Files
remark42/backend/app/cmd/backup.go
T
Dmitry VerkhoturovandUmputun f104a6e1b6 move common options to cmd.go
Timeout, admin password and site id are set in many commands,
and we need to take care of synchronising the descriptions
and flags between them.

This change moves these standard options to cmd.go importing them
in the same manner CommonOpts imported by all commands already.
2022-07-25 12:42:13 -05:00

81 lines
2.3 KiB
Go

package cmd
import (
"context"
"fmt"
"io"
"net/http"
"os"
"time"
log "github.com/go-pkgz/lgr"
)
// BackupCommand set of flags and command for export
// ExportPath used as a separate element to leverage BACKUP_PATH. If ExportFile has a path (i.e. with /) BACKUP_PATH ignored.
type BackupCommand struct {
ExportPath string `short:"p" long:"path" env:"BACKUP_PATH" default:"./var/backup" description:"export path"`
ExportFile string `short:"f" long:"file" default:"userbackup-{{.SITE}}-{{.TS}}.gz" description:"file name"`
SupportCmdOpts
CommonOpts
}
// Execute runs export with ExportCommand parameters, entry point for "export" command
func (ec *BackupCommand) Execute(_ []string) error {
log.Printf("[INFO] export to %s, site %s", ec.ExportPath, ec.Site)
resetEnv("SECRET", "ADMIN_PASSWD")
fp := fileParser{site: ec.Site, path: ec.ExportPath, file: ec.ExportFile}
fname, err := fp.parse(time.Now())
if err != nil {
return err
}
log.Printf("[DEBUG] export file %s", fname)
// prepare http client and request
client := http.Client{}
defer client.CloseIdleConnections()
ctx, cancel := context.WithTimeout(context.Background(), ec.Timeout)
defer cancel()
exportURL := fmt.Sprintf("%s/api/v1/admin/export?mode=file&site=%s", ec.RemarkURL, ec.Site)
req, err := http.NewRequest(http.MethodGet, exportURL, http.NoBody)
if err != nil {
return fmt.Errorf("can't make export request for %s: %w", exportURL, err)
}
req.SetBasicAuth("admin", ec.AdminPasswd)
// get with timeout
resp, err := client.Do(req.WithContext(ctx))
if err != nil {
return fmt.Errorf("request failed for %s: %w", exportURL, err)
}
defer func() {
if err = resp.Body.Close(); err != nil {
log.Printf("[WARN] failed to close response, %s", err)
}
}()
if resp.StatusCode >= 300 {
return responseError(resp)
}
fh, err := os.Create(fname) //nolint:gosec // harmless
if err != nil {
return fmt.Errorf("can't create backup file %s: %w", fname, err)
}
defer func() { //nolint:gosec // false positive on defer without error check when it's checked here
if err = fh.Close(); err != nil {
log.Printf("[WARN] failed to close file %s, %s", fh.Name(), err)
}
}()
if _, err = io.Copy(fh, resp.Body); err != nil {
return fmt.Errorf("failed to write backup file %s: %w", fname, err)
}
log.Printf("[INFO] export completed, file %s", fname)
return nil
}