gustavoschewinski commented on issue #125:
URL: https://github.com/apache/plc4x-extras/issues/125#issuecomment-2315101173
Hello @chrisdutz,
I discovered something interesting. I'm currently running the connector code
locally to test it, and the error remains the same.
The issue is triggered when executing:
- `scraperConfig = builder.build()` in **Plc4xSourceTask**
- Which triggers `public ScraperConfigurationTriggeredImpl build() { return
new ScraperConfigurationTriggeredImpl(sources, jobConfigurations); }`
- And then triggers `@JsonCreator public
ScraperConfigurationTriggeredImpl(@JsonProperty(value = "sources", required =
true) Map<String, String> sources, @JsonProperty(value = "jobs", required =
true) List<JobConfigurationImpl> jobConfigurations) {
checkNoUnreferencedSources(sources, jobConfigurations); this.sources = sources;
this.jobConfigurations = jobConfigurations; }`
Somehow, this trigger is not functioning correctly, and it always produces
the error: "Exception in thread 'main' java.lang.NoClassDefFoundError:
com/fasterxml/jackson/dataformat/yaml/YAMLFactory." I suspect this might be
related to the use of the `@JsonCreator` annotation, which relies on
FasterXML's Jackson library.
Interestingly, if I remove all test scopes when running the code, the
previous FasterXML error disappears (because jackson-dataformat is just in test
scope), the scraping starts, it attempts to poll but then the buffer is empty,
not pooling anything.
```
24-08-28 10:44:53 INFO o.a.p.java.DefaultPlcDriverManager - Registering
driver for Protocol simulated (Simulated PLC4X Datasource)
2024-08-28 10:44:53 INFO o.a.p.j.s.c.t.ScraperConfigurationTriggeredImpl -
Assuming job as triggered job because triggerConfig has been set
2024-08-28 10:44:53 DEBUG o.a.p.j.s.t.t.TriggerConfiguration - Strategy:
SCHEDULED, scheduled ms: 1000
Starting scraper...
2024-08-28 10:44:53 INFO o.a.p.j.s.t.TriggeredScraperImpl - Starting jobs...
2024-08-28 10:44:53 DEBUG o.a.p.j.s.t.TriggeredScraperImpl - Register task
for job simulated-dashboard for conn machineA
(opcua:tcp://Yoshi.lab.mtu-digilab.io:53530/OPCUA/SimulationServer?discovery=false)
at rate 1000 ms
2024-08-28 10:44:53 DEBUG o.a.p.j.s.t.t.TriggerConfiguration - Strategy:
SCHEDULED, scheduled ms: 1000
2024-08-28 10:44:53 INFO o.a.p.j.s.t.TriggeredScraperImpl - Task
TriggeredScraperTask{connectionManager=org.apache.plc4x.java.utils.cache.CachedPlcConnectionManager@672872e1,
jobName='simulated-dashboard', connectionAlias='machineA',
connectionString='opcua:tcp://Yoshi.lab.mtu-digilab.io:53530/OPCUA/SimulationServer?discovery=false',
requestTimeoutMs=2000,
executorService=java.util.concurrent.ThreadPoolExecutor@32910148[Running, pool
size = 0, active threads = 0, queued tasks = 0, completed tasks = 0],
resultHandler=org.apache.plc4x.kafka.Plc4xSourceTask$$Lambda$115/0x00000008400dcc40@3f56875e,
triggerHandler=org.apache.plc4x.java.scraper.triggeredscraper.triggerhandler.TriggerHandlerImpl@2b4bac49}
added to scheduling
2024-08-28 10:44:53 DEBUG o.a.p.j.s.t.TriggeredScraperTask - Trigger for job
simulated-dashboard and device machineA is met ... scraping desired data
Scraper started.
Polling...
2024-08-28 10:44:53 DEBUG o.a.p.j.u.c.CachedPlcConnectionManager - Creating
new connection
Buffer empty. Waiting...500[]
2024-08-28 10:44:54 DEBUG o.a.p.j.s.t.TriggeredScraperImpl -
Job=org.apache.plc4x.java.scraper.triggeredscraper.TriggeredScrapeJobImpl@fd07cbb
Task=TriggeredScraperTask{connectionManager=org.apache.plc4x.java.utils.cache.CachedPlcConnectionManager@672872e1,
jobName='simulated-dashboard', connectionAlias='machineA',
connectionString='opcua:tcp://Yoshi.lab.mtu-digilab.io:53530/OPCUA/SimulationServer?discovery=false',
requestTimeoutMs=2000,
executorService=java.util.concurrent.ThreadPoolExecutor@32910148[Running, pool
size = 1, active threads = 1, queued tasks = 0, completed tasks = 0],
resultHandler=org.apache.plc4x.kafka.Plc4xSourceTask$$Lambda$115/0x00000008400dcc40@3f56875e,
triggerHandler=org.apache.plc4x.java.scraper.triggeredscraper.triggerhandler.TriggerHandlerImpl@2b4bac49}
2024-08-28 10:44:54 DEBUG o.a.p.j.s.t.TriggeredScraperImpl - Task=Trigg
```
After some time, the scraper just stops:
```
2024-08-28 10:44:54 INFO o.a.p.j.s.t.TriggeredScraperImpl - Stopping
scraper...
2024-08-28 10:44:54 DEBUG o.a.p.j.s.t.TriggeredScraperImpl - Stopping task
TriggeredScraperTask{connectionManager=org.apache.plc4x.java.utils.cache.CachedPlcConnectionManager@672872e1,
jobName='simulated-dashboard', connectionAlias='machineA',
connectionString='opcua:tcp://Yoshi.lab.mtu-digilab.io:53530/OPCUA/SimulationServer?discovery=false',
requestTimeoutMs=2000,
executorService=java.util.concurrent.ThreadPoolExecutor@32910148[Running, pool
size = 1, active threads = 1, queued tasks = 0, completed tasks = 0],
resultHandler=org.apache.plc4x.kafka.Plc4xSourceTask$$Lambda$115/0x00000008400dcc40@3f56875e,
triggerHandler=org.apache.plc4x.java.scraper.triggeredscraper.triggerhandler.TriggerHandlerImpl@2b4bac49}...
2024-08-28 10:44:54 WARN o.a.p.j.s.t.TriggeredScraperTask - Exception
during scraping of Job simulated-dashboard, Connection-Alias machineA:
Error-message: null - for stack-trace change logging to DEBUG
```
Do you have any ideas on what might be causing this issue? :)
Thanks a lot in advance.
Best,
Gustavo.
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