Merge pull request #4 from myrlen/develop
Moved EventExpectation and related code from provisioner to lang.
diff --git a/build.gradle b/build.gradle
index 9741575..e6eafe8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -104,5 +104,6 @@
java = 'SLASHSTAR_STYLE'
}
ext.year = Calendar.getInstance().get(Calendar.YEAR)
- ext.name = 'The Mifos Initiative'
+ ext.name = 'Kuelap, Inc'
+ skipExistingHeaders true
}
\ No newline at end of file
diff --git a/src/main/java/io/mifos/core/lang/listening/EventExpectation.java b/src/main/java/io/mifos/core/lang/listening/EventExpectation.java
new file mode 100644
index 0000000..1e6f248
--- /dev/null
+++ b/src/main/java/io/mifos/core/lang/listening/EventExpectation.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2017 Kuelap, Inc
+ *
+ * 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 io.mifos.core.lang.listening;
+
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.locks.Condition;
+import java.util.concurrent.locks.ReentrantLock;
+
+/**
+ * @author Myrle Krantz
+ */
+public class EventExpectation {
+ private final EventKey key;
+ private boolean eventFound = false;
+ private boolean eventWithdrawn = false;
+
+ private final ReentrantLock lock = new ReentrantLock();
+
+ private final Condition found = lock.newCondition();
+
+ EventExpectation(final EventKey key) {
+ this.key = key;
+ }
+
+ EventKey getKey() {
+ return key;
+ }
+
+ void setEventFound() {
+ lock.lock();
+ try {
+ this.eventFound = true;
+ found.signal();
+ }
+ finally {
+ lock.unlock();
+ }
+ }
+
+ void setEventWithdrawn() {
+ lock.lock();
+ try {
+ this.eventWithdrawn = true;
+ found.signal();
+ }
+ finally {
+ lock.unlock();
+ }
+ }
+
+ @SuppressWarnings("WeakerAccess")
+ public boolean waitForOccurrence(long timeout, TimeUnit timeUnit) throws InterruptedException {
+
+ lock.lock();
+ try {
+ if (eventFound)
+ return true;
+
+ if (eventWithdrawn)
+ return false;
+
+ found.await(timeout, timeUnit);
+
+ return (eventFound);
+ }
+ finally {
+ lock.unlock();
+ }
+ }
+
+ @Override
+ public String toString() {
+ return key.toString();
+ }
+}
diff --git a/src/main/java/io/mifos/core/lang/listening/EventKey.java b/src/main/java/io/mifos/core/lang/listening/EventKey.java
new file mode 100644
index 0000000..9026288
--- /dev/null
+++ b/src/main/java/io/mifos/core/lang/listening/EventKey.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2017 Kuelap, Inc
+ *
+ * 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 io.mifos.core.lang.listening;
+
+import java.util.Objects;
+
+/**
+ * @author Myrle Krantz
+ */
+@SuppressWarnings("WeakerAccess")
+public class EventKey {
+ private String tenantIdentifier;
+ private String eventName;
+ private Object event;
+
+ public EventKey(
+ final String tenantIdentifier,
+ final String eventName,
+ final Object event) {
+ this.tenantIdentifier = tenantIdentifier;
+ this.eventName = eventName;
+ this.event = event;
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) return true;
+ if (o == null || getClass() != o.getClass()) return false;
+ EventKey eventKey = (EventKey) o;
+ return Objects.equals(tenantIdentifier, eventKey.tenantIdentifier) &&
+ Objects.equals(eventName, eventKey.eventName) &&
+ Objects.equals(event, eventKey.event);
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(tenantIdentifier, eventName, event);
+ }
+
+ @Override
+ public String toString() {
+ return "EventKey{" +
+ "tenantIdentifier='" + tenantIdentifier + '\'' +
+ ", eventName='" + eventName + '\'' +
+ ", event=" + event +
+ '}';
+ }
+}
diff --git a/src/main/java/io/mifos/core/lang/listening/TenantedEventListener.java b/src/main/java/io/mifos/core/lang/listening/TenantedEventListener.java
new file mode 100644
index 0000000..9993097
--- /dev/null
+++ b/src/main/java/io/mifos/core/lang/listening/TenantedEventListener.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2017 Kuelap, Inc
+ *
+ * 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 io.mifos.core.lang.listening;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * @author Myrle Krantz
+ */
+@SuppressWarnings("WeakerAccess")
+public class TenantedEventListener {
+ private final Map<EventKey, EventExpectation> eventExpectations = new ConcurrentHashMap<>();
+
+ public EventExpectation expect(final EventKey eventKey) {
+ final EventExpectation value = new EventExpectation(eventKey);
+ eventExpectations.put(eventKey, value);
+ return value;
+ }
+
+ public void notify(final EventKey eventKey) {
+ final EventExpectation eventExpectation = eventExpectations.remove(eventKey);
+ if (eventExpectation != null) {
+ eventExpectation.setEventFound();
+ }
+ }
+
+ public void withdrawExpectation(final EventExpectation eventExpectation) {
+ final EventExpectation expectation = eventExpectations.remove(eventExpectation.getKey());
+ if (expectation != null) {
+ eventExpectation.setEventWithdrawn();
+ }
+ }
+}
\ No newline at end of file
diff --git a/src/test/java/io/mifos/core/lang/listening/TenantedEventListenerTest.java b/src/test/java/io/mifos/core/lang/listening/TenantedEventListenerTest.java
new file mode 100644
index 0000000..ed919c0
--- /dev/null
+++ b/src/test/java/io/mifos/core/lang/listening/TenantedEventListenerTest.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2017 Kuelap, Inc
+ *
+ * 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 io.mifos.core.lang.listening;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.concurrent.TimeUnit;
+
+/**
+ * @author Myrle Krantz
+ */
+public class TenantedEventListenerTest {
+ static class SomeState {
+ boolean mutableBit = false;
+ }
+
+ @Test
+ public void shouldWaitForEventOccurenceTrue() throws InterruptedException {
+ final TenantedEventListener testSubject = new TenantedEventListener();
+ final EventKey eventKey = new EventKey("shouldWaitForEventOccurenceTrue", "blah", "blah");
+ final EventExpectation eventExpectation = testSubject.expect(eventKey);
+ final SomeState someState = stateThatMutatesIn60MillisThenNotifiesOnEventKey(testSubject, eventKey);
+
+ Assert.assertTrue(eventExpectation.waitForOccurrence(600, TimeUnit.MILLISECONDS));
+ Assert.assertTrue(someState.mutableBit);
+ }
+
+ @Test
+ public void shouldWaitForEventOccurenceFalse() throws InterruptedException {
+ final TenantedEventListener testSubject = new TenantedEventListener();
+ final EventKey eventKey = new EventKey("shouldWaitForEventOccurenceFalse", "blah", "blah");
+ final EventExpectation eventExpectation = testSubject.expect(eventKey);
+ final SomeState someState = stateThatMutatesIn60MillisThenNotifiesOnEventKey(testSubject, eventKey);
+
+ Assert.assertFalse(eventExpectation.waitForOccurrence(6, TimeUnit.MILLISECONDS));
+ Assert.assertFalse(someState.mutableBit); //Some potential for flakiness here, because this is timing dependent.
+ }
+
+ @Test
+ public void shouldNotWaitForEventOccurence() throws InterruptedException {
+ final TenantedEventListener testSubject = new TenantedEventListener();
+ final EventKey eventKey = new EventKey("shouldNotWaitForEventOccurence", "blah", "blah");
+ final EventExpectation eventExpectation = testSubject.expect(eventKey);
+ final SomeState someState = stateThatMutatesIn60MillisThenNotifiesOnEventKey(testSubject, eventKey);
+
+ testSubject.withdrawExpectation(eventExpectation);
+
+ Assert.assertFalse(eventExpectation.waitForOccurrence(600, TimeUnit.MILLISECONDS));
+ Assert.assertFalse(someState.mutableBit); //Some potential for flakiness here, because this is timing dependent.
+ }
+
+ private SomeState stateThatMutatesIn60MillisThenNotifiesOnEventKey(
+ final TenantedEventListener testSubject,
+ final EventKey eventKey) {
+ final SomeState someState = new SomeState();
+ new Thread(() -> {
+ try {
+ TimeUnit.MILLISECONDS.sleep(60);
+ someState.mutableBit = true;
+ testSubject.notify(eventKey);
+ } catch (InterruptedException e) {
+ e.printStackTrace();
+ }
+ }).start();
+ return someState;
+ }
+}
\ No newline at end of file
