This 'args' things sounds like a big YAGNI after all

data/actionsmap/yunohost.yml

@@ -1898,9 +1898,6 @@ diagnosis:
                 --force:
                     help: Ignore the cached report even if it is still 'fresh'
                     action: store_true
-                -a:
-                    help: Serialized arguments for diagnosis scripts (e.g. "domain=domain.tld")
-                    full: --args
 
         ignore:
             action_help: Configure some diagnosis results to be ignored

data/hooks/diagnosis/10-ip.py

@@ -15,18 +15,11 @@ class IPDiagnoser(Diagnoser):
     id_ = os.path.splitext(os.path.basename(__file__))[0].split("-")[1]
     cache_duration = 60
 
-    def validate_args(self, args):
-        if "version" not in args.keys():
-            return {"versions": [4, 6]}
-        else:
-            assert str(args["version"]) in ["4", "6"], "Invalid version, should be 4 or 6."
-            return {"versions": [int(args["version"])]}
-
     def run(self):
 
-        versions = self.args["versions"]
+        #
-
+        # IPv4 Diagnosis
-        if 4 in versions:
+        #
 
         # If we can't ping, there's not much else we can do
         if not self.can_ping_outside(4):
@@ -67,7 +60,9 @@ class IPDiagnoser(Diagnoser):
                    summary=("diagnosis_ip_connected_ipv4", {}) if ipv4
                       else ("diagnosis_ip_no_ipv4", {}))
 
-        if 6 in versions:
+        #
+        # IPv6 Diagnosis
+        #
 
         if not self.can_ping_outside(4):
             ipv6 = None

data/hooks/diagnosis/12-dnsrecords.py

@@ -14,14 +14,6 @@ class DNSRecordsDiagnoser(Diagnoser):
     id_ = os.path.splitext(os.path.basename(__file__))[0].split("-")[1]
     cache_duration = 3600 * 24
 
-    def validate_args(self, args):
-        all_domains = domain_list()["domains"]
-        if "domain" not in args.keys():
-            return {"domains": all_domains}
-        else:
-            assert args["domain"] in all_domains, "Unknown domain"
-            return {"domains": [args["domain"]]}
-
     def run(self):
 
         resolvers = read_file("/etc/resolv.dnsmasq.conf").split("\n")
@@ -32,7 +24,8 @@ class DNSRecordsDiagnoser(Diagnoser):
         self.resolver = ipv4_resolvers[0]
         main_domain = _get_maindomain()
 
-        for domain in self.args["domains"]:
+        all_domains = domain_list()["domains"]
+        for domain in all_domains:
             self.logger_debug("Diagnosing DNS conf for %s" % domain)
             for report in self.check_domain(domain, domain == main_domain):
                 yield report

data/hooks/diagnosis/30-services.py

@@ -21,10 +21,6 @@ class ServicesDiagnoser(Diagnoser):
     id_ = os.path.splitext(os.path.basename(__file__))[0].split("-")[1]
     cache_duration = 300
 
-    def validate_args(self, args):
-        # TODO / FIXME Ugh do we really need this arg system
-        return {}
-
     def run(self):
 
         all_result = service_status()

data/hooks/diagnosis/50-diskusage.py

@@ -9,10 +9,6 @@ class DiskUsageDiagnoser(Diagnoser):
     id_ = os.path.splitext(os.path.basename(__file__))[0].split("-")[1]
     cache_duration = 3600 * 24
 
-    def validate_args(self, args):
-        # TODO / FIXME Ugh do we really need this arg system
-        return {}
-
     def run(self):
 
         disk_partitions = psutil.disk_partitions()

src/yunohost/diagnosis.py

@@ -84,7 +84,7 @@ def diagnosis_show(categories=[], issues=False, full=False):
     return {"reports": all_reports}
 
 
-def diagnosis_run(categories=[], force=False, args=None):
+def diagnosis_run(categories=[], force=False):
 
     # Get all the categories
     all_categories = _list_diagnosis_categories()
@@ -98,13 +98,6 @@ def diagnosis_run(categories=[], force=False, args=None):
         if unknown_categories:
             raise YunohostError('unknown_categories', categories=", ".join(unknown_categories))
 
-    # Transform "arg1=val1&arg2=val2" to { "arg1": "val1", "arg2": "val2" }
-    if args is not None:
-        args = {arg.split("=")[0]: arg.split("=")[1] for arg in args.split("&")}
-    else:
-        args = {}
-    args["force"] = force
-
     issues = []
     # Call the hook ...
     diagnosed_categories = []
@@ -113,7 +106,7 @@ def diagnosis_run(categories=[], force=False, args=None):
         path = [p for n, p in all_categories if n == category][0]
 
         try:
-            code, report = hook_exec(path, args=args, env=None)
+            code, report = hook_exec(path, args={"force": force}, env=None)
         except Exception as e:
             logger.error("Diagnosis failed for category '%s' : %s" % (category, str(e)), exc_info=True)  # FIXME : i18n
         else:
@@ -143,7 +136,6 @@ class Diagnoser():
         self.logger_debug, self.logger_warning, self.logger_info = loggers
         self.env = env
         self.args = args or {}
-        self.args.update(self.validate_args(self.args))
         self.cache_file = Diagnoser.cache_file(self.id_)
 
         descr_key = "diagnosis_description_" + self.id_