Cron doesn't start

[Shachar Grembek]

Hi,

I am running an App Engine Standard environment and trying to se cron scheduled tasks. I've created the cron.xml (alongside the web.xml) and went by the guide in the following link: https://cloud.google.com/appengine/docs/standard/java/config/cron

However, I don't see the cron start (both in the logs and in the console App Engine -> Task Queues -> Cron Jobs)

Can u please advise what might I be doing wrong?

cron.xml:

<?xml version="1.0" encoding="UTF-8"?>
<cronentries>
    <cron>
        <url>/tasks/repsai/retrieve_tickets</url>
        <target>beta</target>
        <description>daily summary job</description>
        <schedule>every 2 minutes</schedule>
    </cron>
    <cron>
        <url>/recache</url>
        <description>Repopulate the cache every 2 minutes</description>
        <schedule>every 2 minutes</schedule>
    </cron>
</cronentries>

Thanks

[Roxana Ioana Roman]

Are your cron jobs visible in App Engine -> Task Queues -> Cron Jobs? If not, you have to run update_cron. 

Can you add your web.xml and the Servlet which handles these cron jobs? Your second cron job does not have a <target> which means the job will run on the default service .

Roxana

[Shachar Grembek]

Hi Roxana,

Thanks, I cannot see the cron jobs App Engine -> Task Queues -> Cron Jobs.  How do I run update_cron?

Please find the web.xml:

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

    <servlet>
        <servlet-name>repsai-tickets-retrieval</servlet-name>
        <servlet-class>ai.reps.server.api.RepsAITicketsRetrieval</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>repsai-tickets-retrieval</servlet-name>
        <url-pattern>/tasks/repsai/retrieve_tickets</url-pattern>
    </servlet-mapping>

    <filter>
        <filter-name>ObjectifyFilter</filter-name>
        <filter-class>com.googlecode.objectify.ObjectifyFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>ObjectifyFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <listener>
        <listener-class>ai.reps.server.datalayer.OfyHelper</listener-class>
    </listener>
</web-app>

[Roxana Ioana Roman]

To update cron: 

./appengine-java-sdk/bin/appcfg.sh update_cron [YOUR_APP_DIR]

If you are using maven you can also do inside your project directory:

mvn appengine update_cron

After this you should be able to see a list of your cron jobs under App Engine -> Task Queues -> Cron Jobs and you will also be able to start them manually from there.

Also, in the web.xml there is no mapping for /recache url. 

A cron job invokes an URL, using an HTTP GET request, so make sure you have a doGet () method in your RepsAITicketsRetrieval class.

[Shachar Grembek]

Hi,

Thanks, We are progressing, but only this time I received the following error when running update_cron:

"Bad configuration: Could not find the WEB-INF directory in /Users/shachar/server_project/WEB-INF. The given application file path must point to an exploded WAR directory that contains a WEB-INF directory."

The WEB-INF is located in the folder web within my project /Users/shachar/server_project/web/WEB-INF, how can I tell update_cron where is the right folder?

Best

Shachar

[Roxana Ioana Roman]

Hi,

appcfg.sh update_cron [YOUR_APP_DIR]. Try playing with  [YOUR_APP_DIR], give it /Users/shachar/server_project/web or move WEB-INF one step before. My WEB-INF is in src/main/webapp/ WEB-INF.

Good luck!

[Shachar Grembek]

Worked! Thanks