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casebind.go
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casebind.go
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/*
* Copyright 2019 Insolar Technologies
*
* 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 logicrunner
import (
"bytes"
"context"
"encoding/gob"
"reflect"
"github.com/insolar/insolar/instrumentation/inslogger"
"github.com/insolar/insolar/core"
"github.com/insolar/insolar/core/message"
"github.com/insolar/insolar/core/reply"
"github.com/pkg/errors"
)
type CaseRequest struct {
Parcel core.Parcel
Request core.RecordRef
MessageBus core.MessageBus
Reply core.Reply
Error string
}
// CaseBinder is a whole result of executor efforts on every object it seen on this pulse
type CaseBind struct {
Requests []CaseRequest
}
func NewCaseBind() *CaseBind {
return &CaseBind{Requests: make([]CaseRequest, 0)}
}
func NewCaseBindFromValidateMessage(ctx context.Context, mb core.MessageBus, msg *message.ValidateCaseBind) *CaseBind {
res := &CaseBind{
Requests: make([]CaseRequest, len(msg.Requests)),
}
for i, req := range msg.Requests {
mb, err := mb.NewPlayer(ctx, bytes.NewReader(req.MessageBusTape))
if err != nil {
panic("couldn't read tape: " + err.Error())
}
res.Requests[i] = CaseRequest{
Parcel: req.Parcel,
Request: req.Request,
MessageBus: mb,
Reply: req.Reply,
Error: req.Error,
}
}
return res
}
func NewCaseBindFromExecutorResultsMessage(msg *message.ExecutorResults) *CaseBind {
panic("not implemented")
}
func (cb *CaseBind) getCaseBindForMessage(ctx context.Context) []message.CaseBindRequest {
return make([]message.CaseBindRequest, 0)
// TODO: we don't validate at the moment, just send empty case bind
//
//if cb == nil {
// return make([]message.CaseBindRequest, 0)
//}
//
//requests := make([]message.CaseBindRequest, len(cb.Requests))
//
//for i, req := range cb.Requests {
// var buf bytes.Buffer
// err := req.MessageBus.(core.TapeWriter).WriteTape(ctx, &buf)
// if err != nil {
// panic("couldn't write tape: " + err.Error())
// }
// requests[i] = message.CaseBindRequest{
// Parcel: req.Parcel,
// Request: req.Request,
// MessageBusTape: buf.Bytes(),
// Reply: req.Reply,
// Error: req.Error,
// }
//}
//
//return requests
}
func (cb *CaseBind) ToValidateMessage(ctx context.Context, ref Ref, pulse core.Pulse) *message.ValidateCaseBind {
res := &message.ValidateCaseBind{
RecordRef: ref,
Requests: cb.getCaseBindForMessage(ctx),
Pulse: pulse,
}
return res
}
func (cb *CaseBind) NewRequest(p core.Parcel, request Ref, mb core.MessageBus) *CaseRequest {
res := CaseRequest{
Parcel: p,
Request: request,
MessageBus: mb,
}
cb.Requests = append(cb.Requests, res)
return &cb.Requests[len(cb.Requests)-1]
}
type CaseBindReplay struct {
Pulse core.Pulse
CaseBind CaseBind
Request int
Record int
Steps int
Fail int
}
func NewCaseBindReplay(cb CaseBind) *CaseBindReplay {
return &CaseBindReplay{
CaseBind: cb,
Request: -1,
Record: -1,
}
}
func (r *CaseBindReplay) NextRequest() *CaseRequest {
if r.Request+1 >= len(r.CaseBind.Requests) {
return nil
}
r.Request++
return &r.CaseBind.Requests[r.Request]
}
func (lr *LogicRunner) Validate(ctx context.Context, ref Ref, p core.Pulse, cb CaseBind) (int, error) {
os := lr.UpsertObjectState(ref)
vs := os.StartValidation(ref)
vs.Lock()
defer vs.Unlock()
checker := &ValidationChecker{
lr: lr,
cb: NewCaseBindReplay(cb),
}
vs.Behaviour = checker
for {
request := checker.NextRequest()
if request == nil {
break
}
traceID := "TODO" // FIXME
ctx = inslogger.ContextWithTrace(ctx, traceID)
ctx = core.ContextWithMessageBus(ctx, request.MessageBus)
sender := request.Parcel.GetSender()
vs.Current = &CurrentExecution{
Context: ctx,
Request: &request.Request,
RequesterNode: &sender,
}
rep, err := func() (core.Reply, error) {
vs.Unlock()
defer vs.Lock()
return lr.executeOrValidate(ctx, vs, request.Parcel)
}()
err = vs.Behaviour.Result(rep, err)
if err != nil {
return 0, errors.Wrap(err, "validation step failed")
}
}
return 1, nil
}
func (lr *LogicRunner) HandleValidateCaseBindMessage(ctx context.Context, inmsg core.Parcel) (core.Reply, error) {
ctx = loggerWithTargetID(ctx, inmsg)
inslogger.FromContext(ctx).Debug("LogicRunner.HandleValidateCaseBindMessage starts ...")
msg, ok := inmsg.Message().(*message.ValidateCaseBind)
if !ok {
return nil, errors.New("Execute( ! message.ValidateCaseBindInterface )")
}
err := lr.CheckOurRole(ctx, msg, core.DynamicRoleVirtualValidator)
if err != nil {
return nil, errors.Wrap(err, "[ HandleValidateCaseBindMessage ] can't play role")
}
passedStepsCount, validationError := lr.Validate(
ctx, msg.GetReference(), msg.GetPulse(), *NewCaseBindFromValidateMessage(ctx, lr.MessageBus, msg),
)
errstr := ""
if validationError != nil {
errstr = validationError.Error()
}
_, err = lr.MessageBus.Send(ctx, &message.ValidationResults{
RecordRef: msg.GetReference(),
PassedStepsCount: passedStepsCount,
Error: errstr,
}, nil)
return &reply.OK{}, err
}
func (lr *LogicRunner) HandleValidationResultsMessage(ctx context.Context, inmsg core.Parcel) (core.Reply, error) {
ctx = loggerWithTargetID(ctx, inmsg)
inslogger.FromContext(ctx).Debug("LogicRunner.HandleValidationResultsMessage starts ...")
msg, ok := inmsg.Message().(*message.ValidationResults)
if !ok {
return nil, errors.Errorf("HandleValidationResultsMessage got argument typed %t", inmsg)
}
c := lr.GetConsensus(ctx, msg.RecordRef)
if err := c.AddValidated(ctx, inmsg, msg); err != nil {
return nil, err
}
return &reply.OK{}, nil
}
func (lr *LogicRunner) HandleExecutorResultsMessage(ctx context.Context, inmsg core.Parcel) (core.Reply, error) {
ctx = loggerWithTargetID(ctx, inmsg)
inslogger.FromContext(ctx).Debug("LogicRunner.HandleExecutorResultsMessage starts ...")
msg, ok := inmsg.Message().(*message.ExecutorResults)
if !ok {
return nil, errors.Errorf("HandleValidationResultsMessage got argument typed %t", inmsg)
}
// now we have 2 different types of data in message.HandleExecutorResultsMessage
// one part of it is about consensus
// another one is about prepare state on new executor after pulse
// TODO make it in different goroutines
// prepare state after previous executor
err := lr.prepareObjectState(ctx, msg)
if err != nil {
return &reply.Error{}, err
}
// validation things
// c := lr.GetConsensus(ctx, msg.RecordRef)
// c.AddExecutor(ctx, inmsg, msg)
return &reply.OK{}, nil
}
// ValidationBehaviour is a special object that responsible for validation behavior of other methods.
type ValidationBehaviour interface {
Mode() string
Result(reply core.Reply, err error) error
}
type ValidationSaver struct {
lr *LogicRunner
caseBind *CaseBind
current *CaseRequest
}
func (vb *ValidationSaver) Mode() string {
return "execution"
}
func (vb *ValidationSaver) NewRequest(p core.Parcel, request Ref, mb core.MessageBus) {
vb.current = vb.caseBind.NewRequest(p, request, mb)
}
func (vb *ValidationSaver) Result(reply core.Reply, err error) error {
if vb.current == nil {
return errors.New("result call without request registered")
}
vb.current.Reply = reply
if err != nil {
vb.current.Error = err.Error()
}
return nil
}
type ValidationChecker struct {
lr *LogicRunner
cb *CaseBindReplay
current *CaseRequest
}
func (vb *ValidationChecker) Mode() string {
return "validation"
}
func (vb *ValidationChecker) NextRequest() *CaseRequest {
vb.current = vb.cb.NextRequest()
return vb.current
}
func (vb *ValidationChecker) Result(reply core.Reply, err error) error {
if vb.current == nil {
return errors.New("result call without request registered")
}
// TODO: reflect.DeepEqual is not what we want to go with, we should
// go with HASH comparision
if !reflect.DeepEqual(vb.current.Reply, reply) {
return errors.Errorf("replies arn't equal: expected: %+v, got: %+v, err: %+v", vb.current.Reply, reply, err)
}
if !reflect.DeepEqual(vb.current.Error, err) {
return errors.New("errors arn't equal")
}
return nil
}
func init() {
gob.Register(&CaseRequest{})
gob.Register(&CaseBind{})
}