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事件模式

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事件模式是事件总线EventBridge用来过滤相关事件的模式定义。事件总线EventBridge通过事件模式过滤事件并将事件路由到事件目标，事件模式必须和匹配的事件具有相同的结构。本文介绍事件模式的常用类型。

注意事项

事件模式匹配的原则如下：

  • 事件必须包含事件模式中列出的所有字段名，且事件模式里的字段名必须和事件中的字段名具有相同嵌套结构。

  • 事件模式是逐个字符精确匹配的 ，需注意大小写，匹配过程中不会对字符串进行任何标准化的操作。

  • 要匹配的值遵循JSON规则：用引号引起来的字符串、数字以及不带引号的关键字true、false和null。

  • 事件模式支持OR的语义，事件模式匹配中各个Key支持AND语义，Key的Value值支持数组OR的语义。

指定值匹配

您可以指定某个字段的值进行匹配。例如，以下示例事件模式只匹配source是阿里云对象存储OSS的事件。下表介绍事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}
{
    "source":[
        "acs.oss"
    ]
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}

前缀匹配

您可以指定某个字段的值的前缀进行匹配。例如，以下示例事件模式只匹配source字段以acs.开头的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}
{
    "source":[
        {
            "prefix":"acs."
        }
    ]
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}

包含匹配

您可以指定某个字段包含特定字段值进行匹配。例如，在以下示例一，事件模式只匹配type中包含Normal的事件。在以下示例二，事件模式匹配type中包含Normal或者Error的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

示例一：匹配"type"字段包含"Normal"的事件

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"UserNormalEvent",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}
{
  "type":[
    {
      "contains": "Normal"
    }
  ]
}

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"UserNormalEvent",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"UserErrorEvent",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.png",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}

无

示例二：匹配"type"字段包含"Normal"或者"Error"的事件

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"UserNormalEvent",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}
{
  "type":[
    {
      "contains": "Normal"
    },
    {
      "contains": "Error"
    }
  ]
}

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"UserNormalEvent",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"UserErrorEvent",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.png",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"UserErrorEvent",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.png",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"UserOtherEvent",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.png",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}

无

后缀匹配

您可以指定某个字段的值的后缀进行匹配。例如，以下示例事件模式只匹配subject中前缀为acs:oss:cn-hangzhou:1234567:xls-papk/、后缀为.jpg或后缀为.txt的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}
{
    "subject":[
        {
            "prefix":"acs:oss:cn-hangzhou:1234567:xls-papk/"
        },
        {
            "suffix":".txt"
        },
        {
            "suffix":".jpg"
        }
    ]
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.png",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.png",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}

除外匹配

您可以指定某个字段除了提供的值之外的任何值进行匹配。您可以将anything-but与字符串和数值一起使用。例如，以下示例事件模式只匹配state不是initializing和x-limit不是123的所有事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

以下模式显示单个anything-but匹配，首先是字符串，然后是数值。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "state":"running",
        "x-limit":456
    }
}
{
    "data":{
        "state":[
            {
                "anything-but":"initializing"
            }
        ],
        "x-limit":[
            {
                "anything-but":123
            }
        ]
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "state":"running",
        "x-limit":456
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "x-limit":456
    }
}

无

以下示例事件模式只匹配state不是stopped和overloaded的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "state":"terminated"
    }
}
{
    "data":{
        "state":[
            {
                "anything-but":[
                    "stopped",
                    "overloaded"
                ]
            }
        ]
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "state":"terminated"
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "state":"stopped"
    }
}

无

以下示例事件模式只匹配x-limit不是100、200和300的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "x-limit":456
    }
}
{
    "data":{
        "x-limit":[
            {
                "anything-but":[
                    100,
                    200,
                    300
                ]
            }
        ]
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "x-limit":456
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "x-limit":200
    }
}

无

以下示例事件模式只匹配state前缀不是init的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "state":"pending"
    }
}
{
    "data":{
        "state":[
            {
                "anything-but":{
                    "prefix":"init"
                }
            }
        ]
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "state":"pending"
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "state":"initializing"
    }
}

无

以下示例事件模式只匹配source不是云服务器 ECS的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "x-limit":456
    }
}
{
    "source":[
        {
            "anything-but":[
                "acs.ecs"
            ]
        }
    ]
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "x-limit":456
    }
}
{
    "id": "45ef4dewdwe1-7c35-447a-bd93-fab****",
    "source": "acs.ecs",
    "specversion": "1.0",
    "subject": "acs.ecs:cn-hangzhou:123456789098****:215672",
    "time": "2020-11-19T21:04:41Z",
    "type": "ecs:Disk:ConvertToPostpaidCompleted",
    "aliyunaccountid": "123456789098****",
    "aliyunpublishtime": "2020-11-19T21:04:42Z",
    "aliyuneventbusname": "default",
    "aliyunregionid": "cn-hangzhou",
    "aliyunpublishaddr": "172.25.XX.XX",
    "data": {
        "result": "accomplished",
        "diskName": "e2e-ecs-xxxxxxxx",
        "diskId": "d-gx3hn2vc0fxxxxxxxx"
    }
}

无

以下示例事件模式只匹配source不是阿里云服务的事件，即匹配您的自定义应用发出的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "x-limit":456
    }
}
{
    "source":[
        {
            "anything-but":{
                "prefix":"acs."
            }
        }
    ]
}

无

数值匹配

您可以指定某个字段的数值或范围。例如，以下示例事件模式只匹配c-count大于0小于等于5、d-count小于10和x-limit等于301.8的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "c-count":5,
        "d-count":7,
        "x-limit":301.8
    }
}
{
    "data":{
        "c-count":[
            {
                "numeric":[
                    ">",
                    0,
                    "<=",
                    5
                ]
            }
        ],
        "d-count":[
            {
                "numeric":[
                    "<",
                    10
                ]
            }
        ],
        "x-limit":[
            {
                "numeric":[
                    "=",
                    301.8
                ]
            }
        ]
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "c-count":5,
        "d-count":7,
        "x-limit":301.8
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "c-count":5,
        "d-count":7,
        "x-limit":300
    }
}

无

重要

数值匹配只有在值为JSON数值时才生效，并且取值范围仅限于-1.0e9到+1.0e9，精确到15位数字，小数点后6位。

IP地址匹配

您可以指定data中字段的IP地址。例如，以下示例事件模式中只匹配source-ip为10.0.0.0/24的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "source-ip":"10.0.0.123"
    }
}
{
    "data":{
        "source-ip":[
            {
                "cidr":"10.0.0.0/24"
            }
        ]
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "source-ip":"10.0.0.123"
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "source-ip":"192.168.0.123"
    }
}

无

说明

IP地址目前只支持IPv4地址。

多模式匹配

您可以将多个规则组合为更复杂的事件模式。例如，以下示例事件模式中结合了前缀匹配、除外匹配、IP地址匹配和数值匹配，您可以通过设置多模式匹配精确过滤您想获取的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "c-count":5,
        "d-count":7,
        "x-limit":301.8,
        "state":"pending",
        "source-ip":"10.0.0.123"
    }
}
{
    "source":[
        {
            "prefix":"acs."
        }
    ],
    "data":{
        "state":[
            {
                "anything-but":"initializing"
            }
        ],
        "source-ip":[
            {
                "cidr":"10.0.0.0/24"
            }
        ],
        "c-count":[
            {
                "numeric":[
                    ">",
                    0,
                    "<=",
                    5
                ]
            }
        ],
        "d-count":[
            {
                "numeric":[
                    "<",
                    10
                ]
            }
        ],
        "x-limit":[
            {
                "anything-but":[
                    100,
                    200,
                    300
                ]
            }
        ]
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "c-count":5,
        "d-count":7,
        "x-limit":301.8,
        "state":"pending",
        "source-ip":"10.0.0.123"
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "c-count":5,
        "d-count":7,
        "x-limit":301.8,
        "state":"initializing",
        "source-ip":"192.168.0.123"
    }
}

无

匹配数组

事件模式中每个字段的值均为一个包含一个或多个值的数组，如果数组中的任一值匹配事件中的值，则模式匹配。如果事件中的值也是数组，只要与事件模式的数组的交集不是空集，则模式匹配。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}
{
    "subject":[
        "acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
        "acs:oss:cn-hangzhou:1112223:xls-papk/game_apk/123.jpg",
        "acs:oss:cn-hangzhou:4455667:xls-papk/game_apk/123.jpg"
    ]
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":[
        "acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
        "acs:acs.aliyuncvc:cn-hangzhou:<yourAccountId>:215672"
    ],
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":[
        "acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
        "acs:acs.aliyuncvc:cn-hangzhou:<yourAccountId>:215672"
    ],
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100
    }
}

匹配空值

您可以创建一个事件模式与含有null值或空字符串的事件进行匹配。例如，以下示例模式匹配eventVersion值为空字符串的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
  "version": "0",
  "id": "7adc8c1a-645d-4476-bdef-5d6fb57f****",
  "datacontenttype": "Instance Launch Successful",
  "source": "acs.oss",
  "account": "123456789012",
  "time": "2015-11-11T21:31:47Z",
  "region": "cn-hangzhou",
  "resources": [
   ],
  "data": {
    "eventVersion": "",
    "responseElements": null
   }
}
{
    "data":{
        "eventVersion":[
            ""
        ]
    }
}
{
  "version": "0",
  "id": "7adc8c1a-645d-4476-bdef-5d6fb57f****",
  "datacontenttype": "Instance Launch Successful",
  "source": "acs.oss",
  "account": "123456789012",
  "time": "2015-11-11T21:31:47Z",
  "region": "cn-hangzhou",
  "resources": [
   ],
  "data": {
    "eventVersion": "",
    "responseElements": null
   }
}
{
  "version": "0",
  "id": "7adc8c1a-645d-4476-bdef-5d6fb57f****",
  "datacontenttype": "Instance Launch Successful",
  "source": "acs.oss",
  "account": "123456789012",
  "time": "2015-11-11T21:31:47Z",
  "region": "cn-hangzhou",
  "resources": [
   ],
  "data": {
    "eventVersion": "1.0",
    "responseElements": null
   }
}

无

以下示例事件模式只匹配responseElements值为空值的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
  "version": "0",
  "id": "7adc8c1a-645d-4476-bdef-5d6fb57f****",
  "datacontenttype": "Instance Launch Successful",
  "source": "acs.oss",
  "time": "2015-11-11T21:31:47Z",
  "region": "cn-hangzhou",
  "resources": [
   ],
  "data": {
    "eventVersion": "",
    "responseElements": null
   }
}
{
    "data":{
        "responseElements":[
            null
        ]
    }
}
{
  "version": "0",
  "id": "7adc8c1a-645d-4476-bdef-5d6fb57f****",
  "datacontenttype": "Instance Launch Successful",
  "source": "acs.oss",
  "time": "2015-11-11T21:31:47Z",
  "region": "cn-hangzhou",
  "resources": [
   ],
  "data": {
    "eventVersion": "",
    "responseElements": null
   }
}
{
  "version": "0",
  "id": "7adc8c1a-645d-4476-bdef-5d6fb57f****",
  "datacontenttype": "Instance Launch Successful",
  "source": "acs.oss",
  "account": "123456789012",
  "time": "2015-11-11T21:31:47Z",
  "region": "cn-hangzhou",
  "resources": [
   ],
  "data": {
    "eventVersion": "",
    "responseElements": "lss"
   }
}

无

说明

进行模式匹配时，null值和空字符串是不等同的。用于匹配空字符串的模式不会匹配到null值。

存在匹配

您可以指定data中存在或不存在某个字段。例如，以下示例匹配不包含state字段的事件。下表介绍示例事件从事件源发出经过事件模式过滤的过程。

从事件源接收的事件

事件模式

模式过滤后的事件

{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
    }
}
{
    "data":{
        "state":[
            {
               "exists": false
            }
         ]
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
    }
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://example.com/test.json",
    "subject":"acs:oss:cn-hangzhou:1234567:xls-papk/game_apk/123.jpg",
    "time":"2020-08-17T16:04:46.149Asia/Shanghai",
    "data":{
        "name":"test",
        "scope":100,
        "state":"terminated"
    }
}

无

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