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systemhandler.go
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/
systemhandler.go
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/*
* Copyright 2021 ICON Foundation
*
* 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 icon
import (
"math/big"
"github.com/icon-project/goloop/common/codec"
"github.com/icon-project/goloop/common/containerdb"
"github.com/icon-project/goloop/common/errors"
"github.com/icon-project/goloop/icon/icmodule"
"github.com/icon-project/goloop/module"
"github.com/icon-project/goloop/service/contract"
"github.com/icon-project/goloop/service/eeproxy"
"github.com/icon-project/goloop/service/scoreapi"
"github.com/icon-project/goloop/service/scoreresult"
"github.com/icon-project/goloop/service/state"
"github.com/icon-project/goloop/service/trace"
)
var methodsAllowingExtraParams = map[string]bool{
"registerPRep": true,
"setPRep": true,
}
func allowExtraParams(method string) bool {
yn, _ := methodsAllowingExtraParams[method]
return yn
}
func doNotChargeContractCallStep(method string, revision int) bool {
if revision >= icmodule.RevisionStopICON1Support || revision < icmodule.RevisionIISS {
return false
}
if method == scoreapi.FallbackMethodName && revision < icmodule.RevisionSystemSCORE {
return false
}
return true
}
type CallHandler interface {
contract.AsyncContractHandler
GetMethodName() string
AllowExtra()
DoExecuteAsync(cc contract.CallContext, ch eeproxy.CallContext, store containerdb.BytesStoreState) error
TLogStart()
TLogDone(status error, steps *big.Int, result *codec.TypedObj)
ApplyCallSteps(cc contract.CallContext) error
}
type SystemCallHandler struct {
CallHandler
cc contract.CallContext
log *trace.Logger
revision module.Revision
}
func (h *SystemCallHandler) ExecuteAsync(cc contract.CallContext) (err error) {
h.cc = cc
h.revision = cc.Revision()
h.log = trace.LoggerOf(cc.Logger())
h.TLogStart()
defer func() {
if err != nil {
// do not charge contractCall step for some external methods
if !doNotChargeContractCallStep(h.GetMethodName(), h.revision.Value()) {
// charge contractCall step if preprocessing is failed
if err2 := h.ApplyCallSteps(cc) ; err2 != nil {
err = err2
}
}
h.TLogDone(err, cc.StepUsed(), nil)
}
}()
if h.revision.Value() < icmodule.RevisionSystemSCORE {
if allowExtraParams(h.GetMethodName()) {
h.log.TSystemf("FRAME[%d] allow extra params", cc.FrameID())
h.AllowExtra()
}
if h.GetMethodName() == scoreapi.FallbackMethodName {
h.log.TSystemf("FRAME[%d] system contract is unavailable for fallback", cc.FrameID())
return scoreresult.ContractNotFoundError.New("NoFallback")
}
as := cc.GetAccountState(state.SystemID)
apiInfo, _ := as.APIInfo()
m := apiInfo.GetMethod(h.GetMethodName())
if m != nil && m.IsReadOnly() {
h.log.TSystemf("FRAME[%d] readonly methods cannot be called before rev9", cc.FrameID())
return scoreresult.UnknownFailureError.New("ReadOnlyMethod")
}
defer func() {
if scoreresult.MethodNotPayableError.Equals(err) {
h.log.TSystemf(
"FRAME[%d] result patch from=%v to=%v",
cc.FrameID(),
err,
scoreresult.ErrInvalidParameter,
)
err = errors.WithCode(err, scoreresult.InvalidParameterError)
}
}()
}
if h.revision.Value() < icmodule.RevisionIISS {
defer func() {
if scoreresult.MethodNotFoundError.Equals(err) {
h.log.TSystemf(
"FRAME[%d] result patch from=%v to=%v",
cc.FrameID(),
err,
scoreresult.ErrContractNotFound,
)
err = errors.WithCode(err, scoreresult.ContractNotFoundError)
}
}()
}
return h.CallHandler.DoExecuteAsync(cc, h, nil)
}
func (h *SystemCallHandler) OnResult(status error, steps *big.Int, result *codec.TypedObj) {
if h.revision.Value() < icmodule.RevisionStopICON1Support {
if icmodule.IllegalArgumentError.Equals(status) {
status = errors.WithCode(status, scoreresult.IllegalFormatError)
}
}
h.CallHandler.OnResult(status, steps, result)
}
func newSystemHandler(ch CallHandler) contract.ContractHandler {
return &SystemCallHandler{ CallHandler: ch }
}