Merge 443fcc7233 into 0f9694c90b

Engine was added in #2733 but the API does no longer exists. Related:

- https://github.com/searxng/searxng/issues/4038

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

docs/index.rst

@@ -4,22 +4,27 @@ Welcome to SearXNG
 
   *Search without being tracked.*
 
-SearXNG is a free internet metasearch engine which aggregates results from more
-than 70 search services.  Users are neither tracked nor profiled.  Additionally,
-SearXNG can be used over Tor for online anonymity.
+.. jinja:: searx
+
+   SearXNG is a free internet metasearch engine which aggregates results from up
+   to {{engines | length}} :ref:`search services <configured engines>`.  Users
+   are neither tracked nor profiled.  Additionally, SearXNG can be used over Tor
+   for online anonymity.
 
 Get started with SearXNG by using one of the instances listed at searx.space_.
 If you don't trust anyone, you can set up your own, see :ref:`installation`.
 
+.. jinja:: searx
+
    .. sidebar::  features
 
       - :ref:`self hosted <installation>`
       - :ref:`no user tracking / no profiling <SearXNG protect privacy>`
       - script & cookies are optional
       - secure, encrypted connections
-   - :ref:`about 200 search engines <configured engines>`
-   - `about 60 translations <https://translate.codeberg.org/projects/searxng/searxng/>`_
-   - about 100 `well maintained <https://uptime.searxng.org/>`__ instances on searx.space_
+      - :ref:`{{engines | length}} search engines <configured engines>`
+      - `58 translations <https://translate.codeberg.org/projects/searxng/searxng/>`_
+      - about 70 `well maintained <https://uptime.searxng.org/>`__ instances on searx.space_
       - :ref:`easy integration of search engines <demo online engine>`
       - professional development: `CI <https://github.com/searxng/searxng/actions>`_,
 	`quality assurance <https://dev.searxng.org/>`_ &

searx/engines/internet_archive_scholar.py

@@ -1,71 +0,0 @@
-# SPDX-License-Identifier: AGPL-3.0-or-later
-"""Internet Archive scholar(science)
-"""
-
-from datetime import datetime
-from urllib.parse import urlencode
-from searx.utils import html_to_text
-
-about = {
-    "website": "https://scholar.archive.org/",
-    "wikidata_id": "Q115667709",
-    "official_api_documentation": "https://scholar.archive.org/api/redoc",
-    "use_official_api": True,
-    "require_api_key": False,
-    "results": "JSON",
-}
-categories = ['science', 'scientific publications']
-paging = True
-
-base_url = "https://scholar.archive.org"
-results_per_page = 15
-
-
-def request(query, params):
-    args = {
-        "q": query,
-        "limit": results_per_page,
-        "offset": (params["pageno"] - 1) * results_per_page,
-    }
-    params["url"] = f"{base_url}/search?{urlencode(args)}"
-    params["headers"]["Accept"] = "application/json"
-    return params
-
-
-def response(resp):
-    results = []
-
-    json = resp.json()
-
-    for result in json["results"]:
-        publishedDate, content, doi = None, '', None
-
-        if result['biblio'].get('release_date'):
-            publishedDate = datetime.strptime(result['biblio']['release_date'], "%Y-%m-%d")
-
-        if len(result['abstracts']) > 0:
-            content = result['abstracts'][0].get('body')
-        elif len(result['_highlights']) > 0:
-            content = result['_highlights'][0]
-
-        if len(result['releases']) > 0:
-            doi = result['releases'][0].get('doi')
-
-        results.append(
-            {
-                'template': 'paper.html',
-                'url': result['fulltext']['access_url'],
-                'title': result['biblio'].get('title') or result['biblio'].get('container_name'),
-                'content': html_to_text(content),
-                'publisher': result['biblio'].get('publisher'),
-                'doi': doi,
-                'journal': result['biblio'].get('container_name'),
-                'authors': result['biblio'].get('contrib_names'),
-                'tags': result['tags'],
-                'publishedDate': publishedDate,
-                'issns': result['biblio'].get('issns'),
-                'pdf_url': result['fulltext'].get('access_url'),
-            }
-        )
-
-    return results

searx/engines/loc.py

@@ -27,7 +27,7 @@ categories = ['images']
 paging = True
 
 endpoint = 'photos'
-base_url = 'https://loc.gov'
+base_url = 'https://www.loc.gov'
 search_string = "/{endpoint}/?sp={page}&{query}&fo=json"
 
 

searx/metrics/__init__.py

@@ -8,6 +8,7 @@ from timeit import default_timer
 from operator import itemgetter
 
 from searx.engines import engines
+from searx.openmetrics import OpenMetricsFamily
 from .models import HistogramStorage, CounterStorage, VoidHistogram, VoidCounterStorage
 from .error_recorder import count_error, count_exception, errors_per_engines
 
@@ -149,7 +150,9 @@ def get_reliabilities(engline_name_list, checker_results):
         checker_result = checker_results.get(engine_name, {})
         checker_success = checker_result.get('success', True)
         errors = engine_errors.get(engine_name) or []
-        if counter('engine', engine_name, 'search', 'count', 'sent') == 0:
+        sent_count = counter('engine', engine_name, 'search', 'count', 'sent')
+
+        if sent_count == 0:
             # no request
             reliability = None
         elif checker_success and not errors:
@@ -164,8 +167,9 @@ def get_reliabilities(engline_name_list, checker_results):
 
         reliabilities[engine_name] = {
             'reliability': reliability,
+            'sent_count': sent_count,
             'errors': errors,
-            'checker': checker_results.get(engine_name, {}).get('errors', {}),
+            'checker': checker_result.get('errors', {}),
         }
     return reliabilities
 
@@ -245,3 +249,53 @@ def get_engines_stats(engine_name_list):
         'max_time': math.ceil(max_time_total or 0),
         'max_result_count': math.ceil(max_result_count or 0),
     }
+
+
+def openmetrics(engine_stats, engine_reliabilities):
+    metrics = [
+        OpenMetricsFamily(
+            key="searxng_engines_response_time_total_seconds",
+            type_hint="gauge",
+            help_hint="The average total response time of the engine",
+            data_info=[{'engine_name': engine['name']} for engine in engine_stats['time']],
+            data=[engine['total'] for engine in engine_stats['time']],
+        ),
+        OpenMetricsFamily(
+            key="searxng_engines_response_time_processing_seconds",
+            type_hint="gauge",
+            help_hint="The average processing response time of the engine",
+            data_info=[{'engine_name': engine['name']} for engine in engine_stats['time']],
+            data=[engine['processing'] for engine in engine_stats['time']],
+        ),
+        OpenMetricsFamily(
+            key="searxng_engines_response_time_http_seconds",
+            type_hint="gauge",
+            help_hint="The average HTTP response time of the engine",
+            data_info=[{'engine_name': engine['name']} for engine in engine_stats['time']],
+            data=[engine['http'] for engine in engine_stats['time']],
+        ),
+        OpenMetricsFamily(
+            key="searxng_engines_result_count_total",
+            type_hint="counter",
+            help_hint="The total amount of results returned by the engine",
+            data_info=[{'engine_name': engine['name']} for engine in engine_stats['time']],
+            data=[engine['result_count'] for engine in engine_stats['time']],
+        ),
+        OpenMetricsFamily(
+            key="searxng_engines_request_count_total",
+            type_hint="counter",
+            help_hint="The total amount of user requests made to this engine",
+            data_info=[{'engine_name': engine['name']} for engine in engine_stats['time']],
+            data=[engine_reliabilities.get(engine['name'], {}).get('sent_count', 0) for engine in engine_stats['time']],
+        ),
+        OpenMetricsFamily(
+            key="searxng_engines_reliability_total",
+            type_hint="counter",
+            help_hint="The overall reliability of the engine",
+            data_info=[{'engine_name': engine['name']} for engine in engine_stats['time']],
+            data=[
+                engine_reliabilities.get(engine['name'], {}).get('reliability', 0) for engine in engine_stats['time']
+            ],
+        ),
+    ]
+    return "".join([str(metric) for metric in metrics])

searx/network/network.py

@@ -233,8 +233,7 @@ class Network:
             del kwargs['raise_for_httperror']
         return do_raise_for_httperror
 
-    @staticmethod
-    def patch_response(response, do_raise_for_httperror):
+    def patch_response(self, response, do_raise_for_httperror):
         if isinstance(response, httpx.Response):
             # requests compatibility (response is not streamed)
             # see also https://www.python-httpx.org/compatibility/#checking-for-4xx5xx-responses
@@ -242,8 +241,11 @@ class Network:
 
             # raise an exception
             if do_raise_for_httperror:
+                try:
                     raise_for_httperror(response)
-
+                except:
+                    self._logger.warning(f"HTTP Request failed: {response.request.method} {response.request.url}")
+                    raise
         return response
 
     def is_valid_response(self, response):
@@ -269,7 +271,7 @@ class Network:
                 else:
                     response = await client.request(method, url, **kwargs)
                 if self.is_valid_response(response) or retries <= 0:
-                    return Network.patch_response(response, do_raise_for_httperror)
+                    return self.patch_response(response, do_raise_for_httperror)
             except httpx.RemoteProtocolError as e:
                 if not was_disconnected:
                     # the server has closed the connection:

searx/openmetrics.py

@@ -0,0 +1,35 @@
+# SPDX-License-Identifier: AGPL-3.0-or-later
+"""Module providing support for displaying data in OpenMetrics format"""
+
+
+class OpenMetricsFamily:  # pylint: disable=too-few-public-methods
+    """A family of metrics.
+    The key parameter is the metric name that should be used (snake case).
+    The type_hint parameter must be one of 'counter', 'gauge', 'histogram', 'summary'.
+    The help_hint parameter is a short string explaining the metric.
+    The data_info parameter is a dictionary of descriptionary parameters for the data point (e.g. request method/path).
+    The data parameter is a flat list of the actual data in shape of a primive type.
+
+    See https://github.com/OpenObservability/OpenMetrics/blob/main/specification/OpenMetrics.md for more information.
+    """
+
+    def __init__(self, key: str, type_hint: str, help_hint: str, data_info: list, data: list):
+        self.key = key
+        self.type_hint = type_hint
+        self.help_hint = help_hint
+        self.data_info = data_info
+        self.data = data
+
+    def __str__(self):
+        text_representation = f"""# HELP {self.key} {self.help_hint}
+# TYPE {self.key} {self.type_hint}
+"""
+
+        for i in range(0, len(self.data_info)):
+            if not self.data[i] and self.data[i] != 0:
+                continue
+
+            info_representation = ','.join([f"{key}=\"{value}\"" for (key, value) in self.data_info[i].items()])
+            text_representation += f"{self.key}{{{info_representation}}} {self.data[i]}\n"
+
+        return text_representation

searx/search/processors/online.py

@@ -137,9 +137,6 @@ class OnlineProcessor(EngineProcessor):
         self.engine.request(query, params)
 
         # ignoring empty urls
-        if params['url'] is None:
-            return None
-
         if not params['url']:
             return None
 

searx/settings.yml

@@ -12,6 +12,10 @@ general:
   contact_url: false
   # record stats
   enable_metrics: true
+  # expose stats in open metrics format at /metrics
+  # leave empty to disable (no password set)
+  # open_metrics: <password>
+  open_metrics: ''
 
 brand:
   new_issue_url: https://github.com/searxng/searxng/issues/new
@@ -1622,11 +1626,6 @@ engines:
     api_site: 'askubuntu'
     categories: [it, q&a]
 
-  - name: internetarchivescholar
-    engine: internet_archive_scholar
-    shortcut: ias
-    timeout: 15.0
-
   - name: superuser
     engine: stackexchange
     shortcut: su

searx/settings_defaults.py

@@ -143,6 +143,7 @@ SCHEMA = {
         'contact_url': SettingsValue((None, False, str), None),
         'donation_url': SettingsValue((bool, str), "https://docs.searxng.org/donate.html"),
         'enable_metrics': SettingsValue(bool, True),
+        'open_metrics': SettingsValue(str, ''),
     },
     'brand': {
         'issue_url': SettingsValue(str, 'https://github.com/searxng/searxng/issues'),

searx/webapp.py

@@ -87,10 +87,7 @@ from searx.webadapter import (
     get_selected_categories,
     parse_lang,
 )
-from searx.utils import (
-    gen_useragent,
-    dict_subset,
-)
+from searx.utils import gen_useragent, dict_subset
 from searx.version import VERSION_STRING, GIT_URL, GIT_BRANCH
 from searx.query import RawTextQuery
 from searx.plugins import Plugin, plugins, initialize as plugin_initialize
@@ -104,13 +101,7 @@ from searx.answerers import (
     answerers,
     ask,
 )
-from searx.metrics import (
-    get_engines_stats,
-    get_engine_errors,
-    get_reliabilities,
-    histogram,
-    counter,
-)
+from searx.metrics import get_engines_stats, get_engine_errors, get_reliabilities, histogram, counter, openmetrics
 from searx.flaskfix import patch_application
 
 from searx.locales import (
@@ -1218,6 +1209,30 @@ def stats_checker():
     return jsonify(result)
 
 
+@app.route('/metrics')
+def stats_open_metrics():
+    password = settings['general'].get("open_metrics")
+
+    if not (settings['general'].get("enable_metrics") and password):
+        return Response('open metrics is disabled', status=404, mimetype='text/plain')
+
+    if not request.authorization or request.authorization.password != password:
+        return Response('access forbidden', status=401, mimetype='text/plain')
+
+    filtered_engines = dict(filter(lambda kv: request.preferences.validate_token(kv[1]), engines.items()))
+
+    checker_results = checker_get_result()
+    checker_results = (
+        checker_results['engines'] if checker_results['status'] == 'ok' and 'engines' in checker_results else {}
+    )
+
+    engine_stats = get_engines_stats(filtered_engines)
+    engine_reliabilities = get_reliabilities(filtered_engines, checker_results)
+    metrics_text = openmetrics(engine_stats, engine_reliabilities)
+
+    return Response(metrics_text, mimetype='text/plain')
+
+
 @app.route('/robots.txt', methods=['GET'])
 def robots():
     return Response(