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gitconfig.go

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cache-sqlite

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gitconfig.go

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package repository

import (

"errors"

"fmt"

"time"

"github.com/git-bug/gitconfig"

)

// configLockTimeout is how long an update waits for the lock of a config file

// held by another writer, git or git-bug. Writers hold it for a few syscalls,

// so running out means the lock was most likely left behind by a crash.

var configLockTimeout = time.Second

var _ Config = &gitConfig{}

// gitConfig gives access to the git configuration of a repository. Every read

// reads the files again, and every update is done under git's lock.

type gitConfig struct {

env gitconfig.Env

}

// NewGitConfig returns the Config of the git configuration that env says where

// to find.

func NewGitConfig(env gitconfig.Env) Config {

return &gitConfig{env: env}

}

func (c *gitConfig) Read() (*gitconfig.Config, error) {

return c.env.Load()

}

func (c *gitConfig) Update(fn func(f *gitconfig.File) error) error {

deadline := time.Now().Add(configLockTimeout)

wait := time.Millisecond

for {

err := c.env.UpdateScope(gitconfig.ScopeLocal, fn)

if !errors.Is(err, gitconfig.ErrLocked) {

return err

}

if time.Now().After(deadline) {

return fmt.Errorf("%w: another process is updating the config, or crashed doing so; if no git or git-bug process is running, remove the lock file", err)

}

time.Sleep(wait)

wait = min(2*wait, 50*time.Millisecond)

}

}