mirror of https://github.com/certusone/vouch.git
97 lines
3.5 KiB
Go
97 lines
3.5 KiB
Go
// Copyright © 2020 Attestant Limited.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package standard
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import (
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"context"
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"fmt"
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"time"
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"github.com/attestantio/go-eth2-client/spec/phase0"
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"github.com/attestantio/vouch/services/beaconblockproposer"
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)
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// scheduleProposals schedules proposals for the given epoch and validator indices.
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func (s *Service) scheduleProposals(ctx context.Context,
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epoch phase0.Epoch,
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validatorIndices []phase0.ValidatorIndex,
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notCurrentSlot bool,
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) {
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if len(validatorIndices) == 0 {
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// Nothing to do.
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return
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}
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started := time.Now()
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log.Trace().Uint64("epoch", uint64(epoch)).Msg("Scheduling proposals")
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resp, err := s.proposerDutiesProvider.ProposerDuties(ctx, epoch, validatorIndices)
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if err != nil {
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log.Error().Err(err).Msg("Failed to fetch proposer duties")
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return
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}
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log.Trace().Dur("elapsed", time.Since(started)).Int("duties", len(resp)).Msg("Fetched proposer duties")
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// Generate Vouch duties from the response.
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duties := make([]*beaconblockproposer.Duty, 0, len(resp))
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firstSlot := s.chainTimeService.FirstSlotOfEpoch(epoch)
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lastSlot := s.chainTimeService.FirstSlotOfEpoch(epoch+1) - 1
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for _, respDuty := range resp {
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if respDuty.Slot < firstSlot || respDuty.Slot > lastSlot {
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log.Warn().
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Uint64("epoch", uint64(epoch)).
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Uint64("duty_slot", uint64(respDuty.Slot)).
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Msg("Proposer duty has invalid slot for requested epoch; ignoring")
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continue
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}
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duties = append(duties, beaconblockproposer.NewDuty(respDuty.Slot, respDuty.ValidatorIndex))
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}
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log.Trace().Dur("elapsed", time.Since(started)).Int("duties", len(duties)).Msg("Filtered proposer duties")
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currentSlot := s.chainTimeService.CurrentSlot()
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for _, duty := range duties {
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// Do not schedule proposals for past slots (or the current slot if so instructed).
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if duty.Slot() < currentSlot {
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log.Debug().
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Uint64("proposal_slot", uint64(duty.Slot())).
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Uint64("current_slot", uint64(currentSlot)).
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Msg("Beacon block proposal for a past slot; not scheduling")
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continue
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}
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if duty.Slot() == currentSlot && notCurrentSlot {
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log.Debug().
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Uint64("proposal_slot", uint64(duty.Slot())).
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Uint64("current_slot", uint64(currentSlot)).
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Msg("Beacon block proposal for the current slot; not scheduling")
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continue
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}
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go func(duty *beaconblockproposer.Duty) {
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if err := s.beaconBlockProposer.Prepare(ctx, duty); err != nil {
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log.Error().Uint64("proposal_slot", uint64(duty.Slot())).Err(err).Msg("Failed to prepare beacon block proposal")
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return
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}
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if err := s.scheduler.ScheduleJob(ctx,
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fmt.Sprintf("Beacon block proposal for slot %d", duty.Slot()),
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s.chainTimeService.StartOfSlot(duty.Slot()),
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s.beaconBlockProposer.Propose,
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duty,
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); err != nil {
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// Don't return here; we want to try to set up as many proposer jobs as possible.
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log.Error().Err(err).Msg("Failed to schedule beacon block proposal")
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}
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}(duty)
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}
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log.Trace().Dur("elapsed", time.Since(started)).Msg("Scheduled beacon block proposals")
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}
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