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Tilføj retries til URL-refresh ved manglende @microsoft.graph.downloadUrl i API svar

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Martin Tranberg
2026-03-27 14:11:28 +01:00
parent 1c3180e037
commit 59eb9a4ab0
1 changed files with 28 additions and 13 deletions
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41
download_sharepoint.py
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@@ -112,22 +112,37 @@ def get_drive_id(app, site_id, drive_name):
# --- Punkt 2: Resume / Chunked Download logic ---
def get_fresh_download_url(app, drive_id, item_id):
"""Fetches a fresh download URL for a specific item ID with token refresh support."""
url = f"https://graph.microsoft.com/v1.0/drives/{drive_id}/items/{item_id}?$select=id,@microsoft.graph.downloadUrl"
"""Fetches a fresh download URL for a specific item ID with retries and robust error handling."""
url = f"https://graph.microsoft.com/v1.0/drives/{drive_id}/items/{item_id}"
try:
headers = get_headers(app)
response = requests.get(url, headers=headers, timeout=60)
if response.status_code == 401:
logger.info("Access Token expired. Forcing refresh...")
headers = get_headers(app, force_refresh=True)
for attempt in range(3):
try:
headers = get_headers(app)
response = requests.get(url, headers=headers, timeout=60)
response.raise_for_status()
return response.json().get('@microsoft.graph.downloadUrl'), None
except Exception as e:
return None, str(e)
if response.status_code == 401:
logger.info(f"Access Token expired during refresh (Attempt {attempt+1}). Forcing refresh...")
headers = get_headers(app, force_refresh=True)
response = requests.get(url, headers=headers, timeout=60)
response.raise_for_status()
data = response.json()
download_url = data.get('@microsoft.graph.downloadUrl')
if download_url:
return download_url, None
# If item exists but URL is missing, it might be a transient SharePoint issue
logger.warning(f"Attempt {attempt+1}: '@microsoft.graph.downloadUrl' missing for {item_id}. Retrying in 1s...")
time.sleep(1)
except Exception as e:
if attempt == 2:
return None, str(e)
logger.warning(f"Attempt {attempt+1} failed: {e}. Retrying...")
time.sleep(1)
return None, "Item returned but '@microsoft.graph.downloadUrl' was missing after 3 attempts."
def download_single_file(app, drive_id, item_id, local_path, expected_size, display_name, remote_hash=None, initial_url=None):
try: