epistemophiliac/fabric-samples
1
0
Fork 0
mirror of https://github.com/hyperledger/fabric-samples.git synced 2026-06-17 07:25:10 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

java chaincode for private-data sample

Browse source 
Java chaincode that can be deployed via test-network, with shortname 'private'
Unit test for core transactions
Bugfix for QueryAsset txn function signature
Incorporated PR feedback

Signed-off-by: Sijo Cherian <sijo@ibm.com>
This commit is contained in:
Sijo Cherian 2020-10-06 23:23:53 -04:00 committed by denyeart
parent e29ee4d7d9
commit a80dc201ad
17 changed files with 1583 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
asset-transfer-private-data/chaincode-java/.gitattributes vendored Normal file
View file

@ -0,0 +1,6 @@
#
# https://help.github.com/articles/dealing-with-line-endings/
#
# These are explicitly windows files and should use crlf
*.bat text eol=crlf

11
asset-transfer-private-data/chaincode-java/META-INF/statedb/couchdb/collections/assetCollection/indexes/indexOwner.json Normal file
View file

@ -0,0 +1,11 @@
{
"index": {
"fields": [
"objectType",
"owner"
]
},
"ddoc": "indexOwnerDoc",
"name": "indexOwner",
"type": "json"
}

62
asset-transfer-private-data/chaincode-java/build.gradle Normal file
View file

@ -0,0 +1,62 @@
/*
* SPDX-License-Identifier: Apache-2.0
*/
plugins {
id 'application'
id 'checkstyle'
id 'jacoco'
}
group 'org.hyperledger.fabric.samples'
version '1.0-SNAPSHOT'
dependencies {
compileOnly 'org.hyperledger.fabric-chaincode-java:fabric-chaincode-shim:2.+'
testImplementation 'org.hyperledger.fabric-chaincode-java:fabric-chaincode-shim:2.+'
testImplementation 'org.junit.jupiter:junit-jupiter:5.4.2'
testImplementation 'org.assertj:assertj-core:3.11.1'
testImplementation 'org.mockito:mockito-core:2.+'
}
repositories {
maven {
url "https://hyperledger.jfrog.io/hyperledger/fabric-maven"
}
jcenter()
maven {
url 'https://jitpack.io'
}
}
application {
mainClass = 'org.hyperledger.fabric.contract.ContractRouter'
}
checkstyle {
toolVersion '8.21'
configFile file("config/checkstyle/checkstyle.xml")
}
checkstyleMain {
source ='src/main/java'
}
checkstyleTest {
source ='src/test/java'
}
jacocoTestReport {
dependsOn test
}
test {
useJUnitPlatform()
testLogging {
events "passed", "skipped", "failed"
}
}
installDist.dependsOn check

35
asset-transfer-private-data/chaincode-java/collections_config.json Normal file
View file

@ -0,0 +1,35 @@
[
{
"name": "assetCollection",
"policy": "OR('Org1MSP.member', 'Org2MSP.member')",
"requiredPeerCount": 1,
"maxPeerCount": 1,
"blockToLive":1000000,
"memberOnlyRead": true,
"memberOnlyWrite": true
},
{
"name": "Org1MSPPrivateCollection",
"policy": "OR('Org1MSP.member')",
"requiredPeerCount": 0,
"maxPeerCount": 1,
"blockToLive":3,
"memberOnlyRead": true,
"memberOnlyWrite": false,
"endorsementPolicy": {
"signaturePolicy": "OR('Org1MSP.member')"
}
},
{
"name": "Org2MSPPrivateCollection",
"policy": "OR('Org2MSP.member')",
"requiredPeerCount": 0,
"maxPeerCount": 1,
"blockToLive":3,
"memberOnlyRead": true,
"memberOnlyWrite": false,
"endorsementPolicy": {
"signaturePolicy": "OR('Org2MSP.member')"
}
}
]

171
asset-transfer-private-data/chaincode-java/config/checkstyle/checkstyle.xml Normal file
View file

@ -0,0 +1,171 @@
<?xml version="1.0"?>
<!DOCTYPE module PUBLIC
"-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
"https://checkstyle.org/dtds/configuration_1_3.dtd">
<!--
Checkstyle configuration that matches the Eclipse formatter
Checkstyle is very configurable. Be sure to read the documentation at
http://checkstyle.sourceforge.net (or in your downloaded distribution).
Most Checks are configurable, be sure to consult the documentation.
To completely disable a check, just comment it out or delete it from the file.
Finally, it is worth reading the documentation.
-->
<module name="Checker">
<!--
If you set the basedir property below, then all reported file
names will be relative to the specified directory. See
https://checkstyle.org/5.x/config.html#Checker
<property name="basedir" value="${basedir}"/>
-->
<property name="fileExtensions" value="java, properties, xml"/>
<module name="SuppressionFilter">
<property name="file" value="${config_loc}/suppressions.xml"/>
<property name="optional" value="false"/>
</module>
<!-- Excludes all 'module-info.java' files -->
<!-- See https://checkstyle.org/config_filefilters.html -->
<module name="BeforeExecutionExclusionFileFilter">
<property name="fileNamePattern" value="module\-info\.java$"/>
</module>
<!-- Checks that a package-info.java file exists for each package. -->
<!-- See http://checkstyle.sourceforge.net/config_javadoc.html#JavadocPackage -->
<!-- <module name="JavadocPackage"/> -->
<!-- Checks whether files end with a new line. -->
<!-- See http://checkstyle.sourceforge.net/config_misc.html#NewlineAtEndOfFile -->
<module name="NewlineAtEndOfFile"/>
<!-- Checks that property files contain the same keys. -->
<!-- See http://checkstyle.sourceforge.net/config_misc.html#Translation -->
<module name="Translation"/>
<!-- Checks for Size Violations. -->
<!-- See http://checkstyle.sourceforge.net/config_sizes.html -->
<module name="FileLength"/>
<!-- Checks for whitespace -->
<!-- See http://checkstyle.sourceforge.net/config_whitespace.html -->
<module name="FileTabCharacter"/>
<!-- Miscellaneous other checks. -->
<!-- See http://checkstyle.sourceforge.net/config_misc.html -->
<module name="RegexpSingleline">
<property name="format" value="\s+$"/>
<property name="minimum" value="0"/>
<property name="maximum" value="0"/>
<property name="message" value="Line has trailing spaces."/>
</module>
<!-- Checks for Headers -->
<!-- See http://checkstyle.sourceforge.net/config_header.html -->
<!-- <module name="Header"> -->
<!-- <property name="headerFile" value="${checkstyle.header.file}"/> -->
<!-- <property name="fileExtensions" value="java"/> -->
<!-- </module> -->
<module name="TreeWalker">
<!-- Checks for Javadoc comments. -->
<!-- See http://checkstyle.sourceforge.net/config_javadoc.html -->
<!-- <module name="JavadocMethod"/> -->
<!-- <module name="JavadocType"/> -->
<!-- <module name="JavadocVariable"/> -->
<!-- <module name="JavadocStyle"/> -->
<!-- <module name="MissingJavadocMethod"/> -->
<!-- Checks for Naming Conventions. -->
<!-- See http://checkstyle.sourceforge.net/config_naming.html -->
<module name="ConstantName"/>
<module name="LocalFinalVariableName"/>
<module name="LocalVariableName"/>
<module name="PackageName"/>
<module name="StaticVariableName"/>
<module name="TypeName"/>
<!-- Checks for imports -->
<!-- See http://checkstyle.sourceforge.net/config_import.html -->
<module name="AvoidStarImport"/>
<module name="IllegalImport"/> <!-- defaults to sun.* packages -->
<module name="RedundantImport"/>
<module name="UnusedImports">
<property name="processJavadoc" value="false"/>
</module>
<!-- Checks for Size Violations. -->
<!-- See http://checkstyle.sourceforge.net/config_sizes.html -->
<module name="MethodLength"/>
<module name="ParameterNumber"/>
<!-- Checks for whitespace -->
<!-- See http://checkstyle.sourceforge.net/config_whitespace.html -->
<module name="EmptyForIteratorPad"/>
<module name="GenericWhitespace"/>
<module name="MethodParamPad"/>
<module name="NoWhitespaceAfter"/>
<module name="NoWhitespaceBefore"/>
<module name="OperatorWrap"/>
<module name="ParenPad"/>
<module name="TypecastParenPad"/>
<module name="WhitespaceAfter"/>
<module name="WhitespaceAround"/>
<!-- Modifier Checks -->
<!-- See http://checkstyle.sourceforge.net/config_modifiers.html -->
<module name="ModifierOrder"/>
<module name="RedundantModifier"/>
<!-- Checks for blocks. You know, those {}'s -->
<!-- See http://checkstyle.sourceforge.net/config_blocks.html -->
<module name="AvoidNestedBlocks"/>
<module name="EmptyBlock"/>
<module name="LeftCurly"/>
<module name="NeedBraces"/>
<module name="RightCurly"/>
<!-- Checks for common coding problems -->
<!-- See http://checkstyle.sourceforge.net/config_coding.html -->
<module name="EmptyStatement"/>
<module name="EqualsHashCode"/>
<module name="HiddenField">
<property name="ignoreConstructorParameter" value="true"/>
</module>
<module name="IllegalInstantiation"/>
<module name="InnerAssignment"/>
<module name="MissingSwitchDefault"/>
<module name="MultipleVariableDeclarations"/>
<module name="SimplifyBooleanExpression"/>
<module name="SimplifyBooleanReturn"/>
<!-- Checks for class design -->
<!-- See http://checkstyle.sourceforge.net/config_design.html -->
<module name="DesignForExtension"/>
<module name="FinalClass"/>
<module name="HideUtilityClassConstructor"/>
<module name="InterfaceIsType"/>
<module name="VisibilityModifier">
<property name="allowPublicFinalFields" value="true"/>
</module>
<!-- Miscellaneous other checks. -->
<!-- See http://checkstyle.sourceforge.net/config_misc.html -->
<module name="ArrayTypeStyle"/>
<module name="FinalParameters"/>
<module name="TodoComment"/>
<module name="UpperEll"/>
</module>
</module>

8
asset-transfer-private-data/chaincode-java/config/checkstyle/suppressions.xml Normal file
View file

@ -0,0 +1,8 @@
<?xml version="1.0"?>
<!DOCTYPE suppressions PUBLIC
"-//Checkstyle//DTD SuppressionFilter Configuration 1.2//EN"
"https://checkstyle.org/dtds/suppressions_1_2.dtd">
<suppressions>
</suppressions>

BIN
asset-transfer-private-data/chaincode-java/gradle/wrapper/gradle-wrapper.jar vendored Normal file
View file

Binary file not shown.

5
asset-transfer-private-data/chaincode-java/gradle/wrapper/gradle-wrapper.properties vendored Normal file
View file

@ -0,0 +1,5 @@
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-6.5.1-bin.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

188
asset-transfer-private-data/chaincode-java/gradlew vendored Executable file
View file

@ -0,0 +1,188 @@
#!/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`="\"$arg\""
fi
i=$((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"
# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
cd "$(dirname "$0")"
fi
exec "$JAVACMD" "$@"

100
asset-transfer-private-data/chaincode-java/gradlew.bat vendored Normal file
View file

@ -0,0 +1,100 @@
@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 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

5
asset-transfer-private-data/chaincode-java/settings.gradle Normal file
View file

@ -0,0 +1,5 @@
/*
* SPDX-License-Identifier: Apache-2.0
*/
rootProject.name = 'private'

126
asset-transfer-private-data/chaincode-java/src/main/java/org/hyperledger/fabric/samples/privatedata/Asset.java Normal file
View file

@ -0,0 +1,126 @@
/*
* SPDX-License-Identifier: Apache-2.0
*/
package org.hyperledger.fabric.samples.privatedata;
import java.util.Objects;
import static java.nio.charset.StandardCharsets.UTF_8;
import org.hyperledger.fabric.contract.annotation.DataType;
import org.hyperledger.fabric.contract.annotation.Property;
import org.hyperledger.fabric.shim.ChaincodeException;
import org.json.JSONObject;
@DataType()
public final class Asset {
@Property()
private final String assetID;
@Property()
private final String objectType;
@Property()
private final String color;
@Property()
private final int size;
@Property()
private String owner;
public String getAssetID() {
return assetID;
}
public String getColor() {
return color;
}
public int getSize() {
return size;
}
public String getOwner() {
return owner;
}
public String getObjectType() {
return objectType;
}
public void setOwner(final String newowner) {
owner = newowner;
}
public Asset(final String type,
final String assetID, final String color,
final int size, final String owner) {
this.objectType = type;
this.assetID = assetID;
this.color = color;
this.size = size;
this.owner = owner;
}
public byte[] serialize() {
String jsonStr = new JSONObject(this).toString();
return jsonStr.getBytes(UTF_8);
}
public static Asset deserialize(final byte[] assetJSON) {
return deserialize(new String(assetJSON, UTF_8));
}
public static Asset deserialize(final String assetJSON) {
try {
JSONObject json = new JSONObject(assetJSON);
final String id = json.getString("assetID");
final String type = json.getString("objectType");
final String color = json.getString("color");
final String owner = json.getString("owner");
final int size = json.getInt("size");
return new Asset(type, id, color, size, owner);
} catch (Exception e) {
throw new ChaincodeException("Deserialize error: " + e.getMessage(), "DATA_ERROR");
}
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if ((obj == null) || (getClass() != obj.getClass())) {
return false;
}
Asset other = (Asset) obj;
return Objects.deepEquals(
new String[]{getAssetID(), getColor(), getOwner()},
new String[]{other.getAssetID(), other.getColor(), other.getOwner()})
&&
Objects.deepEquals(
new int[]{getSize()},
new int[]{other.getSize()});
}
@Override
public int hashCode() {
return Objects.hash(getObjectType(), getAssetID(), getColor(), getSize(), getOwner());
}
@Override
public String toString() {
return this.getClass().getSimpleName() + "@" + Integer.toHexString(hashCode())
+ " [assetID=" + assetID + ", type=" + objectType + ", color="
+ color + ", size=" + size + ", owner=" + owner + "]";
}
}

51
asset-transfer-private-data/chaincode-java/src/main/java/org/hyperledger/fabric/samples/privatedata/AssetPrivateDetails.java Normal file
View file

@ -0,0 +1,51 @@
package org.hyperledger.fabric.samples.privatedata;
import org.hyperledger.fabric.contract.annotation.DataType;
import org.hyperledger.fabric.contract.annotation.Property;
import org.hyperledger.fabric.shim.ChaincodeException;
import org.json.JSONObject;
import static java.nio.charset.StandardCharsets.UTF_8;
@DataType()
public final class AssetPrivateDetails {
@Property()
private final String assetID;
@Property()
private int appraisedValue;
public String getAssetID() {
return assetID;
}
public int getAppraisedValue() {
return appraisedValue;
}
public AssetPrivateDetails(final String assetID,
final int appraisedValue) {
this.assetID = assetID;
this.appraisedValue = appraisedValue;
}
public byte[] serialize() {
String jsonStr = new JSONObject(this).toString();
return jsonStr.getBytes(UTF_8);
}
public static AssetPrivateDetails deserialize(final byte[] assetJSON) {
try {
JSONObject json = new JSONObject(new String(assetJSON, UTF_8));
final String id = json.getString("assetID");
final int appraisedValue = json.getInt("appraisedValue");
return new AssetPrivateDetails(id, appraisedValue);
} catch (Exception e) {
throw new ChaincodeException("Deserialize error: " + e.getMessage(), "DATA_ERROR");
}
}
}

593
asset-transfer-private-data/chaincode-java/src/main/java/org/hyperledger/fabric/samples/privatedata/AssetTransfer.java Normal file
View file

@ -0,0 +1,593 @@
/*
* SPDX-License-Identifier: Apache-2.0
*/
package org.hyperledger.fabric.samples.privatedata;
import static java.nio.charset.StandardCharsets.UTF_8;
import org.hyperledger.fabric.contract.Context;
import org.hyperledger.fabric.contract.ContractInterface;
import org.hyperledger.fabric.contract.annotation.Contact;
import org.hyperledger.fabric.contract.annotation.Contract;
import org.hyperledger.fabric.contract.annotation.Default;
import org.hyperledger.fabric.contract.annotation.Info;
import org.hyperledger.fabric.contract.annotation.License;
import org.hyperledger.fabric.contract.annotation.Transaction;
import org.hyperledger.fabric.shim.ChaincodeException;
import org.hyperledger.fabric.shim.ChaincodeStub;
import org.hyperledger.fabric.shim.ledger.CompositeKey;
import org.hyperledger.fabric.shim.ledger.KeyValue;
import org.hyperledger.fabric.shim.ledger.QueryResultsIterator;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
/**
* Main Chaincode class. A ContractInterface gets converted to Chaincode internally.
* @see org.hyperledger.fabric.shim.Chaincode
*
* Each chaincode transaction function must take, Context as first parameter.
* Unless specified otherwise via annotation (@Contract or @Transaction), the contract name
* is the class name (without package)
* and the transaction name is the method name.
*
* To create fabric test-network
* cd fabric-samples/test-network
* ./network.sh up createChannel -ca -s couchdb
* To deploy this chaincode to test-network, use the collection config as described in
* See <a href="https://hyperledger-fabric.readthedocs.io/en/latest/private_data_tutorial.html</a>
* Change both -ccs sequence & -ccv version args for iterative deployment
* ./network.sh deployCC -ccn private -ccl java -ccep "OR('Org1MSP.peer','Org2MSP.peer')" -cccg ../asset-transfer-private-data/chaincode-go/collections_config.json -ccs 1 -ccv 1
*/
@Contract(
name = "private",
info = @Info(
title = "Asset Transfer Private Data",
description = "The hyperlegendary asset transfer private data",
version = "0.0.1-SNAPSHOT",
license = @License(
name = "Apache 2.0 License",
url = "http://www.apache.org/licenses/LICENSE-2.0.html"),
contact = @Contact(
email = "a.transfer@example.com",
name = "Private Transfer",
url = "https://hyperledger.example.com")))
@Default
public final class AssetTransfer implements ContractInterface {
static final String ASSET_COLLECTION_NAME = "assetCollection";
static final String AGREEMENT_KEYPREFIX = "transferAgreement";
private enum AssetTransferErrors {
INCOMPLETE_INPUT,
INVALID_ACCESS,
ASSET_NOT_FOUND,
ASSET_ALREADY_EXISTS
}
/**
* Retrieves the asset public details with the specified ID from the AssetCollection.
*
* @param ctx the transaction context
* @param assetID the ID of the asset
* @return the asset found on the ledger if there was one
*/
@Transaction(intent = Transaction.TYPE.EVALUATE)
public Asset ReadAsset(final Context ctx, final String assetID) {
ChaincodeStub stub = ctx.getStub();
System.out.printf("ReadAsset: collection %s, ID %s\n", ASSET_COLLECTION_NAME, assetID);
byte[] assetJSON = stub.getPrivateData(ASSET_COLLECTION_NAME, assetID);
if (assetJSON == null || assetJSON.length == 0) {
System.out.printf("Asset not found: ID %s\n", assetID);
return null;
}
Asset asset = Asset.deserialize(assetJSON);
return asset;
}
/**
* Retrieves the asset's AssetPrivateDetails details with the specified ID from the Collection.
*
* @param ctx the transaction context
* @param collection the org's collection containing asset private details
* @param assetID the ID of the asset
* @return the AssetPrivateDetails from the collection, if there was one
*/
@Transaction(intent = Transaction.TYPE.EVALUATE)
public AssetPrivateDetails ReadAssetPrivateDetails(final Context ctx, final String collection, final String assetID) {
ChaincodeStub stub = ctx.getStub();
System.out.printf("ReadAssetPrivateDetails: collection %s, ID %s\n", collection, assetID);
byte[] assetPrvJSON = stub.getPrivateData(collection, assetID);
if (assetPrvJSON == null || assetPrvJSON.length == 0) {
String errorMessage = String.format("AssetPrivateDetails %s does not exist in collection %s", assetID, collection);
System.out.println(errorMessage);
return null;
}
AssetPrivateDetails assetpd = AssetPrivateDetails.deserialize(assetPrvJSON);
return assetpd;
}
/**
* ReadTransferAgreement gets the buyer's identity from the transfer agreement from collection
*
* @param ctx the transaction context
* @param assetID the ID of the asset
* @return the AssetPrivateDetails from the collection, if there was one
*/
@Transaction(intent = Transaction.TYPE.EVALUATE)
public TransferAgreement ReadTransferAgreement(final Context ctx, final String assetID) {
ChaincodeStub stub = ctx.getStub();
CompositeKey aggKey = stub.createCompositeKey(AGREEMENT_KEYPREFIX, assetID);
System.out.printf("ReadTransferAgreement Get: collection %s, ID %s, Key %s\n", ASSET_COLLECTION_NAME, assetID, aggKey);
byte[] buyerIdentity = stub.getPrivateData(ASSET_COLLECTION_NAME, aggKey.toString());
if (buyerIdentity == null || buyerIdentity.length == 0) {
String errorMessage = String.format("BuyerIdentity for asset %s does not exist in TransferAgreement ", assetID);
System.out.println(errorMessage);
return null;
}
return new TransferAgreement(assetID, new String(buyerIdentity, UTF_8));
}
/**
* GetAssetByRange performs a range query based on the start and end keys provided. Range
* queries can be used to read data from private data collections, but can not be used in
* a transaction that also writes to private collection, since transaction may not get endorsed
* on some peers that do not have the collection.
*
* @param ctx the transaction context
* @param startKey for ID range of the asset
* @param endKey for ID range of the asset
* @return the asset found on the ledger if there was one
*/
@Transaction(intent = Transaction.TYPE.EVALUATE)
public Asset[] GetAssetByRange(final Context ctx, final String startKey, final String endKey) throws Exception {
ChaincodeStub stub = ctx.getStub();
System.out.printf("GetAssetByRange: start %s, end %s\n", startKey, endKey);
List<Asset> queryResults = new ArrayList<>();
// retrieve asset with keys between startKey (inclusive) and endKey(exclusive) in lexical order.
try (QueryResultsIterator<KeyValue> results = stub.getPrivateDataByRange(ASSET_COLLECTION_NAME, startKey, endKey)) {
for (KeyValue result : results) {
if (result.getStringValue() == null || result.getStringValue().length() == 0) {
System.err.printf("Invalid Asset json: %s\n", result.getStringValue());
continue;
}
Asset asset = Asset.deserialize(result.getStringValue());
queryResults.add(asset);
System.out.println("QueryResult: " + asset.toString());
}
}
return queryResults.toArray(new Asset[0]);
}
// =======Rich queries =========================================================================
// Two examples of rich queries are provided below (parameterized query and ad hoc query).
// Rich queries pass a query string to the state database.
// Rich queries are only supported by state database implementations
// that support rich query (e.g. CouchDB).
// The query string is in the syntax of the underlying state database.
// With rich queries there is no guarantee that the result set hasn't changed between
// endorsement time and commit time, aka 'phantom reads'.
// Therefore, rich queries should not be used in update transactions, unless the
// application handles the possibility of result set changes between endorsement and commit time.
// Rich queries can be used for point-in-time queries against a peer.
// ============================================================================================
/**
* QueryAssetByOwner queries for assets based on assetType, owner.
* This is an example of a parameterized query where the query logic is baked into the chaincode,
* and accepting a single query parameter (owner).
*
* @param ctx the transaction context
* @param assetType type to query for
* @param owner asset owner to query for
* @return the asset found on the ledger if there was one
*/
@Transaction(intent = Transaction.TYPE.EVALUATE)
public Asset[] QueryAssetByOwner(final Context ctx, final String assetType, final String owner) throws Exception {
String queryString = String.format("{\"selector\":{\"objectType\":\"%s\",\"owner\":\"%s\"}}", assetType, owner);
return getQueryResult(ctx, queryString);
}
/**
* QueryAssets uses a query string to perform a query for assets.
* Query string matching state database syntax is passed in and executed as is.
* Supports ad hoc queries that can be defined at runtime by the client.
*
* @param ctx the transaction context
* @param queryString query string matching state database syntax
* @return the asset found on the ledger if there was one
*/
@Transaction(intent = Transaction.TYPE.EVALUATE)
public Asset[] QueryAssets(final Context ctx, final String queryString) throws Exception {
return getQueryResult(ctx, queryString);
}
private Asset[] getQueryResult(final Context ctx, final String queryString) throws Exception {
ChaincodeStub stub = ctx.getStub();
System.out.printf("QueryAssets: %s\n", queryString);
List<Asset> queryResults = new ArrayList<Asset>();
// retrieve asset with keys between startKey (inclusive) and endKey(exclusive) in lexical order.
try (QueryResultsIterator<KeyValue> results = stub.getPrivateDataQueryResult(ASSET_COLLECTION_NAME, queryString)) {
for (KeyValue result : results) {
if (result.getStringValue() == null || result.getStringValue().length() == 0) {
System.err.printf("Invalid Asset json: %s\n", result.getStringValue());
continue;
}
Asset asset = Asset.deserialize(result.getStringValue());
queryResults.add(asset);
System.out.println("QueryResult: " + asset.toString());
}
}
return queryResults.toArray(new Asset[0]);
}
/**
* Creates a new asset on the ledger from asset properties passed in as transient map.
* Asset owner will be inferred from the ClientId via stub api
*
* @param ctx the transaction context
* Transient map with asset_properties key with asset json as value
* @return the created asset
*/
@Transaction(intent = Transaction.TYPE.SUBMIT)
public Asset CreateAsset(final Context ctx) {
ChaincodeStub stub = ctx.getStub();
Map<String, byte[]> transientMap = ctx.getStub().getTransient();
if (!transientMap.containsKey("asset_properties")) {
String errorMessage = String.format("CreateAsset call must specify asset_properties in Transient map input");
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
byte[] transientAssetJSON = transientMap.get("asset_properties");
final String assetID;
final String type;
final String color;
int appraisedValue = 0;
int size = 0;
try {
JSONObject json = new JSONObject(new String(transientAssetJSON, UTF_8));
Map<String, Object> tMap = json.toMap();
type = (String) tMap.get("objectType");
assetID = (String) tMap.get("assetID");
color = (String) tMap.get("color");
if (tMap.containsKey("size")) {
size = (Integer) tMap.get("size");
}
if (tMap.containsKey("appraisedValue")) {
appraisedValue = (Integer) tMap.get("appraisedValue");
}
} catch (Exception err) {
String errorMessage = String.format("TransientMap deserialized error: %s ", err);
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
//input validations
String errorMessage = null;
if (assetID.equals("")) {
errorMessage = String.format("Empty input in Transient map: assetID");
}
if (type.equals("")) {
errorMessage = String.format("Empty input in Transient map: objectType");
}
if (color.equals("")) {
errorMessage = String.format("Empty input in Transient map: color");
}
if (size <= 0) {
errorMessage = String.format("Empty input in Transient map: size");
}
if (appraisedValue <= 0) {
errorMessage = String.format("Empty input in Transient map: appraisedValue");
}
if (errorMessage != null) {
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
Asset asset = new Asset(type, assetID, color, size, "");
// Check if asset already exists
byte[] assetJSON = ctx.getStub().getPrivateData(ASSET_COLLECTION_NAME, assetID);
if (assetJSON != null && assetJSON.length > 0) {
errorMessage = String.format("Asset %s already exists", assetID);
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.ASSET_ALREADY_EXISTS.toString());
}
// Get ID of submitting client identity
String clientID = ctx.getClientIdentity().getId();
// Verify that the client is submitting request to peer in their organization
// This is to ensure that a client from another org doesn't attempt to read or
// write private data from this peer.
verifyClientOrgMatchesPeerOrg(ctx);
//Make submitting client the owner
asset.setOwner(clientID);
System.out.printf("CreateAsset Put: collection %s, ID %s\n", ASSET_COLLECTION_NAME, assetID);
System.out.printf("Put: collection %s, ID %s\n", ASSET_COLLECTION_NAME, new String(asset.serialize()));
stub.putPrivateData(ASSET_COLLECTION_NAME, assetID, asset.serialize());
// Get collection name for this organization.
String orgCollectionName = getCollectionName(ctx);
//Save AssetPrivateDetails to org collection
AssetPrivateDetails assetPriv = new AssetPrivateDetails(assetID, appraisedValue);
System.out.printf("Put AssetPrivateDetails: collection %s, ID %s\n", orgCollectionName, assetID);
stub.putPrivateData(orgCollectionName, assetID, assetPriv.serialize());
return asset;
}
/**
* AgreeToTransfer is used by the potential buyer of the asset to agree to the
* asset value. The agreed to appraisal value is stored in the buying orgs
* org specifc collection, while the the buyer client ID is stored in the asset collection
* using a composite key
* Uses transient map with key asset_value
*
* @param ctx the transaction context
*/
@Transaction(intent = Transaction.TYPE.SUBMIT)
public void AgreeToTransfer(final Context ctx) {
ChaincodeStub stub = ctx.getStub();
Map<String, byte[]> transientMap = ctx.getStub().getTransient();
if (!transientMap.containsKey("asset_value")) {
String errorMessage = String.format("AgreeToTransfer call must specify \"asset_value\" in Transient map input");
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
byte[] transientAssetJSON = transientMap.get("asset_value");
AssetPrivateDetails assetPriv;
String assetID;
try {
JSONObject json = new JSONObject(new String(transientAssetJSON, UTF_8));
assetID = json.getString("assetID");
final int appraisedValue = json.getInt("appraisedValue");
assetPriv = new AssetPrivateDetails(assetID, appraisedValue);
} catch (Exception err) {
String errorMessage = String.format("TransientMap deserialized error %s ", err);
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
if (assetID.equals("")) {
String errorMessage = String.format("Invalid input in Transient map: assetID");
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
if (assetPriv.getAppraisedValue() <= 0) { // appraisedValue field must be a positive integer
String errorMessage = String.format("Input must be positive integer: appraisedValue");
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
System.out.printf("AgreeToTransfer: verify asset %s exists\n", assetID);
Asset existing = ReadAsset(ctx, assetID);
if (existing == null) {
String errorMessage = String.format("Asset does not exist in the collection: ", assetID);
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
// Get collection name for this organization.
String orgCollectionName = getCollectionName(ctx);
verifyClientOrgMatchesPeerOrg(ctx);
//Save AssetPrivateDetails to org collection
System.out.printf("Put AssetPrivateDetails: collection %s, ID %s\n", orgCollectionName, assetID);
stub.putPrivateData(orgCollectionName, assetID, assetPriv.serialize());
String clientID = ctx.getClientIdentity().getId();
//Write the AgreeToTransfer key in assetCollection
CompositeKey aggKey = stub.createCompositeKey(AGREEMENT_KEYPREFIX, assetID);
System.out.printf("AgreeToTransfer Put: collection %s, ID %s, Key %s\n", ASSET_COLLECTION_NAME, assetID, aggKey);
stub.putPrivateData(ASSET_COLLECTION_NAME, aggKey.toString(), clientID);
}
/**
* TransferAsset transfers the asset to the new owner by setting a new owner ID based on
* AgreeToTransfer data
*
* @param ctx the transaction context
* @return none
*/
@Transaction(intent = Transaction.TYPE.SUBMIT)
public void TransferAsset(final Context ctx) {
ChaincodeStub stub = ctx.getStub();
Map<String, byte[]> transientMap = ctx.getStub().getTransient();
if (!transientMap.containsKey("asset_owner")) {
String errorMessage = "TransferAsset call must specify \"asset_owner\" in Transient map input";
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
byte[] transientAssetJSON = transientMap.get("asset_owner");
final String assetID;
final String buyerMSP;
try {
JSONObject json = new JSONObject(new String(transientAssetJSON, UTF_8));
assetID = json.getString("assetID");
buyerMSP = json.getString("buyerMSP");
} catch (Exception err) {
String errorMessage = String.format("TransientMap deserialized error %s ", err);
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
if (assetID.equals("")) {
String errorMessage = String.format("Invalid input in Transient map: " + "assetID");
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
if (buyerMSP.equals("")) {
String errorMessage = String.format("Invalid input in Transient map: " + "buyerMSP");
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
System.out.printf("TransferAsset: verify asset %s exists\n", assetID);
byte[] assetJSON = stub.getPrivateData(ASSET_COLLECTION_NAME, assetID);
if (assetJSON == null || assetJSON.length == 0) {
String errorMessage = String.format("Asset %s does not exist in the collection", assetID);
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
verifyClientOrgMatchesPeerOrg(ctx);
Asset thisAsset = Asset.deserialize(assetJSON);
// Verify transfer details and transfer owner
verifyAgreement(ctx, assetID, thisAsset.getOwner(), buyerMSP);
TransferAgreement transferAgreement = ReadTransferAgreement(ctx, assetID);
if (transferAgreement == null) {
String errorMessage = String.format("TransferAgreement does not exist for asset: %s", assetID);
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
// Transfer asset in private data collection to new owner
String newOwner = transferAgreement.getBuyerID();
thisAsset.setOwner(newOwner);
//Save updated Asset to collection
System.out.printf("Transfer Asset: collection %s, ID %s to owner %s\n", ASSET_COLLECTION_NAME, assetID, newOwner);
stub.putPrivateData(ASSET_COLLECTION_NAME, assetID, thisAsset.serialize());
// delete the key from owners collection
String ownersCollectionName = getCollectionName(ctx);
stub.delPrivateData(ownersCollectionName, assetID);
//Delete the transfer agreement from the asset collection
CompositeKey aggKey = stub.createCompositeKey(AGREEMENT_KEYPREFIX, assetID);
System.out.printf("AgreeToTransfer deleteKey: collection %s, ID %s, Key %s\n", ASSET_COLLECTION_NAME, assetID, aggKey);
stub.delPrivateData(ASSET_COLLECTION_NAME, aggKey.toString());
}
/**
* Deletes a asset & related details from the ledger.
* Input in transient map: asset_delete
*
* @param ctx the transaction context
*/
@Transaction(intent = Transaction.TYPE.SUBMIT)
public void DeleteAsset(final Context ctx) {
ChaincodeStub stub = ctx.getStub();
Map<String, byte[]> transientMap = ctx.getStub().getTransient();
if (!transientMap.containsKey("asset_delete")) {
String errorMessage = String.format("DeleteAsset call must specify 'asset_delete' in Transient map input");
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
byte[] transientAssetJSON = transientMap.get("asset_delete");
final String assetID;
try {
JSONObject json = new JSONObject(new String(transientAssetJSON, UTF_8));
assetID = json.getString("assetID");
} catch (Exception err) {
String errorMessage = String.format("TransientMap deserialized error: %s ", err);
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INCOMPLETE_INPUT.toString());
}
System.out.printf("DeleteAsset: verify asset %s exists\n", assetID);
byte[] assetJSON = stub.getPrivateData(ASSET_COLLECTION_NAME, assetID);
if (assetJSON == null || assetJSON.length == 0) {
String errorMessage = String.format("Asset %s does not exist", assetID);
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.ASSET_NOT_FOUND.toString());
}
String ownersCollectionName = getCollectionName(ctx);
byte[] apdJSON = stub.getPrivateData(ownersCollectionName, assetID);
if (apdJSON == null || apdJSON.length == 0) {
String errorMessage = String.format("Failed to read asset from owner's Collection %s", ownersCollectionName);
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.ASSET_NOT_FOUND.toString());
}
verifyClientOrgMatchesPeerOrg(ctx);
// delete the key from asset collection
System.out.printf("DeleteAsset: collection %s, ID %s\n", ASSET_COLLECTION_NAME, assetID);
stub.delPrivateData(ASSET_COLLECTION_NAME, assetID);
// Finally, delete private details of asset
stub.delPrivateData(ownersCollectionName, assetID);
}
// Used by TransferAsset to verify that the transfer is being initiated by the owner and that
// the buyer has agreed to the same appraisal value as the owner
private void verifyAgreement(final Context ctx, final String assetID, final String owner, final String buyerMSP) {
String clienID = ctx.getClientIdentity().getId();
// Check 1: verify that the transfer is being initiatied by the owner
if (!clienID.equals(owner)) {
throw new ChaincodeException("Submitting client identity does not own the asset", AssetTransferErrors.INVALID_ACCESS.toString());
}
// Check 2: verify that the buyer has agreed to the appraised value
String collectionOwner = getCollectionName(ctx); // get owner collection from caller identity
String collectionBuyer = buyerMSP + "PrivateCollection";
// Get hash of owners agreed to value
byte[] ownerAppraisedValueHash = ctx.getStub().getPrivateDataHash(collectionOwner, assetID);
if (ownerAppraisedValueHash == null) {
throw new ChaincodeException(String.format("Hash of appraised value for %s does not exist in collection %s", assetID, collectionOwner));
}
// Get hash of buyers agreed to value
byte[] buyerAppraisedValueHash = ctx.getStub().getPrivateDataHash(collectionBuyer, assetID);
if (buyerAppraisedValueHash == null) {
throw new ChaincodeException(String.format("Hash of appraised value for %s does not exist in collection %s. AgreeToTransfer must be called by the buyer first.", assetID, collectionBuyer));
}
// Verify that the two hashes match
if (!Arrays.equals(ownerAppraisedValueHash, buyerAppraisedValueHash)) {
throw new ChaincodeException(String.format("Hash for appraised value for owner %x does not match value for seller %x", ownerAppraisedValueHash, buyerAppraisedValueHash));
}
}
private void verifyClientOrgMatchesPeerOrg(final Context ctx) {
String clientMSPID = ctx.getClientIdentity().getMSPID();
String peerMSPID = ctx.getStub().getMspId();
if (!peerMSPID.equals(clientMSPID)) {
String errorMessage = String.format("Client from org %s is not authorized to read or write private data from an org %s peer", clientMSPID, peerMSPID);
System.err.println(errorMessage);
throw new ChaincodeException(errorMessage, AssetTransferErrors.INVALID_ACCESS.toString());
}
}
private String getCollectionName(final Context ctx) {
// Get the MSP ID of submitting client identity
String clientMSPID = ctx.getClientIdentity().getMSPID();
// Create the collection name
return clientMSPID + "PrivateCollection";
}
}

51
asset-transfer-private-data/chaincode-java/src/main/java/org/hyperledger/fabric/samples/privatedata/TransferAgreement.java Normal file
View file

@ -0,0 +1,51 @@
package org.hyperledger.fabric.samples.privatedata;
import org.hyperledger.fabric.contract.annotation.DataType;
import org.hyperledger.fabric.contract.annotation.Property;
import org.hyperledger.fabric.shim.ChaincodeException;
import org.json.JSONObject;
import static java.nio.charset.StandardCharsets.UTF_8;
@DataType()
public final class TransferAgreement {
@Property()
private final String assetID;
@Property()
private String buyerID;
public String getAssetID() {
return assetID;
}
public String getBuyerID() {
return buyerID;
}
public TransferAgreement(final String assetID,
final String buyer) {
this.assetID = assetID;
this.buyerID = buyer;
}
public byte[] serialize() {
String jsonStr = new JSONObject(this).toString();
return jsonStr.getBytes(UTF_8);
}
public static TransferAgreement deserialize(final byte[] assetJSON) {
try {
JSONObject json = new JSONObject(new String(assetJSON, UTF_8));
final String id = json.getString("assetID");
final String buyerID = json.getString("buyerID");
return new TransferAgreement(id, buyerID);
} catch (Exception e) {
throw new ChaincodeException("Deserialize error: " + e.getMessage(), "DATA_ERROR");
}
}
}

170
asset-transfer-private-data/chaincode-java/src/test/java/org/hyperledger/fabric/samples/privatedata/AssetTransferTest.java Normal file
View file

@ -0,0 +1,170 @@
/*
* SPDX-License-Identifier: Apache-2.0
*/
package org.hyperledger.fabric.samples.privatedata;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.ThrowableAssert.catchThrowable;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.hyperledger.fabric.samples.privatedata.AssetTransfer.AGREEMENT_KEYPREFIX;
import static org.hyperledger.fabric.samples.privatedata.AssetTransfer.ASSET_COLLECTION_NAME;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyZeroInteractions;
import static org.mockito.Mockito.when;
import java.io.IOException;
import java.security.cert.CertificateException;
import java.util.HashMap;
import java.util.Map;
import org.hyperledger.fabric.contract.ClientIdentity;
import org.hyperledger.fabric.contract.Context;
import org.hyperledger.fabric.shim.ChaincodeException;
import org.hyperledger.fabric.shim.ChaincodeStub;
import org.hyperledger.fabric.shim.ledger.CompositeKey;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;
public final class AssetTransferTest {
@Nested
class InvokeWriteTransaction {
@Test
public void createAssetWhenAssetExists() {
AssetTransfer contract = new AssetTransfer();
Context ctx = mock(Context.class);
ChaincodeStub stub = mock(ChaincodeStub.class);
when(ctx.getStub()).thenReturn(stub);
Map<String, byte[]> m = new HashMap<String, byte[]>();
m.put("asset_properties", dataAsset1Bytes);
when(ctx.getStub().getTransient()).thenReturn(m);
when(stub.getPrivateData(ASSET_COLLECTION_NAME, testAsset1ID))
.thenReturn(dataAsset1Bytes);
Throwable thrown = catchThrowable(() -> {
contract.CreateAsset(ctx);
});
assertThat(thrown).isInstanceOf(ChaincodeException.class).hasNoCause()
.hasMessage("Asset asset1 already exists");
assertThat(((ChaincodeException) thrown).getPayload()).isEqualTo("ASSET_ALREADY_EXISTS".getBytes());
}
@Test
public void createAssetWhenNewAssetIsCreated() throws CertificateException, IOException {
AssetTransfer contract = new AssetTransfer();
Context ctx = mock(Context.class);
ChaincodeStub stub = mock(ChaincodeStub.class);
when(ctx.getStub()).thenReturn(stub);
when(stub.getMspId()).thenReturn(testOrgOneMSP);
ClientIdentity ci = mock(ClientIdentity.class);
when(ci.getId()).thenReturn(testOrg1Client);
when(ci.getMSPID()).thenReturn(testOrgOneMSP);
when(ctx.getClientIdentity()).thenReturn(ci);
Map<String, byte[]> m = new HashMap<String, byte[]>();
m.put("asset_properties", dataAsset1Bytes);
when(ctx.getStub().getTransient()).thenReturn(m);
when(stub.getPrivateData(ASSET_COLLECTION_NAME, testAsset1ID))
.thenReturn(new byte[0]);
Asset created = contract.CreateAsset(ctx);
assertThat(created).isEqualTo(testAsset1);
verify(stub).putPrivateData(ASSET_COLLECTION_NAME, testAsset1ID, created.serialize());
}
@Test
public void transferAssetWhenExistingAssetIsTransferred() throws CertificateException, IOException {
AssetTransfer contract = new AssetTransfer();
Context ctx = mock(Context.class);
ChaincodeStub stub = mock(ChaincodeStub.class);
when(ctx.getStub()).thenReturn(stub);
when(stub.getMspId()).thenReturn(testOrgOneMSP);
ClientIdentity ci = mock(ClientIdentity.class);
when(ci.getId()).thenReturn(testOrg1Client);
when(ctx.getClientIdentity()).thenReturn(ci);
when(ci.getMSPID()).thenReturn(testOrgOneMSP);
final String recipientOrgMsp = "TestOrg2";
final String buyerIdentity = "TestOrg2User";
Map<String, byte[]> m = new HashMap<String, byte[]>();
m.put("asset_owner", ("{ \"buyerMSP\": \"" + recipientOrgMsp + "\", \"assetID\": \"" + testAsset1ID + "\" }").getBytes());
when(ctx.getStub().getTransient()).thenReturn(m);
when(stub.getPrivateDataHash(anyString(), anyString())).thenReturn("TestHashValue".getBytes());
when(stub.getPrivateData(ASSET_COLLECTION_NAME, testAsset1ID))
.thenReturn(dataAsset1Bytes);
CompositeKey ck = mock(CompositeKey.class);
when(ck.toString()).thenReturn(AGREEMENT_KEYPREFIX + testAsset1ID);
when(stub.createCompositeKey(AGREEMENT_KEYPREFIX, testAsset1ID)).thenReturn(ck);
when(stub.getPrivateData(ASSET_COLLECTION_NAME, AGREEMENT_KEYPREFIX + testAsset1ID)).thenReturn(buyerIdentity.getBytes(UTF_8));
contract.TransferAsset(ctx);
Asset exptectedAfterTransfer = Asset.deserialize("{ \"objectType\": \"testasset\", \"assetID\": \"asset1\", \"color\": \"blue\", \"size\": 5, \"owner\": \"" + buyerIdentity + "\", \"appraisedValue\": 300 }");
verify(stub).putPrivateData(ASSET_COLLECTION_NAME, testAsset1ID, exptectedAfterTransfer.serialize());
String collectionOwner = testOrgOneMSP + "PrivateCollection";
verify(stub).delPrivateData(collectionOwner, testAsset1ID);
verify(stub).delPrivateData(ASSET_COLLECTION_NAME, AGREEMENT_KEYPREFIX + testAsset1ID);
}
}
@Nested
class QueryReadAssetTransaction {
@Test
public void whenAssetExists() {
AssetTransfer contract = new AssetTransfer();
Context ctx = mock(Context.class);
ChaincodeStub stub = mock(ChaincodeStub.class);
when(ctx.getStub()).thenReturn(stub);
when(stub.getPrivateData(ASSET_COLLECTION_NAME, testAsset1ID))
.thenReturn(dataAsset1Bytes);
Asset asset = contract.ReadAsset(ctx, testAsset1ID);
assertThat(asset).isEqualTo(testAsset1);
}
@Test
public void whenAssetDoesNotExist() {
AssetTransfer contract = new AssetTransfer();
Context ctx = mock(Context.class);
ChaincodeStub stub = mock(ChaincodeStub.class);
when(ctx.getStub()).thenReturn(stub);
when(stub.getStringState(testAsset1ID)).thenReturn(null);
Asset asset = contract.ReadAsset(ctx, testAsset1ID);
assertThat(asset).isNull();
}
@Test
public void invokeUnknownTransaction() {
AssetTransfer contract = new AssetTransfer();
Context ctx = mock(Context.class);
Throwable thrown = catchThrowable(() -> {
contract.unknownTransaction(ctx);
});
assertThat(thrown).isInstanceOf(ChaincodeException.class).hasNoCause()
.hasMessage("Undefined contract method called");
assertThat(((ChaincodeException) thrown).getPayload()).isEqualTo(null);
verifyZeroInteractions(ctx);
}
}
private static String testOrgOneMSP = "TestOrg1";
private static String testOrg1Client = "testOrg1User";
private static String testAsset1ID = "asset1";
private static Asset testAsset1 = new Asset("testasset", "asset1", "blue", 5, testOrg1Client);
private static byte[] dataAsset1Bytes = "{ \"objectType\": \"testasset\", \"assetID\": \"asset1\", \"color\": \"blue\", \"size\": 5, \"owner\": \"testOrg1User\", \"appraisedValue\": 300 }".getBytes();
}

1
asset-transfer-private-data/chaincode-java/src/test/resources/mockito-extensions/org.mockito.plugins.MockMaker Normal file
View file

@ -0,0 +1 @@
mock-maker-inline