/
request_handlers.js
165 lines (152 loc) · 5.45 KB
/
request_handlers.js
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var async = require('async')
var events = require('events')
var db = require(__dirname + '/appbase_redis')
db.connect(6379, '127.0.0.1')
var event_handler = require(__dirname + '/event_handler')
event_handler.connect(6379, '127.0.0.1', db)
request_handlers = {}
request_handlers.notFound = function notFound(request, reply) {
return reply({
"message": "This is not a valid API call"
}).code(404)
}
var resultHandler = function resultHandler(err, result, reply) {
if (err) {
var code = 500
if (err.status_code) {
code = err.status_code
delete err.status_code
}
return reply(err).code(code)
} else {
reply(result)
}
}
request_handlers.listCollections = function listCollections(request, reply) {
async.waterfall([
db.getCollections,
], function(err, result) {
resultHandler(err, result, reply)
})
}
request_handlers.createCollection = function createCollection(request, reply) {
async.waterfall([
function(callback) {
db.createCollection(request.params.collection, callback)
},
], function(err, result) {
resultHandler(err, result, reply)
})
}
request_handlers.deleteCollection = function deleteCollection(request, reply) {
async.waterfall([
function(callback) {
db.deleteCollection(request.params.collection, callback)
},
], function(err, result) {
resultHandler(err, result, reply)
})
}
request_handlers.createDocument = function createDocument(request, reply) {
if ( !(request.payload && typeof(request.payload) == 'object') ) {
var err = new Error("Request body is not JSON")
err.status_code = 400
return resultHandler(err, null, reply)
}
var body = request.payload
var id = body._id
delete body._id
delete body._collection
delete body._timestamp
async.waterfall([
function(callback) {
db.createDocument(request.params.collection, id, body, callback)
},
], function(err, result) {
resultHandler(err, result, reply)
})
}
request_handlers.getCollection = function getCollection(request, reply) {
async.waterfall([
function(callback) {
db.getCollection(request.params.collection, callback)
},
], function(err, result) {
resultHandler(err, result, reply)
})
}
request_handlers.getDocument = function getDocument(request, reply) {
async.waterfall([
function(callback) {
var edgepath = db._pathResolution(request.params.edgepath)
db.traverse(request.params.collection, request.params.rootdoc, edgepath, callback)
},
function(collection_name_temp, name_temp, callback) {
collection_name = collection_name_temp
name = name_temp
var timestamp = -1
if (!isNaN(request.query.timestamp)) {
timestamp = parseInt(request.query.timestamp)
}
var references = true
if (request.query.references == "false") {
references = false
}
db.getDocument(collection_name, name, references, timestamp, callback)
}
], function(err, result) {
if (err) {
resultHandler(err, result, reply)
} else if (request.query.stream == "true") {
var listen = new events.EventEmitter();
request.raw.res.writeHead(200, { 'transfer-encoding': 'chunked', 'content-type': 'application/json; charset=utf-8', 'connection': 'keep-alive', 'cache-control': 'no-cache' })
event_handler.receive_events(collection_name, name, "", listen, function(err, data) {
if (data) {
request.raw.res.write(JSON.stringify(data) + "\n")
}
})
request.raw.res.write(JSON.stringify(result) + "\n")
request.raw.res.on('close', function() {
listen.emit('off')
})
} else {
resultHandler(err, result, reply)
}
})
}
request_handlers.updateDocument = function updateDocument(request, reply) {
var collection_name, name
async.waterfall([
function(callback) {
var edgepath = db._pathResolution(request.params.edgepath)
db.traverse(request.params.collection, request.params.rootdoc, edgepath, callback)
},
function(collection_name_temp, name_temp, callback) {
collection_name = collection_name_temp
name = name_temp
var body = request.payload
delete body._id
delete body._collection
delete body._timestamp
db.updateDocument(collection_name, name, body, callback)
}
], function(err, result) {
event_handler.send_event(collection_name, name, result)
resultHandler(err, result, reply)
})
}
request_handlers.deleteDocument = function deleteDocument(request, reply) {
async.waterfall([
function(callback) {
var edgepath = db._pathResolution(request.params.edgepath)
db.traverse(request.params.collection, request.params.rootdoc, edgepath, callback)
},
function(collection_name, name, callback) {
db.deleteDocument(collection_name, name, callback)
}
], function(err, result) {
event_handler.send_event(collection_name, name, result)
resultHandler(err, result, reply)
})
}
module.exports = request_handlers