Extend storage

SkyWalking has already provided several storage solutions. In this document, you could learn how to implement a new storage easily.

Define your storage provider

  1. Define a class extends org.apache.skywalking.oap.server.library.module.ModuleProvider.
  2. Set this provider targeting to Storage module.
@Override 
public Class<? extends ModuleDefine> module() {
    return StorageModule.class;
}

Implement all DAOs

Here is the list of all DAO interfaces in storage

  1. IServiceInventoryCacheDAO

  2. IServiceInstanceInventoryCacheDAO

  3. IEndpointInventoryCacheDAO

  4. INetworkAddressInventoryCacheDAO

  5. IBatchDAO

  6. StorageDAO

  7. IRegisterLockDAO

  8. ITopologyQueryDAO

  9. IMetricsQueryDAO

  10. ITraceQueryDAO

  11. IMetadataQueryDAO

  12. IAggregationQueryDAO

  13. IAlarmQueryDAO

  14. IHistoryDeleteDAO

  15. IMetricsDAO

  16. IRecordDAO

  17. IRegisterDAO

  18. ILogQueryDAO

  19. ITopNRecordsQueryDAO

  20. IBrowserLogQueryDAO

  21. IProfileTaskQueryDAO

  22. IProfileTaskLogQueryDAO

  23. IProfileThreadSnapshotQueryDAO

  24. UITemplateManagementDAO

Register all service implementations

In public void prepare(), use this#registerServiceImplementation method to do register binding your implementation with the above interfaces.

Example

Take org.apache.skywalking.oap.server.storage.plugin.elasticsearch.StorageModuleElasticsearchProvider or org.apache.skywalking.oap.server.storage.plugin.jdbc.mysql.MySQLStorageProvider as a good example.

Redistribution with new storage implementation.

You don’t have to clone the main repo just for implementing the storage. You could just easy depend our Apache releases. Take a look at SkyAPM/SkyWalking-With-Es5x-Storage repo, SkyWalking v6 redistribution with ElasticSearch 5 TCP connection storage implementation.