cn.hyperchain.sdk.common.utils.InvokeDirectlyParams Maven / Gradle / Ivy
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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;
/**
* 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 {
private 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.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 arg
* @param arg the argument you want to pass to contract method invoke
* @return {@link ParamBuilder}
*/
public ParamBuilder addObject(Class clazz, Object arg) {
assert (arg.getClass() == clazz);
String clazzName = clazz.getName();
String param = gson.toJson(arg);
writePayload(clazzName, param);
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();
}
}
}
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