retriever

package

v0.5.14 Latest Latest Go to latest Published: Apr 29, 2024 License: Apache-2.0, MIT Imports: 12 Imported by: 0

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Package retriever wraps functionality for fetching data from filecoin.

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type EndpointFinder interface {
	FindHTTPEndpoints(ctx context.Context, sps []string) ([]peer.AddrInfo, error)
}

EndpointFinder finds http endpoints for set of SPs

type Retriever struct {
	// contains filtered or unexported fields
}

Retriever wraps Lassie and HTTP endpoint lookup to returns a byte stream for a cid at the root of a unixfs tree, from a list of Filecoin providers

func NewRetriever(lassie lassietypes.Fetcher, endpointFinder EndpointFinder) *Retriever

NewRetriever returns a new retriever instance

func (r *Retriever) Retrieve(ctx context.Context, c cid.Cid, rangeStart int64, rangeEnd int64, sps []string, out io.Writer) error

Retrieve retrieves a byte range from a cid representing a unixfstree from a given list of SPs, writing the output to a car file

func (r *Retriever) RetrieveReader(ctx context.Context, c cid.Cid, rangeStart int64, rangeEnd int64, sps []string) (io.ReadCloser, error)

Path	Synopsis
deserializer
endpointfinder