Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/build/docs/telemetry.rst b/build/docs/telemetry.rst
new file mode 100644
index 0000000000..7dd24d7df2
--- /dev/null
+++ b/build/docs/telemetry.rst
@@ -0,0 +1,49 @@
+.. _buildtelemetry:
+
+===============
+Build Telemetry
+===============
+
+The build system (specifically, all the build tooling hooked
+up to ``./mach``) has been configured to collect metrics data
+points and errors for various build system actions. This data
+helps drive team planning for the build team and ensure that
+resources are applied to build processes that need them most.
+You can adjust your telemetry settings by editing your
+``~/.mozbuild/machrc`` file.
+
+Glean Telemetry
+===============
+
+Mozbuild reports data using `Glean <https://mozilla.github.io/glean/>`_ via
+:ref:`mach_telemetry`.  The metrics collected are documented :ref:`here<metrics>`.
+
+Error Reporting
+===============
+
+``./mach`` uses `Sentry <https://sentry.io/welcome/>`_
+to automatically report errors to `our issue-tracking dashboard
+<https://sentry.prod.mozaws.net/operations/mach/>`_.
+
+Information captured
+++++++++++++++++++++
+
+Sentry automatically collects useful information surrounding
+the error to help the build team discover what caused the
+issue and how to reproduce it. This information includes:
+
+* Environmental information, such as the computer name, timestamp, Python runtime and Python module versions
+* Process arguments
+* The stack trace of the error, including contextual information:
+
+    * The data contained in the exception
+    * Functions and their respective source file names, line numbers
+    * Variables in each frame
+* `Sentry "Breadcrumbs" <https://docs.sentry.io/platforms/python/default-integrations/>`_,
+  which are important events that have happened which help contextualize the error, such as:
+
+    * An HTTP request has occurred
+    * A subprocess has been spawned
+    * Logging has occurred
+
+Note that file paths may be captured, which include absolute paths (potentially including usernames).