70 lines
1.8 KiB
Go
70 lines
1.8 KiB
Go
package cache
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import (
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"context"
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"errors"
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"github.com/matrix-org/dendrite/internal/caching"
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"github.com/matrix-org/dendrite/internal/keydb"
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"github.com/matrix-org/gomatrixserverlib"
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)
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// A Database implements gomatrixserverlib.KeyDatabase and is used to store
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// the public keys for other matrix servers.
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type KeyDatabase struct {
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inner keydb.Database
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cache caching.ImmutableCache
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}
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func NewKeyDatabase(inner keydb.Database, cache caching.ImmutableCache) (*KeyDatabase, error) {
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if inner == nil {
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return nil, errors.New("inner database can't be nil")
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}
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if cache == nil {
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return nil, errors.New("cache can't be nil")
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}
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return &KeyDatabase{
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inner: inner,
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cache: cache,
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}, nil
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}
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// FetcherName implements KeyFetcher
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func (d KeyDatabase) FetcherName() string {
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return "InMemoryKeyCache"
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}
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// FetchKeys implements gomatrixserverlib.KeyDatabase
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func (d *KeyDatabase) FetchKeys(
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ctx context.Context,
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requests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp,
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) (map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult, error) {
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results := make(map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult)
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for req := range requests {
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if res, cached := d.cache.GetServerKey(req); cached {
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results[req] = res
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delete(requests, req)
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}
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}
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fromDB, err := d.inner.FetchKeys(ctx, requests)
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if err != nil {
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return results, err
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}
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for req, res := range fromDB {
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results[req] = res
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d.cache.StoreServerKey(req, res)
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}
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return results, nil
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}
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// StoreKeys implements gomatrixserverlib.KeyDatabase
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func (d *KeyDatabase) StoreKeys(
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ctx context.Context,
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keyMap map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult,
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) error {
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for req, res := range keyMap {
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d.cache.StoreServerKey(req, res)
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}
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return d.inner.StoreKeys(ctx, keyMap)
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}
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