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‎README.md‎

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[ ![flamebase/flamebase-database-node](https://d25lcipzij17d.cloudfront.net/badge.svg?id=js&type=6&v=1.1.0&x2=0)](https://www.npmjs.com/package/flamebase-database-node)
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[ ![flamebase/flamebase-database-node](https://d25lcipzij17d.cloudfront.net/badge.svg?id=js&type=6&v=1.2.0&x2=0)](https://www.npmjs.com/package/flamebase-database-node)
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# :fire: flamebase-database-node
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Real time JSON database (server node).
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### What is this?
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Flamebase is an open source project that tries to emulate Firebase Database features as much as possible. I like Firebase but it's expensive for what it currently offers.
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If you are doing an altruist project with Firebase, pray not to became successful, because the monthly amount will increase considerably.
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In this repo you can find the proper package for work with json db as flamebase-database-server-cluster does.
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For now it still developing, so please be patient with errors.
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### Usage
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- Import library:
@@ -68,6 +75,7 @@ FD.ref.messages[messageId] = message;
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FD.syncToDatabase();
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```
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At this point we have a JSON reference synchronized with our JSON database.
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Define some configuration properties to keep devices up to date when JSON reference changes.
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```javascript
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var config = {};

‎index.js‎

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@@ -1,9 +1,11 @@
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var JsonDB = require('node-json-db');
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var FCM = require('fcm-push');
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var diff = require('rus-diff').diff;
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var log4js = require('log4js');
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var SN = require('sync-node');
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var JsonDB = require('node-json-db');
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var FCM = require('fcm-push');
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var diff = require('rus-diff').diff;
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var log4js = require('log4js');
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var SN = require('sync-node');
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var sha1 = require('sha1');
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const TAG = "Flamebase Database";
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var logger = log4js.getLogger(TAG);
@@ -12,6 +14,7 @@ JSON.stringifyAligned = require('json-align');
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var ACTION_SIMPLE_UPDATE = "simple_update";
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var ACTION_SLICE_UPDATE = "slice_update";
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var ACTION_NO_UPDATE = "no_update";
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function FlamebaseDatabase(database, path) {
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@@ -144,8 +147,8 @@ function FlamebaseDatabase(database, path) {
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}
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}
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var data_android = this.getPartsFor(this.OS.ANDROID);
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var data_ios = this.getPartsFor(this.OS.IOS);
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var data_android = this.getPartsFor(this.OS.ANDROID, JSON.parse(this.lastStringReference), this.ref);
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var data_ios = this.getPartsFor(this.OS.IOS, JSON.parse(this.lastStringReference), this.ref);
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if (object.debugVal) {
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logger.debug("android_tokens_size: " + android_tokens.length);
@@ -225,6 +228,117 @@ function FlamebaseDatabase(database, path) {
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}
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};
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this.sendDifferencesForClient = function(before, device) {
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var ios_tokens = [];
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var android_tokens = [];
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var id = this.pushConfig.referenceId();
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var notification = this.pushConfig.notification();
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if (device.os.indexOf(this.OS.IOS) !== -1) {
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ios_tokens.push(device.token);
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} else {
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android_tokens.push(device.token);
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}
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var data_android = this.getPartsFor(this.OS.ANDROID, JSON.parse(before), this.ref);
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var data_ios = this.getPartsFor(this.OS.IOS, JSON.parse(before), this.ref);
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if (object.debugVal) {
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logger.debug("android_tokens_size: " + android_tokens.length);
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logger.debug("ios_tokens_size: " + ios_tokens.length);
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logger.debug("data_android_size: " + data_android.parts.length);
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logger.debug("data_ios_size: " + data_ios.parts.length);
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}
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this.lastStringReference = JSON.stringify(this.ref);
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if (android_tokens.length > 0) {
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if (data_android.parts.length === 1) {
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var data = {};
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data.id = id;
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data.tag = this.pushConfig.tag();
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data.reference = data_android.parts[0];
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data.action = ACTION_SIMPLE_UPDATE;
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data.size = data_android.parts.length;
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data.index = 0;
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var send = {};
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send.data = data;
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send.tokens = android_tokens;
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send.notification = notification;
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this.sendPushMessage(send);
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} else if (data_android.parts.length > 1) {
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for (var i = 0; i < data_android.parts.length; i++) {
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var dat = {};
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dat.id = id;
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dat.tag = this.pushConfig.tag();
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dat.reference = data_android.parts[i];
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dat.action = ACTION_SLICE_UPDATE;
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dat.index = i;
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dat.size = data_android.parts.length;
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var sen = {};
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sen.data = dat;
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sen.tokens = android_tokens;
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sen.notification = notification;
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this.sendPushMessage(sen);
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}
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} else {
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var data = {};
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data.id = id;
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data.tag = this.pushConfig.tag();
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data.action = ACTION_NO_UPDATE;
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var send = {};
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send.data = data;
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send.tokens = android_tokens;
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send.notification = notification;
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this.sendPushMessage(send);
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}
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}
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if (ios_tokens.length > 0) {
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if (data_ios.parts.length === 1) {
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var da = {};
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da.id = id;
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da.tag = this.pushConfig.tag();
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da.reference = data_ios.parts[0];
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da.action = ACTION_SIMPLE_UPDATE;
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da.size = data_ios.parts.length;
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da.index = 0;
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var se = {};
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se.data = da;
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se.tokens = ios_tokens;
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se.notification = notification;
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this.sendPushMessage(se);
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} else if (data_ios.parts.length > 1) {
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for (var i = 0; i < data_ios.parts.length; i++) {
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var d = {};
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d.id = id;
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d.tag = this.pushConfig.tag();
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d.reference = data_ios.parts[i];
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d.action = ACTION_SLICE_UPDATE;
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d.index = i;
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d.size = data_ios.parts.length;
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var s = {};
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s.data = d;
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s.tokens = ios_tokens;
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s.notification = notification;
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this.sendPushMessage(s);
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}
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} else {
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var data = {};
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data.id = id;
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data.tag = this.pushConfig.tag();
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data.action = ACTION_NO_UPDATE;
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var send = {};
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send.data = data;
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send.tokens = ios_tokens;
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send.notification = notification;
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this.sendPushMessage(send);
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}
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}
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};
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this.sendPushMessage = function(send) {
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this.queue.pushJob(function() {
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return new Promise(function (resolve, reject) {
@@ -255,21 +369,23 @@ function FlamebaseDatabase(database, path) {
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});
256370
};
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258-
this.getPartsFor = function(os) {
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this.getPartsFor = function(os, before, after) {
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var notification = this.pushConfig.notification();
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var notificationLength = JSON.stringify(notification).length;
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262-
var differences = JSON.stringify(diff(JSON.parse(this.lastStringReference), this.ref));
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//var differences = JSON.stringify(diff(JSON.parse(this.lastStringReference), this.ref));
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var differences = JSON.stringify(diff(before, after));
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var partsToSend = [];
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if (this.debugVal) {
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logger.debug("diff: " + differences);
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}
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269384
if (differences === "false") {
270-
var currentStringRef = JSON.stringify(this.ref);
271-
if (this.lastStringReference.length != currentStringRef.length) {
272-
logger.error("something went wrong; chars diff: " + (this.lastStringReference.length - currentStringRef.length));
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var currentStringAfter = JSON.stringify(after);
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var currentStringBefore = JSON.stringify(before);
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if (currentStringBefore.length !== currentStringAfter.length) {
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logger.error("something went wrong; sha1 diff: " + currentStringBefore.length + " - " + currentStringAfter.length);
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}
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if (this.debugVal) {
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logger.debug("no differences");

‎package.json‎

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"log4js": "^1.1.1",
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"node-json-db": "^0.7.3",
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"rus-diff": "^1.1.0",
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"sha1": "^1.1.1",
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"sync-node": ">= 1.3.1"
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},
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"description": "Realtime JSON DB",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1"
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},
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"version": "1.1.1"
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"version": "1.2.0"
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}

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