Add sdk java sample
Baohua Yang
parent
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commit
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# Do patch on the grpc-java
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#rm ~/.m2/repository/io/grpc/grpc-netty-shaded/1.38.0/grpc-netty-shaded-1.38.0.jar
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#mvn install:install-file -Dfile=grpc-netty-shaded-build/grpc-netty-shaded-1.38.0.jar -DgroupId=io.grpc -DartifactId=grpc-netty-shaded -Dversion=1.38.0 -Dpackaging=jar
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# Compile if the source code is changed
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mvn compile
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# Run the method
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mvn exec:java \
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-Dexec.cleanupDaemonThreads=false \
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-Dexec.mainClass="sample.Sample"
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{
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"name": "basic-network",
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"version": "1.0.0",
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"client": {
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"organization": "Org1",
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"connection": {
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"timeout": {
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"peer": {
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"endorser": "300"
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},
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"orderer": "300"
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}
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}
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},
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"channels": {
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"mychannel": {
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"orderers": [
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"orderer0.example.com"
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],
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"peers": {
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"peer0.org1.example.com": {
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"endorsingPeer": true,
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"chaincodeQuery": true,
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"ledgerQuery": true,
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"eventSource": true
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}
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}
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}
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},
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"organizations": {
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"Org1": {
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"mspid": "Org1MSP",
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"peers": [
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"peer0.org1.example.com"
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],
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"certificateAuthorities": [
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"ca-org1"
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],
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"adminPrivateKeyPEM": {
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"path": "/opt/crypto-config/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp/keystore/priv_sk"
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},
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"signedCertPEM": {
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"path": "/opt/crypto-config/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp/signcerts/Admin@org1.example.com-cert.pem"
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}
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}
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},
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"orderers": {
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"orderer0.example.com": {
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"url": "grpcs://orderer0.example.com:7050",
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"mspid": "OrdererMSP",
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"grpcOptions": {
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"ssl-target-name-override": "orderer0.example.com",
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"hostnameOverride": "orderer0.example.com"
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},
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"tlsCACerts": {
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"path": "/opt/crypto-config/ordererOrganizations/example.com/orderers/orderer0.example.com/tls/ca.crt"
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},
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"adminPrivateKeyPEM": {
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"path": "/opt/crypto-config/ordererOrganizations/example.com/users/Admin@example.com/msp/keystore/priv_sk"
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},
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"signedCertPEM": {
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"path": "/opt/crypto-config/ordererOrganizations/example.com/users/Admin@example.com/msp/signcerts/Admin@example.com-cert.pem"
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}
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}
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},
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"peers": {
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"peer0.org1.example.com": {
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"url": "grpcs://peer0.org1.example.com:7051",
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"grpcOptions": {
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"ssl-target-name-override": "peer0.org1.example.com",
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"hostnameOverride": "peer0.org1.example.com",
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"request-timeout": 120001
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},
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"tlsCACerts": {
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"path": "/opt/crypto-config/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt"
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}
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},
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"peer0.org2.example.com": {
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"url": "grpcs://peer0.org2.example.com:7051",
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"grpcOptions": {
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"ssl-target-name-override": "peer0.org2.example.com",
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"hostnameOverride": "peer0.org2.example.com",
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"request-timeout": 120001
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},
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"tlsCACerts": {
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"path": "/opt/crypto-config/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt"
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}
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}
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},
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"certificateAuthorities": {
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"ca-org1": {
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"url": "https://localhost:7054",
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"grpcOptions": {
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"verify": true
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},
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"tlsCACerts": {
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"path": "/opt/crypto-config/peerOrganizations/org1.example.com/ca/ca.org1.example.com-cert.pem"
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},
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"registrar": [
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{
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"enrollId": "admin",
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"enrollSecret": "adminpw"
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}
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]
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},
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"ca-org2": {
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"url": "https://localhost:8054",
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"grpcOptions": {
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"verify": true
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},
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"tlsCACerts": {
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"path": "/opt/crypto-config/peerOrganizations/org2.example.com/ca/ca.org2.example.com-cert.pem"
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},
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"registrar": [
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{
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"enrollId": "admin",
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"enrollSecret": "adminpw"
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}
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]
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}
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}
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}
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>sample</groupId>
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<artifactId>sample</artifactId>
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<version>1.0.0</version>
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<build>
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<plugins>
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<plugin>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.8.0</version>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-shade-plugin</artifactId>
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<version>3.2.0</version>
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<executions>
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<!-- Attach the shade goal into the package phase -->
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<execution>
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<phase>package</phase>
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<goals>
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<goal>shade</goal>
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</goals>
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</execution>
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</executions>
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<configuration>
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<createDependencyReducedPom>false</createDependencyReducedPom>
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<filters>
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<filter>
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<artifact>*:*</artifact>
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<excludes>
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<exclude>META-INF/*.SF</exclude>
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<exclude>META-INF/*.DSA</exclude>
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<exclude>META-INF/*.RSA</exclude>
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</excludes>
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</filter>
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</filters>
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</configuration>
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</plugin>
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</plugins>
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</build>
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<repositories>
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<repository>
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<id>oss-sonatype</id>
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<name>OSS Sonatype</name>
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<url>https://oss.sonatype.org/content/repositories/snapshots</url>
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</repository>
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</repositories>
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<dependencies>
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<dependency>
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<groupId>org.hyperledger.fabric</groupId>
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<artifactId>fabric-gateway-java</artifactId>
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<version>2.2.0</version>
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</dependency>
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<dependency>
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<groupId>org.junit.platform</groupId>
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<artifactId>junit-platform-launcher</artifactId>
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<version>1.4.2</version>
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</dependency>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter-engine</artifactId>
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<version>5.4.1</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.junit.vintage</groupId>
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<artifactId>junit-vintage-engine</artifactId>
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<version>5.4.2</version>
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</dependency>
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<dependency>
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<groupId>org.assertj</groupId>
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<artifactId>assertj-core</artifactId>
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<version>3.12.2</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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</project>
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@ -0,0 +1,57 @@
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package sample;
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import java.io.IOException;
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import java.nio.charset.StandardCharsets;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.concurrent.TimeoutException;
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import org.hyperledger.fabric.gateway.Contract;
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import org.hyperledger.fabric.gateway.ContractException;
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import org.hyperledger.fabric.gateway.Gateway;
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import org.hyperledger.fabric.gateway.Network;
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import org.hyperledger.fabric.gateway.Wallet;
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import org.hyperledger.fabric.gateway.Wallets;
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public class Sample {
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public static void main(String[] args) throws IOException {
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String connectProfilePath="connection.json";
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String channelName="businesschannel";
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String walletPath="/opt/test/wallet";
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String chaincodeName="exp02";
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// Load an existing wallet holding identities used to access the network.
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Path walletDirectory = Paths.get(walletPath);
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Wallet wallet = Wallets.newFileSystemWallet(walletDirectory);
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// Path to a common connection profile describing the network.
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Path networkConfigFile = Paths.get(connectProfilePath);
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// Configure the gateway connection used to access the network.
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Gateway.Builder builder = Gateway.createBuilder()
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.identity(wallet, "admin")
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.networkConfig(networkConfigFile);
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// Create a gateway connection
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try (Gateway gateway = builder.connect()) {
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// Obtain a smart contract deployed on the network.
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Network network = gateway.getNetwork(channelName);
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Contract contract = network.getContract(chaincodeName);
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// Submit transactions that store state to the ledger.
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byte[] createCarResult = contract.createTransaction("invoke")
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.submit( "a", "b", "10");
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System.out.println(new String(createCarResult, StandardCharsets.UTF_8));
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// Evaluate transactions that query state from the ledger.
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byte[] queryAllCarsResult = contract.evaluateTransaction("query", "a");
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System.out.println(new String(queryAllCarsResult, StandardCharsets.UTF_8));
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} catch (ContractException | TimeoutException | InterruptedException e) {
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e.printStackTrace();
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}
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System.exit(0);
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}
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}
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