mirror of
https://github.com/open-telemetry/opentelemetry-python-contrib.git
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547 lines
20 KiB
Python
547 lines
20 KiB
Python
# Copyright The OpenTelemetry Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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from dataclasses import dataclass
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from importlib import import_module, reload
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from typing import Any, Callable, Dict
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from unittest import mock
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from opentelemetry import propagate
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from opentelemetry.environment_variables import OTEL_PROPAGATORS
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from opentelemetry.instrumentation.aws_lambda import (
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_HANDLER,
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_X_AMZN_TRACE_ID,
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OTEL_INSTRUMENTATION_AWS_LAMBDA_FLUSH_TIMEOUT,
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AwsLambdaInstrumentor,
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)
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from opentelemetry.propagate import get_global_textmap
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from opentelemetry.propagators.aws.aws_xray_propagator import (
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TRACE_ID_FIRST_PART_LENGTH,
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TRACE_ID_VERSION,
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)
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from opentelemetry.semconv.resource import ResourceAttributes
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from opentelemetry.semconv.trace import SpanAttributes
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from opentelemetry.test.test_base import TestBase
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from opentelemetry.trace import NoOpTracerProvider, SpanKind, StatusCode
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from opentelemetry.trace.propagation.tracecontext import (
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TraceContextTextMapPropagator,
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)
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from opentelemetry.util._importlib_metadata import entry_points
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from .mocks.api_gateway_http_api_event import (
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MOCK_LAMBDA_API_GATEWAY_HTTP_API_EVENT,
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)
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from .mocks.api_gateway_proxy_event import MOCK_LAMBDA_API_GATEWAY_PROXY_EVENT
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class MockLambdaContext:
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def __init__(self, aws_request_id, invoked_function_arn):
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self.invoked_function_arn = invoked_function_arn
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self.aws_request_id = aws_request_id
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MOCK_LAMBDA_CONTEXT = MockLambdaContext(
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aws_request_id="mock_aws_request_id",
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invoked_function_arn="arn:aws:lambda:us-east-1:123456:function:myfunction:myalias",
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)
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MOCK_XRAY_TRACE_ID = 0x5FB7331105E8BB83207FA31D4D9CDB4C
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MOCK_XRAY_TRACE_ID_STR = f"{MOCK_XRAY_TRACE_ID:x}"
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MOCK_XRAY_PARENT_SPAN_ID = 0x3328B8445A6DBAD2
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MOCK_XRAY_TRACE_CONTEXT_COMMON = f"Root={TRACE_ID_VERSION}-{MOCK_XRAY_TRACE_ID_STR[:TRACE_ID_FIRST_PART_LENGTH]}-{MOCK_XRAY_TRACE_ID_STR[TRACE_ID_FIRST_PART_LENGTH:]};Parent={MOCK_XRAY_PARENT_SPAN_ID:x}"
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MOCK_XRAY_TRACE_CONTEXT_SAMPLED = f"{MOCK_XRAY_TRACE_CONTEXT_COMMON};Sampled=1"
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MOCK_XRAY_TRACE_CONTEXT_NOT_SAMPLED = (
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f"{MOCK_XRAY_TRACE_CONTEXT_COMMON};Sampled=0"
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)
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# See more:
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# https://www.w3.org/TR/trace-context/#examples-of-http-traceparent-headers
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MOCK_W3C_TRACE_ID = 0x5CE0E9A56015FEC5AADFA328AE398115
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MOCK_W3C_PARENT_SPAN_ID = 0xAB54A98CEB1F0AD2
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MOCK_W3C_TRACE_CONTEXT_SAMPLED = (
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f"00-{MOCK_W3C_TRACE_ID:x}-{MOCK_W3C_PARENT_SPAN_ID:x}-01"
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)
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MOCK_W3C_TRACE_STATE_KEY = "vendor_specific_key"
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MOCK_W3C_TRACE_STATE_VALUE = "test_value"
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def mock_execute_lambda(event=None):
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"""Mocks the AWS Lambda execution.
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NOTE: We don't use `moto`'s `mock_lambda` because we are not instrumenting
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calls to AWS Lambda using the AWS SDK. Instead, we are instrumenting AWS
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Lambda itself.
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See more:
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https://docs.aws.amazon.com/lambda/latest/dg/runtimes-modify.html#runtime-wrapper
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Args:
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event: The Lambda event which may or may not be used by instrumentation.
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"""
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module_name, handler_name = os.environ[_HANDLER].rsplit(".", 1)
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handler_module = import_module(module_name.replace("/", "."))
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getattr(handler_module, handler_name)(event, MOCK_LAMBDA_CONTEXT)
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class TestAwsLambdaInstrumentor(TestBase):
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"""AWS Lambda Instrumentation Testsuite"""
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def setUp(self):
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super().setUp()
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self.common_env_patch = mock.patch.dict(
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"os.environ",
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{_HANDLER: "tests.mocks.lambda_function.handler"},
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)
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self.common_env_patch.start()
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# NOTE: Whether AwsLambdaInstrumentor().instrument() is run is decided
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# by each test case. It depends on if the test is for auto or manual
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# instrumentation.
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def tearDown(self):
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super().tearDown()
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self.common_env_patch.stop()
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AwsLambdaInstrumentor().uninstrument()
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def test_active_tracing(self):
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test_env_patch = mock.patch.dict(
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"os.environ",
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{
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**os.environ,
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# Using Active tracing
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OTEL_PROPAGATORS: "xray-lambda",
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_X_AMZN_TRACE_ID: MOCK_XRAY_TRACE_CONTEXT_SAMPLED,
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},
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)
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test_env_patch.start()
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reload(propagate)
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AwsLambdaInstrumentor().instrument()
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mock_execute_lambda()
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spans = self.memory_exporter.get_finished_spans()
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assert spans
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self.assertEqual(len(spans), 1)
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span = spans[0]
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self.assertEqual(span.name, os.environ[_HANDLER])
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self.assertEqual(span.get_span_context().trace_id, MOCK_XRAY_TRACE_ID)
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self.assertEqual(span.kind, SpanKind.SERVER)
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self.assertSpanHasAttributes(
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span,
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{
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SpanAttributes.CLOUD_RESOURCE_ID: MOCK_LAMBDA_CONTEXT.invoked_function_arn,
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SpanAttributes.FAAS_INVOCATION_ID: MOCK_LAMBDA_CONTEXT.aws_request_id,
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ResourceAttributes.CLOUD_ACCOUNT_ID: MOCK_LAMBDA_CONTEXT.invoked_function_arn.split(
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":"
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)[
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4
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],
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},
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)
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parent_context = span.parent
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self.assertEqual(
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parent_context.trace_id, span.get_span_context().trace_id
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)
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self.assertEqual(parent_context.span_id, MOCK_XRAY_PARENT_SPAN_ID)
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self.assertTrue(parent_context.is_remote)
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test_env_patch.stop()
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def test_parent_context_from_lambda_event(self):
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@dataclass
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class TestCase:
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name: str
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custom_extractor: Callable[[Any], None]
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context: Dict
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expected_traceid: int
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expected_parentid: int
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xray_traceid: str
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expected_state_value: str = None
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expected_trace_state_len: int = 0
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propagators: str = "tracecontext"
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def custom_event_context_extractor(lambda_event):
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return get_global_textmap().extract(lambda_event["foo"]["headers"])
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tests = [
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TestCase(
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name="no_custom_extractor",
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custom_extractor=None,
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context={
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"headers": {
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TraceContextTextMapPropagator._TRACEPARENT_HEADER_NAME: MOCK_W3C_TRACE_CONTEXT_SAMPLED,
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TraceContextTextMapPropagator._TRACESTATE_HEADER_NAME: f"{MOCK_W3C_TRACE_STATE_KEY}={MOCK_W3C_TRACE_STATE_VALUE},foo=1,bar=2",
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}
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},
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expected_traceid=MOCK_W3C_TRACE_ID,
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expected_parentid=MOCK_W3C_PARENT_SPAN_ID,
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expected_trace_state_len=3,
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expected_state_value=MOCK_W3C_TRACE_STATE_VALUE,
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xray_traceid=MOCK_XRAY_TRACE_CONTEXT_NOT_SAMPLED,
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),
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TestCase(
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name="custom_extractor_not_sampled_xray",
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custom_extractor=custom_event_context_extractor,
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context={
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"foo": {
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"headers": {
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TraceContextTextMapPropagator._TRACEPARENT_HEADER_NAME: MOCK_W3C_TRACE_CONTEXT_SAMPLED,
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TraceContextTextMapPropagator._TRACESTATE_HEADER_NAME: f"{MOCK_W3C_TRACE_STATE_KEY}={MOCK_W3C_TRACE_STATE_VALUE},foo=1,bar=2",
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}
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}
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},
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expected_traceid=MOCK_W3C_TRACE_ID,
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expected_parentid=MOCK_W3C_PARENT_SPAN_ID,
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expected_trace_state_len=3,
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expected_state_value=MOCK_W3C_TRACE_STATE_VALUE,
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xray_traceid=MOCK_XRAY_TRACE_CONTEXT_NOT_SAMPLED,
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),
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TestCase(
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name="custom_extractor_sampled_xray",
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custom_extractor=custom_event_context_extractor,
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context={
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"foo": {
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"headers": {
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TraceContextTextMapPropagator._TRACEPARENT_HEADER_NAME: MOCK_W3C_TRACE_CONTEXT_SAMPLED,
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TraceContextTextMapPropagator._TRACESTATE_HEADER_NAME: f"{MOCK_W3C_TRACE_STATE_KEY}={MOCK_W3C_TRACE_STATE_VALUE},foo=1,bar=2",
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}
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}
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},
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expected_traceid=MOCK_XRAY_TRACE_ID,
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expected_parentid=MOCK_XRAY_PARENT_SPAN_ID,
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xray_traceid=MOCK_XRAY_TRACE_CONTEXT_SAMPLED,
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propagators="xray-lambda",
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),
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TestCase(
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name="custom_extractor_sampled_xray",
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custom_extractor=custom_event_context_extractor,
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context={
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"foo": {
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"headers": {
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TraceContextTextMapPropagator._TRACEPARENT_HEADER_NAME: MOCK_W3C_TRACE_CONTEXT_SAMPLED,
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TraceContextTextMapPropagator._TRACESTATE_HEADER_NAME: f"{MOCK_W3C_TRACE_STATE_KEY}={MOCK_W3C_TRACE_STATE_VALUE},foo=1,bar=2",
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}
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}
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},
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expected_traceid=MOCK_W3C_TRACE_ID,
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expected_parentid=MOCK_W3C_PARENT_SPAN_ID,
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expected_trace_state_len=3,
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expected_state_value=MOCK_W3C_TRACE_STATE_VALUE,
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xray_traceid=MOCK_XRAY_TRACE_CONTEXT_SAMPLED,
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),
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TestCase(
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name="no_custom_extractor_xray",
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custom_extractor=None,
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context={
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"headers": {
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TraceContextTextMapPropagator._TRACEPARENT_HEADER_NAME: MOCK_W3C_TRACE_CONTEXT_SAMPLED,
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TraceContextTextMapPropagator._TRACESTATE_HEADER_NAME: f"{MOCK_W3C_TRACE_STATE_KEY}={MOCK_W3C_TRACE_STATE_VALUE},foo=1,bar=2",
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}
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},
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expected_traceid=MOCK_W3C_TRACE_ID,
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expected_parentid=MOCK_W3C_PARENT_SPAN_ID,
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expected_trace_state_len=3,
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expected_state_value=MOCK_W3C_TRACE_STATE_VALUE,
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xray_traceid=MOCK_XRAY_TRACE_CONTEXT_SAMPLED,
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),
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]
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for test in tests:
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test_env_patch = mock.patch.dict(
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"os.environ",
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{
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**os.environ,
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# NOT Active Tracing
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_X_AMZN_TRACE_ID: test.xray_traceid,
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OTEL_PROPAGATORS: test.propagators,
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},
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)
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test_env_patch.start()
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reload(propagate)
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AwsLambdaInstrumentor().instrument(
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event_context_extractor=test.custom_extractor,
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)
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mock_execute_lambda(test.context)
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spans = self.memory_exporter.get_finished_spans()
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assert spans
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self.assertEqual(len(spans), 1)
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span = spans[0]
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self.assertEqual(
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span.get_span_context().trace_id, test.expected_traceid
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)
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parent_context = span.parent
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self.assertEqual(
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parent_context.trace_id, span.get_span_context().trace_id
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)
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self.assertEqual(parent_context.span_id, test.expected_parentid)
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self.assertEqual(
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len(parent_context.trace_state), test.expected_trace_state_len
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)
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self.assertEqual(
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parent_context.trace_state.get(MOCK_W3C_TRACE_STATE_KEY),
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test.expected_state_value,
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)
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self.assertTrue(parent_context.is_remote)
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self.memory_exporter.clear()
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AwsLambdaInstrumentor().uninstrument()
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test_env_patch.stop()
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def test_lambda_no_error_with_invalid_flush_timeout(self):
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test_env_patch = mock.patch.dict(
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"os.environ",
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{
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**os.environ,
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# NOT Active Tracing
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_X_AMZN_TRACE_ID: MOCK_XRAY_TRACE_CONTEXT_NOT_SAMPLED,
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# NOT using the X-Ray Propagator
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OTEL_PROPAGATORS: "tracecontext",
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OTEL_INSTRUMENTATION_AWS_LAMBDA_FLUSH_TIMEOUT: "invalid-timeout-string",
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},
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)
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test_env_patch.start()
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AwsLambdaInstrumentor().instrument()
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mock_execute_lambda()
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spans = self.memory_exporter.get_finished_spans()
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assert spans
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self.assertEqual(len(spans), 1)
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test_env_patch.stop()
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def test_lambda_handles_multiple_consumers(self):
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test_env_patch = mock.patch.dict(
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"os.environ",
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{
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**os.environ,
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# NOT Active Tracing
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_X_AMZN_TRACE_ID: MOCK_XRAY_TRACE_CONTEXT_NOT_SAMPLED,
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# NOT using the X-Ray Propagator
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OTEL_PROPAGATORS: "tracecontext",
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},
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)
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test_env_patch.start()
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AwsLambdaInstrumentor().instrument()
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mock_execute_lambda({"Records": [{"eventSource": "aws:sqs"}]})
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mock_execute_lambda({"Records": [{"eventSource": "aws:s3"}]})
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mock_execute_lambda({"Records": [{"EventSource": "aws:sns"}]})
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mock_execute_lambda({"Records": [{"eventSource": "aws:dynamodb"}]})
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spans = self.memory_exporter.get_finished_spans()
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assert spans
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assert len(spans) == 4
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for span in spans:
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assert span.kind == SpanKind.CONSUMER
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test_env_patch.stop()
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def test_lambda_handles_invalid_event_source(self):
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test_env_patch = mock.patch.dict(
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"os.environ",
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{
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**os.environ,
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# NOT Active Tracing
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_X_AMZN_TRACE_ID: MOCK_XRAY_TRACE_CONTEXT_NOT_SAMPLED,
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# NOT using the X-Ray Propagator
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OTEL_PROPAGATORS: "tracecontext",
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},
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)
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test_env_patch.start()
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reload(propagate)
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AwsLambdaInstrumentor().instrument()
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mock_execute_lambda({"Records": [{"eventSource": "invalid_source"}]})
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spans = self.memory_exporter.get_finished_spans()
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assert spans
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assert len(spans) == 1
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assert (
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spans[0].kind == SpanKind.SERVER
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) # Default to SERVER for unknown sources
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test_env_patch.stop()
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def test_api_gateway_proxy_event_sets_attributes(self):
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handler_patch = mock.patch.dict(
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"os.environ",
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{_HANDLER: "tests.mocks.lambda_function.rest_api_handler"},
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)
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handler_patch.start()
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AwsLambdaInstrumentor().instrument()
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mock_execute_lambda(MOCK_LAMBDA_API_GATEWAY_PROXY_EVENT)
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span = self.memory_exporter.get_finished_spans()[0]
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self.assertSpanHasAttributes(
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span,
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{
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SpanAttributes.FAAS_TRIGGER: "http",
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SpanAttributes.HTTP_METHOD: "POST",
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SpanAttributes.HTTP_ROUTE: "/{proxy+}",
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SpanAttributes.HTTP_TARGET: "/{proxy+}?foo=bar",
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SpanAttributes.NET_HOST_NAME: "1234567890.execute-api.us-east-1.amazonaws.com",
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SpanAttributes.HTTP_USER_AGENT: "Custom User Agent String",
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SpanAttributes.HTTP_SCHEME: "https",
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SpanAttributes.HTTP_STATUS_CODE: 200,
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},
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)
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def test_api_gateway_http_api_proxy_event_sets_attributes(self):
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AwsLambdaInstrumentor().instrument()
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mock_execute_lambda(MOCK_LAMBDA_API_GATEWAY_HTTP_API_EVENT)
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span = self.memory_exporter.get_finished_spans()[0]
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self.assertSpanHasAttributes(
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span,
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{
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SpanAttributes.FAAS_TRIGGER: "http",
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SpanAttributes.HTTP_METHOD: "POST",
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SpanAttributes.HTTP_ROUTE: "/path/to/resource",
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SpanAttributes.HTTP_TARGET: "/path/to/resource?parameter1=value1¶meter1=value2¶meter2=value",
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SpanAttributes.NET_HOST_NAME: "id.execute-api.us-east-1.amazonaws.com",
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SpanAttributes.HTTP_USER_AGENT: "agent",
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},
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)
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def test_lambda_handles_list_event(self):
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AwsLambdaInstrumentor().instrument()
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mock_execute_lambda([{"message": "test"}])
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spans = self.memory_exporter.get_finished_spans()
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assert spans
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def test_lambda_handles_handler_exception(self):
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exc_env_patch = mock.patch.dict(
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"os.environ",
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{_HANDLER: "tests.mocks.lambda_function.handler_exc"},
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)
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exc_env_patch.start()
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AwsLambdaInstrumentor().instrument()
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# instrumentor re-raises the exception
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with self.assertRaises(Exception):
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mock_execute_lambda()
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spans = self.memory_exporter.get_finished_spans()
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self.assertEqual(len(spans), 1)
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span = spans[0]
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self.assertEqual(span.status.status_code, StatusCode.ERROR)
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self.assertEqual(len(span.events), 1)
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|
event = span.events[0]
|
|
self.assertEqual(event.name, "exception")
|
|
|
|
exc_env_patch.stop()
|
|
|
|
def test_lambda_handles_handler_exception_with_api_gateway_proxy_event(
|
|
self,
|
|
):
|
|
exc_env_patch = mock.patch.dict(
|
|
"os.environ",
|
|
{_HANDLER: "tests.mocks.lambda_function.handler_exc"},
|
|
)
|
|
exc_env_patch.start()
|
|
AwsLambdaInstrumentor().instrument()
|
|
# instrumentor re-raises the exception
|
|
with self.assertRaises(Exception):
|
|
mock_execute_lambda(
|
|
{"requestContext": {"http": {"method": "GET"}}}
|
|
)
|
|
|
|
spans = self.memory_exporter.get_finished_spans()
|
|
self.assertEqual(len(spans), 1)
|
|
span = spans[0]
|
|
self.assertEqual(span.status.status_code, StatusCode.ERROR)
|
|
self.assertEqual(len(span.events), 1)
|
|
event = span.events[0]
|
|
self.assertEqual(event.name, "exception")
|
|
|
|
exc_env_patch.stop()
|
|
|
|
def test_lambda_handles_should_do_nothing_when_environment_variables_not_present(
|
|
self,
|
|
):
|
|
exc_env_patch = mock.patch.dict(
|
|
"os.environ",
|
|
{_HANDLER: ""},
|
|
)
|
|
exc_env_patch.start()
|
|
AwsLambdaInstrumentor().instrument()
|
|
|
|
spans = self.memory_exporter.get_finished_spans()
|
|
self.assertEqual(len(spans), 0)
|
|
exc_env_patch.stop()
|
|
|
|
def test_uninstrument(self):
|
|
AwsLambdaInstrumentor().instrument()
|
|
|
|
mock_execute_lambda(MOCK_LAMBDA_API_GATEWAY_HTTP_API_EVENT)
|
|
|
|
spans = self.memory_exporter.get_finished_spans()
|
|
self.assertEqual(len(spans), 1)
|
|
|
|
self.memory_exporter.clear()
|
|
AwsLambdaInstrumentor().uninstrument()
|
|
|
|
mock_execute_lambda(MOCK_LAMBDA_API_GATEWAY_HTTP_API_EVENT)
|
|
spans = self.memory_exporter.get_finished_spans()
|
|
self.assertEqual(len(spans), 0)
|
|
|
|
def test_no_op_tracer_provider(self):
|
|
tracer_provider = NoOpTracerProvider()
|
|
AwsLambdaInstrumentor().instrument(tracer_provider=tracer_provider)
|
|
|
|
mock_execute_lambda(MOCK_LAMBDA_API_GATEWAY_HTTP_API_EVENT)
|
|
spans = self.memory_exporter.get_finished_spans()
|
|
assert spans is not None
|
|
self.assertEqual(len(spans), 0)
|
|
|
|
def test_load_entry_point(self):
|
|
self.assertIs(
|
|
next(
|
|
iter(
|
|
entry_points(
|
|
group="opentelemetry_instrumentor", name="aws-lambda"
|
|
)
|
|
)
|
|
).load(),
|
|
AwsLambdaInstrumentor,
|
|
)
|