In your /var/www/jetty-base-de/webapps/de.xml, you can set a
init-parameter that can be accessed from the
ServletContext.getInitParameter()
Example:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE Configure PUBLIC "-//Jetty//Configure//EN"
"http://www.eclipse.org/jetty/configure_10_0.dtd";>
<Configure class="org.eclipse.jetty.webapp.WebAppContext">
<Set name="contextPath">/de</Set>
<Set name="war">/var/www/words-5.0.war</Set>
<Call name="setInitParameter">
<Arg>mycontext.language</Arg>
<Arg>de</Arg>
</Call>
</Configure>
Then you can access it ...
@Override
public void init() throws ServletException {
String language =
getServletContext().getInitParameter("mycontext.language");
}
Joakim Erdfelt / [email protected]
On Wed, Oct 4, 2023 at 3:00 AM Alexander Farber via jetty-users <
[email protected]> wrote:
> 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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> [email protected]
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>
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