Merge pull request #10301 from saleco/master

BAEL-4071 - Get advised method info in Spring AOP
This commit is contained in:
bfontana 2020-12-29 17:16:41 -03:00 committed by GitHub
commit 5aec1d4055
6 changed files with 180 additions and 0 deletions

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package com.baeldung.method.info;
public class Account {
private String accountNumber;
private double balance;
public String getAccountNumber() {
return accountNumber;
}
public void setAccountNumber(String accountNumber) {
this.accountNumber = accountNumber;
}
public double getBalance() {
return balance;
}
public void setBalance(double balance) {
this.balance = balance;
}
@Override
public String toString() {
return "Account{" + "accountNumber='" + accountNumber + '\'' + ", balance=" + balance + '}';
}
}

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package com.baeldung.method.info;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface AccountOperation {
String operation();
}

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package com.baeldung.method.info;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.Arrays;
@Aspect
@Component
public class BankAccountAspect {
@Before(value = "@annotation(com.baeldung.method.info.AccountOperation)")
public void getAccountOperationInfo(JoinPoint joinPoint) {
// Method Information
MethodSignature signature = (MethodSignature) joinPoint.getSignature();
System.out.println("full method description: " + signature.getMethod());
System.out.println("method name: " + signature.getMethod().getName());
System.out.println("declaring type: " + signature.getDeclaringType());
// Method args
System.out.println("Method args names:");
Arrays.stream(signature.getParameterNames())
.forEach(s -> System.out.println("arg name: " + s));
System.out.println("Method args types:");
Arrays.stream(signature.getParameterTypes())
.forEach(s -> System.out.println("arg type: " + s));
System.out.println("Method args values:");
Arrays.stream(joinPoint.getArgs())
.forEach(o -> System.out.println("arg value: " + o.toString()));
// Additional Information
System.out.println("returning type: " + signature.getReturnType());
System.out.println("method modifier: " + Modifier.toString(signature.getModifiers()));
Arrays.stream(signature.getExceptionTypes())
.forEach(aClass -> System.out.println("exception type: " + aClass));
// Method annotation
Method method = signature.getMethod();
AccountOperation accountOperation = method.getAnnotation(AccountOperation.class);
System.out.println("Account operation annotation: " + accountOperation);
System.out.println("Account operation value: " + accountOperation.operation());
}
}

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package com.baeldung.method.info;
import org.apache.commons.lang3.RandomUtils;
import org.springframework.stereotype.Component;
@Component
public class BankAccountService {
@AccountOperation(operation = "deposit")
public void deposit(Account account, Double amount) {
account.setBalance(account.getBalance() + amount);
}
@AccountOperation(operation = "withdraw")
public void withdraw(Account account, Double amount) throws WithdrawLimitException {
if (amount > 500.0) {
throw new WithdrawLimitException("Withdraw limit exceeded.");
}
account.setBalance(account.getBalance() - amount);
}
public double getBalance() {
return RandomUtils.nextDouble();
}
}

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package com.baeldung.method.info;
public class WithdrawLimitException extends RuntimeException {
public WithdrawLimitException(String message) {
super(message);
}
}

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package com.baeldung.method.info;
import org.assertj.core.api.Assertions;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import static org.junit.jupiter.api.Assertions.assertTrue;
@SpringBootTest
class BankAccountServiceIntegrationTest {
private Account account;
@BeforeEach
public void setup() {
account = new Account();
account.setAccountNumber("12345");
account.setBalance(2000.0);
}
@Autowired
BankAccountService bankAccountService;
@Test
void withdraw() {
bankAccountService.withdraw(account, 500.0);
assertTrue(account.getBalance() == 1500.0);
}
@Test
void withdrawWhenLimitReached() {
Assertions.assertThatExceptionOfType(WithdrawLimitException.class)
.isThrownBy(() -> bankAccountService.withdraw(account, 600.0));
assertTrue(account.getBalance() == 2000.0);
}
@Test
void deposit() {
bankAccountService.deposit(account, 500.0);
assertTrue(account.getBalance() == 2500.0);
}
@Test
void getBalance() {
bankAccountService.getBalance();
}
}