File size: 2,913 Bytes
955a66f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | from __future__ import annotations
from typing import Any
import pandas as pd
from src.domain import MAX_BYTES, MAX_EVENTS, REQUIRED_EVENT_FIELDS
from src.parsers import parse_timestamp
from src.schemas import ValidationReport
def _as_rows(frame: pd.DataFrame | list[dict[str, Any]] | None) -> list[dict[str, Any]]:
if frame is None:
return []
if isinstance(frame, pd.DataFrame):
if frame.empty:
return []
rows: list[dict[str, Any]] = []
for raw in frame.to_dict(orient="records"):
rows.append(
{
key: value
for key, value in raw.items()
if value is not None and not (isinstance(value, float) and pd.isna(value))
}
)
return rows
return [dict(item) for item in frame if isinstance(item, dict)]
def validate_payload_size(text: str) -> ValidationReport:
report = ValidationReport(ok=True)
if len((text or "").encode("utf-8")) > MAX_BYTES:
report.add("size", f"Upload exceeds {MAX_BYTES} bytes.")
return report
def validate_events(rows: pd.DataFrame | list[dict[str, Any]] | None) -> ValidationReport:
report = ValidationReport(ok=True)
raw_rows = _as_rows(rows)
report.n_raw = len(raw_rows)
if not raw_rows:
report.add("empty", "No CloudTrail events provided.", severity="warning")
return report
if len(raw_rows) > MAX_EVENTS:
report.add("count", f"This run accepts at most {MAX_EVENTS} CloudTrail events.")
return report
seen: set[str] = set()
valid = 0
dropped = 0
for index, row in enumerate(raw_rows):
locator = f"event row {index}"
timestamp = parse_timestamp(
row.get("timestamp") or row.get("eventTime") or row.get("time") or row.get("created_at")
)
event_name = str(row.get("event_name") or row.get("eventName") or "").strip()
missing = []
if timestamp is None:
missing.append("timestamp")
if not event_name:
missing.append("event_name")
if missing:
dropped += 1
report.add(
"incomplete",
f"Dropped incomplete row ({', '.join(missing)}).",
locator=locator,
severity="warning",
)
continue
event_id = str(row.get("event_id") or row.get("eventID") or "").strip()
if event_id:
if event_id in seen:
report.add("duplicate", f"Duplicate event_id `{event_id}`.", locator=locator)
seen.add(event_id)
valid += 1
report.n_valid = valid
report.n_dropped = dropped
if valid == 0:
report.add("empty", "No valid CloudTrail events remained after schema checks.", severity="warning")
unused = REQUIRED_EVENT_FIELDS
_ = unused
return report
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