add haproxy cfg

.idea/artifacts/simpleWebApp_jar.xml

+<component name="ArtifactManager">
+  <artifact type="jar" name="simpleWebApp:jar">
+    <output-path>$PROJECT_DIR$/out/artifacts/simpleWebApp_jar</output-path>
+    <root id="archive" name="simpleWebApp.jar">
+      <element id="module-output" name="simpleWebApp" />
+      <element id="extracted-dir" path="$MAVEN_REPOSITORY$/org/jsoup/jsoup/1.12.1/jsoup-1.12.1.jar" path-in-jar="/" />
+    </root>
+  </artifact>
+</component>
\ No newline at end of file

.idea/workspace.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="ArtifactsWorkspaceSettings">
+    <artifacts-to-build>
+      <artifact name="simpleWebApp:jar" />
+    </artifacts-to-build>
+  </component>
   <component name="AutoImportSettings">
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="ad904d3c-917a-41ec-8997-0c459fd2925c" name="Changes" comment="">
-      <change afterPath="$PROJECT_DIR$/src/main/java/org/ds/WebServer.java" afterDir="false" />
+    <list default="true" id="ad904d3c-917a-41ec-8997-0c459fd2925c" name="Changes" comment="simple web app">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pom.xml" beforeDir="false" afterPath="$PROJECT_DIR$/pom.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/main/java/org/ds/Main.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/org/ds/Main.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/main/java/org/ds/WebServer.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/java/org/ds/WebServer.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/main/resources/index.html" beforeDir="false" afterPath="$PROJECT_DIR$/src/main/resources/index.html" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
@@ -35,13 +38,16 @@
     <option name="hideEmptyMiddlePackages" value="true" />
     <option name="showLibraryContents" value="true" />
   </component>
-  <component name="PropertiesComponent">{
-  &quot;keyToString&quot;: {
-    &quot;RunOnceActivity.ShowReadmeOnStart&quot;: &quot;true&quot;,
-    &quot;git-widget-placeholder&quot;: &quot;master&quot;,
-    &quot;kotlin-language-version-configured&quot;: &quot;true&quot;
+  <component name="PropertiesComponent"><![CDATA[{
+  "keyToString": {
+    "RunOnceActivity.ShowReadmeOnStart": "true",
+    "git-widget-placeholder": "master",
+    "kotlin-language-version-configured": "true",
+    "project.structure.last.edited": "Artifacts",
+    "project.structure.proportion": "0.15",
+    "project.structure.side.proportion": "0.2850575"
   }
-}</component>
+}]]></component>
   <component name="RunManager">
     <configuration default="true" type="JetRunConfigurationType">
       <module name="simple-web-app" />
@@ -66,6 +72,15 @@
       <option name="presentableId" value="Default" />
       <updated>1740306614046</updated>
     </task>
+    <task id="LOCAL-00001" summary="simple web app">
+      <option name="closed" value="true" />
+      <created>1740307109999</created>
+      <option name="number" value="00001" />
+      <option name="presentableId" value="LOCAL-00001" />
+      <option name="project" value="LOCAL" />
+      <updated>1740307109999</updated>
+    </task>
+    <option name="localTasksCounter" value="2" />
     <servers />
   </component>
   <component name="Vcs.Log.Tabs.Properties">
@@ -79,4 +94,8 @@
       </map>
     </option>
   </component>
+  <component name="VcsManagerConfiguration">
+    <MESSAGE value="simple web app" />
+    <option name="LAST_COMMIT_MESSAGE" value="simple web app" />
+  </component>
 </project>
\ No newline at end of file

src/haproxy/dockerfile

+FROM haproxy:1.7
+COPY haproxy.cfg /usr/local/etc/haproxy/haproxy.cfg
+ENTRYPOINT ["haproxy", "-f", "/usr/local/etc/haproxy/haproxy.cfg"]

src/haproxy/haproxy.cfg

+global
+    maxconn 500
+
+defaults
+    mode http
+    timeout connect 10s
+    timeout client  50s
+    timeout server  50s
+
+frontend http-in
+    bind *:80
+    default_backend application_nodes
+
+backend application_nodes
+    balance roundrobin
+    option httpchk GET /status
+    http-check expect string "Server is alive"
+    server server01 app1:9001 check inter 1s
+    server server02 app2:9002 check inter 2s
+    server server03 app3:9003 check inter 2s
+
+listen stats 
+    bind *:83
+    stats enable
+    stats uri /
+
+
+
+

src/haproxy/haproxy_routing.cfg

+global
+
+defaults
+    mode http
+    timeout connect 5000
+    timeout client  50000
+    timeout server  50000
+
+
+frontend http-in
+    bind *:80
+    acl even_cluster path_end -i /even
+    acl odd_cluster path_end -i /odd
+    
+    use_backend even_servers if even_cluster
+    use_backend odd_servers if odd_cluster
+
+backend even_servers
+    balance roundrobin
+    server server02 127.0.0.1:9001/time check
+
+backend odd_servers
+    balance roundrobin
+    server server01 127.0.0.1:9000/time check
+    server server03 127.0.0.1:9002/time check
+

src/haproxy/haproxy_tcp_mode.cfg

+global
+
+defaults
+    mode tcp
+    timeout connect 5000
+    timeout client  50000
+    timeout server  50000
+
+frontend http-in
+    bind *:80
+    default_backend application_nodes
+
+backend application_nodes
+    balance roundrobin
+    server server01 127.0.0.1:9000 check
+    server server02 127.0.0.1:9001 check
+    server server03 127.0.0.1:9002 check

src/main/java/org/ds/WebServer.java

@@ -16,7 +16,7 @@ public class WebServer {
     private static final String STATUS_ENDPOINT = "/status";
     private static final String HOME_PAGE_ENDPOINT = "/";
 
-    private static final String HTML_PAGE = "index.html";
+    private static final String HTML_PAGE = "/index.html";
 
     private final int port;
     private HttpServer server;

src/main/resources/META-INF/MANIFEST.MF

+Manifest-Version: 1.0
+Main-Class: org.ds.Main
+

src/main/resources/index.html

-
 <!DOCTYPE html>
 <html>
 <head>