squeezenode-auth
Version:
Node.js wrapper library for squeezebox CLI/json interface with Spotify/SoundCloud support
222 lines (183 loc) • 7.62 kB
JavaScript
/*
The MIT License (MIT)
Copyright (c) 2013-2015 Piotr Raczynski, pio[dot]raczynski[at]gmail[dot]com
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.
*/
var jayson = require('jayson');
var inherits = require('super');
var AWS;
function SqueezeRequest(address, port, username, password) {
this.address = (address !== undefined) ? address : "localhost";
this.port = (port !== undefined) ? port : 9000;
this.username = username;
this.password = password;
var jsonrpc = this.address + ':' + this.port + '/jsonrpc.js';
var client = (this.address.substr(0, 5) === 'https') ? jayson.client.https(jsonrpc) : client = jayson.client.http(jsonrpc);
client.options.version = 1;
this.queue = [];
this.id = "squeezenode." + process.pid;// FIXME lamba seems to be 1 always add instance?
var that = this;
/**
* Function to handle responses
*
* @param err An error message
* @param reply The reply
* @param callback The function to call with the result
*/
function handle(err, reply, callback) {
var result = {};
if (err) {
result = err;
result.ok = false;
} else {
result = reply;
result.ok = true;
}
if (callback)
callback(result);
}
// Set up to use an AWS SQS queue to communicate
if (port == 'aws') {
AWS = require('aws-sdk');
this.request = request_sqs;
this.sqs = new AWS.SQS({region: 'us-west-2'});
this.sendq = {QueueUrl: password.send, MessageGroupId: this.id};
this.recvq = {QueueUrl: password.recv, WaitTimeSeconds: 0, MaxNumberOfMessages: 10};
this.reciving = true
this.sqs.receiveMessage(that.recvq, function (err, reply) {
that.recvq.MaxNumberOfMessages = 1;
that.recvq.WaitTimeSeconds = 20;
if (reply.Messages) {
var msg = reply.Messages.pop();
while (msg) {
var deleteParams = {
QueueUrl: that.recvq.QueueUrl,
ReceiptHandle: msg.ReceiptHandle
};
that.sqs.deleteMessage(deleteParams, function (err, data) {
});
msg = reply.Messages.pop();
}
}
request_sqs_dispatch_queue();
}); //Drain Q.
} else {
// Use JSON RPC to communicate
this.request = request_rpc;
// Add a header for basic authentication if a username and password are given
if (username && password) {
if (!client.options.headers)
client.options.headers = {};
client.options.headers['Authorization'] = formatBasicHeader(username, password);
}
}
/**
* Request function for JSON RPC
*
* @param player The target player
* @param params Request parameters
* @param callback The function to call with the result
*/
function request_rpc(player, params, callback) {
client.request('slim.request', [player, params], that.id, function (err, reply) {
handle(err, reply, callback);
});
}
/**
* Request function to use AWS SQS
*
* @param player The target player
* @param params Request parameters
* @param callback The function to call with the result
*/
function request_sqs_dispatch(player, params, callback) {
that.sendq['MessageBody'] = JSON.stringify({
"params": [player, params],
"id": that.id,
"version": "1.0",
"method": "slim.request"
}); // FIXME id not on pid but an uuid? for instrance from env?
that.sendq['MessageDeduplicationId'] = that.sendq.MessageGroupId + process.hrtime();
//console.log("send ",that.sendq['MessageBody']);
that.sqs.sendMessage(that.sendq, function (err, data) {
if (err) {
handle(err, data, callback);
console.error("Send Error ", err);
} else {
// successful response - callback for reply
that.reciving = true;
that.sqs.receiveMessage(that.recvq, function (err, reply) {
//console.log("reply data ",reply);
var message_data = {};
if (reply.Messages) {
//id check?
message_data = reply.Messages.pop();
//delete and drain?
var msg = message_data;
message_data = JSON.parse(message_data.Body);
//console.log("reply ",message_data);
while (msg) {
var deleteParams = {
QueueUrl: that.recvq.QueueUrl,
ReceiptHandle: msg.ReceiptHandle
};
// FIXME delete error
that.sqs.deleteMessage(deleteParams, function (err, data) {
if (err) {
console.error("Delete Error", err);
} else {
//console.log("Message Deleted", data);
}
});
msg = reply.Messages.pop();
}
} else {
console.warn("no msgs ", err);
err = "No reply message recvied";
}
handle(err, message_data, callback);
request_sqs_dispatch_queue();
});
}
});
}
// We need to serialise requests and responces for queue use
function request_sqs(player, params, callback) {
if (that.reciving) {
that.queue.push([player, params, callback]);
} else {
request_sqs_dispatch(player, params, callback);
}
}
function request_sqs_dispatch_queue() {
var args = that.queue.pop();
if (args) {
request_sqs_dispatch.apply(null, args);
} else {
that.reciving = false;
}
}
}
/**
* Function to format the header for basic authentication.
*/
function formatBasicHeader(username, password) {
var tok = username + ':' + password;
var hash = new Buffer(tok).toString('base64');
return "Basic " + hash;
}
module.exports = SqueezeRequest;