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package git
import (
"gopkg.in/src-d/go-git.v4/clients"
"gopkg.in/src-d/go-git.v4/clients/common"
"gopkg.in/src-d/go-git.v4/core"
"gopkg.in/src-d/go-git.v4/formats/packfile"
)
// Remote represents a connection to a remote repository
type Remote struct {
Endpoint common.Endpoint
Auth common.AuthMethod
upSrv common.GitUploadPackService
upInfo *common.GitUploadPackInfo
}
// NewRemote returns a new Remote, using as client http.DefaultClient
func NewRemote(url string) (*Remote, error) {
return NewAuthenticatedRemote(url, nil)
}
// NewAuthenticatedRemote returns a new Remote using the given AuthMethod, using as
// client http.DefaultClient
func NewAuthenticatedRemote(url string, auth common.AuthMethod) (*Remote, error) {
end, err := common.NewEndpoint(url)
if err != nil {
return nil, err
}
upSrv, err := clients.NewGitUploadPackService(url)
if err != nil {
return nil, err
}
return &Remote{
Endpoint: end,
Auth: auth,
upSrv: upSrv,
}, nil
}
// Connect with the endpoint
func (r *Remote) Connect() error {
var err error
if r.Auth == nil {
err = r.upSrv.Connect(r.Endpoint)
} else {
err = r.upSrv.ConnectWithAuth(r.Endpoint, r.Auth)
}
if err != nil {
return err
}
return r.retrieveUpInfo()
}
func (r *Remote) retrieveUpInfo() error {
var err error
if r.upInfo, err = r.upSrv.Info(); err != nil {
return err
}
return nil
}
// Info returns the git-upload-pack info
func (r *Remote) Info() *common.GitUploadPackInfo {
return r.upInfo
}
// Capabilities returns the remote capabilities
func (r *Remote) Capabilities() *common.Capabilities {
return r.upInfo.Capabilities
}
// Fetch returns a reader using the request
func (r *Remote) Fetch(s core.ObjectStorage, o *FetchOptions) (h core.Hash, err error) {
ref, err := r.Ref(o.ReferenceName, true)
if err != nil {
return core.ZeroHash, err
}
h = ref.Hash()
req := &common.GitUploadPackRequest{}
req.Want(h)
reader, err := r.upSrv.Fetch(req)
if err != nil {
return core.ZeroHash, err
}
defer checkClose(reader, &err)
stream := packfile.NewStream(reader)
d := packfile.NewDecoder(stream)
return h, d.Decode(s)
}
// Head returns the Reference of the HEAD
func (r *Remote) Head() *core.Reference {
return r.upInfo.Head()
}
// Ref returns the Hash pointing the given refName
func (r *Remote) Ref(name core.ReferenceName, resolved bool) (*core.Reference, error) {
if resolved {
return core.ResolveReference(r.upInfo.Refs, name)
}
return r.upInfo.Refs.Get(name)
}
// Refs returns a map with all the References
func (r *Remote) Refs() core.ReferenceIter {
i, _ := r.upInfo.Refs.Iter()
return i
}
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