import concurrent.futures as cf

import sys

import copy

import threading

import pytest

import sentry_sdk

from sentry_sdk.feature_flags import add_feature_flag, FlagBuffer

from sentry_sdk import start_span, start_transaction

from tests.conftest import ApproxDict

def test_featureflags_integration(sentry_init, capture_events, uninstall_integration):

sentry_init()

add_feature_flag("hello", False)

add_feature_flag("world", True)

add_feature_flag("other", False)

events = capture_events()

sentry_sdk.capture_exception(Exception("something wrong!"))

assert len(events) == 1

assert events[0]["contexts"]["flags"] == {

"values": [

{"flag": "hello", "result": False},

{"flag": "world", "result": True},

{"flag": "other", "result": False},

]

}

@pytest.mark.asyncio

async def test_featureflags_integration_spans_async(sentry_init, capture_events):

sentry_init(

traces_sample_rate=1.0,

)

events = capture_events()

add_feature_flag("hello", False)

try:

with sentry_sdk.start_span(name="test-span"):

with sentry_sdk.start_span(name="test-span-2"):

raise ValueError("something wrong!")

except ValueError as e:

sentry_sdk.capture_exception(e)

found = False

for event in events:

if "exception" in event.keys():

assert event["contexts"]["flags"] == {

"values": [

{"flag": "hello", "result": False},

]

}

found = True

assert found, "No event with exception found"

def test_featureflags_integration_spans_sync(sentry_init, capture_events):

sentry_init(

traces_sample_rate=1.0,

)

events = capture_events()

add_feature_flag("hello", False)

try:

with sentry_sdk.start_span(name="test-span"):

with sentry_sdk.start_span(name="test-span-2"):

raise ValueError("something wrong!")

except ValueError as e:

sentry_sdk.capture_exception(e)

found = False

for event in events:

if "exception" in event.keys():

assert event["contexts"]["flags"] == {

"values": [

{"flag": "hello", "result": False},

]

}

found = True

assert found, "No event with exception found"

def test_featureflags_integration_threaded(

sentry_init, capture_events, uninstall_integration

):

sentry_init()

events = capture_events()

# Capture an eval before we split isolation scopes.

add_feature_flag("hello", False)

def task(flag_key):

# Creates a new isolation scope for the thread.

# This means the evaluations in each task are captured separately.

with sentry_sdk.isolation_scope():

add_feature_flag(flag_key, False)

# use a tag to identify to identify events later on

sentry_sdk.set_tag("task_id", flag_key)

sentry_sdk.capture_exception(Exception("something wrong!"))

# Run tasks in separate threads

with cf.ThreadPoolExecutor(max_workers=2) as pool:

pool.map(task, ["world", "other"])

# Capture error in original scope

sentry_sdk.set_tag("task_id", "0")

sentry_sdk.capture_exception(Exception("something wrong!"))

assert len(events) == 3

events.sort(key=lambda e: e["tags"]["task_id"])

assert events[0]["contexts"]["flags"] == {

"values": [

{"flag": "hello", "result": False},

]

}

assert events[1]["contexts"]["flags"] == {

"values": [

{"flag": "hello", "result": False},

{"flag": "other", "result": False},

]

}

assert events[2]["contexts"]["flags"] == {

"values": [

{"flag": "hello", "result": False},

{"flag": "world", "result": False},

]

}

@pytest.mark.skipif(sys.version_info < (3, 7), reason="requires python3.7 or higher")

def test_featureflags_integration_asyncio(

sentry_init, capture_events, uninstall_integration

):

asyncio = pytest.importorskip("asyncio")

sentry_init()

events = capture_events()

# Capture an eval before we split isolation scopes.

add_feature_flag("hello", False)

async def task(flag_key):

# Creates a new isolation scope for the thread.

# This means the evaluations in each task are captured separately.

with sentry_sdk.isolation_scope():

add_feature_flag(flag_key, False)

# use a tag to identify to identify events later on

sentry_sdk.set_tag("task_id", flag_key)

sentry_sdk.capture_exception(Exception("something wrong!"))

async def runner():

return asyncio.gather(task("world"), task("other"))

asyncio.run(runner())

# Capture error in original scope

sentry_sdk.set_tag("task_id", "0")

sentry_sdk.capture_exception(Exception("something wrong!"))

assert len(events) == 3

events.sort(key=lambda e: e["tags"]["task_id"])

assert events[0]["contexts"]["flags"] == {

"values": [

{"flag": "hello", "result": False},

]

}

assert events[1]["contexts"]["flags"] == {

"values": [

{"flag": "hello", "result": False},

{"flag": "other", "result": False},

]

}

assert events[2]["contexts"]["flags"] == {

"values": [

{"flag": "hello", "result": False},

{"flag": "world", "result": False},

]

}

def test_flag_tracking():

"""Assert the ring buffer works."""

buffer = FlagBuffer(capacity=3)

buffer.set("a", True)

flags = buffer.get()

assert len(flags) == 1

assert flags == [{"flag": "a", "result": True}]

buffer.set("b", True)

flags = buffer.get()

assert len(flags) == 2

assert flags == [{"flag": "a", "result": True}, {"flag": "b", "result": True}]

buffer.set("c", True)

flags = buffer.get()

assert len(flags) == 3

assert flags == [

{"flag": "a", "result": True},

{"flag": "b", "result": True},

{"flag": "c", "result": True},

]

buffer.set("d", False)

flags = buffer.get()

assert len(flags) == 3

assert flags == [

{"flag": "b", "result": True},

{"flag": "c", "result": True},

{"flag": "d", "result": False},

]

buffer.set("e", False)

buffer.set("f", False)

flags = buffer.get()

assert len(flags) == 3

assert flags == [

{"flag": "d", "result": False},

{"flag": "e", "result": False},

{"flag": "f", "result": False},

]

# Test updates

buffer.set("e", True)

buffer.set("e", False)

buffer.set("e", True)

flags = buffer.get()

assert flags == [

{"flag": "d", "result": False},

{"flag": "f", "result": False},

{"flag": "e", "result": True},

]

buffer.set("d", True)

flags = buffer.get()

assert flags == [

{"flag": "f", "result": False},

{"flag": "e", "result": True},

{"flag": "d", "result": True},

]

def test_flag_buffer_concurrent_access():

buffer = FlagBuffer(capacity=100)

error_occurred = False

def writer():

for i in range(1_000_000):

buffer.set(f"key_{i}", True)

def reader():

nonlocal error_occurred

try:

for _ in range(1000):

copy.deepcopy(buffer)

except RuntimeError:

error_occurred = True

writer_thread = threading.Thread(target=writer)

reader_thread = threading.Thread(target=reader)

writer_thread.start()

reader_thread.start()

writer_thread.join(timeout=5)

reader_thread.join(timeout=5)

# This should always be false. If this ever fails we know we have concurrent access to a

# shared resource. When deepcopying we should have exclusive access to the underlying

# memory.

assert error_occurred is False

def test_flag_limit(sentry_init, capture_events):

sentry_init(traces_sample_rate=1.0)

events = capture_events()

with start_transaction(name="hi"):

with start_span(op="foo", name="bar"):

add_feature_flag("0", True)

add_feature_flag("1", True)

add_feature_flag("2", True)

add_feature_flag("3", True)

add_feature_flag("4", True)

add_feature_flag("5", True)

add_feature_flag("6", True)

add_feature_flag("7", True)

add_feature_flag("8", True)

add_feature_flag("9", True)

add_feature_flag("10", True)

(event,) = events

assert event["spans"][0]["data"] == ApproxDict(

{

"flag.evaluation.0": True,

"flag.evaluation.1": True,

"flag.evaluation.2": True,

"flag.evaluation.3": True,

"flag.evaluation.4": True,

"flag.evaluation.5": True,

"flag.evaluation.6": True,

"flag.evaluation.7": True,

"flag.evaluation.8": True,

"flag.evaluation.9": True,

}

)

assert "flag.evaluation.10" not in event["spans"][0]["data"]