Package org.apache.nifi.flow.resource

Interface ExternalResourceProvider

public interface ExternalResourceProvider

Represents an external source where the resource files might be acquired from. These external resources might be various: database drivers, different kind of configurations and so on.

Method Summary

Modifier and Type	Method	Description
InputStream	fetchExternalResource(ExternalResourceDescriptor descriptor)	Fetches the resource determined by the descriptor.
void	initialize(ExternalResourceProviderInitializationContext context)	Initializes the External Resource Provider based on the given set of properties.
Collection<ExternalResourceDescriptor>	listResources()	Performs a listing of all resources that are available.

Method Details

initialize

void initialize(ExternalResourceProviderInitializationContext context)

Initializes the External Resource Provider based on the given set of properties.

listResources

Collection<ExternalResourceDescriptor> listResources()
                                              throws IOException

Performs a listing of all resources that are available.

Throws:

IOException

fetchExternalResource

InputStream fetchExternalResource(ExternalResourceDescriptor descriptor)
                           throws IOException

Fetches the resource determined by the descriptor. This usually happens based on ExternalResourceDescriptor#getLocation but implementations might differ.

Throws:

IOException