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Cassandra based distributed locking mechanism # 741
- Cassandra tables called lock and lock_priority, to manage task execution and synchronization across multiple nodes.
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sajid riaz
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Nov 5, 2024
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53 changes: 53 additions & 0 deletions
53
...sson/bss/cassandra/ecchronos/application/config/lockfactory/TestCasLockFactoryConfig.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| /* | ||
| * Copyright 2024 Telefonaktiebolaget LM Ericsson | ||
| * | ||
| * 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 com.ericsson.bss.cassandra.ecchronos.application.config.lockfactory; | ||
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| import com.ericsson.bss.cassandra.ecchronos.application.config.Config; | ||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import com.fasterxml.jackson.dataformat.yaml.YAMLFactory; | ||
| import org.junit.Test; | ||
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| import java.io.File; | ||
| import java.io.IOException; | ||
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| import static org.assertj.core.api.Assertions.assertThat; | ||
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| public class TestCasLockFactoryConfig | ||
| { | ||
| @Test | ||
| public void testCasLockFactoryConfigWithProvidedValue() throws IOException | ||
| { | ||
| CasLockFactoryConfig casLockFactoryConfig = getCasLockFactoryConfig("all_set.yml"); | ||
| assertThat(casLockFactoryConfig.getKeyspaceName()).isEqualTo("ecc"); | ||
| assertThat(casLockFactoryConfig.getFailureCacheExpiryTimeInSeconds()).isEqualTo(100L); | ||
| } | ||
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| @Test | ||
| public void testCasLockFactoryConfigDefaultValue() throws IOException | ||
| { | ||
| CasLockFactoryConfig casLockFactoryConfig = getCasLockFactoryConfig("nothing_set.yml"); | ||
| assertThat(casLockFactoryConfig.getKeyspaceName()).isEqualTo("ecchronos"); | ||
| assertThat(casLockFactoryConfig.getFailureCacheExpiryTimeInSeconds()).isEqualTo(30L); | ||
| } | ||
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| private CasLockFactoryConfig getCasLockFactoryConfig(final String fileName) throws IOException | ||
| { | ||
| ClassLoader classLoader = Thread.currentThread().getContextClassLoader(); | ||
| File file = new File(classLoader.getResource(fileName).getFile()); | ||
| ObjectMapper mapper = new ObjectMapper(new YAMLFactory()); | ||
| Config config = mapper.readValue(file, Config.class); | ||
| return config.getLockFactory().getCasLockFactoryConfig(); | ||
| } | ||
| } |
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104 changes: 104 additions & 0 deletions
104
...t/java/com/ericsson/bss/cassandra/ecchronos/core/impl/AbstractCassandraContainerTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| /* | ||
| * Copyright 2024 Telefonaktiebolaget LM Ericsson | ||
| * | ||
| * 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 com.ericsson.bss.cassandra.ecchronos.core.impl; | ||
|
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| import com.ericsson.bss.cassandra.ecchronos.connection.DistributedNativeConnectionProvider; | ||
| import java.net.InetSocketAddress; | ||
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| import java.util.List; | ||
| import org.junit.AfterClass; | ||
| import org.junit.BeforeClass; | ||
| import org.testcontainers.containers.CassandraContainer; | ||
| import org.testcontainers.utility.DockerImageName; | ||
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| import com.datastax.oss.driver.api.core.CqlSession; | ||
| import com.datastax.oss.driver.api.core.metadata.Node; | ||
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| public class AbstractCassandraContainerTest | ||
| { | ||
| protected static CqlSession mySession; | ||
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| private static DistributedNativeConnectionProvider myNativeConnectionProvider; | ||
| private static CassandraContainer<?> node; | ||
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| @SuppressWarnings ("resource") | ||
| @BeforeClass | ||
| public static void setUpCluster() | ||
| { | ||
| // This is set as an environment variable ('it.cassandra.version') in maven using the '-D' flag. | ||
| String cassandraVersion = System.getProperty("it.cassandra.version"); | ||
| if (cassandraVersion == null) | ||
| { | ||
| // No environment version set, just use latest. | ||
| cassandraVersion = "latest"; | ||
| } | ||
| node = new CassandraContainer<>(DockerImageName.parse("cassandra:" + cassandraVersion)) | ||
| .withExposedPorts(9042, 7000, 7199) | ||
| .withEnv("CASSANDRA_DC", "DC1") | ||
| .withEnv("CASSANDRA_ENDPOINT_SNITCH", "GossipingPropertyFileSnitch") | ||
| .withEnv("CASSANDRA_CLUSTER_NAME", "TestCluster") | ||
| .withEnv("JMX_PORT", "7199"); | ||
| node.start(); | ||
| String containerIpAddress = node.getHost(); | ||
| Integer containerPort = node.getMappedPort(9042); | ||
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| mySession = CqlSession.builder() | ||
| .addContactPoint(new InetSocketAddress(containerIpAddress, containerPort)) | ||
| .withLocalDatacenter("DC1") | ||
| .build(); | ||
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| List<Node> nodesList = mySession.getMetadata().getNodes().values().stream().toList(); | ||
| myNativeConnectionProvider = new DistributedNativeConnectionProvider() | ||
| { | ||
| @Override | ||
| public CqlSession getCqlSession() | ||
| { | ||
| return mySession; | ||
| } | ||
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| @Override | ||
| public List<Node> getNodes() | ||
| { | ||
| return nodesList; | ||
| } | ||
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| @Override | ||
| public boolean getRemoteRouting() | ||
| { | ||
| return true; | ||
| } | ||
| }; | ||
| } | ||
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| @AfterClass | ||
| public static void tearDownCluster() | ||
| { | ||
| if (mySession != null) | ||
| { | ||
| mySession.close(); | ||
| } | ||
| node.stop(); | ||
| } | ||
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| public static DistributedNativeConnectionProvider getNativeConnectionProvider() | ||
| { | ||
| return myNativeConnectionProvider; | ||
| } | ||
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| public static CassandraContainer<?> getContainerNode() | ||
| { | ||
| return node; | ||
| } | ||
| } |
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