Add HEAD requests support to DelayedRequester

openverse_catalog/dags/common/requester.py

@@ -30,12 +30,11 @@ class RetriesExceeded(Exception):
 
 class DelayedRequester:
     """
-    Provides a method `get` that is a wrapper around `get` from the
-    `requests` module (i.e., it simply passes along whatever arguments it
-    receives).  The difference is that when this class is initialized
-    with a non-zero `delay` parameter, it waits for at least that number
-    of seconds between consecutive requests. This is to avoid hitting
-    rate limits of APIs.
+    Provides methods `get` and `head` that are wrappers around the `requests`
+    module methods with the same name (i.e., it simply passes along whatever
+    arguments it receives).  The difference is that when this class is initialized
+    with a non-zero `delay` parameter, it waits for at least that number of seconds
+    between consecutive requests. This is to avoid hitting rate limits of APIs.
 
     Optional Arguments:
     delay:   an integer giving the minimum number of seconds to wait
@@ -50,23 +49,24 @@ def __init__(self, delay=0, headers=None):
         self._last_request = 0
         self.session = requests.Session()
 
-    def get(self, url, params=None, **kwargs):
+    def _make_request(self, method, url, **kwargs):
         """
-        Make a get request, and return the response object if it exists.
+        Make a request, and return the response object if it exists.
 
         Required Arguments:
 
         url:      URL to make the request as a string.
         params:   Dictionary of query string params
-        **kwargs: Optional arguments that will be passed to `requests.get`
+        **kwargs: Optional arguments that will be passed to the `requests`
+                  module request
         """
         self._delay_processing()
         self._last_request = time.time()
         request_kwargs = kwargs or {}
         if "headers" not in kwargs:
             request_kwargs["headers"] = self.headers
         try:
-            response = self.session.get(url, params=params, **request_kwargs)
+            response = method(url, **request_kwargs)
             if response.status_code == requests.codes.ok:
                 logger.debug(f"Received response from url {response.url}")
             elif response.status_code == requests.codes.unauthorized:
@@ -90,10 +90,17 @@ def get(self, url, params=None, **kwargs):
         except Exception as e:
             logger.error(f"Error with the request for URL: {url}")
             logger.info(f"{type(e).__name__}: {e}")
-            logger.info(f"Using query parameters {params}")
+            if params := request_kwargs.get("params"):
+                logger.info(f"Using query parameters {params}")
             logger.info(f'Using headers {request_kwargs.get("headers")}')
             return None
 
+    def get(self, url, params=None, **kwargs):
+        self._make_request(self.session.get, url, params=params, **kwargs)
+
+    def head(self, url, **kwargs):
+        self._make_request(self.session.head, url, **kwargs)
+
     def _delay_processing(self):
         wait = self._DELAY - (time.time() - self._last_request)
         if wait >= 0:

openverse_catalog/dags/providers/provider_api_scripts/stocksnap.py

@@ -151,7 +151,7 @@ def _get_filesize(self, image_url):
         """
         Get the size of the image in bytes.
         """
-        resp = self.delayed_requester.get(image_url)
+        resp = self.delayed_requester.head(image_url)
         if resp:
             filesize = int(resp.headers.get("Content-Length", 0))
             return filesize if filesize != 0 else None

openverse_catalog/dags/providers/provider_api_scripts/wordpress.py

@@ -129,7 +129,7 @@ def _get_file_info(self, media_details):
         return None, None, None, None
 
     def _get_filesize(self, image_url):
-        resp = self.get_response_json(query_params={}, endpoint=image_url)
+        resp = self.delayed_requester.head(image_url)
         if resp:
             filesize = int(resp.headers.get("Content-Length", 0))
             return filesize if filesize != 0 else None