// MakePatchedConfig takes in the path to a remote configuration a stringified version
// of the current project and returns an unmarshalled version of the project
// with the patch applied
func MakePatchedConfig(p *patch.Patch, remoteConfigPath, projectConfig string) (
*Project, error) {
// Dereference all the patch data so that we can use it to write temp files
err := p.FetchPatchFiles()
if err != nil {
return nil, err
}
for _, patchPart := range p.Patches {
// we only need to patch the main project and not any other modules
if patchPart.ModuleName != "" {
continue
}
// write patch file
patchFilePath, err := util.WriteToTempFile(patchPart.PatchSet.Patch)
if err != nil {
return nil, fmt.Errorf("could not write patch file: %v", err)
}
defer os.Remove(patchFilePath)
// write project configuration
configFilePath, err := util.WriteToTempFile(projectConfig)
if err != nil {
return nil, fmt.Errorf("could not write config file: %v", err)
}
defer os.Remove(configFilePath)
// clean the working directory
workingDirectory := filepath.Dir(patchFilePath)
localConfigPath := filepath.Join(
workingDirectory,
remoteConfigPath,
)
parentDir := strings.Split(
remoteConfigPath,
string(os.PathSeparator),
)[0]
err = os.RemoveAll(filepath.Join(workingDirectory, parentDir))
if err != nil {
return nil, err
}
if err = os.MkdirAll(filepath.Dir(localConfigPath), 0755); err != nil {
return nil, err
}
// rename the temporary config file name to the remote config
// file path if we are patching an existing remote config
if len(projectConfig) > 0 {
if err = os.Rename(configFilePath, localConfigPath); err != nil {
return nil, fmt.Errorf("could not rename file '%v' to '%v': %v",
configFilePath, localConfigPath, err)
}
defer os.Remove(localConfigPath)
}
// selectively apply the patch to the config file
patchCommandStrings := []string{
fmt.Sprintf("set -o verbose"),
fmt.Sprintf("set -o errexit"),
fmt.Sprintf("git apply --whitespace=fix --include=%v < '%v'",
remoteConfigPath, patchFilePath),
}
patchCmd := &command.LocalCommand{
CmdString: strings.Join(patchCommandStrings, "\n"),
WorkingDirectory: workingDirectory,
Stdout: evergreen.NewInfoLoggingWriter(&evergreen.Logger),
Stderr: evergreen.NewErrorLoggingWriter(&evergreen.Logger),
ScriptMode: true,
}
if err = patchCmd.Run(); err != nil {
return nil, fmt.Errorf("could not run patch command: %v", err)
}
// read in the patched config file
data, err := ioutil.ReadFile(localConfigPath)
if err != nil {
return nil, fmt.Errorf("could not read patched config file: %v",
err)
}
project := &Project{}
if err = LoadProjectInto(data, p.Project, project); err != nil {
return nil, err
}
return project, nil
}
return nil, fmt.Errorf("no patch on project")
}
