Merge branch 'master' into gmiller/2950-skip-ytdlp

brozzler/__init__.py

@@ -47,6 +47,10 @@ class ProxyError(Exception):
     pass
 
 
+class PageConnectionError(Exception):
+    pass
+
+
 class ReachedTimeLimit(Exception):
     pass
 

brozzler/browser.py

@@ -483,6 +483,7 @@ class Browser:
         skip_extract_outlinks=False,
         skip_visit_hashtags=False,
         skip_youtube_dl=False,
+        ytdlp_tmpdir="/tmp",
         simpler404=False,
         page_timeout=300,
         behavior_timeout=900,
@@ -658,11 +659,9 @@ class Browser:
     ):
         headers = extra_headers or {}
         headers["Accept-Encoding"] = "gzip"  # avoid encodings br, sdch
-        self.websock_thread.expect_result(self._command_id.peek())
         msg_id = self.send_to_chrome(
             method="Network.setExtraHTTPHeaders", params={"headers": headers}
         )
-        self._wait_for(lambda: self.websock_thread.received_result(msg_id), timeout=10)
         if user_agent:
             msg_id = self.send_to_chrome(
                 method="Network.setUserAgentOverride", params={"userAgent": user_agent}

brozzler/cli.py

@@ -265,6 +265,12 @@ def brozzle_page(argv=None):
     arg_parser.add_argument(
         "--skip-youtube-dl", dest="skip_youtube_dl", action="store_true"
     )
+    arg_parser.add_argument(
+        "--ytdlp_tmpdir",
+        dest="ytdlp_tmpdir",
+        default="/tmp",
+        help="specify a temp dir for ytdlp; defaults to /tmp",
+    )
     arg_parser.add_argument("--simpler404", dest="simpler404", action="store_true")
     add_common_options(arg_parser, argv)
 
@@ -292,6 +298,7 @@ def brozzle_page(argv=None):
         skip_extract_outlinks=args.skip_extract_outlinks,
         skip_visit_hashtags=args.skip_visit_hashtags,
         skip_youtube_dl=args.skip_youtube_dl,
+        ytdlp_tmpdir=args.ytdlp_tmpdir,
         simpler404=args.simpler404,
         screenshot_full_page=args.screenshot_full_page,
         download_throughput=args.download_throughput,
@@ -533,6 +540,12 @@ def brozzler_worker(argv=None):
         action="store_true",
         help=argparse.SUPPRESS,
     )
+    arg_parser.add_argument(
+        "--ytdlp_tmpdir",
+        dest="ytdlp_tmpdir",
+        default="/tmp",
+        help="argparse.SUPPRESS",
+    )
     arg_parser.add_argument(
         "--stealth",
         dest="stealth",
@@ -598,6 +611,7 @@ def brozzler_worker(argv=None):
         skip_extract_outlinks=args.skip_extract_outlinks,
         skip_visit_hashtags=args.skip_visit_hashtags,
         skip_youtube_dl=args.skip_youtube_dl,
+        ytdlp_tmpdir=args.ytdlp_tmpdir,
         stealth=args.stealth,
         metrics_port=args.metrics_port,
         registry_url=args.registry_url,

brozzler/frontier.py

@@ -138,7 +138,14 @@ class RethinkDbFrontier:
                         emit=lambda acc, site, new_acc: r.branch(
                             r.and_(
                                 r.or_(
+                                    # Avoid tight loop when unclaimed site was recently disclaimed
+                                    r.and_(
                                         site["claimed"].not_(),
+                                        r.or_(
+                                            site.has_fields("last_disclaimed").not_(),
+                                            site["last_disclaimed"].lt(r.now().sub(20)),
+                                        ),
+                                    ),
                                     site["last_claimed"].lt(r.now().sub(60 * 60)),
                                 ),
                                 r.or_(
@@ -218,6 +225,11 @@ class RethinkDbFrontier:
                 index="priority_by_site",
             )
             .order_by(index=r.desc("priority_by_site"))
+            .filter(
+                lambda page: r.or_(
+                    page.has_fields("retry_after").not_(), r.now() > page["retry_after"]
+                )
+            )
             .limit(1)
             .update(
                 {"claimed": True, "last_claimed_by": worker_id}, return_changes="always"

brozzler/model.py

@@ -411,6 +411,10 @@ class Page(doublethink.Document):
         return hashlib.sha1(digest_this.encode("utf-8")).hexdigest()
 
     def populate_defaults(self):
+        if not "retry_after" in self:
+            self.retry_after = None
+        if not "failed_attempts" in self:
+            self.failed_attempts = 0
         if not "hops_from_seed" in self:
             self.hops_from_seed = 0
         if not "hop_path" in self:

brozzler/worker.py

@@ -22,6 +22,7 @@ import logging
 import brozzler
 import brozzler.browser
 from brozzler.model import VideoCaptureOptions
+import datetime
 import threading
 import time
 import urllib.request
@@ -63,6 +64,7 @@ class BrozzlerWorker:
         skip_extract_outlinks=False,
         skip_visit_hashtags=False,
         skip_youtube_dl=False,
+        ytdlp_tmpdir="/tmp",
         simpler404=False,
         screenshot_full_page=False,
         page_timeout=300,
@@ -87,6 +89,7 @@ class BrozzlerWorker:
         self._skip_extract_outlinks = skip_extract_outlinks
         self._skip_visit_hashtags = skip_visit_hashtags
         self._skip_youtube_dl = skip_youtube_dl
+        self._ytdlp_tmpdir = ytdlp_tmpdir
         self._simpler404 = simpler404
         self._screenshot_full_page = screenshot_full_page
         self._page_timeout = page_timeout
@@ -286,12 +289,13 @@ class BrozzlerWorker:
                     browser, site, page, on_screenshot, on_request
                 )
                 outlinks.update(browser_outlinks)
+                status_code = browser.websock_thread.page_status
+                if status_code in [502, 504]:
+                    raise brozzler.PageConnectionError()
             except brozzler.PageInterstitialShown:
                 self.logger.info("page interstitial shown (http auth): %s", page)
 
-            if enable_youtube_dl and ydl.should_ytdlp(
+            if enable_youtube_dl and ydl.should_ytdlp(site, page, status_code):
-                site, page, browser.websock_thread.page_status
-            ):
                 try:
                     ydl_outlinks = ydl.do_youtube_dl(self, site, page)
                     metrics.brozzler_ydl_urls_checked.inc(1)
@@ -439,7 +443,7 @@ class BrozzlerWorker:
             self.logger.trace("%r", chrome_msg)
             if chrome_msg.get("params", {}).get("versions"):
                 url = chrome_msg.get("params", {}).get("versions")[0].get("scriptURL")
-                if url and url not in sw_fetched:
+                if url and url.startswith("http") and url not in sw_fetched:
                     self.logger.info("fetching service worker script %s", url)
                     self._fetch_url(site, url=url)
                     sw_fetched.add(url)
@@ -466,6 +470,7 @@ class BrozzlerWorker:
             skip_extract_outlinks=self._skip_extract_outlinks,
             skip_visit_hashtags=self._skip_visit_hashtags,
             skip_youtube_dl=self._skip_youtube_dl,
+            ytdlp_tmpdir=self._ytdlp_tmpdir,
             simpler404=self._simpler404,
             screenshot_full_page=self._screenshot_full_page,
             page_timeout=self._page_timeout,
@@ -560,11 +565,25 @@ class BrozzlerWorker:
                 # using brozzler-worker --proxy, nothing to do but try the
                 # same proxy again next time
                 logging.error("proxy error (self._proxy=%r)", self._proxy, exc_info=1)
-        except:
+        except (brozzler.PageConnectionError, Exception) as e:
+            if isinstance(e, brozzler.PageConnectionError):
+                self.logger.error(
+                    "Page status code possibly indicates connection failure between host and warcprox: site=%r page=%r",
+                    site,
+                    page,
+                    exc_info=True,
+                )
+            else:
                 self.logger.error(
                     "unexpected exception site=%r page=%r", site, page, exc_info=True
                 )
             if page:
+                # Calculate backoff in seconds based on number of failed attempts.
+                # Minimum of 60, max of 135 giving delays of 60, 90, 135, 135...
+                retry_delay = min(135, 60 * (1.5**page.failed_attempts))
+                page.retry_after = doublethink.utcnow() + datetime.timedelta(
+                    seconds=retry_delay
+                )
                 page.failed_attempts = (page.failed_attempts or 0) + 1
                 if page.failed_attempts >= brozzler.MAX_PAGE_FAILURES:
                     self.logger.info(
@@ -575,6 +594,8 @@ class BrozzlerWorker:
                     )
                     self._frontier.completed_page(site, page)
                     page = None
+                else:
+                    page.save()
         finally:
             if start:
                 site.active_brozzling_time = (

brozzler/ydl.py

@@ -34,8 +34,9 @@ import time
 
 thread_local = threading.local()
 
+
 YTDLP_PROXY = ""
-MAX_YTDLP_ATTEMPTS = 4
+PROXY_ATTEMPTS = 4
 YTDLP_WAIT = 10
 
 
@@ -314,8 +315,9 @@ def _remember_videos(page, pushed_videos=None):
 
 
 def _try_youtube_dl(worker, ydl, site, page):
+    max_attempts = PROXY_ATTEMPTS if ydl.is_youtube_host else 1
     attempt = 0
-    while attempt < MAX_YTDLP_ATTEMPTS:
+    while attempt < max_attempts:
         try:
             logging.info("trying yt-dlp on %s", ydl.url)
             # should_download_vid = not ydl.is_youtube_host
@@ -353,9 +355,9 @@ def _try_youtube_dl(worker, ydl, site, page):
                 # OSError('Tunnel connection failed: 464 Host Not Allowed') (caused by ProxyError...)
                 # and others...
                 attempt += 1
-                if attempt == MAX_YTDLP_ATTEMPTS:
+                if attempt == max_attempts:
                     logging.warning(
-                        "Failed after %s attempts. Error: %s", MAX_YTDLP_ATTEMPTS, e
+                        "Failed after %s attempt(s). Error: %s", max_attempts, e
                     )
                     raise brozzler.VideoExtractorError(
                         "yt-dlp hit error extracting info for %s" % ydl.url
@@ -409,7 +411,10 @@ def do_youtube_dl(worker, site, page):
     Returns:
          `list` of `str`: outlink urls
     """
-    with tempfile.TemporaryDirectory(prefix="brzl-ydl-") as tempdir:
+    with tempfile.TemporaryDirectory(
+        prefix="brzl-ydl-", dir=worker._ytdlp_tmpdir
+    ) as tempdir:
+        logging.info("tempdir for yt-dlp: %s", tempdir)
         ydl = _build_youtube_dl(worker, tempdir, site, page)
         ie_result = _try_youtube_dl(worker, ydl, site, page)
         outlinks = set()

setup.py

@@ -34,7 +34,7 @@ def find_package_data(package):
 
 setuptools.setup(
     name="brozzler",
-    version="1.6.3",
+    version="1.6.5",
     description="Distributed web crawling with browsers",
     url="https://github.com/internetarchive/brozzler",
     author="Noah Levitt",