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has_pendings.go
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/
has_pendings.go
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//
// Copyright 2019 Insolar Technologies GmbH
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package handle
import (
"context"
"fmt"
"github.com/pkg/errors"
"github.com/insolar/insolar/insolar/flow"
"github.com/insolar/insolar/insolar/payload"
"github.com/insolar/insolar/ledger/light/proc"
)
type HasPendings struct {
dep *proc.Dependencies
meta payload.Meta
passed bool
}
func NewHasPendings(dep *proc.Dependencies, meta payload.Meta, passed bool) *HasPendings {
return &HasPendings{
dep: dep,
meta: meta,
passed: passed,
}
}
func (s *HasPendings) Present(ctx context.Context, f flow.Flow) error {
pl, err := payload.Unmarshal(s.meta.Payload)
if err != nil {
return errors.Wrap(err, "failed to unmarshal HasPendings message")
}
msg, ok := pl.(*payload.HasPendings)
if !ok {
return fmt.Errorf("wrong request type: %T", pl)
}
passIfNotExecutor := !s.passed
jet := proc.NewFetchJet(msg.ObjectID, flow.Pulse(ctx), s.meta, passIfNotExecutor)
s.dep.FetchJet(jet)
if err := f.Procedure(ctx, jet, true); err != nil {
if err == proc.ErrNotExecutor && passIfNotExecutor {
return nil
}
return err
}
objJetID := jet.Result.Jet
hot := proc.NewWaitHot(objJetID, flow.Pulse(ctx), s.meta)
s.dep.WaitHot(hot)
if err := f.Procedure(ctx, hot, false); err != nil {
return err
}
// To ensure, that we have the index. Because index can be on a heavy node.
// If we don't have it and heavy does, HasPendings fails because it should update light's index state.
ensureIdx := proc.NewEnsureIndex(msg.ObjectID, objJetID, s.meta, flow.Pulse(ctx))
s.dep.EnsureIndex(ensureIdx)
if err := f.Procedure(ctx, ensureIdx, false); err != nil {
return err
}
hasPendings := proc.NewHasPendings(s.meta, msg.ObjectID)
s.dep.HasPendings(hasPendings)
return f.Procedure(ctx, hasPendings, false)
}