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[FAB-3073] SDK Go - Move utility functions
Change-Id: I060f1423465a8568ddbbad425bb54a8e4bc2197d Signed-off-by: Sandra Vrtikapa <sandra.vrtikapa@securekey.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,207 @@ | ||
| /* | ||
| Copyright SecureKey Technologies Inc. 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 helpers | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io/ioutil" | ||
| "math/rand" | ||
| "os" | ||
| "time" | ||
|
|
||
| "github.com/hyperledger/fabric-sdk-go/config" | ||
|
|
||
| fabricClient "github.com/hyperledger/fabric-sdk-go/fabric-client" | ||
| "github.com/hyperledger/fabric-sdk-go/fabric-client/events" | ||
| "github.com/hyperledger/fabric-sdk-go/fabric-client/util" | ||
| "github.com/op/go-logging" | ||
| ) | ||
|
|
||
| var origGoPath = os.Getenv("GOPATH") | ||
| var logger = logging.MustGetLogger("fabric_sdk_go") | ||
|
|
||
| // GetChain initializes and returns a chain based on config | ||
| func GetChain(client fabricClient.Client, chainID string) (fabricClient.Chain, error) { | ||
|
|
||
| chain, err := client.NewChain(chainID) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("NewChain return error: %v", err) | ||
| } | ||
| orderer, err := fabricClient.CreateNewOrderer(fmt.Sprintf("%s:%s", config.GetOrdererHost(), config.GetOrdererPort()), | ||
| config.GetOrdererTLSCertificate(), config.GetOrdererTLSServerHostOverride()) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("CreateNewOrderer return error: %v", err) | ||
| } | ||
| chain.AddOrderer(orderer) | ||
|
|
||
| for _, p := range config.GetPeersConfig() { | ||
| endorser, err := fabricClient.CreateNewPeer(fmt.Sprintf("%s:%s", p.Host, p.Port), p.TLSCertificate, p.TLSServerHostOverride) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("CreateNewPeer return error: %v", err) | ||
| } | ||
| chain.AddPeer(endorser) | ||
| if p.Primary { | ||
| chain.SetPrimaryPeer(endorser) | ||
| } | ||
| } | ||
|
|
||
| return chain, nil | ||
| } | ||
|
|
||
| // SendInstallCC Sends an install proposal to one or more endorsing peers. | ||
| func SendInstallCC(chain fabricClient.Chain, chainCodeID string, chainCodePath string, chainCodeVersion string, chaincodePackage []byte, targets []fabricClient.Peer, deployPath string) error { | ||
| ChangeGOPATHToDeploy(deployPath) | ||
| transactionProposalResponse, _, err := chain.SendInstallProposal(chainCodeID, chainCodePath, chainCodeVersion, chaincodePackage, targets) | ||
| ResetGOPATH() | ||
|
|
||
| if err != nil { | ||
| return fmt.Errorf("SendInstallProposal return error: %v", err) | ||
| } | ||
|
|
||
| for _, v := range transactionProposalResponse { | ||
| if v.Err != nil { | ||
| return fmt.Errorf("SendInstallProposal Endorser %s return error: %v", v.Endorser, v.Err) | ||
| } | ||
| logger.Debugf("SendInstallProposal Endorser '%s' return ProposalResponse status:%v\n", v.Endorser, v.Status) | ||
| } | ||
|
|
||
| return nil | ||
|
|
||
| } | ||
|
|
||
| // SendInstantiateCC Sends instantiate CC proposal to one or more endorsing peers | ||
| func SendInstantiateCC(chain fabricClient.Chain, chainCodeID string, chainID string, args []string, chaincodePath string, chaincodeVersion string, targets []fabricClient.Peer, eventHub events.EventHub) error { | ||
|
|
||
| transactionProposalResponse, txID, err := chain.SendInstantiateProposal(chainCodeID, chainID, args, chaincodePath, chaincodeVersion, targets) | ||
| if err != nil { | ||
| return fmt.Errorf("SendInstantiateProposal return error: %v", err) | ||
| } | ||
|
|
||
| for _, v := range transactionProposalResponse { | ||
| if v.Err != nil { | ||
| return fmt.Errorf("SendInstantiateProposal Endorser %s return error: %v", v.Endorser, v.Err) | ||
| } | ||
| logger.Debug("SendInstantiateProposal Endorser '%s' return ProposalResponse status:%v\n", v.Endorser, v.Status) | ||
| } | ||
|
|
||
| // Register for commit event | ||
| done, fail := RegisterTxEvent(txID, eventHub) | ||
|
|
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| if _, err = CreateAndSendTransaction(chain, transactionProposalResponse); err != nil { | ||
| return fmt.Errorf("CreateTransaction return error: %v", err) | ||
| } | ||
|
|
||
| select { | ||
| case <-done: | ||
| case <-fail: | ||
| return fmt.Errorf("instantiateCC Error received from eventhub for txid(%s) error(%v)", txID, fail) | ||
| case <-time.After(time.Second * 30): | ||
| return fmt.Errorf("instantiateCC Didn't receive block event for txid(%s)", txID) | ||
| } | ||
| return nil | ||
|
|
||
| } | ||
|
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| // CreateAndJoinChannel creates the channel represented by this chain | ||
| // and makes the primary peer join it. It reads channel configuration from tx channelConfig file | ||
| func CreateAndJoinChannel(client fabricClient.Client, chain fabricClient.Chain, channelConfig string) error { | ||
|
|
||
| // Check if primary peer has joined this channel | ||
| var foundChannel bool | ||
| primaryPeer := chain.GetPrimaryPeer() | ||
| response, err := chain.QueryChannels(primaryPeer) | ||
| if err != nil { | ||
| return fmt.Errorf("Error querying channels for primary peer: %s", err) | ||
| } | ||
| for _, channel := range response.Channels { | ||
| if channel.ChannelId == chain.GetName() { | ||
| foundChannel = true | ||
| } | ||
| } | ||
|
|
||
| if foundChannel { | ||
| // There's no need to create a channel, return | ||
| return nil | ||
| } | ||
|
|
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| logger.Infof("***** Creating and Joining channel: %s *****\n", chain.GetName()) | ||
|
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| configTx, err := ioutil.ReadFile(channelConfig) | ||
| if err != nil { | ||
| return fmt.Errorf("Error reading config file: %v", err) | ||
| } | ||
|
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| request := fabricClient.CreateChannelRequest{ConfigData: configTx} | ||
| if err = chain.CreateChannel(&request); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| // Wait for orderer to process channel metadata | ||
| time.Sleep(time.Second * 2) | ||
| // Test join channel | ||
| creator, err := getCreatorID(client) | ||
| if err != nil { | ||
| return fmt.Errorf("Could not generate creator ID: %v", err) | ||
| } | ||
| nonce, err := util.GenerateRandomNonce() | ||
| if err != nil { | ||
| return fmt.Errorf("Could not compute nonce: %s", err) | ||
| } | ||
| txID, err := util.ComputeTxID(nonce, creator) | ||
| if err != nil { | ||
| return fmt.Errorf("Could not compute TxID: %s", err) | ||
| } | ||
|
|
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| req := &fabricClient.JoinChannelRequest{ | ||
| Targets: []fabricClient.Peer{chain.GetPrimaryPeer()}, TxID: txID, Nonce: nonce} | ||
| if err = chain.JoinChannel(req); err != nil { | ||
| return err | ||
| } | ||
|
|
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| logger.Infof("***** Created and Joined channel: %s *****\n", chain.GetName()) | ||
|
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| return nil | ||
| } | ||
|
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||
| // Utility to create random string of strlen length | ||
| func randomString(strlen int) string { | ||
| const chars = "abcdefghijklmnopqrstuvwxyz0123456789" | ||
| result := make([]byte, strlen) | ||
| for i := 0; i < strlen; i++ { | ||
| result[i] = chars[rand.Intn(len(chars))] | ||
| } | ||
| return string(result) | ||
| } | ||
|
|
||
| // ChangeGOPATHToDeploy changes go path to fixtures folder | ||
| func ChangeGOPATHToDeploy(deployPath string) { | ||
| os.Setenv("GOPATH", deployPath) | ||
| } | ||
|
|
||
| // ResetGOPATH resets go path to original | ||
| func ResetGOPATH() { | ||
| os.Setenv("GOPATH", origGoPath) | ||
| } | ||
|
|
||
| // GenerateRandomID generates random ID | ||
| func GenerateRandomID() string { | ||
| rand.Seed(time.Now().UnixNano()) | ||
| return randomString(10) | ||
| } |
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