1 files changed, 95 insertions, 0 deletions
diff --git a/tools/lint/perfdocs/logger.py b/tools/lint/perfdocs/logger.py
new file mode 100644
index 0000000000..ba02532c32
--- /dev/null
+++ b/tools/lint/perfdocs/logger.py
@@ -0,0 +1,95 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+import pathlib
+
+
+class PerfDocLogger(object):
+    """
+    Logger for the PerfDoc tooling. Handles the warnings by outputting
+    them into through the StructuredLogger provided by lint.
+    """
+
+    TOP_DIR = ""
+    PATHS = []
+    LOGGER = None
+    FAILED = False
+
+    def __init__(self):
+        """Initializes the PerfDocLogger."""
+
+        # Set up class attributes for all logger instances
+        if not PerfDocLogger.LOGGER:
+            raise Exception(
+                "Missing linting LOGGER instance for PerfDocLogger initialization"
+            )
+        if not PerfDocLogger.PATHS:
+            raise Exception("Missing PATHS for PerfDocLogger initialization")
+        self.logger = PerfDocLogger.LOGGER
+
+    def log(self, msg):
+        """
+        Log an info message.
+
+        :param str msg: Message to log.
+        """
+        self.logger.info(msg)
+
+    def warning(self, msg, files, restricted=True):
+        """
+        Logs a validation warning message. The warning message is
+        used as the error message that is output in the reviewbot.
+
+        :param str msg: Message to log, it's also used as the error message
+            for the issue that is output by the reviewbot.
+        :param list/str files: The file(s) that this warning is about.
+        :param boolean restricted: If the param is False, the lint error can be used anywhere.
+        """
+        if type(files) != list:
+            files = [files]
+
+        if len(files) == 0:
+            self.logger.info("No file was provided for the warning")
+            self.logger.lint_error(
+                message=msg,
+                lineno=0,
+                column=None,
+                path=None,
+                linter="perfdocs",
+                rule="Flawless performance docs (unknown file)",
+            )
+
+            PerfDocLogger.FAILED = True
+            return
+
+        # Add a reviewbot error for each file that is given
+        for file in files:
+            # Get a relative path (reviewbot can't handle absolute paths)
+            fpath = str(file).replace(str(PerfDocLogger.TOP_DIR), "")
+
+            # Filter out any issues that do not relate to the paths
+            # that are being linted
+            for path in PerfDocLogger.PATHS:
+                if restricted and str(path) not in str(file):
+                    continue
+
+                # Output error entry
+                self.logger.lint_error(
+                    message=msg,
+                    lineno=0,
+                    column=None,
+                    path=str(pathlib.PurePosixPath(fpath)),
+                    linter="perfdocs",
+                    rule="Flawless performance docs.",
+                )
+
+                PerfDocLogger.FAILED = True
+                break
+
+    def critical(self, msg):
+        """
+        Log a critical message.
+
+        :param str msg: Message to log.
+        """
+        self.logger.critical(msg)