admin: allow disabling display of metrics

This is useful in situations where the admins of the Snikket
server (i.e. those who care for the docker containers) are not the
same people as the people who are admins of the Snikket service
(i.e. those who care for the users).

snikket_web/__init__.py

@@ -160,6 +160,7 @@ class AppConfig:
     # Future versions may change this default, and the standard deployment
     # tools may also very well override it.
     max_avatar_size = environ.var(1024*1024, converter=int)
+    show_metrics = environ.bool_var(True)
 
 
 _UPPER_CASE = "".join(map(chr, range(ord("A"), ord("Z")+1)))
@@ -191,6 +192,7 @@ def create_app() -> quart.Quart:
     app.config["AVATAR_CACHE_TTL"] = config.avatar_cache_ttl
     app.config["APPLE_STORE_URL"] = config.apple_store_url
     app.config["MAX_AVATAR_SIZE"] = config.max_avatar_size
+    app.config["SHOW_METRICS"] = config.show_metrics
 
     app.context_processor(proc)
     app.register_error_handler(

snikket_web/admin.py

@@ -20,6 +20,7 @@ from quart import (
     request,
     abort,
     flash,
+    current_app,
 )
 
 from flask_babel import lazy_gettext as _l, _
@@ -33,7 +34,11 @@ bp = Blueprint("admin", __name__, url_prefix="/admin")
 @bp.route("/")
 @client.require_admin_session()
 async def index() -> str:
-    return await render_template("admin_home.html")
+    show_metrics = current_app.config["SHOW_METRICS"]
+    return await render_template(
+        "admin_home.html",
+        show_metrics=show_metrics,
+    )
 
 
 class PasswordResetLinkPost(BaseForm):
@@ -575,7 +580,9 @@ def get_system_stats() -> typing.MutableMapping[
         (time.monotonic() - _MONOTONIC_EPOCH)
     )
 
+    mem_total, mem_available = None, None
     load5: typing.Optional[float] = None
+
     try:
         with open("/proc/loadavg") as f:
             stats = f.read().split()
@@ -583,7 +590,6 @@ def get_system_stats() -> typing.MutableMapping[
     except (ValueError, IndexError, TypeError, OSError):
         pass
 
-    mem_total, mem_available = None, None
     try:
         with open("/proc/meminfo") as f:
             for line in f:
@@ -650,37 +656,43 @@ async def system() -> typing.Union[str, quart.Response]:
             # redirect only if not previewing
             return redirect(url_for(".system"))
 
-    version = await client.get_server_version()
+    version = None
-    now = time.time()
+    now = None
-    try:
+    show_metrics = current_app.config["SHOW_METRICS"]
-        prosody_metrics = await client.get_system_metrics()
+    if show_metrics:
-    except quart.exceptions.NotFound:
+        version = await client.get_server_version()
-        # server does not offer the endpoint for whatever reason -- ignore
+        now = time.time()
-        prosody_metrics = {}
+        try:
+            prosody_metrics = await client.get_system_metrics()
+        except quart.exceptions.NotFound:
+            # server does not offer the endpoint for whatever reason -- ignore
+            prosody_metrics = {}
 
-    metrics = get_system_stats()
+        metrics = get_system_stats()
-    try:
+        try:
-        prosody_cpu_metrics = prosody_metrics["cpu"]
+            prosody_cpu_metrics = prosody_metrics["cpu"]
-    except KeyError:
+        except KeyError:
-        pass
+            pass
+        else:
+            metrics["prosody_cpu"] = (prosody_cpu_metrics["value"] /
+                                      (now - prosody_cpu_metrics["since"]))
+
+        try:
+            metrics["prosody_rss"] = prosody_metrics["memory"]
+        except KeyError:
+            pass
+
+        try:
+            metrics["prosody_devices"] = prosody_metrics["c2s"]
+        except KeyError:
+            pass
+
+        for k in list(metrics.keys()):
+            if metrics[k] is None:
+                # so that defaulting in jinja works
+                del metrics[k]
     else:
-        metrics["prosody_cpu"] = (prosody_cpu_metrics["value"] /
+        metrics = {}
-                                  (now - prosody_cpu_metrics["since"]))
-
-    try:
-        metrics["prosody_rss"] = prosody_metrics["memory"]
-    except KeyError:
-        pass
-
-    try:
-        metrics["prosody_devices"] = prosody_metrics["c2s"]
-    except KeyError:
-        pass
-
-    for k in list(metrics.keys()):
-        if metrics[k] is None:
-            # so that defaulting in jinja works
-            del metrics[k]
 
     return await render_template(
         "admin_system.html",
@@ -688,4 +700,5 @@ async def system() -> typing.Union[str, quart.Response]:
         version=_version.version,
         prosody_version=version,
         form=form,
+        show_metrics=show_metrics,
     )

snikket_web/templates/admin_home.html

@@ -34,7 +34,11 @@
 		<li>
 			<h2>{% trans %}System health{% endtrans %}</h2>
 			{#- -#}
+			{%- if show_metrics -%}
 			<p>{% trans %}View the server status or send a broadcast message to all users.{% endtrans %}</p>
+			{%- else -%}
+			<p>{% trans %}Send a broadcast message to all users.{% endtrans %}</p>
+			{%- endif -%}
 			{#- -#}
 			<div>{% call standard_button("insights", url_for(".system"), class="primary") %}{% trans %}Manage system{% endtrans %}{% endcall %}</div>
 			{#- -#}

snikket_web/templates/admin_system.html

@@ -2,6 +2,7 @@
 {% from "library.j2" import form_button %}
 {% block content %}
 <h1>{% trans %}Manage system{% endtrans %}</h1>
+{% if show_metrics %}
 <h2>{% trans %}Overall system status{% endtrans %}</h2>
 <div class="elevated el-2">
 	<dl>
@@ -77,6 +78,7 @@
 		</dd>
 	</dl>
 </div>
+{% endif %}
 <h2>{% trans %}Broadcast message{% endtrans %}</h2>
 <form method="POST">{{ form.csrf_token }}<div class="form layout-expanded">
 	<p class="form-desc">{% trans %}This form allows you to send a message to all users currently online on your Snikket server. Use it wisely.{% endtrans %}</p>

snikket_web/translations/messages.pot

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PROJECT VERSION\n"
 "Report-Msgid-Bugs-To: EMAIL@ADDRESS\n"
-"POT-Creation-Date: 2021-05-27 17:21+0200\n"
+"POT-Creation-Date: 2021-05-27 17:59+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -17,193 +17,193 @@ msgstr ""
 "Content-Transfer-Encoding: 8bit\n"
 "Generated-By: Babel 2.9.1\n"
 
-#: snikket_web/admin.py:61
+#: snikket_web/admin.py:66
 msgid "Limited"
 msgstr ""
 
-#: snikket_web/admin.py:66 snikket_web/templates/admin_delete_user.html:10
+#: snikket_web/admin.py:71 snikket_web/templates/admin_delete_user.html:10
 #: snikket_web/templates/admin_users.html:8
 msgid "Login name"
 msgstr ""
 
-#: snikket_web/admin.py:70 snikket_web/templates/admin_delete_user.html:12
+#: snikket_web/admin.py:75 snikket_web/templates/admin_delete_user.html:12
 #: snikket_web/templates/admin_users.html:9 snikket_web/user.py:61
 msgid "Display name"
 msgstr ""
 
-#: snikket_web/admin.py:74 snikket_web/templates/admin_edit_user.html:32
+#: snikket_web/admin.py:79 snikket_web/templates/admin_edit_user.html:32
 msgid "Access Level"
 msgstr ""
 
-#: snikket_web/admin.py:79
+#: snikket_web/admin.py:84
 msgid "Normal user"
 msgstr ""
 
-#: snikket_web/admin.py:80
+#: snikket_web/admin.py:85
 msgid "Administrator"
 msgstr ""
 
-#: snikket_web/admin.py:85
+#: snikket_web/admin.py:90
 msgid "Update user"
 msgstr ""
 
-#: snikket_web/admin.py:89
+#: snikket_web/admin.py:94
 msgid "Create password reset link"
 msgstr ""
 
-#: snikket_web/admin.py:107
+#: snikket_web/admin.py:112
 msgid "Password reset link created"
 msgstr ""
 
-#: snikket_web/admin.py:122
+#: snikket_web/admin.py:127
 msgid "User information updated."
 msgstr ""
 
-#: snikket_web/admin.py:144
+#: snikket_web/admin.py:149
 msgid "Delete user permanently"
 msgstr ""
 
-#: snikket_web/admin.py:157
+#: snikket_web/admin.py:162
 msgid "User deleted"
 msgstr ""
 
-#: snikket_web/admin.py:195
+#: snikket_web/admin.py:200
 msgid "Password reset link not found"
 msgstr ""
 
-#: snikket_web/admin.py:207
+#: snikket_web/admin.py:212
 msgid "Password reset link deleted"
 msgstr ""
 
-#: snikket_web/admin.py:227
+#: snikket_web/admin.py:232
 msgid "Invite to circle"
 msgstr ""
 
-#: snikket_web/admin.py:233
+#: snikket_web/admin.py:238
 msgid "At least one circle must be selected"
 msgstr ""
 
-#: snikket_web/admin.py:238
+#: snikket_web/admin.py:243
 msgid "Valid for"
 msgstr ""
 
-#: snikket_web/admin.py:240
+#: snikket_web/admin.py:245
 msgid "One hour"
 msgstr ""
 
-#: snikket_web/admin.py:241
+#: snikket_web/admin.py:246
 msgid "Twelve hours"
 msgstr ""
 
-#: snikket_web/admin.py:242
+#: snikket_web/admin.py:247
 msgid "One day"
 msgstr ""
 
-#: snikket_web/admin.py:243
+#: snikket_web/admin.py:248
 msgid "One week"
 msgstr ""
 
-#: snikket_web/admin.py:244
+#: snikket_web/admin.py:249
 msgid "Four weeks"
 msgstr ""
 
-#: snikket_web/admin.py:250 snikket_web/templates/admin_edit_invite.html:17
+#: snikket_web/admin.py:255 snikket_web/templates/admin_edit_invite.html:17
 msgid "Invitation type"
 msgstr ""
 
-#: snikket_web/admin.py:252 snikket_web/templates/library.j2:116
+#: snikket_web/admin.py:257 snikket_web/templates/library.j2:116
 msgid "Individual"
 msgstr ""
 
-#: snikket_web/admin.py:253 snikket_web/templates/library.j2:114
+#: snikket_web/admin.py:258 snikket_web/templates/library.j2:114
 msgid "Group"
 msgstr ""
 
-#: snikket_web/admin.py:259
+#: snikket_web/admin.py:264
 msgid "New invitation link"
 msgstr ""
 
-#: snikket_web/admin.py:321
+#: snikket_web/admin.py:326
 msgid "Revoke"
 msgstr ""
 
-#: snikket_web/admin.py:345
+#: snikket_web/admin.py:350
 msgid "Invitation created"
 msgstr ""
 
-#: snikket_web/admin.py:361
+#: snikket_web/admin.py:366
 msgid "No such invitation exists"
 msgstr ""
 
-#: snikket_web/admin.py:376
+#: snikket_web/admin.py:381
 msgid "Invitation revoked"
 msgstr ""
 
-#: snikket_web/admin.py:393 snikket_web/admin.py:441
+#: snikket_web/admin.py:398 snikket_web/admin.py:446
 msgid "Name"
 msgstr ""
 
-#: snikket_web/admin.py:398 snikket_web/templates/admin_circles.html:47
+#: snikket_web/admin.py:403 snikket_web/templates/admin_circles.html:47
 msgid "Create circle"
 msgstr ""
 
-#: snikket_web/admin.py:428
+#: snikket_web/admin.py:433
 msgid "Circle created"
 msgstr ""
 
-#: snikket_web/admin.py:446
+#: snikket_web/admin.py:451
 msgid "Select user"
 msgstr ""
 
-#: snikket_web/admin.py:451
+#: snikket_web/admin.py:456
 msgid "Update circle"
 msgstr ""
 
-#: snikket_web/admin.py:455
+#: snikket_web/admin.py:460
 msgid "Delete circle permanently"
 msgstr ""
 
-#: snikket_web/admin.py:461
+#: snikket_web/admin.py:466
 msgid "Add user"
 msgstr ""
 
-#: snikket_web/admin.py:477
+#: snikket_web/admin.py:482
 msgid "No such circle exists"
 msgstr ""
 
-#: snikket_web/admin.py:514
+#: snikket_web/admin.py:519
 msgid "Circle data updated"
 msgstr ""
 
-#: snikket_web/admin.py:520
+#: snikket_web/admin.py:525
 msgid "Circle deleted"
 msgstr ""
 
-#: snikket_web/admin.py:531
+#: snikket_web/admin.py:536
 msgid "User added to circle"
 msgstr ""
 
-#: snikket_web/admin.py:540
+#: snikket_web/admin.py:545
 msgid "User removed from circle"
 msgstr ""
 
-#: snikket_web/admin.py:610
+#: snikket_web/admin.py:616
 msgid "Message contents"
 msgstr ""
 
-#: snikket_web/admin.py:616
+#: snikket_web/admin.py:622
 msgid "Only send to online users"
 msgstr ""
 
-#: snikket_web/admin.py:620
+#: snikket_web/admin.py:626
 msgid "Post to all users"
 msgstr ""
 
-#: snikket_web/admin.py:624
+#: snikket_web/admin.py:630
 msgid "Send preview to yourself"
 msgstr ""
 
-#: snikket_web/admin.py:646
+#: snikket_web/admin.py:652
 msgid "Announcement sent!"
 msgstr ""
 
@@ -780,20 +780,24 @@ msgstr ""
 msgid "System health"
 msgstr ""
 
-#: snikket_web/templates/admin_home.html:37
+#: snikket_web/templates/admin_home.html:38
 msgid "View the server status or send a broadcast message to all users."
 msgstr ""
 
-#: snikket_web/templates/admin_home.html:39
+#: snikket_web/templates/admin_home.html:40
+msgid "Send a broadcast message to all users."
+msgstr ""
+
+#: snikket_web/templates/admin_home.html:43
 #: snikket_web/templates/admin_system.html:4
 msgid "Manage system"
 msgstr ""
 
-#: snikket_web/templates/admin_home.html:44
+#: snikket_web/templates/admin_home.html:48
 msgid "Go back to your user's web portal page."
 msgstr ""
 
-#: snikket_web/templates/admin_home.html:46
+#: snikket_web/templates/admin_home.html:50
 msgid "Exit admin panel"
 msgstr ""
 
@@ -844,72 +848,72 @@ msgstr ""
 msgid "Destroy link"
 msgstr ""
 
-#: snikket_web/templates/admin_system.html:5
+#: snikket_web/templates/admin_system.html:6
 msgid "Overall system status"
 msgstr ""
 
-#: snikket_web/templates/admin_system.html:8
+#: snikket_web/templates/admin_system.html:9
 msgid "System load (5 minute average)"
 msgstr ""
 
-#: snikket_web/templates/admin_system.html:13
+#: snikket_web/templates/admin_system.html:14
-#: snikket_web/templates/admin_system.html:21
+#: snikket_web/templates/admin_system.html:22
-#: snikket_web/templates/admin_system.html:36
+#: snikket_web/templates/admin_system.html:37
-#: snikket_web/templates/admin_system.html:44
+#: snikket_web/templates/admin_system.html:45
-#: snikket_web/templates/admin_system.html:59
+#: snikket_web/templates/admin_system.html:60
-#: snikket_web/templates/admin_system.html:67
+#: snikket_web/templates/admin_system.html:68
-#: snikket_web/templates/admin_system.html:75
+#: snikket_web/templates/admin_system.html:76
 msgid "unknown"
 msgstr ""
 
-#: snikket_web/templates/admin_system.html:16
+#: snikket_web/templates/admin_system.html:17
 msgid "Memory use"
 msgstr ""
 
-#: snikket_web/templates/admin_system.html:19
+#: snikket_web/templates/admin_system.html:20
 #, python-format
 msgid ""
 "%(percentage_global)s of %(mem_available)s. Of that, Snikket uses "
 "%(percentage_snikket)s."
 msgstr ""
 
-#: snikket_web/templates/admin_system.html:26
+#: snikket_web/templates/admin_system.html:27
 msgid "Web portal status"
 msgstr ""
 
-#: snikket_web/templates/admin_system.html:29
-#: snikket_web/templates/admin_system.html:52
-msgid "Version"
-msgstr ""
-
 #: snikket_web/templates/admin_system.html:30
 #: snikket_web/templates/admin_system.html:53
-msgid "View all versions"
+msgid "Version"
 msgstr ""
 
 #: snikket_web/templates/admin_system.html:31
 #: snikket_web/templates/admin_system.html:54
+msgid "View all versions"
+msgstr ""
+
+#: snikket_web/templates/admin_system.html:32
+#: snikket_web/templates/admin_system.html:55
 msgid "Average CPU use"
 msgstr ""
 
-#: snikket_web/templates/admin_system.html:39
+#: snikket_web/templates/admin_system.html:40
-#: snikket_web/templates/admin_system.html:62
+#: snikket_web/templates/admin_system.html:63
 msgid "Current memory use"
 msgstr ""
 
-#: snikket_web/templates/admin_system.html:49
+#: snikket_web/templates/admin_system.html:50
 msgid "Snikket server status"
 msgstr ""
 
-#: snikket_web/templates/admin_system.html:70
+#: snikket_web/templates/admin_system.html:71
 msgid "Connected devices"
 msgstr ""
 
-#: snikket_web/templates/admin_system.html:80
+#: snikket_web/templates/admin_system.html:82
 msgid "Broadcast message"
 msgstr ""
 
-#: snikket_web/templates/admin_system.html:82
+#: snikket_web/templates/admin_system.html:84
 msgid ""
 "This form allows you to send a message to all users currently online on "
 "your Snikket server. Use it wisely."