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Update migrate command

This commit is contained in:
Ken Hibino 2020-09-10 06:53:07 -07:00
parent 9d41de795a
commit a9aa480551

366
tools/asynq/cmd/migrate.go Normal file
View File

@ -0,0 +1,366 @@
// Copyright 2020 Kentaro Hibino. All rights reserved.
// Use of this source code is governed by a MIT license
// that can be found in the LICENSE file.
package cmd
import (
"encoding/json"
"fmt"
"os"
"strings"
"time"
"github.com/go-redis/redis/v7"
"github.com/google/uuid"
"github.com/hibiken/asynq/internal/base"
"github.com/spf13/cast"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var migrateCmd = &cobra.Command{
Use: "migrate",
Short: fmt.Sprintf("Migrate all tasks to be compatible with asynq v%s", base.Version),
Args: cobra.NoArgs,
Run: migrate,
}
func init() {
rootCmd.AddCommand(migrateCmd)
}
func migrate(cmd *cobra.Command, args []string) {
c := redis.NewClient(&redis.Options{
Addr: viper.GetString("uri"),
DB: viper.GetInt("db"),
Password: viper.GetString("password"),
})
r := createRDB()
/*** Migrate from 0.9 to 0.10, 0.11 compatible ***/
lists := []string{"asynq:in_progress"}
allQueues, err := c.SMembers(base.AllQueues).Result()
if err != nil {
printError(fmt.Errorf("could not read all queues: %v", err))
os.Exit(1)
}
lists = append(lists, allQueues...)
for _, key := range lists {
if err := migrateList(c, key); err != nil {
printError(err)
os.Exit(1)
}
}
zsets := []string{"asynq:scheduled", "asynq:retry", "asynq:dead"}
for _, key := range zsets {
if err := migrateZSet(c, key); err != nil {
printError(err)
os.Exit(1)
}
}
/*** Migrate from 0.11 to 0.12 compatible ***/
if err := createBackup(c, base.AllQueues); err != nil {
printError(err)
os.Exit(1)
}
for _, qkey := range allQueues {
qname := strings.TrimPrefix(qkey, "asynq:queues:")
if err := c.SAdd(base.AllQueues, qname).Err(); err != nil {
err = fmt.Errorf("could not add queue name %q to %q set: %v\n",
qname, base.AllQueues, err)
printError(err)
os.Exit(1)
}
}
if err := deleteBackup(c, base.AllQueues); err != nil {
printError(err)
os.Exit(1)
}
for _, qkey := range allQueues {
qname := strings.TrimPrefix(qkey, "asynq:queues:")
if exists := c.Exists(qkey).Val(); exists == 1 {
if err := c.Rename(qkey, base.QueueKey(qname)).Err(); err != nil {
printError(fmt.Errorf("could not rename key %q: %v\n", qkey, err))
os.Exit(1)
}
}
}
if err := partitionZSetMembersByQueue(c, "asynq:scheduled", base.ScheduledKey); err != nil {
printError(err)
os.Exit(1)
}
if err := partitionZSetMembersByQueue(c, "asynq:retry", base.RetryKey); err != nil {
printError(err)
os.Exit(1)
}
if err := partitionZSetMembersByQueue(c, "asynq:dead", base.DeadKey); err != nil {
printError(err)
os.Exit(1)
}
if err := partitionZSetMembersByQueue(c, "asynq:deadlines", base.DeadlinesKey); err != nil {
printError(err)
os.Exit(1)
}
if err := partitionListMembersByQueue(c, "asynq:in_progress", base.ActiveKey); err != nil {
printError(err)
os.Exit(1)
}
paused, err := c.SMembers("asynq:paused").Result()
if err != nil {
printError(fmt.Errorf("command SMEMBERS asynq:paused failed: ", err))
os.Exit(1)
}
for _, qkey := range paused {
qname := strings.TrimPrefix(qkey, "asynq:queues:")
if err := r.Pause(qname); err != nil {
printError(err)
os.Exit(1)
}
}
if err := deleteKey(c, "asynq:paused"); err != nil {
printError(err)
os.Exit(1)
}
if err := deleteKey(c, "asynq:servers"); err != nil {
printError(err)
os.Exit(1)
}
if err := deleteKey(c, "asynq:workers"); err != nil {
printError(err)
os.Exit(1)
}
}
func backupKey(key string) string {
return fmt.Sprintf("%s:backup", key)
}
func createBackup(c *redis.Client, key string) error {
err := c.Rename(key, backupKey(key)).Err()
if err != nil {
return fmt.Errorf("could not rename key %q: %v", key, err)
}
return nil
}
func deleteBackup(c *redis.Client, key string) error {
return deleteKey(c, backupKey(key))
}
func deleteKey(c *redis.Client, key string) error {
exists := c.Exists(key).Val()
if exists == 0 {
// key does not exist
return nil
}
err := c.Del(key).Err()
if err != nil {
return fmt.Errorf("could not delete key %q: %v", key, err)
}
return nil
}
func printError(err error) {
fmt.Println(err)
fmt.Println()
fmt.Println("Migrate command error")
fmt.Println("Please file an issue on Github at https://github.com/hibiken/asynq/issues/new/choose")
}
func partitionZSetMembersByQueue(c *redis.Client, key string, newKeyFunc func(string) string) error {
zs, err := c.ZRangeWithScores(key, 0, -1).Result()
if err != nil {
return fmt.Errorf("command ZRANGE %s 0 -1 WITHSCORES failed: %v", key, err)
}
for _, z := range zs {
s := cast.ToString(z.Member)
msg, err := base.DecodeMessage(s)
if err != nil {
return fmt.Errorf("could not decode message from %q: %v", key, err)
}
if err := c.ZAdd(newKeyFunc(msg.Queue), &z).Err(); err != nil {
return fmt.Errorf("could not add %v to %q: %v", z, newKeyFunc(msg.Queue))
}
}
if err := deleteKey(c, key); err != nil {
return err
}
return nil
}
func partitionListMembersByQueue(c *redis.Client, key string, newKeyFunc func(string) string) error {
data, err := c.LRange(key, 0, -1).Result()
if err != nil {
return fmt.Errorf("command LRANGE %s 0 -1 failed: %v", key, err)
}
for _, s := range data {
msg, err := base.DecodeMessage(s)
if err != nil {
return fmt.Errorf("could not decode message from %q: %v", key, err)
}
if err := c.LPush(newKeyFunc(msg.Queue), s).Err(); err != nil {
return fmt.Errorf("could not add %v to %q: %v", s, newKeyFunc(msg.Queue))
}
}
if err := deleteKey(c, key); err != nil {
return err
}
return nil
}
type oldTaskMessage struct {
// Unchanged
Type string
Payload map[string]interface{}
ID uuid.UUID
Queue string
Retry int
Retried int
ErrorMsg string
UniqueKey string
// Following fields have changed.
// Deadline specifies the deadline for the task.
// Task won't be processed if it exceeded its deadline.
// The string shoulbe be in RFC3339 format.
//
// time.Time's zero value means no deadline.
Timeout string
// Deadline specifies the deadline for the task.
// Task won't be processed if it exceeded its deadline.
// The string shoulbe be in RFC3339 format.
//
// time.Time's zero value means no deadline.
Deadline string
}
var defaultTimeout = 30 * time.Minute
func convertMessage(old *oldTaskMessage) (*base.TaskMessage, error) {
timeout, err := time.ParseDuration(old.Timeout)
if err != nil {
return nil, fmt.Errorf("could not parse Timeout field of %+v", old)
}
deadline, err := time.Parse(time.RFC3339, old.Deadline)
if err != nil {
return nil, fmt.Errorf("could not parse Deadline field of %+v", old)
}
if timeout == 0 && deadline.IsZero() {
timeout = defaultTimeout
}
if deadline.IsZero() {
// Zero value used to be time.Time{},
// in the new schema zero value is represented by
// zero in Unix time.
deadline = time.Unix(0, 0)
}
return &base.TaskMessage{
Type: old.Type,
Payload: old.Payload,
ID: uuid.New(),
Queue: old.Queue,
Retry: old.Retry,
Retried: old.Retried,
ErrorMsg: old.ErrorMsg,
UniqueKey: old.UniqueKey,
Timeout: int64(timeout.Seconds()),
Deadline: deadline.Unix(),
}, nil
}
func deserialize(s string) (*base.TaskMessage, error) {
// Try deserializing as old message.
d := json.NewDecoder(strings.NewReader(s))
d.UseNumber()
var old *oldTaskMessage
if err := d.Decode(&old); err != nil {
// Try deserializing as new message.
d = json.NewDecoder(strings.NewReader(s))
d.UseNumber()
var msg *base.TaskMessage
if err := d.Decode(&msg); err != nil {
return nil, fmt.Errorf("could not deserialize %s into task message: %v", s, err)
}
return msg, nil
}
return convertMessage(old)
}
func migrateZSet(c *redis.Client, key string) error {
if c.Exists(key).Val() == 0 {
// skip if key doesn't exist.
return nil
}
res, err := c.ZRangeWithScores(key, 0, -1).Result()
if err != nil {
return err
}
var msgs []*redis.Z
for _, z := range res {
s, err := cast.ToStringE(z.Member)
if err != nil {
return fmt.Errorf("could not cast to string: %v", err)
}
msg, err := deserialize(s)
if err != nil {
return err
}
encoded, err := base.EncodeMessage(msg)
if err != nil {
return fmt.Errorf("could not encode message from %q: %v", key, err)
}
msgs = append(msgs, &redis.Z{Score: z.Score, Member: encoded})
}
if err := c.Rename(key, key+":backup").Err(); err != nil {
return fmt.Errorf("could not rename key %q: %v", key, err)
}
if err := c.ZAdd(key, msgs...).Err(); err != nil {
return fmt.Errorf("could not write new messages to %q: %v", key, err)
}
if err := c.Del(key + ":backup").Err(); err != nil {
return fmt.Errorf("could not delete back up key %q: %v", key+":backup", err)
}
return nil
}
func migrateList(c *redis.Client, key string) error {
if c.Exists(key).Val() == 0 {
// skip if key doesn't exist.
return nil
}
res, err := c.LRange(key, 0, -1).Result()
if err != nil {
return err
}
var msgs []interface{}
for _, s := range res {
msg, err := deserialize(s)
if err != nil {
return err
}
encoded, err := base.EncodeMessage(msg)
if err != nil {
return fmt.Errorf("could not encode message from %q: %v", key, err)
}
msgs = append(msgs, encoded)
}
if err := c.Rename(key, key+":backup").Err(); err != nil {
return fmt.Errorf("could not rename key %q: %v", key, err)
}
if err := c.LPush(key, msgs...).Err(); err != nil {
return fmt.Errorf("could not write new messages to %q: %v", key, err)
}
if err := c.Del(key + ":backup").Err(); err != nil {
return fmt.Errorf("could not delete back up key %q: %v", key+":backup", err)
}
return nil
}