Modify logic to add providers when azure monitor config is disabled

[Radhika Gupta (rads-1996)]

No description provided.

[Copilot]

Pull request overview

This PR updates use_microsoft_opentelemetry() orchestration so that when Azure Monitor is explicitly disabled, the distro still initializes “bare” OpenTelemetry providers, while Azure Monitor-enabled scenarios delegate provider creation/configuration to Azure Monitor setup.

Changes:

• Move core provider initialization to the enable_azure_monitor=False path (create tracing/metrics/logging providers even without an exporter).
• Delegate Azure Monitor-enabled setup entirely to _setup_azure_monitor(**merged) and run instrumentations after providers are set.
• Update unit tests and add a changelog entry reflecting the new behavior.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
src/microsoft/opentelemetry/_distro.py	Restructures provider initialization vs. Azure Monitor setup and reorders instrumentation setup.
tests/test_distro.py	Updates mocks/assertions to match the new orchestration and disabled-Azure-Monitor provider behavior.
CHANGELOG.md	Documents the behavior change in release notes.

Comments suppressed due to low confidence (1)

tests/test_distro.py:167

• test_setup_tracing_adds_span_processors now calls _setup_tracing() without patching set_tracer_provider, so it mutates global OpenTelemetry state and can make this test order-dependent. It also doesn’t assert that the span processor was actually added (despite the comment). Patch set_tracer_provider (as in the previous test) and assert that the created provider contains the supplied processor.

    def test_setup_tracing_adds_span_processors(self):
        """_setup_tracing adds user-supplied span processors."""
        sp = MagicMock()
        tp = _setup_tracing(TEST_RESOURCE, {"span_processors": [sp]})
        # Processor is in the provider's active span processors
        self.assertIsInstance(tp, TracerProvider)

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