🏷 — Bump version (0.9.0)

💥 Old results are now removed by their age, not based on their number.

💥 Warning: `max_results` setting has been replaced by `max_results_age`, which is a duration.
Use `argos server generate-config > /etc/argos/config.yaml-dist` to generate
a new example configuration file.

CHANGELOG.md

@@ -2,6 +2,97 @@
 
 ## [Unreleased]
 
+## 0.9.0
+
+Date: 2025-02-18
+
+- 🐛 — Fix worker timeout for old results cleaning in recurring tasks (#84)
+
+💥 Old results are now removed by their age, not based on their number.
+
+💥 Warning: `max_results` setting has been replaced by `max_results_age`, which is a duration.
+Use `argos server generate-config > /etc/argos/config.yaml-dist` to generate
+a new example configuration file.
+
+## 0.8.2
+
+Date: 2025-02-18
+
+- 🐛 — Fix recurring tasks with gunicorn
+
+## 0.8.1
+
+Date: 2025-02-18
+
+- 🐛 — Fix todo enum in jobs table
+
+## 0.8.0
+
+Date: 2025-02-18
+
+- ✨ — Allow to customize agent User-Agent header (#78)
+- 📝 — Document how to add data to requests (#77)
+- ✨ — No need cron tasks for DB cleaning anymore (#74 and #75)
+- ✨ — No need cron tasks for agents watching (#76)
+- ✨ — Reload configuration asynchronously (#79)
+- 🐛 — Automatically reconnect to LDAP if unreachable (#81)
+- 🐛 — Better httpx.RequestError handling (#83)
+
+💥 Warning: there is new settings to add to your configuration file.
+Use `argos server generate-config > /etc/argos/config.yaml-dist` to generate
+a new example configuration file.
+
+💥 You don’t need cron tasks anymore!
+Remove your old cron tasks as they will now do nothing but generating errors.
+
+NB: You may want to add `--enqueue` to `reload-config` command in your systemd file.
+
+## 0.7.4
+
+Date: 2025-02-12
+
+- 🐛 — Fix method enum in tasks table (thx to Dryusdan)
+
+## 0.7.3
+
+Date: 2025-01-26
+
+- 🐛 — Fix bug in retry_before_notification logic when success
+
+## 0.7.2
+
+Date: 2025-01-24
+
+- 🐛 — Fix bug in retry_before_notification logic
+
+## 0.7.1
+
+Date: 2025-01-15
+
+- 🩹 — Avoid warning from MySQL only alembic instructions
+- 🩹 — Check before adding/removing ip_version_enum
+- 📝 — Improve release documentation
+
+
+## 0.7.0
+
+Date: 2025-01-14
+
+- ✨ — IPv4/IPv6 choice for checks, and choice for a dual-stack check (#69)
+- ⚡ — Mutualize check requests (#68)
+- ✨ — Ability to delay notification after X failures (#71)
+- 🐛 — Fix bug when changing IP version not removing tasks (#72)
+- ✨ — Allow to specify form data and headers for checks (#70)
+- 🚸 — Add a long expiration date on auto-refresh cookies
+- 🗃️ — Use bigint type for results id column in PostgreSQL (#73)
+
+## 0.6.1
+
+Date: 2024-11-28
+
+- 🐛 - Fix database migrations without default values
+- 🐛 - Fix domain status selector’s bug on page refresh
+
 ## 0.6.0
 
 Date: 2024-11-28

argos/__init__.py

@@ -1 +1 @@
-VERSION = "0.6.0"
+VERSION = "0.9.0"

argos/agent.py

@@ -6,6 +6,7 @@ import asyncio
 import json
 import logging
 import socket
+from hashlib import md5
 from time import sleep
 from typing import List
 
@@ -33,26 +34,47 @@ def log_failure(retry_state):
     )
 
 
-class ArgosAgent:
+class ArgosAgent:  # pylint: disable-msg=too-many-instance-attributes
     """The Argos agent is responsible for running the checks and reporting the results."""
 
-    def __init__(self, server: str, auth: str, max_tasks: int, wait_time: int):
+    def __init__(  # pylint: disable-msg=too-many-positional-arguments
+        self, server: str, auth: str, max_tasks: int, wait_time: int, user_agent: str
+    ):
         self.server = server
         self.max_tasks = max_tasks
         self.wait_time = wait_time
         self.auth = auth
-        self._http_client = None
+        if user_agent == "":
+            self.ua = user_agent
+        else:
+            self.ua = f" - {user_agent}"
+        self._http_client: httpx.AsyncClient | None = None
+        self._http_client_v4: httpx.AsyncClient | None = None
+        self._http_client_v6: httpx.AsyncClient | None = None
+        self._res_cache: dict[str, httpx.Response] = {}
 
         self.agent_id = socket.gethostname()
 
     @retry(after=log_failure, wait=wait_random(min=1, max=2))
     async def run(self):
-        headers = {
+        auth_header = {
             "Authorization": f"Bearer {self.auth}",
-            "User-Agent": f"Argos Panoptes {VERSION} "
-            "(about: https://argos-monitoring.framasoft.org/)",
+            "User-Agent": f"Argos Panoptes agent {VERSION}{self.ua}",
         }
-        self._http_client = httpx.AsyncClient(headers=headers)
+        self._http_client = httpx.AsyncClient(headers=auth_header)
+
+        ua_header = {
+            "User-Agent": f"Argos Panoptes {VERSION} "
+            f"(about: https://argos-monitoring.framasoft.org/){self.ua}",
+        }
+        self._http_client_v4 = httpx.AsyncClient(
+            headers=ua_header,
+            transport=httpx.AsyncHTTPTransport(local_address="0.0.0.0"),
+        )
+        self._http_client_v6 = httpx.AsyncClient(
+            headers=ua_header, transport=httpx.AsyncHTTPTransport(local_address="::")
+        )
+
         logger.info("Running agent against %s", self.server)
         async with self._http_client:
             while "forever":
@@ -61,35 +83,90 @@ class ArgosAgent:
                     logger.info("Waiting %i seconds before next retry", self.wait_time)
                     await asyncio.sleep(self.wait_time)
 
+    async def _do_request(self, group: str, details: dict):
+        logger.debug("_do_request for group %s", group)
+        headers = {}
+        if details["request_data"] is not None:
+            request_data = json.loads(details["request_data"])
+            if request_data["headers"] is not None:
+                headers = request_data["headers"]
+
+        if details["ip_version"] == "4":
+            http_client = self._http_client_v4
+        else:
+            http_client = self._http_client_v6
+        try:
+            if details["request_data"] is None or request_data["data"] is None:
+                response = await http_client.request(  # type: ignore[union-attr]
+                    method=details["method"],
+                    url=details["url"],
+                    headers=headers,
+                    timeout=60,
+                )
+            elif request_data["json"]:
+                response = await http_client.request(  # type: ignore[union-attr]
+                    method=details["method"],
+                    url=details["url"],
+                    headers=headers,
+                    json=request_data["data"],
+                    timeout=60,
+                )
+            else:
+                response = await http_client.request(  # type: ignore[union-attr]
+                    method=details["method"],
+                    url=details["url"],
+                    headers=headers,
+                    data=request_data["data"],
+                    timeout=60,
+                )
+        except httpx.ReadError:
+            sleep(1)
+            logger.warning("httpx.ReadError for group %s, re-emit request", group)
+            if details["request_data"] is None or request_data["data"] is None:
+                response = await http_client.request(  # type: ignore[union-attr]
+                    method=details["method"], url=details["url"], timeout=60
+                )
+            elif request_data["json"]:
+                response = await http_client.request(  # type: ignore[union-attr]
+                    method=details["method"],
+                    url=details["url"],
+                    json=request_data["data"],
+                    timeout=60,
+                )
+            else:
+                response = await http_client.request(  # type: ignore[union-attr]
+                    method=details["method"],
+                    url=details["url"],
+                    data=request_data["data"],
+                    timeout=60,
+                )
+        except httpx.RequestError as err:
+            logger.warning("httpx.RequestError for group %s", group)
+            response = err
+
+        self._res_cache[group] = response
+
     async def _complete_task(self, _task: dict) -> AgentResult:
         try:
             task = Task(**_task)
 
-            url = task.url
-            if task.check == "http-to-https":
-                url = str(httpx.URL(task.url).copy_with(scheme="http"))
-
-            try:
-                response = await self._http_client.request(  # type: ignore[attr-defined]
-                    method=task.method, url=url, timeout=60
-                )
-            except httpx.ReadError:
-                sleep(1)
-                response = await self._http_client.request(  # type: ignore[attr-defined]
-                    method=task.method, url=url, timeout=60
-                )
-
             check_class = get_registered_check(task.check)
             check = check_class(task)
+
+            response = self._res_cache[task.task_group]
+            if isinstance(response, httpx.Response):
                 result = await check.run(response)
                 status = result.status
                 context = result.context
-
+            else:
+                status = "failure"
+                context = SerializableException.from_exception(response)
         except Exception as err:  # pylint: disable=broad-except
             status = "error"
             context = SerializableException.from_exception(err)
             msg = f"An exception occured when running {_task}. {err.__class__.__name__} : {err}"
             logger.error(msg)
+
         return AgentResult(task_id=task.id, status=status, context=context)
 
     async def _get_and_complete_tasks(self):
@@ -100,12 +177,45 @@ class ArgosAgent:
         )
 
         if response.status_code == httpx.codes.OK:
-            # XXX Maybe we want to group the tests by URL ? (to issue one request per URL)
             data = response.json()
             logger.info("Received %i tasks from the server", len(data))
 
+            req_groups = {}
+            _tasks = []
+            for _task in data:
+                task = Task(**_task)
+
+                url = task.url
+                group = task.task_group
+
+                if task.check == "http-to-https":
+                    data = task.request_data
+                    if data is None:
+                        data = ""
+                    url = str(httpx.URL(task.url).copy_with(scheme="http"))
+                    group = (
+                        f"{task.method}-{task.ip_version}-{url}-"
+                        f"{md5(data.encode()).hexdigest()}"
+                    )
+                    _task["task_group"] = group
+
+                req_groups[group] = {
+                    "url": url,
+                    "ip_version": task.ip_version,
+                    "method": task.method,
+                    "request_data": task.request_data,
+                }
+                _tasks.append(_task)
+
+            requests = []
+            for group, details in req_groups.items():
+                requests.append(self._do_request(group, details))
+
+            if requests:
+                await asyncio.gather(*requests)
+
             tasks = []
-            for task in data:
+            for task in _tasks:
                 tasks.append(self._complete_task(task))
 
             if tasks:

argos/commands.py

@@ -92,7 +92,12 @@ def version():
     default="INFO",
     type=click.Choice(logging.LOG_LEVELS, case_sensitive=False),
 )
-def agent(server_url, auth, max_tasks, wait_time, log_level):
+@click.option(
+    "--user-agent",
+    default="",
+    help="A custom string to append to the User-Agent header",
+)
+def agent(server_url, auth, max_tasks, wait_time, log_level, user_agent):  # pylint: disable-msg=too-many-positional-arguments
     """Get and run tasks for the provided server. Will wait for new tasks.
 
     Usage: argos agent https://argos.example.org "auth-token-here"
@@ -108,7 +113,7 @@ def agent(server_url, auth, max_tasks, wait_time, log_level):
     from argos.logging import logger
 
     logger.setLevel(log_level)
-    agent_ = ArgosAgent(server_url, auth, max_tasks, wait_time)
+    agent_ = ArgosAgent(server_url, auth, max_tasks, wait_time, user_agent)
     asyncio.run(agent_.run())
 
 
@@ -135,101 +140,6 @@ def start(host, port, config, reload):
     uvicorn.run("argos.server:app", host=host, port=port, reload=reload)
 
 
-def validate_max_lock_seconds(ctx, param, value):
-    if value <= 60:
-        raise click.BadParameter("Should be strictly higher than 60")
-    return value
-
-
-def validate_max_results(ctx, param, value):
-    if value <= 0:
-        raise click.BadParameter("Should be a positive integer")
-    return value
-
-
-@server.command()
-@click.option(
-    "--max-results",
-    default=100,
-    help="Number of results per task to keep",
-    callback=validate_max_results,
-)
-@click.option(
-    "--max-lock-seconds",
-    default=100,
-    help=(
-        "The number of seconds after which a lock is "
-        "considered stale, must be higher than 60 "
-        "(the checks have a timeout value of 60 seconds)"
-    ),
-    callback=validate_max_lock_seconds,
-)
-@click.option(
-    "--config",
-    default="argos-config.yaml",
-    help="Path of the configuration file. "
-    "If ARGOS_YAML_FILE environment variable is set, its value will be used instead. "
-    "Default value: argos-config.yaml and /etc/argos/config.yaml as fallback.",
-    envvar="ARGOS_YAML_FILE",
-    callback=validate_config_access,
-)
-@coroutine
-async def cleandb(max_results, max_lock_seconds, config):
-    """Clean the database (to run routinely)
-
-    \b
-    - Removes old results from the database.
-    - Removes locks from tasks that have been locked for too long.
-    """
-    # It’s mandatory to do it before the imports
-    os.environ["ARGOS_YAML_FILE"] = config
-
-    # The imports are made here otherwise the agent will need server configuration files.
-    from argos.server import queries
-
-    db = await get_db()
-    removed = await queries.remove_old_results(db, max_results)
-    updated = await queries.release_old_locks(db, max_lock_seconds)
-
-    click.echo(f"{removed} results removed")
-    click.echo(f"{updated} locks released")
-
-
-@server.command()
-@click.option(
-    "--time-without-agent",
-    default=5,
-    help="Time without seeing an agent after which a warning will be issued, in minutes. "
-    "Default is 5 minutes.",
-    callback=validate_max_results,
-)
-@click.option(
-    "--config",
-    default="argos-config.yaml",
-    help="Path of the configuration file. "
-    "If ARGOS_YAML_FILE environment variable is set, its value will be used instead.",
-    envvar="ARGOS_YAML_FILE",
-    callback=validate_config_access,
-)
-@coroutine
-async def watch_agents(time_without_agent, config):
-    """Watch agents (to run routinely)
-
-    Issues a warning if no agent has been seen by the server for a given time.
-    """
-    # It’s mandatory to do it before the imports
-    os.environ["ARGOS_YAML_FILE"] = config
-
-    # The imports are made here otherwise the agent will need server configuration files.
-    from argos.server import queries
-
-    db = await get_db()
-    agents = await queries.get_recent_agents_count(db, time_without_agent)
-    if agents == 0:
-        click.echo(f"No agent has been seen in the last {time_without_agent} minutes.")
-        sysexit(1)
-
-
 @server.command(short_help="Load or reload tasks’ configuration")
 @click.option(
     "--config",
@@ -240,23 +150,40 @@ async def watch_agents(time_without_agent, config):
     envvar="ARGOS_YAML_FILE",
     callback=validate_config_access,
 )
+@click.option(
+    "--enqueue/--no-enqueue",
+    default=False,
+    help="Let Argos main recurring tasks handle configuration’s loading. "
+    "It may delay the application of the new configuration up to 2 minutes. "
+    "Default is --no-enqueue",
+)
 @coroutine
-async def reload_config(config):
+async def reload_config(config, enqueue):
     """Read tasks’ configuration and add/delete tasks in database if needed"""
     # It’s mandatory to do it before the imports
     os.environ["ARGOS_YAML_FILE"] = config
 
     # The imports are made here otherwise the agent will need server configuration files.
     from argos.server import queries
-    from argos.server.main import read_config
+    from argos.server.settings import read_config
 
     _config = read_config(config)
 
     db = await get_db()
+
+    config_changed = await queries.has_config_changed(db, _config)
+    if not config_changed:
+        click.echo("Config has not change")
+    else:
+        if enqueue:
+            msg = await queries.update_from_config_later(db, config_file=config)
+
+            click.echo(msg)
+        else:
             changed = await queries.update_from_config(db, _config)
 
-    click.echo(f"{changed['added']} tasks added")
-    click.echo(f"{changed['vanished']} tasks deleted")
+            click.echo(f"{changed['added']} task(s) added")
+            click.echo(f"{changed['vanished']} task(s) deleted")
 
 
 @server.command()
@@ -570,8 +497,8 @@ async def test_mail(config, domain, severity):
 
     from argos.logging import set_log_level
     from argos.server.alerting import notify_by_mail
-    from argos.server.main import read_config
     from argos.server.models import Result, Task
+    from argos.server.settings import read_config
 
     conf = read_config(config)
 
@@ -586,6 +513,7 @@ async def test_mail(config, domain, severity):
             check="body-contains",
             expected="foo",
             frequency=1,
+            ip_version=4,
             selected_by="test",
             selected_at=now,
         )
@@ -634,8 +562,8 @@ async def test_gotify(config, domain, severity):
 
     from argos.logging import set_log_level
     from argos.server.alerting import notify_with_gotify
-    from argos.server.main import read_config
     from argos.server.models import Result, Task
+    from argos.server.settings import read_config
 
     conf = read_config(config)
 
@@ -650,6 +578,7 @@ async def test_gotify(config, domain, severity):
             check="body-contains",
             expected="foo",
             frequency=1,
+            ip_version=4,
             selected_by="test",
             selected_at=now,
         )
@@ -701,8 +630,8 @@ async def test_apprise(config, domain, severity, apprise_group):
 
     from argos.logging import set_log_level
     from argos.server.alerting import notify_with_apprise
-    from argos.server.main import read_config
     from argos.server.models import Result, Task
+    from argos.server.settings import read_config
 
     conf = read_config(config)
 
@@ -717,6 +646,7 @@ async def test_apprise(config, domain, severity, apprise_group):
             check="body-contains",
             expected="foo",
             frequency=1,
+            ip_version=4,
             selected_by="test",
             selected_at=now,
         )

argos/config-example.yaml

@@ -64,6 +64,29 @@ general:
   # For ex., to re-try a check one minute after a failure:
   # recheck_delay: "1m"
 
+  # Default setting for notifications delay.
+  # Say you want to be warned right after a failure on a check: set it to 0
+  # Say you want a second failure on the check before being warned,
+  # to avoid network hiccups: set it to 1
+  # Can be superseeded in domain configuration
+  # If not present, default is 0
+  # retry_before_notification: 0
+
+  # Defaults settings for IPv4/IPv6
+  # Can be superseeded in domain configuration.
+  # By default, Argos will check both IPv4 and IPv6 addresses of a domain
+  # (i.e. by default, both `ipv4` and `ipv6` are set to true).
+  # To disable the IPv4 check of domains:
+  # ipv4: false
+  # To disable the IPv6 check of domains:
+  # ipv6: false
+
+  # Argos root path
+  # If not present, default value is ""
+  # Set it to /foo if you want to use argos at /foo/ instead of /
+  # on your web server
+  # root_path: "/foo"
+
   # Which way do you want to be warned when a check goes to that severity?
   # "local" emits a message in the server log
   # You’ll need to configure mail, gotify or apprise below to be able to use
@@ -79,11 +102,10 @@ general:
       - local
     unknown:
       - local
-  # Argos root path
-  # If not present, default value is ""
-  # Set it to /foo if you want to use argos at /foo/ instead of /
-  # on your web server
-  # root_path: "/foo"
+    # This alert is triggered when no Argos agent has been seen in a while
+    # See recurring_tasks.time_without_agent below
+    no_agent:
+      - local
   # Mail configuration is quite straight-forward
   # mail:
   #   mailfrom: no-reply@example.org
@@ -127,6 +149,22 @@ ssl:
     - "1d": critical
     - "5d": warning
 
+# Argos will execute some tasks in the background for you
+# every 2 minutes and needs some configuration for that
+recurring_tasks:
+  # Maximum age of results
+  # Use m for minutes, h for hours, d for days
+  # w for weeks, M for months, y for years
+  # See https://github.com/timwedde/durations_nlp#scales-reference for details
+  max_results_age: "1d"
+  # Max number of seconds a task can be locked
+  # Minimum value is 61, default is 100
+  max_lock_seconds: 100
+  # Max number of minutes without seing an agent
+  # before sending an alert
+  # Minimum value is 1, default is 5
+  time_without_agent: 5
+
 # It's also possible to define the checks in another file
 # with the include syntax:
 #
@@ -134,6 +172,8 @@ ssl:
 #
 websites:
   - domain: "https://mypads.example.org"
+    # Wait for a second failure before sending notification
+    retry_before_notification: 1
     paths:
       - path: "/mypads/"
         # Specify the method of the HTTP request
@@ -171,6 +211,17 @@ websites:
               - 302
               - 307
       - path: "/admin/"
+        methode: "POST"
+        # Send form data in the request
+        request_data:
+          data:
+            login: "admin"
+            password: "my-password"
+          # To send data as JSON (optional, default is false):
+          is_json: true
+          # To send additional headers
+          headers:
+            Authorization: "Bearer foo-bar-baz"
         checks:
           # Check that the return HTTP status is one of those
           # Similar to status-is, verify that you don’t mistyped it!
@@ -213,6 +264,8 @@ websites:
   - domain: "https://munin.example.org"
     frequency: "20m"
     recheck_delay: "5m"
+    # Let’s say it’s an IPv6 only web site
+    ipv4: false
     paths:
       - path: "/"
         checks:

argos/logging.py

@@ -14,9 +14,10 @@ logger = logging.getLogger(__name__)
 
 
 # XXX Does not work ?
-def set_log_level(log_level):
+def set_log_level(log_level: str, quiet: bool = False):
     level = getattr(logging, log_level.upper(), None)
     if not isinstance(level, int):
         raise ValueError(f"Invalid log level: {log_level}")
     logger.setLevel(level=level)
+    if not quiet:
         logger.info("Log level set to %s", log_level)

argos/schemas/config.py

@@ -5,7 +5,7 @@ For database models, see argos.server.models.
 
 import json
 
-from typing import Dict, List, Literal, Tuple
+from typing import Any, Dict, List, Literal, Tuple
 
 from durations_nlp import Duration
 from pydantic import (
@@ -18,7 +18,7 @@ from pydantic import (
     PositiveInt,
     field_validator,
 )
-from pydantic.functional_validators import BeforeValidator
+from pydantic.functional_validators import AfterValidator, BeforeValidator
 from pydantic.networks import UrlConstraints
 from pydantic_core import Url
 from typing_extensions import Annotated
@@ -48,6 +48,33 @@ class SSL(BaseModel):
     thresholds: List[Annotated[Tuple[int, Severity], BeforeValidator(parse_threshold)]]
 
 
+class RecurringTasks(BaseModel):
+    max_results_age: float
+    max_lock_seconds: int
+    time_without_agent: int
+
+    @field_validator("max_results_age", mode="before")
+    def parse_max_results_age(cls, value):
+        """Convert the configured maximum results age to seconds"""
+        return Duration(value).to_seconds()
+
+    @field_validator("max_lock_seconds", mode="before")
+    def parse_max_lock_seconds(cls, value):
+        """Ensure that max_lock_seconds is higher or equal to agent’s requests timeout (60)"""
+        if value > 60:
+            return value
+
+        return 100
+
+    @field_validator("time_without_agent", mode="before")
+    def parse_time_without_agent(cls, value):
+        """Ensure that time_without_agent is at least one minute"""
+        if value >= 1:
+            return value
+
+        return 5
+
+
 class WebsiteCheck(BaseModel):
     key: str
     value: str | List[str] | Dict[str, str]
@@ -104,9 +131,26 @@ def parse_checks(value):
         return (name, expected)
 
 
+def parse_request_data(value):
+    """Turn form or JSON data into JSON string"""
+
+    return json.dumps(
+        {"data": value.data, "json": value.is_json, "headers": value.headers}
+    )
+
+
+class RequestData(BaseModel):
+    data: Any = None
+    is_json: bool = False
+    headers: Dict[str, str] | None = None
+
+
 class WebsitePath(BaseModel):
     path: str
     method: Method = "GET"
+    request_data: Annotated[
+        RequestData, AfterValidator(parse_request_data)
+    ] | None = None
     checks: List[
         Annotated[
             Tuple[str, str],
@@ -117,8 +161,11 @@ class WebsitePath(BaseModel):
 
 class Website(BaseModel):
     domain: HttpUrl
+    ipv4: bool | None = None
+    ipv6: bool | None = None
     frequency: float | None = None
     recheck_delay: float | None = None
+    retry_before_notification: int | None = None
     paths: List[WebsitePath]
 
     @field_validator("frequency", mode="before")
@@ -170,6 +217,7 @@ class Alert(BaseModel):
     warning: List[str]
     critical: List[str]
     unknown: List[str]
+    no_agent: List[str]
 
 
 class GotifyUrl(BaseModel):
@@ -204,6 +252,9 @@ class General(BaseModel):
     ldap: LdapSettings | None = None
     frequency: float
     recheck_delay: float | None = None
+    retry_before_notification: int = 0
+    ipv4: bool = True
+    ipv6: bool = True
     root_path: str = ""
     alerts: Alert
     mail: Mail | None = None
@@ -241,4 +292,5 @@ class Config(BaseModel):
     general: General
     service: Service
     ssl: SSL
+    recurring_tasks: RecurringTasks
     websites: List[Website]

argos/schemas/models.py

@@ -8,20 +8,39 @@ from typing import Literal
 
 from pydantic import BaseModel, ConfigDict
 
-from argos.schemas.utils import Method
+from argos.schemas.utils import IPVersion, Method, Todo
 
 # XXX Refactor using SQLModel to avoid duplication of model data
 
 
+class Job(BaseModel):
+    """Tasks needing to be executed in recurring tasks processing.
+    It’s quite like a job queue."""
+
+    id: int
+    todo: Todo
+    args: str
+    current: bool
+    added_at: datetime
+
+    def __str__(self):
+        return f"Job ({self.id}): {self.todo}"
+
+
 class Task(BaseModel):
     """A task corresponds to a check to execute"""
 
     id: int
     url: str
     domain: str
+    ip_version: IPVersion
     check: str
     method: Method
+    request_data: str | None
     expected: str
+    task_group: str
+    retry_before_notification: int
+    contiguous_failures: int
     selected_at: datetime | None
     selected_by: str | None
 
@@ -31,7 +50,8 @@ class Task(BaseModel):
         task_id = self.id
         url = self.url
         check = self.check
-        return f"Task ({task_id}): {url} - {check}"
+        ip_version = self.ip_version
+        return f"Task ({task_id}): {url} (IPv{ip_version}) - {check}"
 
 
 class SerializableException(BaseModel):

argos/schemas/utils.py

@@ -1,6 +1,10 @@
 from typing import Literal
 
 
+IPVersion = Literal["4", "6"]
+
 Method = Literal[
     "GET", "HEAD", "POST", "OPTIONS", "CONNECT", "TRACE", "PUT", "PATCH", "DELETE"
 ]
+
+Todo = Literal["RELOAD_CONFIG"]

argos/server/alerting.py

@@ -11,6 +11,55 @@ import httpx
 from argos.checks.base import Severity
 from argos.logging import logger
 from argos.schemas.config import Config, Mail, GotifyUrl
+from argos.server.models import Task
+
+
+def need_alert(
+    last_severity: str, last_severity_update, severity: str, status: str, task: Task
+) -> bool:
+    ## Create alert… or not!
+    send_notif = False
+    # Severity has changed, and no retry before notification
+    if last_severity != severity and task.retry_before_notification == 0:
+        send_notif = True
+    # Seems to be a first check: create a notification
+    elif last_severity != severity and last_severity_update is None:
+        send_notif = True
+        # As we created a notification, avoid resending it on a
+        # future failure
+        if status != "success":
+            task.contiguous_failures = task.retry_before_notification
+    # We need retry before notification, so the severity may not have changed
+    # since last check
+    elif task.retry_before_notification != 0:
+        # If we got a success, and we already have created a notification:
+        # create notification of success immediately
+        if (
+            status == "success"
+            and task.contiguous_failures >= task.retry_before_notification + 1
+        ):
+            send_notif = True
+            task.contiguous_failures = 0
+        # The status is not a success
+        elif status != "success":
+            # This is a new failure
+            task.contiguous_failures += 1
+            # Severity has changed, but not to success, that’s odd:
+            # create a notification
+            if (
+                last_severity not in ("ok", severity)
+                and last_severity_update is not None
+            ):
+                send_notif = True
+                # As we created a notification, avoid resending it on a
+                # future failure
+                task.contiguous_failures = task.retry_before_notification
+            # Severity has not changed, but there has been enough failures
+            # to create a notification
+            elif task.contiguous_failures == task.retry_before_notification + 1:
+                send_notif = True
+
+    return send_notif
 
 
 def get_icon_from_severity(severity: str) -> str:
@@ -25,6 +74,91 @@ def get_icon_from_severity(severity: str) -> str:
     return icon
 
 
+def send_mail(mail: EmailMessage, config: Mail):
+    """Send message by mail"""
+
+    if config.ssl:
+        logger.debug("Mail notification: SSL")
+        context = ssl.create_default_context()
+        smtp = smtplib.SMTP_SSL(host=config.host, port=config.port, context=context)
+    else:
+        smtp = smtplib.SMTP(
+            host=config.host,  # type: ignore
+            port=config.port,
+        )
+        if config.starttls:
+            logger.debug("Mail notification: STARTTLS")
+            context = ssl.create_default_context()
+            smtp.starttls(context=context)
+
+    if config.auth is not None:
+        logger.debug("Mail notification: authentification")
+        smtp.login(config.auth.login, config.auth.password)
+
+    for address in config.addresses:
+        logger.debug("Sending mail to %s", address)
+        logger.debug(mail.get_body())
+        smtp.send_message(mail, to_addrs=address)
+
+
+def send_gotify_msg(config, payload):
+    """Send message with gotify"""
+    headers = {"accept": "application/json", "content-type": "application/json"}
+
+    for url in config:
+        logger.debug("Sending gotify message(s) to %s", url.url)
+        for token in url.tokens:
+            try:
+                res = httpx.post(
+                    f"{url.url}message",
+                    params={"token": token},
+                    headers=headers,
+                    json=payload,
+                )
+                res.raise_for_status()
+            except httpx.RequestError as err:
+                logger.error(
+                    "An error occurred while sending a message to %s with token %s",
+                    err.request.url,
+                    token,
+                )
+
+
+def no_agent_alert(config: Config):
+    """Alert"""
+    msg = "You should check what’s going on with your Argos agents."
+    twa = config.recurring_tasks.time_without_agent
+    if twa > 1:
+        subject = f"No agent has been seen within the last {twa} minutes"
+    else:
+        subject = "No agent has been seen within the last minute"
+
+    if "local" in config.general.alerts.no_agent:
+        logger.error(subject)
+
+    if config.general.mail is not None and "mail" in config.general.alerts.no_agent:
+        mail = EmailMessage()
+        mail["Subject"] = f"[Argos] {subject}"
+        mail["From"] = config.general.mail.mailfrom
+        mail.set_content(msg)
+        send_mail(mail, config.general.mail)
+
+    if config.general.gotify is not None and "gotify" in config.general.alerts.no_agent:
+        priority = 9
+        payload = {"title": subject, "message": msg, "priority": priority}
+        send_gotify_msg(config.general.gotify, payload)
+
+    if config.general.apprise is not None:
+        for notif_way in config.general.alerts.no_agent:
+            if notif_way.startswith("apprise:"):
+                group = notif_way[8:]
+                apobj = apprise.Apprise()
+                for channel in config.general.apprise[group]:
+                    apobj.add(channel)
+
+                apobj.notify(title=subject, body=msg)
+
+
 def handle_alert(config: Config, result, task, severity, old_severity, request):  # pylint: disable-msg=too-many-positional-arguments
     """Dispatch alert through configured alert channels"""
 
@@ -74,9 +208,9 @@ def notify_with_apprise(  # pylint: disable-msg=too-many-positional-arguments
         apobj.add(channel)
 
     icon = get_icon_from_severity(severity)
-    title = f"[Argos] {icon} {urlparse(task.url).netloc}: status {severity}"
+    title = f"[Argos] {icon} {urlparse(task.url).netloc} (IPv{task.ip_version}): status {severity}"
     msg = f"""\
-URL:    {task.url}
+URL:    {task.url} (IPv{task.ip_version})
 Check:  {task.check}
 Status: {severity}
 Time:   {result.submitted_at}
@@ -97,7 +231,7 @@ def notify_by_mail(  # pylint: disable-msg=too-many-positional-arguments
 
     icon = get_icon_from_severity(severity)
     msg = f"""\
-URL:    {task.url}
+URL:    {task.url} (IPv{task.ip_version})
 Check:  {task.check}
 Status: {severity}
 Time:   {result.submitted_at}
@@ -109,39 +243,18 @@ See results of task on {request.url_for('get_task_results_view', task_id=task.id
 """
 
     mail = EmailMessage()
-    mail["Subject"] = f"[Argos] {icon} {urlparse(task.url).netloc}: status {severity}"
+    mail[
+        "Subject"
+    ] = f"[Argos] {icon} {urlparse(task.url).netloc} (IPv{task.ip_version}): status {severity}"
     mail["From"] = config.mailfrom
     mail.set_content(msg)
-
-    if config.ssl:
-        logger.debug("Mail notification: SSL")
-        context = ssl.create_default_context()
-        smtp = smtplib.SMTP_SSL(host=config.host, port=config.port, context=context)
-    else:
-        smtp = smtplib.SMTP(
-            host=config.host,  # type: ignore
-            port=config.port,
-        )
-        if config.starttls:
-            logger.debug("Mail notification: STARTTLS")
-            context = ssl.create_default_context()
-            smtp.starttls(context=context)
-
-    if config.auth is not None:
-        logger.debug("Mail notification: authentification")
-        smtp.login(config.auth.login, config.auth.password)
-
-    for address in config.addresses:
-        logger.debug("Sending mail to %s", address)
-        logger.debug(msg)
-        smtp.send_message(mail, to_addrs=address)
+    send_mail(mail, config)
 
 
 def notify_with_gotify(  # pylint: disable-msg=too-many-positional-arguments
     result, task, severity: str, old_severity: str, config: List[GotifyUrl], request
 ) -> None:
     logger.debug("Will send gotify notification")
-    headers = {"accept": "application/json", "content-type": "application/json"}
 
     icon = get_icon_from_severity(severity)
     priority = 9
@@ -152,9 +265,11 @@ def notify_with_gotify(  # pylint: disable-msg=too-many-positional-arguments
     elif severity == Severity.UNKNOWN:
         priority = 5
 
-    subject = f"{icon} {urlparse(task.url).netloc}: status {severity}"
+    subject = (
+        f"{icon} {urlparse(task.url).netloc} (IPv{task.ip_version}): status {severity}"
+    )
     msg = f"""\
-URL:    <{task.url}>\\
+URL:    <{task.url}> (IPv{task.ip_version})\\
 Check:  {task.check}\\
 Status: {severity}\\
 Time:   {result.submitted_at}\\
@@ -175,20 +290,4 @@ See results of task on <{request.url_for('get_task_results_view', task_id=task.i
 
     payload = {"title": subject, "message": msg, "priority": priority, "extras": extras}
 
-    for url in config:
-        logger.debug("Sending gotify message(s) to %s", url.url)
-        for token in url.tokens:
-            try:
-                res = httpx.post(
-                    f"{url.url}message",
-                    params={"token": token},
-                    headers=headers,
-                    json=payload,
-                )
-                res.raise_for_status()
-            except httpx.RequestError as err:
-                logger.error(
-                    "An error occurred while sending a message to %s with token %s",
-                    err.request.url,
-                    token,
-                )
+    send_gotify_msg(config, payload)

argos/server/main.py

@@ -1,19 +1,20 @@
 import os
-import sys
 from contextlib import asynccontextmanager
 from pathlib import Path
 
 from fastapi import FastAPI
 from fastapi.staticfiles import StaticFiles
 from fastapi_login import LoginManager
-from pydantic import ValidationError
+from fastapi_utils.tasks import repeat_every
+from psutil import Process
 from sqlalchemy import create_engine, event
 from sqlalchemy.orm import sessionmaker
 
-from argos.logging import logger
+from argos.logging import logger, set_log_level
 from argos.server import models, routes, queries
+from argos.server.alerting import no_agent_alert
 from argos.server.exceptions import NotAuthenticatedException, auth_exception_handler
-from argos.server.settings import read_yaml_config
+from argos.server.settings import read_config
 
 
 def get_application() -> FastAPI:
@@ -39,9 +40,7 @@ def get_application() -> FastAPI:
     if config.general.ldap is not None:
         import ldap
 
-        l = ldap.initialize(config.general.ldap.uri)
-        l.simple_bind_s(config.general.ldap.bind_dn, config.general.ldap.bind_pwd)
-        appli.state.ldap = l
+        appli.state.ldap = ldap.initialize(config.general.ldap.uri)
 
     @appli.state.manager.user_loader()
     async def query_user(user: str) -> None | str | models.User:
@@ -71,17 +70,6 @@ async def connect_to_db(appli):
     return appli.state.db
 
 
-def read_config(yaml_file):
-    try:
-        config = read_yaml_config(yaml_file)
-        return config
-    except ValidationError as err:
-        logger.error("Errors where found while reading configuration:")
-        for error in err.errors():
-            logger.error("%s is %s", error["loc"], error["type"])
-        sys.exit(1)
-
-
 def setup_database(appli):
     config = appli.state.config
     db_url = str(config.general.db.url)
@@ -126,8 +114,47 @@ def create_manager(cookie_secret: str) -> LoginManager:
     )
 
 
+@repeat_every(seconds=120, logger=logger)
+async def recurring_tasks() -> None:
+    """Recurring DB cleanup and watch-agents tasks"""
+    # If we are using gunicorn
+    if not hasattr(app.state, "SessionLocal"):
+        parent_process = Process(os.getppid())
+        children = parent_process.children(recursive=True)
+        # Start the task only once, not for every worker
+        if children[0].pid == os.getpid():
+            # and we need to setup database engine
+            setup_database(app)
+        else:
+            return None
+
+    set_log_level("info", quiet=True)
+    logger.info("Start background recurring tasks")
+
+    with app.state.SessionLocal() as db:
+        config = app.state.config.recurring_tasks
+
+        agents = await queries.get_recent_agents_count(db, config.time_without_agent)
+        if agents == 0:
+            no_agent_alert(app.state.config)
+        logger.info("Agent presence checked")
+
+        removed = await queries.remove_old_results(db, config.max_results_age)
+        logger.info("%i result(s) removed", removed)
+
+        updated = await queries.release_old_locks(db, config.max_lock_seconds)
+        logger.info("%i lock(s) released", updated)
+
+        processed_jobs = await queries.process_jobs(db)
+        logger.info("%i job(s) processed", processed_jobs)
+
+    logger.info("Background recurring tasks ended")
+
+    return None
+
+
 @asynccontextmanager
-async def lifespan(appli):
+async def lifespan(appli: FastAPI):
     """Server start and stop actions
 
     Setup database connection then close it at shutdown.
@@ -142,6 +169,7 @@ async def lifespan(appli):
             "There is no tasks in the database. "
             'Please launch the command "argos server reload-config"'
         )
+    await recurring_tasks()
 
     yield
 

argos/server/migrations/versions/127d74c770bb_add_recheck_delay.py

@@ -21,7 +21,14 @@ depends_on: Union[str, Sequence[str], None] = None
 def upgrade() -> None:
     with op.batch_alter_table("tasks", schema=None) as batch_op:
         batch_op.add_column(sa.Column("recheck_delay", sa.Float(), nullable=True))
-        batch_op.add_column(sa.Column("already_retried", sa.Boolean(), nullable=False))
+        batch_op.add_column(
+            sa.Column(
+                "already_retried",
+                sa.Boolean(),
+                nullable=False,
+                server_default=sa.sql.false(),
+            )
+        )
 
 
 def downgrade() -> None:

argos/server/migrations/versions/31255a412d63_add_form_data_to_tasks.py

@@ -0,0 +1,28 @@
+"""Add request data to tasks
+
+Revision ID: 31255a412d63
+Revises: 80a29f64f91c
+Create Date: 2024-12-09 16:40:20.926138
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = "31255a412d63"
+down_revision: Union[str, None] = "80a29f64f91c"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    with op.batch_alter_table("tasks", schema=None) as batch_op:
+        batch_op.add_column(sa.Column("request_data", sa.String(), nullable=True))
+
+
+def downgrade() -> None:
+    with op.batch_alter_table("tasks", schema=None) as batch_op:
+        batch_op.drop_column("request_data")

argos/server/migrations/versions/5f6cb30db996_add_job_queue.py

@@ -0,0 +1,36 @@
+"""Add job queue
+
+Revision ID: 5f6cb30db996
+Revises: bd4b4962696a
+Create Date: 2025-02-17 16:56:36.673511
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = "5f6cb30db996"
+down_revision: Union[str, None] = "bd4b4962696a"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "jobs",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("todo", sa.Enum("RELOAD_CONFIG", name="todo_enum"), nullable=False),
+        sa.Column("args", sa.String(), nullable=False),
+        sa.Column(
+            "current", sa.Boolean(), server_default=sa.sql.false(), nullable=False
+        ),
+        sa.Column("added_at", sa.DateTime(), nullable=False),
+        sa.PrimaryKeyConstraint("id"),
+    )
+
+
+def downgrade() -> None:
+    op.drop_table("jobs")

argos/server/migrations/versions/64f73a79b7d8_add_ip_version_to_checks.py

@@ -0,0 +1,34 @@
+"""Add IP version to checks
+
+Revision ID: 64f73a79b7d8
+Revises: a1e98cf72a5c
+Create Date: 2024-12-02 14:12:40.558033
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+from sqlalchemy.dialects.postgresql import ENUM
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = "64f73a79b7d8"
+down_revision: Union[str, None] = "a1e98cf72a5c"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    enum = ENUM("4", "6", name="ip_version_enum", create_type=False)
+    enum.create(op.get_bind(), checkfirst=True)
+    with op.batch_alter_table("tasks", schema=None) as batch_op:
+        batch_op.add_column(
+            sa.Column("ip_version", enum, server_default="4", nullable=False)
+        )
+
+
+def downgrade() -> None:
+    with op.batch_alter_table("tasks", schema=None) as batch_op:
+        batch_op.drop_column("ip_version")
+        ENUM(name="ip_version_enum").drop(op.get_bind(), checkfirst=True)

argos/server/migrations/versions/80a29f64f91c_add_retries_before_notification_feature.py

@@ -0,0 +1,41 @@
+"""Add retries before notification feature
+
+Revision ID: 80a29f64f91c
+Revises: 8b58ced14d6e
+Create Date: 2024-12-04 17:03:35.104368
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = "80a29f64f91c"
+down_revision: Union[str, None] = "8b58ced14d6e"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    with op.batch_alter_table("tasks", schema=None) as batch_op:
+        batch_op.add_column(
+            sa.Column(
+                "retry_before_notification",
+                sa.Integer(),
+                server_default="0",
+                nullable=False,
+            )
+        )
+        batch_op.add_column(
+            sa.Column(
+                "contiguous_failures", sa.Integer(), server_default="0", nullable=False
+            )
+        )
+
+
+def downgrade() -> None:
+    with op.batch_alter_table("tasks", schema=None) as batch_op:
+        batch_op.drop_column("contiguous_failures")
+        batch_op.drop_column("retry_before_notification")

argos/server/migrations/versions/8b58ced14d6e_add_task_index.py

@@ -0,0 +1,35 @@
+"""Add task index
+
+Revision ID: 8b58ced14d6e
+Revises: 64f73a79b7d8
+Create Date: 2024-12-03 16:41:44.842213
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = "8b58ced14d6e"
+down_revision: Union[str, None] = "64f73a79b7d8"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    with op.batch_alter_table("tasks", schema=None) as batch_op:
+        batch_op.add_column(sa.Column("task_group", sa.String(), nullable=True))
+    with op.batch_alter_table("tasks", schema=None) as batch_op:
+        batch_op.execute(
+            "UPDATE tasks SET task_group = method || '-' || ip_version || '-' || url"
+        )
+        batch_op.alter_column("task_group", nullable=False)
+        batch_op.create_index("similar_tasks", ["task_group"], unique=False)
+
+
+def downgrade() -> None:
+    with op.batch_alter_table("tasks", schema=None) as batch_op:
+        batch_op.drop_index("similar_tasks")
+        batch_op.drop_column("task_group")

argos/server/migrations/versions/bd4b4962696a_use_bigint_for_results_id_field.py

@@ -0,0 +1,42 @@
+"""Use bigint for results id field
+
+Revision ID: bd4b4962696a
+Revises: 31255a412d63
+Create Date: 2025-01-06 11:44:37.552965
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = "bd4b4962696a"
+down_revision: Union[str, None] = "31255a412d63"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    bind = op.get_bind()
+    if bind.engine.name != "sqlite":
+        with op.batch_alter_table("results", schema=None) as batch_op:
+            batch_op.alter_column(
+                "id",
+                existing_type=sa.INTEGER(),
+                type_=sa.BigInteger(),
+                existing_nullable=False,
+            )
+
+
+def downgrade() -> None:
+    bind = op.get_bind()
+    if bind.engine.name != "sqlite":
+        with op.batch_alter_table("results", schema=None) as batch_op:
+            batch_op.alter_column(
+                "id",
+                existing_type=sa.BigInteger(),
+                type_=sa.INTEGER(),
+                existing_nullable=False,
+            )

argos/server/migrations/versions/dcf73fa19fce_specify_check_method.py

@@ -5,6 +5,7 @@ Revises: c780864dc407
 Create Date: 2024-11-26 14:40:27.510587
 
 """
+
 from typing import Sequence, Union
 
 from alembic import op
@@ -19,11 +20,7 @@ depends_on: Union[str, Sequence[str], None] = None
 
 
 def upgrade() -> None:
-    with op.batch_alter_table("tasks", schema=None) as batch_op:
-        batch_op.add_column(
-            sa.Column(
-                "method",
-                sa.Enum(
+    enum = sa.Enum(
         "GET",
         "HEAD",
         "POST",
@@ -34,8 +31,16 @@ def upgrade() -> None:
         "PATCH",
         "DELETE",
         name="method",
-                ),
+        create_type=False,
+    )
+    enum.create(op.get_bind(), checkfirst=True)
+    with op.batch_alter_table("tasks", schema=None) as batch_op:
+        batch_op.add_column(
+            sa.Column(
+                "method",
+                enum,
                 nullable=False,
+                server_default="GET",
             )
         )
 
@@ -43,3 +48,4 @@ def upgrade() -> None:
 def downgrade() -> None:
     with op.batch_alter_table("tasks", schema=None) as batch_op:
         batch_op.drop_column("method")
+        sa.Enum(name="method").drop(op.get_bind(), checkfirst=True)

argos/server/models.py

@@ -1,6 +1,7 @@
 """Database models"""
 
 from datetime import datetime, timedelta
+from hashlib import md5
 from typing import List, Literal
 
 from sqlalchemy import (
@@ -9,16 +10,42 @@ from sqlalchemy import (
     ForeignKey,
 )
 from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column, relationship
+from sqlalchemy.schema import Index
 
 from argos.checks import BaseCheck, get_registered_check
 from argos.schemas import WebsiteCheck
-from argos.schemas.utils import Method
+from argos.schemas.utils import IPVersion, Method, Todo
+
+
+def compute_task_group(context) -> str:
+    data = context.current_parameters["request_data"]
+    if data is None:
+        data = ""
+    return (
+        f"{context.current_parameters['method']}-"
+        f"{context.current_parameters['ip_version']}-"
+        f"{context.current_parameters['url']}-"
+        f"{md5(data.encode()).hexdigest()}"
+    )
 
 
 class Base(DeclarativeBase):
     type_annotation_map = {List[WebsiteCheck]: JSON, dict: JSON}
 
 
+class Job(Base):
+    """
+    Job queue emulation
+    """
+
+    __tablename__ = "jobs"
+    id: Mapped[int] = mapped_column(primary_key=True)
+    todo: Mapped[Todo] = mapped_column(Enum("RELOAD_CONFIG", name="todo_enum"))
+    args: Mapped[str] = mapped_column()
+    current: Mapped[bool] = mapped_column(insert_default=False)
+    added_at: Mapped[datetime] = mapped_column()
+
+
 class Task(Base):
     """
     There is one task per check.
@@ -33,11 +60,16 @@ class Task(Base):
     # Info needed to run the task
     url: Mapped[str] = mapped_column()
     domain: Mapped[str] = mapped_column()
+    ip_version: Mapped[IPVersion] = mapped_column(
+        Enum("4", "6", name="ip_version_enum"),
+    )
     check: Mapped[str] = mapped_column()
     expected: Mapped[str] = mapped_column()
     frequency: Mapped[float] = mapped_column()
     recheck_delay: Mapped[float] = mapped_column(nullable=True)
     already_retried: Mapped[bool] = mapped_column(insert_default=False)
+    retry_before_notification: Mapped[int] = mapped_column(insert_default=0)
+    contiguous_failures: Mapped[int] = mapped_column(insert_default=0)
     method: Mapped[Method] = mapped_column(
         Enum(
             "GET",
@@ -53,12 +85,14 @@ class Task(Base):
         ),
         insert_default="GET",
     )
+    request_data: Mapped[str] = mapped_column(nullable=True)
 
     # Orchestration-related
     selected_by: Mapped[str] = mapped_column(nullable=True)
     selected_at: Mapped[datetime] = mapped_column(nullable=True)
     completed_at: Mapped[datetime] = mapped_column(nullable=True)
     next_run: Mapped[datetime] = mapped_column(nullable=True)
+    task_group: Mapped[str] = mapped_column(insert_default=compute_task_group)
 
     severity: Mapped[Literal["ok", "warning", "critical", "unknown"]] = mapped_column(
         Enum("ok", "warning", "critical", "unknown", name="severity"),
@@ -72,8 +106,8 @@ class Task(Base):
         passive_deletes=True,
     )
 
-    def __str__(self):
-        return f"DB Task {self.url} - {self.check} - {self.expected}"
+    def __str__(self) -> str:
+        return f"DB Task {self.url} (IPv{self.ip_version}) - {self.check} - {self.expected}"
 
     def get_check(self) -> BaseCheck:
         """Returns a check instance for this specific task"""
@@ -114,6 +148,9 @@ class Task(Base):
         return self.last_result.status
 
 
+Index("similar_tasks", Task.task_group)
+
+
 class Result(Base):
     """There are multiple results per task.
 

argos/server/queries.py

@@ -4,25 +4,27 @@ from hashlib import sha256
 from typing import List
 from urllib.parse import urljoin
 
-from sqlalchemy import asc, desc, func
+from sqlalchemy import asc, func, Select
 from sqlalchemy.orm import Session
 
 from argos import schemas
 from argos.logging import logger
-from argos.server.models import Result, Task, ConfigCache, User
+from argos.server.models import ConfigCache, Job, Result, Task, User
+from argos.server.settings import read_config
 
 
 async def list_tasks(db: Session, agent_id: str, limit: int = 100):
     """List tasks and mark them as selected"""
-    tasks = (
-        db.query(Task)
+    subquery = (
+        db.query(func.distinct(Task.task_group))
         .filter(
             Task.selected_by == None,  # noqa: E711
             ((Task.next_run <= datetime.now()) | (Task.next_run == None)),  # noqa: E711
         )
         .limit(limit)
-        .all()
+        .subquery()
     )
+    tasks = db.query(Task).filter(Task.task_group.in_(Select(subquery))).all()
 
     now = datetime.now()
     for task in tasks:
@@ -82,13 +84,22 @@ async def count_results(db: Session):
     return db.query(Result).count()
 
 
-async def has_config_changed(db: Session, config: schemas.Config) -> bool:
+async def has_config_changed(db: Session, config: schemas.Config) -> bool:  # pylint: disable-msg=too-many-statements
     """Check if websites config has changed by using a hashsum and a config cache"""
     websites_hash = sha256(str(config.websites).encode()).hexdigest()
     conf_caches = db.query(ConfigCache).all()
     same_config = True
+    keys = [
+        "websites_hash",
+        "general_frequency",
+        "general_recheck_delay",
+        "general_retry_before_notification",
+        "general_ipv4",
+        "general_ipv6",
+    ]
     if conf_caches:
         for conf in conf_caches:
+            keys.remove(conf.name)
             match conf.name:
                 case "websites_hash":
                     if conf.val != websites_hash:
@@ -105,9 +116,67 @@ async def has_config_changed(db: Session, config: schemas.Config) -> bool:
                         same_config = False
                         conf.val = str(config.general.recheck_delay)
                         conf.updated_at = datetime.now()
+                case "general_retry_before_notification":
+                    if conf.val != str(config.general.retry_before_notification):
+                        same_config = False
+                        conf.val = str(config.general.retry_before_notification)
+                        conf.updated_at = datetime.now()
+                case "general_ipv4":
+                    if conf.val != str(config.general.ipv4):
+                        same_config = False
+                        conf.val = str(config.general.ipv4)
+                        conf.updated_at = datetime.now()
+                case "general_ipv6":
+                    if conf.val != str(config.general.ipv6):
+                        same_config = False
+                        conf.val = str(config.general.ipv6)
+                        conf.updated_at = datetime.now()
+
+        for i in keys:
+            match i:
+                case "websites_hash":
+                    c = ConfigCache(
+                        name="websites_hash",
+                        val=websites_hash,
+                        updated_at=datetime.now(),
+                    )
+                case "general_frequency":
+                    c = ConfigCache(
+                        name="general_frequency",
+                        val=str(config.general.frequency),
+                        updated_at=datetime.now(),
+                    )
+                case "general_recheck_delay":
+                    c = ConfigCache(
+                        name="general_recheck_delay",
+                        val=str(config.general.recheck_delay),
+                        updated_at=datetime.now(),
+                    )
+                case "general_retry_before_notification":
+                    c = ConfigCache(
+                        name="general_retry_before_notification",
+                        val=str(config.general.retry_before_notification),
+                        updated_at=datetime.now(),
+                    )
+                case "general_ipv4":
+                    c = ConfigCache(
+                        name="general_ipv4",
+                        val=str(config.general.ipv4),
+                        updated_at=datetime.now(),
+                    )
+                case "general_ipv6":
+                    c = ConfigCache(
+                        name="general_ipv6",
+                        val=str(config.general.ipv6),
+                        updated_at=datetime.now(),
+                    )
+            db.add(c)
 
         db.commit()
 
+        if keys:
+            return True
+
         if same_config:
             return False
 
@@ -125,31 +194,98 @@ async def has_config_changed(db: Session, config: schemas.Config) -> bool:
             val=str(config.general.recheck_delay),
             updated_at=datetime.now(),
         )
+        gen_retry_before_notif = ConfigCache(
+            name="general_retry_before_notification",
+            val=str(config.general.retry_before_notification),
+            updated_at=datetime.now(),
+        )
+        gen_ipv4 = ConfigCache(
+            name="general_ipv4",
+            val=str(config.general.ipv4),
+            updated_at=datetime.now(),
+        )
+        gen_ipv6 = ConfigCache(
+            name="general_ipv6",
+            val=str(config.general.ipv6),
+            updated_at=datetime.now(),
+        )
         db.add(web_hash)
         db.add(gen_freq)
         db.add(gen_recheck)
+        db.add(gen_retry_before_notif)
+        db.add(gen_ipv4)
+        db.add(gen_ipv6)
         db.commit()
 
     return True
 
 
-async def update_from_config(db: Session, config: schemas.Config):
-    """Update tasks from config file"""
-    config_changed = await has_config_changed(db, config)
-    if not config_changed:
-        return {"added": 0, "vanished": 0}
+async def update_from_config_later(db: Session, config_file):
+    """Ask Argos to reload configuration in a recurring task"""
+    jobs = (
+        db.query(Job)
+        .filter(
+            Job.todo == "RELOAD_CONFIG",
+            Job.args == config_file,
+            Job.current == False,
+        )
+        .all()
+    )
+    if jobs:
+        return "There is already a config reloading job in the job queue, for the same file"
 
+    job = Job(todo="RELOAD_CONFIG", args=config_file, added_at=datetime.now())
+    db.add(job)
+    db.commit()
+
+    return "Config reloading has been added in the job queue"
+
+
+async def process_jobs(db: Session) -> int:
+    """Process job queue"""
+    jobs = db.query(Job).filter(Job.current == False).all()
+    if jobs:
+        for job in jobs:
+            job.current = True
+            db.commit()
+            if job.todo == "RELOAD_CONFIG":
+                logger.info("Processing job %i: %s %s", job.id, job.todo, job.args)
+                _config = read_config(job.args)
+                changed = await update_from_config(db, _config)
+                logger.info("%i task(s) added", changed["added"])
+                logger.info("%i task(s) deleted", changed["vanished"])
+                db.delete(job)
+
+        db.commit()
+        return len(jobs)
+
+    return 0
+
+
+async def update_from_config(db: Session, config: schemas.Config):  # pylint: disable-msg=too-many-branches
+    """Update tasks from config file"""
     max_task_id = (
         db.query(func.max(Task.id).label("max_id")).all()  #  pylint: disable-msg=not-callable
     )[0].max_id
     tasks = []
     unique_properties = []
     seen_tasks: List[int] = []
-    for website in config.websites:
+    for website in config.websites:  # pylint: disable-msg=too-many-nested-blocks
         domain = str(website.domain)
         frequency = website.frequency or config.general.frequency
         recheck_delay = website.recheck_delay or config.general.recheck_delay
+        retry_before_notification = (
+            website.retry_before_notification
+            if website.retry_before_notification is not None
+            else config.general.retry_before_notification
+        )
+        ipv4 = website.ipv4 if website.ipv4 is not None else config.general.ipv4
+        ipv6 = website.ipv6 if website.ipv6 is not None else config.general.ipv6
+        if ipv4 is False and ipv6 is False:
+            logger.warning("IPv4 AND IPv6 are disabled on website %s!", domain)
+            continue
 
+        for ip_version in ["4", "6"]:
             for p in website.paths:
                 url = urljoin(domain, str(p.path))
                 for check_key, expected in p.checks:
@@ -159,43 +295,72 @@ async def update_from_config(db: Session, config: schemas.Config):
                         .filter(
                             Task.url == url,
                             Task.method == p.method,
+                            Task.request_data == p.request_data,
                             Task.check == check_key,
                             Task.expected == expected,
+                            Task.ip_version == ip_version,
                         )
                         .all()
                     )
+
+                    if (ip_version == "4" and ipv4 is False) or (
+                        ip_version == "6" and ipv6 is False
+                    ):
+                        continue
+
                     if existing_tasks:
                         existing_task = existing_tasks[0]
+
                         seen_tasks.append(existing_task.id)
 
                         if frequency != existing_task.frequency:
                             existing_task.frequency = frequency
                         if recheck_delay != existing_task.recheck_delay:
                             existing_task.recheck_delay = recheck_delay  # type: ignore[assignment]
+                        if (
+                            retry_before_notification
+                            != existing_task.retry_before_notification
+                        ):
+                            existing_task.retry_before_notification = (
+                                retry_before_notification
+                            )
                         logger.debug(
                             "Skipping db task creation for url=%s, "
                             "method=%s, check_key=%s, expected=%s, "
-                        "frequency=%s, recheck_delay=%s.",
+                            "frequency=%s, recheck_delay=%s, "
+                            "retry_before_notification=%s, ip_version=%s.",
                             url,
                             p.method,
                             check_key,
                             expected,
                             frequency,
                             recheck_delay,
+                            retry_before_notification,
+                            ip_version,
                         )
 
                     else:
-                    properties = (url, check_key, expected)
+                        properties = (
+                            url,
+                            p.method,
+                            check_key,
+                            expected,
+                            ip_version,
+                            p.request_data,
+                        )
                         if properties not in unique_properties:
                             unique_properties.append(properties)
                             task = Task(
                                 domain=domain,
                                 url=url,
+                                ip_version=ip_version,
                                 method=p.method,
+                                request_data=p.request_data,
                                 check=check_key,
                                 expected=expected,
                                 frequency=frequency,
                                 recheck_delay=recheck_delay,
+                                retry_before_notification=retry_before_notification,
                                 already_retried=False,
                             )
                             logger.debug("Adding a new task in the db: %s", task)
@@ -213,7 +378,8 @@ async def update_from_config(db: Session, config: schemas.Config):
         )
         db.commit()
         logger.info(
-            "%i tasks has been removed since not in config file anymore", vanished_tasks
+            "%i task(s) has been removed since not in config file anymore",
+            vanished_tasks,
         )
         return {"added": len(tasks), "vanished": vanished_tasks}
 
@@ -243,26 +409,11 @@ async def reschedule_all(db: Session):
     db.commit()
 
 
-async def remove_old_results(db: Session, max_results: int):
-    tasks = db.query(Task).all()
-    deleted = 0
-    for task in tasks:
-        # Get the id of the oldest result to keep
-        subquery = (
-            db.query(Result.id)
-            .filter(Result.task_id == task.id)
-            .order_by(desc(Result.id))
-            .limit(max_results)
-            .subquery()
-        )
-        min_id = db.query(func.min(subquery.c.id)).scalar()  #  pylint: disable-msg=not-callable
-
-        # Delete all the results older than min_id
-        if min_id:
-            deleted += (
-                db.query(Result)
-                .where(Result.id < min_id, Result.task_id == task.id)
-                .delete()
+async def remove_old_results(db: Session, max_results_age: float):
+    """Remove old results, base on age"""
+    max_acceptable_time = datetime.now() - timedelta(seconds=max_results_age)
+    deleted = (
+        db.query(Result).filter(Result.submitted_at < max_acceptable_time).delete()
     )
     db.commit()
 

argos/server/routes/api.py

@@ -7,7 +7,7 @@ from sqlalchemy.orm import Session
 from argos.logging import logger
 from argos.schemas import AgentResult, Config, Task
 from argos.server import queries
-from argos.server.alerting import handle_alert
+from argos.server.alerting import handle_alert, need_alert
 from argos.server.routes.dependencies import get_config, get_db, verify_token
 
 route = APIRouter()
@@ -58,16 +58,26 @@ async def create_results(  # pylint: disable-msg=too-many-positional-arguments
             logger.error("Unable to find task %i", agent_result.task_id)
         else:
             last_severity = task.severity
+            last_severity_update = task.last_severity_update
             result = await queries.create_result(db, agent_result, agent_id)
             check = task.get_check()
             status, severity = await check.finalize(config, result, **result.context)
             result.set_status(status, severity)
             task.set_times_severity_and_deselect(severity, result.submitted_at)
 
-            # Don’t create an alert if the severity has not changed
-            if last_severity != severity:
+            send_notif = need_alert(
+                last_severity, last_severity_update, severity, status, task
+            )
+
+            if send_notif:
                 background_tasks.add_task(
-                    handle_alert, config, result, task, severity, last_severity, request
+                    handle_alert,
+                    config,
+                    result,
+                    task,
+                    severity,
+                    last_severity,
+                    request,
                 )
 
             db_results.append(result)

argos/server/routes/dependencies.py

@@ -2,6 +2,8 @@ from fastapi import Depends, HTTPException, Request
 from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
 from fastapi_login import LoginManager
 
+from argos.logging import logger
+
 auth_scheme = HTTPBearer()
 
 
@@ -33,12 +35,19 @@ async def verify_token(
     return token
 
 
-async def find_ldap_user(config, ldap, user: str) -> str | None:
+async def find_ldap_user(config, ldapobj, user: str) -> str | None:
     """Do a LDAP search for user and return its dn"""
+    import ldap
     import ldap.filter as ldap_filter
     from ldapurl import LDAP_SCOPE_SUBTREE
 
-    result = ldap.search_s(
+    try:
+        ldapobj.simple_bind_s(config.general.ldap.bind_dn, config.general.ldap.bind_pwd)
+    except ldap.LDAPError as err:  # pylint: disable-msg=no-member
+        logger.error("LDAP error: %s", err)
+        return None
+
+    result = ldapobj.search_s(
         config.general.ldap.user_tree,
         LDAP_SCOPE_SUBTREE,
         filterstr=ldap_filter.filter_format(

argos/server/routes/views.py

@@ -90,6 +90,15 @@ async def post_login(
         from ldap import INVALID_CREDENTIALS  # pylint: disable-msg=no-name-in-module
         from argos.server.routes.dependencies import find_ldap_user
 
+        invalid_credentials = templates.TemplateResponse(
+            "login.html",
+            {
+                "request": request,
+                "msg": "Sorry, invalid username or bad password. "
+                "Or the LDAP server is unreachable (see logs to verify).",
+            },
+        )
+
         ldap_dn = await find_ldap_user(config, request.app.state.ldap, username)
         if ldap_dn is None:
             return invalid_credentials
@@ -357,8 +366,21 @@ async def set_refresh_cookies_view(
         request.url_for("get_severity_counts_view"),
         status_code=status.HTTP_303_SEE_OTHER,
     )
-    response.set_cookie(key="auto_refresh_enabled", value=str(auto_refresh_enabled))
+    # Cookies’ age in Chrome can’t be more than 400 days
+    # https://developer.chrome.com/blog/cookie-max-age-expires
+    delta = int(timedelta(days=400).total_seconds())
     response.set_cookie(
-        key="auto_refresh_seconds", value=str(max(5, int(auto_refresh_seconds)))
+        key="auto_refresh_enabled",
+        value=str(auto_refresh_enabled),
+        httponly=True,
+        samesite="strict",
+        expires=delta,
+    )
+    response.set_cookie(
+        key="auto_refresh_seconds",
+        value=str(max(5, int(auto_refresh_seconds))),
+        httponly=True,
+        samesite="strict",
+        expires=delta,
     )
     return response

argos/server/settings.py

@@ -1,12 +1,26 @@
 """Pydantic schemas for server"""
+import sys
 from pathlib import Path
 
 import yaml
 from yamlinclude import YamlIncludeConstructor
+from pydantic import ValidationError
 
+from argos.logging import logger
 from argos.schemas.config import Config
 
 
+def read_config(yaml_file):
+    try:
+        config = read_yaml_config(yaml_file)
+        return config
+    except ValidationError as err:
+        logger.error("Errors where found while reading configuration:")
+        for error in err.errors():
+            logger.error("%s is %s", error["loc"], error["type"])
+        sys.exit(1)
+
+
 def read_yaml_config(filename: str) -> Config:
     parsed = _load_yaml(filename)
     return Config(**parsed)

argos/server/templates/domain.html

@@ -16,7 +16,7 @@
         <tbody id="domains-body">
             {% for task in tasks %}
             <tr scope="row">
-                <td>{{ task.url }}</td>
+                <td>{{ task.url }} (IPv{{ task.ip_version }})</td>
                 <td>{{ task.check }}</td>
                 <td class="status highlight">
                     {% if task.status %}

argos/server/templates/domains.html

@@ -71,7 +71,7 @@
         </table>
     </div>
     <script>
-        function filterDomains(e) {
+        function filterDomains() {
             let status = document.getElementById('select-status');
             let filter = document.getElementById('domain-search').value;
             console.log(filter)
@@ -111,13 +111,7 @@
         }
         document.getElementById('select-status').addEventListener('change', filterDomains);
         document.getElementById('domain-search').addEventListener('input', filterDomains);
-        document.querySelectorAll('[data-status]').forEach((item) => {
-            if (item.dataset.status !== 'ok') {
-                item.style.display = null;
-            } else {
-                item.style.display = 'none';
-            }
-        })
+        filterDomains()
         document.getElementById('js-only').style.display = null;
     </script>
 {% endblock content %}

docs/checks.md

@@ -82,6 +82,48 @@ caption: argos-config.yaml
         - json-is: '{"foo": "bar", "baz": 42}'
 ```
 
+## Add data to requests
+
+If you want to specify query parameters, just put them in the path:
+
+```{code-block} yaml
+websites:
+  - domain: "https://contact.example.org"
+    paths:
+      - path: "/index.php?action=show_messages"
+        method: "GET"
+```
+
+If you want, for example, to test a form and send some data to it:
+
+```{code-block} yaml
+websites:
+  - domain: "https://contact.example.org"
+    paths:
+      - path: "/"
+        method: "POST"
+        request_data:
+          # These are the data sent to the server: title and msg
+          data:
+            title: "Hello my friend"
+            msg: "How are you today?"
+          # To send data as JSON (optional, default is false):
+          is_json: true
+```
+
+If you need to send some headers in the request:
+
+```{code-block} yaml
+websites:
+  - domain: "https://contact.example.org"
+    paths:
+      - path: "/api/mail"
+        method: "PUT"
+        request_data:
+          headers:
+            Authorization: "Bearer foo-bar-baz"
+```
+
 ## SSL certificate expiration
 
  Checks that the SSL certificate will not expire soon. You need to define the thresholds in the configuration, and set the `on-check` option to enable the check.

docs/cli.md

@@ -60,7 +60,9 @@ Options:
   --max-tasks INTEGER             Number of concurrent tasks this agent can run
   --wait-time INTEGER             Waiting time between two polls on the server
                                   (seconds)
-  --log-level [DEBUG|INFO|WARNING|ERROR|CRITICAL]
+  --log-level [debug|info|warning|error|critical]
+  --user-agent TEXT               A custom string to append to the User-Agent
+                                  header
   --help                          Show this message and exit.
 ```
 
@@ -82,7 +84,6 @@ Options:
   --help  Show this message and exit.
 
 Commands:
-  cleandb          Clean the database (to run routinely)
   generate-config  Output a self-documented example config file.
   generate-token   Generate a token for agents
   migrate          Run database migrations
@@ -93,7 +94,6 @@ Commands:
   test-gotify      Send a test gotify notification
   test-mail        Send a test email
   user             User management
-  watch-agents     Watch agents (to run routinely)
 ```
 
 <!--[[[end]]]
@@ -150,65 +150,6 @@ Options:
 -->
 
 
-### Server cleandb
-<!--
-.. [[[cog
-    help(["server", "cleandb", "--help"])
-.. ]]] -->
-
-```man
-Usage: argos server cleandb [OPTIONS]
-
-  Clean the database (to run routinely)
-
-  - Removes old results from the database.
-  - Removes locks from tasks that have been locked for too long.
-
-Options:
-  --max-results INTEGER       Number of results per task to keep
-  --max-lock-seconds INTEGER  The number of seconds after which a lock is
-                              considered stale, must be higher than 60 (the
-                              checks have a timeout value of 60 seconds)
-  --config TEXT               Path of the configuration file. If ARGOS_YAML_FILE
-                              environment variable is set, its value will be
-                              used instead. Default value: argos-config.yaml and
-                              /etc/argos/config.yaml as fallback.
-  --help                      Show this message and exit.
-```
-
-<!--[[[end]]]
--->
-
-### Server watch-agents
-
-<!--
-.. [[[cog
-    help(["server", "cleandb", "--help"])
-.. ]]] -->
-
-```man
-Usage: argos server cleandb [OPTIONS]
-
-  Clean the database (to run routinely)
-
-  - Removes old results from the database.
-  - Removes locks from tasks that have been locked for too long.
-
-Options:
-  --max-results INTEGER       Number of results per task to keep
-  --max-lock-seconds INTEGER  The number of seconds after which a lock is
-                              considered stale, must be higher than 60 (the
-                              checks have a timeout value of 60 seconds)
-  --config TEXT               Path of the configuration file. If ARGOS_YAML_FILE
-                              environment variable is set, its value will be
-                              used instead. Default value: argos-config.yaml and
-                              /etc/argos/config.yaml as fallback.
-  --help                      Show this message and exit.
-```
-
-<!--[[[end]]]
--->
-
 ### Server reload-config
 
 <!--
@@ -222,9 +163,14 @@ Usage: argos server reload-config [OPTIONS]
   Read tasks’ configuration and add/delete tasks in database if needed
 
 Options:
-  --config TEXT  Path of the configuration file. If ARGOS_YAML_FILE environment
-                 variable is set, its value will be used instead. Default value:
-                 argos-config.yaml and /etc/argos/config.yaml as fallback.
+  --config TEXT             Path of the configuration file. If ARGOS_YAML_FILE
+                            environment variable is set, its value will be used
+                            instead. Default value: argos-config.yaml and
+                            /etc/argos/config.yaml as fallback.
+  --enqueue / --no-enqueue  Let Argos main recurring tasks handle
+                            configuration’s loading. It may delay the
+                            application of the new configuration up to 2
+                            minutes. Default is --no-enqueue
   --help                    Show this message and exit.
 ```
 

docs/developer/dependencies.md

@@ -14,7 +14,9 @@ description: Many thanks to their developers!
 - [Alembic](https://alembic.sqlalchemy.org) is used for DB migrations;
 - [Tenacity](https://github.com/jd/tenacity) a small utility to retry a function in case an error occured;
 - [Uvicorn](https://www.uvicorn.org/) is the tool used to run our server;
-- [Gunicorn](https://gunicorn.org/) is the recommended WSGI HTTP server for production.
+- [Gunicorn](https://gunicorn.org/) is the recommended WSGI HTTP server for production;
+- [Apprise](https://github.com/caronc/apprise/wiki) allows Argos to send notifications through a lot of channels;
+- [FastAPI Utilities](https://fastapiutils.github.io/fastapi-utils/) is in charge of recurring tasks.
 
 ## CSS framework
 

docs/developer/migrations.md

@@ -15,3 +15,7 @@ venv/bin/alembic -c argos/server/migrations/alembic.ini revision \
 ```
 
 Edit the created file to remove comments and adapt it to make sure the migration is complete (Alembic is not powerful enough to cover all the corner cases).
+
+In case you want to add an `Enum` type and use it in an existing table, please have a look at [`argos/server/migrations/versions/dcf73fa19fce_specify_check_method.py`](https://framagit.org/framasoft/framaspace/argos/-/blob/main/argos/server/migrations/versions/dcf73fa19fce_specify_check_method.py).
+
+If you want to add an `Enum` type in a new table, you can do like in [`argos/server/migrations/versions/7d480e6f1112_initial_migrations.py`](https://framagit.org/framasoft/framaspace/argos/-/blob/main/argos/server/migrations/versions/7d480e6f1112_initial_migrations.py)

docs/developer/release.md

@@ -41,7 +41,8 @@ git add argos/__init__.py CHANGELOG.md
 git commit -m "🏷 — Bump version ($(hatch version))"
 
 # Create a tag on the git repository and push it
-git tag "$(hatch version)" && git push
+git tag "$(hatch version)" -m "$(hatch version)" &&
+  git push --follow-tags
 
 # Build the project
 hatch build --clean

docs/installation/getting-started.md

@@ -191,18 +191,6 @@ The only requirement is that the agent can reach the server through HTTP or HTTP
 argos agent http://localhost:8000 "auth-token"
 ```
 
-## Cleaning the database
-
-You have to run cleaning task periodically. `argos server cleandb --help` will give you more information on how to do that.
-
-Here is a crontab example, which will clean the db each hour:
-
-```bash
-# Run the cleaning tasks every hour (at minute 7)
-# Keeps 10 results per task, and remove tasks’ locks older than 1 hour
-7 * * * * argos server cleandb --max-results 10 --max-lock-seconds 3600
-```
-
 ## Watch the agents
 
 In order to be sure that agents are up and communicate with the server, you can periodically run the `argos server watch-agents` command.

docs/installation/tl-dr.md

@@ -90,13 +90,13 @@ User=argos
 WorkingDirectory=/opt/argos/
 EnvironmentFile=/etc/default/argos-server
 ExecStartPre=/opt/argos/venv/bin/argos server migrate
-ExecStartPre=/opt/argos/venv/bin/argos server reload-config
+ExecStartPre=/opt/argos/venv/bin/argos server reload-config --enqueue
 ExecStart=/opt/argos/venv/bin/gunicorn "argos.server.main:get_application()" \\
                                        --workers \$ARGOS_SERVER_WORKERS \\
                                        --worker-class uvicorn.workers.UvicornWorker \\
                                        --bind \$ARGOS_SERVER_SOCKET \\
                                        --forwarded-allow-ips \$ARGOS_SERVER_FORWARDED_ALLOW_IPS
-ExecReload=/opt/argos/venv/bin/argos server reload-config
+ExecReload=/opt/argos/venv/bin/argos server reload-config --enqueue
 SyslogIdentifier=argos-server
 
 [Install]
@@ -153,8 +153,7 @@ If all works well, you have to put some cron tasks in `argos` crontab:
 
 ```bash
 cat <<EOF | crontab -u argos -
-*/10 * * * * /opt/argos/venv/bin/argos server cleandb --max-lock-seconds 120 --max-results 1200
-*/10 * * * * /opt/argos/venv/bin/argos server watch-agents --time-without-agent 10
+*/10 * * * * /opt/argos/venv/bin/argos server watch-agents --time-without-agent 10:
 EOF
 ```
 

pyproject.toml

@@ -28,10 +28,12 @@ dependencies = [
   "durations-nlp>=1.0.1,<2",
   "fastapi>=0.103,<0.104",
   "fastapi-login>=1.10.0,<2",
-  "httpx>=0.27.2,<1",
+  "fastapi-utils>=0.8.0,<0.9",
+  "httpx>=0.27.2,<0.28.0",
   "Jinja2>=3.0,<4",
   "jsonpointer>=3.0,<4",
   "passlib>=1.7.4,<2",
+  "psutil>=5.9.8,<6",
   "psycopg2-binary>=2.9,<3",
   "pydantic[email]>=2.4,<3",
   "pydantic-settings>=2.0,<3",
@@ -41,6 +43,7 @@ dependencies = [
   "sqlalchemy[asyncio]>=2.0,<3",
   "sqlalchemy-utils>=0.41,<1",
   "tenacity>=8.2,<9",
+  "typing_inspect>=0.9.0,<1",
   "uvicorn>=0.23,<1",
 ]
 
@@ -48,7 +51,7 @@ dependencies = [
 dev = [
   "black==23.3.0",
   "djlint>=1.34.0",
-  "hatch==1.9.4",
+  "hatch==1.13.0",
   "ipdb>=0.13,<0.14",
   "ipython>=8.16,<9",
   "isort==5.11.5",

tests/config.yaml

@@ -1,9 +1,21 @@
+---
 general:
+  # Except for frequency and recheck_delay settings, changes in general
+  # section of the configuration will need a restart of argos server.
   db:
-    # The database URL, as defined in SQLAlchemy docs : https://docs.sqlalchemy.org/en/20/core/engines.html#database-urls
+    # The database URL, as defined in SQLAlchemy docs:
+    # https://docs.sqlalchemy.org/en/20/core/engines.html#database-urls
     url: "sqlite:////tmp/test-argos.db"
+  # Can be "production", "dev", "test".
+  # If not present, default value is "production"
   env: test
+  # To get a good string for cookie_secret, run:
+  # openssl rand -hex 32
   cookie_secret: "foo-bar-baz"
+
+  # Default delay for checks.
+  # Can be superseeded in domain configuration.
+  # For ex., to run checks every 5 minutes:
   frequency: "1m"
   alerts:
     ok:
@@ -14,12 +26,37 @@ general:
       - local
     unknown:
       - local
+    no_agent:
+      - local
 service:
   secrets:
+    # Secrets can be generated using `argos server generate-token`.
+    # You need at least one. Write them as a list, like:
+    # - secret_token
     - "O4kt8Max9/k0EmHaEJ0CGGYbBNFmK8kOZNIoUk3Kjwc"
     - "x1T1VZR51pxrv5pQUyzooMG4pMUvHNMhA5y/3cUsYVs="
 ssl:
   thresholds:
     - "1d": critical
-      "5d": warning
+    - "5d": warning
+
+# Argos will execute some tasks in the background for you
+# every 2 minutes and needs some configuration for that
+recurring_tasks:
+  # Maximum age of results
+  # Use m for minutes, h for hours, d for days
+  # w for weeks, M for months, y for years
+  # See https://github.com/timwedde/durations_nlp#scales-reference for details
+  max_results_age: "1d"
+  # Max number of seconds a task can be locked
+  # Minimum value is 61, default is 100
+  max_lock_seconds: 100
+  # Max number of seconds without seing an agent
+  # before sending an alert
+  # Minimum value is 61, default is 300
+  time_without_agent: 300
+
+# It's also possible to define the checks in another file
+# with the include syntax:
+#
 websites: !include websites.yaml

tests/test_api.py

@@ -21,7 +21,7 @@ def test_tasks_retrieval_and_results(authorized_client, app):
         assert response.status_code == 200
 
         tasks = response.json()
-        assert len(tasks) == 2
+        assert len(tasks) == 4
 
         results = []
         for task in tasks:
@@ -33,7 +33,7 @@ def test_tasks_retrieval_and_results(authorized_client, app):
         response = client.post("/api/results", json=data)
 
         assert response.status_code == 201
-        assert app.state.db.query(models.Result).count() == 2
+        assert app.state.db.query(models.Result).count() == 4
 
         # The list of tasks should be empty now
         response = client.get("/api/tasks")
@@ -60,6 +60,8 @@ def ssl_task(db):
     task = models.Task(
         url="https://exemple.com/",
         domain="https://exemple.com/",
+        ip_version="6",
+        method="GET",
         check="ssl-certificate-expiration",
         expected="on-check",
         frequency=1,

tests/test_checks.py

@@ -35,8 +35,13 @@ def ssl_task(now):
         id=1,
         url="https://example.org",
         domain="https://example.org",
+        ip_version="6",
         method="GET",
+        request_data=None,
+        task_group="GET-6-https://example.org",
         check="ssl-certificate-expiration",
+        retry_before_notification=0,
+        contiguous_failures=0,
         expected="on-check",
         selected_at=now,
         selected_by="pytest",

tests/test_queries.py

@@ -10,9 +10,9 @@ from argos.server.models import Result, Task, User
 @pytest.mark.asyncio
 async def test_remove_old_results(db, ten_tasks):  #  pylint: disable-msg=redefined-outer-name
     for _task in ten_tasks:
-        for _ in range(5):
+        for iterator in range(5):
             result = Result(
-                submitted_at=datetime.now(),
+                submitted_at=datetime.now() - timedelta(seconds=iterator * 2),
                 status="success",
                 context={"foo": "bar"},
                 task=_task,
@@ -24,12 +24,12 @@ async def test_remove_old_results(db, ten_tasks):  #  pylint: disable-msg=redefi
 
     # So we have 5 results per tasks
     assert db.query(Result).count() == 50
-    # Keep only 2
-    deleted = await queries.remove_old_results(db, 2)
-    assert deleted == 30
-    assert db.query(Result).count() == 20
+    # Keep only those newer than 1 second ago
+    deleted = await queries.remove_old_results(db, 6)
+    assert deleted == 20
+    assert db.query(Result).count() == 30
     for _task in ten_tasks:
-        assert db.query(Result).filter(Result.task == _task).count() == 2
+        assert db.query(Result).filter(Result.task == _task).count() == 3
 
 
 @pytest.mark.asyncio
@@ -70,7 +70,7 @@ async def test_update_from_config_with_duplicate_tasks(db, empty_config):  #  py
     await queries.update_from_config(db, empty_config)
 
     # Only one path has been saved in the database
-    assert db.query(Task).count() == 1
+    assert db.query(Task).count() == 2
 
     # Calling again with the same data works, and will not result in more tasks being
     # created.
@@ -87,6 +87,7 @@ async def test_update_from_config_db_can_remove_duplicates_and_old_tasks(
     same_task = Task(
         url=task.url,
         domain=task.domain,
+        ip_version="6",
         check=task.check,
         expected=task.expected,
         frequency=task.frequency,
@@ -108,7 +109,7 @@ async def test_update_from_config_db_can_remove_duplicates_and_old_tasks(
     empty_config.websites = [website]
 
     await queries.update_from_config(db, empty_config)
-    assert db.query(Task).count() == 2
+    assert db.query(Task).count() == 4
 
     website = schemas.config.Website(
         domain=task.domain,
@@ -122,7 +123,7 @@ async def test_update_from_config_db_can_remove_duplicates_and_old_tasks(
     empty_config.websites = [website]
 
     await queries.update_from_config(db, empty_config)
-    assert db.query(Task).count() == 1
+    assert db.query(Task).count() == 2
 
 
 @pytest.mark.asyncio
@@ -136,7 +137,7 @@ async def test_update_from_config_db_updates_existing_tasks(db, empty_config, ta
     empty_config.websites = [website]
 
     await queries.update_from_config(db, empty_config)
-    assert db.query(Task).count() == 1
+    assert db.query(Task).count() == 2
 
 
 @pytest.mark.asyncio
@@ -212,6 +213,7 @@ def task(db):
     _task = Task(
         url="https://www.example.com",
         domain="https://www.example.com",
+        ip_version="6",
         check="body-contains",
         expected="foo",
         frequency=1,
@@ -233,6 +235,7 @@ def empty_config():
                 warning=["", ""],
                 critical=["", ""],
                 unknown=["", ""],
+                no_agent=["", ""],
             ),
         ),
         service=schemas.config.Service(
@@ -241,6 +244,11 @@ def empty_config():
             ]
         ),
         ssl=schemas.config.SSL(thresholds=[]),
+        recurring_tasks=schemas.config.RecurringTasks(
+            max_results_age="6s",
+            max_lock_seconds=120,
+            time_without_agent=300,
+        ),
         websites=[],
     )
 
@@ -271,6 +279,7 @@ def ten_locked_tasks(db):
         _task = Task(
             url="https://www.example.com",
             domain="example.com",
+            ip_version="6",
             check="body-contains",
             expected="foo",
             frequency=1,
@@ -291,6 +300,7 @@ def ten_tasks(db):
         _task = Task(
             url="https://www.example.com",
             domain="example.com",
+            ip_version="6",
             check="body-contains",
             expected="foo",
             frequency=1,
@@ -311,6 +321,7 @@ def ten_warning_tasks(db):
         _task = Task(
             url="https://www.example.com",
             domain="example.com",
+            ip_version="6",
             check="body-contains",
             expected="foo",
             frequency=1,
@@ -331,6 +342,7 @@ def ten_critical_tasks(db):
         _task = Task(
             url="https://www.example.com",
             domain="example.com",
+            ip_version="6",
             check="body-contains",
             expected="foo",
             frequency=1,
@@ -351,6 +363,7 @@ def ten_ok_tasks(db):
         _task = Task(
             url="https://www.example.com",
             domain="example.com",
+            ip_version="6",
             check="body-contains",
             expected="foo",
             frequency=1,

tests/websites.yaml

@@ -1,3 +1,4 @@
+---
 - domain: "https://mypads.framapad.org"
   paths:
     - path: "/mypads/"