51 lines
1.8 KiB
Markdown
51 lines
1.8 KiB
Markdown
# Extend storage
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SkyWalking has already provided several storage solutions. In this document, you could
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learn how to easily implement a new storage.
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## Define your storage provider
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1. Define class extension `org.apache.skywalking.oap.server.library.module.ModuleProvider`.
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2. Set this provider targeting to storage module.
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```java
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@Override
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public Class<? extends ModuleDefine> module() {
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return StorageModule.class;
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}
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```
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## Implement all DAOs
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Here's a list of all DAO interfaces in storage:
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1. IServiceInventoryCacheDAO
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1. IServiceInstanceInventoryCacheDAO
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1. IEndpointInventoryCacheDAO
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1. INetworkAddressInventoryCacheDAO
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1. IBatchDAO
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1. StorageDAO
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1. IRegisterLockDAO
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1. ITopologyQueryDAO
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1. IMetricsQueryDAO
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1. ITraceQueryDAO
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1. IMetadataQueryDAO
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1. IAggregationQueryDAO
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1. IAlarmQueryDAO
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1. IHistoryDeleteDAO
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1. IMetricsDAO
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1. IRecordDAO
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1. IRegisterDAO
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1. ILogQueryDAO
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1. ITopNRecordsQueryDAO
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1. IBrowserLogQueryDAO
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1. IProfileTaskQueryDAO
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1. IProfileTaskLogQueryDAO
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1. IProfileThreadSnapshotQueryDAO
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1. UITemplateManagementDAO
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## Register all service implementations
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In `public void prepare()`, use `this#registerServiceImplementation` method to register and bind with your implementation of the above interfaces.
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## Example
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`org.apache.skywalking.oap.server.storage.plugin.elasticsearch.StorageModuleElasticsearchProvider` and `org.apache.skywalking.oap.server.storage.plugin.jdbc.mysql.MySQLStorageProvider` are good examples.
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## Redistribution with new storage implementation
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To implement the storage, you don't have to clone the main repo. Simply use our Apache releases.
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Take a look at [SkyAPM/SkyWalking-With-Es5x-Storage](https://github.com/SkyAPM/SkyWalking-With-Es5x-Storage) repo, SkyWalking v6 redistribution with ElasticSearch 5 TCP connection storage implementation.
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