[python] Fix database error handler about no datasource name

[zhongjiajie]

The original code show too many unrelated log when database name
do not exists. BTW, it would continue the code when error miss.
This patch is try to fix it.

close: #7616

[codecov-commenter]

Codecov Report

Merging #7631 (567039d) into dev (46c39cd) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##                dev    #7631      +/-   ##
============================================
- Coverage     41.03%   41.00%   -0.03%     
+ Complexity     3696     3695       -1     
============================================
  Files           637      637              
  Lines         27025    27044      +19     
  Branches       3063     3067       +4     
============================================
  Hits          11090    11090              
- Misses        14867    14885      +18     
- Partials       1068     1069       +1     

Impacted Files	Coverage Δ
...inscheduler/api/controller/ExecutorController.java	10.00% <0.00%> (-15.00%)	⬇️
...dolphinscheduler/remote/future/ResponseFuture.java	81.96% <0.00%> (-1.64%)	⬇️
.../org/apache/dolphinscheduler/api/enums/Status.java	100.00% <0.00%> (ø)

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[zhongjiajie]

@devosend PTAL, if you have time, thanks.

[zhongjiajie]

I here allow it raise error base on py4j jave gateway server track stack, and I directly using chaining error message for more easy location the error. You could see in keyword During handling of the above exception, another exception occurred

Here it is an example

Traceback (most recent call last):
  File "/Users/zhongjiajie/Documents/program/dolphinscheduler/dolphinscheduler-python/pydolphinscheduler/src/pydolphinscheduler/core/database.py", line 59, in get_database_info
    self._database = gateway.entry_point.getDatasourceInfo(name)
  File "/Users/zhongjiajie/.virtualenvs/pydolphinschduler/lib/python3.8/site-packages/py4j/java_gateway.py", line 1309, in __call__
    return_value = get_return_value(
  File "/Users/zhongjiajie/.virtualenvs/pydolphinschduler/lib/python3.8/site-packages/py4j/protocol.py", line 326, in get_return_value
    raise Py4JJavaError(
py4j.protocol.Py4JJavaError: An error occurred while calling t.getDatasourceInfo.
: java.lang.IllegalArgumentException: Can not find any datasource by name first_mysql
	at org.apache.dolphinscheduler.server.PythonGatewayServer.getDatasourceInfo(PythonGatewayServer.java:398)
	at sun.reflect.GeneratedMethodAccessor187.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
	at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
	at py4j.Gateway.invoke(Gateway.java:282)
	at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
	at py4j.commands.CallCommand.execute(CallCommand.java:79)
	at py4j.GatewayConnection.run(GatewayConnection.java:238)
	at java.lang.Thread.run(Thread.java:748)


During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/zhongjiajie/Documents/program/dolphinscheduler/dolphinscheduler-python/pydolphinscheduler/examples/task_datax_example.py", line 94, in <module>
    pd.run()
  File "/Users/zhongjiajie/Documents/program/dolphinscheduler/dolphinscheduler-python/pydolphinscheduler/src/pydolphinscheduler/core/process_definition.py", line 325, in run
    self.submit()
  File "/Users/zhongjiajie/Documents/program/dolphinscheduler/dolphinscheduler-python/pydolphinscheduler/src/pydolphinscheduler/core/process_definition.py", line 377, in submit
    json.dumps(self.task_definition_json),
  File "/Users/zhongjiajie/Documents/program/dolphinscheduler/dolphinscheduler-python/pydolphinscheduler/src/pydolphinscheduler/core/process_definition.py", line 215, in task_definition_json
    return [task.get_define() for task in self.tasks.values()]
  File "/Users/zhongjiajie/Documents/program/dolphinscheduler/dolphinscheduler-python/pydolphinscheduler/src/pydolphinscheduler/core/process_definition.py", line 215, in <listcomp>
    return [task.get_define() for task in self.tasks.values()]
  File "/Users/zhongjiajie/Documents/program/dolphinscheduler/dolphinscheduler-python/pydolphinscheduler/src/pydolphinscheduler/core/base.py", line 69, in get_define
    content = self.get_define_custom(camel_attr, self._DEFINE_ATTR)
  File "/Users/zhongjiajie/Documents/program/dolphinscheduler/dolphinscheduler-python/pydolphinscheduler/src/pydolphinscheduler/core/base.py", line 56, in get_define_custom
    val = getattr(self, attr, None)
  File "/Users/zhongjiajie/Documents/program/dolphinscheduler/dolphinscheduler-python/pydolphinscheduler/src/pydolphinscheduler/tasks/datax.py", line 116, in task_params
    datasource = Database(self.datasource_name, "dsType", "dataSource")
  File "/Users/zhongjiajie/Documents/program/dolphinscheduler/dolphinscheduler-python/pydolphinscheduler/src/pydolphinscheduler/core/database.py", line 39, in __init__
    self[type_key] = self.database_type
  File "/Users/zhongjiajie/Documents/program/dolphinscheduler/dolphinscheduler-python/pydolphinscheduler/src/pydolphinscheduler/core/database.py", line 45, in database_type
    return self.get_database_info(self.database_name).get("type")
  File "/Users/zhongjiajie/Documents/program/dolphinscheduler/dolphinscheduler-python/pydolphinscheduler/src/pydolphinscheduler/core/database.py", line 62, in get_database_info
    raise PyDSParamException(str(ex.java_exception))
pydolphinscheduler.exceptions.PyDSParamException: java.lang.IllegalArgumentException: Can not find any datasource by name first_mysql

Process finished with exit code 1

[zhongjiajie]

PTAL @devosend

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication

[devosend]

PTAL @devosend

LGTM @zhongjiajie

[CalvinKirs]

LGTM

[zhongjiajie]

Thanks