规则
查询规则引擎的动作
GET /api/v4/rules/{rule_id}
获取某个规则的详情,包括规则的 SQL、Topics 列表、动作列表等。还会返回当前规则和动作的统计指标的值。
Path Parameters:
Name | Type | Required | Description |
---|---|---|---|
rule_id | String | False | 可选,Rule ID。如不指定 rule_id 则 以数组形式返回所有已创建的规则 |
Success Response Body (JSON):
Name | Type | Description |
---|---|---|
code | Integer | 0 |
data | Object | 规则对象 |
- data.id | String | Rule ID |
- data.rawsql | String | SQL 语句,与请求中的 rawsql 一致 |
- data.for | String | Topic 列表,表示哪些 topic 可以匹配到此规则 |
- data.metrics | Array | 统计指标,具体可参看 Dashboard 上的 Rule Metrics |
- data.description | String | 规则的描述信息,与请求中的 description 一致 |
- data.actions | Array | 动作列表 |
- data.actions[0].id | String | Action ID |
- data.actions[0].params | Object | 动作参数,与请求中的 actions.params 一致 |
- data.actions[0].name | String | 动作名字,与请求中的 actions.name 一致 |
- data.actions[0].metrics | Array | 统计指标,具体可参看 Dashboard 上的 Rule Metrics |
POST /api/v4/rules
创建规则,返回规则 ID。
Parameters (json):
Name | Type | Required | Description |
---|---|---|---|
rawsql | String | True | 规则的 SQL 语句 |
actions | Array | True | 动作列表 |
- actions[0].name | String | True | 动作名称 |
- actions[0].params | Object | True | 动作参数。参数以 key-value 形式表示。 详情可参看添加规则的示例 |
description | String | False | 可选,规则描述 |
Success Response Body (JSON):
Name | Type | Description |
---|---|---|
code | Integer | 0 |
data | Object | 创建成功的规则对象,包含 Rule ID |
- data.id | String | Rule ID |
- data.rawsql | String | SQL 语句,与请求中的 rawsql 一致 |
- data.for | String | Topic 列表,表示哪些 topic 可以匹配到此规则 |
- data.metrics | Array | 统计指标,具体可参看 Dashboard 上的 Rule Metrics |
- data.description | String | 规则的描述信息,与请求中的 description 一致 |
- data.actions | Array | 动作列表,每个动作是一个 Object |
- data.actions[0].id | String | Action ID |
- data.actions[0].params | Object | 动作参数,与请求中的 actions.params 一致 |
- data.actions[0].name | String | 动作名字,与请求中的 actions.name 一致 |
- data.actions[0].metrics | Array | 统计指标,具体可参看 Dashboard 上的 Rule Metrics |
DELETE /api/v4/rules/{rule_id}
删除规则。
Parameters: 无
Success Response Body (JSON):
Name | Type | Description |
---|---|---|
code | Integer | 0 |
Examples:
添加一个规则,对于所有匹配到主题 “t/a” 的消息,打印其规则运行参数。
$ curl -XPOST -d '{
"rawsql": "select * from \"t/a\"",
"actions": [{
"name": "inspect",
"params": {
"a": 1
}
}],
"description": "test-rule"
}' --basic -u admin:public 'http://localhost:8081/api/v4/rules'
{"data":{"rawsql":"select * from \"t/a\"","metrics":[{"speed_max":0,"speed_last5m":0.0,"speed":0.0,"node":"emqx@127.0.0.1","matched":0}],"id":"rule:7fdb2c9e","for":["t/a"],"enabled":true,"description":"test-rule","actions":[{"params":{"a":1},"name":"inspect","metrics":[{"success":0,"node":"emqx@127.0.0.1","failed":0}],"id":"inspect_1582434715354188116"}]},"code":0}
使用规则 ID 获取刚才创建的规则详情:
$ curl --basic -u admin:public 'http://localhost:8081/api/v4/rules/rule:7fdb2c9e'
{"data":{"rawsql":"select * from \"t/a\"","metrics":[{"speed_max":0,"speed_last5m":0.0,"speed":0.0,"node":"emqx@127.0.0.1","matched":0}],"id":"rule:7fdb2c9e","for":["t/a"],"enabled":true,"description":"test-rule","actions":[{"params":{"a":1},"name":"inspect","metrics":[{"success":0,"node":"emqx@127.0.0.1","failed":0}],"id":"inspect_1582434715354188116"}]},"code":0}
获取所有的规则,注意返回值里的 data 是个规则对象的数组:
$ curl --basic -u admin:public 'http://localhost:8081/api/v4/rules'
{"data":[{"rawsql":"select * from \"t/a\"","metrics":[{"speed_max":0,"speed_last5m":0.0,"speed":0.0,"node":"emqx@127.0.0.1","matched":0}],"id":"rule:7fdb2c9e","for":["t/a"],"enabled":true,"description":"test-rule","actions":[{"params":{"a":1},"name":"inspect","metrics":[{"success":0,"node":"emqx@127.0.0.1","failed":0}],"id":"inspect_1582434715354188116"}]}],"code":0}
删除规则:
$ curl -XDELETE --basic -u admin:public 'http://localhost:8081/api/v4/rules/rule:7fdb2c9e'
{"code":0}