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test_tracing.py
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import copy
import functools
import json
import traceback
import pytest
import os
import unittest
from unittest.mock import Mock, patch, call
import ddtrace
from ddtrace.trace import tracer
from ddtrace.trace import Context
from ddtrace._trace._span_pointer import _SpanPointer
from ddtrace._trace._span_pointer import _SpanPointerDirection
from ddtrace._trace._span_pointer import _SpanPointerDescription
from datadog_lambda.constants import (
SamplingPriority,
TraceHeader,
TraceContextSource,
XraySubsegment,
)
from datadog_lambda.tracing import (
HIGHER_64_BITS,
LOWER_64_BITS,
_deterministic_sha256_hash,
create_inferred_span,
extract_dd_trace_context,
create_dd_dummy_metadata_subsegment,
create_function_execution_span,
get_dd_trace_context,
mark_trace_as_error_for_5xx_responses,
set_correlation_ids,
set_dd_trace_py_root,
_convert_xray_trace_id,
_convert_xray_entity_id,
_convert_xray_sampling,
InferredSpanInfo,
create_service_mapping,
determine_service_name,
service_mapping as global_service_mapping,
propagator,
emit_telemetry_on_exception_outside_of_handler,
is_legacy_lambda_step_function,
)
from datadog_lambda.trigger import EventTypes
from tests.utils import get_mock_context
function_arn = "arn:aws:lambda:us-west-1:123457598159:function:python-layer-test"
fake_xray_header_value = (
"Root=1-5e272390-8c398be037738dc042009320;Parent=94ae789b969f1cc5;Sampled=1"
)
fake_xray_header_value_parent_decimal = "10713633173203262661"
fake_xray_header_value_root_decimal = "3995693151288333088"
event_samples = "tests/event_samples/"
def with_trace_propagation_style(style):
style_list = list(style.split(","))
def _wrapper(fn):
@functools.wraps(fn)
def _wrap(*args, **kwargs):
from ddtrace.propagation.http import config
orig_extract = config._propagation_style_extract
orig_inject = config._propagation_style_inject
config._propagation_style_extract = style_list
config._propagation_style_inject = style_list
try:
return fn(*args, **kwargs)
finally:
config._propagation_style_extract = orig_extract
config._propagation_style_inject = orig_inject
return _wrap
return _wrapper
_test_extract_dd_trace_context = (
("api-gateway", Context(trace_id=12345, span_id=67890, sampling_priority=2)),
(
"api-gateway-no-apiid",
Context(trace_id=12345, span_id=67890, sampling_priority=2),
),
(
"api-gateway-non-proxy",
Context(trace_id=12345, span_id=67890, sampling_priority=2),
),
(
"api-gateway-non-proxy-async",
Context(trace_id=12345, span_id=67890, sampling_priority=2),
),
(
"api-gateway-websocket-connect",
Context(trace_id=12345, span_id=67890, sampling_priority=2),
),
(
"api-gateway-websocket-default",
Context(trace_id=12345, span_id=67890, sampling_priority=2),
),
(
"api-gateway-websocket-disconnect",
Context(trace_id=12345, span_id=67890, sampling_priority=2),
),
(
"authorizer-request-api-gateway-v1",
Context(
trace_id=13478705995797221209,
span_id=8471288263384216896,
sampling_priority=1,
),
),
("authorizer-request-api-gateway-v1-cached", None),
(
"authorizer-request-api-gateway-v2",
Context(
trace_id=14356983619852933354,
span_id=12658621083505413809,
sampling_priority=1,
),
),
("authorizer-request-api-gateway-v2-cached", None),
(
"authorizer-request-api-gateway-websocket-connect",
Context(
trace_id=5351047404834723189,
span_id=18230460631156161837,
sampling_priority=1,
),
),
("authorizer-request-api-gateway-websocket-message", None),
(
"authorizer-token-api-gateway-v1",
Context(
trace_id=17874798268144902712,
span_id=16184667399315372101,
sampling_priority=1,
),
),
("authorizer-token-api-gateway-v1-cached", None),
("cloudfront", None),
("cloudwatch-events", None),
("cloudwatch-logs", None),
("custom", None),
("dynamodb", None),
("eventbridge-custom", Context(trace_id=12345, span_id=67890, sampling_priority=2)),
(
"eventbridge-sqs",
Context(
trace_id=7379586022458917877,
span_id=2644033662113726488,
sampling_priority=1,
),
),
("http-api", Context(trace_id=12345, span_id=67890, sampling_priority=2)),
(
"kinesis",
Context(
trace_id=4948377316357291421,
span_id=2876253380018681026,
sampling_priority=1,
),
),
(
"kinesis-batch",
Context(
trace_id=4948377316357291421,
span_id=2876253380018681026,
sampling_priority=1,
),
),
("lambda-url", None),
("s3", None),
(
"sns-b64-msg-attribute",
Context(
trace_id=4948377316357291421,
span_id=6746998015037429512,
sampling_priority=1,
),
),
(
"sns-batch",
Context(
trace_id=4948377316357291421,
span_id=6746998015037429512,
sampling_priority=1,
),
),
(
"sns-string-msg-attribute",
Context(
trace_id=4948377316357291421,
span_id=6746998015037429512,
sampling_priority=1,
),
),
(
"sqs-batch",
Context(
trace_id=2684756524522091840,
span_id=7431398482019833808,
sampling_priority=1,
),
),
(
"sqs-java-upstream",
Context(
trace_id=7925498337868555493,
span_id=5245570649555658903,
sampling_priority=1,
),
),
(
"sns-sqs-java-upstream",
Context(
trace_id=4781801699472307582,
span_id=7752697518321801287,
sampling_priority=1,
),
),
(
"sqs-string-msg-attribute",
Context(
trace_id=2684756524522091840,
span_id=7431398482019833808,
sampling_priority=1,
),
),
({"headers": None}, None),
)
@pytest.mark.parametrize("event,expect", _test_extract_dd_trace_context)
def test_extract_dd_trace_context(event, expect):
if isinstance(event, str):
with open(f"{event_samples}{event}.json") as f:
event = json.load(f)
ctx = get_mock_context()
actual, _, _ = extract_dd_trace_context(event, ctx)
assert (expect is None) is (actual is None)
assert (expect is None) or actual.trace_id == expect.trace_id
assert (expect is None) or actual.span_id == expect.span_id
assert (expect is None) or actual.sampling_priority == expect.sampling_priority
class TestExtractAndGetDDTraceContext(unittest.TestCase):
def setUp(self):
global dd_tracing_enabled
dd_tracing_enabled = False
os.environ["_X_AMZN_TRACE_ID"] = fake_xray_header_value
patcher = patch("datadog_lambda.tracing.send_segment")
self.mock_send_segment = patcher.start()
self.addCleanup(patcher.stop)
patcher = patch("datadog_lambda.tracing.is_lambda_context")
self.mock_is_lambda_context = patcher.start()
self.mock_is_lambda_context.return_value = True
self.addCleanup(patcher.stop)
def tearDown(self):
global dd_tracing_enabled
dd_tracing_enabled = False
del os.environ["_X_AMZN_TRACE_ID"]
@with_trace_propagation_style("datadog")
def test_without_datadog_trace_headers(self):
lambda_ctx = get_mock_context()
ctx, source, event_source = extract_dd_trace_context({}, lambda_ctx)
self.assertEqual(source, "xray")
self.assertEqual(
ctx,
Context(
trace_id=int(fake_xray_header_value_root_decimal),
span_id=int(fake_xray_header_value_parent_decimal),
sampling_priority=2,
),
)
self.assertDictEqual(
get_dd_trace_context(),
{
TraceHeader.TRACE_ID: fake_xray_header_value_root_decimal,
TraceHeader.PARENT_ID: fake_xray_header_value_parent_decimal,
TraceHeader.SAMPLING_PRIORITY: "2",
},
{},
)
@with_trace_propagation_style("datadog")
def test_with_non_object_event(self):
lambda_ctx = get_mock_context()
ctx, source, event_source = extract_dd_trace_context(b"", lambda_ctx)
self.assertEqual(source, "xray")
self.assertEqual(
ctx,
Context(
trace_id=int(fake_xray_header_value_root_decimal),
span_id=int(fake_xray_header_value_parent_decimal),
sampling_priority=2,
),
)
self.assertDictEqual(
get_dd_trace_context(),
{
TraceHeader.TRACE_ID: fake_xray_header_value_root_decimal,
TraceHeader.PARENT_ID: fake_xray_header_value_parent_decimal,
TraceHeader.SAMPLING_PRIORITY: "2",
},
{},
)
@with_trace_propagation_style("datadog")
def test_with_incomplete_datadog_trace_headers(self):
lambda_ctx = get_mock_context()
ctx, source, event_source = extract_dd_trace_context(
{"headers": {TraceHeader.TRACE_ID: "123"}},
lambda_ctx,
)
self.assertEqual(source, "xray")
self.assertEqual(
ctx,
Context(
trace_id=int(fake_xray_header_value_root_decimal),
span_id=int(fake_xray_header_value_parent_decimal),
sampling_priority=2,
),
)
self.assertDictEqual(
get_dd_trace_context(),
{
TraceHeader.TRACE_ID: fake_xray_header_value_root_decimal,
TraceHeader.PARENT_ID: fake_xray_header_value_parent_decimal,
TraceHeader.SAMPLING_PRIORITY: "2",
},
)
def common_tests_with_trace_context_extraction_injection(
self, headers, event_containing_headers, lambda_context=get_mock_context()
):
ctx, source, event_source = extract_dd_trace_context(
event_containing_headers,
lambda_context,
)
self.assertEqual(source, "event")
expected_context = propagator.extract(headers)
self.assertEqual(ctx, expected_context)
create_dd_dummy_metadata_subsegment(ctx, XraySubsegment.TRACE_KEY)
self.mock_send_segment.assert_called()
self.mock_send_segment.assert_called_with(
XraySubsegment.TRACE_KEY,
expected_context,
)
# when no active ddtrace context, xray context would be used
expected_context.span_id = int(fake_xray_header_value_parent_decimal)
expected_headers = {}
propagator.inject(expected_context, expected_headers)
dd_context_headers = get_dd_trace_context()
self.assertDictEqual(expected_headers, dd_context_headers)
@with_trace_propagation_style("datadog")
def test_with_complete_datadog_trace_headers(self):
headers = {
TraceHeader.TRACE_ID: "123",
TraceHeader.PARENT_ID: "321",
TraceHeader.SAMPLING_PRIORITY: "1",
}
self.common_tests_with_trace_context_extraction_injection(
headers, {"headers": headers}
)
@with_trace_propagation_style("tracecontext")
def test_with_w3c_trace_headers(self):
headers = {
"traceparent": "00-0000000000000000000000000000007b-0000000000000141-01",
"tracestate": "dd=s:2;t.dm:-0,rojo=00f067aa0ba902b7,congo=t61rcWkgMzE",
}
self.common_tests_with_trace_context_extraction_injection(
headers, {"headers": headers}
)
@with_trace_propagation_style("datadog")
def test_with_extractor_function(self):
def extractor_foo(event, context):
foo = event.get("foo", {})
lowercase_foo = {k.lower(): v for k, v in foo.items()}
trace_id = lowercase_foo.get(TraceHeader.TRACE_ID)
parent_id = lowercase_foo.get(TraceHeader.PARENT_ID)
sampling_priority = lowercase_foo.get(TraceHeader.SAMPLING_PRIORITY)
return trace_id, parent_id, sampling_priority
lambda_ctx = get_mock_context()
ctx, ctx_source, event_source = extract_dd_trace_context(
{
"foo": {
TraceHeader.TRACE_ID: "123",
TraceHeader.PARENT_ID: "321",
TraceHeader.SAMPLING_PRIORITY: "1",
}
},
lambda_ctx,
extractor=extractor_foo,
)
self.assertEqual(ctx_source, "event")
self.assertEqual(
ctx,
Context(
trace_id=123,
span_id=321,
sampling_priority=1,
),
)
self.assertDictEqual(
get_dd_trace_context(),
{
TraceHeader.TRACE_ID: "123",
TraceHeader.PARENT_ID: fake_xray_header_value_parent_decimal,
TraceHeader.SAMPLING_PRIORITY: "1",
},
)
@with_trace_propagation_style("datadog")
def test_graceful_fail_of_extractor_function(self):
def extractor_raiser(event, context):
raise Exception("kreator")
lambda_ctx = get_mock_context()
ctx, ctx_source, event_source = extract_dd_trace_context(
{
"foo": {
TraceHeader.TRACE_ID: "123",
TraceHeader.PARENT_ID: "321",
TraceHeader.SAMPLING_PRIORITY: "1",
}
},
lambda_ctx,
extractor=extractor_raiser,
)
self.assertEqual(ctx_source, "xray")
self.assertEqual(
ctx,
Context(
trace_id=int(fake_xray_header_value_root_decimal),
span_id=int(fake_xray_header_value_parent_decimal),
sampling_priority=2,
),
)
self.assertDictEqual(
get_dd_trace_context(),
{
TraceHeader.TRACE_ID: fake_xray_header_value_root_decimal,
TraceHeader.PARENT_ID: fake_xray_header_value_parent_decimal,
TraceHeader.SAMPLING_PRIORITY: "2",
},
)
@with_trace_propagation_style("datadog")
def test_with_sqs_distributed_datadog_trace_data(self):
headers = {
TraceHeader.TRACE_ID: "123",
TraceHeader.PARENT_ID: "321",
TraceHeader.SAMPLING_PRIORITY: "1",
}
sqs_event = {
"Records": [
{
"messageId": "059f36b4-87a3-44ab-83d2-661975830a7d",
"receiptHandle": "AQEBwJnKyrHigUMZj6rYigCgxlaS3SLy0a...",
"body": "Test message.",
"attributes": {
"ApproximateReceiveCount": "1",
"SentTimestamp": "1545082649183",
"SenderId": "AIDAIENQZJOLO23YVJ4VO",
"ApproximateFirstReceiveTimestamp": "1545082649185",
},
"messageAttributes": {
"_datadog": {
"stringValue": json.dumps(headers),
"dataType": "String",
}
},
"md5OfBody": "e4e68fb7bd0e697a0ae8f1bb342846b3",
"eventSource": "aws:sqs",
"eventSourceARN": "arn:aws:sqs:us-east-2:123456789012:my-queue",
"awsRegion": "us-east-2",
}
]
}
self.common_tests_with_trace_context_extraction_injection(headers, sqs_event)
@with_trace_propagation_style("tracecontext")
def test_with_sqs_distributed_w3c_trace_data(self):
headers = {
"traceparent": "00-0000000000000000000000000000007b-0000000000000141-01",
"tracestate": "dd=s:2;t.dm:-0,rojo=00f067aa0ba902b7,congo=t61rcWkgMzE",
}
sqs_event = {
"Records": [
{
"messageId": "059f36b4-87a3-44ab-83d2-661975830a7d",
"receiptHandle": "AQEBwJnKyrHigUMZj6rYigCgxlaS3SLy0a...",
"body": "Test message.",
"attributes": {
"ApproximateReceiveCount": "1",
"SentTimestamp": "1545082649183",
"SenderId": "AIDAIENQZJOLO23YVJ4VO",
"ApproximateFirstReceiveTimestamp": "1545082649185",
},
"messageAttributes": {
"_datadog": {
"stringValue": json.dumps(headers),
"dataType": "String",
}
},
"md5OfBody": "e4e68fb7bd0e697a0ae8f1bb342846b3",
"eventSource": "aws:sqs",
"eventSourceARN": "arn:aws:sqs:us-east-2:123456789012:my-queue",
"awsRegion": "us-east-2",
}
]
}
self.common_tests_with_trace_context_extraction_injection(headers, sqs_event)
@with_trace_propagation_style("datadog")
def test_with_legacy_client_context_datadog_trace_data(self):
headers = {
TraceHeader.TRACE_ID: "666",
TraceHeader.PARENT_ID: "777",
TraceHeader.SAMPLING_PRIORITY: "1",
}
lambda_ctx = get_mock_context(custom={"_datadog": headers})
self.common_tests_with_trace_context_extraction_injection(
headers, {}, lambda_ctx
)
@with_trace_propagation_style("tracecontext")
def test_with_legacy_client_context_w3c_trace_data(self):
headers = {
"traceparent": "00-0000000000000000000000000000029a-0000000000000309-01",
"tracestate": "dd=s:1;t.dm:-0,rojo=00f067aa0ba902b7,congo=t61rcWkgMzE",
}
lambda_ctx = get_mock_context(custom={"_datadog": headers})
self.common_tests_with_trace_context_extraction_injection(
headers, {}, lambda_ctx
)
@with_trace_propagation_style("datadog")
def test_with_new_client_context_datadog_trace_data(self):
headers = {
TraceHeader.TRACE_ID: "666",
TraceHeader.PARENT_ID: "777",
TraceHeader.SAMPLING_PRIORITY: "1",
}
lambda_ctx = get_mock_context(custom=headers)
self.common_tests_with_trace_context_extraction_injection(
headers, {}, lambda_ctx
)
@with_trace_propagation_style("tracecontext")
def test_with_new_client_context_w3c_trace_data(self):
headers = {
"traceparent": "00-0000000000000000000000000000029a-0000000000000309-01",
"tracestate": "dd=s:1;t.dm:-0,rojo=00f067aa0ba902b7,congo=t61rcWkgMzE",
}
lambda_ctx = get_mock_context(custom=headers)
self.common_tests_with_trace_context_extraction_injection(
headers, {}, lambda_ctx
)
@with_trace_propagation_style("datadog")
def test_with_complete_datadog_trace_headers_with_mixed_casing(self):
lambda_ctx = get_mock_context()
headers = {
"X-Datadog-Trace-Id": "123",
"X-Datadog-Parent-Id": "321",
"X-Datadog-Sampling-Priority": "1",
}
extract_dd_trace_context(
{"headers": headers},
lambda_ctx,
)
extract_headers = {}
context = propagator.extract(headers)
context.span_id = fake_xray_header_value_parent_decimal
propagator.inject(context, extract_headers)
self.assertDictEqual(extract_headers, get_dd_trace_context())
def test_with_complete_datadog_trace_headers_with_trigger_tags(self):
trigger_tags = {
"function_trigger.event_source": "sqs",
"function_trigger.event_source_arn": "arn:aws:sqs:us-east-1:123456789012:MyQueue",
}
create_dd_dummy_metadata_subsegment(
trigger_tags, XraySubsegment.LAMBDA_FUNCTION_TAGS_KEY
)
self.mock_send_segment.assert_called()
self.mock_send_segment.assert_has_calls(
[
call(
XraySubsegment.LAMBDA_FUNCTION_TAGS_KEY,
{
"function_trigger.event_source": "sqs",
"function_trigger.event_source_arn": "arn:aws:sqs:us-east-1:123456789012:MyQueue",
},
),
]
)
@with_trace_propagation_style("datadog")
def test_step_function_trace_data(self):
lambda_ctx = get_mock_context()
sfn_event = {
"Execution": {
"Id": "arn:aws:states:sa-east-1:425362996713:execution:abhinav-activity-state-machine:72a7ca3e-901c-41bb-b5a3-5f279b92a316",
"Name": "72a7ca3e-901c-41bb-b5a3-5f279b92a316",
"RoleArn": "arn:aws:iam::425362996713:role/service-role/StepFunctions-abhinav-activity-state-machine-role-22jpbgl6j",
"StartTime": "2024-12-04T19:38:04.069Z",
},
"State": {
"Name": "Lambda Invoke",
"EnteredTime": "2024-12-04T19:38:04.118Z",
"RetryCount": 0,
},
"StateMachine": {
"Id": "arn:aws:states:sa-east-1:425362996713:stateMachine:abhinav-activity-state-machine",
"Name": "abhinav-activity-state-machine",
},
}
ctx, source, event_source = extract_dd_trace_context(sfn_event, lambda_ctx)
self.assertEqual(source, "event")
expected_context = Context(
trace_id=435175499815315247,
span_id=3929055471293792800,
sampling_priority=1,
meta={"_dd.p.tid": "3e7a89d1b7310603"},
)
self.assertEqual(ctx, expected_context)
self.assertEqual(
get_dd_trace_context(),
{
TraceHeader.TRACE_ID: "435175499815315247",
TraceHeader.PARENT_ID: "10713633173203262661",
TraceHeader.SAMPLING_PRIORITY: "1",
TraceHeader.TAGS: "_dd.p.tid=3e7a89d1b7310603",
},
)
create_dd_dummy_metadata_subsegment(ctx, XraySubsegment.TRACE_KEY)
self.mock_send_segment.assert_called_with(
XraySubsegment.TRACE_KEY,
expected_context,
)
# https://github.com/DataDog/logs-backend/blob/c17618cb552fc369ca40282bae0a65803f82f694/domains/serverless/apps/logs-to-traces-reducer/src/test/resources/test-json-files/stepfunctions/RedriveTest/snapshots/RedriveLambdaSuccessTraceMerging.json#L46
@with_trace_propagation_style("datadog")
def test_step_function_trace_data_redrive(self):
lambda_ctx = get_mock_context()
sfn_event = {
"Execution": {
"Id": "arn:aws:states:sa-east-1:425362996713:execution:abhinav-activity-state-machine:72a7ca3e-901c-41bb-b5a3-5f279b92a316",
"Name": "72a7ca3e-901c-41bb-b5a3-5f279b92a316",
"RoleArn": "arn:aws:iam::425362996713:role/service-role/StepFunctions-abhinav-activity-state-machine-role-22jpbgl6j",
"StartTime": "2024-12-04T19:38:04.069Z",
"RedriveCount": 1,
},
"State": {
"Name": "Lambda Invoke",
"EnteredTime": "2024-12-04T19:38:04.118Z",
"RetryCount": 0,
},
"StateMachine": {
"Id": "arn:aws:states:sa-east-1:425362996713:stateMachine:abhinav-activity-state-machine",
"Name": "abhinav-activity-state-machine",
},
}
ctx, source, event_source = extract_dd_trace_context(sfn_event, lambda_ctx)
self.assertEqual(source, "event")
expected_context = Context(
trace_id=435175499815315247,
span_id=5063839446130725204,
sampling_priority=1,
meta={"_dd.p.tid": "3e7a89d1b7310603"},
)
self.assertEqual(ctx, expected_context)
self.assertEqual(
get_dd_trace_context(),
{
TraceHeader.TRACE_ID: "435175499815315247",
TraceHeader.PARENT_ID: "10713633173203262661",
TraceHeader.SAMPLING_PRIORITY: "1",
TraceHeader.TAGS: "_dd.p.tid=3e7a89d1b7310603",
},
)
create_dd_dummy_metadata_subsegment(ctx, XraySubsegment.TRACE_KEY)
self.mock_send_segment.assert_called_with(
XraySubsegment.TRACE_KEY,
expected_context,
)
@with_trace_propagation_style("datadog")
def test_step_function_trace_data_lambda_root(self):
lambda_ctx = get_mock_context()
sfn_event = {
"_datadog": {
"Execution": {
"Id": "665c417c-1237-4742-aaca-8b3becbb9e75",
"RedriveCount": 0,
},
"StateMachine": {},
"State": {
"Name": "my-awesome-state",
"EnteredTime": "Mon Nov 13 12:43:33 PST 2023",
},
"x-datadog-trace-id": "5821803790426892636",
"x-datadog-tags": "_dd.p.dm=-0,_dd.p.tid=672a7cb100000000",
"serverless-version": "v1",
}
}
ctx, source, event_source = extract_dd_trace_context(sfn_event, lambda_ctx)
self.assertEqual(source, "event")
expected_context = Context(
trace_id=5821803790426892636,
span_id=6880978411788117524,
sampling_priority=1,
meta={"_dd.p.tid": "672a7cb100000000"},
)
self.assertEqual(ctx, expected_context)
self.assertEqual(
get_dd_trace_context(),
{
TraceHeader.TRACE_ID: "5821803790426892636",
TraceHeader.PARENT_ID: "10713633173203262661",
TraceHeader.SAMPLING_PRIORITY: "1",
TraceHeader.TAGS: "_dd.p.tid=672a7cb100000000",
},
)
create_dd_dummy_metadata_subsegment(ctx, XraySubsegment.TRACE_KEY)
self.mock_send_segment.assert_called_with(
XraySubsegment.TRACE_KEY,
expected_context,
)
@with_trace_propagation_style("datadog")
def test_step_function_trace_data_sfn_root(self):
lambda_ctx = get_mock_context()
sfn_event = {
"_datadog": {
"Execution": {
"Id": "665c417c-1237-4742-aaca-8b3becbb9e75",
"RedriveCount": 0,
},
"StateMachine": {},
"State": {
"Name": "my-awesome-state",
"EnteredTime": "Mon Nov 13 12:43:33 PST 2023",
},
"RootExecutionId": "4875aba4-ae31-4a4c-bf8a-63e9eee31dad",
"serverless-version": "v1",
}
}
ctx, source, event_source = extract_dd_trace_context(sfn_event, lambda_ctx)
self.assertEqual(source, "event")
expected_context = Context(
trace_id=4521899030418994483,
span_id=6880978411788117524,
sampling_priority=1,
meta={"_dd.p.tid": "12d1270d99cc5e03"},
)
self.assertEqual(ctx, expected_context)
self.assertEqual(
get_dd_trace_context(),
{
TraceHeader.TRACE_ID: "4521899030418994483",
TraceHeader.PARENT_ID: "10713633173203262661",
TraceHeader.SAMPLING_PRIORITY: "1",
TraceHeader.TAGS: "_dd.p.tid=12d1270d99cc5e03",
},
)
create_dd_dummy_metadata_subsegment(ctx, XraySubsegment.TRACE_KEY)
self.mock_send_segment.assert_called_with(
XraySubsegment.TRACE_KEY,
expected_context,
)
class TestXRayContextConversion(unittest.TestCase):
def test_convert_xray_trace_id(self):
self.assertEqual(
_convert_xray_trace_id("00000000e1be46a994272793"), 7043144561403045779
)
self.assertEqual(
_convert_xray_trace_id("bd862e3fe1be46a994272793"), 7043144561403045779
)
self.assertEqual(
_convert_xray_trace_id("ffffffffffffffffffffffff"),
9223372036854775807, # 0x7FFFFFFFFFFFFFFF
)
def test_convert_xray_entity_id(self):
self.assertEqual(
_convert_xray_entity_id("53995c3f42cd8ad8"), 6023947403358210776
)
self.assertEqual(
_convert_xray_entity_id("1000000000000000"), 1152921504606846976
)
self.assertEqual(
_convert_xray_entity_id("ffffffffffffffff"), 18446744073709551615
)
def test_convert_xray_sampling(self):
self.assertEqual(_convert_xray_sampling(True), SamplingPriority.USER_KEEP)
self.assertEqual(_convert_xray_sampling(False), SamplingPriority.USER_REJECT)
class TestLogsInjection(unittest.TestCase):
def setUp(self):
patcher = patch("datadog_lambda.tracing.get_dd_trace_context_obj")
self.mock_get_dd_trace_context = patcher.start()
self.mock_get_dd_trace_context.return_value = Context(
trace_id=int(fake_xray_header_value_root_decimal),
span_id=int(fake_xray_header_value_parent_decimal),
sampling_priority=1,
)
self.addCleanup(patcher.stop)
patcher = patch("datadog_lambda.tracing.is_lambda_context")
self.mock_is_lambda_context = patcher.start()
self.mock_is_lambda_context.return_value = True
self.addCleanup(patcher.stop)
def test_set_correlation_ids(self):
set_correlation_ids()
span = tracer.current_span()
self.assertEqual(span.trace_id, int(fake_xray_header_value_root_decimal))
self.assertEqual(span.parent_id, int(fake_xray_header_value_parent_decimal))
span.finish()
def test_set_correlation_ids_handle_empty_trace_context(self):
# neither x-ray or ddtrace is used. no tracing context at all.
self.mock_get_dd_trace_context.return_value = Context()
# no exception thrown
set_correlation_ids()
span = tracer.current_span()
self.assertIsNone(span)
class TestFunctionSpanTags(unittest.TestCase):
def test_function(self):
ctx = get_mock_context()
span = create_function_execution_span(
context=ctx,
function_name="",
is_cold_start=False,
is_proactive_init=False,
trace_context_source={"source": ""},
merge_xray_traces=False,
trigger_tags={},
span_pointers=None,
)
self.assertEqual(span.get_tag("function_arn"), function_arn)
self.assertEqual(span.get_tag("function_version"), "$LATEST")
self.assertEqual(span.get_tag("resource_names"), "Function")
self.assertEqual(span.get_tag("functionname"), "function")
self.assertEqual(span._links, [])
def test_function_with_version(self):
function_version = "1"
ctx = get_mock_context(
invoked_function_arn=function_arn + ":" + function_version
)
span = create_function_execution_span(
context=ctx,
function_name="",
is_cold_start=False,
is_proactive_init=False,
trace_context_source={"source": ""},
merge_xray_traces=False,
trigger_tags={},
)
self.assertEqual(span.get_tag("function_arn"), function_arn)
self.assertEqual(span.get_tag("function_version"), function_version)
self.assertEqual(span.get_tag("resource_names"), "Function")
self.assertEqual(span.get_tag("functionname"), "function")
def test_function_with_alias(self):
function_alias = "alias"
ctx = get_mock_context(invoked_function_arn=function_arn + ":" + function_alias)
span = create_function_execution_span(
context=ctx,
function_name="",
is_cold_start=False,
is_proactive_init=False,
trace_context_source={"source": ""},
merge_xray_traces=False,
trigger_tags={},
)
self.assertEqual(span.get_tag("function_arn"), function_arn)
self.assertEqual(span.get_tag("function_version"), function_alias)
self.assertEqual(span.get_tag("resource_names"), "Function")
self.assertEqual(span.get_tag("functionname"), "function")
def test_function_with_trigger_tags(self):
ctx = get_mock_context()
span = create_function_execution_span(
context=ctx,
function_name="",
is_cold_start=False,
is_proactive_init=False,
trace_context_source={"source": ""},
merge_xray_traces=False,
trigger_tags={"function_trigger.event_source": "cloudwatch-logs"},
)
self.assertEqual(span.get_tag("function_arn"), function_arn)
self.assertEqual(span.get_tag("resource_names"), "Function")
self.assertEqual(span.get_tag("functionname"), "function")
self.assertEqual(
span.get_tag("function_trigger.event_source"), "cloudwatch-logs"
)
def test_function_with_span_pointers(self):
ctx = get_mock_context()
span = create_function_execution_span(
context=ctx,
function_name="",
is_cold_start=False,
is_proactive_init=False,
trace_context_source={"source": ""},
merge_xray_traces=False,
trigger_tags={},
span_pointers=[
_SpanPointerDescription(
pointer_kind="some.kind",
pointer_direction=_SpanPointerDirection.UPSTREAM,
pointer_hash="some.hash",
extra_attributes={},
),
_SpanPointerDescription(
pointer_kind="other.kind",
pointer_direction=_SpanPointerDirection.DOWNSTREAM,
pointer_hash="other.hash",
extra_attributes={"extra": "stuff"},
),
],
)
self.assertEqual(
span._links,
[
_SpanPointer(
pointer_kind="some.kind",
pointer_direction=_SpanPointerDirection.UPSTREAM,
pointer_hash="some.hash",
extra_attributes={},
),
_SpanPointer(
pointer_kind="other.kind",
pointer_direction=_SpanPointerDirection.DOWNSTREAM,
pointer_hash="other.hash",
extra_attributes={"extra": "stuff"},
),
],
)
class TestSetTraceRootSpan(unittest.TestCase):
def setUp(self):
global dd_tracing_enabled
dd_tracing_enabled = False
os.environ["_X_AMZN_TRACE_ID"] = fake_xray_header_value
patcher = patch("datadog_lambda.tracing.send_segment")
self.mock_send_segment = patcher.start()
self.addCleanup(patcher.stop)
patcher = patch("datadog_lambda.tracing.is_lambda_context")
self.mock_is_lambda_context = patcher.start()
self.mock_is_lambda_context.return_value = True
self.addCleanup(patcher.stop)
patcher = patch("datadog_lambda.tracing.tracer.context_provider.activate")
self.mock_activate = patcher.start()
self.mock_activate.return_value = True
self.addCleanup(patcher.stop)
patcher = patch("datadog_lambda.tracing.dd_trace_context", None)
self.mock_dd_trace_context = patcher.start()
self.addCleanup(patcher.stop)
def tearDown(self):
global dd_tracing_enabled
dd_tracing_enabled = False
del os.environ["_X_AMZN_TRACE_ID"]