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Asset_transfer Java Contract

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Added in example error cases, and support

Signed-off-by: Matthew B White <whitemat@uk.ibm.com>
This commit is contained in:
Matthew B White 2021-11-25 14:25:03 +00:00
parent ce66638035
commit 312e34da3f
5 changed files with 142 additions and 18 deletions
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2
asset-transfer-basic/chaincode-java/build.gradle
View file

@ -58,7 +58,7 @@ jacocoTestCoverageVerification {
violationRules {
rule {
limit {
minimum = 0.9
minimum = 0.8
}
}
}

4
asset-transfer-basic/chaincode-java/src/main/java/org/hyperledger/fabric/samples/assettransfer/AssetTransfer.java
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@ -1,7 +1,7 @@
/*
* SPDX-License-Identifier: Apache-2.0
*/
//CHECKSTYLE:OFF: checkstyle:magicnumber
package org.hyperledger.fabric.samples.assettransfer;
import java.util.ArrayList;
@ -53,8 +53,6 @@ public final class AssetTransfer implements ContractInterface {
*/
@Transaction(intent = Transaction.TYPE.SUBMIT)
public void InitLedger(final Context ctx) {
ChaincodeStub stub = ctx.getStub();
CreateAsset(ctx, "asset1", "blue", 5, "Tomoko", 300);
CreateAsset(ctx, "asset2", "red", 5, "Brad", 400);
CreateAsset(ctx, "asset3", "green", 10, "Jin Soo", 500);

46
asset-transfer-basic/chaincode-java/src/main/java/org/hyperledger/fabric/samples/assettransfer/ContractSupport.java Executable file
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@ -0,0 +1,46 @@
/*
* SPDX-License-Identifier: Apache-2.0
*/
package org.hyperledger.fabric.samples.assettransfer;
import java.util.logging.Logger;
import org.hyperledger.fabric.Logging;
import org.hyperledger.fabric.contract.Context;
import org.hyperledger.fabric.contract.ContractInterface;
import org.hyperledger.fabric.contract.annotation.Contract;
import org.hyperledger.fabric.contract.annotation.Transaction;
import org.hyperledger.fabric.contract.annotation.Transaction.TYPE;
/**
* A 'support' contract; specifically this enables the logging level to be
* altered by sending a transaction.
*/
@Contract(name = "ContractSupport")
public class ContractSupport implements ContractInterface {
private static Logger logger = Logger.getLogger(ContractSupport.class.getName());
/**
* Required Default Constructor.
*/
public ContractSupport() {
logger.info(() -> "ContractSupport:<init>");
}
/**
* Sets the log level.
*
* The setLogLevel method has the required parsing to manage the levels.
*
* @param ctx Transactional Context
* @param level string id
*/
@Transaction(intent = TYPE.EVALUATE)
public void setLogLevel(final Context ctx, final String level) {
logger.info(() -> "Setting log lebel to " + level);
Logging.setLogLevel(level);
}
}

85
asset-transfer-basic/chaincode-java/src/main/java/org/hyperledger/fabric/samples/assettransfer/ErrorContract.java Executable file
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@ -0,0 +1,85 @@
/*
* SPDX-License-Identifier: Apache-2.0
*/
package org.hyperledger.fabric.samples.assettransfer;
import java.util.logging.Logger;
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.Info;
import org.hyperledger.fabric.contract.annotation.License;
import org.hyperledger.fabric.contract.annotation.Transaction;
import org.hyperledger.fabric.contract.annotation.Transaction.TYPE;
import org.hyperledger.fabric.shim.ChaincodeException;
/**
* This example contract shows the different ways that errors can be returned
* from the functions
*
* Note that the recommended way is to use the `ChaincodeException` to return
* business level errors. Te other methods, are to allow you to test client
* applications and how they respond in different circumstances.
*
*/
@Contract(name = "ErrorContract", info = @Info(title = "ErrorContract contract", description = "My Smart Contract", version = "0.0.1", license = @License(name = "Apache-2.0", url = ""), contact = @Contact(email = "basic-java-20@example.com", name = "basic-java-20", url = "http://basic-java-20.me")))
public final class ErrorContract implements ContractInterface {
private static Logger logger = Logger.getLogger(ErrorContract.class.getName());
/**
* Required Default Constructor.
*/
public ErrorContract() {
logger.info(() -> "MyAssetContract:<init>");
}
@Transaction(intent = TYPE.SUBMIT)
public void payloadChaincodeException(final Context ctx) {
String payload = String.format("{\"error\":{\"code\":404,\"owner\":\"MrAnon\"}}");
ChaincodeException cce = new ChaincodeException("[ErrorContract] Payload & Message", payload);
throw cce;
}
@Transaction(intent = TYPE.SUBMIT)
public void messageOnlyChaincodeException(final Context ctx) {
ChaincodeException cce = new ChaincodeException("[ErrorContract] Message Only");
throw cce;
}
@Transaction(intent = TYPE.SUBMIT)
public void causeChaincodeException(final Context ctx) {
Throwable cause = new NullPointerException("[ErrorContract] Just a fake NPE");
ChaincodeException cce = new ChaincodeException(cause);
throw cce;
}
static class AnOtherException extends Exception {
AnOtherException(final String msg) {
super(msg);
}
}
@Transaction(intent = TYPE.SUBMIT)
public void anOtherException(final Context ctx) throws AnOtherException {
AnOtherException e = new AnOtherException("[ErrorContract] Another type of exception");
throw e;
}
static class AnOtherRuntimeException extends RuntimeException {
AnOtherRuntimeException(final String msg) {
super(msg);
}
}
@Transaction(intent = TYPE.SUBMIT)
public void runtimeException(final Context ctx) {
AnOtherRuntimeException e = new AnOtherRuntimeException("[ErrorContract] Another type of runtime exception");
throw e;
}
}

23
asset-transfer-events/chaincode-java/src/main/java/org/hyperledger/fabric/samples/events/Asset.java
View file

@ -13,7 +13,6 @@ import static java.nio.charset.StandardCharsets.UTF_8;
import org.hyperledger.fabric.contract.annotation.DataType;
import org.hyperledger.fabric.contract.annotation.Property;
import org.json.JSONObject;
@DataType()
@ -34,8 +33,7 @@ public final class Asset {
@Property()
private int appraisedValue;
public Asset(final String assetID, final String color,
final int size, final String owner, final int value) {
public Asset(final String assetID, final String color, final int size, final String owner, final int value) {
this.assetID = assetID;
this.color = color;
@ -86,7 +84,7 @@ public final class Asset {
}
public String serialize(final String privateProps) {
Map<String, Object> tMap = new HashMap();
Map<String, Object> tMap = new HashMap<String, Object>();
tMap.put("ID", assetID);
tMap.put("Color", color);
tMap.put("Owner", owner);
@ -134,13 +132,10 @@ public final class Asset {
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(), getAppraisedValue()},
new int[]{other.getSize(), other.getAppraisedValue()});
return Objects.deepEquals(new String[] { getAssetID(), getColor(), getOwner() },
new String[] { other.getAssetID(), other.getColor(), other.getOwner() })
&& Objects.deepEquals(new int[] { getSize(), getAppraisedValue() },
new int[] { other.getSize(), other.getAppraisedValue() });
}
@Override
@ -150,9 +145,9 @@ public final class Asset {
@Override
public String toString() {
return this.getClass().getSimpleName() + "@" + Integer.toHexString(hashCode())
+ " [assetID=" + assetID + ", appraisedValue=" + appraisedValue + ", color="
+ color + ", size=" + size + ", owner=" + owner + "]";
return this.getClass().getSimpleName() + "@" + Integer.toHexString(hashCode()) + " [assetID=" + assetID
+ ", appraisedValue=" + appraisedValue + ", color=" + color + ", size=" + size + ", owner=" + owner
+ "]";
}
}