How to build the modelserver?

[glsp-bot]

Hey! I am having trouble with building the model server. Some dependencies are always missing... Guice and Jackson for example.

I tried it with the modeling version of eclipse and over the command line. I cloned the repo and tried mvn clean install
Are there any additional steps I need to do? I am talking about this https://github.com/eclipse-emfcloud/emfcloud-modelserver repo.

Thank you very much in advance.

original thread by Lukas

[glsp-bot]

[Martin Fleck]

Hi @x21L !
I just ran a build locally and for me the build works. I checked out the current master of the repository and called maven clean install. Do you maybe have an error log? Which version of maven do you use? I tested it with 3.6.0. In general we have two profiles: one for maven (you can add -Pm2 to your maven command) and one for p2 (-Pp2). By default the p2-build is used, can you maybe test whether the maven-build is working for you, just to narrow down the problem a bit.

[glsp-bot]

[Lukas]

@martin-fleck(martin-fleck) Thank you Martin for your fast response. The mvn clean install succeds and I am also able to run the jar file. But I am always getting not found as response. Even when trying /server/ping. Moreover I cannot run the ExampleServerLauncher, since dependencies are missing. I get the following error:

```Error: Unable to initialize main class org.eclipse.emfcloud.modelserver.example.ExampleServerLauncher
Caused by: java.lang.NoClassDefFoundError: com/google/inject/AbstractModule```

The -Pp2 build is working with the above result and -Pm2 gives the following error message:

```[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for org.eclipse.emfcloud.modelserver.parent 0.7.0-SNAPSHOT:
[INFO]
[INFO] org.eclipse.emfcloud.modelserver.parent ............ FAILURE [  4.669 s]
[INFO] org.eclipse.emfcloud.modelserver.bundles.parent .... SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.common ............ SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.lib ............... SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.examples.parent ... SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.coffee.model ...... SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.edit .............. SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.emf ............... SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.client ............ SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.example ........... SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.releng.parent ..... SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.codecoverage ...... SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.tests.parent ...... SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.tests ............. SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.client.tests ...... SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.common.tests ...... SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.edit.tests ........ SKIPPED
[INFO] org.eclipse.emfcloud.modelserver.emf.tests ......... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  4.905 s
[INFO] Finished at: 2021-06-10T16:07:19+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project org.eclipse.emfcloud.modelserver.parent: Could not resolve dependencies for project org.eclipse.emfcloud.modelserver:org.eclipse.emfcloud.modelserver.parent:pom:0.7.0-SNAPSHOT: Failed to collect dependencies at org.eclipse.emf:transaction:jar:1.4.0-v20100331-1738: Failed to read artifact descriptor for org.eclipse.emf:transaction:jar:1.4.0-v20100331-1738: Could not transfer artifact org.eclipse.emf:transaction:pom:1.4.0-v20100331-1738 from/to maven-default-http-blocker (http://0.0.0.0/): Blocked mirror for repositories: [irisa (http://maven.irisa.fr/artifactory/list/kermeta-public-release/, default, releases+snapshots)] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException```

Thank you very much for your help.

[glsp-bot]

[Lukas]

I am now able to run the jar file and the server seems to work, but I cannot run it with ExampleServerLauncher. I am using Maven 3.8.1

[glsp-bot]

[Lukas]

Is there a server down maybe, which is providing the dependency? I get the following error messages when I try to install the p2 stuff via help -> install new software in eclipse

```Cannot complete the install because one or more required items could not be found.
  Software being installed: ModelServer SDK Developer Resources 0.7.0.202106150655 (org.eclipse.emfcloud.modelserver.feature.source.feature.group 0.7.0.202106150655)
  Missing requirement: ModelServer Common 0.7.0.202102161029 (org.eclipse.emfcloud.modelserver.common 0.7.0.202102161029) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202102161059 (org.eclipse.emfcloud.modelserver.common 0.7.0.202102161059) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202102171256 (org.eclipse.emfcloud.modelserver.common 0.7.0.202102171256) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202102171625 (org.eclipse.emfcloud.modelserver.common 0.7.0.202102171625) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202102220934 (org.eclipse.emfcloud.modelserver.common 0.7.0.202102220934) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202102220944 (org.eclipse.emfcloud.modelserver.common 0.7.0.202102220944) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202103020905 (org.eclipse.emfcloud.modelserver.common 0.7.0.202103020905) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202103090743 (org.eclipse.emfcloud.modelserver.common 0.7.0.202103090743) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202103181734 (org.eclipse.emfcloud.modelserver.common 0.7.0.202103181734) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202104011013 (org.eclipse.emfcloud.modelserver.common 0.7.0.202104011013) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202104011134 (org.eclipse.emfcloud.modelserver.common 0.7.0.202104011134) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202104021202 (org.eclipse.emfcloud.modelserver.common 0.7.0.202104021202) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202104072147 (org.eclipse.emfcloud.modelserver.common 0.7.0.202104072147) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202105051529 (org.eclipse.emfcloud.modelserver.common 0.7.0.202105051529) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202105110843 (org.eclipse.emfcloud.modelserver.common 0.7.0.202105110843) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202105140954 (org.eclipse.emfcloud.modelserver.common 0.7.0.202105140954) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202105141035 (org.eclipse.emfcloud.modelserver.common 0.7.0.202105141035) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202106081211 (org.eclipse.emfcloud.modelserver.common 0.7.0.202106081211) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202106141500 (org.eclipse.emfcloud.modelserver.common 0.7.0.202106141500) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202106142314 (org.eclipse.emfcloud.modelserver.common 0.7.0.202106142314) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202106142349 (org.eclipse.emfcloud.modelserver.common 0.7.0.202106142349) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202106150614 (org.eclipse.emfcloud.modelserver.common 0.7.0.202106150614) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202106150626 (org.eclipse.emfcloud.modelserver.common 0.7.0.202106150626) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Missing requirement: ModelServer Common 0.7.0.202106150655 (org.eclipse.emfcloud.modelserver.common 0.7.0.202106150655) requires 'osgi.bundle; org.emfjson.jackson [1.2.0,2.0.0)' but it could not be found
  Cannot satisfy dependency:
    From: ModelServer SDK 0.7.0.202106150655 (org.eclipse.emfcloud.modelserver.feature.feature.group 0.7.0.202106150655)
    To: org.eclipse.equinox.p2.iu; org.eclipse.emfcloud.modelserver.common [0.7.0,1.0.0)
  Cannot satisfy dependency:
    From: ModelServer SDK Developer Resources 0.7.0.202106150655 (org.eclipse.emfcloud.modelserver.feature.source.feature.group 0.7.0.202106150655)
    To: org.eclipse.equinox.p2.iu; org.eclipse.emfcloud.modelserver.feature.feature.group [0.7.0.202106150655,0.7.0.202106150655]```

[glsp-bot]

[Martin Fleck]

@x21L(x21l) Very interesting! In theory everything should be available but we are currently working on the build so I'll double check if something got broken and come back to you. Do you use any specific update site or just the snapshot (https://download.eclipse.org/emfcloud/modelserver/p2/nightly/)?

[glsp-bot]

[Lukas]

I used just the snapshot

[glsp-bot]

[Martin Fleck]

Hi @x21L(x21l) , I just double checked and everything seems to be working on our end. However, we do not produce a composite update site so you would need to make sure that in your Eclipse installation you have the update site of our dependencies as well so that p2 can properly resolve the missing artifacts. For instance, we consume org.emfjson.jackson from the following update site: http://ghillairet.github.io/p2. You can find the full list in our own target definition file here. Please let me know if this resolves the issue for you.

[glsp-bot]

[Lukas]

Yes this resolved my issue thank you very much for your help. I really appreciate it.

[glsp-bot]

[Joerg Holtmann]

Hi all,

I am also currently having problems with building the model server in the IDE, but in this case this is due to the fact that the emfjson-jackson p2 update site returns a 404. Does anyone know something about this?

(Although I got the model server standalone jar and the other jars built and running, it would be far better for me to run it directly from the IDE to understand the concepts.)

Best,
Joerg

[glsp-bot]

[Martin Fleck]

@joerg-holtmann(joerg-holtmann) Hmm... I am not sure I can reproduce the issue. When entering the URL in the browser I also get the 404 but when referencing it from a target file or simply adding it in Eclipse as an update site, the resolution still works. I also tried to clear the p2 cache and have the update site reload and it still works. Does the problem still persist for you? I know that the https://github.com/emfjson/emfjson-jackson repository was recently archived so that might have taken the GitHub pages down as well.

[glsp-bot]

[Lukas]

Have your tried reloading the target platform? The file is located here /org.eclipse.emfcloud.modelserver.releng.target/r2020-09.target

[glsp-bot]

[Joerg Holtmann]

Sorry guys and thank you very much for all your replies @martin-fleck and @x21L ---I was too slow to give you an update after today's lunch, and you just gave me the hints that I accidentally tried this morning. ;-)

Indeed, after realizing that only Github wants an index.html and otherwise throws a 404 (and not shows like Eclipse pages a sign that I have a p2 update site at hand), I put the p2 update site into Eclipse and it worked. Afterward, I used the target definition and it worked even more the way I wanted to with the source code of the model server.

The only further thing that I encountered is that on trying to load the Model Server via an update site, it fails due to other dependencies that couldn't be loaded. I probably confused it with the EMF-JSON-Jackson update site 'issue'. However, this is no showstopper anymore for me, but might be of interest for others.