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level-rest-parser

A simple request parser that enforces REST style with schema validation. Uses a leveldb instance for data storage. See karissa/rest-parser for examples of interacting with the REST API parser.

Installation

This module is installed via npm:

$ npm install level-rest-parser

Usage

Schema Validation

Level-rest-parser validates the incoming requests pesky clients won't be able to muck up the database.

bookSchema.json

{
  "type": "object",
  "properties": {
    "author_id": {
      "type": "number",
      "required": true,
    },
    "name": {
      "type": "string",
      "required": true,
    },
    "title": {
      "type": "string",
      "required": true,
    },
    "license": {
      "type": "string"
    }
  }
}

Basic example

Set up your LevelDB

var level = require('level-prebuilt');

var db = level(dbPath,
  {
    keyEncoding: require('bytewise/hex'),
    valueEncoding: 'json'
  }
);

Create your models & rest-parser You pass the schema into your LevelRest instance and the rest parser will validate any objects before they are inserted into your leveldb

var LevelRest = require('level-rest-parser')
var RestParser = require('rest-parser')

var Book = new RestParser(LevelRest(db, {
  schema: require('./bookSchema.json')
})

var models = {
  book: Book
}

Set up the router

router.addRoute('/api/:model/:id?', function(req, res, opts) {
  var id = opts.params.id
  var opts = {
    id: id
  }1
  var model = models[opts.params.model]
  if (!model) return res.end('No model found')
  model.dispatch(req, opts, function (err, data) {
    if (err) {
      res.statusCode = 500
      return res.end()
    }

    res.statusCode = 200
    res.json(data)
  })
})

License

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.