add benchmark test for baggage (open-telemetry#4468)

* add benchmark test for baggage

Signed-off-by: emdneto <[email protected]>

* ignore pylint

Signed-off-by: emdneto <[email protected]>

---------

Signed-off-by: emdneto <[email protected]>

Author: emdneto

opentelemetry-sdk/benchmarks/test_baggage.py

@@ -0,0 +1,69 @@
+# pylint: disable=redefined-outer-name, invalid-name
+import pytest
+
+from opentelemetry import trace
+from opentelemetry.baggage import (
+    clear,
+    get_all,
+    get_baggage,
+    remove_baggage,
+    set_baggage,
+)
+
+tracer = trace.get_tracer(__name__)
+
+
+@pytest.fixture(params=[10, 100, 1000, 10000])
+def baggage_size(request):
+    return request.param
+
+
+def set_baggage_operation(size=10):
+    with tracer.start_span(name="root span"):
+        ctx = get_all()
+        for i in range(size):
+            ctx = set_baggage(f"foo{i}", f"bar{i}", context=ctx)
+    return ctx
+
+
+def test_set_baggage(benchmark, baggage_size):
+    ctx = benchmark(set_baggage_operation, baggage_size)
+    result = get_all(ctx)
+    assert len(result) == baggage_size
+
+
+def test_get_baggage(benchmark, baggage_size):
+    ctx = set_baggage_operation(baggage_size)
+
+    def get_baggage_operation():
+        return [get_baggage(f"foo{i}", ctx) for i in range(baggage_size)]
+
+    result = benchmark(get_baggage_operation)
+    assert result == [f"bar{i}" for i in range(baggage_size)]
+
+
+def test_remove_baggage(benchmark, baggage_size):
+    ctx = set_baggage_operation(baggage_size)
+
+    def remove_operation():
+        tmp_ctx = ctx
+        for i in range(baggage_size):
+            tmp_ctx = remove_baggage(f"foo{i}", tmp_ctx)
+        return tmp_ctx
+
+    cleared_context = benchmark(remove_operation)
+    result = get_all(cleared_context)
+    # After removing all baggage items, it should be empty.
+    assert len(result) == 0
+
+
+def test_clear_baggage(benchmark, baggage_size):
+    ctx = set_baggage_operation(baggage_size)
+
+    def clear_operation():
+        return clear(ctx)
+
+    cleared_context = benchmark(clear_operation)
+    result = get_all(cleared_context)
+    # After clearing the baggage should be empty.
+    assert len(result) == 0