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improve and simplify repository caching

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This commit is contained in:
Brad Rydzewski
2016-03-04 21:15:50 -08:00
parent 6769eed65d
commit 3dd0260b69
15 changed files with 444 additions and 364 deletions
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79
cache/helper.go vendored
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@@ -4,72 +4,51 @@ import (
"fmt"
"github.com/drone/drone/model"
"github.com/drone/drone/remote"
"golang.org/x/net/context"
)
// GetRepos returns the user permissions to the named repository
// from the cache associated with the current context.
func GetPerms(c context.Context, user *model.User, owner, name string) *model.Perm {
// GetPerm returns the user permissions repositories from the cache
// associated with the current repository.
func GetPerms(c context.Context, user *model.User, owner, name string) (*model.Perm, error) {
key := fmt.Sprintf("perms:%s:%s/%s",
user.Login,
owner,
name,
)
val, err := FromContext(c).Get(key)
if err != nil {
return nil
// if we fetch from the cache we can return immediately
val, err := Get(c, key)
if err == nil {
return val.(*model.Perm), nil
}
return val.(*model.Perm)
}
// SetRepos adds the listof user permissions to the named repsotiory
// to the cache assocaited with the current context.
func SetPerms(c context.Context, user *model.User, perm *model.Perm, owner, name string) {
key := fmt.Sprintf("perms:%s:%s/%s",
user.Login,
owner,
name,
)
FromContext(c).Set(key, perm)
// else we try to grab from the remote system and
// populate our cache.
perm, err := remote.Perm(c, user, owner, name)
if err != nil {
return nil, err
}
Set(c, key, perm)
return perm, nil
}
// GetRepos returns the list of user repositories from the cache
// associated with the current context.
func GetRepos(c context.Context, user *model.User) []*model.RepoLite {
func GetRepos(c context.Context, user *model.User) ([]*model.RepoLite, error) {
key := fmt.Sprintf("repos:%s",
user.Login,
)
val, err := FromContext(c).Get(key)
if err != nil {
return nil
// if we fetch from the cache we can return immediately
val, err := Get(c, key)
if err == nil {
return val.([]*model.RepoLite), nil
}
// else we try to grab from the remote system and
// populate our cache.
repos, err := remote.Repos(c, user)
if err != nil {
return nil, err
}
return val.([]*model.RepoLite)
}
// SetRepos adds the listof user repositories to the cache assocaited
// with the current context.
func SetRepos(c context.Context, user *model.User, repos []*model.RepoLite) {
key := fmt.Sprintf("repos:%s",
user.Login,
)
FromContext(c).Set(key, repos)
Set(c, key, repos)
return repos, nil
}
// GetSetRepos is a helper function that attempts to get the
// repository list from the cache first. If no data is in the
// cache or it is expired, it will remotely fetch the list of
// repositories and populate the cache.
// func GetSetRepos(c context.Context, user *model.User) ([]*model.RepoLite, error) {
// cache := FromContext(c).Repos()
// repos := FromContext(c).Repos().Get(user)
// if repos != nil {
// return repos, nil
// }
// var err error
// repos, err = remote.FromContext(c).Repos(user)
// if err != nil {
// return nil, err
// }
// cache.Set(user, repos)
// return repos, nil
// }