {
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case []byte:
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return data, generator.GuessExtension(mimeType), nil
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case image.Image:
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var (
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buf bytes.Buffer
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err error
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)
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if mimeType == "image/jpeg" || mimeType == "image/jpg" {
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err = jpeg.Encode(&buf, data, &jpeg.Options{Quality: 85})
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return buf.Bytes(), "jpg", err
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}
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err = png.Encode(&buf, data)
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return buf.Bytes(), "png", err
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case *gif.GIF:
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var buf bytes.Buffer
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if err := gif.EncodeAll(&buf, data); err != nil {
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return nil, "", fmt.Errorf("encode gif: %w", err)
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}
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return buf.Bytes(), "gif", nil
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default:
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return nil, "", fmt.Errorf("unsupported converted type %T", v)
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}
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}
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