HyperLeger Fabric SDK开发
1、sdk/main.go 文件
package main import ( "fmt" "github.com/hyperledger/fabric-sdk-go/pkg/client/channel" "github.com/hyperledger/fabric-sdk-go/pkg/common/logging" "github.com/hyperledger/fabric-sdk-go/pkg/core/config" "github.com/hyperledger/fabric-sdk-go/pkg/fabsdk" "os" ) var ( cc = "copyright" user = "Admin" //此处Admin，但实际中应使用User1 secret = "" channelName = "mychannel" lvl = logging.INFO orgName = "Org1MSP" ) func main() { c := config.FromFile("./config.yaml") sdk, err := fabsdk.New(c) if err != nil { fmt.Printf("Failed to create new SDK: %s\n", err) os.Exit(1) } defer sdk.Close() clientChannelContext := sdk.ChannelContext(channelName, fabsdk.WithUser(user), fabsdk.WithOrg(orgName)) if err != nil { fmt.Printf("Failed to create channel [%s] client: %#v", channelName, err) os.Exit(1) } client, err := channel.New(clientChannelContext) if err != nil { fmt.Printf("Failed to create channel [%s]:", channelName, err) } //queryCC(client, []byte("李四")) //json := `{"name":"zhangsi","age":18,"address":"北京市丰台区"}` name := "张三" //invokeCC(client, name, json) //deleteCC(client, []byte(name)) queryCC(client, []byte(name)) } func invokeCC(client *channel.Client, name string, value string) { args := [][]byte{[]byte(name), []byte(value)} _, err := client.Execute(channel.Request{ ChaincodeID: cc, Fcn: "set", Args: args, }) if err != nil { fmt.Printf("Failed to invoke: %+v\n", err) } } func deleteCC(client *channel.Client, name []byte) { var args = [][]byte{name} _, err := client.Execute(channel.Request{ ChaincodeID: cc, Fcn: "del", Args: args, }) if err != nil { fmt.Println("Failed to query: ", err) } } func queryCC(client *channel.Client, name []byte) string { var args = [][]byte{name} response, err := client.Query(channel.Request{ ChaincodeID: cc, Fcn: "get", Args: args, }) if err != nil { fmt.Println("Failed to query: ", err) } //ret := string(response.Payload) fmt.Println("Chaincode status: ", response.ChaincodeStatus) fmt.Println("Payload: ", response) return "" }
2、config.yaml 文件
#指定版本GO SDK version: 1.0.0 #客户端定义 client: # Which organization does this application instance belong to? The value must be the name of an org # defined under "organizations" organization: Org1MSP logging: level: info # Root of the MSP directories with keys and certs. cryptoconfig: # path: ${FABRIC_SDK_GO_PROJECT_PATH}/${CRYPTOCONFIG_FIXTURES_PATH} path: ./organizations # Some SDKs support pluggable KV stores, the properties under "credentialStore" # are implementation specific credentialStore: # [Optional]. Used by user store. Not needed if all credentials are embedded in configuration # and enrollments are performed elswhere. path: "./tmp/state-store" # [Optional]. Specific to the CryptoSuite implementation used by GO SDK. Software-based implementations # requiring a key store. PKCS#11 based implementations does not. #cryptoStore: # Specific to the underlying KeyValueStore that backs the crypto key store. #path: ./organizations/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp/ # [Optional] BCCSP config for the client. Used by GO SDK. BCCSP: security: enabled: true default: provider: "SW" hashAlgorithm: "SHA2" softVerify: true level: 256 tlsCerts: # [Optional]. Use system certificate pool when connecting to peers, orderers (for negotiating TLS) Default: false systemCertPool: true # [Optional]. Client key and cert for TLS handshake with peers and orderers client: key: # path: ${FABRIC_SDK_GO_PROJECT_PATH}/${CRYPTOCONFIG_FIXTURES_PATH}/peerOrganizations/tls.example.com/users/User1@tls.example.com/tls/client.key path: /Users/lishengqiang/website/go/fabric-go-api/organizations/peerOrganizations/org1.example.com/users/User1@org1.example.com/tls/client.key cert: # path: ${FABRIC_SDK_GO_PROJECT_PATH}/${CRYPTOCONFIG_FIXTURES_PATH}/peerOrganizations/tls.example.com/users/User1@tls.example.com/tls/client.crt path: /Users/lishengqiang/website/go/fabric-go-api/organizations/peerOrganizations/org1.example.com/users/User1@org1.example.com/tls/client.crt # # [Optional]. But most apps would have this section so that channel objects can be constructed # based on the content below. If an app is creating channels, then it likely will not need this # section. # channels: # Default channel is used if channel configuration is missing or if defined channel configuration is missing info # If channel doesn't define peers then peers from default channel will be used # If channel doesn't define orderes then orderes from default channel will be used # If channel doesn't define policies then policies from default channel will be used. # Also, if channel defines policies and some policy info is missing than that missing info will be filled from default channel. _default: # Optional. list of peers from participating orgs peers: peer0.org1.example.com: # [Optional]. will this peer be sent transaction proposals for endorsement? The peer must # have the chaincode installed. The app can also use this property to decide which peers # to send the chaincode install request. Default: true endorsingPeer: true # [Optional]. will this peer be sent query proposals? The peer must have the chaincode # installed. The app can also use this property to decide which peers to send the # chaincode install request. Default: true chaincodeQuery: true # [Optional]. will this peer be sent query proposals that do not require chaincodes, like # queryBlock(), queryTransaction(), etc. Default: true ledgerQuery: true # [Optional]. will this peer be the target of the SDK's listener registration? All peers can # produce events but the app typically only needs to connect to one to listen to events. # Default: true eventSource: true # [Optional]. The application can use these options to perform channel operations like retrieving channel # config etc. policies: #[Optional] options for retrieving channel configuration blocks queryChannelConfig: #[Optional] min number of success responses (from targets/peers) minResponses: 1 #[Optional] channel config will be retrieved for these number of random targets maxTargets: 1 #[Optional] retry options for query config block retryOpts: #[Optional] number of retry attempts attempts: 5 #[Optional] the back off interval for the first retry attempt initialBackoff: 500ms #[Optional] the maximum back off interval for any retry attempt maxBackoff: 5s #[Optional] he factor by which the initial back off period is exponentially incremented backoffFactor: 2.0 #[Optional] options for retrieving discovery info discovery: #[Optional] discovery info will be retrieved for these number of random targets maxTargets: 2 #[Optional] retry options for retrieving discovery info retryOpts: #[Optional] number of retry attempts attempts: 4 #[Optional] the back off interval for the first retry attempt initialBackoff: 500ms #[Optional] the maximum back off interval for any retry attempt maxBackoff: 5s #[Optional] he factor by which the initial back off period is exponentially incremented backoffFactor: 2.0 #[Optional] options for the event service eventService: resolverStrategy: PreferOrg balancer: Random blockHeightLagThreshold: 5 reconnectBlockHeightLagThreshold: 8 peerMonitorPeriod: 6s mychannel: peers: peer0.org1.example.com: endorsingPeer: true chaincodeQuery: true ledgerQuery: true eventSource: true organizations: # Org1: Org1MSP: mspid: Org1MSP cryptoPath: /Users/lishengqiang/website/go/fabric-go-api/organizations/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp peers: - peer0.org1.example.com orderers: #这部分内容没有起作用，原因未知 orderer.example.com: # [Optional] Default: Infer from hostname url: orderer.example.com:7050 # these are standard properties defined by the gRPC library # they will be passed in as-is to gRPC client constructor grpcOptions: ssl-target-name-override: orderer.example.com # These parameters should be set in coordination with the keepalive policy on the server, # as incompatible settings can result in closing of connection. # When duration of the 'keep-alive-time' is set to 0 or less the keep alive client parameters are disabled keep-alive-time: 0s keep-alive-timeout: 20s keep-alive-permit: false fail-fast: false # allow-insecure will be taken into consideration if address has no protocol defined, if true then grpc or else grpcs allow-insecure: false tlsCACerts: # Certificate location absolute path # path: ${FABRIC_SDK_GO_PROJECT_PATH}/${CRYPTOCONFIG_FIXTURES_PATH}/ordererOrganizations/example.com/tlsca/tlsca.example.com-cert.pem path: /Users/lishengqiang/website/go/fabric-go-api/organizations/ordererOrganizations/example.com/tlsca/tlsca.example.com-cert.pem # # List of peers to send various requests to, including endorsement, query # and event listener registration. # peers: peer0.org1.example.com: # this URL is used to send endorsement and query requests # [Optional] Default: Infer from hostname url: peer0.org1.example.com:7051 grpcOptions: ssl-target-name-override: peer0.org1.example.com # These parameters should be set in coordination with the keepalive policy on the server, # as incompatible settings can result in closing of connection. # When duration of the 'keep-alive-time' is set to 0 or less the keep alive client parameters are disabled keep-alive-time: 0s keep-alive-timeout: 20s keep-alive-permit: false fail-fast: false # allow-insecure will be taken into consideration if address has no protocol defined, if true then grpc or else grpcs allow-insecure: false tlsCACerts: # Certificate location absolute path # path: ${FABRIC_SDK_GO_PROJECT_PATH}/${CRYPTOCONFIG_FIXTURES_PATH}/peerOrganizations/org1.example.com/tlsca/tlsca.org1.example.com-cert.pem path: /Users/lishengqiang/website/go/fabric-go-api/organizations/peerOrganizations/org1.example.com/tlsca/tlsca.org1.example.com-cert.pem peer0.org2.example.com: url: peer0.org2.example.com:9051 grpcOptions: ssl-target-name-override: peer0.org2.example.com # These parameters should be set in coordination with the keepalive policy on the server, # as incompatible settings can result in closing of connection. # When duration of the 'keep-alive-time' is set to 0 or less the keep alive client parameters are disabled keep-alive-time: 0s keep-alive-timeout: 20s keep-alive-permit: false fail-fast: false # allow-insecure will be taken into consideration if address has no protocol defined, if true then grpc or else grpcs allow-insecure: false tlsCACerts: # path: ${FABRIC_SDK_GO_PROJECT_PATH}/${CRYPTOCONFIG_FIXTURES_PATH}/peerOrganizations/org2.example.com/tlsca/tlsca.org2.example.com-cert.pem path: /Users/lishengqiang/website/go/fabric-go-api/organizations/peerOrganizations/org2.example.com/tlsca/tlsca.org2.example.com-cert.pem # # Fabric-CA is a special kind of Certificate Authority provided by Hyperledger Fabric which allows # certificate management to be done via REST APIs. Application may choose to use a standard # Certificate Authority instead of Fabric-CA, in which case this section would not be specified. # # certificateAuthorities: # ca.org1.example.com: # # [Optional] Default: Infer from hostname # url: https://ca.org1.example.com:7054 # tlsCACerts: # # Comma-Separated list of paths # path: ${FABRIC_SDK_GO_PROJECT_PATH}/${CRYPTOCONFIG_FIXTURES_PATH}/peerOrganizations/org1.example.com/tlsca/tlsca.org1.example.com-cert.pem # # Client key and cert for SSL handshake with Fabric CA # client: # key: # path: ${FABRIC_SDK_GO_PROJECT_PATH}/${CRYPTOCONFIG_FIXTURES_PATH}/peerOrganizations/tls.example.com/users/User1@tls.example.com/tls/client.key # cert: # path: ${FABRIC_SDK_GO_PROJECT_PATH}/${CRYPTOCONFIG_FIXTURES_PATH}/peerOrganizations/tls.example.com/users/User1@tls.example.com/tls/client.crt # # Fabric-CA supports dynamic user enrollment via REST APIs. A "root" user, a.k.a registrar, is # # needed to enroll and invoke new users. # registrar: # enrollId: admin # enrollSecret: adminpw # # [Optional] The optional name of the CA. # caName: ca.org1.example.com # ca.org2.example.com: # url: https://ca.org2.example.com:8054 # tlsCACerts: # # Comma-Separated list of paths # path: ${FABRIC_SDK_GO_PROJECT_PATH}/${CRYPTOCONFIG_FIXTURES_PATH}/peerOrganizations/org2.example.com/tlsca/tlsca.org2.example.com-cert.pem # # Client key and cert for SSL handshake with Fabric CA # client: # key: # path: ${FABRIC_SDK_GO_PROJECT_PATH}/${CRYPTOCONFIG_FIXTURES_PATH}/peerOrganizations/tls.example.com/users/User1@tls.example.com/tls/client.key # cert: # path: ${FABRIC_SDK_GO_PROJECT_PATH}/${CRYPTOCONFIG_FIXTURES_PATH}/peerOrganizations/tls.example.com/users/User1@tls.example.com/tls/client.crt # # Fabric-CA supports dynamic user enrollment via REST APIs. A "root" user, a.k.a registrar, is # # needed to enroll and invoke new users. # registrar: # enrollId: admin # enrollSecret: adminpw # # [Optional] The optional name of the CA. # caName: ca.org2.example.com # EntityMatchers enable substitution of network hostnames with static configurations # so that properties can be mapped. Regex can be used for this purpose # UrlSubstitutionExp can be empty which means the same network hostname will be used # UrlSubstitutionExp can be given same as mapped peer url, so that mapped peer url can be used # UrlSubstitutionExp can have golang regex matchers like ${1}.local.example.${2}:${3} for pattern # like peer0.org1.example.com:1234 which converts peer0.org1.example.com to peer0.org1.local.example.com:1234 # sslTargetOverrideUrlSubstitutionExp follow in the same lines as # SubstitutionExp for the fields gprcOptions.ssl-target-name-override respectively # In any case mappedHost's config will be used, so mapped host cannot be empty, if entityMatchers are used #entityMatchers: entityMatchers: peer: - pattern: (\w+).org1.example.com:(\d+) urlSubstitutionExp: ${1}.org1.example.com:${2} sslTargetOverrideUrlSubstitutionExp: ${1}.org1.example.com mappedHost: peer0.org1.example.com - pattern: (\w+).org2.example.com:(\d+) urlSubstitutionExp: ${1}.org2.example.com:${2} sslTargetOverrideUrlSubstitutionExp: ${1}.org2.example.com mappedHost: peer0.org2.example.com orderer: - pattern: (\w+) #理论上该写(\w+).example.(\w+)，但总是访问127.0.0.1:7050,暂时未找到原因，先模糊匹配 urlSubstitutionExp: orderer.example.com:7050 sslTargetOverrideUrlSubstitutionExp: orderer.example.com mappedHost: orderer.example.com # # - pattern: (\w+).example2.(\w+) # urlSubstitutionExp: localhost:7050 # sslTargetOverrideUrlSubstitutionExp: localhost # mappedHost: orderer.example.com # # - pattern: (\w+).example3.(\w+) # urlSubstitutionExp: # sslTargetOverrideUrlSubstitutionExp: # mappedHost: orderer.example.com # # - pattern: (\w+).example4.(\w+):(\d+) # urlSubstitutionExp: ${1}.example.${2}:${3} # sslTargetOverrideUrlSubstitutionExp: ${1}.example.${2} # mappedHost: orderer.example.com # # certificateAuthority: # - pattern: (\w+).org1.example.(\w+) # urlSubstitutionExp: # mappedHost: ca.org1.example.com # # - pattern: (\w+).org2.example.(\w+) # urlSubstitutionExp: # mappedHost: ca.org2.example.com
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