73 lines
2.0 KiB
Go
73 lines
2.0 KiB
Go
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/*
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Copyright IBM Corp. 2016 All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"fmt"
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"strings"
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"github.com/hyperledger/fabric/core/chaincode/shim"
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pb "github.com/hyperledger/fabric/protos/peer"
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)
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// PassthruChaincode passes thru invoke and query to another chaincode where
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// called ChaincodeID = function
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// called chaincode's function = args[0]
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// called chaincode's args = args[1:]
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type PassthruChaincode struct {
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}
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func toChaincodeArgs(args ...string) [][]byte {
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bargs := make([][]byte, len(args))
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for i, arg := range args {
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bargs[i] = []byte(arg)
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}
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return bargs
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}
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//Init func will return error if function has string "error" anywhere
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func (p *PassthruChaincode) Init(stub shim.ChaincodeStubInterface) pb.Response {
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function, _ := stub.GetFunctionAndParameters()
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if strings.Index(function, "error") >= 0 {
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return shim.Error(function)
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}
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return shim.Success([]byte(function))
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}
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//helper
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func (p *PassthruChaincode) iq(stub shim.ChaincodeStubInterface, function string, args []string) pb.Response {
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if function == "" {
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return shim.Error("Chaincode ID not provided")
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}
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chaincodeID := function
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return stub.InvokeChaincode(chaincodeID, toChaincodeArgs(args...), "")
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}
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// Invoke passes through the invoke call
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func (p *PassthruChaincode) Invoke(stub shim.ChaincodeStubInterface) pb.Response {
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function, args := stub.GetFunctionAndParameters()
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return p.iq(stub, function, args)
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}
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func main() {
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err := shim.Start(new(PassthruChaincode))
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if err != nil {
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fmt.Printf("Error starting Passthru chaincode: %s", err)
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}
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}
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