diff --git a/chaincode/fabcar/external/.dockerignore b/chaincode/fabcar/external/.dockerignore new file mode 100644 index 0000000000..61260e58c1 --- /dev/null +++ b/chaincode/fabcar/external/.dockerignore @@ -0,0 +1,5 @@ +chaincode.env* +*.json +*.md +*.tar.gz +*.tgz diff --git a/chaincode/fabcar/external/.gitignore b/chaincode/fabcar/external/.gitignore new file mode 100644 index 0000000000..3f4b4e1bfc --- /dev/null +++ b/chaincode/fabcar/external/.gitignore @@ -0,0 +1,4 @@ +chaincode.env +connection.json +*.tar.gz +*.tgz \ No newline at end of file diff --git a/chaincode/fabcar/external/Dockerfile b/chaincode/fabcar/external/Dockerfile new file mode 100644 index 0000000000..ef427a81fa --- /dev/null +++ b/chaincode/fabcar/external/Dockerfile @@ -0,0 +1,17 @@ +# Copyright IBM Corp. All Rights Reserved. +# +# SPDX-License-Identifier: Apache-2.0 + +ARG GO_VER=1.13.8 +ARG ALPINE_VER=3.10 + +FROM golang:${GO_VER}-alpine${ALPINE_VER} + +WORKDIR /go/src/github.com/hyperledger/fabric-samples/chaincode/fabcar/external +COPY . . + +RUN go get -d -v ./... +RUN go install -v ./... + +EXPOSE 9999 +CMD ["external"] diff --git a/chaincode/fabcar/external/README.md b/chaincode/fabcar/external/README.md new file mode 100644 index 0000000000..6d2954eb92 --- /dev/null +++ b/chaincode/fabcar/external/README.md @@ -0,0 +1,55 @@ +# FabCar as an external service + +See the "Chaincode as an external service" documentation for running chaincode as an external service. +This includes details of the external builder and launcher scripts which will peers in your Fabric network will require. + +The FabCar chaincode requires two environment variables to run, `CHAINCODE_SERVER_ADDRESS` and `CHAINCODE_ID`, which are described in the `chaincode.env.example` file. Copy this file to `chaincode.env` before continuing. + +**Note:** each organization in a Fabric network will need to follow the instructions below to host their own instance of the FabCar external service. + +## Packaging and installing + +Make sure the value of `CHAINCODE_SERVER_ADDRESS` in `chaincode.env` is correct for the FabCar external service you will be running. + +The peer needs a `connection.json` configuration file so that it can connect to the external FabCar service. +Use the `CHAINCODE_SERVER_ADDRESS` value in `chaincode.env` to create the `connection.json` file with the following command (requires [jq](https://stedolan.github.io/jq/)): + +``` +env $(cat chaincode.env | grep -v "#" | xargs) jq -n '{"address":env.CHAINCODE_SERVER_ADDRESS,"dial_timeout": "10s","tls_required": false}' > connection.json +``` + +Add this file to a `code.tar.gz` archive ready for adding to a FabCar external service package: + +``` +tar cfz code.tar.gz connection.json +``` + +Package the FabCar external service using the supplied `metadata.json` file: + +``` +tar cfz fabcar-pkg.tgz metadata.json code.tar.gz +``` + +Install the `fabcar-pkg.tgz` chaincode as usual, for example: + +``` +peer lifecycle chaincode install ./fabcar-pkg.tgz +``` + +## Running the FabCar external service + +To run the service in a container, build a FabCar docker image: + +``` +docker build -t hyperledger/fabcar-sample . +``` + +Edit the `chaincode.env` file to configure the `CHAINCODE_ID` variable before starting a FabCar container using the following command: + +``` +docker run -it --rm --name fabcar.org1.example.com --hostname fabcar.org1.example.com --env-file chaincode.env --network=net_test hyperledger/fabcar-sample +``` + +## Starting the FabCar external service + +Complete the remaining lifecycle steps to start the FabCar chaincode! diff --git a/chaincode/fabcar/external/chaincode.env.example b/chaincode/fabcar/external/chaincode.env.example new file mode 100644 index 0000000000..ea3ba5282c --- /dev/null +++ b/chaincode/fabcar/external/chaincode.env.example @@ -0,0 +1,8 @@ +# CHAINCODE_SERVER_ADDRESS must be set to the host and port where the peer can +# connect to the chaincode server +CHAINCODE_SERVER_ADDRESS=fabcar.org1.example.com:9999 + +# CHAINCODE_ID must be set to the Package ID that is assigned to the chaincode +# on install. The `peer lifecycle chaincode queryinstalled` command can be +# used to get the ID after install if required +CHAINCODE_ID=fabcar:... diff --git a/chaincode/fabcar/external/fabcar.go b/chaincode/fabcar/external/fabcar.go new file mode 100644 index 0000000000..22a59ac843 --- /dev/null +++ b/chaincode/fabcar/external/fabcar.go @@ -0,0 +1,187 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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" + "os" + + "github.com/hyperledger/fabric-chaincode-go/shim" + "github.com/hyperledger/fabric-contract-api-go/contractapi" +) + +type ServerConfig struct { + CCID string + Address string +} + +// SmartContract provides functions for managing a car +type SmartContract struct { + contractapi.Contract +} + +// Car describes basic details of what makes up a car +type Car struct { + Make string `json:"make"` + Model string `json:"model"` + Colour string `json:"colour"` + Owner string `json:"owner"` +} + +// QueryResult structure used for handling result of query +type QueryResult struct { + Key string `json:"Key"` + Record *Car +} + +// InitLedger adds a base set of cars to the ledger +func (s *SmartContract) InitLedger(ctx contractapi.TransactionContextInterface) error { + cars := []Car{ + Car{Make: "Toyota", Model: "Prius", Colour: "blue", Owner: "Tomoko"}, + Car{Make: "Ford", Model: "Mustang", Colour: "red", Owner: "Brad"}, + Car{Make: "Hyundai", Model: "Tucson", Colour: "green", Owner: "Jin Soo"}, + Car{Make: "Volkswagen", Model: "Passat", Colour: "yellow", Owner: "Max"}, + Car{Make: "Tesla", Model: "S", Colour: "black", Owner: "Adriana"}, + Car{Make: "Peugeot", Model: "205", Colour: "purple", Owner: "Michel"}, + Car{Make: "Chery", Model: "S22L", Colour: "white", Owner: "Aarav"}, + Car{Make: "Fiat", Model: "Punto", Colour: "violet", Owner: "Pari"}, + Car{Make: "Tata", Model: "Nano", Colour: "indigo", Owner: "Valeria"}, + Car{Make: "Holden", Model: "Barina", Colour: "brown", Owner: "Shotaro"}, + } + + for i, car := range cars { + carAsBytes, _ := json.Marshal(car) + err := ctx.GetStub().PutState("CAR"+strconv.Itoa(i), carAsBytes) + + if err != nil { + return fmt.Errorf("Failed to put to world state. %s", err.Error()) + } + } + + return nil +} + +// CreateCar adds a new car to the world state with given details +func (s *SmartContract) CreateCar(ctx contractapi.TransactionContextInterface, carNumber string, make string, model string, colour string, owner string) error { + car := Car{ + Make: make, + Model: model, + Colour: colour, + Owner: owner, + } + + carAsBytes, _ := json.Marshal(car) + + return ctx.GetStub().PutState(carNumber, carAsBytes) +} + +// QueryCar returns the car stored in the world state with given id +func (s *SmartContract) QueryCar(ctx contractapi.TransactionContextInterface, carNumber string) (*Car, error) { + carAsBytes, err := ctx.GetStub().GetState(carNumber) + + if err != nil { + return nil, fmt.Errorf("Failed to read from world state. %s", err.Error()) + } + + if carAsBytes == nil { + return nil, fmt.Errorf("%s does not exist", carNumber) + } + + car := new(Car) + _ = json.Unmarshal(carAsBytes, car) + + return car, nil +} + +// QueryAllCars returns all cars found in world state +func (s *SmartContract) QueryAllCars(ctx contractapi.TransactionContextInterface) ([]QueryResult, error) { + startKey := "CAR0" + endKey := "CAR99" + + resultsIterator, err := ctx.GetStub().GetStateByRange(startKey, endKey) + + if err != nil { + return nil, err + } + defer resultsIterator.Close() + + results := []QueryResult{} + + for resultsIterator.HasNext() { + queryResponse, err := resultsIterator.Next() + + if err != nil { + return nil, err + } + + car := new(Car) + _ = json.Unmarshal(queryResponse.Value, car) + + queryResult := QueryResult{Key: queryResponse.Key, Record: car} + results = append(results, queryResult) + } + + return results, nil +} + +// ChangeCarOwner updates the owner field of car with given id in world state +func (s *SmartContract) ChangeCarOwner(ctx contractapi.TransactionContextInterface, carNumber string, newOwner string) error { + car, err := s.QueryCar(ctx, carNumber) + + if err != nil { + return err + } + + car.Owner = newOwner + + carAsBytes, _ := json.Marshal(car) + + return ctx.GetStub().PutState(carNumber, carAsBytes) +} + +func main() { + // See chaincode.env.example + config := ServerConfig{ + CCID: os.Getenv("CHAINCODE_ID"), + Address: os.Getenv("CHAINCODE_SERVER_ADDRESS"), + } + + chaincode, err := contractapi.NewChaincode(new(SmartContract)) + + if err != nil { + fmt.Printf("Error create fabcar chaincode: %s", err.Error()) + return + } + + server := &shim.ChaincodeServer{ + CCID: config.CCID, + Address: config.Address, + CC: chaincode, + TLSProps: shim.TLSProperties{ + Disabled: true, + }, + } + + if err := server.Start(); err != nil { + fmt.Printf("Error starting fabcar chaincode: %s", err.Error()) + } +} diff --git a/chaincode/fabcar/external/go.mod b/chaincode/fabcar/external/go.mod new file mode 100644 index 0000000000..9c730d22c2 --- /dev/null +++ b/chaincode/fabcar/external/go.mod @@ -0,0 +1,5 @@ +module github.com/hyperledger/fabric-samples/chaincode/fabcar/external + +go 1.13 + +require github.com/hyperledger/fabric-contract-api-go v1.0.0 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