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subscriber.go
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subscriber.go
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package pkg
import (
"errors"
"fmt"
"time"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
)
const (
MaxRetries = 20
RetryInterval = 10 * time.Second
)
func (agg *Aggregator) SubscribeToNewTasks() error {
for retries := 0; retries < MaxRetries; retries++ {
err := agg.tryCreateTaskSubscriber()
if err == nil {
_ = agg.subscribeToNewTasks() // This will block until an error occurs
}
message := fmt.Sprintf("Failed to subscribe to new tasks. Retrying in %v", RetryInterval)
agg.AggregatorConfig.BaseConfig.Logger.Info(message)
time.Sleep(RetryInterval)
}
return errors.New("failed to subscribe to new tasks after max retries")
}
func (agg *Aggregator) subscribeToNewTasks() error {
for {
select {
case err := <-agg.taskSubscriber.Err():
agg.AggregatorConfig.BaseConfig.Logger.Error("Error in subscription", "err", err)
return err
case newTask := <-agg.NewTaskCreatedChan:
agg.AddNewTask(newTask.TaskIndex, newTask.Task)
}
}
}
func (agg *Aggregator) tryCreateTaskSubscriber() error {
var err error
agg.AggregatorConfig.BaseConfig.Logger.Info("Subscribing to Ethereum serviceManager task events")
agg.taskSubscriber, err = agg.avsSubscriber.AvsContractBindings.ServiceManager.WatchNewTaskCreated(&bind.WatchOpts{},
agg.NewTaskCreatedChan, nil)
if err != nil {
agg.AggregatorConfig.BaseConfig.Logger.Info("Failed to create task subscriber", "err", err)
}
return err
}