Files
pixa/internal/imagerequest/sourcekey.go
T
clawbot a19cca2f34
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Store a source the way a variant is stored, one row and one file per source URL (closes #308)
A source is now one source_content row and one file named by its
SourceKey, the SHA-256 of its host, path and query, made as the variant
key is. A store writes the file, then upserts the row, and removes the
file when the row cannot be written; an eviction deletes the row, then
the file, with no lock. source_metadata, the JSON files under
cache/metadata/, MetadataStorage, the content lock, the eviction
transaction and its test hook are gone, as is the reconciliation pass
that dropped a source row whose file is missing. Two source URLs
serving the same bytes store them twice.

Model: opus-5-5
2026-10-21 16:31:33 +02:00

27 lines
656 B
Go

package imagerequest
import (
"crypto/sha256"
"encoding/hex"
"fmt"
)
// SourceKey is a SHA256 hash identifying a cached source image (hex-encoded).
type SourceKey string
// Key returns the key the source is cached under, made as CacheKey makes a
// variant key.
// Format: sha256(host:path:query)
// The path and query go through escapePercentAndColon, so that a ":" in
// either cannot be taken for the one between them.
func (s Source) Key() SourceKey {
data := fmt.Sprintf("%s:%s:%s",
s.Host,
escapePercentAndColon(s.Path),
escapePercentAndColon(s.Query),
)
h := sha256.Sum256([]byte(data))
return SourceKey(hex.EncodeToString(h[:]))
}