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2bbfe4d56f
@jbenet @whyrusleeping @mappum very helpful for tracking down errors. the stack traces are only shown when debug mode is visible. They function best when caught at the source. I propose we use this errors package as a drop-in replacement for fmt.Errorf and errors.New in all of our code, and use errors.Wrap for external errors as they emerge from others' libraries. License: MIT Signed-off-by: Brian Tiger Chow <brian@perfmode.com> Signed-off-by: Brian Tiger Chow <brian.holderchow@gmail.com>
32 lines
640 B
Go
32 lines
640 B
Go
package daemon
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import (
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"io"
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"path"
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lock "github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/camlistore/lock"
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"github.com/jbenet/go-ipfs/util"
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"github.com/jbenet/go-ipfs/util/errors"
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)
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// LockFile is the filename of the daemon lock, relative to config dir
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const LockFile = "daemon.lock"
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func Lock(confdir string) (io.Closer, error) {
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c, err := lock.Lock(path.Join(confdir, LockFile))
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return c, errors.Wrap(err)
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}
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func Locked(confdir string) bool {
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if !util.FileExists(path.Join(confdir, LockFile)) {
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return false
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}
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if lk, err := Lock(confdir); err != nil {
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return true
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} else {
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lk.Close()
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return false
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}
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}
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