djodjoni

import com.fasterxml.jackson.annotation.JsonProperty
import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper

fun main(args: Array<String>) {
//    val mapper = ObjectMapper().registerModule(KotlinModule())
//    val mapper = ObjectMapper().registerKotlinModule()
    val mapper = jacksonObjectMapper()
    val writer = mapper.writerWithDefaultPrettyPrinter()

    val json1 = writer.writeValueAsString(Data1(1, "Foo", "Bar"))

djodjoni

Kafka Topics

List existing topics

bin/kafka-topics.sh --zookeeper localhost:2181 --list

Describe a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --describe --topic mytopic

Purge a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic mytopic --config retention.ms=1000

... wait a minute ...

djodjoni

// Note: only for modern browser
import axios from 'axios'

// helper function: generate a new file from base64 String
const dataURLtoFile = (dataurl, filename) => {
  const arr = dataurl.split(',')
  const mime = arr[0].match(/:(.*?);/)[1]
  const bstr = atob(arr[1])
  let n = bstr.length
  const u8arr = new Uint8Array(n)

djodjoni

<style>
  input[type="file"]{
    position: absolute;
    top: -500px;
  }

  div.file-listing{
    width: 200px;
  }

djodjoni

Vue + Firebase + Auth Demo

A simple App using Vue.js & Firebase with Auth.

See the DEMO.

djodjoni

package com.usehomeroom.vasuki.data;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fernandocejas.arrow.optional.Optional;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;

djodjoni

// Foundation and Chosen CSS Merger
// ZURB Foundation v5 - Harvest Chosen v1.1
// Add to the bottom of foundation_and_overrides.scss: `@import 'foundation-chosen';`

$chosen-form-spacing: $form-spacing / 4 + rem-calc(1)
$chosen-input-height: ($input-font-size + ($form-spacing * 1.5) - rem-calc(1))
$chosen-input-height-multi: ($input-font-size + ($form-spacing * 1.5) - rem-calc(5))
$chosen-border-radius: 0
$chosen-highlighted: $primary-color

djodjoni

// Foundation and Chosen CSS Merger
// ZURB Foundation v5 - Harvest Chosen v1.1
// Add to the bottom of foundation_and_overrides.scss: `@import 'foundation-chosen';`

$chosen-form-spacing: $form-spacing / 4 + rem-calc(1)
$chosen-input-height: ($input-font-size + ($form-spacing * 1.5) - rem-calc(1))
$chosen-input-height-multi: ($input-font-size + ($form-spacing * 1.5) - rem-calc(5))
$chosen-border-radius: 0
$chosen-highlighted: $primary-color

djodjoni

resource "digitalocean_droplet" "kafka" {
    image = "ubuntu-14-04-x64"
    name = "${var.machine_name}"
    region = "nyc2"
    size = "4gb"
    private_networking = true
    ssh_keys = [
      "${var.ssh_fingerprint}"
    ]