├── README.md ├── settings.gradle ├── .gitattributes ├── config └── checkstyle │ ├── suppressions.xml │ └── checkstyle.xml ├── .gitignore ├── src ├── test │ └── java │ │ └── org │ │ └── hyperledger │ │ └── fabric │ │ └── samples │ │ └── assettransfer │ │ ├── AssetTest.java │ │ └── AssetTransferTest.java └── main │ └── java │ └── org │ └── hyperledger │ └── fabric │ └── samples │ └── assettransfer │ ├── Asset.java │ └── AssetTransfer.java ├── gradlew.bat ├── gradlew └── LICENSE /README.md: -------------------------------------------------------------------------------- 1 | # fabric-ccaas-asset-transfer-basic-java 2 | Fabric asset transfer chaincode-as-a-service in Java 3 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | /* 2 | * SPDX-License-Identifier: Apache-2.0 3 | */ 4 | 5 | rootProject.name = 'basic' 6 | -------------------------------------------------------------------------------- /.gitattributes: -------------------------------------------------------------------------------- 1 | # 2 | # https://help.github.com/articles/dealing-with-line-endings/ 3 | # 4 | # These are explicitly windows files and should use crlf 5 | *.bat text eol=crlf 6 | 7 | -------------------------------------------------------------------------------- /config/checkstyle/suppressions.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 6 | 7 | 8 | 9 | 10 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | .gradle 2 | /build/ 3 | 4 | # Ignore Gradle GUI config 5 | gradle-app.setting 6 | 7 | # Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored) 8 | !gradle-wrapper.jar 9 | 10 | # Cache of project 11 | .gradletasknamecache 12 | 13 | # # Work around https://youtrack.jetbrains.com/issue/IDEA-116898 14 | # gradle/wrapper/gradle-wrapper.properties 15 | 16 | .idea/ 17 | 18 | gradle/ 19 | -------------------------------------------------------------------------------- /src/test/java/org/hyperledger/fabric/samples/assettransfer/AssetTest.java: -------------------------------------------------------------------------------- 1 | /* 2 | * SPDX-License-Identifier: Apache-2.0 3 | */ 4 | 5 | package org.hyperledger.fabric.samples.assettransfer; 6 | 7 | import static org.assertj.core.api.Assertions.assertThat; 8 | 9 | import org.junit.jupiter.api.Nested; 10 | import org.junit.jupiter.api.Test; 11 | 12 | public final class AssetTest { 13 | 14 | @Nested 15 | class Equality { 16 | 17 | @Test 18 | public void isReflexive() { 19 | Asset asset = new Asset("asset1", "Blue", 20, "Guy", 100); 20 | 21 | assertThat(asset).isEqualTo(asset); 22 | } 23 | 24 | @Test 25 | public void isSymmetric() { 26 | Asset assetA = new Asset("asset1", "Blue", 20, "Guy", 100); 27 | Asset assetB = new Asset("asset1", "Blue", 20, "Guy", 100); 28 | 29 | assertThat(assetA).isEqualTo(assetB); 30 | assertThat(assetB).isEqualTo(assetA); 31 | } 32 | 33 | @Test 34 | public void isTransitive() { 35 | Asset assetA = new Asset("asset1", "Blue", 20, "Guy", 100); 36 | Asset assetB = new Asset("asset1", "Blue", 20, "Guy", 100); 37 | Asset assetC = new Asset("asset1", "Blue", 20, "Guy", 100); 38 | 39 | assertThat(assetA).isEqualTo(assetB); 40 | assertThat(assetB).isEqualTo(assetC); 41 | assertThat(assetA).isEqualTo(assetC); 42 | } 43 | 44 | @Test 45 | public void handlesInequality() { 46 | Asset assetA = new Asset("asset1", "Blue", 20, "Guy", 100); 47 | Asset assetB = new Asset("asset2", "Red", 40, "Lady", 200); 48 | 49 | assertThat(assetA).isNotEqualTo(assetB); 50 | } 51 | 52 | @Test 53 | public void handlesOtherObjects() { 54 | Asset assetA = new Asset("asset1", "Blue", 20, "Guy", 100); 55 | String assetB = "not a asset"; 56 | 57 | assertThat(assetA).isNotEqualTo(assetB); 58 | } 59 | 60 | @Test 61 | public void handlesNull() { 62 | Asset asset = new Asset("asset1", "Blue", 20, "Guy", 100); 63 | 64 | assertThat(asset).isNotEqualTo(null); 65 | } 66 | } 67 | 68 | @Test 69 | public void toStringIdentifiesAsset() { 70 | Asset asset = new Asset("asset1", "Blue", 20, "Guy", 100); 71 | 72 | assertThat(asset.toString()).isEqualTo("Asset@e04f6c53 [assetID=asset1, color=Blue, size=20, owner=Guy, appraisedValue=100]"); 73 | } 74 | } 75 | -------------------------------------------------------------------------------- /src/main/java/org/hyperledger/fabric/samples/assettransfer/Asset.java: -------------------------------------------------------------------------------- 1 | /* 2 | * SPDX-License-Identifier: Apache-2.0 3 | */ 4 | 5 | package org.hyperledger.fabric.samples.assettransfer; 6 | 7 | import java.util.Objects; 8 | 9 | import org.hyperledger.fabric.contract.annotation.DataType; 10 | import org.hyperledger.fabric.contract.annotation.Property; 11 | 12 | import com.owlike.genson.annotation.JsonProperty; 13 | 14 | @DataType() 15 | public final class Asset { 16 | 17 | @Property() 18 | private final String assetID; 19 | 20 | @Property() 21 | private final String color; 22 | 23 | @Property() 24 | private final int size; 25 | 26 | @Property() 27 | private final String owner; 28 | 29 | @Property() 30 | private final int appraisedValue; 31 | 32 | public String getAssetID() { 33 | return assetID; 34 | } 35 | 36 | public String getColor() { 37 | return color; 38 | } 39 | 40 | public int getSize() { 41 | return size; 42 | } 43 | 44 | public String getOwner() { 45 | return owner; 46 | } 47 | 48 | public int getAppraisedValue() { 49 | return appraisedValue; 50 | } 51 | 52 | public Asset(@JsonProperty("assetID") final String assetID, @JsonProperty("color") final String color, 53 | @JsonProperty("size") final int size, @JsonProperty("owner") final String owner, 54 | @JsonProperty("appraisedValue") final int appraisedValue) { 55 | this.assetID = assetID; 56 | this.color = color; 57 | this.size = size; 58 | this.owner = owner; 59 | this.appraisedValue = appraisedValue; 60 | } 61 | 62 | @Override 63 | public boolean equals(final Object obj) { 64 | if (this == obj) { 65 | return true; 66 | } 67 | 68 | if ((obj == null) || (getClass() != obj.getClass())) { 69 | return false; 70 | } 71 | 72 | Asset other = (Asset) obj; 73 | 74 | return Objects.deepEquals( 75 | new String[] {getAssetID(), getColor(), getOwner()}, 76 | new String[] {other.getAssetID(), other.getColor(), other.getOwner()}) 77 | && 78 | Objects.deepEquals( 79 | new int[] {getSize(), getAppraisedValue()}, 80 | new int[] {other.getSize(), other.getAppraisedValue()}); 81 | } 82 | 83 | @Override 84 | public int hashCode() { 85 | return Objects.hash(getAssetID(), getColor(), getSize(), getOwner(), getAppraisedValue()); 86 | } 87 | 88 | @Override 89 | public String toString() { 90 | return this.getClass().getSimpleName() + "@" + Integer.toHexString(hashCode()) + " [assetID=" + assetID + ", color=" 91 | + color + ", size=" + size + ", owner=" + owner + ", appraisedValue=" + appraisedValue + "]"; 92 | } 93 | } 94 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @rem 2 | @rem Copyright 2015 the original author or authors. 3 | @rem 4 | @rem Licensed under the Apache License, Version 2.0 (the "License"); 5 | @rem you may not use this file except in compliance with the License. 6 | @rem You may obtain a copy of the License at 7 | @rem 8 | @rem https://www.apache.org/licenses/LICENSE-2.0 9 | @rem 10 | @rem Unless required by applicable law or agreed to in writing, software 11 | @rem distributed under the License is distributed on an "AS IS" BASIS, 12 | @rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | @rem See the License for the specific language governing permissions and 14 | @rem limitations under the License. 15 | @rem 16 | 17 | @if "%DEBUG%" == "" @echo off 18 | @rem ########################################################################## 19 | @rem 20 | @rem Gradle startup script for Windows 21 | @rem 22 | @rem ########################################################################## 23 | 24 | @rem Set local scope for the variables with windows NT shell 25 | if "%OS%"=="Windows_NT" setlocal 26 | 27 | set DIRNAME=%~dp0 28 | if "%DIRNAME%" == "" set DIRNAME=. 29 | set APP_BASE_NAME=%~n0 30 | set APP_HOME=%DIRNAME% 31 | 32 | @rem Resolve any "." and ".." in APP_HOME to make it shorter. 33 | for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi 34 | 35 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 36 | set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" 37 | 38 | @rem Find java.exe 39 | if defined JAVA_HOME goto findJavaFromJavaHome 40 | 41 | set JAVA_EXE=java.exe 42 | %JAVA_EXE% -version >NUL 2>&1 43 | if "%ERRORLEVEL%" == "0" goto execute 44 | 45 | echo. 46 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 47 | echo. 48 | echo Please set the JAVA_HOME variable in your environment to match the 49 | echo location of your Java installation. 50 | 51 | goto fail 52 | 53 | :findJavaFromJavaHome 54 | set JAVA_HOME=%JAVA_HOME:"=% 55 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 56 | 57 | if exist "%JAVA_EXE%" goto execute 58 | 59 | echo. 60 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 61 | echo. 62 | echo Please set the JAVA_HOME variable in your environment to match the 63 | echo location of your Java installation. 64 | 65 | goto fail 66 | 67 | :execute 68 | @rem Setup the command line 69 | 70 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 71 | 72 | 73 | @rem Execute Gradle 74 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* 75 | 76 | :end 77 | @rem End local scope for the variables with windows NT shell 78 | if "%ERRORLEVEL%"=="0" goto mainEnd 79 | 80 | :fail 81 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 82 | rem the _cmd.exe /c_ return code! 83 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 84 | exit /b 1 85 | 86 | :mainEnd 87 | if "%OS%"=="Windows_NT" endlocal 88 | 89 | :omega 90 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | # 4 | # Copyright 2015 the original author or authors. 5 | # 6 | # Licensed under the Apache License, Version 2.0 (the "License"); 7 | # you may not use this file except in compliance with the License. 8 | # You may obtain a copy of the License at 9 | # 10 | # https://www.apache.org/licenses/LICENSE-2.0 11 | # 12 | # Unless required by applicable law or agreed to in writing, software 13 | # distributed under the License is distributed on an "AS IS" BASIS, 14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 | # See the License for the specific language governing permissions and 16 | # limitations under the License. 17 | # 18 | 19 | ############################################################################## 20 | ## 21 | ## Gradle start up script for UN*X 22 | ## 23 | ############################################################################## 24 | 25 | # Attempt to set APP_HOME 26 | # Resolve links: $0 may be a link 27 | PRG="$0" 28 | # Need this for relative symlinks. 29 | while [ -h "$PRG" ] ; do 30 | ls=`ls -ld "$PRG"` 31 | link=`expr "$ls" : '.*-> \(.*\)$'` 32 | if expr "$link" : '/.*' > /dev/null; then 33 | PRG="$link" 34 | else 35 | PRG=`dirname "$PRG"`"/$link" 36 | fi 37 | done 38 | SAVED="`pwd`" 39 | cd "`dirname \"$PRG\"`/" >/dev/null 40 | APP_HOME="`pwd -P`" 41 | cd "$SAVED" >/dev/null 42 | 43 | APP_NAME="Gradle" 44 | APP_BASE_NAME=`basename "$0"` 45 | 46 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 47 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' 48 | 49 | # Use the maximum available, or set MAX_FD != -1 to use that value. 50 | MAX_FD="maximum" 51 | 52 | warn () { 53 | echo "$*" 54 | } 55 | 56 | die () { 57 | echo 58 | echo "$*" 59 | echo 60 | exit 1 61 | } 62 | 63 | # OS specific support (must be 'true' or 'false'). 64 | cygwin=false 65 | msys=false 66 | darwin=false 67 | nonstop=false 68 | case "`uname`" in 69 | CYGWIN* ) 70 | cygwin=true 71 | ;; 72 | Darwin* ) 73 | darwin=true 74 | ;; 75 | MSYS* | MINGW* ) 76 | msys=true 77 | ;; 78 | NONSTOP* ) 79 | nonstop=true 80 | ;; 81 | esac 82 | 83 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 84 | 85 | 86 | # Determine the Java command to use to start the JVM. 87 | if [ -n "$JAVA_HOME" ] ; then 88 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 89 | # IBM's JDK on AIX uses strange locations for the executables 90 | JAVACMD="$JAVA_HOME/jre/sh/java" 91 | else 92 | JAVACMD="$JAVA_HOME/bin/java" 93 | fi 94 | if [ ! -x "$JAVACMD" ] ; then 95 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 96 | 97 | Please set the JAVA_HOME variable in your environment to match the 98 | location of your Java installation." 99 | fi 100 | else 101 | JAVACMD="java" 102 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 103 | 104 | Please set the JAVA_HOME variable in your environment to match the 105 | location of your Java installation." 106 | fi 107 | 108 | # Increase the maximum file descriptors if we can. 109 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 110 | MAX_FD_LIMIT=`ulimit -H -n` 111 | if [ $? -eq 0 ] ; then 112 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 113 | MAX_FD="$MAX_FD_LIMIT" 114 | fi 115 | ulimit -n $MAX_FD 116 | if [ $? -ne 0 ] ; then 117 | warn "Could not set maximum file descriptor limit: $MAX_FD" 118 | fi 119 | else 120 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 121 | fi 122 | fi 123 | 124 | # For Darwin, add options to specify how the application appears in the dock 125 | if $darwin; then 126 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 127 | fi 128 | 129 | # For Cygwin or MSYS, switch paths to Windows format before running java 130 | if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then 131 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 132 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 133 | 134 | JAVACMD=`cygpath --unix "$JAVACMD"` 135 | 136 | # We build the pattern for arguments to be converted via cygpath 137 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 138 | SEP="" 139 | for dir in $ROOTDIRSRAW ; do 140 | ROOTDIRS="$ROOTDIRS$SEP$dir" 141 | SEP="|" 142 | done 143 | OURCYGPATTERN="(^($ROOTDIRS))" 144 | # Add a user-defined pattern to the cygpath arguments 145 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 146 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 147 | fi 148 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 149 | i=0 150 | for arg in "$@" ; do 151 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 152 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 153 | 154 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 155 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 156 | else 157 | eval `echo args$i`="\"$arg\"" 158 | fi 159 | i=`expr $i + 1` 160 | done 161 | case $i in 162 | 0) set -- ;; 163 | 1) set -- "$args0" ;; 164 | 2) set -- "$args0" "$args1" ;; 165 | 3) set -- "$args0" "$args1" "$args2" ;; 166 | 4) set -- "$args0" "$args1" "$args2" "$args3" ;; 167 | 5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 168 | 6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 169 | 7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 170 | 8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 171 | 9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 172 | esac 173 | fi 174 | 175 | # Escape application args 176 | save () { 177 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 178 | echo " " 179 | } 180 | APP_ARGS=`save "$@"` 181 | 182 | # Collect all arguments for the java command, following the shell quoting and substitution rules 183 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 184 | 185 | exec "$JAVACMD" "$@" 186 | -------------------------------------------------------------------------------- /config/checkstyle/checkstyle.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 20 | 21 | 22 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | 117 | 118 | 119 | 120 | 121 | 122 | 123 | 124 | 125 | 126 | 127 | 128 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | 136 | 137 | 138 | 139 | 140 | 141 | 142 | 143 | 144 | 145 | 146 | 147 | 148 | 149 | 150 | 151 | 152 | 153 | 154 | 155 | 156 | 157 | 158 | 159 | 160 | 161 | 162 | 163 | 164 | 165 | 166 | 167 | 168 | 169 | 170 | 171 | 172 | -------------------------------------------------------------------------------- /src/main/java/org/hyperledger/fabric/samples/assettransfer/AssetTransfer.java: -------------------------------------------------------------------------------- 1 | /* 2 | * SPDX-License-Identifier: Apache-2.0 3 | */ 4 | 5 | package org.hyperledger.fabric.samples.assettransfer; 6 | 7 | import java.util.ArrayList; 8 | import java.util.List; 9 | 10 | 11 | import org.hyperledger.fabric.contract.Context; 12 | import org.hyperledger.fabric.contract.ContractInterface; 13 | import org.hyperledger.fabric.contract.annotation.Contact; 14 | import org.hyperledger.fabric.contract.annotation.Contract; 15 | import org.hyperledger.fabric.contract.annotation.Default; 16 | import org.hyperledger.fabric.contract.annotation.Info; 17 | import org.hyperledger.fabric.contract.annotation.License; 18 | import org.hyperledger.fabric.contract.annotation.Transaction; 19 | import org.hyperledger.fabric.shim.ChaincodeException; 20 | import org.hyperledger.fabric.shim.ChaincodeStub; 21 | import org.hyperledger.fabric.shim.ledger.KeyValue; 22 | import org.hyperledger.fabric.shim.ledger.QueryResultsIterator; 23 | 24 | import com.owlike.genson.Genson; 25 | 26 | @Contract( 27 | name = "basic", 28 | info = @Info( 29 | title = "Asset Transfer", 30 | description = "The hyperlegendary asset transfer", 31 | version = "0.0.1-SNAPSHOT", 32 | license = @License( 33 | name = "Apache 2.0 License", 34 | url = "http://www.apache.org/licenses/LICENSE-2.0.html"), 35 | contact = @Contact( 36 | email = "a.transfer@example.com", 37 | name = "Adrian Transfer", 38 | url = "https://hyperledger.example.com"))) 39 | @Default 40 | public final class AssetTransfer implements ContractInterface { 41 | 42 | private final Genson genson = new Genson(); 43 | 44 | private enum AssetTransferErrors { 45 | ASSET_NOT_FOUND, 46 | ASSET_ALREADY_EXISTS 47 | } 48 | 49 | /** 50 | * Creates some initial assets on the ledger. 51 | * 52 | * @param ctx the transaction context 53 | */ 54 | @Transaction(intent = Transaction.TYPE.SUBMIT) 55 | public void InitLedger(final Context ctx) { 56 | ChaincodeStub stub = ctx.getStub(); 57 | 58 | CreateAsset(ctx, "asset1", "blue", 5, "Tomoko", 300); 59 | CreateAsset(ctx, "asset2", "red", 5, "Brad", 400); 60 | CreateAsset(ctx, "asset3", "green", 10, "Jin Soo", 500); 61 | CreateAsset(ctx, "asset4", "yellow", 10, "Max", 600); 62 | CreateAsset(ctx, "asset5", "black", 15, "Adrian", 700); 63 | CreateAsset(ctx, "asset6", "white", 15, "Michel", 700); 64 | 65 | } 66 | 67 | /** 68 | * Creates a new asset on the ledger. 69 | * 70 | * @param ctx the transaction context 71 | * @param assetID the ID of the new asset 72 | * @param color the color of the new asset 73 | * @param size the size for the new asset 74 | * @param owner the owner of the new asset 75 | * @param appraisedValue the appraisedValue of the new asset 76 | * @return the created asset 77 | */ 78 | @Transaction(intent = Transaction.TYPE.SUBMIT) 79 | public Asset CreateAsset(final Context ctx, final String assetID, final String color, final int size, 80 | final String owner, final int appraisedValue) { 81 | ChaincodeStub stub = ctx.getStub(); 82 | 83 | if (AssetExists(ctx, assetID)) { 84 | String errorMessage = String.format("Asset %s already exists", assetID); 85 | System.out.println(errorMessage); 86 | throw new ChaincodeException(errorMessage, AssetTransferErrors.ASSET_ALREADY_EXISTS.toString()); 87 | } 88 | 89 | Asset asset = new Asset(assetID, color, size, owner, appraisedValue); 90 | //Use Genson to convert the Asset into string, sort it alphabetically and serialize it into a json string 91 | String sortedJson = genson.serialize(asset); 92 | stub.putStringState(assetID, sortedJson); 93 | 94 | return asset; 95 | } 96 | 97 | /** 98 | * Retrieves an asset with the specified ID from the ledger. 99 | * 100 | * @param ctx the transaction context 101 | * @param assetID the ID of the asset 102 | * @return the asset found on the ledger if there was one 103 | */ 104 | @Transaction(intent = Transaction.TYPE.EVALUATE) 105 | public Asset ReadAsset(final Context ctx, final String assetID) { 106 | ChaincodeStub stub = ctx.getStub(); 107 | String assetJSON = stub.getStringState(assetID); 108 | 109 | if (assetJSON == null || assetJSON.isEmpty()) { 110 | String errorMessage = String.format("Asset %s does not exist", assetID); 111 | System.out.println(errorMessage); 112 | throw new ChaincodeException(errorMessage, AssetTransferErrors.ASSET_NOT_FOUND.toString()); 113 | } 114 | 115 | Asset asset = genson.deserialize(assetJSON, Asset.class); 116 | return asset; 117 | } 118 | 119 | /** 120 | * Updates the properties of an asset on the ledger. 121 | * 122 | * @param ctx the transaction context 123 | * @param assetID the ID of the asset being updated 124 | * @param color the color of the asset being updated 125 | * @param size the size of the asset being updated 126 | * @param owner the owner of the asset being updated 127 | * @param appraisedValue the appraisedValue of the asset being updated 128 | * @return the transferred asset 129 | */ 130 | @Transaction(intent = Transaction.TYPE.SUBMIT) 131 | public Asset UpdateAsset(final Context ctx, final String assetID, final String color, final int size, 132 | final String owner, final int appraisedValue) { 133 | ChaincodeStub stub = ctx.getStub(); 134 | 135 | if (!AssetExists(ctx, assetID)) { 136 | String errorMessage = String.format("Asset %s does not exist", assetID); 137 | System.out.println(errorMessage); 138 | throw new ChaincodeException(errorMessage, AssetTransferErrors.ASSET_NOT_FOUND.toString()); 139 | } 140 | 141 | Asset newAsset = new Asset(assetID, color, size, owner, appraisedValue); 142 | //Use Genson to convert the Asset into string, sort it alphabetically and serialize it into a json string 143 | String sortedJson = genson.serialize(newAsset); 144 | stub.putStringState(assetID, sortedJson); 145 | return newAsset; 146 | } 147 | 148 | /** 149 | * Deletes asset on the ledger. 150 | * 151 | * @param ctx the transaction context 152 | * @param assetID the ID of the asset being deleted 153 | */ 154 | @Transaction(intent = Transaction.TYPE.SUBMIT) 155 | public void DeleteAsset(final Context ctx, final String assetID) { 156 | ChaincodeStub stub = ctx.getStub(); 157 | 158 | if (!AssetExists(ctx, assetID)) { 159 | String errorMessage = String.format("Asset %s does not exist", assetID); 160 | System.out.println(errorMessage); 161 | throw new ChaincodeException(errorMessage, AssetTransferErrors.ASSET_NOT_FOUND.toString()); 162 | } 163 | 164 | stub.delState(assetID); 165 | } 166 | 167 | /** 168 | * Checks the existence of the asset on the ledger 169 | * 170 | * @param ctx the transaction context 171 | * @param assetID the ID of the asset 172 | * @return boolean indicating the existence of the asset 173 | */ 174 | @Transaction(intent = Transaction.TYPE.EVALUATE) 175 | public boolean AssetExists(final Context ctx, final String assetID) { 176 | ChaincodeStub stub = ctx.getStub(); 177 | String assetJSON = stub.getStringState(assetID); 178 | 179 | return (assetJSON != null && !assetJSON.isEmpty()); 180 | } 181 | 182 | /** 183 | * Changes the owner of a asset on the ledger. 184 | * 185 | * @param ctx the transaction context 186 | * @param assetID the ID of the asset being transferred 187 | * @param newOwner the new owner 188 | * @return the updated asset 189 | */ 190 | @Transaction(intent = Transaction.TYPE.SUBMIT) 191 | public Asset TransferAsset(final Context ctx, final String assetID, final String newOwner) { 192 | ChaincodeStub stub = ctx.getStub(); 193 | String assetJSON = stub.getStringState(assetID); 194 | 195 | if (assetJSON == null || assetJSON.isEmpty()) { 196 | String errorMessage = String.format("Asset %s does not exist", assetID); 197 | System.out.println(errorMessage); 198 | throw new ChaincodeException(errorMessage, AssetTransferErrors.ASSET_NOT_FOUND.toString()); 199 | } 200 | 201 | Asset asset = genson.deserialize(assetJSON, Asset.class); 202 | 203 | Asset newAsset = new Asset(asset.getAssetID(), asset.getColor(), asset.getSize(), newOwner, asset.getAppraisedValue()); 204 | //Use a Genson to conver the Asset into string, sort it alphabetically and serialize it into a json string 205 | String sortedJson = genson.serialize(newAsset); 206 | stub.putStringState(assetID, sortedJson); 207 | 208 | return newAsset; 209 | } 210 | 211 | /** 212 | * Retrieves all assets from the ledger. 213 | * 214 | * @param ctx the transaction context 215 | * @return array of assets found on the ledger 216 | */ 217 | @Transaction(intent = Transaction.TYPE.EVALUATE) 218 | public String GetAllAssets(final Context ctx) { 219 | ChaincodeStub stub = ctx.getStub(); 220 | 221 | List queryResults = new ArrayList(); 222 | 223 | // To retrieve all assets from the ledger use getStateByRange with empty startKey & endKey. 224 | // Giving empty startKey & endKey is interpreted as all the keys from beginning to end. 225 | // As another example, if you use startKey = 'asset0', endKey = 'asset9' , 226 | // then getStateByRange will retrieve asset with keys between asset0 (inclusive) and asset9 (exclusive) in lexical order. 227 | QueryResultsIterator results = stub.getStateByRange("", ""); 228 | 229 | for (KeyValue result: results) { 230 | Asset asset = genson.deserialize(result.getStringValue(), Asset.class); 231 | System.out.println(asset); 232 | queryResults.add(asset); 233 | } 234 | 235 | final String response = genson.serialize(queryResults); 236 | 237 | return response; 238 | } 239 | } 240 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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6 | 7 | import static org.assertj.core.api.Assertions.assertThat; 8 | import static org.assertj.core.api.ThrowableAssert.catchThrowable; 9 | import static org.mockito.Mockito.inOrder; 10 | import static org.mockito.Mockito.mock; 11 | import static org.mockito.Mockito.verifyZeroInteractions; 12 | import static org.mockito.Mockito.when; 13 | 14 | import java.util.ArrayList; 15 | import java.util.Iterator; 16 | import java.util.List; 17 | 18 | import org.hyperledger.fabric.contract.Context; 19 | import org.hyperledger.fabric.shim.ChaincodeException; 20 | import org.hyperledger.fabric.shim.ChaincodeStub; 21 | import org.hyperledger.fabric.shim.ledger.KeyValue; 22 | import org.hyperledger.fabric.shim.ledger.QueryResultsIterator; 23 | import org.junit.jupiter.api.Nested; 24 | import org.junit.jupiter.api.Test; 25 | import org.mockito.InOrder; 26 | 27 | public final class AssetTransferTest { 28 | 29 | private final class MockKeyValue implements KeyValue { 30 | 31 | private final String key; 32 | private final String value; 33 | 34 | MockKeyValue(final String key, final String value) { 35 | super(); 36 | this.key = key; 37 | this.value = value; 38 | } 39 | 40 | @Override 41 | public String getKey() { 42 | return this.key; 43 | } 44 | 45 | @Override 46 | public String getStringValue() { 47 | return this.value; 48 | } 49 | 50 | @Override 51 | public byte[] getValue() { 52 | return this.value.getBytes(); 53 | } 54 | 55 | } 56 | 57 | private final class MockAssetResultsIterator implements QueryResultsIterator { 58 | 59 | private final List assetList; 60 | 61 | MockAssetResultsIterator() { 62 | super(); 63 | 64 | assetList = new ArrayList(); 65 | 66 | assetList.add(new MockKeyValue("asset1", 67 | "{ \"assetID\": \"asset1\", \"color\": \"blue\", \"size\": 5, \"owner\": \"Tomoko\", \"appraisedValue\": 300 }")); 68 | assetList.add(new MockKeyValue("asset2", 69 | "{ \"assetID\": \"asset2\", \"color\": \"red\", \"size\": 5,\"owner\": \"Brad\", \"appraisedValue\": 400 }")); 70 | assetList.add(new MockKeyValue("asset3", 71 | "{ \"assetID\": \"asset3\", \"color\": \"green\", \"size\": 10,\"owner\": \"Jin Soo\", \"appraisedValue\": 500 }")); 72 | assetList.add(new MockKeyValue("asset4", 73 | "{ \"assetID\": \"asset4\", \"color\": \"yellow\", \"size\": 10,\"owner\": \"Max\", \"appraisedValue\": 600 }")); 74 | assetList.add(new MockKeyValue("asset5", 75 | "{ \"assetID\": \"asset5\", \"color\": \"black\", \"size\": 15,\"owner\": \"Adrian\", \"appraisedValue\": 700 }")); 76 | assetList.add(new MockKeyValue("asset6", 77 | "{ \"assetID\": \"asset6\", \"color\": \"white\", \"size\": 15,\"owner\": \"Michel\", \"appraisedValue\": 800 }")); 78 | } 79 | 80 | @Override 81 | public Iterator iterator() { 82 | return assetList.iterator(); 83 | } 84 | 85 | @Override 86 | public void close() throws Exception { 87 | // do nothing 88 | } 89 | 90 | } 91 | 92 | @Test 93 | public void invokeUnknownTransaction() { 94 | AssetTransfer contract = new AssetTransfer(); 95 | Context ctx = mock(Context.class); 96 | 97 | Throwable thrown = catchThrowable(() -> { 98 | contract.unknownTransaction(ctx); 99 | }); 100 | 101 | assertThat(thrown).isInstanceOf(ChaincodeException.class).hasNoCause() 102 | .hasMessage("Undefined contract method called"); 103 | assertThat(((ChaincodeException) thrown).getPayload()).isEqualTo(null); 104 | 105 | verifyZeroInteractions(ctx); 106 | } 107 | 108 | @Nested 109 | class InvokeReadAssetTransaction { 110 | 111 | @Test 112 | public void whenAssetExists() { 113 | AssetTransfer contract = new AssetTransfer(); 114 | Context ctx = mock(Context.class); 115 | ChaincodeStub stub = mock(ChaincodeStub.class); 116 | when(ctx.getStub()).thenReturn(stub); 117 | when(stub.getStringState("asset1")) 118 | .thenReturn("{ \"assetID\": \"asset1\", \"color\": \"blue\", \"size\": 5, \"owner\": \"Tomoko\", \"appraisedValue\": 300 }"); 119 | 120 | Asset asset = contract.ReadAsset(ctx, "asset1"); 121 | 122 | assertThat(asset).isEqualTo(new Asset("asset1", "blue", 5, "Tomoko", 300)); 123 | } 124 | 125 | @Test 126 | public void whenAssetDoesNotExist() { 127 | AssetTransfer contract = new AssetTransfer(); 128 | Context ctx = mock(Context.class); 129 | ChaincodeStub stub = mock(ChaincodeStub.class); 130 | when(ctx.getStub()).thenReturn(stub); 131 | when(stub.getStringState("asset1")).thenReturn(""); 132 | 133 | Throwable thrown = catchThrowable(() -> { 134 | contract.ReadAsset(ctx, "asset1"); 135 | }); 136 | 137 | assertThat(thrown).isInstanceOf(ChaincodeException.class).hasNoCause() 138 | .hasMessage("Asset asset1 does not exist"); 139 | assertThat(((ChaincodeException) thrown).getPayload()).isEqualTo("ASSET_NOT_FOUND".getBytes()); 140 | } 141 | } 142 | 143 | @Test 144 | void invokeInitLedgerTransaction() { 145 | AssetTransfer contract = new AssetTransfer(); 146 | Context ctx = mock(Context.class); 147 | ChaincodeStub stub = mock(ChaincodeStub.class); 148 | when(ctx.getStub()).thenReturn(stub); 149 | 150 | contract.InitLedger(ctx); 151 | 152 | InOrder inOrder = inOrder(stub); 153 | inOrder.verify(stub).putStringState("asset1", "{\"appraisedValue\":300,\"assetID\":\"asset1\",\"color\":\"blue\",\"owner\":\"Tomoko\",\"size\":5}"); 154 | inOrder.verify(stub).putStringState("asset2", "{\"appraisedValue\":400,\"assetID\":\"asset2\",\"color\":\"red\",\"owner\":\"Brad\",\"size\":5}"); 155 | inOrder.verify(stub).putStringState("asset3", "{\"appraisedValue\":500,\"assetID\":\"asset3\",\"color\":\"green\",\"owner\":\"Jin Soo\",\"size\":10}"); 156 | inOrder.verify(stub).putStringState("asset4", "{\"appraisedValue\":600,\"assetID\":\"asset4\",\"color\":\"yellow\",\"owner\":\"Max\",\"size\":10}"); 157 | inOrder.verify(stub).putStringState("asset5", "{\"appraisedValue\":700,\"assetID\":\"asset5\",\"color\":\"black\",\"owner\":\"Adrian\",\"size\":15}"); 158 | 159 | } 160 | 161 | @Nested 162 | class InvokeCreateAssetTransaction { 163 | 164 | @Test 165 | public void whenAssetExists() { 166 | AssetTransfer contract = new AssetTransfer(); 167 | Context ctx = mock(Context.class); 168 | ChaincodeStub stub = mock(ChaincodeStub.class); 169 | when(ctx.getStub()).thenReturn(stub); 170 | when(stub.getStringState("asset1")) 171 | .thenReturn("{ \"assetID\": \"asset1\", \"color\": \"blue\", \"size\": 5, \"owner\": \"Tomoko\", \"appraisedValue\": 300 }"); 172 | 173 | Throwable thrown = catchThrowable(() -> { 174 | contract.CreateAsset(ctx, "asset1", "blue", 45, "Siobhán", 60); 175 | }); 176 | 177 | assertThat(thrown).isInstanceOf(ChaincodeException.class).hasNoCause() 178 | .hasMessage("Asset asset1 already exists"); 179 | assertThat(((ChaincodeException) thrown).getPayload()).isEqualTo("ASSET_ALREADY_EXISTS".getBytes()); 180 | } 181 | 182 | @Test 183 | public void whenAssetDoesNotExist() { 184 | AssetTransfer contract = new AssetTransfer(); 185 | Context ctx = mock(Context.class); 186 | ChaincodeStub stub = mock(ChaincodeStub.class); 187 | when(ctx.getStub()).thenReturn(stub); 188 | when(stub.getStringState("asset1")).thenReturn(""); 189 | 190 | Asset asset = contract.CreateAsset(ctx, "asset1", "blue", 45, "Siobhán", 60); 191 | 192 | assertThat(asset).isEqualTo(new Asset("asset1", "blue", 45, "Siobhán", 60)); 193 | } 194 | } 195 | 196 | @Test 197 | void invokeGetAllAssetsTransaction() { 198 | AssetTransfer contract = new AssetTransfer(); 199 | Context ctx = mock(Context.class); 200 | ChaincodeStub stub = mock(ChaincodeStub.class); 201 | when(ctx.getStub()).thenReturn(stub); 202 | when(stub.getStateByRange("", "")).thenReturn(new MockAssetResultsIterator()); 203 | 204 | String assets = contract.GetAllAssets(ctx); 205 | 206 | assertThat(assets).isEqualTo("[{\"appraisedValue\":300,\"assetID\":\"asset1\",\"color\":\"blue\",\"owner\":\"Tomoko\",\"size\":5}," 207 | + "{\"appraisedValue\":400,\"assetID\":\"asset2\",\"color\":\"red\",\"owner\":\"Brad\",\"size\":5}," 208 | + "{\"appraisedValue\":500,\"assetID\":\"asset3\",\"color\":\"green\",\"owner\":\"Jin Soo\",\"size\":10}," 209 | + "{\"appraisedValue\":600,\"assetID\":\"asset4\",\"color\":\"yellow\",\"owner\":\"Max\",\"size\":10}," 210 | + "{\"appraisedValue\":700,\"assetID\":\"asset5\",\"color\":\"black\",\"owner\":\"Adrian\",\"size\":15}," 211 | + "{\"appraisedValue\":800,\"assetID\":\"asset6\",\"color\":\"white\",\"owner\":\"Michel\",\"size\":15}]"); 212 | 213 | } 214 | 215 | @Nested 216 | class TransferAssetTransaction { 217 | 218 | @Test 219 | public void whenAssetExists() { 220 | AssetTransfer contract = new AssetTransfer(); 221 | Context ctx = mock(Context.class); 222 | ChaincodeStub stub = mock(ChaincodeStub.class); 223 | when(ctx.getStub()).thenReturn(stub); 224 | when(stub.getStringState("asset1")) 225 | .thenReturn("{ \"assetID\": \"asset1\", \"color\": \"blue\", \"size\": 5, \"owner\": \"Tomoko\", \"appraisedValue\": 300 }"); 226 | 227 | Asset asset = contract.TransferAsset(ctx, "asset1", "Dr Evil"); 228 | 229 | assertThat(asset).isEqualTo(new Asset("asset1", "blue", 5, "Dr Evil", 300)); 230 | } 231 | 232 | @Test 233 | public void whenAssetDoesNotExist() { 234 | AssetTransfer contract = new AssetTransfer(); 235 | Context ctx = mock(Context.class); 236 | ChaincodeStub stub = mock(ChaincodeStub.class); 237 | when(ctx.getStub()).thenReturn(stub); 238 | when(stub.getStringState("asset1")).thenReturn(""); 239 | 240 | Throwable thrown = catchThrowable(() -> { 241 | contract.TransferAsset(ctx, "asset1", "Dr Evil"); 242 | }); 243 | 244 | assertThat(thrown).isInstanceOf(ChaincodeException.class).hasNoCause() 245 | .hasMessage("Asset asset1 does not exist"); 246 | assertThat(((ChaincodeException) thrown).getPayload()).isEqualTo("ASSET_NOT_FOUND".getBytes()); 247 | } 248 | } 249 | 250 | @Nested 251 | class UpdateAssetTransaction { 252 | 253 | @Test 254 | public void whenAssetExists() { 255 | AssetTransfer contract = new AssetTransfer(); 256 | Context ctx = mock(Context.class); 257 | ChaincodeStub stub = mock(ChaincodeStub.class); 258 | when(ctx.getStub()).thenReturn(stub); 259 | when(stub.getStringState("asset1")) 260 | .thenReturn("{ \"assetID\": \"asset1\", \"color\": \"blue\", \"size\": 45, \"owner\": \"Arturo\", \"appraisedValue\": 60 }"); 261 | 262 | Asset asset = contract.UpdateAsset(ctx, "asset1", "pink", 45, "Arturo", 600); 263 | 264 | assertThat(asset).isEqualTo(new Asset("asset1", "pink", 45, "Arturo", 600)); 265 | } 266 | 267 | @Test 268 | public void whenAssetDoesNotExist() { 269 | AssetTransfer contract = new AssetTransfer(); 270 | Context ctx = mock(Context.class); 271 | ChaincodeStub stub = mock(ChaincodeStub.class); 272 | when(ctx.getStub()).thenReturn(stub); 273 | when(stub.getStringState("asset1")).thenReturn(""); 274 | 275 | Throwable thrown = catchThrowable(() -> { 276 | contract.TransferAsset(ctx, "asset1", "Alex"); 277 | }); 278 | 279 | assertThat(thrown).isInstanceOf(ChaincodeException.class).hasNoCause() 280 | .hasMessage("Asset asset1 does not exist"); 281 | assertThat(((ChaincodeException) thrown).getPayload()).isEqualTo("ASSET_NOT_FOUND".getBytes()); 282 | } 283 | } 284 | 285 | @Nested 286 | class DeleteAssetTransaction { 287 | 288 | @Test 289 | public void whenAssetDoesNotExist() { 290 | AssetTransfer contract = new AssetTransfer(); 291 | Context ctx = mock(Context.class); 292 | ChaincodeStub stub = mock(ChaincodeStub.class); 293 | when(ctx.getStub()).thenReturn(stub); 294 | when(stub.getStringState("asset1")).thenReturn(""); 295 | 296 | Throwable thrown = catchThrowable(() -> { 297 | contract.DeleteAsset(ctx, "asset1"); 298 | }); 299 | 300 | assertThat(thrown).isInstanceOf(ChaincodeException.class).hasNoCause() 301 | .hasMessage("Asset asset1 does not exist"); 302 | assertThat(((ChaincodeException) thrown).getPayload()).isEqualTo("ASSET_NOT_FOUND".getBytes()); 303 | } 304 | } 305 | } 306 | --------------------------------------------------------------------------------