Serve a JSON file as a file system over 9P
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Latest commit 9d2350d Sep 12, 2016

README.md

WORK IN PROGRESS

This is a demo/toy program to test the implementation and performance of the net/styx package, which itself is a work in progress. If you are having trouble getting things to work, ensure you have checked out the latest version of the aqwari.net/net/styx package.

BUILD

go build

USE

Start jsonfs on port 5640:

./jsonfs -a localhost:5640 example.json

Using plan9port's 9pfuse utility, mount the fs:

9pfuse localhost:5640 /mnt/jsonfs

If you have a recent (2.6+) linux kernel, you can mount using the kernel's v9fs implementation. Unfortunately you'll need root access to do so without modifying /etc/fstab:

sudo modprobe 9p
sudo mount -t 9p -o \
	tcp,name=`whoami`,uname=`whoami`,port=5640 \
	127.0.0.1 /mnt/jsonfs

Try looking around

$ ls /mnt/jsonfs
apiVersion data
$ cat /mnt/jsonfs/apiVersion
2.0

You should see output from jsonfs, such as

accepted connection from 127.0.0.1:36602
→ 65535 Tversion msize=8192 version="9P2000"
← 65535 Rversion msize=8192 version="9P2000"
→ 000 Tattach fid=1 afid=NOFID uname="droyo" aname=""
← 000 Rattach qid="type=128 ver=0 path=1"
→ 000 Twalk fid=1 newfid=2 "apiVersion"
← 000 Rwalk wqid="type=0 ver=0 path=2"
→ 000 Topen fid=2 mode=0
← 000 Ropen qid="type=0 ver=0 path=2" iounit=0
→ 000 Tread fid=2 offset=0 count=8168
← 000 Rread count=3
→ 000 Tread fid=2 offset=3 count=8168
← 000 Rread count=0

When using example.json, the tree hierarchy should look something like this:

$ tree /mnt/jsonfs
/mnt/jsonfs
├── apiVersion
└── data
    ├── items
    │   └── 0
    │       ├── accessControl
    │       │   ├── comment
    │       │   ├── commentVote
    │       │   ├── embed
    │       │   ├── list
    │       │   ├── rate
    │       │   ├── syndicate
    │       │   └── videoRespond
    │       ├── aspectRatio
    │       ├── category
    │       ├── commentCount
    │       ├── content
    │       │   ├── 1
    │       │   ├── 5
    │       │   └── 6
    │       ├── description
    │       ├── duration
    │       ├── favoriteCount
    │       ├── id
    │       ├── player
    │       │   └── default
    │       ├── rating
    │       ├── ratingCount
    │       ├── status
    │       │   ├── reason
    │       │   └── value
    │       ├── tags
    │       │   ├── 0
    │       │   ├── 1
    │       │   └── 2
    │       ├── thumbnail
    │       │   ├── default
    │       │   └── hqDefault
    │       ├── title
    │       ├── updated
    │       ├── uploaded
    │       ├── uploader
    │       └── viewCount
    ├── itemsPerPage
    ├── startIndex
    ├── totalItems
    └── updated