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Re: [jetty-users] Getting JNDI/ db connection pool to work 
On 7/14/2015 3:48 PM, Jan Bartel wrote:

This is the link to the page with the current docs:
https://www.eclipse.org/jetty/documentation/


I don't see a link to a "jetty dependencies" page. Likely you are
following out-of-date doco - alternatively post a link to the page
linked from the one of the doc bundles above and I'll amend/remove it
as necessary.


This page seems to be there:

https://eclipse.org/jetty/documentation/current/jndi-embedded.html

-- errata:

"You can obtain this jar from the Jetty dependencies site.
404
http://download.eclipse.org/jetty/orbit/javax.mail.glassfish_1.4.1.v201005082020.jar/dist/

Ok, those links on that page look wrong, they shouldn't have the dist/
suffix. I've opened a bug for that:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=472671



One thing I noticed that wasn't in the docs is that I had --module=jndi
commented out in start.ini.

You should have jndi, plus and maybe ext (eg if you've copied your
driver jars into ext/)  modules enabled.
Adding plus and ext to start.ini caused logging on load of the jetty-env.xml, yay! So I know that's being loaded now:
java.lang.IllegalStateException: No Method: <Call class="org.eclipse.jetty.util.log.Log" name="info"><Arg>Starting my super test application%%%%%%%%%%%%%%%%%%%%</Arg></Call> on class org.eclipse.jetty.util.log.Log 



However, you've posted links to the jetty embedded page, but yet you
mention using a jetty distribution. If you're making a standard webapp
and deploying it to a jetty distro, you should enable the modules I
just mentioned.
That would be worth mentioning in the docs ("add these lines to start.ini"). I was reaching for straw in looking at the embedded doc.
The latest problem is that it can't find the mysql driver. I can't find a jar to put in jetty-base/lib/ext/, just mysql-connector-java is in my gradle config at build time, but no obvious jar to grab in my .m2 cache. 

Thanks,
Bill


If you've created a main class then you need to make
sure that jetty-plus, jetty-env jars are on the command line, and you
need to make sure that the extra configuration classes of
JettyEnvXmlConfiguration and PlusConfiguration are enabled for the
WebAppContext - see line 20 of the example code pasted on the
jndi-embedded.html page you linked to.

Jan



Now I get:

On the lookup line in my servlet:

     DataSource ds = (DataSource)ic.lookup("java:comp/env/jdbc/pr");

Getting hard-to-interpret NameNotFoundException:

00:19:24.129 [qtp1915503092-15] ERROR com.priot.servlet.GetSession - Naming
javax.naming.NameNotFoundException
         at
org.eclipse.jetty.jndi.NamingContext.lookup(NamingContext.java:533)
~[jetty-jndi-9.3.1-SNAPSHOT.jar:9.3.1-SNAPSHOT]

This tells me that I am getting jetty-jndi from local source, so adding my
own info in a warn and reinstalling:

2015-07-14 00:19:24.129:WARN:jndi:qtp1915503092-15: Binding null for
firstComponent: [env]

But 'env' is boilerplate from the examples:

     DataSource myDS = (DataSource)ic.lookup("java:comp/env/jdbc/myds");

Does that reveal something useful?

Thanks,
Bill



jetty-plus is most definitely still in use. You'll need it. I suggest
you look at either the embedded examples in the jetty repo or the
test-jndi webapp in the jetty distro to see what you need to do.

cheers
Jan

On 12 July 2015 at 02:45, Bill Ross <ross@xxxxxxxxxxxx> wrote:

By the way, I notice the 'Jetty dependencies site' is broken, and the
jndi
intro page that mentions it looks out of date.
Why isn't the source for jetty-jndi.jar in the distribution? It would be
easier to debug. I found the jar on maven and got it via my build.gradle:

      compile group: 'org.eclipse.jetty', name: 'jetty-jndi', version:
'9.3.0.v20150612'

But now it gives me this on lookup:

09:25:46.627 [qtp1963387170-11] ERROR com.priot.servlet.GetSession -
Naming
javax.naming.NameNotFoundException
          at
org.eclipse.jetty.jndi.NamingContext.lookup(NamingContext.java:532)
~[jetty-jndi-9.3.0.v20150612.jar:9.3.0.v20150612]
          at
org.eclipse.jetty.jndi.NamingContext.lookup(NamingContext.java:563)
~[jetty-jndi-9.3.0.v20150612.jar:9.3.0.v20150612]
          at
org.eclipse.jetty.jndi.NamingContext.lookup(NamingContext.java:578)
~[jetty-jndi-9.3.0.v20150612.jar:9.3.0.v20150612]
          at

org.eclipse.jetty.jndi.java.javaRootURLContext.lookup(javaRootURLContext.java:106)
~[jetty-jndi-9.3.0.v20150612.jar:9.3.0.v20150612]
          at javax.naming.InitialContext.lookup(InitialContext.java:417)
~[?:1.8.0_45]
          at com.priot.servlet.GetSession.doPost(GetSession.java:53)
[classes/:?]

I wonder if this I got from the doc is right, since it defines the name -
what about the empty first arg?
Hm - it uses jetty.plus but jetty-plus.jar seems to be a thing of the
past
(see note on out of date page above - jetty-plus.jar seems to have ended
w/
v7 in maven central). Another odd thing is that the name is in the Arg,
not
in the id, which is normally what I'd expect to use to look up an object:

<Configure class="org.eclipse.jetty.webapp.WebAppContext">
    <New id="prDataSource" class="org.eclipse.jetty.plus.jndi.Resource">
     <Arg></Arg>
     <Arg>jdbc/pr</Arg>
     <Arg>
      <New class="com.mchange.v2.c3p0.ComboPooledDataSource">
         <Set name="driverClass">com.mysql.jdbc.Driver</Set>
         <Set name="jdbcUrl">jdbc:mysql://localhost:3306/pr</Set>
         <Set name="user">user</Set>
         <Set name="password">pwd</Set>
      </New>
     </Arg>
    </New>
</Configure>

Thanks,
Bill



On 7/10/2015 11:05 PM, Jan Bartel wrote:

Looks to me that you don't have jetty-jndi.jar on the classpath - it
contains the jndi impl.

Jan

On 11 July 2015 at 14:52, Bill Ross <ross@xxxxxxxxxxxx> wrote:

I have:

----- src/main/webapp/WEB-INF/web.xml

...
<resource-ref>
    <description>DataSource</description>
    <res-ref-name>jdbc/pr</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
</resource-ref>
...

----- src/main/webapp/WEB-INF/jetty-env.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN"
"http://www.eclipse.org/jetty/configure.dtd";>

<Configure class="org.eclipse.jetty.webapp.WebAppContext">
    <New id="prDataSource" class="org.eclipse.jetty.plus.jndi.Resource">
     <Arg></Arg>
     <Arg>jdbc/pr</Arg>
     <Arg>
      <New class="com.mchange.v2.c3p0.ComboPooledDataSource">
         <Set name="driverClass">com.mysql.jdbc.Driver</Set>
         <Set name="jdbcUrl">jdbc:mysql://localhost:3306/pr</Set>
         <Set name="user">user</Set>
         <Set name="password">pwd</Set>
      </New>
     </Arg>
    </New>
</Configure>

------ src/main/java/com/priot/servlet/GetSession.java

import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;

              InitialContext ic = new InitialContext();
              DataSource ds =
(DataSource)ic.lookup("java:comp/env/jdbc/pr");

--- Thrown on ic.lookup():

01:19:19.592 [qtp1963387170-40] ERROR com.priot.servlet.GetSession -
Naming
javax.naming.NoInitialContextException: Need to specify class name in
environment or system property, or as an applet parameter, or in an
application resource file:  java.naming.factory.initial
          at
javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
~[?:1.8.0_45]
          at
javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:313)
~[?:1.8.0_45]
          at

javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:350)
~[?:1.8.0_45]
          at javax.naming.InitialContext.lookup(InitialContext.java:417)
~[?:1.8.0_45]
          at com.priot.servlet.GetSession.doPost(GetSession.java:53)
[classes/:?]

It's as if my jetty-env.xml isn't being seen? But it is there in the war
file (along with the .swp).

Am I missing something obvious?

Thanks,
Bill
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