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Introduce NodeResolver and ReplicationState (#723)
* Introduce NodeResolver and ReplicationState * Fix PMD Violation
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| <?xml version="1.0" encoding="UTF-8"?> | ||
| <!-- | ||
| 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. | ||
| --> | ||
| <project xmlns="http://maven.apache.org/POM/4.0.0" | ||
| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" | ||
| xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> | ||
| <modelVersion>4.0.0</modelVersion> | ||
| <parent> | ||
| <groupId>com.ericsson.bss.cassandra.ecchronos</groupId> | ||
| <artifactId>agent</artifactId> | ||
| <version>1.0.0-SNAPSHOT</version> | ||
| </parent> | ||
|
|
||
| <artifactId>core.impl</artifactId> | ||
|
|
||
| <dependencies> | ||
| <!-- Internal --> | ||
| <dependency> | ||
| <groupId>com.ericsson.bss.cassandra.ecchronos</groupId> | ||
| <artifactId>core</artifactId> | ||
| <version>${project.version}</version> | ||
| </dependency> | ||
|
|
||
| <dependency> | ||
| <groupId>com.ericsson.bss.cassandra.ecchronos</groupId> | ||
| <artifactId>connection</artifactId> | ||
| <version>${project.version}</version> | ||
| </dependency> | ||
|
|
||
| <dependency> | ||
| <groupId>com.datastax.oss</groupId> | ||
| <artifactId>java-driver-core</artifactId> | ||
| </dependency> | ||
|
|
||
| <!-- Cassandra driver --> | ||
| <dependency> | ||
| <groupId>com.datastax.oss</groupId> | ||
| <artifactId>java-driver-query-builder</artifactId> | ||
| </dependency> | ||
|
|
||
| <dependency> | ||
| <groupId>com.google.guava</groupId> | ||
| <artifactId>guava</artifactId> | ||
| </dependency> | ||
|
|
||
| <dependency> | ||
| <groupId>com.github.ben-manes.caffeine</groupId> | ||
| <artifactId>caffeine</artifactId> | ||
| </dependency> | ||
|
|
||
| <!-- Logging --> | ||
| <dependency> | ||
| <groupId>org.slf4j</groupId> | ||
| <artifactId>slf4j-api</artifactId> | ||
| </dependency> | ||
|
|
||
| <!-- Test --> | ||
| <dependency> | ||
| <groupId>org.junit.vintage</groupId> | ||
| <artifactId>junit-vintage-engine</artifactId> | ||
| <scope>test</scope> | ||
| </dependency> | ||
|
|
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| <dependency> | ||
| <groupId>commons-io</groupId> | ||
| <artifactId>commons-io</artifactId> | ||
| <scope>test</scope> | ||
| </dependency> | ||
|
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| <dependency> | ||
| <groupId>org.awaitility</groupId> | ||
| <artifactId>awaitility</artifactId> | ||
| <scope>test</scope> | ||
| </dependency> | ||
|
|
||
| <dependency> | ||
| <groupId>org.mockito</groupId> | ||
| <artifactId>mockito-core</artifactId> | ||
| <scope>test</scope> | ||
| </dependency> | ||
|
|
||
| <dependency> | ||
| <groupId>org.assertj</groupId> | ||
| <artifactId>assertj-core</artifactId> | ||
| <scope>test</scope> | ||
| </dependency> | ||
| </dependencies> | ||
| </project> |
102 changes: 102 additions & 0 deletions
102
...c/main/java/com/ericsson/bss/cassandra/ecchronos/core/impl/metadata/NodeResolverImpl.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| /* | ||
| * 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.metadata; | ||
|
|
||
| import com.ericsson.bss.cassandra.ecchronos.core.metadata.DriverNode; | ||
| import com.ericsson.bss.cassandra.ecchronos.core.metadata.NodeResolver; | ||
| import java.net.InetAddress; | ||
| import java.util.Optional; | ||
| import java.util.UUID; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
| import java.util.concurrent.ConcurrentMap; | ||
|
|
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| import com.datastax.oss.driver.api.core.CqlSession; | ||
| import com.datastax.oss.driver.api.core.metadata.Metadata; | ||
| import com.datastax.oss.driver.api.core.metadata.Node; | ||
|
|
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| public class NodeResolverImpl implements NodeResolver | ||
| { | ||
| private final ConcurrentMap<InetAddress, DriverNode> addressToNodeMap = new ConcurrentHashMap<>(); | ||
| private final ConcurrentMap<UUID, DriverNode> idToNodeMap = new ConcurrentHashMap<>(); | ||
|
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| private final CqlSession session; | ||
|
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| public NodeResolverImpl(final CqlSession aSession) | ||
| { | ||
| this.session = aSession; | ||
| } | ||
|
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| @Override | ||
| public final Optional<DriverNode> fromIp(final InetAddress inetAddress) | ||
| { | ||
| DriverNode node = addressToNodeMap.get(inetAddress); | ||
|
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| if (node == null) | ||
| { | ||
| node = addressToNodeMap.computeIfAbsent(inetAddress, address -> lookup(inetAddress)); | ||
| } | ||
| else if (!inetAddress.equals(node.getPublicAddress())) | ||
| { | ||
| // IP mapping is wrong, we should remove the old entry and retry | ||
| addressToNodeMap.remove(inetAddress, node); | ||
| return fromIp(inetAddress); | ||
| } | ||
|
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| return Optional.ofNullable(node); | ||
| } | ||
|
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| @Override | ||
| public final Optional<DriverNode> fromUUID(final UUID nodeId) | ||
| { | ||
| return Optional.ofNullable(resolve(nodeId)); | ||
| } | ||
|
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| private DriverNode resolve(final UUID nodeId) | ||
| { | ||
| DriverNode node = idToNodeMap.get(nodeId); | ||
| if (node == null) | ||
| { | ||
| node = idToNodeMap.computeIfAbsent(nodeId, this::lookup); | ||
| } | ||
|
|
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| return node; | ||
| } | ||
|
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| private DriverNode lookup(final UUID nodeId) | ||
| { | ||
| Metadata metadata = session.getMetadata(); | ||
| for (Node node : metadata.getNodes().values()) | ||
| { | ||
| if (node.getHostId().equals(nodeId)) | ||
| { | ||
| return new DriverNode(node); | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
|
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| private DriverNode lookup(final InetAddress inetAddress) | ||
| { | ||
| Metadata metadata = session.getMetadata(); | ||
| for (Node node : metadata.getNodes().values()) | ||
| { | ||
| if (node.getBroadcastAddress().get().getAddress().equals(inetAddress)) | ||
| { | ||
| return resolve(node.getHostId()); | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
| } |
18 changes: 18 additions & 0 deletions
18
...l/src/main/java/com/ericsson/bss/cassandra/ecchronos/core/impl/metadata/package-info.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
| /** | ||
| * Contains the implementations and resources for mapping node metadata. | ||
| */ | ||
| package com.ericsson.bss.cassandra.ecchronos.core.impl.metadata; |
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