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signingstatemachine.go
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/
signingstatemachine.go
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// Copyright Luc Yriarte <luc.yriarte@thingagora.org> 2018
// License: Apache-2.0
package main
import (
"encoding/json"
"github.com/hyperledger/fabric/core/chaincode/shim"
)
type SigningStateMachine struct {
SigningStateMachineModel
}
//
// Storable interface implementation
//
func (self *SigningStateMachine) Put(stub shim.ChaincodeStubInterface, key string) error {
data, err := self.Serialize()
if (err != nil) {
return err
}
return stub.PutState(key, data)
}
func (self *SigningStateMachine) Get(stub shim.ChaincodeStubInterface, key string) error {
data, err := stub.GetState(key);
if (err != nil) {
return err
}
return self.Deserialize(data)
}
//
// Serializable interface implementation
//
func (self *SigningStateMachine) Serialize() ([]byte, error) {
return json.Marshal(self.SigningStateMachineModel)
}
func (self *SigningStateMachine) Deserialize(data []byte) error {
return json.Unmarshal(data, &self.SigningStateMachineModel)
}
//
// SigningStateMachine API implementation
//
func (self *SigningStateMachine) NextState(from int, role string, action string) int {
// Iterate through transition list
for _, trans := range self.SigningStateMachineModel.Transitions {
// If we found a matching transition
if from == trans.From && role == trans.Role && action == trans.Action {
// Return the destination state
return trans.To
}
}
// No valid transition was found
return -1
}