diff --git a/asset-transfer-basic/application-gateway-java/build.gradle b/asset-transfer-basic/application-gateway-java/build.gradle new file mode 100644 index 00000000..83e2e92a --- /dev/null +++ b/asset-transfer-basic/application-gateway-java/build.gradle @@ -0,0 +1,43 @@ +/* + * This file was generated by the Gradle 'init' task. + * + * This generated file contains a sample Java project to get you started. + * For more details take a look at the Java Quickstart chapter in the Gradle + * User Manual available at https://docs.gradle.org/6.5/userguide/tutorial_java_projects.html + */ +plugins { + // Apply the java plugin to add support for Java + id 'java' + // Apply the application plugin to add support for building a CLI application. + id 'application' + +} +ext { + javaMainClass = "application.java.App" +} + +repositories { + mavenCentral() +} + +dependencies { + // This dependency is used by the application. + implementation 'org.hyperledger.fabric:fabric-gateway:1.0.0' + implementation 'io.grpc:grpc-netty-shaded:1.42.0' + implementation 'com.google.code.gson:gson:2.8.9' + +} + +application { + // Define the main class for the application. + mainClassName = 'application.java.App' +} + +// task for running the app after building dependencies +task runApp(type: Exec) { + dependsOn build + group = "Execution" + description = "Run the main class with ExecTask" + commandLine "java", "-classpath", sourceSets.main.runtimeClasspath.getAsPath(), javaMainClass +} + diff --git a/asset-transfer-basic/application-gateway-java/gradle/wrapper/gradle-wrapper.jar b/asset-transfer-basic/application-gateway-java/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 00000000..62d4c053 Binary files /dev/null and b/asset-transfer-basic/application-gateway-java/gradle/wrapper/gradle-wrapper.jar differ diff --git a/asset-transfer-basic/application-gateway-java/gradle/wrapper/gradle-wrapper.properties b/asset-transfer-basic/application-gateway-java/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 00000000..622ab64a --- /dev/null +++ b/asset-transfer-basic/application-gateway-java/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,5 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/asset-transfer-basic/application-gateway-java/gradlew b/asset-transfer-basic/application-gateway-java/gradlew new file mode 100755 index 00000000..fbd7c515 --- /dev/null +++ b/asset-transfer-basic/application-gateway-java/gradlew @@ -0,0 +1,185 @@ +#!/usr/bin/env sh + +# +# Copyright 2015 the original author or authors. +# +# 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 +# +# https://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. +# + +############################################################################## +## +## Gradle start up script for UN*X +## +############################################################################## + +# Attempt to set APP_HOME +# Resolve links: $0 may be a link +PRG="$0" +# Need this for relative symlinks. +while [ -h "$PRG" ] ; do + ls=`ls -ld "$PRG"` + link=`expr "$ls" : '.*-> \(.*\)$'` + if expr "$link" : '/.*' > /dev/null; then + PRG="$link" + else + PRG=`dirname "$PRG"`"/$link" + fi +done +SAVED="`pwd`" +cd "`dirname \"$PRG\"`/" >/dev/null +APP_HOME="`pwd -P`" +cd "$SAVED" >/dev/null + +APP_NAME="Gradle" +APP_BASE_NAME=`basename "$0"` + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD="maximum" + +warn () { + echo "$*" +} + +die () { + echo + echo "$*" + echo + exit 1 +} + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "`uname`" in + CYGWIN* ) + cygwin=true + ;; + Darwin* ) + darwin=true + ;; + MINGW* ) + msys=true + ;; + NONSTOP* ) + nonstop=true + ;; +esac + +CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar + + +# Determine the Java command to use to start the JVM. +if [ -n "$JAVA_HOME" ] ; then + if [ -x "$JAVA_HOME/jre/sh/java" ] ; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD="$JAVA_HOME/jre/sh/java" + else + JAVACMD="$JAVA_HOME/bin/java" + fi + if [ ! -x "$JAVACMD" ] ; then + die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD="java" + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then + MAX_FD_LIMIT=`ulimit -H -n` + if [ $? -eq 0 ] ; then + if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then + MAX_FD="$MAX_FD_LIMIT" + fi + ulimit -n $MAX_FD + if [ $? -ne 0 ] ; then + warn "Could not set maximum file descriptor limit: $MAX_FD" + fi + else + warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" + fi +fi + +# For Darwin, add options to specify how the application appears in the dock +if $darwin; then + GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" +fi + +# For Cygwin or MSYS, switch paths to Windows format before running java +if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then + APP_HOME=`cygpath --path --mixed "$APP_HOME"` + CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` + + JAVACMD=`cygpath --unix "$JAVACMD"` + + # We build the pattern for arguments to be converted via cygpath + ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` + SEP="" + for dir in $ROOTDIRSRAW ; do + ROOTDIRS="$ROOTDIRS$SEP$dir" + SEP="|" + done + OURCYGPATTERN="(^($ROOTDIRS))" + # Add a user-defined pattern to the cygpath arguments + if [ "$GRADLE_CYGPATTERN" != "" ] ; then + OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" + fi + # Now convert the arguments - kludge to limit ourselves to /bin/sh + i=0 + for arg in "$@" ; do + CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` + CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option + + if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition + eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` + else + eval `echo args$i`="\"$arg\"" + fi + i=`expr $i + 1` + done + case $i in + 0) set -- ;; + 1) set -- "$args0" ;; + 2) set -- "$args0" "$args1" ;; + 3) set -- "$args0" "$args1" "$args2" ;; + 4) set -- "$args0" "$args1" "$args2" "$args3" ;; + 5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; + 6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; + 7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; + 8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; + 9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; + esac +fi + +# Escape application args +save () { + for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done + echo " " +} +APP_ARGS=`save "$@"` + +# Collect all arguments for the java command, following the shell quoting and substitution rules +eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" + +exec "$JAVACMD" "$@" diff --git a/asset-transfer-basic/application-gateway-java/gradlew.bat b/asset-transfer-basic/application-gateway-java/gradlew.bat new file mode 100644 index 00000000..a9f778a7 --- /dev/null +++ b/asset-transfer-basic/application-gateway-java/gradlew.bat @@ -0,0 +1,104 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%" == "" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%" == "" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if "%ERRORLEVEL%" == "0" goto init + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto init + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:init +@rem Get command-line arguments, handling Windows variants + +if not "%OS%" == "Windows_NT" goto win9xME_args + +:win9xME_args +@rem Slurp the command line arguments. +set CMD_LINE_ARGS= +set _SKIP=2 + +:win9xME_args_slurp +if "x%~1" == "x" goto execute + +set CMD_LINE_ARGS=%* + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% + +:end +@rem End local scope for the variables with windows NT shell +if "%ERRORLEVEL%"=="0" goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/asset-transfer-basic/application-gateway-java/settings.gradle b/asset-transfer-basic/application-gateway-java/settings.gradle new file mode 100644 index 00000000..5423bc7d --- /dev/null +++ b/asset-transfer-basic/application-gateway-java/settings.gradle @@ -0,0 +1,10 @@ +/* + * This file was generated by the Gradle 'init' task. + * + * The settings file is used to specify which projects to include in your build. + * + * Detailed information about configuring a multi-project build in Gradle can be found + * in the user manual at https://docs.gradle.org/6.5/userguide/multi_project_builds.html + */ + +rootProject.name = 'application-java' diff --git a/asset-transfer-basic/application-gateway-java/src/main/java/application/java/App.java b/asset-transfer-basic/application-gateway-java/src/main/java/application/java/App.java new file mode 100644 index 00000000..7ad3d19c --- /dev/null +++ b/asset-transfer-basic/application-gateway-java/src/main/java/application/java/App.java @@ -0,0 +1,286 @@ + +/* + * Copyright IBM Corp. All Rights Reserved. + * + * SPDX-License-Identifier: Apache-2.0 + */ + +// Running TestApp: +// gradle runApp + +package application.java; + +import java.io.File; +import java.io.IOException; +import java.io.Reader; +import java.nio.charset.StandardCharsets; +import java.nio.file.Files; +import java.nio.file.Path; +import java.nio.file.Paths; +import java.security.InvalidKeyException; +import java.security.PrivateKey; +import java.security.cert.CertificateException; +import java.security.cert.X509Certificate; +import java.time.Instant; +import java.util.concurrent.TimeUnit; + +import org.hyperledger.fabric.client.CallOption; +import org.hyperledger.fabric.client.CommitException; +import org.hyperledger.fabric.client.CommitStatusException; +import org.hyperledger.fabric.client.Contract; +import org.hyperledger.fabric.client.EndorseException; +import org.hyperledger.fabric.client.Gateway; +import org.hyperledger.fabric.client.GatewayException; +import org.hyperledger.fabric.client.Network; +import org.hyperledger.fabric.client.SubmitException; +import org.hyperledger.fabric.client.SubmittedTransaction; +import org.hyperledger.fabric.client.Status; +import org.hyperledger.fabric.client.identity.Identities; +import org.hyperledger.fabric.client.identity.Identity; +import org.hyperledger.fabric.client.identity.Signer; +import org.hyperledger.fabric.client.identity.Signers; +import org.hyperledger.fabric.client.identity.X509Identity; +import org.hyperledger.fabric.protos.gateway.ErrorDetail; + +import com.google.gson.Gson; +import com.google.gson.GsonBuilder; +import com.google.gson.JsonElement; +import com.google.gson.JsonParser; +import io.grpc.ManagedChannel; + +import io.grpc.netty.shaded.io.grpc.netty.GrpcSslContexts; +import io.grpc.netty.shaded.io.grpc.netty.NettyChannelBuilder; + +public class App { + + private static final String mspID = "Org1MSP"; + private static final String channelName = "mychannel"; + private static final String chaincodeName = "basic"; + + public static String assetId = "asset" + Instant.now().toEpochMilli(); + + // Path to crypto materials. + private static final Path cryptoPath = Paths.get("..", "..", "test-network", "organizations", "peerOrganizations", + "org1.example.com"); + // Path to user certificate. + private static final Path certPath = cryptoPath + .resolve(Paths.get("users", "User1@org1.example.com", "msp", "signcerts", "cert.pem")); + // Path to user private key directory. + private static final Path keyPath = cryptoPath + .resolve(Paths.get("users", "User1@org1.example.com", "msp", "keystore")); + // Path to peer tls certificate. + private static final Path tlsCertPath = cryptoPath + .resolve(Paths.get("peers", "peer0.org1.example.com", "tls", "ca.crt")); + + // Gateway peer end point. + public static String peerEndpoint = "localhost:7051"; + public static String overrideAuth = "peer0.org1.example.com"; + + public static void main(String[] args) + throws Exception { + + // The gRPC client connection should be shared by all Gateway connections to + // this endpoint. + ManagedChannel channel = newGrpcConnection(); + + Gateway.Builder builder = Gateway.newInstance().identity(newIdentity()).signer(newSigner()).connection(channel) + // Default timeouts for different gRPC calls + .evaluateOptions(CallOption.deadlineAfter(5, TimeUnit.SECONDS)) + .endorseOptions(CallOption.deadlineAfter(15, TimeUnit.SECONDS)) + .submitOptions(CallOption.deadlineAfter(5, TimeUnit.SECONDS)) + .commitStatusOptions(CallOption.deadlineAfter(1, TimeUnit.MINUTES)); + + try (Gateway gateway = builder.connect()) { + + // Get a network instance representing the channel where the smart contract is + // deployed. + Network network = gateway.getNetwork(channelName); + + // Get the smart contract from the network. + Contract contract = network.getContract(chaincodeName); + + // Initialize a set of asset data on the ledger using the chaincode 'InitLedger' + // function. + initLedger(contract); + + // Return all the current assets on the ledger. + getAllAssets(contract); + + // Create a new asset on the ledger. + createAsset(contract); + + // Update an existing asset asynchronously. + transferAssetAsync(contract); + + // Get the asset details by assetID. + readAssetById(contract); + + // Update an asset which does not exist. + updateNonExistentAsset(contract); + + } finally { + channel.shutdownNow().awaitTermination(5, TimeUnit.SECONDS); + + } + } + + private static ManagedChannel newGrpcConnection() throws IOException, CertificateException { + Reader tlsCertReader = Files.newBufferedReader(tlsCertPath); + X509Certificate tlsCert = Identities.readX509Certificate(tlsCertReader); + + return NettyChannelBuilder.forTarget(peerEndpoint) + .sslContext(GrpcSslContexts.forClient().trustManager(tlsCert).build()).overrideAuthority(overrideAuth) + .build(); + } + + private static Identity newIdentity() throws IOException, CertificateException { + Reader certReader = Files.newBufferedReader(certPath); + X509Certificate certificate = Identities.readX509Certificate(certReader); + + return new X509Identity(mspID, certificate); + } + + private static Signer newSigner() throws IOException, InvalidKeyException { + File dir = new File(keyPath.toString()); + File[] listOfFiles = dir.listFiles(); + Path path = Paths.get(listOfFiles[0].getPath()); + Reader keyReader = Files.newBufferedReader(path); + PrivateKey privateKey = Identities.readPrivateKey(keyReader); + + return Signers.newPrivateKeySigner(privateKey); + } + + private static final Gson gson = new GsonBuilder().setPrettyPrinting().create(); + + private static String prettyJson(byte[] json) { + return prettyJson(new String(json, StandardCharsets.UTF_8)); + } + + private static String prettyJson(String json) { + JsonElement parsedJson = JsonParser.parseString(json); + return gson.toJson(parsedJson); + } + + /** + * This type of transaction would typically only be run once by an application + * the first time it was started after its initial deployment. A new version of + * the chaincode deployed later would likely not need to run an "init" function. + */ + private static void initLedger(Contract contract) throws GatewayException, CommitException { + + System.out.println( + "\n" + "--> Submit Transaction: InitLedger, function creates the initial set of assets on the ledger"); + + contract.submitTransaction("InitLedger"); + + System.out.println("*** Transaction committed successfully"); + + } + + /** + * Evaluate a transaction to query ledger state. + */ + private static void getAllAssets(Contract contract) throws GatewayException { + + System.out.println( + "\n" + "--> Evaluate Transaction: GetAllAssets, function returns all the current assets on the ledger"); + + byte[] result = contract.evaluateTransaction("GetAllAssets"); + + System.out.println("*** Result: " + prettyJson(result)); + + } + + /** + * Submit a transaction synchronously, blocking until it has been committed to + * the ledger. + */ + private static void createAsset(Contract contract) throws GatewayException, CommitException { + + System.out.println("\n" + + "--> Submit Transaction: CreateAsset, creates new asset with ID, Color, Size, Owner and AppraisedValue arguments"); + + contract.submitTransaction("CreateAsset", assetId, "yellow", "5", "Tom", "1300"); + + System.out.println("*** Transaction committed successfully"); + + } + + /** + * Submit transaction asynchronously, allowing the application to process the + * smart contract response (e.g. update a UI) while waiting for the commit + * notification. + */ + private static void transferAssetAsync(Contract contract) throws GatewayException { + + System.out.println("\n" + "--> Async Submit Transaction: TransferAsset, updates existing asset owner"); + + SubmittedTransaction commit = contract.newProposal("TransferAsset") + .addArguments(assetId, "Saptha") + .build() + .endorse() + .submitAsync(); + + byte[] result = commit.getResult(); + String oldOwner = new String(result, StandardCharsets.UTF_8); + + System.out.println( + "*** Successfully submitted transaction to transfer ownership from " + oldOwner + " to Saptha"); + System.out.println("*** Waiting for transaction commit"); + + Status status = commit.getStatus(); + if (!status.isSuccessful()) { + throw new RuntimeException("Transaction " + status.getTransactionId() + " failed to commit with status code " + + status.getCode()); + + } + + System.out.println("*** Transaction committed successfully"); + + } + + private static void readAssetById(Contract contract) throws GatewayException { + + System.out.println("\n" + "--> Evaluate Transaction: ReadAsset, function returns asset attributes"); + + byte[] evaluateResult = contract.evaluateTransaction("ReadAsset", assetId); + + System.out.println("*** Result:" + prettyJson(evaluateResult)); + } + + /** + * submitTransaction() will throw an error containing details of any error + * responses from the smart contract. + */ + private static void updateNonExistentAsset(Contract contract) { + + try { + System.out.println("\n" + + "--> Submit Transaction: UpdateAsset asset70, asset70 does not exist and should return an error"); + + contract.submitTransaction("UpdateAsset", "asset70", "blue", "5", "Tomoko", "300"); + + System.out.println("******** FAILED to return an error"); + + } catch (EndorseException | SubmitException | CommitStatusException e) { + System.out.println("*** Successfully caught the error: "); + + e.printStackTrace(System.out); + if (!e.getDetails().isEmpty()) { + System.out.println("\n" + "Error Details: "); + for (ErrorDetail detail : e.getDetails()) { + System.out.println("address: " + detail.getAddress() + ", mspId: " + detail.getMspId() + + ", message: " + detail.getMessage()); + } + } + + System.out.println("Transaction ID: " + e.getTransactionId()); + + } catch (CommitException e) { + System.out.println("*** Successfully caught the error: " + e); + e.printStackTrace(System.out); + System.out.println("Transaction ID: " + e.getTransactionId() + " status code: " + e.getCode()); + } + } + +} \ No newline at end of file diff --git a/ci/scripts/run-test-network-basic.sh b/ci/scripts/run-test-network-basic.sh index 8627c6a6..08bee0b5 100755 --- a/ci/scripts/run-test-network-basic.sh +++ b/ci/scripts/run-test-network-basic.sh @@ -41,6 +41,15 @@ gradle run popd stopNetwork +# Run Java application using gateway +createNetwork +print "Initializing Java application" +pushd ../asset-transfer-basic/application-gateway-java +print "Executing Gradle Run" +gradle run +popd +stopNetwork + # Run Javascript application createNetwork print "Initializing Javascript application"