Correction: I see the examples do not support “separate nestable groups”, only “one flattened set of groups”. So now I am even more confused as to what the Application can/must contain.
From: Shaheedur Haque (shahhaqu) Sent: Wednesday, March 18, 2015 10:21 AM To: dev Subject: RE: What is a Cartridge Group in Stratos 4.1.0? OK, thanks for the explanation. In fact, this mirrors exactly my original proposal which was to have separate nestable group objects, so I like it. However, I have now written the code to create a pre-flattened Application; are you saying that is NOT supported? So what *exactly* can or must an Application contain? From: Reka Thirunavukkarasu [mailto:[email protected]] Sent: Tuesday, March 17, 2015 7:17 PM To: dev Subject: Re: What is a Cartridge Group in Stratos 4.1.0? Hi Shaheedur, Cartridge group used to specify what are the cartridges/groups need to be grouped together and the behavior among the children of that group. That's how we have grouped the cartridge/groups together. The behaviors of a group can be startupDependency, termiation Behaviour and scale dependents. When you decide that a bunch of cartridges can be grouped together based on their functionality, you can define a group and specify these behaviors. This behavior will be specified in a cartridge group w.r.t the children of that group. Please note that since we have recursive group support, you can define a cartridge group inside a cartridge group as well as i mentioned earlier. Why we have defined separate cartridge group definition rather than directly defining cartridge group inline in the application is that the re-usability. If you define a cartridge group definition, then it can be used in multiple application. In that case, if you are to have a group in your application, you will have to define at-least one cartridge group definition by having these behaviors in recursive manner. Then you can use that cartridge group in your application and provide dynamic information such as alias, how many group instances and etc (these i believe dynamic information which can be differed from application to application). You can find sample carriage groups in https://github.com/apache/stratos/tree/master/samples/cartridges-groups Thanks, Reka On Tue, Mar 17, 2015 at 11:38 AM, Shaheedur Haque (shahhaqu) <[email protected]<mailto:[email protected]>> wrote: Reposting to main mailer… From: Shaheedur Haque (shahhaqu) Sent: Tuesday, March 17, 2015 10:29 AM To: [email protected]<mailto:[email protected]> Subject: What is a Cartridge Group in Stratos 4.1.0? Hi, I am trying to define the application shown below, but am getting this exception: TID: [0] [STRATOS] [2015-03-17 10:09:21,282] ERROR {org.apache.axis2.rpc.receivers.RPCInOnlyMessageReceiver} - Cartridge group not found: [group-name] blade-0x0 java.lang.RuntimeException: Cartridge group not found: [group-name] blade-0x0 at org.apache.stratos.autoscaler.applications.parser.DefaultApplicationParser.parseGroups(DefaultApplicationParser.java:563) at org.apache.stratos.autoscaler.applications.parser.DefaultApplicationParser.buildCompositeAppStructure(DefaultApplicationParser.java:315) … I’d not heard of a cartridge group, so I Iooked in https://docs.google.com/document/d/1AYLAAXySvh24JZw0NQixlKg4yX8jqD3Vtc_Pz-zmHaw, only to see a (new?) reference to such an object, with no data. I eventually found https://cwiki.apache.org/confluence/display/STRATOS/4.1.0+Sample+Cartridge+Group+Definition. However, ignoring the obvious errors/obsolete items, this seems completely redundant w.r.t to the Application definition. So what is this object for? How do I get rid of the error? Thanks, Shaheed P.S. This is the Application, note that “blade-0x0” is in the outermost group, and the output is sorted by key: { "application_template_id": "system", "components": { "cartridges": [], "groups": [ { "alias": "blade-0x0", "cartridges": [ { "cartridgeMax": 10, "cartridgeMin": 1, "subscribableInfo": { "alias": "cartridge1-1x0", "artifactRepository": { "privateRepo": true, "repoPassword": "c-policy-2", "repoUrl": "http://xxx:10080/git/default.git";, "repoUsername": "user" }, "autoscalingPolicy": "economyPolicy", "deploymentPolicy": "static-1" }, "type": "cartridge1" }, { "cartridgeMax": 10, "cartridgeMin": 1, "subscribableInfo": { "alias": "cartridge2-1x0", "artifactRepository": { "privateRepo": true, "repoPassword": "c-policy-2", "repoUrl": "http://xxx:10080/git/default.git";, "repoUsername": "user" }, "autoscalingPolicy": "economyPolicy", "deploymentPolicy": "static-1" }, "type": "cartridge2" } ], "groups": [ { "alias": "slice-1x0", "cartridges": [ { "cartridgeMax": 10, "cartridgeMin": 1, "subscribableInfo": { "alias": "cartridge-proxy-2x0", "artifactRepository": { "privateRepo": true, "repoPassword": "c-policy-1a", "repoUrl": "http://xxx:10080/git/default.git";, "repoUsername": "user" }, "autoscalingPolicy": "economyPolicy", "deploymentPolicy": "static-1" }, "type": "cartridge-proxy" }, { "cartridgeMax": 10, "cartridgeMin": 1, "subscribableInfo": { "alias": "cisco-sample-vm-2x0", "artifactRepository": { "privateRepo": true, "repoPassword": "c-policy-1b", "repoUrl": "http://xxx:10080/git/default.git";, "repoUsername": "user" }, "autoscalingPolicy": "economyPolicy", "deploymentPolicy": "static-1" }, "type": "cisco-sample-vm" } ], "groups": [], "max": 1, "min": 1, "name": "slice-1x0" } ], "max": 2, "min": 1, "name": "blade-0x0" } ] } } -- Reka Thirunavukkarasu Senior Software Engineer, WSO2, Inc.:http://wso2.com, Mobile: +94776442007<tel:%2B94776442007>
