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Revert datasource state when delete fails #382

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Aug 16, 2023
Merged

Revert datasource state when delete fails #382

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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -17,6 +17,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
* IP2Geo processor implementation ([#362](https://github.com/opensearch-project/geospatial/pull/362))
### Enhancements
### Bug Fixes
* Revert datasource state when delete fails([#382](https://github.com/opensearch-project/geospatial/pull/382))
### Infrastructure
* Make jacoco report to be generated faster in local ([#267](https://github.com/opensearch-project/geospatial/pull/267))
* Exclude lombok generated code from jacoco coverage report ([#268](https://github.com/opensearch-project/geospatial/pull/268))
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13 changes: 11 additions & 2 deletions src/main/java/org/opensearch/geospatial/ip2geo/action/DeleteDatasourceTransportAction.java
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Expand Up @@ -111,9 +111,18 @@ protected void deleteDatasource(final String datasourceName) throws IOException
if (datasource == null) {
throw new ResourceNotFoundException("no such datasource exist");
}

DatasourceState previousState = datasource.getState();
setDatasourceStateAsDeleting(datasource);
geoIpDataDao.deleteIp2GeoDataIndex(datasource.getIndices());

try {
geoIpDataDao.deleteIp2GeoDataIndex(datasource.getIndices());
} catch (Exception e) {
if (previousState.equals(datasource.getState()) == false) {
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what is the scenario when datasource has previous state? We're setting it to "deleting" before we call delete method in setDatasourceStateAsDeleting().

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We first change the datasource state to "deleting" and run the delete process. So, datasource always has previous state either "available", "create_failed", or "deleting".

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Got more info on scenario, we need to delete two resources(index and metadata), if we fail to delete metadata, we don’t revert state because index for data is already deleted

datasource.setState(previousState);
datasourceDao.updateDatasource(datasource);
}
throw e;
}
datasourceDao.deleteDatasource(datasource);
}

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16 changes: 16 additions & 0 deletions ...st/java/org/opensearch/geospatial/ip2geo/action/DeleteDatasourceTransportActionTests.java
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Expand Up @@ -8,6 +8,7 @@
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyLong;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.times;
Expand Down Expand Up @@ -162,4 +163,19 @@ public void testDeleteDatasource_whenProcessorIsCreatedDuringDeletion_thenThrowE
verify(geoIpDataDao, never()).deleteIp2GeoDataIndex(datasource.getIndices());
verify(datasourceDao, never()).deleteDatasource(datasource);
}

@SneakyThrows
public void testDeleteDatasource_whenDeleteFailsAfterStateIsChanged_thenRevertState() {
Datasource datasource = randomDatasource();
datasource.setState(DatasourceState.AVAILABLE);
when(datasourceDao.getDatasource(datasource.getName())).thenReturn(datasource);
doThrow(new RuntimeException()).when(geoIpDataDao).deleteIp2GeoDataIndex(datasource.getIndices());

// Run
expectThrows(RuntimeException.class, () -> action.deleteDatasource(datasource.getName()));

// Verify
verify(datasourceDao, times(2)).updateDatasource(datasource);
assertEquals(DatasourceState.AVAILABLE, datasource.getState());
}
}
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