fix: metrics macro with description

This commit is contained in:
JimMoen 2024-06-12 18:55:10 +08:00
parent 756797b258
commit cde4cb1358
No known key found for this signature in database
3 changed files with 145 additions and 295 deletions

View File

@ -19,206 +19,240 @@
%% Bytes sent and received
-define(BYTES_METRICS, [
%% Total bytes received
{counter, 'bytes.received'},
%% Total bytes sent
{counter, 'bytes.sent'}
{counter, 'bytes.received', <<"Number of bytes received ">>},
{counter, 'bytes.sent', <<"Number of bytes sent on this connection">>}
]).
%% Packets sent and received
-define(PACKET_METRICS, [
%% All Packets received
{counter, 'packets.received'},
%% All Packets sent
{counter, 'packets.sent'},
%% CONNECT Packets received
{counter, 'packets.connect.received'},
%% CONNACK Packets sent
{counter, 'packets.connack.sent'},
%% CONNACK error sent
{counter, 'packets.connack.error'},
%% CONNACK auth_error sent
{counter, 'packets.connack.auth_error'},
%% PUBLISH packets received
{counter, 'packets.publish.received'},
{counter, 'packets.received', <<"Number of received packet">>},
{counter, 'packets.sent', <<"Number of sent packet">>},
{counter, 'packets.connect.received', <<"Number of received CONNECT packet">>},
{counter, 'packets.connack.sent', <<"Number of sent CONNACK packet">>},
{counter, 'packets.connack.error',
<<"Number of received CONNECT packet with unsuccessful connections">>},
{counter, 'packets.connack.auth_error',
<<"Number of received CONNECT packet with failed authentication">>},
{counter, 'packets.publish.received', <<"Number of received PUBLISH packet">>},
%% PUBLISH packets sent
{counter, 'packets.publish.sent'},
{counter, 'packets.publish.sent', <<"Number of sent PUBLISH packet">>},
%% PUBLISH packet_id inuse
{counter, 'packets.publish.inuse'},
{counter, 'packets.publish.inuse',
<<"Number of received PUBLISH packet with occupied identifiers">>},
%% PUBLISH failed for error
{counter, 'packets.publish.error'},
{counter, 'packets.publish.error',
<<"Number of received PUBLISH packet that cannot be published">>},
%% PUBLISH failed for auth error
{counter, 'packets.publish.auth_error'},
{counter, 'packets.publish.auth_error',
<<"Number of received PUBLISH packets with failed the Authorization check">>},
%% PUBLISH(QoS2) packets dropped
{counter, 'packets.publish.dropped'},
{counter, 'packets.publish.dropped',
<<"Number of messages discarded due to the receiving limit">>},
%% PUBACK packets received
{counter, 'packets.puback.received'},
{counter, 'packets.puback.received', <<"Number of received PUBACK packet">>},
%% PUBACK packets sent
{counter, 'packets.puback.sent'},
{counter, 'packets.puback.sent', <<"Number of sent PUBACK packet">>},
%% PUBACK packet_id inuse
{counter, 'packets.puback.inuse'},
{counter, 'packets.puback.inuse',
<<"Number of received PUBACK packet with occupied identifiers">>},
%% PUBACK packets missed
{counter, 'packets.puback.missed'},
{counter, 'packets.puback.missed', <<"Number of received packet with identifiers.">>},
%% PUBREC packets received
{counter, 'packets.pubrec.received'},
{counter, 'packets.pubrec.received', <<"Number of received PUBREC packet">>},
%% PUBREC packets sent
{counter, 'packets.pubrec.sent'},
{counter, 'packets.pubrec.sent', <<"Number of sent PUBREC packet">>},
%% PUBREC packet_id inuse
{counter, 'packets.pubrec.inuse'},
{counter, 'packets.pubrec.inuse',
<<"Number of received PUBREC packet with occupied identifiers">>},
%% PUBREC packets missed
{counter, 'packets.pubrec.missed'},
{counter, 'packets.pubrec.missed',
<<"Number of received PUBREC packet with unknown identifiers">>},
%% PUBREL packets received
{counter, 'packets.pubrel.received'},
{counter, 'packets.pubrel.received', <<"Number of received PUBREL packet">>},
%% PUBREL packets sent
{counter, 'packets.pubrel.sent'},
{counter, 'packets.pubrel.sent', <<"Number of sent PUBREL packet">>},
%% PUBREL packets missed
{counter, 'packets.pubrel.missed'},
{counter, 'packets.pubrel.missed',
<<"Number of received PUBREC packet with unknown identifiers">>},
%% PUBCOMP packets received
{counter, 'packets.pubcomp.received'},
{counter, 'packets.pubcomp.received', <<"Number of received PUBCOMP packet">>},
%% PUBCOMP packets sent
{counter, 'packets.pubcomp.sent'},
{counter, 'packets.pubcomp.sent', <<"Number of sent PUBCOMP packet">>},
%% PUBCOMP packet_id inuse
{counter, 'packets.pubcomp.inuse'},
{counter, 'packets.pubcomp.inuse',
<<"Number of received PUBCOMP packet with occupied identifiers">>},
%% PUBCOMP packets missed
{counter, 'packets.pubcomp.missed'},
{counter, 'packets.pubcomp.missed', <<"Number of missed PUBCOMP packet">>},
%% SUBSCRIBE Packets received
{counter, 'packets.subscribe.received'},
{counter, 'packets.subscribe.received', <<"Number of received SUBSCRIBE packet">>},
%% SUBSCRIBE error
{counter, 'packets.subscribe.error'},
{counter, 'packets.subscribe.error',
<<"Number of received SUBSCRIBE packet with failed subscriptions">>},
%% SUBSCRIBE failed for not auth
{counter, 'packets.subscribe.auth_error'},
{counter, 'packets.subscribe.auth_error',
<<"Number of received SUBACK packet with failed Authorization check">>},
%% SUBACK packets sent
{counter, 'packets.suback.sent'},
{counter, 'packets.suback.sent', <<"Number of sent SUBACK packet">>},
%% UNSUBSCRIBE Packets received
{counter, 'packets.unsubscribe.received'},
{counter, 'packets.unsubscribe.received', <<"Number of received UNSUBSCRIBE packet">>},
%% UNSUBSCRIBE error
{counter, 'packets.unsubscribe.error'},
{counter, 'packets.unsubscribe.error',
<<"Number of received UNSUBSCRIBE packet with failed unsubscriptions">>},
%% UNSUBACK Packets sent
{counter, 'packets.unsuback.sent'},
{counter, 'packets.unsuback.sent', <<"Number of sent UNSUBACK packet">>},
%% PINGREQ packets received
{counter, 'packets.pingreq.received'},
{counter, 'packets.pingreq.received', <<"Number of received PINGREQ packet">>},
%% PINGRESP Packets sent
{counter, 'packets.pingresp.sent'},
{counter, 'packets.pingresp.sent', <<"Number of sent PUBRESP packet">>},
%% DISCONNECT Packets received
{counter, 'packets.disconnect.received'},
{counter, 'packets.disconnect.received', <<"Number of received DISCONNECT packet">>},
%% DISCONNECT Packets sent
{counter, 'packets.disconnect.sent'},
{counter, 'packets.disconnect.sent', <<"Number of sent DISCONNECT packet">>},
%% Auth Packets received
{counter, 'packets.auth.received'},
{counter, 'packets.auth.received', <<"Number of received AUTH packet">>},
%% Auth Packets sent
{counter, 'packets.auth.sent'}
{counter, 'packets.auth.sent', <<"Number of sent AUTH packet">>}
]).
%% Messages sent/received and pubsub
-define(MESSAGE_METRICS, [
%% All Messages received
{counter, 'messages.received'},
{counter, 'messages.received', <<
"Number of messages received from the client, equal to the sum of "
"messages.qos0.received\fmessages.qos1.received and messages.qos2.received"
>>},
%% All Messages sent
{counter, 'messages.sent'},
{counter, 'messages.sent', <<
"Number of messages sent to the client, equal to the sum of "
"messages.qos0.sent\fmessages.qos1.sent and messages.qos2.sent"
>>},
%% QoS0 Messages received
{counter, 'messages.qos0.received'},
{counter, 'messages.qos0.received', <<"Number of QoS 0 messages received from clients">>},
%% QoS0 Messages sent
{counter, 'messages.qos0.sent'},
{counter, 'messages.qos0.sent', <<"Number of QoS 0 messages sent to clients">>},
%% QoS1 Messages received
{counter, 'messages.qos1.received'},
{counter, 'messages.qos1.received', <<"Number of QoS 1 messages received from clients">>},
%% QoS1 Messages sent
{counter, 'messages.qos1.sent'},
{counter, 'messages.qos1.sent', <<"Number of QoS 1 messages sent to clients">>},
%% QoS2 Messages received
{counter, 'messages.qos2.received'},
{counter, 'messages.qos2.received', <<"Number of QoS 2 messages received from clients">>},
%% QoS2 Messages sent
{counter, 'messages.qos2.sent'},
{counter, 'messages.qos2.sent', <<"Number of QoS 2 messages sent to clients">>},
%% PubSub Metrics
%% Messages Publish
{counter, 'messages.publish'},
{counter, 'messages.publish',
<<"Number of messages published in addition to system messages">>},
%% Messages dropped due to no subscribers
{counter, 'messages.dropped'},
{counter, 'messages.dropped',
<<"Number of messages dropped before forwarding to the subscription process">>},
%% Messages that failed validations
{counter, 'messages.validation_failed'},
{counter, 'messages.validation_failed', <<"Number of message validation failed">>},
%% Messages that passed validations
{counter, 'messages.validation_succeeded'},
{counter, 'messages.validation_succeeded', <<"Number of message validation successful">>},
%% % Messages that failed transformations
{counter, 'messages.transformation_failed'},
{counter, 'messages.transformation_failed', <<"Number fo message transformation failed">>},
%% % Messages that passed transformations
{counter, 'messages.transformation_succeeded'},
{counter, 'messages.transformation_succeeded',
<<"Number fo message transformation succeeded">>},
%% QoS2 Messages expired
{counter, 'messages.dropped.await_pubrel_timeout'},
{counter, 'messages.dropped.await_pubrel_timeout',
<<"Number of messages dropped due to waiting PUBREL timeout">>},
%% Messages dropped
{counter, 'messages.dropped.no_subscribers'},
{counter, 'messages.dropped.no_subscribers',
<<"Number of messages dropped due to no subscribers">>},
%% Messages forward
{counter, 'messages.forward'},
{counter, 'messages.forward', <<"Number of messages forwarded to other nodes">>},
%% Messages delayed
{counter, 'messages.delayed'},
{counter, 'messages.delayed', <<"Number of delay-published messages">>},
%% Messages delivered
{counter, 'messages.delivered'},
{counter, 'messages.delivered',
<<"Number of messages forwarded to the subscription process internally">>},
%% Messages acked
{counter, 'messages.acked'},
{counter, 'messages.acked', <<"Number of received PUBACK and PUBREC packet">>},
%% Messages persistently stored
{counter, 'messages.persisted'}
{counter, 'messages.persisted', <<"Number of message persisted">>}
]).
%% Delivery metrics
-define(DELIVERY_METRICS, [
%% All Dropped during delivery
{counter, 'delivery.dropped'},
{counter, 'delivery.dropped', <<"Total number of discarded messages when sending">>},
%% Dropped due to no_local
{counter, 'delivery.dropped.no_local'},
{counter, 'delivery.dropped.no_local', <<
"Number of messages that were dropped due to the No Local subscription "
"option when sending"
>>},
%% Dropped due to message too large
{counter, 'delivery.dropped.too_large'},
{counter, 'delivery.dropped.too_large', <<
"The number of messages that were dropped because the length exceeded "
"the limit when sending"
>>},
%% Dropped qos0 message
{counter, 'delivery.dropped.qos0_msg'},
{counter, 'delivery.dropped.qos0_msg', <<
"Number of messages with QoS 0 that were dropped because the message "
"queue was full when sending"
>>},
%% Dropped due to queue full
{counter, 'delivery.dropped.queue_full'},
{counter, 'delivery.dropped.queue_full', <<
"Number of messages with a non-zero QoS that were dropped because the "
"message queue was full when sending"
>>},
%% Dropped due to expired
{counter, 'delivery.dropped.expired'}
{counter, 'delivery.dropped.expired',
<<"Number of messages dropped due to message expiration on sending">>}
]).
%% Client Lifecircle metrics
-define(CLIENT_METRICS, [
{counter, 'client.connect'},
{counter, 'client.connack'},
{counter, 'client.connected'},
{counter, 'client.authenticate'},
{counter, 'client.auth.anonymous'},
{counter, 'client.authorize'},
{counter, 'client.subscribe'},
{counter, 'client.unsubscribe'},
{counter, 'client.disconnected'}
{counter, 'client.connect', <<"Number of client connections">>},
{counter, 'client.connack', <<"Number of CONNACK packet sent">>},
{counter, 'client.connected', <<"Number of successful client connections">>},
{counter, 'client.authenticate', <<"Number of client authentications">>},
{counter, 'client.auth.anonymous', <<"Number of clients who log in anonymously">>},
{counter, 'client.authorize', <<"Number of Authorization rule checks">>},
{counter, 'client.subscribe', <<"Number of client subscriptions">>},
{counter, 'client.unsubscribe', <<"Number of client unsubscriptions">>},
{counter, 'client.disconnected', <<"Number of client disconnects">>}
]).
%% Session Lifecircle metrics
-define(SESSION_METRICS, [
{counter, 'session.created'},
{counter, 'session.resumed'},
%% Session taken over by another client (Connect with clean_session|clean_start=false)
{counter, 'session.takenover'},
%% Session taken over by another client (Connect with clean_session|clean_start=true)
{counter, 'session.discarded'},
{counter, 'session.terminated'}
{counter, 'session.created', <<"Number of sessions created">>},
{counter, 'session.resumed',
<<"Number of sessions resumed because Clean Session or Clean Start is false">>},
{counter, 'session.takenover',
<<"Number of sessions takenover because Clean Session or Clean Start is false">>},
{counter, 'session.discarded',
<<"Number of sessions dropped because Clean Session or Clean Start is true">>},
{counter, 'session.terminated', <<"Number of terminated sessions">>}
]).
%% Statistic metrics for ACL checking
-define(STASTS_ACL_METRICS, [
{counter, 'authorization.allow'},
{counter, 'authorization.deny'},
{counter, 'authorization.cache_hit'},
{counter, 'authorization.cache_miss'}
{counter, 'authorization.allow', <<"Number of Authorization allow">>},
{counter, 'authorization.deny', <<"Number of Authorization deny">>},
{counter, 'authorization.cache_hit', <<"Number of Authorization hits the cache">>},
{counter, 'authorization.cache_miss', <<"Number of Authorization cache missing">>}
]).
%% Statistic metrics for auth checking
-define(STASTS_AUTHN_METRICS, [
{counter, 'authentication.success'},
{counter, 'authentication.success.anonymous'},
{counter, 'authentication.failure'}
{counter, 'authentication.success', <<"Number of successful client Authentication">>},
{counter, 'authentication.success.anonymous',
<<"Number of successful client Authentication due to anonymous">>},
{counter, 'authentication.failure', <<"Number of failed client Authentication">>}
]).
%% Overload protection counters
-define(OLP_METRICS, [
{counter, 'overload_protection.delay.ok'},
{counter, 'overload_protection.delay.timeout'},
{counter, 'overload_protection.hibernation'},
{counter, 'overload_protection.gc'},
{counter, 'overload_protection.new_conn'}
{counter, 'overload_protection.delay.ok', <<"Number of overload protection delayed">>},
{counter, 'overload_protection.delay.timeout',
<<"Number of overload protection delay timeout">>},
{counter, 'overload_protection.hibernation', <<"Number of overload protection hibernation">>},
{counter, 'overload_protection.gc', <<"Number of overload protection garbage collection">>},
{counter, 'overload_protection.new_conn',
<<"Number of overload protection close new incoming connection">>}
]).
-endif.

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@ -88,7 +88,7 @@
-define(SERVER, ?MODULE).
olp_metrics() ->
lists:map(fun({_, Metric}) -> Metric end, ?OLP_METRICS).
lists:map(fun({_, Metric, _}) -> Metric end, ?OLP_METRICS).
-record(state, {next_idx = 1}).
@ -369,7 +369,7 @@ init([]) ->
]),
% Store reserved indices
ok = lists:foreach(
fun({Type, Name}) ->
fun({Type, Name, _Desc}) ->
Idx = reserved_idx(Name),
Metric = #metric{name = Name, type = Type, idx = Idx},
true = ets:insert(?TAB, Metric),

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@ -20,6 +20,7 @@
-include_lib("typerefl/include/types.hrl").
-include_lib("hocon/include/hocon_types.hrl").
-include_lib("emqx/include/emqx_metrics.hrl").
-import(hoconsc, [mk/2, ref/2]).
@ -125,198 +126,13 @@ properties() ->
]),
lists:reverse(
lists:foldl(
fun({_Type, MetricName}, Acc) ->
[m(MetricName) | Acc]
fun({_Type, MetricName, Desc}, Acc) ->
[m(MetricName, Desc) | Acc]
end,
[],
Metrics
)
).
m('actions.failure' = K) ->
m(K, <<"Number of failure executions of the rule engine action">>);
m('actions.success' = K) ->
m(K, <<"Number of successful executions of the rule engine action">>);
m('bytes.received' = K) ->
m(K, <<"Number of bytes received ">>);
m('bytes.sent' = K) ->
m(K, <<"Number of bytes sent on this connection">>);
m('client.auth.anonymous' = K) ->
m(K, <<"Number of clients who log in anonymously">>);
m('client.authenticate' = K) ->
m(K, <<"Number of client authentications">>);
m('client.check_authz' = K) ->
m(K, <<"Number of Authorization rule checks">>);
m('client.connack' = K) ->
m(K, <<"Number of CONNACK packet sent">>);
m('client.connect' = K) ->
m(K, <<"Number of client connections">>);
m('client.connected' = K) ->
m(K, <<"Number of successful client connections">>);
m('client.disconnected' = K) ->
m(K, <<"Number of client disconnects">>);
m('client.subscribe' = K) ->
m(K, <<"Number of client subscriptions">>);
m('client.unsubscribe' = K) ->
m(K, <<"Number of client unsubscriptions">>);
m('delivery.dropped' = K) ->
m(K, <<"Total number of discarded messages when sending">>);
m('delivery.dropped.expired' = K) ->
m(K, <<"Number of messages dropped due to message expiration on sending">>);
m('delivery.dropped.no_local' = K) ->
m(K, <<
"Number of messages that were dropped due to the No Local subscription "
"option when sending"
>>);
m('delivery.dropped.qos0_msg' = K) ->
m(K, <<
"Number of messages with QoS 0 that were dropped because the message "
"queue was full when sending"
>>);
m('delivery.dropped.queue_full' = K) ->
m(K, <<
"Number of messages with a non-zero QoS that were dropped because the "
"message queue was full when sending"
>>);
m('delivery.dropped.too_large' = K) ->
m(K, <<
"The number of messages that were dropped because the length exceeded "
"the limit when sending"
>>);
m('messages.acked' = K) ->
m(K, <<"Number of received PUBACK and PUBREC packet">>);
m('messages.delayed' = K) ->
m(K, <<"Number of delay-published messages">>);
m('messages.delivered' = K) ->
m(K, <<"Number of messages forwarded to the subscription process internally">>);
m('messages.dropped' = K) ->
m(K, <<"Total number of messages dropped before forwarding to the subscription process">>);
m('messages.dropped.await_pubrel_timeout' = K) ->
m(K, <<"Number of messages dropped due to waiting PUBREL timeout">>);
m('messages.dropped.no_subscribers' = K) ->
m(K, <<"Number of messages dropped due to no subscribers">>);
m('messages.forward' = K) ->
m(K, <<"Number of messages forwarded to other nodes">>);
m('messages.publish' = K) ->
m(K, <<"Number of messages published in addition to system messages">>);
m('messages.qos0.received' = K) ->
m(K, <<"Number of QoS 0 messages received from clients">>);
m('messages.qos0.sent' = K) ->
m(K, <<"Number of QoS 0 messages sent to clients">>);
m('messages.qos1.received' = K) ->
m(K, <<"Number of QoS 1 messages received from clients">>);
m('messages.qos1.sent' = K) ->
m(K, <<"Number of QoS 1 messages sent to clients">>);
m('messages.qos2.received' = K) ->
m(K, <<"Number of QoS 2 messages received from clients">>);
m('messages.qos2.sent' = K) ->
m(K, <<"Number of QoS 2 messages sent to clients">>);
m('messages.received' = K) ->
m(K, <<
"Number of messages received from the client, equal to the sum of "
"messages.qos0.received\fmessages.qos1.received and messages.qos2.received"
>>);
%% m(
%% 'messages.retained',
%% <<"Number of retained messages">>
%% ),
m('messages.sent' = K) ->
m(K, <<
"Number of messages sent to the client, equal to the sum of "
"messages.qos0.sent\fmessages.qos1.sent and messages.qos2.sent"
>>);
m('packets.auth.received' = K) ->
m(K, <<"Number of received AUTH packet">>);
m('packets.auth.sent' = K) ->
m(K, <<"Number of sent AUTH packet">>);
m('packets.connack.auth_error' = K) ->
m(K, <<"Number of received CONNECT packet with failed authentication">>);
m('packets.connack.error' = K) ->
m(K, <<"Number of received CONNECT packet with unsuccessful connections">>);
m('packets.connack.sent' = K) ->
m(K, <<"Number of sent CONNACK packet">>);
m('packets.connect.received' = K) ->
m(K, <<"Number of received CONNECT packet">>);
m('packets.disconnect.received' = K) ->
m(K, <<"Number of received DISCONNECT packet">>);
m('packets.disconnect.sent' = K) ->
m(K, <<"Number of sent DISCONNECT packet">>);
m('packets.pingreq.received' = K) ->
m(K, <<"Number of received PINGREQ packet">>);
m('packets.pingresp.sent' = K) ->
m(K, <<"Number of sent PUBRESP packet">>);
m('packets.puback.inuse' = K) ->
m(K, <<"Number of received PUBACK packet with occupied identifiers">>);
m('packets.puback.missed' = K) ->
m(K, <<"Number of received packet with identifiers.">>);
m('packets.puback.received' = K) ->
m(K, <<"Number of received PUBACK packet">>);
m('packets.puback.sent' = K) ->
m(K, <<"Number of sent PUBACK packet">>);
m('packets.pubcomp.inuse' = K) ->
m(K, <<"Number of received PUBCOMP packet with occupied identifiers">>);
m('packets.pubcomp.missed' = K) ->
m(K, <<"Number of missed PUBCOMP packet">>);
m('packets.pubcomp.received' = K) ->
m(K, <<"Number of received PUBCOMP packet">>);
m('packets.pubcomp.sent' = K) ->
m(K, <<"Number of sent PUBCOMP packet">>);
m('packets.publish.auth_error' = K) ->
m(K, <<"Number of received PUBLISH packets with failed the Authorization check">>);
m('packets.publish.dropped' = K) ->
m(K, <<"Number of messages discarded due to the receiving limit">>);
m('packets.publish.error' = K) ->
m(K, <<"Number of received PUBLISH packet that cannot be published">>);
m('packets.publish.inuse' = K) ->
m(K, <<"Number of received PUBLISH packet with occupied identifiers">>);
m('packets.publish.received' = K) ->
m(K, <<"Number of received PUBLISH packet">>);
m('packets.publish.sent' = K) ->
m(K, <<"Number of sent PUBLISH packet">>);
m('packets.pubrec.inuse' = K) ->
m(K, <<"Number of received PUBREC packet with occupied identifiers">>);
m('packets.pubrec.missed' = K) ->
m(K, <<"Number of received PUBREC packet with unknown identifiers">>);
m('packets.pubrec.received' = K) ->
m(K, <<"Number of received PUBREC packet">>);
m('packets.pubrec.sent' = K) ->
m(K, <<"Number of sent PUBREC packet">>);
m('packets.pubrel.missed' = K) ->
m(K, <<"Number of received PUBREC packet with unknown identifiers">>);
m('packets.pubrel.received' = K) ->
m(K, <<"Number of received PUBREL packet">>);
m('packets.pubrel.sent' = K) ->
m(K, <<"Number of sent PUBREL packet">>);
m('packets.received' = K) ->
m(K, <<"Number of received packet">>);
m('packets.sent' = K) ->
m(K, <<"Number of sent packet">>);
m('packets.suback.sent' = K) ->
m(K, <<"Number of sent SUBACK packet">>);
m('packets.subscribe.auth_error' = K) ->
m(K, <<"Number of received SUBACK packet with failed Authorization check">>);
m('packets.subscribe.error' = K) ->
m(K, <<"Number of received SUBSCRIBE packet with failed subscriptions">>);
m('packets.subscribe.received' = K) ->
m(K, <<"Number of received SUBSCRIBE packet">>);
m('packets.unsuback.sent' = K) ->
m(K, <<"Number of sent UNSUBACK packet">>);
m('packets.unsubscribe.error' = K) ->
m(K, <<"Number of received UNSUBSCRIBE packet with failed unsubscriptions">>);
m('packets.unsubscribe.received' = K) ->
m(K, <<"Number of received UNSUBSCRIBE packet">>);
m('rules.matched' = K) ->
m(K, <<"Number of rule matched">>);
m('session.created' = K) ->
m(K, <<"Number of sessions created">>);
m('session.discarded' = K) ->
m(K, <<"Number of sessions dropped because Clean Session or Clean Start is true">>);
m('session.resumed' = K) ->
m(K, <<"Number of sessions resumed because Clean Session or Clean Start is false">>);
m('session.takenover' = K) ->
m(K, <<"Number of sessions takenover because Clean Session or Clean Start is false">>);
m('session.terminated' = K) ->
m(K, <<"Number of terminated sessions">>).
m(K, Desc) ->
{K, mk(non_neg_integer(), #{desc => Desc})}.