Comments (5)
paed01
commented on July 21, 2024
I was unable to reproduce the behavior in the referenced test in the latest version. Which is a good thing. But it could also mean that I got it all wrong...
The engine is updated with the new bpmn-elements version. Can you have another go?
If you have a working version of LinkEvent? I would happily accept a PR.
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jonklein
commented on July 21, 2024
I might be doing something wrong, but I was able to reproduce it in the latest version of the engine. Attached is the BPMN file, and below are the logs. The process expects environment.services.log to log out text - I expect to see task1 and task2 logged, but I only get task1.
bpmn-engine:engine <./examples/link.bpmn> execute +0ms
bpmn-engine:bpmn:definitions <Definitions_18a4j13> enter +0ms
bpmn-engine:bpmn:definitions <Definitions_18a4j13> start +0ms
bpmn-engine:bpmn:definitions <Definitions_18a4j13> found 1 processes +3ms
bpmn-engine:bpmn:definitions <Definitions_18a4j13_3a9d8cc6 (Definitions_18a4j13)> execute definition +1ms
bpmn-engine:bpmn:process <Process_0pkt3xj> initialized with executionId <Process_0pkt3xj_1445b30c> +0ms
bpmn-engine:bpmn:process <Process_0pkt3xj> enter +1ms
bpmn-engine:bpmn:process <Process_0pkt3xj> start +0ms
bpmn-engine:bpmn:sequenceflow <SequenceFlow_1uguq0y> init, <StartEvent_1> -> <Task_1eq3n1s> +0ms
bpmn-engine:bpmn:sequenceflow <SequenceFlow_1xz232n> init, <Task_1eq3n1s> -> <IntermediateThrowEvent_0wbsqd7> +0ms
bpmn-engine:bpmn:sequenceflow <SequenceFlow_13btpcm> init, <IntermediateThrowEvent_023keng> -> <Task_1ldwx43> +0ms
bpmn-engine:bpmn:process <Process_0pkt3xj_1445b30c (Process_0pkt3xj)> execute process +24ms
bpmn-engine:bpmn:startevent <StartEvent_1> initialized with executionId <StartEvent_1_3784e097> +0ms
bpmn-engine:bpmn:startevent <IntermediateThrowEvent_023keng> initialized with executionId <IntermediateThrowEvent_023keng_12c44b63> +0ms
bpmn-engine:bpmn:startevent <StartEvent_1> enter +2ms
bpmn-engine:bpmn:startevent <StartEvent_1> format run.start message content +2ms
bpmn-engine:bpmn:startevent <StartEvent_1> completed formatting run.start +0ms
bpmn-engine:bpmn:startevent <StartEvent_1> start +0ms
bpmn-engine:bpmn:startevent <StartEvent_1_3784e097 (StartEvent_1)> execute +2ms
bpmn-engine:bpmn:startevent <StartEvent_1_3784e097 (StartEvent_1)> completed execution +1ms
bpmn-engine:bpmn:sequenceflow <SequenceFlow_1uguq0y_2e853a75 (SequenceFlow_1uguq0y)> take, target <Task_1eq3n1s> +39ms
bpmn-engine:bpmn:scripttask <Task_1eq3n1s> enter +0ms
bpmn-engine:bpmn:scripttask <Task_1eq3n1s> format run.start message content +1ms
bpmn-engine:bpmn:scripttask <Task_1eq3n1s> format run.start message content +0ms
bpmn-engine:bpmn:scripttask <Task_1eq3n1s> completed formatting run.start +0ms
bpmn-engine:bpmn:scripttask <Task_1eq3n1s> start +1ms
bpmn-engine:bpmn:scripttask <Task_1eq3n1s_1b21248b (Task_1eq3n1s)> execute +1ms
*task1*
bpmn-engine:bpmn:scripttask <Task_1eq3n1s_1b21248b (Task_1eq3n1s)> completed execution +3ms
bpmn-engine:bpmn:sequenceflow <SequenceFlow_1xz232n_39fa5ac5 (SequenceFlow_1xz232n)> take, target <IntermediateThrowEvent_0wbsqd7> +45ms
bpmn-engine:bpmn:intermediatethrowevent <IntermediateThrowEvent_0wbsqd7> enter +0ms
bpmn-engine:bpmn:intermediatethrowevent <IntermediateThrowEvent_0wbsqd7> format run.start message content +0ms
bpmn-engine:bpmn:intermediatethrowevent <IntermediateThrowEvent_0wbsqd7> completed formatting run.start +0ms
bpmn-engine:bpmn:intermediatethrowevent <IntermediateThrowEvent_0wbsqd7> start +0ms
bpmn-engine:bpmn:intermediatethrowevent <IntermediateThrowEvent_0wbsqd7_3727726b (IntermediateThrowEvent_0wbsqd7)> execute +2ms
bpmn-engine:bpmn:intermediatethrowevent <IntermediateThrowEvent_0wbsqd7_3727726b (IntermediateThrowEvent_0wbsqd7)> start event definition bpmn:SignalEventDefinition, index 0 +1ms
bpmn-engine:bpmn:intermediatethrowevent <IntermediateThrowEvent_0wbsqd7_3727726b_0 (IntermediateThrowEvent_0wbsqd7)> execute event definition bpmn:SignalEventDefinition, index 0 +1ms
bpmn-engine:bpmn:signaleventdefinition <IntermediateThrowEvent_0wbsqd7_3727726b_0 (IntermediateThrowEvent_0wbsqd7)> throw signal <Signal_0y9ojr4> named Signal_39f64n8 +0ms
bpmn-engine:bpmn:signaleventdefinition <IntermediateThrowEvent_0wbsqd7_3727726b_0 (IntermediateThrowEvent_0wbsqd7)> throw signal <Signal_0y9ojr4> with name: Signal_39f64n8 +0ms
bpmn-engine:bpmn:definitions <Definitions_18a4j13_3a9d8cc6 (Definitions_18a4j13)> signal <Signal_0y9ojr4> event received from <Process_0pkt3xj.IntermediateThrowEvent_0wbsqd7>. Delegating. +59ms
bpmn-engine:bpmn:intermediatethrowevent <IntermediateThrowEvent_0wbsqd7_3727726b_0 (IntermediateThrowEvent_0wbsqd7)> event definition bpmn:SignalEventDefinition completed, index 0 +12ms
bpmn-engine:bpmn:intermediatethrowevent <IntermediateThrowEvent_0wbsqd7_3727726b_0 (IntermediateThrowEvent_0wbsqd7)> completed sub execution +1ms
bpmn-engine:bpmn:intermediatethrowevent <IntermediateThrowEvent_0wbsqd7_3727726b (IntermediateThrowEvent_0wbsqd7)> completed execution +0ms
bpmn-engine:bpmn:startevent <IntermediateThrowEvent_023keng> enter +41ms
bpmn-engine:bpmn:startevent <IntermediateThrowEvent_023keng> format run.start message content +1ms
bpmn-engine:bpmn:startevent <IntermediateThrowEvent_023keng> completed formatting run.start +0ms
bpmn-engine:bpmn:startevent <IntermediateThrowEvent_023keng> start +0ms
bpmn-engine:bpmn:startevent <IntermediateThrowEvent_023keng_12c44b63 (IntermediateThrowEvent_023keng)> execute +1ms
bpmn-engine:bpmn:startevent <IntermediateThrowEvent_023keng_12c44b63 (IntermediateThrowEvent_023keng)> start event definition bpmn:SignalEventDefinition, index 0 +2ms
bpmn-engine:bpmn:startevent <IntermediateThrowEvent_023keng_12c44b63_0 (IntermediateThrowEvent_023keng)> execute event definition bpmn:SignalEventDefinition, index 0 +0ms
bpmn-engine:bpmn:signaleventdefinition <IntermediateThrowEvent_023keng_12c44b63_0 (IntermediateThrowEvent_023keng)> waiting for signal <Signal_0y9ojr4> with name: Signal_39f64n8 +0ms
bpmn-engine:bpmn:process <Process_0pkt3xj_1445b30c (Process_0pkt3xj)> left <StartEvent_1> (bpmn:StartEvent), pending runs 2 [ 'IntermediateThrowEvent_023keng', 'SequenceFlow_1uguq0y' ] +54ms
bpmn-engine:bpmn:process <Process_0pkt3xj_1445b30c (Process_0pkt3xj)> left <Task_1eq3n1s> (bpmn:ScriptTask), pending runs 2 [ 'IntermediateThrowEvent_023keng', 'SequenceFlow_1xz232n' ] +3ms
bpmn-engine:bpmn:process <Process_0pkt3xj_1445b30c (Process_0pkt3xj)> left <IntermediateThrowEvent_0wbsqd7> (bpmn:SignalEventDefinition), pending runs 1 [ 'IntermediateThrowEvent_023keng' ] +0ms
I will gladly submit a PR for LinkEvent when I'm able to get it all working. Thank you for your work and support on this project!
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paed01
commented on July 21, 2024
You are correct, it's a race condition. The first flow completes before the second flow is entered. I have to rethink the signal feature.
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paed01
commented on July 21, 2024
A bumped package is now published on npm.
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jonklein
commented on July 21, 2024
Thank you - I'm able to verify this as fixed.
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Related Issues (20)
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