fix: improve document quality

apps/emqx_connector/i18n/emqx_connector_mongo.conf

@@ -150,4 +150,48 @@ The MongoDB default port 27017 is used if `[:Port]` is not specified.
             }
     }
 
+    desc_single {
+                   desc {
+                         en: """Settings for a single MongoDB instance."""
+                         zh: """配置 Single 模式"""
+                        }
+                   label: {
+                           en: "Setting Single MongoDB"
+                           zh: "配置 Single 模式"
+                          }
+                  }
+
+    desc_rs {
+                   desc {
+                         en: """Settings for replica set."""
+                         zh: """配置 Replica Set"""
+                        }
+                   label: {
+                           en: "Setting Replica Set"
+                           zh: "配置 Replica Set"
+                          }
+                  }
+
+    desc_sharded {
+                   desc {
+                         en: """Settings for sharded cluster."""
+                         zh: """配置 Sharded Cluster"""
+                        }
+                   label: {
+                           en: "Setting Sharded Cluster"
+                           zh: "配置 Sharded Cluster"
+                          }
+                  }
+
+    desc_topology {
+                   desc {
+                         en: """Topology of MongoDB."""
+                         zh: """配置 Topology"""
+                        }
+                   label: {
+                           en: "Setting Topology"
+                           zh: "配置 Topology"
+                          }
+                  }
+
 }

apps/emqx_connector/i18n/emqx_connector_mqtt_schema.conf

@@ -297,4 +297,66 @@ Template with variables is allowed.
             }
     }
 
+    desc_connector {
+                   desc {
+                         en: """Generic configuration for the connector."""
+                         zh: """连接器的通用配置。"""
+                        }
+                   label: {
+                           en: "Connector Generic Configuration"
+                           zh: "连接器通用配置。"
+                          }
+                  }
+
+    desc_ingress {
+                   desc {
+                         en: """
+The ingress config defines how this bridge receive messages from the remote MQTT broker, and then send them to the local broker.<br/>
+Template with variables is allowed in 'local_topic', 'remote_qos', 'qos', 'retain', 'payload'.<br/>
+NOTE: if this bridge is used as the input of a rule (emqx rule engine), and also local_topic is configured, then messages got from the remote broker will be sent to both the 'local_topic' and the rule.
+"""
+                         zh: """
+Ingress 模式定义了这个 bridge 如何从远程 MQTT broker 接收消息，然后将它们发送到本地 broker 。<br/>
+允许带有的模板变量: 'local_topic'、'remote_qos'、'qos'、'retain'、'payload' 。<br/>
+注意：如果这个 bridge 被用作规则的输入（emqx 规则引擎），并且还配置了 local_topic，那么从远程 broker 获取的消息将同时被发送到 'local_topic' 和规则引擎。
+"""
+                        }
+                   label: {
+                           en: "Ingress Config"
+                           zh: "Ingress 模式配置"
+                          }
+                  }
+
+    desc_egress {
+                   desc {
+                         en: """
+The egress config defines how this bridge forwards messages from the local broker to the remote broker.<br/>
+Template with variables is allowed in 'remote_topic', 'qos', 'retain', 'payload'.<br/>
+NOTE: if this bridge is used as the output of a rule (emqx rule engine), and also local_topic is configured, then both the data got from the rule and the MQTT messages that matches local_topic will be forwarded.
+"""
+                         zh: """
+Egress 模式定义了 bridge 如何将消息从本地 broker 转发到远程 broker。<br/>
+允许带有的模板变量: 'remote_topic'、'qos'、'retain'、'payload' 。<br/>
+注意：如果这个 bridge 作为规则（emqx 规则引擎）的输出，并且还配置了 local_topic，那么从规则引擎中获取的数据和匹配 local_topic 的 MQTT 消息都会被转发到远程 broker 。
+"""
+                        }
+                   label: {
+                           en: "Egress Config"
+                           zh: "Egress 模式配置"
+                          }
+                  }
+
+    desc_replayq {
+                   desc {
+                         en: """Queue messages in disk files."""
+                         zh: """本地磁盘消息队列"""
+                        }
+                   label: {
+                           en: "Replayq"
+                           zh: "本地磁盘消息队列"
+                          }
+                  }
+
+
+
 }

apps/emqx_connector/i18n/emqx_connector_schema.conf

@@ -11,4 +11,21 @@ emqx_connector_schema {
             }
     }
 
+    desc_connector {
+        desc {
+          en: """
+Configuration for EMQX connectors.<br/>
+A connector maintains the data related to the external resources, such as MySQL database.
+"""
+          zh: """
+EMQX 连接器的配置。<br/>
+连接器维护与外部资源相关的数据，比如 MySQL 数据库。
+"""
+        }
+        label: {
+              en: "Connector"
+              zh: "连接器"
+            }
+    }
+
 }

apps/emqx_connector/src/emqx_connector_http.erl

@@ -102,9 +102,7 @@ fields(config) ->
             })}
     , {request, hoconsc:mk(
         ref("request"),
-        #{ default => undefined
-         , required => false
-         , desc => ?DESC("request")
+        #{ desc => ?DESC("request")
          })}
     ] ++ emqx_connector_schema_lib:ssl_fields();
 

apps/emqx_connector/src/emqx_connector_ldap.erl

@@ -144,6 +144,7 @@ ldap_fields() ->
 servers(type) -> list();
 servers(validator) -> [?NOT_EMPTY("the value of the field 'servers' cannot be empty")];
 servers(converter) -> fun to_servers_raw/1;
+servers(required) -> true;
 servers(_) -> undefined.
 
 bind_dn(type) -> binary();

apps/emqx_connector/src/emqx_connector_mongo.erl

@@ -94,13 +94,13 @@ fields(topology) ->
     ].
 
 desc(single) ->
-    "Settings for a single MongoDB instance.";
+    ?DESC("desc_single");
 desc(rs) ->
-    "Settings for replica set.";
+    ?DESC("desc_rs");
 desc(sharded) ->
-    "Settings for sharded cluster.";
+    ?DESC("desc_sharded");
 desc(topology) ->
-    "Topology of MongoDB.";
+    ?DESC("desc_topology");
 desc(_) ->
     undefined.
 

apps/emqx_connector/src/emqx_connector_redis.erl

@@ -56,7 +56,6 @@ roots() ->
 fields(single) ->
     [ {server, fun server/1}
     , {redis_type, #{type => hoconsc:enum([single]),
-                     default => single,
                      required => true,
                      desc => ?DESC("single")
                     }}
@@ -66,7 +65,6 @@ fields(single) ->
 fields(cluster) ->
     [ {servers, fun servers/1}
     , {redis_type, #{type => hoconsc:enum([cluster]),
-                     default => cluster,
                      required => true,
                      desc => ?DESC("cluster")
                     }}
@@ -76,7 +74,6 @@ fields(cluster) ->
 fields(sentinel) ->
     [ {servers, fun servers/1}
     , {redis_type, #{type => hoconsc:enum([sentinel]),
-                     default => sentinel,
                      required => true,
                      desc => ?DESC("sentinel")
                     }}

apps/emqx_connector/src/emqx_connector_schema.erl

@@ -64,10 +64,7 @@ fields("connectors") ->
     ].
 
 desc(Record) when Record =:= connectors;
-                  Record =:= "connectors" ->
-    "Configuration for EMQX connectors.<br/>"
-    "A connector maintains the data related to the external resources,\n"
-    "such as MySQL database.";
+                  Record =:= "connectors" -> ?DESC("desc_connector");
 desc(_) ->
     undefined.
 

apps/emqx_connector/src/mqtt/emqx_connector_mqtt_schema.erl

@@ -49,7 +49,7 @@ fields("connector") ->
             })}
     , {server,
         sc(emqx_schema:ip_port(),
-           #{ default => "127.0.0.1:1883"
+           #{ required => true
             , desc => ?DESC("server")
             })}
     , {reconnect_interval, mk_duration(
@@ -117,7 +117,20 @@ fields("ingress") ->
         sc(binary(),
            #{ desc => ?DESC("ingress_hookpoint")
             })}
-    ] ++ common_inout_confs();
+
+    , {retain,
+       sc(hoconsc:union([boolean(), binary()]),
+          #{ default => <<"${retain}">>
+           , desc => ?DESC("retain")
+           })}
+
+    , {payload,
+       sc(binary(),
+          #{ default => <<"${payload}">>
+           , desc => ?DESC("payload")
+           })}
+    ];
+
 
 fields("egress") ->
     %% the message maybe sent from rules, in this case 'local_topic' is not necessary
@@ -128,16 +141,28 @@ fields("egress") ->
             })}
     , {remote_topic,
         sc(binary(),
-           #{ default => <<"${topic}">>
+           #{ required => true
             , validator => fun ?MODULE:non_empty_string/1
             , desc => ?DESC("egress_remote_topic")
             })}
     , {remote_qos,
         sc(qos(),
-           #{ default => <<"${qos}">>
+           #{ required => true
             , desc => ?DESC("egress_remote_qos")
             })}
-    ] ++ common_inout_confs();
+
+    , {retain,
+        sc(hoconsc:union([boolean(), binary()]),
+           #{ required => true
+            , desc => ?DESC("retain")
+            })}
+
+    , {payload,
+        sc(binary(),
+           #{ required => true
+            , desc => ?DESC("payload")
+            })}
+    ];
 
 fields("replayq") ->
     [ {dir,
@@ -157,13 +182,13 @@ fields("replayq") ->
     ].
 
 desc("connector") ->
-    "Generic configuration for the connector.";
+    ?DESC("desc_connector");
 desc("ingress") ->
     ingress_desc();
 desc("egress") ->
     egress_desc();
 desc("replayq") ->
-    "Queue messages in disk files.";
+    ?DESC("desc_replayq");
 desc(_) ->
     undefined.
 
@@ -197,19 +222,6 @@ is configured, then both the data got from the rule and the MQTT messages that m
 local_topic will be forwarded.
 ".
 
-common_inout_confs() ->
-    [ {retain,
-        sc(hoconsc:union([boolean(), binary()]),
-           #{ default => <<"${retain}">>
-            , desc => ?DESC("retain")
-            })}
-    , {payload,
-        sc(binary(),
-           #{ default => <<"${payload}">>
-            , desc => ?DESC("payload")
-            })}
-    ].
-
 qos() ->
     hoconsc:union([emqx_schema:qos(), binary()]).
 

apps/emqx_rule_engine/i18n/emqx_rule_engine_schema.conf

@@ -239,4 +239,102 @@ of the rule, then the string "undefined" is used.
                           }
                   }
 
+    desc_rule_engine {
+                   desc {
+                         en: """Configuration for the EMQX Rule Engine."""
+                         zh: """配置 EMQX 规则引擎。"""
+                        }
+                   label: {
+                           en: "Rule Engine Configuration"
+                           zh: "配置规则引擎"
+                          }
+                  }
+
+    desc_rules {
+                   desc {
+                         en: """Configuration for a rule."""
+                         zh: """配置规则"""
+                        }
+                   label: {
+                           en: "Rule Configuration"
+                           zh: "配置规则"
+                          }
+                  }
+
+    desc_builtin_output_republish {
+                   desc {
+                         en: """Configuration for a built-in output."""
+                         zh: """配置重新发布。"""
+                        }
+                   label: {
+                           en: "Republish Configuration"
+                           zh: "配置重新发布"
+                          }
+                  }
+
+    desc_builtin_output_console {
+                   desc {
+                         en: """Configuration for a built-in output."""
+                         zh: """配置打印到控制台"""
+                        }
+                   label: {
+                           en: "Output Console Configuration"
+                           zh: "配置打印到控制台"
+                          }
+                  }
+
+    desc_user_provided_function {
+                   desc {
+                         en: """Configuration for a built-in output."""
+                         zh: """配置用户函数"""
+                        }
+                   label: {
+                           en: "User Provid Function Configuration"
+                           zh: "配置用户函数"
+                          }
+                  }
+
+    desc_republish_args {
+                   desc {
+                         en: """The arguments of the built-in 'republish' output.<br>One can use variables in the args.<br>
+The variables are selected by the rule. For example, if the rule SQL is defined as following:
+<code>
+    SELECT clientid, qos, payload FROM "t/1"
+</code>
+Then there are 3 variables available: <code>clientid</code>, <code>qos</code> and
+<code>payload</code>. And if we've set the args to:
+<code>
+    {
+        topic = "t/${clientid}"
+        qos = "${qos}"
+        payload = "msg: ${payload}"
+    }
+</code>
+When the rule is triggered by an MQTT message with payload = `hello`, qos = 1,
+clientid = `Steve`, the rule will republish a new MQTT message to topic `t/Steve`,
+payload = `msg: hello`, and `qos = 1`."""
+                         zh: """
+内置 'republish' 动作的参数。<br>
+可以在参数中使用变量。<br>
+变量是规则中选择的字段。 例如规则 SQL 定义如下：
+<code>
+    SELECT clientid, qos, payload FROM "t/1"
+</code>
+然后有 3 个变量可用：<code>clientid</code>、<code>qos</code> 和 <code>payload</code>。 如果我们将参数设置为：
+<code>
+    {
+        topic = "t/${clientid}"
+        qos = "${qos}"
+        payload = "msg: ${payload}"
+    }
+</code>
+当收到一条消息 payload = `hello`, qos = 1, clientid = `Steve` 时，将重新发布一条新的 MQTT 消息到主题 `t/Steve`
+消息内容为 payload = `msg: hello`, and `qos = 1"""
+                        }
+                   label: {
+                           en: "Republish Args"
+                           zh: "重新发布参数"
+                          }
+                  }
+
 }

apps/emqx_rule_engine/src/emqx_rule_engine_schema.erl

@@ -81,7 +81,8 @@ fields("builtin_output_console") ->
 fields("user_provided_function") ->
     [ {function, sc(binary(),
         #{ desc => ?DESC("user_provided_function_function")
-        , example => "module:function"
+         , required => true
+         , example => "module:function"
         })}
     , {args, sc(map(),
         #{ desc => ?DESC("user_provided_function_args")
@@ -113,34 +114,17 @@ fields("republish_args") ->
     ].
 
 desc("rule_engine") ->
-    "Configuration for the EMQX Rule Engine.";
+    ?DESC("desc_rule_engine");
 desc("rules") ->
-    "Configuration for a rule.";
+    ?DESC("desc_rules");
 desc("builtin_output_republish") ->
-    "Configuration for a built-in output.";
+    ?DESC("desc_builtin_output_republish");
 desc("builtin_output_console") ->
-    "Configuration for a built-in output.";
+    ?DESC("desc_builtin_output_console");
 desc("user_provided_function") ->
-    "Configuration for a built-in output.";
+    ?DESC("desc_user_provided_function");
 desc("republish_args") ->
-    "The arguments of the built-in 'republish' output.<br>"
-    "One can use variables in the args.<br>\n"
-    "The variables are selected by the rule. For example, if the rule SQL is defined as following:\n"
-    "<code>\n"
-    "    SELECT clientid, qos, payload FROM \"t/1\"\n"
-    "</code>\n"
-    "Then there are 3 variables available: <code>clientid</code>, <code>qos</code> and\n"
-    "<code>payload</code>. And if we've set the args to:\n"
-    "<code>\n"
-    "    {\n"
-    "        topic = \"t/${clientid}\"\n"
-    "        qos = \"${qos}\"\n"
-    "        payload = \"msg: ${payload}\"\n"
-    "    }\n"
-    "</code>\n"
-    "When the rule is triggered by an MQTT message with payload = `hello`, qos = 1,\n"
-    "clientid = `Steve`, the rule will republish a new MQTT message to topic `t/Steve`,\n"
-    "payload = `msg: hello`, and `qos = 1`.";
+    ?DESC("desc_republish_args");
 desc(_) ->
     undefined.