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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 Context, tracer
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"]
def test_mixed_parent_context_when_merging(self):