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https://github.com/open-telemetry/opentelemetry-python-contrib.git
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671aea32f9
* Add instrumentation for AWS Lambda Service - Implementation * Lambda is CONSUMER SQS trace if 'Records' key in Lambda event * More robust check of SQS by indexing and catching * Explicitly catch errors we expect when determinig if SQS triggered Lambda
248 lines
8.4 KiB
Python
248 lines
8.4 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 importlib import import_module
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from unittest import mock
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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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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 SpanKind
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from opentelemetry.trace.propagation.tracecontext import (
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TraceContextTextMapPropagator,
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)
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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://mock-lambda-function-arn",
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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", {_HANDLER: "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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_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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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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ResourceAttributes.FAAS_ID: MOCK_LAMBDA_CONTEXT.invoked_function_arn,
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SpanAttributes.FAAS_EXECUTION: MOCK_LAMBDA_CONTEXT.aws_request_id,
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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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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(
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{
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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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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.get_span_context().trace_id, MOCK_W3C_TRACE_ID)
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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_W3C_PARENT_SPAN_ID)
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self.assertEqual(len(parent_context.trace_state), 3)
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self.assertEqual(
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parent_context.trace_state.get(MOCK_W3C_TRACE_STATE_KEY),
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MOCK_W3C_TRACE_STATE_VALUE,
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)
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self.assertTrue(parent_context.is_remote)
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test_env_patch.stop()
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def test_using_custom_extractor(self):
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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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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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event_context_extractor=custom_event_context_extractor,
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)
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mock_execute_lambda(
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{
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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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)
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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.get_span_context().trace_id, MOCK_W3C_TRACE_ID)
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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_W3C_PARENT_SPAN_ID)
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self.assertEqual(len(parent_context.trace_state), 3)
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self.assertEqual(
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parent_context.trace_state.get(MOCK_W3C_TRACE_STATE_KEY),
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MOCK_W3C_TRACE_STATE_VALUE,
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)
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self.assertTrue(parent_context.is_remote)
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test_env_patch.stop()
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