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This change modifies example_cc to be resetable. This allows integration tests to reset the state without instantiating a new chaincode. The CCPackager unit test data is also deceoupled from the integration test fixtures. Change-Id: Iba2e2535af0111471c8aaedcb65bbb717104051e Signed-off-by: Troy Ronda <troy@troyronda.com>
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pkg/fab/ccpackager/gopackager/testdata/src/github.com/example_cc/example_cc.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,272 @@ | ||
| /* | ||
| Copyright IBM Corp. 2016 All Rights Reserved. | ||
| 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 main | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "strconv" | ||
|
|
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| "github.com/hyperledger/fabric/core/chaincode/shim" | ||
| pb "github.com/hyperledger/fabric/protos/peer" | ||
| ) | ||
|
|
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| // SimpleChaincode example simple Chaincode implementation | ||
| type SimpleChaincode struct { | ||
| } | ||
|
|
||
| // Init ... | ||
| func (t *SimpleChaincode) Init(stub shim.ChaincodeStubInterface) pb.Response { | ||
| txID := stub.GetTxID() | ||
| fmt.Printf("[txID %s] ########### example_cc Init ###########\n", txID) | ||
| _, args := stub.GetFunctionAndParameters() | ||
| var A, B string // Entities | ||
| var Aval, Bval int // Asset holdings | ||
| var err error | ||
|
|
||
| if len(args) != 4 { | ||
| return shim.Error("Incorrect number of arguments. Expecting 4") | ||
| } | ||
|
|
||
| // Initialize the chaincode | ||
| A = args[0] | ||
| Aval, err = strconv.Atoi(args[1]) | ||
| if err != nil { | ||
| return shim.Error("Expecting integer value for asset holding") | ||
| } | ||
| B = args[2] | ||
| Bval, err = strconv.Atoi(args[3]) | ||
| if err != nil { | ||
| return shim.Error("Expecting integer value for asset holding") | ||
| } | ||
| fmt.Printf("[txID %s] Aval = %d, Bval = %d\n", txID, Aval, Bval) | ||
|
|
||
| // Write the state to the ledger | ||
| err = stub.PutState(A, []byte(strconv.Itoa(Aval))) | ||
| if err != nil { | ||
| return shim.Error(err.Error()) | ||
| } | ||
|
|
||
| err = stub.PutState(B, []byte(strconv.Itoa(Bval))) | ||
| if err != nil { | ||
| return shim.Error(err.Error()) | ||
| } | ||
|
|
||
| if transientMap, err := stub.GetTransient(); err == nil { | ||
| if transientData, ok := transientMap["result"]; ok { | ||
| fmt.Printf("[txID %s] Transient data in 'init' : %s\n", txID, transientData) | ||
| return shim.Success(transientData) | ||
| } | ||
| } | ||
| return shim.Success(nil) | ||
|
|
||
| } | ||
|
|
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| // Query ... | ||
| func (t *SimpleChaincode) Query(stub shim.ChaincodeStubInterface) pb.Response { | ||
| return shim.Error("Unknown supported call") | ||
| } | ||
|
|
||
| // Invoke ... | ||
| // Transaction makes payment of X units from A to B | ||
| func (t *SimpleChaincode) Invoke(stub shim.ChaincodeStubInterface) pb.Response { | ||
| fmt.Printf("[txID %s] ########### example_cc Invoke ###########\n", stub.GetTxID()) | ||
| function, args := stub.GetFunctionAndParameters() | ||
|
|
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| if function == "invokecc" { | ||
| return t.invokeCC(stub, args) | ||
| } | ||
|
|
||
| if function != "invoke" { | ||
| return shim.Error("Unknown function call") | ||
| } | ||
|
|
||
| if len(args) < 2 { | ||
| return shim.Error("Incorrect number of arguments. Expecting at least 2") | ||
| } | ||
|
|
||
| if args[0] == "delete" { | ||
| // Deletes an entity from its state | ||
| return t.delete(stub, args) | ||
| } | ||
|
|
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| if args[0] == "query" { | ||
| // queries an entity state | ||
| return t.query(stub, args) | ||
| } | ||
| if args[0] == "move" { | ||
| eventID := "testEvent" | ||
| if len(args) >= 5 { | ||
| eventID = args[4] | ||
| } | ||
| if err := stub.SetEvent(eventID, []byte("Test Payload")); err != nil { | ||
| return shim.Error("Unable to set CC event: testEvent. Aborting transaction ...") | ||
| } | ||
| return t.move(stub, args) | ||
| } | ||
| return shim.Error("Unknown action, check the first argument, must be one of 'delete', 'query', or 'move'") | ||
| } | ||
|
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| func (t *SimpleChaincode) move(stub shim.ChaincodeStubInterface, args []string) pb.Response { | ||
| txID := stub.GetTxID() | ||
| // must be an invoke | ||
| var A, B string // Entities | ||
| var Aval, Bval int // Asset holdings | ||
| var X int // Transaction value | ||
| var err error | ||
| if len(args) < 4 { | ||
| return shim.Error("Incorrect number of arguments. Expecting 4, function followed by 2 names and 1 value") | ||
| } | ||
|
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| A = args[1] | ||
| B = args[2] | ||
|
|
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| // Get the state from the ledger | ||
| // TODO: will be nice to have a GetAllState call to ledger | ||
| Avalbytes, err := stub.GetState(A) | ||
| if err != nil { | ||
| return shim.Error("Failed to get state") | ||
| } | ||
| if Avalbytes == nil { | ||
| return shim.Error("Entity not found") | ||
| } | ||
| Aval, _ = strconv.Atoi(string(Avalbytes)) | ||
|
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| Bvalbytes, err := stub.GetState(B) | ||
| if err != nil { | ||
| return shim.Error("Failed to get state") | ||
| } | ||
| if Bvalbytes == nil { | ||
| return shim.Error("Entity not found") | ||
| } | ||
| Bval, _ = strconv.Atoi(string(Bvalbytes)) | ||
|
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| // Perform the execution | ||
| X, err = strconv.Atoi(args[3]) | ||
| if err != nil { | ||
| return shim.Error("Invalid transaction amount, expecting a integer value") | ||
| } | ||
| Aval = Aval - X | ||
| Bval = Bval + X | ||
| fmt.Printf("[txID %s] Aval = %d, Bval = %d\n", txID, Aval, Bval) | ||
|
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| // Write the state back to the ledger | ||
| err = stub.PutState(A, []byte(strconv.Itoa(Aval))) | ||
| if err != nil { | ||
| return shim.Error(err.Error()) | ||
| } | ||
|
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| err = stub.PutState(B, []byte(strconv.Itoa(Bval))) | ||
| if err != nil { | ||
| return shim.Error(err.Error()) | ||
| } | ||
|
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| if transientMap, err := stub.GetTransient(); err == nil { | ||
| if transientData, ok := transientMap["result"]; ok { | ||
| fmt.Printf("[txID %s] Transient data in 'move' : %s\n", txID, transientData) | ||
| return shim.Success(transientData) | ||
| } | ||
| } | ||
| return shim.Success(nil) | ||
| } | ||
|
|
||
| // Deletes an entity from state | ||
| func (t *SimpleChaincode) delete(stub shim.ChaincodeStubInterface, args []string) pb.Response { | ||
| if len(args) != 1 { | ||
| return shim.Error("Incorrect number of arguments. Expecting 1") | ||
| } | ||
|
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| A := args[1] | ||
|
|
||
| // Delete the key from the state in ledger | ||
| err := stub.DelState(A) | ||
| if err != nil { | ||
| return shim.Error("Failed to delete state") | ||
| } | ||
|
|
||
| return shim.Success(nil) | ||
| } | ||
|
|
||
| // Query callback representing the query of a chaincode | ||
| func (t *SimpleChaincode) query(stub shim.ChaincodeStubInterface, args []string) pb.Response { | ||
| var A string // Entities | ||
| var err error | ||
|
|
||
| if len(args) != 2 { | ||
| return shim.Error("Incorrect number of arguments. Expecting name of the person to query") | ||
| } | ||
|
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| A = args[1] | ||
|
|
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| // Get the state from the ledger | ||
| Avalbytes, err := stub.GetState(A) | ||
| if err != nil { | ||
| jsonResp := "{\"Error\":\"Failed to get state for " + A + "\"}" | ||
| return shim.Error(jsonResp) | ||
| } | ||
|
|
||
| if Avalbytes == nil { | ||
| jsonResp := "{\"Error\":\"Nil amount for " + A + "\"}" | ||
| return shim.Error(jsonResp) | ||
| } | ||
|
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| jsonResp := "{\"Name\":\"" + A + "\",\"Amount\":\"" + string(Avalbytes) + "\"}" | ||
| fmt.Printf("[txID %s] Query Response:%s\n", stub.GetTxID(), jsonResp) | ||
| return shim.Success(Avalbytes) | ||
| } | ||
|
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||
| type argStruct struct { | ||
| Args []string `json:"Args"` | ||
| } | ||
|
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| func asBytes(args []string) [][]byte { | ||
| bytes := make([][]byte, len(args)) | ||
| for i, arg := range args { | ||
| bytes[i] = []byte(arg) | ||
| } | ||
| return bytes | ||
| } | ||
|
|
||
| // invokeCC invokes another chaincode | ||
| // arg0: ID of chaincode to invoke | ||
| // arg1: Chaincode arguments in the form: {"Args": ["arg0", "arg1",...]} | ||
| func (t *SimpleChaincode) invokeCC(stub shim.ChaincodeStubInterface, args []string) pb.Response { | ||
| if len(args) < 2 { | ||
| return shim.Error("Incorrect number of arguments. Expecting ID of chaincode to invoke and args") | ||
| } | ||
|
|
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| ccID := args[0] | ||
| invokeArgsJSON := args[1] | ||
|
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| argStruct := argStruct{} | ||
| if err := json.Unmarshal([]byte(invokeArgsJSON), &argStruct); err != nil { | ||
| return shim.Error(fmt.Sprintf("Invalid invoke args: %s", err)) | ||
| } | ||
|
|
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| if err := stub.PutState(stub.GetTxID()+"_invokedcc", []byte(ccID)); err != nil { | ||
| return shim.Error(fmt.Sprintf("Error putting state: %s", err)) | ||
| } | ||
|
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| return stub.InvokeChaincode(ccID, asBytes(argStruct.Args), "") | ||
| } | ||
|
|
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| func main() { | ||
| err := shim.Start(new(SimpleChaincode)) | ||
| if err != nil { | ||
| fmt.Printf("Error starting Simple chaincode: %s", err) | ||
| } | ||
| } |
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