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authorjhh <jorge.hernandez-herrero@att.com>2021-03-09 10:01:17 -0600
committerjhh <jorge.hernandez-herrero@att.com>2021-03-09 15:03:32 -0600
commit149df90bb72ece740accaf3ea037cf40defcd1bd (patch)
treef0895c1729c06403abecadca1065d3dfc25de35f /feature-no-locking/src
parentdd9d31e90873e12623865fb21bf2e4603e3e0f19 (diff)
add no locking feature
It provides an interface to applications for locking purposes that always succeeds. It does not deny acquiring resource locks. Issue-ID: POLICY-3114 Signed-off-by: jhh <jorge.hernandez-herrero@att.com> Change-Id: I6aebb5f40e4176e0ff7b0e6c6d4042a79dd0b7a3 Signed-off-by: jhh <jorge.hernandez-herrero@att.com>
Diffstat (limited to 'feature-no-locking/src')
-rw-r--r--feature-no-locking/src/assembly/assemble_zip.xml76
-rw-r--r--feature-no-locking/src/main/java/org/onap/policy/no/locking/NoLockManager.java96
-rw-r--r--feature-no-locking/src/main/resources/META-INF.services/org.onap.policy.drools.features.PolicyEngineFeatureApi1
-rw-r--r--feature-no-locking/src/test/java/org/onap/policy/no/locking/NoLockManagerTest.java96
4 files changed, 269 insertions, 0 deletions
diff --git a/feature-no-locking/src/assembly/assemble_zip.xml b/feature-no-locking/src/assembly/assemble_zip.xml
new file mode 100644
index 00000000..2c74fc00
--- /dev/null
+++ b/feature-no-locking/src/assembly/assemble_zip.xml
@@ -0,0 +1,76 @@
+<!--
+ ============LICENSE_START=======================================================
+ ONAP
+ ================================================================================
+ Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
+ ================================================================================
+ 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.
+ ============LICENSE_END=========================================================
+ -->
+
+<!-- Defines how we build the .zip file which is our distribution. -->
+
+<assembly
+ xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
+
+ <id>feature-no-locking</id>
+ <formats>
+ <format>zip</format>
+ </formats>
+
+ <includeBaseDirectory>false</includeBaseDirectory>
+
+ <fileSets>
+ <fileSet>
+ <directory>target</directory>
+ <outputDirectory>lib/feature</outputDirectory>
+ <includes>
+ <include>feature-no-locking-${project.version}.jar</include>
+ </includes>
+ </fileSet>
+ <fileSet>
+ <directory>target/assembly/lib</directory>
+ <outputDirectory>lib/dependencies</outputDirectory>
+ <includes>
+ <include>*.jar</include>
+ </includes>
+ </fileSet>
+ <fileSet>
+ <directory>src/main/feature/config</directory>
+ <outputDirectory>config</outputDirectory>
+ <fileMode>0644</fileMode>
+ <excludes/>
+ </fileSet>
+ <fileSet>
+ <directory>src/main/feature/bin</directory>
+ <outputDirectory>bin</outputDirectory>
+ <fileMode>0744</fileMode>
+ <excludes/>
+ </fileSet>
+ <fileSet>
+ <directory>src/main/feature/db</directory>
+ <outputDirectory>db</outputDirectory>
+ <fileMode>0744</fileMode>
+ <excludes/>
+ </fileSet>
+ <fileSet>
+ <directory>src/main/feature/install</directory>
+ <outputDirectory>install</outputDirectory>
+ <fileMode>0744</fileMode>
+ <excludes/>
+ </fileSet>
+ </fileSets>
+
+</assembly> \ No newline at end of file
diff --git a/feature-no-locking/src/main/java/org/onap/policy/no/locking/NoLockManager.java b/feature-no-locking/src/main/java/org/onap/policy/no/locking/NoLockManager.java
new file mode 100644
index 00000000..1fa44391
--- /dev/null
+++ b/feature-no-locking/src/main/java/org/onap/policy/no/locking/NoLockManager.java
@@ -0,0 +1,96 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.no.locking;
+
+import java.util.Properties;
+import lombok.NoArgsConstructor;
+import lombok.ToString;
+import org.onap.policy.drools.core.lock.AlwaysSuccessLock;
+import org.onap.policy.drools.core.lock.Lock;
+import org.onap.policy.drools.core.lock.LockCallback;
+import org.onap.policy.drools.core.lock.PolicyResourceLockManager;
+import org.onap.policy.drools.features.PolicyEngineFeatureApi;
+import org.onap.policy.drools.system.PolicyEngine;
+
+/**
+ * In contrast with other implementations the no-lock manager provides non-synchronized access
+ * to resources.
+ */
+
+@NoArgsConstructor
+@ToString
+public class NoLockManager implements PolicyResourceLockManager, PolicyEngineFeatureApi {
+
+ protected static final int SEQNO = 2000;
+
+ @Override
+ public Lock createLock(String resourceId, String ownerKey, int holdSec,
+ LockCallback callback, boolean waitForLock) {
+ AlwaysSuccessLock successLock = new AlwaysSuccessLock(resourceId, ownerKey, holdSec, callback);
+ successLock.notifyAvailable();
+ return successLock;
+ }
+
+ @Override
+ public boolean lock() {
+ return true;
+ }
+
+ @Override
+ public boolean unlock() {
+ return true;
+ }
+
+ @Override
+ public boolean isLocked() {
+ return false;
+ }
+
+ @Override
+ public boolean start() {
+ return true;
+ }
+
+ @Override
+ public boolean stop() {
+ return true;
+ }
+
+ @Override
+ public void shutdown() {
+ // nothing to do
+ }
+
+ @Override
+ public boolean isAlive() {
+ return true;
+ }
+
+ @Override
+ public int getSequenceNumber() {
+ return SEQNO;
+ }
+
+ @Override
+ public PolicyResourceLockManager beforeCreateLockManager(PolicyEngine engine, Properties properties) {
+ return this;
+ }
+}
diff --git a/feature-no-locking/src/main/resources/META-INF.services/org.onap.policy.drools.features.PolicyEngineFeatureApi b/feature-no-locking/src/main/resources/META-INF.services/org.onap.policy.drools.features.PolicyEngineFeatureApi
new file mode 100644
index 00000000..e8a5d79f
--- /dev/null
+++ b/feature-no-locking/src/main/resources/META-INF.services/org.onap.policy.drools.features.PolicyEngineFeatureApi
@@ -0,0 +1 @@
+org.onap.policy.no.locking.NoLockManager \ No newline at end of file
diff --git a/feature-no-locking/src/test/java/org/onap/policy/no/locking/NoLockManagerTest.java b/feature-no-locking/src/test/java/org/onap/policy/no/locking/NoLockManagerTest.java
new file mode 100644
index 00000000..bae9d109
--- /dev/null
+++ b/feature-no-locking/src/test/java/org/onap/policy/no/locking/NoLockManagerTest.java
@@ -0,0 +1,96 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.no.locking;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.policy.drools.core.lock.AlwaysSuccessLock;
+import org.onap.policy.drools.core.lock.Lock;
+import org.onap.policy.drools.core.lock.LockCallback;
+
+public class NoLockManagerTest {
+
+ private NoLockManager nlm;
+ private LockCallback callback;
+
+ @Before
+ public void setUp() {
+ callback = mock(LockCallback.class);
+ nlm = new NoLockManager();
+ }
+
+ @Test
+ public void testLock() {
+ assertTrue(nlm.lock());
+ }
+
+ @Test
+ public void testUnlock() {
+ assertTrue(nlm.unlock());
+ }
+
+ @Test
+ public void testIsLocked() {
+ assertFalse(nlm.isLocked());
+ }
+
+ @Test
+ public void testStart() {
+ assertTrue(nlm.start());
+ }
+
+ @Test
+ public void testStop() {
+ assertTrue(nlm.stop());
+ }
+
+ @Test
+ public void testIsAlive() {
+ assertTrue(nlm.isAlive());
+ }
+
+ @Test
+ public void testGetSeqNo() {
+ assertEquals(NoLockManager.SEQNO, nlm.getSequenceNumber());
+ }
+
+ @Test
+ public void testBeforeCreateLockManager() {
+ assertEquals(nlm, nlm.beforeCreateLockManager(null, null));
+ }
+
+ @Test
+ public void testCreateLock() {
+ Lock lock = nlm.createLock("x", "y", 1, callback, false);
+ assertTrue(lock.isActive());
+ assertTrue(lock instanceof AlwaysSuccessLock);
+ verify(callback).lockAvailable(lock);
+ verify(callback, never()).lockUnavailable(any());
+ }
+} \ No newline at end of file