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lazygit/pkg/commands/git_cmd_obj_runner.go
Jesse Duffield 16ed3c2377 Retry on index.lock error
I don't know why we're getting index.lock errors but they're impossile to stop
anyway given that other processes can be calling git commands. So we're retrying
a few times before re-raising. To do this we need to clone the command and the current
implementation for that is best-effort.

I do worry about the maintainability of that but we'll see how it goes.

Also, I thought you'd need to clone the task (if it exists) but now I think not;
as long as you don't call done twice on it you should be fine, and you shouldn't
be done'ing a task as part of running a command: that should happen higher up.
2023-07-10 19:13:18 +10:00

70 lines
2.0 KiB
Go

package commands
import (
"strings"
"time"
"github.com/jesseduffield/lazygit/pkg/commands/oscommands"
"github.com/sirupsen/logrus"
)
// here we're wrapping the default command runner in some git-specific stuff e.g. retry logic if we get an error due to the presence of .git/index.lock
const (
WaitTime = 50 * time.Millisecond
RetryCount = 5
)
type gitCmdObjRunner struct {
log *logrus.Entry
innerRunner oscommands.ICmdObjRunner
}
func (self *gitCmdObjRunner) Run(cmdObj oscommands.ICmdObj) error {
_, err := self.RunWithOutput(cmdObj)
return err
}
func (self *gitCmdObjRunner) RunWithOutput(cmdObj oscommands.ICmdObj) (string, error) {
var output string
var err error
for i := 0; i < RetryCount; i++ {
newCmdObj := cmdObj.Clone()
output, err = self.innerRunner.RunWithOutput(newCmdObj)
if err == nil || !strings.Contains(output, ".git/index.lock") {
return output, err
}
// if we have an error based on the index lock, we should wait a bit and then retry
self.log.Warn("index.lock prevented command from running. Retrying command after a small wait")
time.Sleep(WaitTime)
}
return output, err
}
func (self *gitCmdObjRunner) RunWithOutputs(cmdObj oscommands.ICmdObj) (string, string, error) {
var stdout, stderr string
var err error
for i := 0; i < RetryCount; i++ {
newCmdObj := cmdObj.Clone()
stdout, stderr, err = self.innerRunner.RunWithOutputs(newCmdObj)
if err == nil || !strings.Contains(stdout+stderr, ".git/index.lock") {
return stdout, stderr, err
}
// if we have an error based on the index lock, we should wait a bit and then retry
self.log.Warn("index.lock prevented command from running. Retrying command after a small wait")
time.Sleep(WaitTime)
}
return stdout, stderr, err
}
// Retry logic not implemented here, but these commands typically don't need to obtain a lock.
func (self *gitCmdObjRunner) RunAndProcessLines(cmdObj oscommands.ICmdObj, onLine func(line string) (bool, error)) error {
return self.innerRunner.RunAndProcessLines(cmdObj, onLine)
}