/
migrate.go
95 lines (81 loc) · 1.91 KB
/
migrate.go
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package cmd
import (
"errors"
"flag"
"fmt"
"os"
"github.com/vim-volt/volt/cmd/migrate"
"github.com/vim-volt/volt/logger"
)
func init() {
cmdMap["migrate"] = &migrateCmd{}
}
type migrateCmd struct {
helped bool
}
func (cmd *migrateCmd) ProhibitRootExecution(args []string) bool { return true }
func (cmd *migrateCmd) FlagSet() *flag.FlagSet {
fs := flag.NewFlagSet(os.Args[0], flag.ContinueOnError)
fs.SetOutput(os.Stdout)
fs.Usage = func() {
args := fs.Args()
if len(args) > 0 {
m, err := migrate.GetMigrater(args[0])
if err != nil {
return
}
fmt.Println(m.Description(false))
fmt.Println()
cmd.helped = true
return
}
fmt.Println(`Usage
volt migrate [-help] {migration operation}
Description
Perform miscellaneous migration operations.
See detailed help for 'volt migrate -help {migration operation}'.
Available operations`)
cmd.showAvailableOps(func(line string) {
fmt.Println(line)
})
//fmt.Println("Options")
//fs.PrintDefaults()
fmt.Println()
cmd.helped = true
}
return fs
}
func (cmd *migrateCmd) Run(args []string) int {
op, err := cmd.parseArgs(args)
if err == ErrShowedHelp {
return 0
}
if err != nil {
logger.Error("Failed to parse args: " + err.Error())
return 10
}
if err := op.Migrate(); err != nil {
logger.Error("Failed to migrate: " + err.Error())
return 11
}
logger.Infof("'%s' was successfully migrated!", op.Name())
return 0
}
func (cmd *migrateCmd) parseArgs(args []string) (migrate.Migrater, error) {
fs := cmd.FlagSet()
fs.Parse(args)
if cmd.helped {
return nil, ErrShowedHelp
}
args = fs.Args()
if len(args) == 0 {
return nil, errors.New("please specify migration operation")
}
return migrate.GetMigrater(args[0])
}
func (cmd *migrateCmd) showAvailableOps(write func(string)) {
for _, m := range migrate.ListMigraters() {
write(fmt.Sprintf(" %s", m.Name()))
write(fmt.Sprintf(" %s", m.Description(true)))
}
}