3 files changed, 114 insertions, 0 deletions
diff --git a/testing/web-platform/tests/attribution-reporting/__init__.py b/testing/web-platform/tests/attribution-reporting/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/testing/web-platform/tests/attribution-reporting/__init__.py
diff --git a/testing/web-platform/tests/attribution-reporting/resources/__init__.py b/testing/web-platform/tests/attribution-reporting/resources/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/testing/web-platform/tests/attribution-reporting/resources/__init__.py
diff --git a/testing/web-platform/tests/attribution-reporting/resources/reports.py b/testing/web-platform/tests/attribution-reporting/resources/reports.py
new file mode 100644
index 0000000000..9682a6dd24
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+++ b/testing/web-platform/tests/attribution-reporting/resources/reports.py
@@ -0,0 +1,114 @@
+"""Methods for the report-event-attribution and report-aggregate-attribution endpoints"""
+import json
+from typing import List, Optional, Tuple, TypedDict
+
+from wptserve.request import Request
+from wptserve.stash import Stash
+from wptserve.utils import isomorphic_decode, isomorphic_encode
+
+# Key used to access the reports in the stash.
+REPORTS = "4691a2d7fca5430fb0f33b1bd8a9d388"
+
+CLEAR_STASH = isomorphic_encode("clear_stash")
+
+Header = Tuple[str, str]
+Status = Tuple[int, str]
+Response = Tuple[Status, List[Header], str]
+
+
+def decode_headers(headers: dict) -> dict:
+  """Decodes the headers from wptserve.
+
+  wptserve headers are encoded like
+  {
+    encoded(key): [encoded(value1), encoded(value2),...]
+  }
+  This method decodes the above using the wptserve.utils.isomorphic_decode
+  method
+  """
+  return {
+      isomorphic_decode(key): [isomorphic_decode(el) for el in value
+                              ] for key, value in headers.items()
+  }
+
+def get_request_origin(request: Request) -> str:
+  return "%s://%s" % (request.url_parts.scheme,
+                      request.url_parts.netloc)
+
+
+def handle_post_report(request: Request, headers: List[Header]) -> Response:
+  """Handles POST request for reports.
+
+  Retrieves the report from the request body and stores the report in the
+  stash. If clear_stash is specified in the query params, clears the stash.
+  """
+  if request.GET.get(CLEAR_STASH):
+    clear_stash(request.server.stash)
+    return (200, "OK"), headers, json.dumps({
+        "code": 200,
+        "message": "Stash successfully cleared.",
+    })
+  store_report(
+      request.server.stash, get_request_origin(request), {
+          "body": request.body.decode("utf-8"),
+          "headers": decode_headers(request.headers)
+      })
+  return (201, "OK"), headers, json.dumps({
+      "code": 201,
+      "message": "Report successfully stored."
+  })
+
+
+def handle_get_reports(request: Request, headers: List[Header]) -> Response:
+  """Handles GET request for reports.
+
+  Retrieves and returns all reports from the stash.
+  """
+  reports = take_reports(request.server.stash, get_request_origin(request))
+  headers.append(("Access-Control-Allow-Origin", "*"))
+  return (200, "OK"), headers, json.dumps({
+      "code": 200,
+      "reports": reports,
+  })
+
+
+def store_report(stash: Stash, origin: str, report: str) -> None:
+  """Stores the report in the stash. Report here is a JSON."""
+  with stash.lock:
+    reports_dict = stash.take(REPORTS)
+    if not reports_dict:
+      reports_dict = {}
+    reports = reports_dict.get(origin, [])
+    reports.append(report)
+    reports_dict[origin] = reports
+    stash.put(REPORTS, reports_dict)
+  return None
+
+def clear_stash(stash: Stash) -> None:
+  "Clears the stash."
+  stash.take(REPORTS)
+  return None
+
+def take_reports(stash: Stash, origin: str) -> List[str]:
+  """Takes all the reports from the stash and returns them."""
+  with stash.lock:
+    reports_dict = stash.take(REPORTS)
+    if not reports_dict:
+      reports_dict = {}
+
+    reports = reports_dict.pop(origin, [])
+    stash.put(REPORTS, reports_dict)
+  return reports
+
+
+def handle_reports(request: Request) -> Response:
+  """Handles request to get or store reports."""
+  headers = [("Content-Type", "application/json")]
+  if request.method == "POST":
+    return handle_post_report(request, headers)
+  if request.method == "GET":
+    return handle_get_reports(request, headers)
+  return (405, "Method Not Allowed"), headers, json.dumps({
+      "code": 405,
+      "message": "Only GET or POST methods are supported."
+  })