Support for Python SDK 3.0.0

[antonpirker]

[work in progress]

Sentry SDK 3.0.0 has massive changes on how the data flows through the SDK compared to 2.x. (3.0 uses Opentelementry under the hood to create spans)

Some APIs in 3.0 is not backwards compatible with 2.x so we need to change a lot of call sites.

Still ToDo (not an exhaustive list):

• remove custom_sampling_context everywhere in code base (given to spans)
• set_attribute type NOT a dict. (search for TODO-anton in PR files changed)
• attributes in start_span can NOT be a dict.
• change set_span_data() to set_span_attribute() but check for value NOT be a dict.

What this PR does:

• removed propagate_hub=True from ThreadingIntegration
• removed the @mmetrics_noop decorator, because there are no metrics anymore only span.data, so we do not need it.
• moved sampled=False from assigning to a span into the start_span() call.
• replaces span.set_data with span.set_attribute with the same params
• changed one scope.add_attachment to sentry_sdk.add_attachment
• changed all .start_transaction() to .start_span() (without ever setting only_if_parent)
• changed custom_sampling_context param in .start_span() to attributes
• changed one continue_trace to the new context manager.
• removed helper src/sentry/utils/sdk.py::set_measurement() because it is not used in sentry.
• replaced scope.transaction with scope.root_span
• replaced sentry_sdk.Scope.get_*_scope() with sentry_sdk.get_*_scope()

[codecov]

❌ 119 Tests Failed:

Tests completed	Failed	Passed	Skipped
24885	119	24766	199

View the top 3 failed test(s) by shortest run time

tests.sentry.taskworker.test_worker::test_child_process_terminate_task

Stack Traces | 0.076s run time

#x1B[1m#x1B[.../sentry/taskworker/test_worker.py#x1B[0m:516: in test_child_process_terminate_task
    assert type(mock_capture.call_args.args[0]) is ProcessingDeadlineExceeded
#x1B[1m#x1B[31mE   assert <class 'TypeError'> is ProcessingDeadlineExceeded#x1B[0m
#x1B[1m#x1B[31mE    +  where <class 'TypeError'> = type(TypeError("Span.__init__() got an unexpected keyword argument 'environ_or_headers'"))#x1B[0m

tests.sentry.taskworker.test_worker::test_child_process_unknown_task

Stack Traces | 0.083s run time

#x1B[1m#x1B[.../sentry/taskworker/test_worker.py#x1B[0m:424: in test_child_process_unknown_task
    assert result.status == TASK_ACTIVATION_STATUS_COMPLETE
#x1B[1m#x1B[31mE   AssertionError: assert 3 == 5#x1B[0m
#x1B[1m#x1B[31mE    +  where 3 = ProcessingResult(task_id='111', status=3).status#x1B[0m

tests.sentry.taskworker.test_worker::test_child_process_retry_task

Stack Traces | 0.116s run time

#x1B[1m#x1B[.../sentry/taskworker/test_worker.py#x1B[0m:354: in test_child_process_retry_task
    assert result.status == TASK_ACTIVATION_STATUS_RETRY
#x1B[1m#x1B[31mE   AssertionError: assert 3 == 4#x1B[0m
#x1B[1m#x1B[31mE    +  where 3 = ProcessingResult(task_id='222', status=3).status#x1B[0m

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