GitLab

dep: update go-cid

So we can force upstream to update, even if they don't directly depend on go-cid.

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protonmail.ch>

Add a DAG walker with support for IPLD `Node`s

Add a `Walker` structure with a simple interface to iterate and search inside DAGs, where a DAG need not be DAG of IPLD nodes but any graph of nodes meeting the `NavigableNode` interface.

Add a `NavigableIPLDNode` structure (encapsulating the IPLD `Node` interface) that implements the `NavigableNode` interface that allows to traverse a DAG of IPLD `Node`s with support for node promises.

License: MIT
Signed-off-by: Lucas Molas <schomatis@gmail.com>

Add BufferedDAG wrapping Batch as a DAGService.

Make Batch implement a NodeAdder interface

This adds a NodeAdder interface (which partially implements
a DAGService), and adjusts the Batch type to satisfy it.

batch: add functional opts to Batch

(address CR)

License: MIT
Signed-off-by: Adrian Lanzafame <adrianlanzafame92@gmail.com>

add copy dagservice function

close the node channel in GetMany in the test dag

Extract dagservice and friends from go-ipfs

I considered (well, implemented then threw it away) allowing contexts on all
calls to Batch (Add, Commit, etc). However, really, you should treat a batch
as a single large "operation".

I also went down the road of generalizing batches to sessions. However, it
became immediately obvious that permitting add *and* remove *and* fetch would
require a lot of bookkeeping and that you'd lose a lot of performance. So, we'll
do that separately.

We'll need these for slower/remote datastores.