cache: many fixes following the dag entity migration

1 files changed, 29 insertions, 0 deletions

diff --git a/cache/resolvers.go b/cache/resolvers.go
index 36b70d3b..e53c3660 100644
--- a/cache/resolvers.go
+++ b/cache/resolvers.go
@@ -20,3 +20,32 @@ func newIdentityCacheResolver(cache *RepoCache) *identityCacheResolver {
 func (i *identityCacheResolver) ResolveIdentity(id entity.Id) (identity.Interface, error) {
 	return i.cache.ResolveIdentity(id)
 }
+
+var _ identity.Resolver = &identityCacheResolverNoLock{}
+
+// identityCacheResolverNoLock is an identity Resolver that retrieve identities from
+// the cache, without locking it.
+type identityCacheResolverNoLock struct {
+	cache *RepoCache
+}
+
+func newIdentityCacheResolverNoLock(cache *RepoCache) *identityCacheResolverNoLock {
+	return &identityCacheResolverNoLock{cache: cache}
+}
+
+func (ir *identityCacheResolverNoLock) ResolveIdentity(id entity.Id) (identity.Interface, error) {
+	cached, ok := ir.cache.identities[id]
+	if ok {
+		return cached, nil
+	}
+
+	i, err := identity.ReadLocal(ir.cache.repo, id)
+	if err != nil {
+		return nil, err
+	}
+
+	cached = NewIdentityCache(ir.cache, i)
+	ir.cache.identities[id] = cached
+
+	return cached, nil
+}