cic-custodial/cmd/service/tasker.go
Mohammed Sohail e203c49049
major refactor: use proxy contract and gas faucet (see notes)
* remove uncessary tasks and task handlers
* reafctor custodial container
* refactor gas refiller. Gas refiller can queue at a later time to match cooldown
* refactor sub handler to process chain events
2023-03-29 16:10:58 +00:00

81 lines
2.5 KiB
Go

package main
import (
"context"
"time"
"github.com/bsm/redislock"
"github.com/grassrootseconomics/cic-custodial/internal/custodial"
"github.com/grassrootseconomics/cic-custodial/internal/tasker"
"github.com/grassrootseconomics/cic-custodial/internal/tasker/task"
"github.com/grassrootseconomics/cic-custodial/pkg/redis"
"github.com/hibiken/asynq"
)
const (
fixedRetryCount = 25
fixedRetryPeriod = time.Second * 1
)
// Load tasker handlers, injecting any necessary handler dependencies from the system container.
func initTasker(custodialContainer *custodial.Custodial, redisPool *redis.RedisPool) *tasker.TaskerServer {
taskerServerOpts := tasker.TaskerServerOpts{
Concurrency: ko.MustInt("asynq.worker_count"),
IsFailureHandler: isFailureHandler,
Logg: lo,
LogLevel: asynq.InfoLevel,
RedisPool: redisPool,
RetryHandler: retryHandler,
}
taskerServer := tasker.NewTaskerServer(taskerServerOpts)
taskerServer.RegisterMiddlewareStack([]asynq.MiddlewareFunc{
observibilityMiddleware(),
})
taskerServer.RegisterHandlers(tasker.AccountRegisterTask, task.AccountRegisterOnChainProcessor(custodialContainer))
taskerServer.RegisterHandlers(tasker.AccountRefillGasTask, task.AccountRefillGasProcessor(custodialContainer))
taskerServer.RegisterHandlers(tasker.SignTransferTask, task.SignTransfer(custodialContainer))
taskerServer.RegisterHandlers(tasker.DispatchTxTask, task.DispatchTx(custodialContainer))
return taskerServer
}
func isFailureHandler(err error) bool {
switch err {
// Ignore lock contention errors; retry until lock obtain.
case redislock.ErrNotObtained:
return false
default:
return true
}
}
func retryHandler(count int, err error, task *asynq.Task) time.Duration {
if count < fixedRetryCount {
return fixedRetryPeriod
} else {
return asynq.DefaultRetryDelayFunc(count, err, task)
}
}
func observibilityMiddleware() asynq.MiddlewareFunc {
return func(handler asynq.Handler) asynq.Handler {
return asynq.HandlerFunc(func(ctx context.Context, task *asynq.Task) error {
taskId, _ := asynq.GetTaskID(ctx)
err := handler.ProcessTask(ctx, task)
if err != nil && isFailureHandler(err) {
lo.Error("tasker: handler error", "err", err, "task_type", task.Type(), "task_id", taskId)
} else if asynq.IsPanicError(err) {
lo.Error("tasker: handler panic", "err", err, "task_type", task.Type(), "task_id", taskId)
} else {
lo.Info("tasker: process task", "task_type", task.Type(), "task_id", taskId)
}
return err
})
}
}