pull initial interfaces out of go-ipfs

.travis.yml

+os:
+  - linux
+  - osx
+
+language: go
+
+go:
+    - 1.7
+
+install: true
+
+before_install:
+  - make deps
+
+script:
+  - go vet
+  - $GOPATH/bin/goveralls -service="travis-ci"
+
+cache:
+    directories:
+        - $GOPATH/src/gx
+
+notifications:
+  email: false

LICENSE

+The MIT License (MIT)
+
+Copyright (c) 2016 Jeromy Johnson
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

Makefile

+gx:
+	go get github.com/whyrusleeping/gx
+	go get github.com/whyrusleeping/gx-go
+
+covertools:
+	go get github.com/mattn/goveralls
+	go get golang.org/x/tools/cmd/cover
+
+deps: gx covertools
+	gx --verbose install --global
+	gx-go rewrite
+
+publish:
+	gx-go rewrite --undo
+

README.md

+go-ipld-node
+==================
+
+[![](https://img.shields.io/badge/made%20by-Protocol%20Labs-blue.svg?style=flat-square)](http://ipn.io)
+[![](https://img.shields.io/badge/project-IPFS-blue.svg?style=flat-square)](http://ipfs.io/)
+[![](https://img.shields.io/badge/freenode-%23ipfs-blue.svg?style=flat-square)](http://webchat.freenode.net/?channels=%23ipfs)
+[![Coverage Status](https://coveralls.io/repos/github/ipfs/go-ipld-node/badge.svg?branch=master)](https://coveralls.io/github/ipfs/go-ipld-node?branch=master)
+[![Travis CI](https://travis-ci.org/ipfs/go-ipld-node.svg?branch=master)](https://travis-ci.org/ipfs/go-ipld-node)
+
+> go-ipld-node is the official 'node' interface for ipld, the interplanetary linked data format.
+
+
+## Table of Contents
+
+- [Install](#install)
+- [Usage](#usage)
+- [API](#api)
+- [Contribute](#contribute)
+- [License](#license)
+
+## Install
+
+```sh
+make install
+```
+
+## Contribute
+
+PRs are welcome!
+
+Small note: If editing the Readme, please conform to the [standard-readme](https://github.com/RichardLitt/standard-readme) specification.
+
+## License
+
+MIT © Jeromy Johnson

node.go

+package node
+
+import (
+	"context"
+	"fmt"
+
+	cid "github.com/ipfs/go-cid"
+)
+
+type Node interface {
+	Resolve(path []string) (*Link, []string, error)
+	Tree() []string
+	Cid() *cid.Cid
+
+	Links() []*Link
+
+	//
+	Stat() (*NodeStat, error)
+	Size() (uint64, error)
+
+	// RawData marshals the node and returns the marshaled bytes
+	RawData() []byte
+
+	String() string
+	Loggable() map[string]interface{}
+}
+
+type NodeGetter interface {
+	Get(context.Context, *cid.Cid) (Node, error)
+}
+
+// Link represents an IPFS Merkle DAG Link between Nodes.
+type Link struct {
+	// utf string name. should be unique per object
+	Name string // utf8
+
+	// cumulative size of target object
+	Size uint64
+
+	// multihash of the target object
+	Cid *cid.Cid
+}
+
+// NodeStat is a statistics object for a Node. Mostly sizes.
+type NodeStat struct {
+	Hash           string
+	NumLinks       int // number of links in link table
+	BlockSize      int // size of the raw, encoded data
+	LinksSize      int // size of the links segment
+	DataSize       int // size of the data segment
+	CumulativeSize int // cumulative size of object and its references
+}
+
+func (ns NodeStat) String() string {
+	f := "NodeStat{NumLinks: %d, BlockSize: %d, LinksSize: %d, DataSize: %d, CumulativeSize: %d}"
+	return fmt.Sprintf(f, ns.NumLinks, ns.BlockSize, ns.LinksSize, ns.DataSize, ns.CumulativeSize)
+}
+
+// MakeLink creates a link to the given node
+func MakeLink(n Node) (*Link, error) {
+	s, err := n.Size()
+	if err != nil {
+		return nil, err
+	}
+
+	return &Link{
+		Size: s,
+		Cid:  n.Cid(),
+	}, nil
+}
+
+// GetNode returns the MDAG Node that this link points to
+func (l *Link) GetNode(ctx context.Context, serv NodeGetter) (Node, error) {
+	return serv.Get(ctx, l.Cid)
+}

package.json

+{
+  "author": "whyrusleeping",
+  "bugs": {
+    "url": "https://github.com/ipfs/go-ipld-node"
+  },
+  "gx": {
+    "dvcsimport": "github.com/ipfs/go-ipld-node"
+  },
+  "gxDependencies": [
+    {
+      "author": "whyrusleeping",
+      "hash": "QmXUuRadqDq5BuFWzVU6VuKaSjTcNm1gNCtLvvP1TJCW4z",
+      "name": "go-cid",
+      "version": "0.6.0"
+    }
+  ],
+  "gxVersion": "0.10.0",
+  "language": "go",
+  "license": "",
+  "name": "go-ipld-node",
+  "releaseCmd": "git commit -a -m \"gx publish $VERSION\"",
+  "version": "0.0.0"
+}
+