Development cycle around Apache Felix OSGI-container

Sat, 21 Feb 2015 22:34:46 GMT

With job change comes project change and some bizarre technologies like old-n-hairy OSGI.
There are some steps to get comprehensive environment.

All done with a lot of virtualization magic under SmartOS, thanks to Joyent and other guys whom deliver this amazing stuff.

0. Create project with Maven and its maven-bundle-plugin to produce bundle jar.
1. Make necessary changes to sources to start with.
For example, simple Activator class only with start() and stop() methods like


import org.osgi.framework._

class Activator extends BundleActivator {
    def start(bc: BundleContext):Unit = { Console.println("started") }
    def stop(bc: BundleContext):Unit = { Console.println("stopped") }
}

At this point you should be able to successfully package it locally.
2. Add sources under VCS control (or do it from start). I use git and bitbucket service for this time.
3. Here comes SmartOS:


[root@saule ~]# vmadm list
UUID                                  TYPE  RAM      STATE             ALIAS
...
e810ea3c-ac05-48e5-9a80-0c42bca99a6e  OS    512      running           postgres
3eb5876f-4577-4791-99d0-4b16b4cbe3d1  OS    800      running           nexus
bea2edbb-443c-4291-8007-5d67cd038acf  OS    2048     running           teamcity
e8bec698-0cdd-45f1-a039-dfbd591864e9  OS    4096     running           hq

I have rented dedicated server to do dirty work at, and there are already all vm-instances for software production cycle.
Everybody else can do the same with idea "one vm for one service" in mind.
"hq" hosts working shell+vim, is ready to edit code and run Felix container.
All used software is free and OSS (majority of them).
I use Nexus OSS version and Teamcity free version (up to 10 users, 20 build configurations and 3 build agents).
4. In Teamcity: create project, add vcs-root from bitbucket (with access via "deployment" key from "teamcity" vm), use auto-created or create by hand build configuration (which simply runs maven deploy).
5. In Nexus:
since OSS version shipped without some features, we should download and install plugin to be able create proxy repository from maven to OBR which will be used later in Felix.
Read and repeat instructions from Nexus OBR Plugin install
Then login into Nexus and create proxy-repo. Again, instruction is already done by some good guys Transforming a Maven Repository into an OSGi Bundle Repository
6. Download and unpack Felix dustribution in your working place ("hq" in my case).
7. Run Felix and add proxy repo from previous step via command


obr:repo add <repo-url/.meta/obr.xml>

8. Push sources to remote repo, which will trigger build in Teamcity and deploy to some repo in Nexus (snapshots for example).
9. In Felix


obr:list // to list all artifacts from proxy-repo added in step 7
obr:deploy <artifact>
felix:start <its id>

With some other things under the hood (maven deployment configuration and settings) and a bit of luck, you will get continuous delivery infrastructure.

comments

Scala PaaS/SaaS

Sun, 15 Apr 2012 20:30:31 GMT

Free PaaS/SaaS for Scala apps via stackoverflow:
~~Jelastic - has interesting deployment and run options~~
Heroku - has less options then Jelastic and becomes expensive more faster while picking some upgrades.
UPD

comments

Make me unsee it

Thu, 29 Mar 2012 07:17:54 GMT

некий разработчик, профиль на мойкруг

Некоторые выполненные работы:
...
- Реализация на Java языка описания условий и его компилятора в SQL на основе маппинга Hibernate;

/* ...
 * @ created 07.07.2008
 * @ $Author$
 * @ $Revision$
 */
package ru.<кроваый энтерпрайз>.core.yaopus.interpreter.variables;
( Read more... )
/me пошел дальше искать способ сообщить об ошибке пользователю без выбрасывания exception'а.

UPD: fixed for teh great justice

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Amber

Development cycle around Apache Felix OSGI-container

Scala PaaS/SaaS

Make me unsee it