Examples with RetryCallback cn.taketoday.retry.RetryCallback used on opensource projects

Example 11 with RetryCallback

use of cn.taketoday.retry.RetryCallback in project today-framework by TAKETODAY.

the class StatefulRecoveryRetryTests method testCacheCapacityNotReachedIfRecovered.

@Test
public void testCacheCapacityNotReachedIfRecovered() throws Throwable {
    SimpleRetryPolicy retryPolicy = new SimpleRetryPolicy(1);
    this.retryTemplate.setRetryPolicy(retryPolicy);
    this.retryTemplate.setRetryContextCache(new MapRetryContextCache(2));
    final StringHolder item = new StringHolder("foo");
    RetryState state = new DefaultRetryState(item);
    RetryCallback<Object, Exception> callback = new RetryCallback<Object, Exception>() {

        @Override
        public Object doWithRetry(RetryContext context) throws Exception {
            StatefulRecoveryRetryTests.this.count++;
            throw new RuntimeException("Barf!");
        }
    };
    RecoveryCallback<Object> recoveryCallback = new RecoveryCallback<Object>() {

        @Override
        public Object recover(RetryContext context) throws Exception {
            return null;
        }
    };
    try {
        this.retryTemplate.execute(callback, recoveryCallback, state);
        fail("Expected RuntimeException");
    } catch (RuntimeException e) {
        assertEquals("Barf!", e.getMessage());
    }
    this.retryTemplate.execute(callback, recoveryCallback, state);
    RetryContext context = this.retryTemplate.open(retryPolicy, state);
    // True after exhausted - the history is reset...
    assertEquals(0, context.getRetryCount());
}

Example 12 with RetryCallback

use of cn.taketoday.retry.RetryCallback in project today-framework by TAKETODAY.

the class StatefulRecoveryRetryTests method testKeyGeneratorNotConsistentAfterFailure.

@Test
public void testKeyGeneratorNotConsistentAfterFailure() throws Throwable {
    RetryPolicy retryPolicy = new SimpleRetryPolicy(3);
    this.retryTemplate.setRetryPolicy(retryPolicy);
    final StringHolder item = new StringHolder("bar");
    RetryState state = new DefaultRetryState(item);
    RetryCallback<StringHolder, Exception> callback = new RetryCallback<StringHolder, Exception>() {

        @Override
        public StringHolder doWithRetry(RetryContext context) throws Exception {
            // This simulates what happens if someone uses a primary key
            // for hashCode and equals and then relies on default key
            // generator
            item.string = item.string + (StatefulRecoveryRetryTests.this.count++);
            throw new RuntimeException("Barf!");
        }
    };
    try {
        this.retryTemplate.execute(callback, state);
        fail("Expected RuntimeException");
    } catch (RuntimeException ex) {
        String message = ex.getMessage();
        assertEquals("Barf!", message);
    }
    // item already...
    try {
        this.retryTemplate.execute(callback, state);
        fail("Expected RetryException");
    } catch (RetryException ex) {
        String message = ex.getNestedMessage();
        assertTrue("Message doesn't contain 'inconsistent': " + message, message.contains("inconsistent"));
    }
    RetryContext context = this.retryTemplate.open(retryPolicy, state);
    // True after exhausted - the history is reset...
    assertEquals(0, context.getRetryCount());
}

Example 13 with RetryCallback

use of cn.taketoday.retry.RetryCallback in project today-framework by TAKETODAY.

the class StatefulRecoveryRetryTests method testCacheCapacity.

@Test
public void testCacheCapacity() throws Throwable {
    this.retryTemplate.setRetryPolicy(new SimpleRetryPolicy(1));
    this.retryTemplate.setRetryContextCache(new MapRetryContextCache(1));
    RetryCallback<Object, Exception> callback = context -> {
        StatefulRecoveryRetryTests.this.count++;
        throw new RuntimeException("Barf!");
    };
    try {
        this.retryTemplate.execute(callback, new DefaultRetryState("foo"));
        fail("Expected RuntimeException");
    } catch (RuntimeException e) {
        assertEquals("Barf!", e.getMessage());
    }
    try {
        this.retryTemplate.execute(callback, new DefaultRetryState("bar"));
        fail("Expected RetryException");
    } catch (RetryException e) {
        String message = e.getNestedMessage();
        assertTrue("Message does not contain 'capacity': " + message, message.contains("capacity"));
    }
}

Example 14 with RetryCallback

use of cn.taketoday.retry.RetryCallback in project today-infrastructure by TAKETODAY.

the class StatefulRecoveryRetryTests method testKeyGeneratorNotConsistentAfterFailure.

@Test
public void testKeyGeneratorNotConsistentAfterFailure() throws Throwable {
    RetryPolicy retryPolicy = new SimpleRetryPolicy(3);
    this.retryTemplate.setRetryPolicy(retryPolicy);
    final StringHolder item = new StringHolder("bar");
    RetryState state = new DefaultRetryState(item);
    RetryCallback<StringHolder, Exception> callback = new RetryCallback<StringHolder, Exception>() {

        @Override
        public StringHolder doWithRetry(RetryContext context) throws Exception {
            // This simulates what happens if someone uses a primary key
            // for hashCode and equals and then relies on default key
            // generator
            item.string = item.string + (StatefulRecoveryRetryTests.this.count++);
            throw new RuntimeException("Barf!");
        }
    };
    try {
        this.retryTemplate.execute(callback, state);
        fail("Expected RuntimeException");
    } catch (RuntimeException ex) {
        String message = ex.getMessage();
        assertEquals("Barf!", message);
    }
    // item already...
    try {
        this.retryTemplate.execute(callback, state);
        fail("Expected RetryException");
    } catch (RetryException ex) {
        String message = ex.getNestedMessage();
        assertTrue("Message doesn't contain 'inconsistent': " + message, message.contains("inconsistent"));
    }
    RetryContext context = this.retryTemplate.open(retryPolicy, state);
    // True after exhausted - the history is reset...
    assertEquals(0, context.getRetryCount());
}

Example 15 with RetryCallback

use of cn.taketoday.retry.RetryCallback in project today-infrastructure by TAKETODAY.

the class StatefulRecoveryRetryTests method testRecover.

@Test
public void testRecover() throws Throwable {
    this.retryTemplate.setRetryPolicy(new SimpleRetryPolicy(1));
    final String input = "foo";
    RetryState state = new DefaultRetryState(input);
    RetryCallback<String, Exception> callback = new RetryCallback<String, Exception>() {

        @Override
        public String doWithRetry(RetryContext context) throws Exception {
            throw new RuntimeException("Barf!");
        }
    };
    RecoveryCallback<String> recoveryCallback = new RecoveryCallback<String>() {

        @Override
        public String recover(RetryContext context) {
            StatefulRecoveryRetryTests.this.count++;
            StatefulRecoveryRetryTests.this.list.add(input);
            return input;
        }
    };
    Object result = null;
    try {
        result = this.retryTemplate.execute(callback, recoveryCallback, state);
        fail("Expected exception on first try");
    } catch (Exception e) {
    // expected...
    }
    // On the second retry, the recovery path is taken...
    result = this.retryTemplate.execute(callback, recoveryCallback, state);
    // default result is the item
    assertEquals(input, result);
    assertEquals(1, this.count);
    assertEquals(input, this.list.get(0));
}