fabric 2.5 使用jar安装Java合约（解决Fabric安装Java链码速度慢的问题）

Java工程使用Maven或者gradle构建，在fabric 使用docker 构建Java智能合约，构建脚本：

#!/usr/bin/env bash
set -ex

INPUT_DIR=/chaincode/input
OUTPUT_DIR=/chaincode/output
TMP_DIR=$(mktemp -d)

NUM_JARS=$(find ${INPUT_DIR} -name "*.jar" | wc -l)

buildGradle() {
    echo "Copying from $1 to ${TMP_DIR}"
    cd $1
    tar cf - . | (cd ${TMP_DIR}; tar xf -)
    cd ${TMP_DIR}
    echo "Gradle build"
    if [ -f ./gradlew ]; then
      chmod +x ./gradlew
      ./gradlew build shadowJar -x test
    else
      /root/chaincode-java/gradlew build shadowJar -x test
    fi
    retval=$?
    if [ $retval -ne 0 ]; then
      exit $retval
    fi
    cp build/libs/chaincode.jar $2
    retval=$?
    if [ $retval -ne 0 ]; then
      exit $retval
    fi
    touch $2/.uberjar
    cd "$SAVED" >/dev/null
}

buildMaven() {
    echo "Copying from $1 to ${TMP_DIR}"
    cd $1
    tar cf - . | (cd ${TMP_DIR}; tar xf -)
    cd ${TMP_DIR}
    echo "Maven build"

    if [ -f ./mvnw ]; then
      chmod +x ./mvnw      
    else
      cp -r /root/chaincode-java/.mvn .
      cp /root/chaincode-java/mvnw .
    fi
    ./mvnw compile package -DskipTests -Dmaven.test.skip=true
    
    retval=$?
    if [ $retval -ne 0 ]; then
      exit $retval
    fi
    cp target/chaincode.jar $2
    retval=$?
    if [ $retval -ne 0 ]; then
      exit $retval
    fi
    touch $2/.uberjar
    cd "$SAVED" >/dev/null
}

for DIR in ${INPUT_DIR} ${INPUT_DIR}/src; do
    if [ -f ${DIR}/build.gradle -o -f ${DIR}/build.gradle.kts ]; then
        buildGradle ${DIR} ${OUTPUT_DIR}
        exit 0
    elif [ -f ${DIR}/pom.xml ]; then
        buildMaven ${DIR} ${OUTPUT_DIR}
        exit 0
    fi
done

if [ ${NUM_JARS} -eq 0 ]; then
    >&2 echo "Not build.gradle nor pom.xml found in chaincode source, don't know how to build chaincode"
    >&2 echo "Project folder content:"
    >&2 find ${INPUT_DIR} -name "*" -exec ls -ld '{}' \;
    exit 255
else
    cd ${INPUT_DIR} && tar cf - $(find . -name "*.jar") | (cd ${OUTPUT_DIR} && tar xvf -)
fi

从build.sh看出支持gradle、maven、jar三种方式。

maven构建慢的原因

$ docker ps -a
CONTAINER ID   IMAGE                               COMMAND                  CREATED        STATUS        PORTS                                                                                                NAMES
79333401a4c8   hyperledger/fabric-javaenv:2.5      "/__cacert_entrypoin…"   14 hours ago   Up 14 hours                                                                                                        unruffled_curran

#进入docker实例
$ docker exec -it 79333401a4c8 /bin/bash
root@79333401a4c8:~/chaincode-java# ll
total 80
drwxr-xr-x 8 root root  4096 May 23 18:11 ./
drwx------ 1 root root  4096 Aug 21 02:04 ../
-rwxr-xr-x 1 root root  1920 May 23 18:03 build.sh*
drwxr-xr-x 4 root root  4096 May 23 18:05 chaincode/
drwxr-xr-x 5 root root  4096 May 23 18:10 .gradle/
drwxr-xr-x 3 root root  4096 May 23 18:10 gradle/
-rwxr-xr-x 1 root root  8692 May 23 18:10 gradlew*
-rw-r--r-- 1 root root  2918 May 23 18:10 gradlew.bat
drwxr-xr-x 2 root root  4096 May 23 18:03 lib/
drwxr-xr-x 3 root root  4096 May 23 18:11 .mvn/
-rwxrwxr-x 1 root root 10069 May 23 18:11 mvnw*
-rw-rw-r-- 1 root root  6607 May 23 18:11 mvnw.cmd
-rw-r--r-- 1 root root     0 May 23 18:10 settings.gradle
drwxr-xr-x 4 root root  4096 May 23 18:05 shim-src/
-rwxr-xr-x 1 root root   740 May 23 18:03 start*

.mvnw 打包使用.mvn目录，.mvn包含maven-wrapper.properties文件。

# ll .mvn/wrapper/
total 72
drwxr-xr-x 2 root root  4096 May 23 18:11 ./
drwxr-xr-x 3 root root  4096 May 23 18:11 ../
-rw-rw-r-- 1 root root  4941 May 23 18:11 MavenWrapperDownloader.java
-rw-rw-r-- 1 root root 50710 May 23 18:11 maven-wrapper.jar
-rw-rw-r-- 1 root root   218 May 23 18:11 maven-wrapper.properties

maven-wrapper.properties：

cat .mvn/wrapper/maven-wrapper.properties 
distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.3/apache-maven-3.6.3-bin.zip
wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar

maven是通过Apache网站下载，总所周知，国内下载apache数据比较慢的，maven构建工程慢（或者超时）的原因只是在此。

使用Jar安装合约

工程目录结构如下：

$ ll
total 56
drwxrwxr-x 6 along along  4096 Aug 20 20:14 ./
drwxrwxr-x 5 along along  4096 Aug 15 16:30 ../
drwxrwxr-x 8 along along  4096 Aug 20 20:03 .git/
-rw-rw-r-- 1 along along   395 Aug 15 16:30 .gitignore
drwxrwxr-x 3 along along  4096 Aug 20 19:46 .mvn/
-rwxrwxr-x 1 along along 10069 Aug 20 19:46 mvnw*
-rwxrwxr-x 1 along along  6607 Aug 20 19:46 mvnw.cmd*
-rw-rw-r-- 1 along along  5071 Aug 15 16:30 pom.xml
drwxrwxr-x 3 along along  4096 Aug 15 16:30 src/
drwxrwxr-x 6 along along  4096 Aug 20 20:18 target/

1. maven 打包

$ ./mvnw compile package -DskipTests -Dmaven.test.skip=true

打包完成后：

$ tree target/
target/
├── chaincode.jar
├── classes
│   └── tech
│       └── pplus
│           └── fabric
│               └── chaincode
│                   ├── BaseChaincode.class
│                   ├── ChaincodeConstants.class
│                   ├── supplies
│                   │   └── SuppliesChaincode.class
│                   └── user
│                       ├── module
│                       │   ├── User.class
│                       │   ├── UserRoleEnum.class
│                       │   └── UserStatusEnum.class
│                       └── UserChaincode.class
├── generated-sources
│   └── annotations
├── maven-archiver
│   └── pom.properties
├── maven-status
│   └── maven-compiler-plugin
│       └── compile
│           └── default-compile
│               ├── createdFiles.lst
│               └── inputFiles.lst
├── original-chaincode.jar
└── warehouse_supplies-1.0-SNAPSHOT.jar

chaincode.jar是我们需要的合约jar。

2. 构建打包目录

# 新建src目录
$ mkdir src

#拷贝chaincode.jar 到src目录
cp fabric_warehouse_supplies/target/chaincode.jar src/

$ tree src/
src/
└── chaincode.jar

3. peer package（打包链码）

$ peer lifecycle chaincode package warehouse_supplies_v1.tar.gz --path /home/along/go/src/github.com/Hyperledger/fabric-java/src/ --lang java --label warehouse_supplies_v1

/home/along/go/src/github.com/Hyperledger/fabric-java/src/ 是存放chaincode.jar的目录。

查看打包的信息

# 解压
$ mkdir chaincode && tar -txvf warehouse_supplies_v1.tar.gz -C chaincode

$ ll chaincode/
total 29748
drwxrwxr-x  2 along along     4096 Aug 21 10:06 ./
drwxrwxr-x 10 along along     4096 Aug 21 10:05 ../
-rw-r--r--  1 along along 30449390 Jan  1  1970 code.tar.gz
-rw-r--r--  1 along along      115 Jan  1  1970 metadata.json

$ tar -zxvf code.tar.gz 

# 解压后的src
$ tree 
.
├── code.tar.gz
├── metadata.json
└── src
    └── chaincode.jar

4. peer install（安装链码）

安装链码

# 安装链码
$ peer lifecycle chaincode install warehouse_supplies_v1.tar.gz
2024-08-21 10:07:33.466 CST 0001 INFO [cli.lifecycle.chaincode] submitInstallProposal -> Installed remotely: response:<status:200 payload:"\nVwarehouse_supplies_v1:7773346e816b21e84996a499565eacb31a862b316d5fc38b853667d6bc36fe77\022\025warehouse_supplies_v1" > 
2024-08-21 10:07:33.468 CST 0002 INFO [cli.lifecycle.chaincode] submitInstallProposal -> Chaincode code package identifier: warehouse_supplies_v1:7773346e816b21e84996a499565eacb31a862b316d5fc38b853667d6bc36fe77

#查看已安装的链码
$ peer lifecycle chaincode queryinstalled
Installed chaincodes on peer:
Package ID: warehouse_supplies_v1:7773346e816b21e84996a499565eacb31a862b316d5fc38b853667d6bc36fe77, Label: warehouse_supplies_v1

此时链码已经安装成功。

看看执行install指令时monitordocker.sh输出的信息：

peer0.org1.example.com|2024-08-21 02:07:26.120 UTC 009b INFO [chaincode.externalbuilder.ccaas_builder] waitForExit -> ::Error: chaincode type not supported: java command=detect
         awesome_kalam|+ INPUT_DIR=/chaincode/input
         awesome_kalam|+ OUTPUT_DIR=/chaincode/output
         awesome_kalam|++ mktemp -d
         awesome_kalam|+ TMP_DIR=/tmp/tmp.VaQTZDBvRA
         awesome_kalam|++ wc -l
         awesome_kalam|++ find /chaincode/input -name '*.jar'
         awesome_kalam|+ NUM_JARS=1
         awesome_kalam|+ for DIR in ${INPUT_DIR} ${INPUT_DIR}/src
         awesome_kalam|+ '[' -f /chaincode/input/build.gradle -o -f /chaincode/input/build.gradle.kts ']'
         awesome_kalam|+ '[' -f /chaincode/input/pom.xml ']'
         awesome_kalam|+ for DIR in ${INPUT_DIR} ${INPUT_DIR}/src
         awesome_kalam|+ '[' -f /chaincode/input/src/build.gradle -o -f /chaincode/input/src/build.gradle.kts ']'
         awesome_kalam|+ '[' -f /chaincode/input/src/pom.xml ']'
         awesome_kalam|+ '[' 1 -eq 0 ']'
         awesome_kalam|+ cd /chaincode/input
         awesome_kalam|+ cd /chaincode/output
         awesome_kalam|+ tar xvf -
         awesome_kalam|++ find . -name '*.jar'
         awesome_kalam|+ tar cf - ./src/chaincode.jar
         awesome_kalam|./src/chaincode.jar
peer0.org1.example.com|2024-08-21 02:07:33.465 UTC 009c INFO [lifecycle] InstallChaincode -> Successfully installed chaincode with package ID 'warehouse_supplies_v1:7773346e816b21e84996a499565eacb31a862b316d5fc38b853667d6bc36fe77'

5. peer approveformyorg（批准链码）

批准链码：

$ peer lifecycle chaincode approveformyorg \
-o localhost:7050 \
--ordererTLSHostnameOverride orderer.example.com \
--channelID ch1 \
--name warehouse_supplies \
--version 1.0 \
--package-id warehouse_supplies_v1:7773346e816b21e84996a499565eacb31a862b316d5fc38b853667d6bc36fe77 \
--sequence 1 \
--tls \
--cafile "${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem"
2024-08-21 11:01:33.251 CST 0001 INFO [chaincodeCmd] ClientWait -> txid [be566cd87115f9486f2f2b4926c72874b50478a85ee2c34c29340acef4c68488] committed with status (VALID) at localhost:7051

6.peer commit（提交链码）

提交链码：

$ peer lifecycle chaincode commit \
-o localhost:7050 \
--ordererTLSHostnameOverride orderer.example.com \
--channelID ch1 \
--name warehouse_supplies \
--version 1.0 \
--sequence 1 \
--tls \
--cafile "${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem" \
--peerAddresses localhost:7051 --tlsRootCertFiles "${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt" \
--peerAddresses localhost:9051 --tlsRootCertFiles "${PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt"
2024-08-21 11:05:56.086 CST 0001 INFO [chaincodeCmd] ClientWait -> txid [b7d897812e83ae4cd82e5e90782adcf63f7d419206046a0d6b8796a711a1823d] committed with status (VALID) at localhost:7051
2024-08-21 11:05:56.242 CST 0002 INFO [chaincodeCmd] ClientWait -> txid [b7d897812e83ae4cd82e5e90782adcf63f7d419206046a0d6b8796a711a1823d] committed with status (VALID) at localhost:9051

7. 运行链码

初始化链码：

# 初始化链码
$ peer chaincode invoke \
-o localhost:7050 \
--ordererTLSHostnameOverride orderer.example.com \
--tls \
--cafile "${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem" \
-C ch1 \
-n warehouse_supplies \
--peerAddresses localhost:7051 \
--tlsRootCertFiles "${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt" \
--peerAddresses localhost:9051 \
--tlsRootCertFiles "${PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt" \
-c '{"function":"init","Args":[]}'

查询链码方法：

$ peer chaincode query -C ch1 -n warehouse_supplies -c '{"function":"getAllUsers","Args":[""]}'
[{"name":"超级管理员","id":"x509::CN=org1admin, OU=admin, O=Hyperledger, ST=North Carolina, C=US::CN=ca.org1.example.com, O=org1.example.com, L=Durham, ST=North Carolina, C=US","roles":[1],"status":1}]