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A module that provides core Testify SPI and implementation classes
/*
* Copyright 2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package org.testifyproject.failsafe;
import java.util.concurrent.Callable;
import java.util.concurrent.Semaphore;
import org.testifyproject.failsafe.function.AsyncCallable;
import org.testifyproject.failsafe.function.AsyncRunnable;
import org.testifyproject.failsafe.function.CheckedBiConsumer;
import org.testifyproject.failsafe.function.CheckedBiFunction;
import org.testifyproject.failsafe.function.CheckedConsumer;
import org.testifyproject.failsafe.function.CheckedFunction;
import org.testifyproject.failsafe.function.CheckedRunnable;
import org.testifyproject.failsafe.function.ContextualCallable;
import org.testifyproject.failsafe.function.ContextualRunnable;
import org.testifyproject.failsafe.internal.util.Assert;
/**
* Utilities and adapters for creating functions.
*
* @author Jonathan Halterman
*/
final class Functions {
static abstract class AsyncCallableWrapper implements Callable {
protected AsyncExecution execution;
void inject(AsyncExecution execution) {
this.execution = execution;
}
}
static abstract class ContextualCallableWrapper implements Callable {
protected ExecutionContext context;
void inject(ExecutionContext context) {
this.context = context;
}
}
static AsyncCallableWrapper asyncOf(final AsyncCallable callable) {
Assert.notNull(callable, "callable");
return new AsyncCallableWrapper() {
@Override
public synchronized T call() throws Exception {
try {
execution.before();
T result = callable.call(execution);
return result;
} catch (Throwable e) {
execution.completeOrRetry(null, e);
return null;
}
}
};
}
static AsyncCallableWrapper asyncOf(final AsyncRunnable runnable) {
Assert.notNull(runnable, "runnable");
return new AsyncCallableWrapper() {
@Override
public synchronized T call() throws Exception {
try {
execution.before();
runnable.run(execution);
} catch (Throwable e) {
execution.completeOrRetry(null, e);
}
return null;
}
};
}
static AsyncCallableWrapper asyncOf(final Callable callable) {
Assert.notNull(callable, "callable");
return new AsyncCallableWrapper() {
@Override
public T call() throws Exception {
try {
execution.before();
T result = callable.call();
execution.completeOrRetry(result, null);
return result;
} catch (Throwable e) {
execution.completeOrRetry(null, e);
return null;
}
}
};
}
static AsyncCallableWrapper asyncOf(final CheckedRunnable runnable) {
Assert.notNull(runnable, "runnable");
return new AsyncCallableWrapper() {
@Override
public T call() throws Exception {
try {
execution.before();
runnable.run();
execution.completeOrRetry(null, null);
} catch (Throwable e) {
execution.completeOrRetry(null, e);
}
return null;
}
};
}
static AsyncCallableWrapper asyncOf(final ContextualCallable callable) {
Assert.notNull(callable, "callable");
return new AsyncCallableWrapper() {
@Override
public T call() throws Exception {
try {
execution.before();
T result = callable.call(execution);
execution.completeOrRetry(result, null);
return result;
} catch (Throwable e) {
execution.completeOrRetry(null, e);
return null;
}
}
};
}
static AsyncCallableWrapper asyncOf(final ContextualRunnable runnable) {
Assert.notNull(runnable, "runnable");
return new AsyncCallableWrapper() {
@Override
public T call() throws Exception {
try {
execution.before();
runnable.run(execution);
execution.completeOrRetry(null, null);
} catch (Throwable e) {
execution.completeOrRetry(null, e);
}
return null;
}
};
}
static AsyncCallableWrapper asyncOfFuture(
final AsyncCallable> callable) {
Assert.notNull(callable, "callable");
return new AsyncCallableWrapper() {
Semaphore asyncFutureLock = new Semaphore(1);
@Override
public T call() throws Exception {
try {
execution.before();
asyncFutureLock.acquire();
callable.call(execution).whenComplete(new java.util.function.BiConsumer() {
@Override
public void accept(T innerResult, Throwable failure) {
try {
if (failure != null)
execution.completeOrRetry(innerResult,
failure instanceof java.util.concurrent.CompletionException ? failure.getCause() : failure);
} finally {
asyncFutureLock.release();
}
}
});
} catch (Throwable e) {
try {
execution.completeOrRetry(null, e);
} finally {
asyncFutureLock.release();
}
}
return null;
}
};
}
static AsyncCallableWrapper asyncOfFuture(final Callable> callable) {
Assert.notNull(callable, "callable");
return new AsyncCallableWrapper() {
@Override
public T call() throws Exception {
try {
execution.before();
callable.call().whenComplete(new java.util.function.BiConsumer() {
@Override
public void accept(T innerResult, Throwable failure) {
// Unwrap CompletionException cause
if (failure != null && failure instanceof java.util.concurrent.CompletionException)
failure = failure.getCause();
execution.completeOrRetry(innerResult, failure);
}
});
} catch (Throwable e) {
execution.completeOrRetry(null, e);
}
return null;
}
};
}
static AsyncCallableWrapper asyncOfFuture(
final ContextualCallable> callable) {
Assert.notNull(callable, "callable");
return new AsyncCallableWrapper() {
@Override
public T call() throws Exception {
try {
execution.before();
callable.call(execution).whenComplete(new java.util.function.BiConsumer() {
@Override
public void accept(T innerResult, Throwable failure) {
// Unwrap CompletionException cause
if (failure != null && failure instanceof java.util.concurrent.CompletionException)
failure = failure.getCause();
execution.completeOrRetry(innerResult, failure);
}
});
} catch (Throwable e) {
execution.completeOrRetry(null, e);
}
return null;
}
};
}
static Callable callableOf(final CheckedRunnable runnable) {
Assert.notNull(runnable, "runnable");
return new Callable() {
@Override
public T call() throws Exception {
runnable.run();
return null;
}
};
}
static Callable callableOf(final ContextualCallable callable) {
Assert.notNull(callable, "callable");
return new ContextualCallableWrapper() {
@Override
public T call() throws Exception {
T result = callable.call(context);
return result;
}
};
}
static Callable callableOf(final ContextualRunnable runnable) {
Assert.notNull(runnable, "runnable");
return new ContextualCallableWrapper() {
@Override
public T call() throws Exception {
runnable.run(context);
return null;
}
};
}
static CheckedBiFunction fnOf(final Callable callable) {
return new CheckedBiFunction() {
@Override
public R apply(T t, U u) throws Exception {
return callable.call();
}
};
}
static CheckedBiFunction fnOf(final CheckedBiConsumer consumer) {
return new CheckedBiFunction() {
@Override
public R apply(T t, U u) throws Exception {
consumer.accept(t, u);
return null;
}
};
}
static CheckedBiFunction fnOf(final CheckedConsumer consumer) {
return new CheckedBiFunction() {
@Override
public R apply(T t, U u) throws Exception {
consumer.accept(u);
return null;
}
};
}
static CheckedBiFunction fnOf(final CheckedFunction function) {
return new CheckedBiFunction() {
@Override
public R apply(T t, U u) throws Exception {
return function.apply(u);
}
};
}
static CheckedBiFunction fnOf(final CheckedRunnable runnable) {
return new CheckedBiFunction() {
@Override
public R apply(T t, U u) throws Exception {
runnable.run();
return null;
}
};
}
static CheckedBiFunction fnOf(final R result) {
return new CheckedBiFunction() {
@Override
public R apply(T t, U u) throws Exception {
return result;
}
};
}
}