cn.hyperchain.sdk.common.utils.InvokeDirectlyParams Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of litesdk Show documentation
Show all versions of litesdk Show documentation
A Java client tool for Hyperchain
package cn.hyperchain.sdk.common.utils;
import com.google.gson.Gson;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Collection;
import java.util.Map;
/**
* this class is used to build param for directly invoke hvm contract.
*
* @author Lam
* @ClassName InvokeDirectParams
* @date 2019/12/19
*/
public class InvokeDirectlyParams {
private String params;
public String getParams() {
return params;
}
public void setParams(String params) {
this.params = params;
}
public static class ParamBuilder {
public static final String MAGIC = "fefffbce";
private ByteArrayOutputStream payload;
private Gson gson = new Gson();
private InvokeDirectlyParams invokeDirectlyParams;
/**
* create params instance.
*
* @param methodName name of method you want to invoke
*/
public ParamBuilder(String methodName) {
try {
invokeDirectlyParams = new InvokeDirectlyParams();
payload = new ByteArrayOutputStream();
payload.write(get2Length(methodName.getBytes().length));
payload.write(methodName.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* add Integer argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addInteger(Integer arg) {
String clazzName = Integer.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add int argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addint(int arg) {
String clazzName = int.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add Short argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addShort(Short arg) {
String clazzName = Short.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add short argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addshort(short arg) {
String clazzName = short.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add Long argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addLong(Long arg) {
String clazzName = Long.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add long argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addlong(long arg) {
String clazzName = long.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add Byte argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addByte(Byte arg) {
String clazzName = Byte.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add byte argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addbyte(byte arg) {
String clazzName = byte.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add Float argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addFloat(Float arg) {
String clazzName = Float.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add float argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addfloat(float arg) {
String clazzName = float.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add Double argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addDouble(Double arg) {
String clazzName = Double.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add double argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder adddouble(double arg) {
String clazzName = double.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add Character argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addCharacter(Character arg) {
String clazzName = Character.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add char argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addchar(char arg) {
String clazzName = char.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add Boolean argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addBoolean(Boolean arg) {
String clazzName = Boolean.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add boolean argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addboolean(boolean arg) {
String clazzName = boolean.class.getName();
String param = String.valueOf(arg);
writePayload(clazzName, param);
return this;
}
/**
* add String argument.
*
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addString(String arg) {
String clazzName = String.class.getName();
String param = arg;
writePayload(clazzName, param);
return this;
}
/**
* add Object argument.
*
* @param clazz class of obj
* @param obj the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addObject(Class clazz, Object obj) {
if (obj.getClass() != clazz) {
throw new RuntimeException("class name not equal with obj's type");
}
if (String.class == clazz) {
return addString((String) obj);
}
String clazzName = clazz.getName();
String param = gson.toJson(obj);
writePayload(clazzName, param);
return this;
}
/**
* this method if for add generic object.
*
* @param classes index 0 for collection
* @param obj the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addParamizedObject(Class[] classes, Object obj) {
if (classes.length <= 1) {
throw new RuntimeException("can not detect generic type");
} else if (!(Map.class.isAssignableFrom(classes[0]) || Collection.class.isAssignableFrom(classes[0]))) {
throw new RuntimeException(classes[0].getName() + " does not implements Collection or Map interface, we can only accpect class which is subclass of interface Map or Collection!");
}
StringBuilder paramizedTypeSB = new StringBuilder();
int paramNum = 1;
if (Map.class.isAssignableFrom(classes[0])) {
paramNum += 2;
} else {
paramNum += 1;
}
paramizedTypeSB.append(classes[0].getName() + "<");
for (int i = 1; i < paramNum; i++) {
paramizedTypeSB.append(classes[i].getName());
if (i < paramNum - 1) {
paramizedTypeSB.append(", ");
}
}
paramizedTypeSB.append(">");
String paramizedTypeName = paramizedTypeSB.toString();
writePayload(paramizedTypeName, gson.toJson(obj));
return this;
}
/**
* build param instance.
*
* @return {@link ParamBuilder}
*/
public InvokeDirectlyParams build() {
invokeDirectlyParams.setParams(MAGIC + ByteUtil.toHex(payload.toByteArray()));
return invokeDirectlyParams;
}
private void writePayload(String clazzName, String param) {
try {
payload.write(get2Length(clazzName.getBytes().length));
payload.write(get4Length(param.getBytes().length));
payload.write(clazzName.getBytes());
payload.write(param.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
}
private byte[] get2Length(int length) {
return ByteBuffer.allocate(2).putShort((short) length).array();
}
private byte[] get4Length(int length) {
return ByteBuffer.allocate(4).putInt(length).array();
}
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy