Anon metrics (#113)

README.md

@@ -219,6 +219,12 @@ repos:
 
 See https://pre-commit.com/ for more...
 
+## Disable anonymous metrics
+
+We collect anonymous usage metrics to improve nbmake.
+
+You can disable them by setting the environment variable NBMAKE_METRICS=0
+
 ## Disable Nbmake
 
 Implicitly:

src/nbmake/metrics.py

@@ -0,0 +1,39 @@
+import json
+import os
+import platform
+import sys
+import time
+import urllib.request
+
+
+def submit_event():
+    """We collect anonymous usage metrics to improve nbmake.
+
+    You can disable them by setting the environment variable NBMAKE_METRICS=0.
+    """
+    mixpanel_token = "8440a5d8fa0ec1d43b6bcaf76037fae7"
+    url = "https://api-eu.mixpanel.com/track"
+
+    payload = [
+        {
+            "event": "Invocation",
+            "properties": {
+                "token": mixpanel_token,
+                "$os": platform.system(),
+                "time": int(time.time()),
+                "platform": platform.platform(),
+                "python": sys.version,
+                "ci": os.getenv("CI", False) and True,
+            },
+        }
+    ]
+    headers = {
+        "accept": "text/plain",
+        "content-type": "application/json",
+    }
+    req = urllib.request.Request(
+        url, data=json.dumps(payload).encode("utf8"), headers=headers
+    )
+    response = urllib.request.urlopen(req, timeout=1.0)
+
+    return response.read().decode("utf8")

src/nbmake/pytest_plugin.py

@@ -1,12 +1,15 @@
 import asyncio
+import os
 import sys
 from pathlib import Path
 from typing import Any, Optional
 
+import nbmake.metrics
+
 try:
     from importlib.metadata import version
 except ImportError:
-    from importlib_metadata import version
+    from importlib_metadata import version  # type: ignore
 
 from .pytest_items import NotebookFile
 
@@ -65,3 +68,16 @@ def pytest_collect_file(path: str, parent: Any) -> Optional[Any]:
         return NotebookFile.from_parent(parent, path=p)
 
     return None
+
+
+def pytest_terminal_summary(terminalreporter: Any, exitstatus: int, config: Any):
+    if not config.option.nbmake:
+        return
+
+    if os.getenv("NBMAKE_METRICS", "1") != "1":
+        return
+
+    try:
+        nbmake.metrics.submit_event()
+    except:
+        pass

tests/test_pytest_plugin.py

@@ -1,8 +1,9 @@
 from __future__ import print_function
 
 import os
-from importlib import import_module, reload
+from importlib import import_module, invalidate_caches, reload
 from pathlib import Path
+from unittest.mock import patch
 
 from nbformat import read
 from pytest import ExitCode, Pytester
@@ -207,3 +208,47 @@ def test_when_not_json_then_correct_err_msg(pytester: Pytester, testdir2: Never)
     assert longrepr is not None
     assert "NBMAKE INTERNAL ERROR" not in longrepr.term
     assert "json" in longrepr.term
+
+
+def test_when_testing_nbs_then_submit_metrics(pytester: Pytester):
+    write_nb(failing_nb, Path(pytester.path) / "a.ipynb")
+
+    with patch("nbmake.metrics.submit_event", return_value="1") as mock_method:
+        hook_recorder = pytester.inline_run("--nbmake", "-v")
+        assert hook_recorder.ret == ExitCode.TESTS_FAILED
+        mock_method.assert_called_once()
+
+
+def test_when_metrics_fail_then_ignore(pytester: Pytester):
+    write_nb(failing_nb, Path(pytester.path) / "a.ipynb")
+
+    with patch("nbmake.metrics.submit_event", return_value="1") as mock_method:
+        mock_method.side_effect = Exception("test")
+        write_nb(passing_nb, Path(pytester.path) / "a.ipynb")
+
+        items, hook_recorder = pytester.inline_genitems("--nbmake")
+
+        assert hook_recorder.ret == ExitCode.OK
+        assert len(items) == 1
+        mock_method.assert_called_once()
+
+
+def test_when_metrics_disabled_dont_log_metrics(pytester: Pytester):
+    write_nb(failing_nb, Path(pytester.path) / "a.ipynb")
+    # not thread-safe
+    os.environ["NBMAKE_METRICS"] = "0"
+
+    with patch("nbmake.metrics.submit_event", return_value="1") as mock_method:
+        hook_recorder = pytester.inline_run("--nbmake", "-v")
+        assert hook_recorder.ret == ExitCode.TESTS_FAILED
+        mock_method.assert_not_called()
+
+    del os.environ["NBMAKE_METRICS"]
+
+
+def test_when_no_nbmake_flag_then_no_metrics(pytester: Pytester):
+    write_nb(failing_nb, Path(pytester.path) / "a.ipynb")
+    with patch("nbmake.metrics.submit_event", return_value="1") as mock_method:
+        hook_recorder = pytester.inline_run("-v")
+        assert hook_recorder.ret == ExitCode.NO_TESTS_COLLECTED
+        mock_method.assert_not_called()