08bf443016
* Inital routes to git refs api * Git refs API implementation * Update swagger * Fix copyright * Make swagger happy add basic test * Fix test * Fix test again :)
43 lines
978 B
Go
43 lines
978 B
Go
// +build !norwfs
|
|
|
|
package dotgit
|
|
|
|
import (
|
|
"os"
|
|
|
|
"gopkg.in/src-d/go-git.v4/plumbing"
|
|
"gopkg.in/src-d/go-git.v4/utils/ioutil"
|
|
)
|
|
|
|
func (d *DotGit) setRef(fileName, content string, old *plumbing.Reference) (err error) {
|
|
// If we are not checking an old ref, just truncate the file.
|
|
mode := os.O_RDWR | os.O_CREATE
|
|
if old == nil {
|
|
mode |= os.O_TRUNC
|
|
}
|
|
|
|
f, err := d.fs.OpenFile(fileName, mode, 0666)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
defer ioutil.CheckClose(f, &err)
|
|
|
|
// Lock is unlocked by the deferred Close above. This is because Unlock
|
|
// does not imply a fsync and thus there would be a race between
|
|
// Unlock+Close and other concurrent writers. Adding Sync to go-billy
|
|
// could work, but this is better (and avoids superfluous syncs).
|
|
err = f.Lock()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// this is a no-op to call even when old is nil.
|
|
err = d.checkReferenceAndTruncate(f, old)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
_, err = f.Write([]byte(content))
|
|
return err
|
|
}
|