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65 changes: 65 additions & 0 deletions
65
.../opensearch/cluster/service/applicationtemplates/ClusterStateComponentTemplateLoader.java
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| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
|
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| package org.opensearch.cluster.service.applicationtemplates; | ||
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| import org.apache.logging.log4j.LogManager; | ||
| import org.apache.logging.log4j.Logger; | ||
| import org.opensearch.action.admin.indices.template.put.PutComponentTemplateAction; | ||
| import org.opensearch.client.Client; | ||
| import org.opensearch.client.OriginSettingClient; | ||
| import org.opensearch.cluster.ClusterState; | ||
| import org.opensearch.cluster.metadata.ComponentTemplate; | ||
| import org.opensearch.common.unit.TimeValue; | ||
| import org.opensearch.common.xcontent.json.JsonXContent; | ||
| import org.opensearch.core.xcontent.DeprecationHandler; | ||
| import org.opensearch.core.xcontent.NamedXContentRegistry; | ||
| import org.opensearch.core.xcontent.XContentParser; | ||
| import org.opensearch.threadpool.ThreadPool; | ||
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| import java.io.IOException; | ||
| import java.nio.charset.StandardCharsets; | ||
| import java.util.function.Supplier; | ||
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| public class ClusterStateComponentTemplateLoader implements TemplateLoader { | ||
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| private Client client; | ||
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| private Supplier<ClusterState> clusterStateSupplier; | ||
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| private static final Logger logger = LogManager.getLogger(TemplateLoader.class); | ||
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| public static final String TEMPLATE_LOADER_IDENTIFIER = "system_template_loader"; | ||
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| public ClusterStateComponentTemplateLoader(Client client, | ||
| ThreadPool threadPool, | ||
| Supplier<ClusterState> clusterStateSupplier) { | ||
| this.client = new OriginSettingClient(client, TEMPLATE_LOADER_IDENTIFIER); | ||
| this.clusterStateSupplier = clusterStateSupplier; | ||
| } | ||
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| @Override | ||
| public void loadTemplate(SystemTemplate template) throws IOException { | ||
| ComponentTemplate existingTemplate = clusterStateSupplier.get().metadata().componentTemplates().get(template.templateInfo().fullyQualifiedName()); | ||
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| XContentParser contentParser = JsonXContent.jsonXContent.createParser(NamedXContentRegistry.EMPTY, DeprecationHandler.IGNORE_DEPRECATIONS, | ||
| template.templateContent().utf8ToString()); | ||
| ComponentTemplate newTemplate = ComponentTemplate.parse(contentParser); | ||
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| if (existingTemplate != null && existingTemplate.version() >= newTemplate.version()) { | ||
| logger.debug("Skipping putting template {} as its existing version [{}] is >= fetched version [{}]", template.templateInfo().fullyQualifiedName(), | ||
| existingTemplate.version(), | ||
| newTemplate.version()); | ||
| } | ||
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| PutComponentTemplateAction.Request request = new PutComponentTemplateAction.Request(template.templateInfo().fullyQualifiedName()) | ||
| .componentTemplate(newTemplate); | ||
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| client.admin().indices().execute(PutComponentTemplateAction.INSTANCE, request).actionGet(TimeValue.timeValueMillis(30000)); | ||
| } | ||
| } |
41 changes: 41 additions & 0 deletions
41
server/src/main/java/org/opensearch/cluster/service/applicationtemplates/SystemTemplate.java
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| @@ -0,0 +1,41 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
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| package org.opensearch.cluster.service.applicationtemplates; | ||
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| import org.opensearch.core.common.bytes.BytesReference; | ||
|
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| /** | ||
| * Encapsulates the information and content about a system template available within a repository. | ||
| */ | ||
| public class SystemTemplate { | ||
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| private final BytesReference templateContent; | ||
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| private final SystemTemplateInfo templateInfo; | ||
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| private final TemplateRepositoryInfo repositoryInfo; | ||
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| public SystemTemplate(BytesReference templateContent, SystemTemplateInfo templateInfo, TemplateRepositoryInfo repositoryInfo) { | ||
| this.templateContent = templateContent; | ||
| this.templateInfo = templateInfo; | ||
| this.repositoryInfo = repositoryInfo; | ||
| } | ||
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| public BytesReference templateContent() { | ||
| return templateContent; | ||
| } | ||
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| public SystemTemplateInfo templateInfo() { | ||
| return templateInfo; | ||
| } | ||
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| public TemplateRepositoryInfo repositoryInfo() { | ||
| return repositoryInfo; | ||
| } | ||
| } |
53 changes: 53 additions & 0 deletions
53
...src/main/java/org/opensearch/cluster/service/applicationtemplates/SystemTemplateInfo.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
|
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| package org.opensearch.cluster.service.applicationtemplates; | ||
|
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| /** | ||
| * Metadata information about a template available in a template repository. | ||
| */ | ||
| public class SystemTemplateInfo { | ||
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| private final long version; | ||
| private final String type; | ||
| private final String name; | ||
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| private static final String DELIMITER = "@"; | ||
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| public static final String COMPONENT_TEMPLATE_TYPE = "@abc_template"; | ||
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| public SystemTemplateInfo(long version, String type, String name) { | ||
| this.version = version; | ||
| this.type = type; | ||
| this.name = name; | ||
| } | ||
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| public String type() { | ||
| return type; | ||
| } | ||
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| public String name() { | ||
| return name; | ||
| } | ||
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| public long version() { | ||
| return version; | ||
| } | ||
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| public static SystemTemplateInfo fromComponentTemplate(String fullyQualifiedName) { | ||
| return new SystemTemplateInfo(Long.parseLong(fullyQualifiedName.substring(fullyQualifiedName.lastIndexOf(DELIMITER))), COMPONENT_TEMPLATE_TYPE, fullyQualifiedName.substring(0, fullyQualifiedName.lastIndexOf(DELIMITER))); | ||
| } | ||
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| public static SystemTemplateInfo createComponentTemplateInfo(String name, long version) { | ||
| return new SystemTemplateInfo(version, COMPONENT_TEMPLATE_TYPE, name); | ||
| } | ||
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| public final String fullyQualifiedName() { | ||
| return name + DELIMITER + version; | ||
| } | ||
| } |
28 changes: 28 additions & 0 deletions
28
.../main/java/org/opensearch/cluster/service/applicationtemplates/SystemTemplatesPlugin.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
|
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| package org.opensearch.cluster.service.applicationtemplates; | ||
|
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| import java.io.IOException; | ||
|
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| /** | ||
| * Plugin interface to expose the template maintaining logic. | ||
| */ | ||
| public interface SystemTemplatesPlugin { | ||
|
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| /** | ||
| * @return repository implementation from which templates are to be fetched. | ||
| */ | ||
| TemplateRepository loadRepository() throws IOException; | ||
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| /** | ||
| * @param templateInfo Metadata about the template to load | ||
| * @return Implementation of TemplateLoader which determines how to make the template available at runtime. | ||
| */ | ||
| TemplateLoader loaderFor(SystemTemplateInfo templateInfo); | ||
| } |
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