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migration_address.go
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/
migration_address.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 collecting
import (
"github.com/insolar/insolar/insolar"
"github.com/insolar/insolar/insolar/record"
"github.com/insolar/insolar/logicrunner/builtin/contract/migrationshard"
proxyShard "github.com/insolar/insolar/logicrunner/builtin/proxy/migrationshard"
"github.com/insolar/observer/internal/app/observer"
)
type MigrationAddressCollector struct {
results observer.ResultCollector
}
func NewMigrationAddressesCollector() *MigrationAddressCollector {
results := NewResultCollector(isAddMigrationAddresses, successResult)
return &MigrationAddressCollector{
results: results,
}
}
func (c *MigrationAddressCollector) Collect(rec *observer.Record) []*observer.MigrationAddress {
if rec == nil {
return nil
}
// This code block collects addresses from incoming request.
couple := c.results.Collect(rec)
if couple != nil {
result := couple.Result
if !result.IsSuccess() {
return nil
}
request := couple.Request
params := &addAddresses{}
request.ParseMemberContractCallParams(params)
addresses := []*observer.MigrationAddress{}
for _, addr := range params.MigrationAddresses {
addresses = append(addresses, &observer.MigrationAddress{
Addr: addr,
Pulse: request.ID.Pulse(),
Wasted: false,
})
}
return addresses
}
// This code block collects addresses from genesis record.
activate := observer.CastToActivate(rec)
if !activate.IsActivate() {
return nil
}
act := activate.Virtual.GetActivate()
if !isMigrationShardActivate(act) {
return nil
}
shard := migrationShardActivate(act)
addresses := []*observer.MigrationAddress{}
for _, addr := range shard {
addresses = append(addresses, &observer.MigrationAddress{
Addr: addr,
Pulse: rec.ID.Pulse(),
Wasted: false,
})
}
return addresses
}
type addAddresses struct {
MigrationAddresses []string `json:"migrationAddresses"`
}
func isMigrationShardActivate(act *record.Activate) bool {
return act.Image.Equal(*proxyShard.PrototypeReference)
}
func migrationShardActivate(act *record.Activate) []string {
if act.Memory == nil {
return []string{}
}
shard := &migrationshard.MigrationShard{}
err := insolar.Deserialize(act.Memory, shard)
if err != nil {
return []string{}
}
return shard.FreeMigrationAddresses
}
func isAddMigrationAddresses(chain interface{}) bool {
request := observer.CastToRequest(chain)
if !request.IsIncoming() {
return false
}
if !request.IsMemberCall() {
return false
}
args := request.ParseMemberCallArguments()
return args.Params.CallSite == "migration.addAddresses"
}