See also some newer slides
Setting up
This section describes how to set up Eclipse and Odysseus for development.
New: See also our video about this.
1. Prerequisites
You will need the following tools:
- Java 8 JDK17 OpenJDK
- Eclipse for RCP and RAP Developers (Important! Do not use a standard eclipse version!)
- GIT client (you can use git from command line or with a tool of your choice)
2. Checkout Source Code
Remark: Under windows it is best to use a folder, that is not inside the user home path (because of long file names). A good option would be a base folder git somewhere on the root level.
There are different ways to create new functionality with Odysseus. The first way should be used if you want to add something new to Odysseus (e.g. a new wrapper) but do not want to change the common code base. This should be the preferred way of development with Odysseus:
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git clone --recurse-submodules https://git.swl.informatik.uni-oldenburg.de/scm/ody/odysseusrepotemplate.git newRepo cd newRepo cd odysseus_dev git checkout master |
Remark: because you are not allowed to push updates to the template repository you should change your repository URL to your git location and rename your folder to your new repository name.
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// in your newRepo Folder!
git remote set-url origin <new url> |
There is also a first approach for an eclipse plugin that could make processing easier. For this, install the Odysseus Development Tools from the following update site
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https://odysseus.informatik.uni-oldenburg.de/download/odt/ |
and uncheck "Group items by category".
After installation and restart there is a new menu option Odysseus where you can create an initial project:
Option 2: Extending an Existing Odysseus Plugin
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git clone --recurse-submodules <your repo URL>
cd <repo>
cd odysseus_dev
git checkout master |
Remark: There could be some updates in odysseus_dev that is not already reflected in each module. So it is always a good idea to update the odysseus_dev submodule to the newest version.
If you missed the --recurse-submodules, you can also use:
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git clone <your repo URL>
cd <repo>
git submodule init
git submodule update
cd odysseus_dev
git checkout master
cd ..
git remote set-url origin <new url> |
3. Setup Eclipse
After Eclipse started, you have to import all bundles (these are the parts of Odysseus and are equal to an Eclipse project). Use "File -> Import -> Existing Projects into Workspace" to import them into Eclipse as follows:
After clicking "Next", select all needed projects.
Now there are many project already opened:
Most of them are from odysseus_dev.
The source code folder has the following subfolders:
- client: contains all bundles that run on the client and don't have any dependencies to the server directly. It mainly offers the GUI.
- common: this holds common stuff and utilities that are needed on both server and client. Common does not have any dependencies to other folders like server, client...
- monolithic: this folder contains bundles that will only work in a monolithic system where server and client are the same product
- resource: possibly some resources for the bundle, but probably empty. The resources are part of the target platform and are downloaded automatically by Eclipse when settings the target platform.
- server: this is the server part of Odysseus and contains Odysseus main functionalities. Except of common, it does not have any dependencies to other folders. It does not have any GUI or client functionalities.
- test: contains stuff for testing and benchmarking
Furthermore, each main folder has different subfolders. Each subfolder normally contains a certain functionality or a dedicated extension (aka plugin for Odysseus).
In the follwing screenshot some bundles are selected.
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For Odysseus core development: We recommend to use a dedicated Eclipse workspace for Odysseus, because a full import of Odysseus may have more than 300 projects. The most simple way is as follows. If you are starting Eclipse for the first time, choose the folder where you checked out the source code as the workspace location. If you already have a workspace, you can switch it via "File -> Switch Workspace -> Other...".
4. Target Platform
You probably only checked out the bundles you need, not the whole Odysseus core, resources and other stuff. All these things are part of the target platform and are loaded when setting the target platform for your workspace. Before you do that, you probably now see a lot of compiler errors. After you set the target platform, the errors should be gone. This definition is provided via the "target-platform.target" file (hint: if you don't see the target platform as a project when importing, go back to the git checkout project and make sure you cloned the submodule).If you are using the project template, the error. This is because the target platform ist not set.
The target platform can be found in the project targetplatform. If you are making core odysseus development (which is unlikely), it can be found in the bundle/project called "de.uniol.inf.is.odysseus.common.feature". Open this file and click "Set as target platform.
Choose the correct Targetplatform for you work.
Remark: It works best, when you first open the file (double click) and wait some time (until the platform is resolved).
Click "Set as Active Target Platform" to use this as your target platform. This can take a while. When you click on the small green progress-bar icon in Eclipse you can see the progress.
You can also use CRTL-SHIFT-R to search for the target platform
Notice, the target platform is valid for your whole workspace (therefore we recommend to use a dedicated workspace for Odysseus development). Remark: Sometimes eclipse behaves strange when setting a new target platform. See Odysseus FAQ for further hints if there are problems with the target platform.
. Important: Do not click, if "Resolving..." is still active!
After that, the project will be compiled and there should not be any errors anymore.
If there are still errors, you should try to update the odysseus_dev folder (sometimes there are errors with the sites, that dliver target platform contents)
5. First Run - Available Products
Now you should be able to run Odysseus. There are some predefined product-definitions to run Odysseus. Depending on the bundles/folders you checked out before they can differ, but the standard submodule should contain three products:
- Odysseus Server .product - (located in de.uniol.inf.is.odysseus.server.starterproduct) - This is just a server-based instance of Odysseus (without any GUI) which can be used e.g. via a webservice REST.
- Odysseus Studio 2 (Client) .product - (located in de.uniol.inf.is.odysseus.client.starterproduct) - This is only the client part (GUI), which tries to connect to an Odysseus Server instance via webservice.
- Odysseus Studio 2 (Monolithic).product - (located in de.uniol.inf.is.odysseus.client.starter or de.uniol.inf.is.odysseus.monolithic.feature product ) - This combines server and client into a single product and adds some additional bundles that only work in such a monolithic combination.
For your first run, the easiest way is to start the "Odysseus Studio 2 (Monolithic).product"" (de.uniol.inf.is.odysseus.studio.product.monolithic). Open this file and go to the tab "Overview". Click "Synchronize" under "Testing" and afterwards click "Launch an Eclipse application" to run Odysseus (you can alternatively run it in debug mode if you want). When Odysseus Studio (the GUI) comes up, you have to insert some credentials. A default user is "System" and the password is "manager", the tenant can be left empty. Now Odysseus should be up and running.
6. Additional Information
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Odysseus comes with the Simple Logging Facade for Java (SLF4J). To use logging, add the de.uniol.inf.is.odysseus.slf4j bundle. In this bundle you can find the log4jlog4j2.properties xml to configure the logging behavior .
MacOS
Currently, only the server is working on MacOS. You can start the Odysseus Server product from Eclipse, but you cannot start any GUI product (e.g. Monolithic) that involves RCP. To run the server product, you have to install Java JDK 1.8, e.g. with homebrew: https://www.lonecpluspluscoder.com/2017/10/08/installing-other-versions-of-the-java-jdk-via-homebrew/(or use one of the given).