Repository: dockersamples/k8s-wordsmith-demo
Branch: main
Commit: 23c61bba9a4c
Files: 20
Total size: 34.2 KB
Directory structure:
gitextract_78thyfox/
├── .github/
│ ├── dependabot.yml
│ └── workflows/
│ ├── call-docker-build-api.yaml
│ └── call-docker-build-web.yaml
├── LICENSE
├── README.md
├── api/
│ ├── .dockerignore
│ ├── Dockerfile
│ ├── pom.xml
│ └── src/
│ └── main/
│ └── java/
│ └── Main.java
├── db/
│ └── words.sql
├── docker-compose.yml
├── k8s-manifests/
│ ├── api.yaml
│ ├── db.yaml
│ └── web.yaml
├── kustomization.yaml
└── web/
├── Dockerfile
├── dispatcher.go
└── static/
├── app.js
├── index.html
└── style.css
================================================
FILE CONTENTS
================================================
================================================
FILE: .github/dependabot.yml
================================================
version: 2
updates:
# Maintain dependencies for GitHub Actions
- package-ecosystem: "github-actions"
directory: "/"
schedule:
interval: "monthly"
================================================
FILE: .github/workflows/call-docker-build-api.yaml
================================================
name: Build API
# template source: https://github.com/dockersamples/.github/blob/main/templates/call-docker-build.yaml
on:
# we want pull requests so we can build(test) but not push to image registry
push:
branches:
- 'main'
# only build when important files change
paths:
- 'api/**'
- '.github/workflows/call-docker-build-api.yaml'
pull_request:
branches:
- 'main'
# only build when important files change
paths:
- 'api/**'
- '.github/workflows/call-docker-build-api.yaml'
jobs:
call-docker-build:
name: API Call Docker Build
uses: dockersamples/.github/.github/workflows/reusable-docker-build.yaml@main
permissions:
contents: read
packages: write # needed to push docker image to ghcr.io
pull-requests: write # needed to create and update comments in PRs
secrets:
# Only needed if with:dockerhub-enable is true below
dockerhub-username: ${{ secrets.DOCKERHUB_USERNAME }}
# Only needed if with:dockerhub-enable is true below
dockerhub-token: ${{ secrets.DOCKERHUB_TOKEN }}
with:
### REQUIRED
### ENABLE ONE OR BOTH REGISTRIES
### tell docker where to push.
### NOTE if Docker Hub is set to true, you must set secrets above and also add account/repo/tags below
dockerhub-enable: true
ghcr-enable: true
### REQUIRED
### A list of the account/repo names for docker build. List should match what's enabled above
### defaults to:
image-names: |
ghcr.io/dockersamples/wordsmith-api
dockersamples/wordsmith-api
dockersamples/k8s-wordsmith-api
### REQUIRED set rules for tagging images, based on special action syntax:
### https://github.com/docker/metadata-action#tags-input
### defaults to:
tag-rules: |
type=raw,value=latest,enable=${{ endsWith(github.ref, github.event.repository.default_branch) }}
type=ref,event=pr
### path to where docker should copy files into image
### defaults to root of repository (.)
context: api
### Dockerfile alternate name. Default is Dockerfile (relative to context path)
# file: Containerfile
### build stage to target, defaults to empty, which builds to last stage in Dockerfile
# target:
### platforms to build for, defaults to linux/amd64
### other options: linux/amd64,linux/arm64,linux/arm/v7
platforms: linux/amd64,linux/arm64
### Create a PR comment with image tags and labels
### defaults to false
# comment-enable: false
================================================
FILE: .github/workflows/call-docker-build-web.yaml
================================================
name: Build Web
# template source: https://github.com/dockersamples/.github/blob/main/templates/call-docker-build.yaml
on:
# we want pull requests so we can build(test) but not push to image registry
push:
branches:
- 'main'
# only build when important files change
paths:
- 'web/**'
- '.github/workflows/call-docker-build-web.yaml'
pull_request:
branches:
- 'main'
# only build when important files change
paths:
- 'web/**'
- '.github/workflows/call-docker-build-web.yaml'
jobs:
call-docker-build:
name: Web Call Docker Build
uses: dockersamples/.github/.github/workflows/reusable-docker-build.yaml@main
permissions:
contents: read
packages: write # needed to push docker image to ghcr.io
pull-requests: write # needed to create and update comments in PRs
secrets:
# Only needed if with:dockerhub-enable is true below
dockerhub-username: ${{ secrets.DOCKERHUB_USERNAME }}
# Only needed if with:dockerhub-enable is true below
dockerhub-token: ${{ secrets.DOCKERHUB_TOKEN }}
with:
### REQUIRED
### ENABLE ONE OR BOTH REGISTRIES
### tell docker where to push.
### NOTE if Docker Hub is set to true, you must set secrets above and also add account/repo/tags below
dockerhub-enable: true
ghcr-enable: true
### REQUIRED
### A list of the account/repo names for docker build. List should match what's enabled above
### defaults to:
image-names: |
ghcr.io/dockersamples/wordsmith-web
dockersamples/wordsmith-web
dockersamples/k8s-wordsmith-web
### REQUIRED set rules for tagging images, based on special action syntax:
### https://github.com/docker/metadata-action#tags-input
### defaults to:
tag-rules: |
type=raw,value=latest,enable=${{ endsWith(github.ref, github.event.repository.default_branch) }}
type=ref,event=pr
### path to where docker should copy files into image
### defaults to root of repository (.)
context: web
### Dockerfile alternate name. Default is Dockerfile (relative to context path)
# file: Containerfile
### build stage to target, defaults to empty, which builds to last stage in Dockerfile
# target:
### platforms to build for, defaults to linux/amd64
### other options: linux/amd64,linux/arm64,linux/arm/v7
platforms: linux/amd64,linux/arm64,linux/arm/v7
### Create a PR comment with image tags and labels
### defaults to false
# comment-enable: false
================================================
FILE: LICENSE
================================================
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================================================
FILE: README.md
================================================
# Wordsmith App
Wordsmith is the demo project originally shown at DockerCon EU 2017 and 2018.
The demo app runs across three containers:
- **[api](api/Dockerfile)** - a Java REST API which serves words read from the database
- **[web](web/Dockerfile)** - a Go web application that calls the API and builds words into sentences
- **db** - a Postgres database that stores words
## Architecture

## Build and run in Docker Compose
The only requirement to build and run the app from source is Docker. Clone this repo and use Docker Compose to build all the images. You can use the new V2 Compose with `docker compose` or the classic `docker-compose` CLI:
```shell
docker compose up --build
```
Or you can pull pre-built images from Docker Hub using `docker compose pull`.
## Deploy using Kubernetes manifests
You can deploy the same app to Kubernetes using the [Kustomize configuration](./kustomization.yaml). It will define all of the necessary Deployment and Service objects and a ConfigMap to provide the database schema.
Apply the manifest using `kubectl` while at the root of the project:
```shell
kubectl apply -k .
```
Once the pods are running, browse to http://localhost:8080 and you will see the site.
Docker Desktop includes Kubernetes and the [kubectl](https://kubernetes.io/docs/reference/kubectl/overview/) command line, so you can work directly with the cluster. Check the services are up, and you should see output like this:
```text
kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
db ClusterIP None <none> 55555/TCP 2m
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 38d
web LoadBalancer 10.107.215.211 <pending> 8080:30220/TCP 2m
words ClusterIP None <none> 55555/TCP 2m
```
Check the pods are running and you should see one pod each for the database and web components and five pods for the words API:
```text
kubectl get pods
NAME READY STATUS RESTARTS AGE
db-8678676c79-h2d99 1/1 Running 0 1m
web-5d6bfbbd8b-6zbl8 1/1 Running 0 1m
api-858f6678-6c8kk 1/1 Running 0 1m
api-858f6678-7bqbv 1/1 Running 0 1m
api-858f6678-fjdws 1/1 Running 0 1m
api-858f6678-rrr8c 1/1 Running 0 1m
api-858f6678-x9zqh 1/1 Running 0 1m
```
================================================
FILE: api/.dockerignore
================================================
.idea
target
*.iml
================================================
FILE: api/Dockerfile
================================================
# Build stage
FROM --platform=${BUILDPLATFORM} maven:3-amazoncorretto-20 as build
WORKDIR /usr/local/app
COPY pom.xml .
RUN mvn verify -DskipTests --fail-never
COPY src ./src
RUN mvn verify
# Run stage
FROM --platform=${TARGETPLATFORM} amazoncorretto:20
WORKDIR /usr/local/app
COPY --from=build /usr/local/app/target .
ENTRYPOINT ["java", "-Xmx8m", "-Xms8m", "-jar", "/usr/local/app/words.jar"]
EXPOSE 8080
================================================
FILE: api/pom.xml
================================================
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>codestory</groupId>
<artifactId>words</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
</properties>
<build>
<finalName>words</finalName>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.2.0</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.10.1</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>3.0.0</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.3.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.19.1</version>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<version>3.4.0</version>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.3.0</version>
<configuration>
<archive>
<manifest>
<addClasspath>true</addClasspath>
<classpathPrefix>dependency</classpathPrefix>
<mainClass>Main</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>32.0.1-jre</version>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.7.2</version>
</dependency>
</dependencies>
</project>
================================================
FILE: api/src/main/java/Main.java
================================================
import com.google.common.base.Charsets;
import com.google.common.base.Supplier;
import com.google.common.base.Suppliers;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.sql.*;
import java.util.NoSuchElementException;
public class Main {
public static void main(String[] args) throws Exception {
Class.forName("org.postgresql.Driver");
HttpServer server = HttpServer.create(new InetSocketAddress(8080), 0);
server.createContext("/noun", handler(() -> randomWord("nouns")));
server.createContext("/verb", handler(() -> randomWord("verbs")));
server.createContext("/adjective", handler(() -> randomWord("adjectives")));
server.start();
}
private static String randomWord(String table) {
try (Connection connection = DriverManager.getConnection("jdbc:postgresql://db:5432/postgres", "postgres", "")) {
try (Statement statement = connection.createStatement()) {
try (ResultSet set = statement.executeQuery("SELECT word FROM " + table + " ORDER BY random() LIMIT 1")) {
while (set.next()) {
return set.getString(1);
}
}
}
} catch (SQLException e) {
e.printStackTrace();
}
throw new NoSuchElementException(table);
}
private static HttpHandler handler(Supplier<String> word) {
return t -> {
String response = "{\"word\":\"" + word.get() + "\"}";
byte[] bytes = response.getBytes(Charsets.UTF_8);
System.out.println(response);
t.getResponseHeaders().add("content-type", "application/json; charset=utf-8");
t.getResponseHeaders().add("cache-control", "private, no-cache, no-store, must-revalidate, max-age=0");
t.getResponseHeaders().add("pragma", "no-cache");
t.sendResponseHeaders(200, bytes.length);
try (OutputStream os = t.getResponseBody()) {
os.write(bytes);
}
};
}
}
================================================
FILE: db/words.sql
================================================
CREATE TABLE nouns (word TEXT NOT NULL);
CREATE TABLE verbs (word TEXT NOT NULL);
CREATE TABLE adjectives (word TEXT NOT NULL);
INSERT INTO nouns(word) VALUES
('cloud'),
('elephant'),
('gø language'),
('laptøp'),
('cøntainer'),
('micrø-service'),
('turtle'),
('whale'),
('gøpher'),
('møby døck'),
('server'),
('bicycle'),
('viking'),
('mermaid'),
('fjørd'),
('legø'),
('flødebolle'),
('smørrebrød');
INSERT INTO verbs(word) VALUES
('will drink'),
('smashes'),
('smøkes'),
('eats'),
('walks tøwards'),
('løves'),
('helps'),
('pushes'),
('debugs'),
('invites'),
('hides'),
('will ship');
INSERT INTO adjectives(word) VALUES
('the exquisite'),
('a pink'),
('the røtten'),
('a red'),
('the serverless'),
('a brøken'),
('a shiny'),
('the pretty'),
('the impressive'),
('an awesøme'),
('the famøus'),
('a gigantic'),
('the gløriøus'),
('the nørdic'),
('the welcøming'),
('the deliciøus');
================================================
FILE: docker-compose.yml
================================================
version: '3.9'
# we'll keep the version for now to work in Compose and Swarm
services:
db:
image: postgres:10.0-alpine
volumes:
- ./db:/docker-entrypoint-initdb.d/
api:
build: api
image: dockersamples/wordsmith-api
deploy:
replicas: 5
web:
build: web
image: dockersamples/wordsmith-web
ports:
- "8080:80"
================================================
FILE: k8s-manifests/api.yaml
================================================
apiVersion: v1
kind: Service
metadata:
name: api
labels:
app: api
spec:
ports:
- port: 8080
targetPort: 8080
name: api
selector:
app: api
clusterIP: None
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: api
labels:
app: api
spec:
replicas: 5
selector:
matchLabels:
app: api
template:
metadata:
labels:
app: api
spec:
containers:
- name: api
image: dockersamples/wordsmith-api
ports:
- containerPort: 8080
name: api
================================================
FILE: k8s-manifests/db.yaml
================================================
apiVersion: v1
kind: Service
metadata:
name: db
labels:
app: db
spec:
ports:
- port: 5432
targetPort: 5432
name: db
selector:
app: db
clusterIP: None
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: db
labels:
app: db
spec:
selector:
matchLabels:
app: db
template:
metadata:
labels:
app: db
spec:
containers:
- name: db
image: postgres:10.0-alpine
ports:
- containerPort: 5432
name: db
volumeMounts:
- name: db-schema
mountPath: /docker-entrypoint-initdb.d
volumes:
- name: db-schema
configMap:
name: db-schema
================================================
FILE: k8s-manifests/web.yaml
================================================
apiVersion: v1
kind: Service
metadata:
name: web
labels:
app: web
spec:
ports:
- port: 8080
targetPort: 80
name: web
selector:
app: web
type: LoadBalancer
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: web
labels:
app: web
spec:
selector:
matchLabels:
app: web
template:
metadata:
labels:
app: web
spec:
containers:
- name: web
image: dockersamples/wordsmith-web
ports:
- containerPort: 80
name: web
================================================
FILE: kustomization.yaml
================================================
resources:
- k8s-manifests/api.yaml
- k8s-manifests/db.yaml
- k8s-manifests/web.yaml
configMapGenerator:
- name: db-schema
files:
- ./db/words.sql
generatorOptions:
disableNameSuffixHash: true
================================================
FILE: web/Dockerfile
================================================
# BUILD
# use the build platforms matching arch rather than target arch
FROM --platform=$BUILDPLATFORM golang:alpine as builder
WORKDIR /usr/local/app
ARG TARGETARCH
COPY dispatcher.go .
# build for the target arch not the build platform host arch
RUN GOOS=linux GOARCH=$TARGETARCH go build dispatcher.go
# RUN
# defaults to using the target arch image
FROM alpine:latest
WORKDIR /usr/local/app
COPY --from=builder /usr/local/app/dispatcher ./
COPY static ./static/
EXPOSE 80
CMD ["/usr/local/app/dispatcher"]
================================================
FILE: web/dispatcher.go
================================================
package main
import (
"fmt"
"io/ioutil"
"log"
"math/rand"
"net"
"net/http"
"time"
)
func main() {
rand.Seed(time.Now().UnixNano())
fwd := &forwarder{"api", 8080}
http.Handle("/words/", http.StripPrefix("/words", fwd))
http.Handle("/", http.FileServer(http.Dir("static")))
fmt.Println("Listening on port 80")
http.ListenAndServe(":80", nil)
}
type forwarder struct {
host string
port int
}
func (f *forwarder) ServeHTTP(w http.ResponseWriter, r *http.Request) {
addrs, err := net.LookupHost(f.host)
if err != nil {
log.Println("Error", err)
http.Error(w, err.Error(), 500)
return
}
log.Printf("%s %d available ips: %v", r.URL.Path, len(addrs), addrs)
ip := addrs[rand.Intn(len(addrs))]
log.Printf("%s I choose %s", r.URL.Path, ip)
url := fmt.Sprintf("http://%s:%d%s", ip, f.port, r.URL.Path)
log.Printf("%s Calling %s", r.URL.Path, url)
if err = copy(url, ip, w); err != nil {
log.Println("Error", err)
http.Error(w, err.Error(), 500)
return
}
}
func copy(url, ip string, w http.ResponseWriter) error {
resp, err := http.Get(url)
if err != nil {
return err
}
for header, values := range resp.Header {
for _, value := range values {
w.Header().Add(header, value)
}
}
w.Header().Set("source", ip)
buf, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
_, err = w.Write(buf)
return err
}
================================================
FILE: web/static/app.js
================================================
"use strict";
var lab = angular.module('lab', []);
lab.controller('LabCtrl', function ($scope, $http, $timeout) {
$scope.noun1 = "";
$scope.noun2 = "";
$scope.adjective1 = "";
$scope.adjective2 = "";
$scope.verb = "";
getWord($http, $timeout, '/words/noun?n=1', function(resp1) {
$scope.noun1 = word(resp1);
});
getWord($http, $timeout, '/words/adjective?a=1', function(resp) {
var adj = word(resp);
adj.word = adj.word.charAt(0).toUpperCase() + adj.word.substr(1)
$scope.adjective1 = adj;
});
getWord($http, $timeout, '/words/verb', function(resp) {
$scope.verb = word(resp);
});
getWord($http, $timeout, '/words/noun?n=2', function(resp2) {
$scope.noun2 = word(resp2);
});
getWord($http, $timeout, '/words/adjective?n=2', function(resp) {
$scope.adjective2 = word(resp);
});
});
function getWord($http, $timeout, url, callback) {
$http.get(url).then(callback, function(resp) {
$timeout(function() {
console.log("Retry: " + url);
getWord($http, $timeout, url, callback);
}, 500);
});
}
function word(resp) {
return {
word: resp.data.word,
hostname: resp.headers()["source"]
};
}
================================================
FILE: web/static/index.html
================================================
<!DOCTYPE html>
<html lang="en" ng-app="lab">
<head>
<meta charset="utf-8">
<title>dockercon EU 18</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="logo"><img src="images/logo.svg" style="width:50%"/></div>
<div class="sentence" ng-controller="LabCtrl">
<div class="line line1 slide-in">
<span class="result adjective slide-in">
<span class="word slide-in" ng-bind="adjective1.word"></span>
<span class="hostname" ng-bind="adjective1.hostname"></span>
</span>
<span class="result noun slide-in">
<span class="word" ng-bind="noun1.word"></span>
<span class="hostname" ng-bind="noun1.hostname"></span>
</span>
</div>
<div class="line line2 slide-in">
<span class="result verb slide-in">
<span class="word" ng-bind="verb.word"></span>
<span class="hostname" ng-bind="verb.hostname"></span>
</span>
</div>
<div class="line line3 slide-in">
<span class="result adjective slide-in">
<span class="word" ng-bind="adjective2.word"></span>
<span class="hostname" ng-bind="adjective2.hostname"></span>
</span>
<span class="result noun slide-in">
<span class="word" ng-bind="noun2.word"></span>
<span class="hostname" ng-bind="noun2.hostname"></span>
</span>
</div>
</div>
<div class="footer"><img src="images/homes.png" /></div>
</body>
<script src="angular.min.js"></script>
<script src="app.js"></script>
</html>
================================================
FILE: web/static/style.css
================================================
/* latin-ext */
@font-face {
font-family: 'Raleway';
font-style: normal;
font-weight: 400;
src: local('Raleway'), local('Raleway-Regular'), url('fonts/font1.woff2') format('woff2');
unicode-range: U+0100-024F, U+1E00-1EFF, U+20A0-20AB, U+20AD-20CF, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
font-family: 'Raleway';
font-style: normal;
font-weight: 400;
src: local('Raleway'), local('Raleway-Regular'), url('fonts/font2.woff2') format('woff2');
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2212, U+2215;
}
body {
text-align: center;
margin: 0;
padding: 0;
background-color: #001f5b;
}
.logo {
margin-top: 30px;
}
.footer {
position: absolute;
bottom: 0;
width: 100%;
z-index: -1;
opacity: 0.5;
}
.footer img {
max-width: 100%;
vertical-align: middle;
}
.sentence {
margin: 70px auto 0 auto;
}
.line {
margin-bottom: 30px;
transform: translateX(-100%) rotate(-20deg);
}
.slide-in {
animation: slide-in .5s forwards ease-in;
}
.line3.slide-in {
animation: slide-in 1s forwards ease-in;
}
.line2.slide-in {
animation: slide-in 1.2s forwards ease-in;
}
@keyframes slide-in {
100% {
transform: translateX(0%);
}
}
.result {
position: relative;
display: inline-block;
padding: 0 20px;
margin: 0 10px;
color: white;
height: 175px;
width: 330px;
}
.result .word {
display: inline-block;
font-family: 'Raleway', sans-serif;
font-size: 45px;
color: white;
line-height: 155px;
height: 175px;
vertical-align: middle;
margin-top: 20px;
}
.result .hostname {
position: absolute;
width: 100%;
left: 0;
bottom: 8px;
font-size: 0.8em;
height: 14px;
}
.noun {
background-image: url('images/lego_blue.png') !important;
}
.verb {
background-image: url('images/lego_yellow.png') !important;
}
.adjective {
background-image: url('images/lego_light_blue.png') !important;
}
gitextract_78thyfox/
├── .github/
│ ├── dependabot.yml
│ └── workflows/
│ ├── call-docker-build-api.yaml
│ └── call-docker-build-web.yaml
├── LICENSE
├── README.md
├── api/
│ ├── .dockerignore
│ ├── Dockerfile
│ ├── pom.xml
│ └── src/
│ └── main/
│ └── java/
│ └── Main.java
├── db/
│ └── words.sql
├── docker-compose.yml
├── k8s-manifests/
│ ├── api.yaml
│ ├── db.yaml
│ └── web.yaml
├── kustomization.yaml
└── web/
├── Dockerfile
├── dispatcher.go
└── static/
├── app.js
├── index.html
└── style.css
SYMBOL INDEX (13 symbols across 4 files)
FILE: api/src/main/java/Main.java
class Main (line 12) | public class Main {
method main (line 13) | public static void main(String[] args) throws Exception {
method randomWord (line 23) | private static String randomWord(String table) {
method handler (line 39) | private static HttpHandler handler(Supplier<String> word) {
FILE: db/words.sql
type nouns (line 1) | CREATE TABLE nouns (word TEXT NOT NULL)
type verbs (line 2) | CREATE TABLE verbs (word TEXT NOT NULL)
type adjectives (line 3) | CREATE TABLE adjectives (word TEXT NOT NULL)
FILE: web/dispatcher.go
function main (line 13) | func main() {
type forwarder (line 24) | type forwarder struct
method ServeHTTP (line 29) | func (f *forwarder) ServeHTTP(w http.ResponseWriter, r *http.Request) {
function copy (line 51) | func copy(url, ip string, w http.ResponseWriter) error {
FILE: web/static/app.js
function getWord (line 35) | function getWord($http, $timeout, url, callback) {
function word (line 44) | function word(resp) {
Condensed preview — 20 files, each showing path, character count, and a content snippet. Download the .json file or copy for the full structured content (37K chars).
[
{
"path": ".github/dependabot.yml",
"chars": 164,
"preview": "version: 2\nupdates:\n # Maintain dependencies for GitHub Actions\n - package-ecosystem: \"github-actions\"\n directory: "
},
{
"path": ".github/workflows/call-docker-build-api.yaml",
"chars": 2649,
"preview": "name: Build API\n# template source: https://github.com/dockersamples/.github/blob/main/templates/call-docker-build.yaml\n\n"
},
{
"path": ".github/workflows/call-docker-build-web.yaml",
"chars": 2662,
"preview": "name: Build Web\n# template source: https://github.com/dockersamples/.github/blob/main/templates/call-docker-build.yaml\n\n"
},
{
"path": "LICENSE",
"chars": 11357,
"preview": " Apache License\n Version 2.0, January 2004\n "
},
{
"path": "README.md",
"chars": 2548,
"preview": "# Wordsmith App\n\nWordsmith is the demo project originally shown at DockerCon EU 2017 and 2018.\n\nThe demo app runs across"
},
{
"path": "api/.dockerignore",
"chars": 19,
"preview": ".idea\ntarget\n*.iml\n"
},
{
"path": "api/Dockerfile",
"chars": 408,
"preview": "# Build stage\nFROM --platform=${BUILDPLATFORM} maven:3-amazoncorretto-20 as build\nWORKDIR /usr/local/app\nCOPY pom.xml .\n"
},
{
"path": "api/pom.xml",
"chars": 3238,
"preview": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<project xmlns=\"http://maven.apache.org/POM/4.0.0\"\n xmlns:xsi=\"http://www"
},
{
"path": "api/src/main/java/Main.java",
"chars": 2176,
"preview": "import com.google.common.base.Charsets;\nimport com.google.common.base.Supplier;\nimport com.google.common.base.Suppliers;"
},
{
"path": "db/words.sql",
"chars": 978,
"preview": "CREATE TABLE nouns (word TEXT NOT NULL);\nCREATE TABLE verbs (word TEXT NOT NULL);\nCREATE TABLE adjectives (word TEXT NOT"
},
{
"path": "docker-compose.yml",
"chars": 362,
"preview": "version: '3.9'\n# we'll keep the version for now to work in Compose and Swarm\n\nservices:\n db:\n image: postgres:10.0-a"
},
{
"path": "k8s-manifests/api.yaml",
"chars": 562,
"preview": "apiVersion: v1\nkind: Service\nmetadata:\n name: api\n labels:\n app: api\nspec:\n ports:\n - port: 8080\n targetPo"
},
{
"path": "k8s-manifests/db.yaml",
"chars": 728,
"preview": "apiVersion: v1\nkind: Service\nmetadata:\n name: db\n labels:\n app: db\nspec:\n ports:\n - port: 5432\n targetPort"
},
{
"path": "k8s-manifests/web.yaml",
"chars": 548,
"preview": "apiVersion: v1\nkind: Service\nmetadata:\n name: web\n labels:\n app: web\nspec:\n ports:\n - port: 8080\n targetPo"
},
{
"path": "kustomization.yaml",
"chars": 212,
"preview": "resources:\n - k8s-manifests/api.yaml\n - k8s-manifests/db.yaml\n - k8s-manifests/web.yaml\nconfigMapGenerator:\n - name:"
},
{
"path": "web/Dockerfile",
"chars": 515,
"preview": "# BUILD\n# use the build platforms matching arch rather than target arch\nFROM --platform=$BUILDPLATFORM golang:alpine as "
},
{
"path": "web/dispatcher.go",
"chars": 1368,
"preview": "package main\n\nimport (\n\t\"fmt\"\n\t\"io/ioutil\"\n\t\"log\"\n\t\"math/rand\"\n\t\"net\"\n\t\"net/http\"\n\t\"time\"\n)\n\nfunc main() {\n\trand.Seed(ti"
},
{
"path": "web/static/app.js",
"chars": 1183,
"preview": "\"use strict\";\n\nvar lab = angular.module('lab', []);\n\nlab.controller('LabCtrl', function ($scope, $http, $timeout) {\n $s"
},
{
"path": "web/static/index.html",
"chars": 1415,
"preview": "<!DOCTYPE html>\n<html lang=\"en\" ng-app=\"lab\">\n<head>\n <meta charset=\"utf-8\">\n <title>dockercon EU 18</title>\n <link r"
},
{
"path": "web/static/style.css",
"chars": 1912,
"preview": "/* latin-ext */\n@font-face {\n font-family: 'Raleway';\n font-style: normal;\n font-weight: 400;\n src: local('Raleway')"
}
]
About this extraction
This page contains the full source code of the dockersamples/k8s-wordsmith-demo GitHub repository, extracted and formatted as plain text for AI agents and large language models (LLMs). The extraction includes 20 files (34.2 KB), approximately 9.0k tokens, and a symbol index with 13 extracted functions, classes, methods, constants, and types. Use this with OpenClaw, Claude, ChatGPT, Cursor, Windsurf, or any other AI tool that accepts text input. You can copy the full output to your clipboard or download it as a .txt file.
Extracted by GitExtract — free GitHub repo to text converter for AI. Built by Nikandr Surkov.