Thank you for the readme -Steve
From: <onap-discuss@lists.onap.org> on behalf of Tal Liron <tli...@redhat.com> Reply-To: "onap-discuss@lists.onap.org" <onap-discuss@lists.onap.org>, "tli...@redhat.com" <tli...@redhat.com> Date: Thursday, July 26, 2018 at 9:07 AM To: onap-discuss <onap-discuss@lists.onap.org> Subject: Re: [onap-discuss] [SO] Weekly Meeting Minutes 7-25-2018 Hi Steve, At your request I wrote a detailed README describing the solution and the example: https://github.com/tliron/puccini-bpmn/<https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_tliron_puccini-2Dbpmn_&d=DwMFaQ&c=LFYZ-o9_HUMeMTSQicvjIg&r=shs6nPzThSiGJml9VXN0Eg&m=JzO-UjYTbJGUMdAp-GBJsvFFs6ShpUxOx1OcnoUcxyA&s=wl1FD1fND7cuPeOEzE0FYxXfWxXz4hQcW_2AWtLRQdA&e=> For convenience, I will reproduce it here: Features The imports directory has everything needed to generate BPMN from TOSCA. Specifically there is bpmn.yaml<https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_tliron_puccini-2Dbpmn_blob_master_imports_bpmn.yaml&d=DwMFaQ&c=LFYZ-o9_HUMeMTSQicvjIg&r=shs6nPzThSiGJml9VXN0Eg&m=JzO-UjYTbJGUMdAp-GBJsvFFs6ShpUxOx1OcnoUcxyA&s=dNdhlhIFjwpk0aq_f8qmQwtK36nT7UKlnz8_Buf8VCU&e=>, which has the type information and in turn imports bpmn.js<https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_tliron_puccini-2Dbpmn_blob_master_imports_bpmn.js&d=DwMFaQ&c=LFYZ-o9_HUMeMTSQicvjIg&r=shs6nPzThSiGJml9VXN0Eg&m=JzO-UjYTbJGUMdAp-GBJsvFFs6ShpUxOx1OcnoUcxyA&s=VdPzf1BX7bl-4ZxS7AMZr4PzzMsiuH0fg6bg8tJg31o&e=>, which is the JavaScript code to generate BPMN. Two TOSCA features (introduced in TOSCA 1.1) are supported: Workflows TOSCA declarative workflows are translated into BPMN processes. Because a TOSCA workflow is essentially a graph of steps with sequential and parallel sections, in BPMN we must represent the graph using parallel gateways, diverging or converging as the case may be, as well as conditional gateways to represent step success or failure. The JavaScript analyzes the graph and inserts the appropriate gateways between the steps. Each step in TOSCA comprises zero or more activities that should happen in sequence. In BPMN, all the activities in the step become a single scriptTask entity. For now, we create a script made of pseudo-code that calls these activities. A complete solution would require a BPM orchestration environment and real code that would actually call node instances deployed in a cloud. Once the BPMN process is imported into BPM software, you may include this process as a sub-process within other BPM processes. The workflow may or may not hand control back to another sub-process, so that it may or may not be a continuation of a control loop. Policies and Policy Triggers Policy triggers are also translated into BPMN processes. Because the trigger must be executed from within an orchestrator on node instances deployed in a cloud, within configurable time intervals or schedules, this BPM process essentially hands over control of the loop to the orchestrator. By launching a new sub-process when triggered, control is handed back to the business process: an open loop. A single scriptTask entity is created for each target node of the policy, and all are executed in parallel using diverging/converging parallel gateways. A conditional gateway at the convergence is used to launch a new sub-process if any of the tasks succeed. Again, the script is made of pseudo-code that would call these operations within a BPM orchestration environment. Example Included is an example TOSCA service template, open-loop.yaml<https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_tliron_puccini-2Dbpmn_blob_master_open-2Dloop.yaml&d=DwMFaQ&c=LFYZ-o9_HUMeMTSQicvjIg&r=shs6nPzThSiGJml9VXN0Eg&m=JzO-UjYTbJGUMdAp-GBJsvFFs6ShpUxOx1OcnoUcxyA&s=iFiYk9ow9wzmmdlb6vlHRxxebiWlYuh81k74D7Y7JJo&e=>. This example demonstrates an open loop policy, notify_on_high_load, which has a trigger that runs an operation to get the CPU load on Compute nodes. If this operation returns true then a BPM process named NotifyUser would be launched. Also included is a TOSCA workflow named backup, which comprises a step graph that calls an operation on an interface while making sure to set node states, notify on failure, etc. This generated BPMN process can be executed on its own, or included as a sub-process within larger business processes. Because it does not hand control back to any other process when done, it represents an end event within a control loop. We've already included sample output of this example in open-loop.bpmn2<https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_tliron_puccini-2Dbpmn_blob_master_open-2Dloop.bpmn2&d=DwMFaQ&c=LFYZ-o9_HUMeMTSQicvjIg&r=shs6nPzThSiGJml9VXN0Eg&m=JzO-UjYTbJGUMdAp-GBJsvFFs6ShpUxOx1OcnoUcxyA&s=NrBOWJ3QNr7UKdyvZrEe3PCrzZBRve65REH0-SnF72A&e=>. To recreate the output, run this command (tested with Puccini 0.2): puccini-tosca compile open-loop.yaml | puccini-js exec bpmn -o open-loop.bpmn2 Also included is open-loop-design.bpmn2<https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_tliron_puccini-2Dbpmn_blob_master_open-2Dloop-2Ddesign.bpmn2&d=DwMFaQ&c=LFYZ-o9_HUMeMTSQicvjIg&r=shs6nPzThSiGJml9VXN0Eg&m=JzO-UjYTbJGUMdAp-GBJsvFFs6ShpUxOx1OcnoUcxyA&s=N0Wa3kMB5uCAs3nmwepI_HlMKCoT7GHTti0B3U4reEc&e=>, which is the same file with added diagram information so that it would appear more nicely in a BPMN GUI. We used the Eclipse BPMN2 modeler<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.eclipse.org_bpmn2-2Dmodeler_&d=DwMFaQ&c=LFYZ-o9_HUMeMTSQicvjIg&r=shs6nPzThSiGJml9VXN0Eg&m=JzO-UjYTbJGUMdAp-GBJsvFFs6ShpUxOx1OcnoUcxyA&s=SJl3qOG7SyLszHL6Ph4dGgKvZd43z7mzpHB8RQ-FwT8&e=> to edit the diagram. You can import either file into your BPM software. Tested with jBPM<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.jbpm.org_&d=DwMFaQ&c=LFYZ-o9_HUMeMTSQicvjIg&r=shs6nPzThSiGJml9VXN0Eg&m=JzO-UjYTbJGUMdAp-GBJsvFFs6ShpUxOx1OcnoUcxyA&s=W1qHS9fU6rfTyZgCQIfd6G0KXepK18Hxj3t4z-1bc1s&e=> 7.8.0. On Thu, Jul 26, 2018 at 6:51 AM Steve Smokowski <ss8...@att.com<mailto:ss8...@att.com>> wrote: Is there a readme or walkthrough of how we can reproduce the demo shown? Or can you share the command used to take Puccini and have it output the bpmn? It appears to be something like -Parse CSAR using Puccini -Output to Clout -Utilize Clout output to the javascript file to transform to bpmn -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#11445): https://lists.onap.org/g/onap-discuss/message/11445 Mute This Topic: https://lists.onap.org/mt/23813337/21656 Group Owner: onap-discuss+ow...@lists.onap.org Unsubscribe: https://lists.onap.org/g/onap-discuss/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
