Good morning,
I have an "overengineered" setup with Jetty 10.0.16 and haproxy 2.7.8,
where I currently run 6 different Jetty instances to serve the same servlet
-
I have programmed that WAR servlet using Maven and it supports 6 languages:
src/main/resources/strings.properties
src/main/resources/strings_de.properties
src/main/resources/strings_fr.properties
src/main/resources/strings_nl.properties
src/main/resources/strings_pl.properties
src/main/resources/strings_ru.properties
and then in the configure method I fetch the language value from the
"COUNTRY" env var:
@Override
public void configure(JettyWebSocketServletFactory factory) {
mLanguage = System.getenv("COUNTRY");
mBundle = ResourceBundle.getBundle("strings",
LOCALES.get(mLanguage));
factory.setIdleTimeout(Duration.ofSeconds(IDLE_TIMEOUT_SECONDS));
factory.setMaxBinaryMessageSize(0);
factory.setMaxTextMessageSize(64 * 1024);
factory.setCreator(new WordsCreator(this,
mBundle.getString(STR_DATABASE_URL)));
}
Then I have the following 6 scripts on my Rocky Linux 8.8 to start the
Jetty instances
/etc/systemd/system/jetty-de.service
/etc/systemd/system/jetty-en.service
/etc/systemd/system/jetty-fr.service
/etc/systemd/system/jetty-nl.service
/etc/systemd/system/jetty-pl.service
/etc/systemd/system/jetty-ru.service
And the only differences the scripts have is the port and the "COUNTRY" env
var:
[Unit]
Description=Jetty
After=network-online.target
[Service]
Environment=COUNTRY=de
Type=simple
User=jetty
Group=jetty
ExecStart=/usr/bin/java -Djdbc.drivers=org.postgresql.Driver -jar
/usr/share/java/jetty-home-10.0.16/start.jar
jetty.home=/usr/share/java/jetty-home-10.0.16
jetty.base=/var/www/jetty-base-de jetty.http.host=127.0.0.1
jetty.http.port=8081
SuccessExitStatus=143
Restart=always
RestartSec=180
PrivateTmp=true
[Install]
WantedBy=multi-user.target
In the /etc/haproxy/haproxy.cfg I look at the request path and forward the
request to one of the ports:
backend jetty_de
server domain 127.0.0.1:8081 send-proxy
backend jetty_en
server domain 127.0.0.1:8082 send-proxy
backend jetty_fr
server domain 127.0.0.1:8083 send-proxy
backend jetty_nl
server domain 127.0.0.1:8084 send-proxy
backend jetty_pl
server domain 127.0.0.1:8085 send-proxy
backend jetty_ru
server domain 127.0.0.1:8080 send-proxy
frontend wordsbyfarber_com
bind 95.216.113.90:80
bind 95.216.113.90:443 ssl crt
/etc/pki/tls/certs/wordsbyfarber.com.pem no-sslv3
redirect scheme https if !{ ssl_fc }
use_backend jetty_de if { path_beg /de }
use_backend jetty_en if { path_beg /en }
use_backend jetty_fr if { path_beg /fr }
use_backend jetty_nl if { path_beg /nl }
use_backend jetty_pl if { path_beg /pl }
use_backend jetty_ru if { path_beg /ru }
default_backend jetty_en
Finaly my config XML files look like this to "bind" the servlet to a
certain context path:
# cat /var/www/jetty-base-de/webapps/de.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE Configure PUBLIC "-//Jetty//Configure//EN"
"http://www.eclipse.org/jetty/configure_9_0.dtd";>
<Configure class="org.eclipse.jetty.webapp.WebAppContext">
<Set name="contextPath">/de</Set>
<Set name="war">/var/www/words-5.0.war</Set>
</Configure>
Thank you for reading my mail, it is a bit longer, because I am trying to
provide enough details.
My question is, if it is possible to handle my task with a single Jetty
instance?
Could I set the env var in the /var/www/jetty-base-de/webapps/de.xml file?
Or maybe alternatively access the value of "contextPath" from the
configure() method?
Thank you for any suggestions
Alex
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