OpenOlat

OpenOlat is a web-based e-learning platform for teaching, learning, assessment and communication, an LMS, a learning management system. OpenOlat impresses with its simple and intuitive operation.

A sophisticated modular toolkit provides course authors with a wide range of didactic possibilities. Each OpenOlat installation can be individually extended, adapted to organizational needs, and integrated into existing IT infrastructures. The architecture is designed for minimal resource consumption, scalability and security in order to guarantee high system reliability.

Table of Contents

1. Licensing
2. Ressources
3. Community
4. Developers
   • Setting up OpenOlat in Eclipse
   • Compress javascript and CSS
   • REST API
   • Automated tests
   • Experimental: setting up OpenOlat on Eclipse with an Application Server

Licensing

With regard to licensing and copyright please refer to the file LICENSE and NOTICE.TXT

Ressources

• Installation
• About OpenOlat
• Mailing list
• Issues
• OpenOlat for the community An OpenOlat instance dedicated to the community

Being a community member

We strongly suggest to participate in the OpenOlat community membership program. Even though this software is free and open source, the development and management has to be funded by someone. If you like what we do and want the product to be maintained and developed in the long run you should consider purchasing a membership: Partner program.

Developers

Setting up OpenOlat in Eclipse

This is an installation guide for developers.

Preconditions

• Check that you are using maven 3.1 or higher (mvn -V)
• Check that you have the git plugin installed in eclipse
• Check that you have git installed
• MySQL 5.6 or greater or PostreSQL 9.4

1. In Eclipse

Create a repository location (https://github.com/OpenOLAT/OpenOLAT.git) and clone the repo. Right click to clone the repository into your workspace.

If M2_REPO Eclipse variable is missing in Eclipse then execute in terminal:

mvn -Declipse.workspace=<location of your workspace> eclipse:configure-workspace

In a terminal, create the eclipse project and classpath settings by running:

mvn eclipse:clean eclipse:eclipse

Refresh the project.

You need now to create an olat.local.properties file somewhere. Copy the olat.local.properties.sample to olat.local.properties in the project root folder, adjust the file to match your setup. See the comments in the file header for more configuration options. Right click on the file src/main/java/olat.local.properties in our eclipse project to open the file properties and link it to your own olat.local.properties you created before.

Make sure the project compiled without errors. Warnings are ok. If the project did not compile, you have to fix the problems before you proceed. See Troubleshooting section below.

2. Setting up the database

Prepare database permissions and initialize the database.

For MySQL: create a user 'openolat' and a database 'openolat'

CREATE DATABASE IF NOT EXISTS openolat;
GRANT ALL PRIVILEGES ON openolat.* TO 'openolat' IDENTIFIED BY 'openolat';
UPDATE mysql.user SET HOST='localhost' WHERE USER='openolat' AND HOST='%';
FLUSH PRIVILEGES;

For PostgreSQL: please check their PostgreSQL manual how to create a user and database.

Write the OpenOlat database schema to the OpenOlat database. Example for MySQL:

mysql -u openolat -p openolat < src/main/resources/database/mysql/setupDatabase.sql

Optional: if you want to run the jUnit tests, make sure you also create and initialize the test database that you configured in src/test/profile/mysql/olat.local.properties for MySQL or src/test/profile/postgresql/olat.local.properties for PostgreSQL.

3. Setting up the Tomcat server in Eclipse

Setup a tomcat server by clicking on OpenOlat -> Run As -> "Run on Server". The "Run on Server" wizard will pop up and you define define a new server. Look for Apache -> Tomcat v8.0.

Add openolat as web application in the step "Add and remove" and click finish.

Double click the newly created server and increase the timeout to something like 180s.

Open the launch configuration of the server, select the tab Arguments and add these arguments to the VM arguments:

-XX:+UseG1GC -XX:+UseStringDeduplication -Xms256m -Xmx1024m -Djava.awt.headless=true

Open the generated server.xml file and manually set the following parameters:

• In the "Context" element set parameter reloadable="false"
• In all "Connector" elements set paramter URIEncoding="UTF-8"

Option: to use the application server database connection pool configure a jdbc data resource in the "Context" element, set db.source=jndi in the olat.local.properties with db.jndi to the name of the data source like this:

db.source=jndi
db.jndi=java:comp/env/jdbc/OpenOLATDS

Next add the resource descriptor to your tomcat context descriptor.

For MySQL:

<Resource auth="Container" driverClassName="com.mysql.jdbc.Driver" type="javax.sql.DataSource"
          maxIdle="4" maxTotal="16" maxWaitMillis="10000"
          name="jdbc/OpenOLATDS"
          password="olat" username="olat"
          url="jdbc:mysql://localhost:3306/openolat?useUnicode=true&amp;characterEncoding=UTF-8&amp;cachePrepStmts=true&amp;cacheCallableStmts=true&amp;autoReconnectForPools=true"
          testOnBorrow="true" testOnReturn="false"
          validationQuery="SELECT 1" validationQueryTimeout="-1"/>

For PostreSQL:

<Resource auth="Container" driverClassName="org.postgresql.Driver" type="javax.sql.DataSource"
          maxIdle="4" maxTotal="16" maxWaitMillis="-1"
          name="jdbc/OpenOLATPostgresDS"
          username="postgres" password="postgres"
          url="jdbc:postgresql://localhost:5432/olat"
          testOnBorrow="true" testOnReturn="false"
          validationQuery="SELECT 1" validationQueryTimeout="-1"/>

If unsure, set db.source=local to use the bundled data connection pool (not recommended for production)

You can now start the server and open the following URL http://localhost:8080/olat in your favorite browser. You can log in with user "administrator" and password "openolat".

Have fun, give feedback and contribute!

Troubleshooting

• OutOfMemoryException: in Eclipse: setup VM arguments by clicking on Run > Run Configurations > Arguments > VM Arguments and pasting: -XX:+UseG1GC -XX:+UseStringDeduplication -Xms256m -Xmx1024m -Djava.awt.headless=true

• Optional: create an empty olat.local.properties and save it to /yourTomcatDir/lib (OpenOlat searches for this file on the classpath and /tomcat/lib is part of it). But it should start with just the default config!

• Usually you will get a timeout exception when you start a new OpenOlat. After double clicking on the server entry you can increase the timeout for the startup.

• If your tomcat starts very quickly but you cannot access OpenOlat it might be that tomcat did not find the OpenOlat context. Right click the server entry and click publish to inform eclipse about a new or updated context.

• If you run into problems with classes or resources not found e.g. "ClassNotFoundException" right click your server config and run the "Clean..." Task to republish all resources. Problems comes mostly when switching from eclipse to console and back with command like mvn clean, or eclipse clean and such. You will always get a clean and working environment when you do the following: Eclipse clean, create eclipse settings with launch, Server publish resources and restart OpenOlat.

Background (optional for further interest)

There is only one spring context for the whole OpenOlat which you can access via CoreSpringFactory. The context is configured with the filesserviceconfig/olat.properies and can be overwritten with olat.local.properties. Changes in olat.local.properties are reflected upon each restart of Tomcat. You can further override OpenOlat settings with JVM arguments -Dmy.option=enabled.

Compress javascript and CSS

The javascript and CSS files are minified and aggregated. If you make some changes, run the following command to compress them (execution time ca. 1-2 minutes) and refresh your Eclipse project:

mvn clean package
mvn compile -Pcompressjs,tomcat

Themes

Readme

REST API

To read the OpenOlat REST API documentation:

1. start OpenOlat
2. go to Administration -> Core configuration -> REST API
3. Make sure the REST API ist enabled
4. Click the documentation link in the admin panel

Automated tests

Preconditions

• Make sure the following ports are not in use (Selenium, Tomcat ) 14444 / 8080 / 8009 / 8089

• Make sure you have a MySQL database version 5.6 with the InnoDB as default engine or PostgreSQL 9.4 or newer. The server must be at localhost.

• Make sure maven has enough memory. E.g execute the following:

export MAVEN_OPTS= -Xms512m -Xmx1024m
mvn compile -Pdocumentation,tomcat

• Make sure the tmp directory is writable. E.g. execute the following.

ls -la `printenv TMPDIR`

Setup (necessary only once)

Setup database users and tables in the pom.xml. The default settings are:

<test.env.db.name>olattest</test.env.db.name>
<test.env.db.user>olat</test.env.db.user>
<test.env.db.pass>olat</test.env.db.pass>

You can override them with -D in the command line.

You need an empty database named olat. The maven command will create and drop databases automatically but need an existing database to do that. Here we will explain it with MySQL.

Setup first an user for the database

CREATE USER 'olat'@'localhost' IDENTIFIED BY 'olat';

Create the database:

CREATE DATABASE IF NOT EXISTS olat;
GRANT ALL PRIVILEGES ON olat.* TO 'olat' IDENTIFIED BY 'olat';
UPDATE mysql.user SET HOST='localhost' WHERE USER='olat' AND HOST='%';
FLUSH PRIVILEGES;

Create the real test database, it will set once the permissions:

CREATE DATABASE IF NOT EXISTS olattest;
GRANT ALL PRIVILEGES ON olattest.* TO 'olat' IDENTIFIED BY 'olat';
FLUSH PRIVILEGES;

Initialize the database

mysql -u olat -p olattest < src/main/resources/database/mysql/setupDatabase.sql

Execute JUnit tests

The JUnit tests load the framework to execute (execution time ca. 10m)

For MySQL

mvn clean test -Dwith-mysql -Ptomcat

The following options are available to configure the database connection:

-Dtest.env.db.user=root
-Dtest.env.db.pass=serial

For PostgreSQL

mvn clean test -Dwith-postgresql -Ptomcat

with the options:

-Dtest.env.db.postgresql.user=postgres
-Dtest.env.db.postgresql.pass=serial

To only run the OpenOlat test suite and exclude the unit tests of QtiWorks, add the following option:

-Dtest=org.olat.test.AllTestsJunit4

Example:

mvn clean test -Dwith-postgresql -Dtest.env.db.postgresql.pass=serial -Dtest=org.olat.test.AllTestsJunit4 -Ptomcat

Execute selenium functional tests

The selenium integration tests start the whole web application in Tomcat 8.0. They run with Google Chrome or Firefox and their WebDrivers will be automatically downloaded (internet connection needed). The browsers need to be installed the standard way on Mac or Linux.

Execution time ca. 60 - 90m

For MySQL:

mvn clean verify -DskipTests=true -Dwith-mysql -Ptomcat

For PostgreSQL:

mvn clean verify -DskipTests=true -Dwith-postgresql -Dtest.env.db.postgresql.pass=serial -Ptomcat

Or with Firefox

mvn clean verify -DskipTests=true -Dwith-postgresql -Dtest.env.webdriver.browser=firefox -Dtest.env.db.postgresql.pass=serial -Ptomcat

Execute a single selenium functional integration test in Eclipse

First build the application without tests as before

mvn clean verify -DskipTests=true -DskipSeleniumTests=true -Ptomcat

Run single test as JUnit Test in Eclipse

Experimental: setting up OpenOlat on Eclipse with an Application Server

OpenOlat supports only Apache Tomcat officially, but it can also run on other application servers like JBoss AS / Wildfly. This section is intended for people who have some minimal experience with these servers and can install a JDBC driver, set some JMS resources...

As of OpenOlat 10, we need WildFly because of JPA 2.1 (Hibernate 5.2.x)

The beginning of the installation is the same as Tomcat as described above. To create your eclipse project, use these commands instead of the default one:

 mvn eclipse:clean eclipse:eclipse -P-tomcat,wildfly

Configuration WildFly (JBoss AS 10.1)

We need Hibernate 5.2, you need to use the tutorial to update the version of hibernate in Widlfly: http://docs.jboss.org/hibernate/orm/5.2/topical/html_single/wildfly/Wildfly.html

Define a JDBC connection pool in your standalone.xml configuration with a jndi-name like: java:jboss/datasources/OpenOLATDS and set this JNDI name in olat.local.properties set the following properties:

db.source=jndi
db.jndi=java:jboss/datasources/OpenOLATDS
cluster.mode=Cluster

The cluster mode will disable the hibernate cache

Create a queue with a jndi-name like this:

java:jboss/exported/jms/queue/searchQueue

and a topic:

java:jboss/exported/jms/topic/sysbus

in olat.local.properties set the following properties:

jms.provider=jndi
jms.broker.jndi=java:/ConnectionFactory
sysbus.broker.jndi=java:jboss/exported/jms/topic/sysbus
search.broker.jndi=java:jboss/exported/jms/queue/searchQueue
index.broker.jndi=java:jboss/exported/jms/queue/indexQueue
certificate.broker.jndi=java:jboss/exported/jms/queue/certificateQueue

The following features are delegated to the application server

State	Feature
OK	JDBC Connections
OK	JMS
OK	JAX-RS (restapi)
OK	JAX-WS (vitero, openmeetings)
x	Mail
x	LDAP Connection
OK	Hibernate/JPA (only JBoss AS, we depend on Hibernate)
OK	Caching (for JPA second level cache for example)