125 lines
3.1 KiB
Go
125 lines
3.1 KiB
Go
/*
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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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// Sleeper chaincode sleeps and works with one state variable
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// Init - 1 param, a sleep time in millisecs
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// Invoke - 4 or 3 params, "put" or "get", value to set and sleep time in millisecs
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//
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// Sleeper can be used to test the "chaincode.executetimeout" property
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import (
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"fmt"
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"strconv"
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"time"
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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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// SleeperChaincode example simple Chaincode implementation
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type SleeperChaincode struct {
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}
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func (t *SleeperChaincode) sleep(sleepTime string) {
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st, _ := strconv.Atoi(sleepTime)
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if st >= 0 {
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time.Sleep(time.Duration(st) * time.Millisecond)
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}
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}
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// Init initializes chaincode...all it does is sleep a bi
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func (t *SleeperChaincode) Init(stub shim.ChaincodeStubInterface) pb.Response {
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args := stub.GetStringArgs()
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if len(args) != 1 {
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return shim.Error("Incorrect number of arguments. Expecting 1")
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}
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sleepTime := args[0]
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t.sleep(sleepTime)
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return shim.Success(nil)
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}
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// Invoke sets key/value and sleeps a bit
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func (t *SleeperChaincode) Invoke(stub shim.ChaincodeStubInterface) pb.Response {
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function, args := stub.GetFunctionAndParameters()
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if function == "put" {
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if len(args) != 3 {
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return shim.Error("Incorrect number of arguments. Expecting 3")
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}
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// Make payment of X units from A to B
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return t.invoke(stub, args)
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} else if function == "get" {
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if len(args) != 2 {
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return shim.Error("Incorrect number of arguments. Expecting 2")
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}
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// the old "Query" is now implemtned in invoke
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return t.query(stub, args)
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}
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return shim.Error("Invalid invoke function name. Expecting \"put\" or \"get\"")
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}
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// Transaction makes payment of X units from A to B
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func (t *SleeperChaincode) invoke(stub shim.ChaincodeStubInterface, args []string) pb.Response {
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// set state
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key := args[0]
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val := args[1]
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err := stub.PutState(key, []byte(val))
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if err != nil {
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return shim.Error(err.Error())
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}
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sleepTime := args[2]
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//sleep for a bit
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t.sleep(sleepTime)
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return shim.Success([]byte("OK"))
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}
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// query callback representing the query of a chaincode
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func (t *SleeperChaincode) query(stub shim.ChaincodeStubInterface, args []string) pb.Response {
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key := args[0]
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// Get the state from the ledger
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val, err := stub.GetState(key)
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if err != nil {
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return shim.Error(err.Error())
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}
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sleepTime := args[1]
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//sleep for a bit
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t.sleep(sleepTime)
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return shim.Success(val)
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}
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func main() {
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err := shim.Start(new(SleeperChaincode))
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if err != nil {
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fmt.Printf("Error starting Sleeper chaincode: %s", err)
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}
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}
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