go-dagwriter

DagWriter is the glue for mutating (adding, removing) ipld nodes in a block service.

Usage

import (
    "context"

    "github.com/ipfs/go-dagwriter"
    "github.com/ipld/go-ipld-prime"
    cidlink "github.com/ipld/go-ipld-prime/linking/cid"
    "github.com/ipfs/go-cid"
)

...
linkPrototype := cidlink.LinkPrototype{cid.Prefix{
    Version: 1, Codec: 0x71, MhType: 0x17, MhLength: 20,
}}

writer := dagwriter.NewDagWriter(blockService)

// Store ipldNode in the block service
link, err := writer.Store(ipld.LinkContext{}, linkPrototype, ipldNode)
if err != nil {
    panic(err)
}
...

// Remove the node from the block service.
if err := writer.Delete(context.Background(), link); err != nil {
    panic(err)
}

Contribute

PRs are welcome!

License

The go-dagwriter project is dual-licensed under Apache 2.0 and MIT terms:

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)