aramkumar06

const http = require("http");
const https = require("https");
const AWS = require('aws-sdk');
const formidable = require("formidable");
const uuid = require("uuid");

let server = http.createServer(launch);
let s3 = new AWS.S3({
 // s3 credentials
});

aramkumar06

// Test this by running the code snippet below and then
// use the "Offline" checkbox in DevTools Network panel

window.addEventListener('online', handleConnection);
window.addEventListener('offline', handleConnection);

function handleConnection() {
  if (navigator.onLine) {
    isReachable(getServerUrl()).then(function(online) {
      if (online) {

aramkumar06

const items = json3.items
const replacer = (key, value) => value === null ? '' : value // specify how you want to handle null values here
const header = Object.keys(items[0])
let csv = items.map(row => header.map(fieldName => JSON.stringify(row[fieldName], replacer)).join(','))
csv.unshift(header.join(','))
csv = csv.join('\r\n')

console.log(csv)

aramkumar06

import { Injectable } from '@angular/core';
import { HttpErrorResponse, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/mergeMap';

import { AuthService } from './auth.service';

@Injectable()
export class TokenInterceptor implements HttpInterceptor {

aramkumar06

/*This function serves as the core of our DB layer
This will generate a SQL query and execute it whilest returning the response prematurely
@param obj:{Object} this is the options object that contain all of the query options
@return Promise{Object}: returns a promise that will be reject or resolved based on the outcome of the query
The reasoning behind this kind of logic is that we want to abstract our layer as much as possible, if evne the slightest 
sytnax change occurs in the near future, we can easily update all our code by updating this one
We are using knex as a query builder and are thus relying on Knex to communicate with our DB*/
/*Can also be used to build custom query functions from a data.service. This way our database service will remain
unpolluted from many different functions and logic will be contained in a BLL*/
/* All available options

aramkumar06

# Optimizing postgresql table for more than 100K inserts per second

* Create `UNLOGGED` table. This reduces the amount of data written to persistent storage by up to 2x.
* Set `WITH (autovacuum_enabled=false)` on the table. This saves CPU time and IO bandwidth
  on useless vacuuming of the table (since we never `DELETE` or `UPDATE` the table).
* Insert rows with `COPY FROM STDIN`. This is the fastest possible approach to insert rows into table.
* Minimize the number of indexes in the table, since they slow down inserts. Usually an index
  on `time timestamp with time zone` is enough.
* Add `synchronous_commit = off` to `postgresql.conf`.
* Use table inheritance for fast removal of old data:

aramkumar06

#Login as root
sudo su

#create jdk directory
mkdir /opt/jdk

#uncompress, change to your file name
tar -zxf jdk-8u5-linux-x64.tar.gz -C /opt/jdk

#check if files are there

aramkumar06

version: '2'
services:
    myapp:
        build: .
        container_name: "myapp"
        image: debian/latest
        environment:
            - NODE_ENV=development
            - FOO=bar
        volumes:

aramkumar06

https://github.com/cloudfoundry/uaa

http://docs.cloudfoundry.org/api/uaa/version/74.4.0/index.html#overview

https://docs.cloudfoundry.org/concepts/architecture/uaa.html

https://www.baeldung.com/cloud-foundry-uaa

React
https://medium.com/@thechrisbull/4-different-kinds-of-components-creating-a-react-ui-component-framework-saga-a-designer-9043c0cc597

aramkumar06

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 9DA31620334BD75D9DCB49F368818C72E52529D4

## Ubuntu 18
echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.0.list

## Ubuntu 16
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/4.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.0.list

## Ubuntu 14
echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/4.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.0.list