BookWorm: allow imports via BookWorm again

This commit reenables `/isbn` on both BookWorm and by extension
openlibrary.org.

Note: this changes the signature of `vendors.AmazonAPI()` to add a
`proxy_url` parameter for passing in an HTTP Proxy URL.

Author: Scott Barnes

openlibrary/core/vendors.py

@@ -44,8 +44,6 @@
 def setup(config):
     global affiliate_server_url
     affiliate_server_url = config.get('affiliate_server')
-    global http_proxy_url
-    http_proxy_url = config.get('http_proxy')
 
 
 def get_lexile(isbn):
@@ -93,12 +91,13 @@ def __init__(
         host: str = 'webservices.amazon.com',
         region: str = 'us-east-1',
         throttling: float = 0.9,
+        proxy_url: str = "",
     ) -> None:
         """
         Creates an instance containing your API credentials.
 
-        Instantiating this object in a REPL requires the `infogami._setup()`
-        magic incantation to set `http_proxy_url`.
+        Instantiating this class requires a `proxy_url` parameter as of January
+        10th, 2025 because `ol-home0` has no direct internet access.
 
         :param str key: affiliate key
         :param str secret: affiliate secret
@@ -116,10 +115,11 @@ def __init__(
         )
 
         # Replace the api object with one that supports the HTTP proxy. See #10310.
-        configuration = Configuration()
-        configuration.proxy = http_proxy_url
-        rest_client = RESTClientObject(configuration=configuration)
-        self.api.api_client.rest_client = rest_client
+        if proxy_url:
+            configuration = Configuration()
+            configuration.proxy = http_proxy_url
+            rest_client = RESTClientObject(configuration=configuration)
+            self.api.api_client.rest_client = rest_client
 
     def search(self, keywords):
         """Adding method to test amz searches from the CLI, unused otherwise"""

scripts/affiliate_server.py

@@ -689,6 +689,7 @@ def GET(self, identifier: str) -> str:
 def load_config(configfile):
     # This loads openlibrary.yml + infobase.yml
     openlibrary_load_config(configfile)
+    http_proxy_url = config.get('http_proxy')
 
     stats.client = stats.create_stats_client(cfg=config)
 
@@ -699,7 +700,7 @@ def load_config(configfile):
         config.amazon_api.get('id'),
     ]
     if all(args):
-        web.amazon_api = AmazonAPI(*args, throttling=0.9)
+        web.amazon_api = AmazonAPI(*args, throttling=0.9, proxy_url=http_proxy_url)
         logger.info("AmazonAPI Initialized")
     else:
         raise RuntimeError(f"{configfile} is missing required keys.")