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package models
import (
"fmt"
"sync"
"github.com/MichaelMure/git-bug/cache"
"github.com/MichaelMure/git-bug/entity"
"github.com/MichaelMure/git-bug/identity"
"github.com/MichaelMure/git-bug/util/lamport"
"github.com/MichaelMure/git-bug/util/timestamp"
)
// IdentityWrapper is an interface used by the GraphQL resolvers to handle an identity.
// Depending on the situation, an Identity can already be fully loaded in memory or not.
// This interface is used to wrap either a lazyIdentity or a loadedIdentity depending on the situation.
type IdentityWrapper interface {
Id() entity.Id
Name() string
Email() (string, error)
Login() (string, error)
AvatarUrl() (string, error)
Keys() ([]*identity.Key, error)
ValidKeysAtTime(time lamport.Time) ([]*identity.Key, error)
DisplayName() string
IsProtected() (bool, error)
LastModificationLamport() (lamport.Time, error)
LastModification() (timestamp.Timestamp, error)
}
var _ IdentityWrapper = &lazyIdentity{}
type lazyIdentity struct {
cache *cache.RepoCache
excerpt *cache.IdentityExcerpt
mu sync.Mutex
id *cache.IdentityCache
}
func NewLazyIdentity(cache *cache.RepoCache, excerpt *cache.IdentityExcerpt) *lazyIdentity {
return &lazyIdentity{
cache: cache,
excerpt: excerpt,
}
}
func (li *lazyIdentity) load() (*cache.IdentityCache, error) {
if li.id != nil {
return li.id, nil
}
li.mu.Lock()
defer li.mu.Unlock()
id, err := li.cache.ResolveIdentity(li.excerpt.Id)
if err != nil {
return nil, fmt.Errorf("cache: missing identity %v", li.excerpt.Id)
}
li.id = id
return id, nil
}
func (li *lazyIdentity) Id() entity.Id {
return li.excerpt.Id
}
func (li *lazyIdentity) Name() string {
return li.excerpt.Name
}
func (li *lazyIdentity) Email() (string, error) {
id, err := li.load()
if err != nil {
return "", err
}
return id.Email(), nil
}
func (li *lazyIdentity) Login() (string, error) {
id, err := li.load()
if err != nil {
return "", err
}
return id.Login(), nil
}
func (li *lazyIdentity) AvatarUrl() (string, error) {
id, err := li.load()
if err != nil {
return "", err
}
return id.AvatarUrl(), nil
}
func (li *lazyIdentity) Keys() ([]*identity.Key, error) {
id, err := li.load()
if err != nil {
return nil, err
}
return id.Keys(), nil
}
func (li *lazyIdentity) ValidKeysAtTime(time lamport.Time) ([]*identity.Key, error) {
id, err := li.load()
if err != nil {
return nil, err
}
return id.ValidKeysAtTime(time), nil
}
func (li *lazyIdentity) DisplayName() string {
return li.excerpt.DisplayName()
}
func (li *lazyIdentity) IsProtected() (bool, error) {
id, err := li.load()
if err != nil {
return false, err
}
return id.IsProtected(), nil
}
func (li *lazyIdentity) LastModificationLamport() (lamport.Time, error) {
id, err := li.load()
if err != nil {
return 0, err
}
return id.LastModificationLamport(), nil
}
func (li *lazyIdentity) LastModification() (timestamp.Timestamp, error) {
id, err := li.load()
if err != nil {
return 0, err
}
return id.LastModification(), nil
}
var _ IdentityWrapper = &loadedIdentity{}
type loadedIdentity struct {
identity.Interface
}
func NewLoadedIdentity(id identity.Interface) *loadedIdentity {
return &loadedIdentity{Interface: id}
}
func (l loadedIdentity) Email() (string, error) {
return l.Interface.Email(), nil
}
func (l loadedIdentity) Login() (string, error) {
return l.Interface.Login(), nil
}
func (l loadedIdentity) AvatarUrl() (string, error) {
return l.Interface.AvatarUrl(), nil
}
func (l loadedIdentity) Keys() ([]*identity.Key, error) {
return l.Interface.Keys(), nil
}
func (l loadedIdentity) ValidKeysAtTime(time lamport.Time) ([]*identity.Key, error) {
return l.Interface.ValidKeysAtTime(time), nil
}
func (l loadedIdentity) IsProtected() (bool, error) {
return l.Interface.IsProtected(), nil
}
func (l loadedIdentity) LastModificationLamport() (lamport.Time, error) {
return l.Interface.LastModificationLamport(), nil
}
func (l loadedIdentity) LastModification() (timestamp.Timestamp, error) {
return l.Interface.LastModification(), nil
}
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