docs(schema): Add documentation for connector records
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@ -22,6 +22,7 @@
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-export([ roots/0
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, fields/1
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, desc/1
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]).
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-export([ ingress_desc/0
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@ -43,19 +44,19 @@ fields("connector") ->
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[ {mode,
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sc(hoconsc:enum([cluster_shareload]),
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#{ default => cluster_shareload
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, desc => """
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The mode of the MQTT Bridge. Can be one of 'cluster_singleton' or 'cluster_shareload'<br>
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, desc => "
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The mode of the MQTT Bridge. Can be one of 'cluster_singleton' or 'cluster_shareload'<br/>
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- cluster_singleton: create a unique MQTT connection within the emqx cluster.<br>
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- cluster_singleton: create a unique MQTT connection within the emqx cluster.<br/>
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In 'cluster_singleton' node, all messages toward the remote broker go through the same
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MQTT connection.<br>
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- cluster_shareload: create an MQTT connection on each node in the emqx cluster.<br>
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MQTT connection.<br/>
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- cluster_shareload: create an MQTT connection on each node in the emqx cluster.<br/>
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In 'cluster_shareload' mode, the incoming load from the remote broker is shared by
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using shared subscription.<br>
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using shared subscription.<br/>
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Note that the 'clientid' is suffixed by the node name, this is to avoid
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clientid conflicts between different nodes. And we can only use shared subscription
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topic filters for 'remote_topic' of ingress connections.
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"""
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"
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})}
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, {server,
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sc(emqx_schema:ip_port(),
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@ -97,11 +98,7 @@ topic filters for 'remote_topic' of ingress connections.
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, desc => "Max inflight (sent, but un-acked) messages of the MQTT protocol"
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})}
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, {replayq,
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sc(ref("replayq"),
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#{ desc => """
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Queue messages in disk files.
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"""
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})}
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sc(ref("replayq"), #{})}
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] ++ emqx_connector_schema_lib:ssl_fields();
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fields("ingress") ->
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@ -120,23 +117,23 @@ fields("ingress") ->
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, {local_topic,
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sc(binary(),
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#{ validator => fun ?MODULE:non_empty_string/1
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, desc => """
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Send messages to which topic of the local broker.<br>
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, desc => "
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Send messages to which topic of the local broker.<br/>
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Template with variables is allowed.
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"""
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"
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})}
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, {local_qos,
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sc(qos(),
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#{ default => <<"${qos}">>
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, desc => """
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The QoS of the MQTT message to be sent.<br>
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Template with variables is allowed."""
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, desc => "
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The QoS of the MQTT message to be sent.<br/>
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Template with variables is allowed."
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})}
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, {hookpoint,
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sc(binary(),
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#{ desc => """
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#{ desc => "
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The hook point will be triggered when there's any message received from the remote broker.
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"""
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"
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})}
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] ++ common_inout_confs();
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@ -151,94 +148,101 @@ fields("egress") ->
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sc(binary(),
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#{ default => <<"${topic}">>
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, validator => fun ?MODULE:non_empty_string/1
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, desc => """
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Forward to which topic of the remote broker.<br>
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, desc => "
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Forward to which topic of the remote broker.<br/>
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Template with variables is allowed.
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"""
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"
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})}
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, {remote_qos,
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sc(qos(),
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#{ default => <<"${qos}">>
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, desc => """
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The QoS of the MQTT message to be sent.<br>
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Template with variables is allowed."""
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, desc => "
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The QoS of the MQTT message to be sent.<br/>
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Template with variables is allowed."
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})}
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] ++ common_inout_confs();
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fields("replayq") ->
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[ {dir,
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sc(hoconsc:union([boolean(), string()]),
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#{ desc => """
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The dir where the replayq file saved.<br>
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#{ desc => "
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The dir where the replayq file saved.<br/>
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Set to 'false' disables the replayq feature.
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"""
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"
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})}
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, {seg_bytes,
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sc(emqx_schema:bytesize(),
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#{ default => "100MB"
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, desc => """
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The size in bytes of a single segment.<br>
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, desc => "
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The size in bytes of a single segment.<br/>
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A segment is mapping to a file in the replayq dir. If the current segment is full, a new segment
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(file) will be opened to write.
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"""
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"
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})}
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, {offload,
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sc(boolean(),
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#{ default => false
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, desc => """
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In offload mode, the disk queue is only used to offload queue tail segments.<br>
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, desc => "
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In offload mode, the disk queue is only used to offload queue tail segments.<br/>
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The messages are cached in the memory first, then it writes to the replayq files after the size of
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the memory cache reaches 'seg_bytes'.
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"""
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"
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})}
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].
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desc("ingress") ->
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ingress_desc();
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desc("egress") ->
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egress_desc();
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desc("replayq") ->
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"Queue messages in disk files.";
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desc(_) ->
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undefined.
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topic_mappings() ->
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[ {ingress,
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sc(ref("ingress"),
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#{ default => #{}
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, desc => ingress_desc()
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})}
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, {egress,
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sc(ref("egress"),
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#{ default => #{}
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, desc => egress_desc()
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})}
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].
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ingress_desc() -> """
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ingress_desc() -> "
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The ingress config defines how this bridge receive messages from the remote MQTT broker, and then
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send them to the local broker.<br>
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send them to the local broker.<br/>
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Template with variables is allowed in 'local_topic', 'remote_qos', 'qos', 'retain',
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'payload'.<br>
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'payload'.<br/>
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NOTE: if this bridge is used as the input of a rule (emqx rule engine), and also local_topic is
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configured, then messages got from the remote broker will be sent to both the 'local_topic' and
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the rule.
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""".
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".
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egress_desc() -> """
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egress_desc() -> "
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The egress config defines how this bridge forwards messages from the local broker to the remote
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broker.<br>
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Template with variables is allowed in 'remote_topic', 'qos', 'retain', 'payload'.<br>
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broker.<br/>
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Template with variables is allowed in 'remote_topic', 'qos', 'retain', 'payload'.<br/>
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NOTE: if this bridge is used as the output of a rule (emqx rule engine), and also local_topic
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is configured, then both the data got from the rule and the MQTT messages that matches
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local_topic will be forwarded.
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""".
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".
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common_inout_confs() ->
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[ {retain,
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sc(hoconsc:union([boolean(), binary()]),
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#{ default => <<"${retain}">>
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, desc => """
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The 'retain' flag of the MQTT message to be sent.<br>
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Template with variables is allowed."""
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, desc => "
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The 'retain' flag of the MQTT message to be sent.<br/>
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Template with variables is allowed."
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})}
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, {payload,
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sc(binary(),
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#{ default => <<"${payload}">>
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, desc => """
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The payload of the MQTT message to be sent.<br>
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Template with variables is allowed."""
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, desc => "
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The payload of the MQTT message to be sent.<br/>
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Template with variables is allowed."
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})}
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].
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