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truefalsenull
  • 数值匹配是按照字符串的形式进行比较的。例如,300、300.0和3.0e2不相等的。
  • 事件模式只支持或的语义。

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://taobao.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://taobao.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://taobao.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://taobao.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
    }
}

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://taobao.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://taobao.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://taobao.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://taobao.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initializingx-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://taobao.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://taobao.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://taobao.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
    }
}

以下示例事件模式只匹配state不是stoppedoverloaded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://taobao.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://taobao.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://taobao.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"
    }
}

以下示例事件模式只匹配x-limit不是100200300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://taobao.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://taobao.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://taobao.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
    }
}

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://taobao.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://taobao.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://taobao.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"
    }
}

以下示例事件模式只匹配source不是云视频会议的事件。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://taobao.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.aliyuncvc"
            ]
        }
    ]
}
{
    "id":"7adc8c1a-645d-4476-bdef-5d6fb57f****",
    "source":"acs.oss",
    "specversion":"1.0",
    "type":"oss:ObjectCreated:PostObject",
    "datacontenttype":"application/json",
    "dataschema":"http://taobao.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":{
        "meetingName":"marketing-meeting",
        "action":"meeting_start",
        "time":1590592494070,
        "meetingUUID":"hz-20864c8f-b10d-45cd-9935-884bca1b****"
    },
    "id":"45ef4dewdwe1-7c35-447a-bd93-fab****",
    "source":"acs.aliyuncvc",
    "specversion":"1.0",
    "subject":"acs.aliyuncvc:cn-hangzhou:<yourAccountId>:215672",
    "time":"2020-07-21 20:22:01.961000",
    "type":"aliyuncvc:MeetingEvent:MeetingStateEvent"
}

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://taobao.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."
            }
        }
    ]
}

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或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://taobao.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://taobao.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://taobao.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
    }
}
注意 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-ip10.0.0.0/24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://taobao.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://taobao.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://taobao.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"
    }
}
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://taobao.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://taobao.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://taobao.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"
    }
}

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://taobao.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://taobao.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://taobao.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://taobao.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
   }
}

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"
   }
}
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。