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‎.gitignore

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!.mvn/wrapper/
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!**/src/main/**
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!**/src/test/**
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target/
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### STS ###
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.apt_generated
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.classpath
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.factorypath
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.project
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.settings
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.springBeans
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.sts4-cache
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### IntelliJ IDEA ###
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.idea
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*.iws
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*.iml
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*.ipr
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### NetBeans ###
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/nbproject/private/
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/nbbuild/
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/dist/
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/nbdist/
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/.nb-gradle/
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build/
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### VS Code ###
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.vscode/

‎.mvn/wrapper/MavenWrapperDownloader.java

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/*
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* Copyright 2007-present the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import java.net.*;
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import java.io.*;
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import java.nio.channels.*;
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import java.util.Properties;
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public class MavenWrapperDownloader {
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private static final String WRAPPER_VERSION = "0.5.5";
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/**
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* Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
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*/
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private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
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+ WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
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/**
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* Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
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* use instead of the default one.
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*/
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private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
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".mvn/wrapper/maven-wrapper.properties";
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/**
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* Path where the maven-wrapper.jar will be saved to.
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*/
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private static final String MAVEN_WRAPPER_JAR_PATH =
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".mvn/wrapper/maven-wrapper.jar";
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/**
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* Name of the property which should be used to override the default download url for the wrapper.
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*/
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private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
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public static void main(String args[]) {
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System.out.println("- Downloader started");
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File baseDirectory = new File(args[0]);
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System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
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// If the maven-wrapper.properties exists, read it and check if it contains a custom
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// wrapperUrl parameter.
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File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
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String url = DEFAULT_DOWNLOAD_URL;
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if(mavenWrapperPropertyFile.exists()) {
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FileInputStream mavenWrapperPropertyFileInputStream = null;
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try {
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mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
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Properties mavenWrapperProperties = new Properties();
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mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
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url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
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} catch (IOException e) {
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System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
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} finally {
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try {
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if(mavenWrapperPropertyFileInputStream != null) {
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mavenWrapperPropertyFileInputStream.close();
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}
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} catch (IOException e) {
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// Ignore ...
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}
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}
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}
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System.out.println("- Downloading from: " + url);
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File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
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if(!outputFile.getParentFile().exists()) {
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if(!outputFile.getParentFile().mkdirs()) {
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System.out.println(
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"- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
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}
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}
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System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
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try {
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downloadFileFromURL(url, outputFile);
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System.out.println("Done");
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System.exit(0);
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} catch (Throwable e) {
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System.out.println("- Error downloading");
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e.printStackTrace();
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System.exit(1);
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}
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}
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private static void downloadFileFromURL(String urlString, File destination) throws Exception {
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if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
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String username = System.getenv("MVNW_USERNAME");
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char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
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Authenticator.setDefault(new Authenticator() {
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@Override
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protected PasswordAuthentication getPasswordAuthentication() {
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return new PasswordAuthentication(username, password);
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}
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});
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}
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URL website = new URL(urlString);
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ReadableByteChannel rbc;
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rbc = Channels.newChannel(website.openStream());
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FileOutputStream fos = new FileOutputStream(destination);
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fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
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fos.close();
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rbc.close();
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}
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}

‎.mvn/wrapper/maven-wrapper.jar

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‎.mvn/wrapper/maven-wrapper.properties

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distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.2/apache-maven-3.6.2-bin.zip
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wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.5/maven-wrapper-0.5.5.jar

‎.travis.yml

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notifications:
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email: false
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language: java
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rvm: 2.6.4
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python: 3
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service:
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- docker
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addons:
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apt:
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update: true
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packages:
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- sudo
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- lsof
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- wget
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- bash
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- curl
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- jq
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- python3-dev
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- python3-pip
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- python3-six
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- python3-setuptools
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- docker-ce
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install: true
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before_install:
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- export PATH=$HOME/.local/bin:$PATH
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- pip3 install --user $(whoami) --upgrade pip >/dev/null # pip3 -> pip
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- pip install --user $(whoami) --upgrade docker-compose httpie >/dev/null 2>&1
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#- http --version --debug
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#- docker-compose -v
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- source <(curl -s https://raw.githubusercontent.com/daggerok/bash-functions/master/main.bash)
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- stop_any 80 8080 5432
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stages:
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- test
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- deploy
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jobs:
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include:
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- stage: test
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jdk: openjdk8
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name: tests jdk8
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script:
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- cd $TRAVIS_BUILD_DIR && ./mvmw
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- java -jar webapp/target/*.jar &
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- wait_for 8080
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- http get :8080
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- http post :8080/maksimko
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- stop_any 80 8080
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- stage: test
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jdk: openjdk11
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name: tests jdk11
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script:
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- cd $TRAVIS_BUILD_DIR && ./mvmw
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- java -jar webapp/target/*.jar &
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- wait_for 8080
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- http get :8080
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- http post :8080/maksimko
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- stop_any 80 8080
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- stage: test
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jdk: openjdk11
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name: tests jdk11
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script:
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- cd $TRAVIS_BUILD_DIR && ./mvmw
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- docker build -t daggerok/webapp -f docker/Dockerfile webapp
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- docker run -i --rm --name run-webapp -p 8080:8080 daggerok/webapp &
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- docker logs -f -t run-webapp &
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- wait_for 8080
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- http get :8080
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- http post :8080/maksimko
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- docker rm -f -v run-webapp
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# - stage: deploy
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# jdk: openjdk8
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# rvm: 2.6.4
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# name: Gradle Reckon Tag Github and Jekyll GitHub Pages
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# script: ./gradlew --stop
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# env:
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# - secure: "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"
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# before_deploy:
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# - if [ "$TRAVIS_PULL_REQUEST" != "false" ] && [ "$TRAVIS_BRANCH" != "master" ] ; then exit 0 ; fi
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# - export GITHUB_AUTH="-Dorg.ajoberstar.grgit.auth.password=${GITHUB_PASSWORD} -Dorg.ajoberstar.grgit.auth.username=daggerok"
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# - set -e
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# - ./gradlew bundle
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# - ./gradlew bundle-exec-just-the-docs-rake-search-init
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# - ./gradlew bundle-exec-jekyll-build
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# deploy:
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# - provider: script
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# skip_cleanup: true
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# script: bash -c './gradlew ${GITHUB_AUTH} reckonTagPush -Preckon.stage=final'
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# on:
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# branch: master
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# condition: "$TRAVIS_PULL_REQUEST == false"
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# - provider: pages
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# skip-cleanup: true
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# github-token: "$GITHUB_TOKEN"
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# keep-history: true
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# local-dir: docs/_site
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# target_branch: gh-pages
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# on:
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# branch: master
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# condition: "$TRAVIS_PULL_REQUEST == false"
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cache:
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pip: true
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packages: true
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directories:
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- ~/.m2

‎README.md

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# nginx-reverse-proxy-in-k8s-in-docker
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Example of nginx reverse proxy in k8s in Docker for Mac (Windows)
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## Table of content
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* [local development](#local-development)
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** [build locally](#build-locally)
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** [run locally](#run-locally)
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** [run tests](#run-tests)
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* [docker development](#docker-development)
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** [build docker image](#build-docker-image)
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** [run in docker](#run-in-docker)
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* [k8s](#k8s)
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## local development
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### build locally
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```shell script
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./mvnw
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```
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### run locally
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```shell script
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java -jar webapp/target/*.jar
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```
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### run tests
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```shell script
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http get :8080
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http post :8080/maksimko
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```
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## docker development
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### build docker image
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```shell script
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docker build -t daggerok/webapp -f docker/Dockerfile webapp
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```
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### run in docker
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```shell script
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docker run -i --rm --name native-app -p 8080:8080 daggerok/webapp
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```
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### k8s
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TODO: implement me please...
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## resources
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* [YouTube: Transform a Legacy Application with Kubernetes and Istio - David Gageot](https://www.youtube.com/watch?v=6jBetJgluEE&list=UUCBVCTuk6uJrN3iFV_3vurg&index=5)

‎docker/Dockerfile

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FROM openjdk:14-ea-12-jdk-alpine3.10
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LABEL MAINTAINER='Maksim Kostromin https://github.com/daggerok/nginx-reverse-proxy-in-k8s-in-docker'
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RUN apk --no-cache --update add busybox-suid curl unzip sudo openssh-client shadow wget \
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&& adduser -h /home/app.user -s /bin/bash -D -u 1025 app.user wheel \
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&& echo "app.user ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers \
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&& sed -i "s/.*requiretty$/Defaults !requiretty/" /etc/sudoers \
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&& apk del busybox-suid unzip sudo openssh-client shadow wget \
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&& rm -rf /var/cache/apk/* /tmp/*
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USER app.user
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WORKDIR /home/app.user
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VOLUME /home/app.user
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EXPOSE 8080
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ENTRYPOINT java -Djava.net.preferIPv4Stack=true \
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-XX:+UnlockExperimentalVMOptions \
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-XshowSettings:vm \
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-jar ./app.jar
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CMD /bin/ash
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EXPOSE 8080
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HEALTHCHECK --timeout=1s \
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--retries=35 \
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CMD curl -f http://127.0.0.1:8080/actuator/health || exit 1
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COPY --chown=app.user target/*.jar ./app.jar

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