277 lines
7.1 KiB
Go
277 lines
7.1 KiB
Go
package repository
|
||
|
||
import (
|
||
"context"
|
||
"encoding/json"
|
||
"fmt"
|
||
"strconv"
|
||
"time"
|
||
|
||
"github.com/Wei-Shaw/sub2api/internal/service"
|
||
"github.com/redis/go-redis/v9"
|
||
)
|
||
|
||
const (
|
||
schedulerBucketSetKey = "sched:buckets"
|
||
schedulerOutboxWatermarkKey = "sched:outbox:watermark"
|
||
schedulerAccountPrefix = "sched:acc:"
|
||
schedulerActivePrefix = "sched:active:"
|
||
schedulerReadyPrefix = "sched:ready:"
|
||
schedulerVersionPrefix = "sched:ver:"
|
||
schedulerSnapshotPrefix = "sched:"
|
||
schedulerLockPrefix = "sched:lock:"
|
||
)
|
||
|
||
type schedulerCache struct {
|
||
rdb *redis.Client
|
||
}
|
||
|
||
func NewSchedulerCache(rdb *redis.Client) service.SchedulerCache {
|
||
return &schedulerCache{rdb: rdb}
|
||
}
|
||
|
||
func (c *schedulerCache) GetSnapshot(ctx context.Context, bucket service.SchedulerBucket) ([]*service.Account, bool, error) {
|
||
readyKey := schedulerBucketKey(schedulerReadyPrefix, bucket)
|
||
readyVal, err := c.rdb.Get(ctx, readyKey).Result()
|
||
if err == redis.Nil {
|
||
return nil, false, nil
|
||
}
|
||
if err != nil {
|
||
return nil, false, err
|
||
}
|
||
if readyVal != "1" {
|
||
return nil, false, nil
|
||
}
|
||
|
||
activeKey := schedulerBucketKey(schedulerActivePrefix, bucket)
|
||
activeVal, err := c.rdb.Get(ctx, activeKey).Result()
|
||
if err == redis.Nil {
|
||
return nil, false, nil
|
||
}
|
||
if err != nil {
|
||
return nil, false, err
|
||
}
|
||
|
||
snapshotKey := schedulerSnapshotKey(bucket, activeVal)
|
||
ids, err := c.rdb.ZRange(ctx, snapshotKey, 0, -1).Result()
|
||
if err != nil {
|
||
return nil, false, err
|
||
}
|
||
if len(ids) == 0 {
|
||
return []*service.Account{}, true, nil
|
||
}
|
||
|
||
keys := make([]string, 0, len(ids))
|
||
for _, id := range ids {
|
||
keys = append(keys, schedulerAccountKey(id))
|
||
}
|
||
values, err := c.rdb.MGet(ctx, keys...).Result()
|
||
if err != nil {
|
||
return nil, false, err
|
||
}
|
||
|
||
accounts := make([]*service.Account, 0, len(values))
|
||
for _, val := range values {
|
||
if val == nil {
|
||
return nil, false, nil
|
||
}
|
||
account, err := decodeCachedAccount(val)
|
||
if err != nil {
|
||
return nil, false, err
|
||
}
|
||
accounts = append(accounts, account)
|
||
}
|
||
|
||
return accounts, true, nil
|
||
}
|
||
|
||
func (c *schedulerCache) SetSnapshot(ctx context.Context, bucket service.SchedulerBucket, accounts []service.Account) error {
|
||
activeKey := schedulerBucketKey(schedulerActivePrefix, bucket)
|
||
oldActive, _ := c.rdb.Get(ctx, activeKey).Result()
|
||
|
||
versionKey := schedulerBucketKey(schedulerVersionPrefix, bucket)
|
||
version, err := c.rdb.Incr(ctx, versionKey).Result()
|
||
if err != nil {
|
||
return err
|
||
}
|
||
|
||
versionStr := strconv.FormatInt(version, 10)
|
||
snapshotKey := schedulerSnapshotKey(bucket, versionStr)
|
||
|
||
pipe := c.rdb.Pipeline()
|
||
for _, account := range accounts {
|
||
payload, err := json.Marshal(account)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
pipe.Set(ctx, schedulerAccountKey(strconv.FormatInt(account.ID, 10)), payload, 0)
|
||
}
|
||
if len(accounts) > 0 {
|
||
// 使用序号作为 score，保持数据库返回的排序语义。
|
||
members := make([]redis.Z, 0, len(accounts))
|
||
for idx, account := range accounts {
|
||
members = append(members, redis.Z{
|
||
Score: float64(idx),
|
||
Member: strconv.FormatInt(account.ID, 10),
|
||
})
|
||
}
|
||
pipe.ZAdd(ctx, snapshotKey, members...)
|
||
} else {
|
||
pipe.Del(ctx, snapshotKey)
|
||
}
|
||
pipe.Set(ctx, activeKey, versionStr, 0)
|
||
pipe.Set(ctx, schedulerBucketKey(schedulerReadyPrefix, bucket), "1", 0)
|
||
pipe.SAdd(ctx, schedulerBucketSetKey, bucket.String())
|
||
if _, err := pipe.Exec(ctx); err != nil {
|
||
return err
|
||
}
|
||
|
||
if oldActive != "" && oldActive != versionStr {
|
||
_ = c.rdb.Del(ctx, schedulerSnapshotKey(bucket, oldActive)).Err()
|
||
}
|
||
|
||
return nil
|
||
}
|
||
|
||
func (c *schedulerCache) GetAccount(ctx context.Context, accountID int64) (*service.Account, error) {
|
||
key := schedulerAccountKey(strconv.FormatInt(accountID, 10))
|
||
val, err := c.rdb.Get(ctx, key).Result()
|
||
if err == redis.Nil {
|
||
return nil, nil
|
||
}
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
return decodeCachedAccount(val)
|
||
}
|
||
|
||
func (c *schedulerCache) SetAccount(ctx context.Context, account *service.Account) error {
|
||
if account == nil || account.ID <= 0 {
|
||
return nil
|
||
}
|
||
payload, err := json.Marshal(account)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
key := schedulerAccountKey(strconv.FormatInt(account.ID, 10))
|
||
return c.rdb.Set(ctx, key, payload, 0).Err()
|
||
}
|
||
|
||
func (c *schedulerCache) DeleteAccount(ctx context.Context, accountID int64) error {
|
||
if accountID <= 0 {
|
||
return nil
|
||
}
|
||
key := schedulerAccountKey(strconv.FormatInt(accountID, 10))
|
||
return c.rdb.Del(ctx, key).Err()
|
||
}
|
||
|
||
func (c *schedulerCache) UpdateLastUsed(ctx context.Context, updates map[int64]time.Time) error {
|
||
if len(updates) == 0 {
|
||
return nil
|
||
}
|
||
|
||
keys := make([]string, 0, len(updates))
|
||
ids := make([]int64, 0, len(updates))
|
||
for id := range updates {
|
||
keys = append(keys, schedulerAccountKey(strconv.FormatInt(id, 10)))
|
||
ids = append(ids, id)
|
||
}
|
||
|
||
values, err := c.rdb.MGet(ctx, keys...).Result()
|
||
if err != nil {
|
||
return err
|
||
}
|
||
|
||
pipe := c.rdb.Pipeline()
|
||
for i, val := range values {
|
||
if val == nil {
|
||
continue
|
||
}
|
||
account, err := decodeCachedAccount(val)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
account.LastUsedAt = ptrTime(updates[ids[i]])
|
||
updated, err := json.Marshal(account)
|
||
if err != nil {
|
||
return err
|
||
}
|
||
pipe.Set(ctx, keys[i], updated, 0)
|
||
}
|
||
_, err = pipe.Exec(ctx)
|
||
return err
|
||
}
|
||
|
||
func (c *schedulerCache) TryLockBucket(ctx context.Context, bucket service.SchedulerBucket, ttl time.Duration) (bool, error) {
|
||
key := schedulerBucketKey(schedulerLockPrefix, bucket)
|
||
return c.rdb.SetNX(ctx, key, time.Now().UnixNano(), ttl).Result()
|
||
}
|
||
|
||
func (c *schedulerCache) ListBuckets(ctx context.Context) ([]service.SchedulerBucket, error) {
|
||
raw, err := c.rdb.SMembers(ctx, schedulerBucketSetKey).Result()
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
out := make([]service.SchedulerBucket, 0, len(raw))
|
||
for _, entry := range raw {
|
||
bucket, ok := service.ParseSchedulerBucket(entry)
|
||
if !ok {
|
||
continue
|
||
}
|
||
out = append(out, bucket)
|
||
}
|
||
return out, nil
|
||
}
|
||
|
||
func (c *schedulerCache) GetOutboxWatermark(ctx context.Context) (int64, error) {
|
||
val, err := c.rdb.Get(ctx, schedulerOutboxWatermarkKey).Result()
|
||
if err == redis.Nil {
|
||
return 0, nil
|
||
}
|
||
if err != nil {
|
||
return 0, err
|
||
}
|
||
id, err := strconv.ParseInt(val, 10, 64)
|
||
if err != nil {
|
||
return 0, err
|
||
}
|
||
return id, nil
|
||
}
|
||
|
||
func (c *schedulerCache) SetOutboxWatermark(ctx context.Context, id int64) error {
|
||
return c.rdb.Set(ctx, schedulerOutboxWatermarkKey, strconv.FormatInt(id, 10), 0).Err()
|
||
}
|
||
|
||
func schedulerBucketKey(prefix string, bucket service.SchedulerBucket) string {
|
||
return fmt.Sprintf("%s%d:%s:%s", prefix, bucket.GroupID, bucket.Platform, bucket.Mode)
|
||
}
|
||
|
||
func schedulerSnapshotKey(bucket service.SchedulerBucket, version string) string {
|
||
return fmt.Sprintf("%s%d:%s:%s:v%s", schedulerSnapshotPrefix, bucket.GroupID, bucket.Platform, bucket.Mode, version)
|
||
}
|
||
|
||
func schedulerAccountKey(id string) string {
|
||
return schedulerAccountPrefix + id
|
||
}
|
||
|
||
func ptrTime(t time.Time) *time.Time {
|
||
return &t
|
||
}
|
||
|
||
func decodeCachedAccount(val any) (*service.Account, error) {
|
||
var payload []byte
|
||
switch raw := val.(type) {
|
||
case string:
|
||
payload = []byte(raw)
|
||
case []byte:
|
||
payload = raw
|
||
default:
|
||
return nil, fmt.Errorf("unexpected account cache type: %T", val)
|
||
}
|
||
var account service.Account
|
||
if err := json.Unmarshal(payload, &account); err != nil {
|
||
return nil, err
|
||
}
|
||
return &account, nil
|
||
}
|