RICH0423’s gists

RICH0423 / Application.java

Created December 1, 2022 09:51

Spring Boot authentication with GCP OpenID

	package com.rich.gcp.app;

	import com.google.api.client.http.GenericUrl;
	import com.google.api.client.http.HttpRequest;
	import com.google.api.client.http.HttpResponse;
	import com.google.api.client.http.HttpTransport;
	import com.google.api.client.http.javanet.NetHttpTransport;
	import com.google.api.gax.core.CredentialsProvider;
	import com.google.auth.http.HttpCredentialsAdapter;
	import com.google.auth.oauth2.GoogleCredentials;

RICH0423 / postgre-check-connection.py

Last active April 6, 2022 06:37

Testing PostgreSQL connection with Python

	import psycopg2

	#establishing the connection
	conn = psycopg2.connect(
	database="postgres", user='postgres', password='12345678', host='127.0.0.1', port= '5432'
	)
	#Creating a cursor object using the cursor() method
	cursor = conn.cursor()

	#Executing an MYSQL function using the execute() method

RICH0423 / run_redis.sh

Created February 14, 2022 03:45

run Redis and set password in docker for dev env

	docker run -d \
	-h redis \
	-e REDIS_PASSWORD=passw0rd \
	-v redis-data:/data \
	-p 6379:6379 \
	--name redis \
	--restart always \
	redis:6.2.6-alpine /bin/sh -c 'redis-server --appendonly yes --requirepass ${REDIS_PASSWORD}'

RICH0423 / WordCount.java

Created May 4, 2020 03:19

implement a simple WordCount program using the high-level Kafka Streams DSL

	package com.rich.stream.example;

	import org.apache.kafka.common.serialization.Serdes;
	import org.apache.kafka.common.utils.Bytes;
	import org.apache.kafka.streams.KafkaStreams;
	import org.apache.kafka.streams.StreamsBuilder;
	import org.apache.kafka.streams.StreamsConfig;
	import org.apache.kafka.streams.Topology;
	import org.apache.kafka.streams.kstream.KeyValueMapper;
	import org.apache.kafka.streams.kstream.Materialized;

RICH0423 / fibonacci.go

Created July 31, 2019 07:36

Implement Fibonacci sequence with GO closure

	package main

	import (
	"fmt"
	)

	// fibonacci is a function that returns
	// a function that returns an int.
	func fibonacci() func() int {
	prev1, prev2 := 0, 1

RICH0423 / nginx-deployment.yaml

Created July 11, 2019 06:45

Run a Nginx application on K8S (using Minikube)

	apiVersion: apps/v1
	kind: Deployment
	metadata:
	name: nginx-deployment # Deployment name
	spec:
	selector: # defines how the Deployment finds which Pods to manage
	matchLabels:
	app: nginx
	replicas: 2
	template: # The Pods are labeled app:nginx using the labels field

RICH0423 / Array2ListDemo.java

Created February 2, 2018 06:07

Program to Convert 'int' Array to 'List' of Integer

	import java.util.Arrays;
	import java.util.List;
	import java.util.stream.Collectors;
	import java.util.stream.IntStream;

	public class Array2ListDemo {

	public static void main(String[] args) {

	/** Converting a Primitive 'int' Array to List **/

RICH0423 / WebSecurityConfig.java

Created January 31, 2018 09:31

CORS filter in Spring Security, ref: https://docs.spring.io/spring-security/site/docs/current/reference/html/cors.html

	@EnableWebSecurity
	public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

	@Override
	protected void configure(HttpSecurity http) throws Exception {
	http
	// by default uses a Bean by the name of corsConfigurationSource
	.cors().and()
	...
	}

RICH0423 / Main.java

Created January 24, 2018 03:38

Converting Collection to Map with JDK 8 Collectors

	package com.example;

	import static java.lang.System.out;

	import java.util.*;
	import java.util.function.BinaryOperator;
	import java.util.stream.Collectors;

	public class Main {

RICH0423 / Main.java

Last active January 24, 2018 02:20

Sorting with JDK 8 Comparator interface

	import static java.lang.System.out;

	import java.util.ArrayList;
	import java.util.Comparator;
	import java.util.List;
	import java.util.stream.Collectors;

	public class Main {

	private static List<Song> generateSongs() {

Rich RICH0423