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worker_pool_redis.go
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/
worker_pool_redis.go
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package repository
import (
"context"
"encoding/json"
"strings"
"github.com/beam-cloud/beta9/pkg/common"
"github.com/beam-cloud/beta9/pkg/types"
)
type WorkerPoolRedisRepository struct {
rdb *common.RedisClient
lock *common.RedisLock
lockOptions common.RedisLockOptions
}
func NewWorkerPoolRedisRepository(rdb *common.RedisClient) WorkerPoolRepository {
lock := common.NewRedisLock(rdb)
lockOptions := common.RedisLockOptions{TtlS: 10, Retries: 0}
return &WorkerPoolRedisRepository{rdb: rdb, lock: lock, lockOptions: lockOptions}
}
// Get a pool without locking.
// Should only be called by public functions of this struct.
func (r *WorkerPoolRedisRepository) getPool(name string) (*types.WorkerPoolConfig, error) {
bytes, err := r.rdb.Get(context.TODO(), common.RedisKeys.WorkerPoolState(name)).Bytes()
if err != nil {
return nil, err
}
p := &types.WorkerPoolConfig{}
if err := json.Unmarshal(bytes, p); err != nil {
return nil, err
}
return p, nil
}
func (r *WorkerPoolRedisRepository) GetPool(name string) (*types.WorkerPoolConfig, error) {
lockKey := common.RedisKeys.WorkerPoolLock(name)
if err := r.lock.Acquire(context.TODO(), lockKey, r.lockOptions); err != nil {
return nil, err
}
defer r.lock.Release(lockKey)
return r.getPool(name)
}
func (r *WorkerPoolRedisRepository) GetPools() ([]types.WorkerPoolConfig, error) {
keys, err := r.rdb.Scan(context.TODO(), common.RedisKeys.WorkerPoolState("*"))
if err != nil {
return nil, err
}
pools := []types.WorkerPoolConfig{}
for _, key := range keys {
name := strings.Split(key, ":")[2]
pool, err := r.getPool(name)
if err != nil {
return nil, err
}
pools = append(pools, *pool)
}
return pools, nil
}
func (r *WorkerPoolRedisRepository) SetPool(name string, pool types.WorkerPoolConfig) error {
lockKey := common.RedisKeys.WorkerPoolLock(name)
if err := r.lock.Acquire(context.TODO(), lockKey, r.lockOptions); err != nil {
return err
}
defer r.lock.Release(lockKey)
bytes, err := json.Marshal(pool)
if err != nil {
return err
}
return r.rdb.Set(context.TODO(), common.RedisKeys.WorkerPoolState(name), bytes, 0).Err()
}
func (r *WorkerPoolRedisRepository) RemovePool(name string) error {
lockKey := common.RedisKeys.WorkerPoolLock(name)
if err := r.lock.Acquire(context.TODO(), lockKey, r.lockOptions); err != nil {
return err
}
defer r.lock.Release(lockKey)
return r.rdb.Del(context.TODO(), common.RedisKeys.WorkerPoolState(name)).Err()
}
func (r *WorkerPoolRedisRepository) SetPoolLock(name string) error {
err := r.lock.Acquire(context.TODO(), common.RedisKeys.WorkerPoolLock(name), common.RedisLockOptions{TtlS: 10, Retries: 0})
if err != nil {
return err
}
return nil
}
func (r *WorkerPoolRedisRepository) RemovePoolLock(name string) error {
return r.lock.Release(common.RedisKeys.WorkerPoolLock(name))
}