可以使用Watcher商业产品为并定义如下表:
PUT _watcher/watch/transaction_alert
{
"trigger": {
"schedule": {
"interval": "1m"
}
},
"input": {
"search": {
"request": {
"indices": "transactions",
"types": "transaction",
"body": {
"query": {
"match_all": {}
},
"size": 0,
"aggs": {
"groupBy": {
"terms": {
"field": "CustomerName"
},
"aggs": {
"points_sum": {
"stats": {
"field": "TransactionAmount"
}
}
}
}
}
}
}
}
},
"condition": {
"script": {
"inline": "return ctx.payload.aggregations.groupBy.buckets.findAll{ cust -> cust.points_sum.avg >= 200}"
}
},
"actions": {
"send_email": {
"email": {
"to": "<username>@<domainname>",
"subject": "Customer Notification - Transaction > 200",
"body": "The attached customers have a transaction average above $200"
"attachments" : {
"data.yml" : {
"data" : {
"format" : "yaml"
}
}
}
}
}
}
}
UPDATE
综上所述:
还有另一种更简单和更便宜的方式来实现这个使用Logstash。即使elasticsearch
输入插件不支持聚合,也可以使用输入插件http_poller
以定期向Elasticsearch发送聚合查询。然后使用过滤器,您可以检查是否达到了所需的阈值,最后,如果使用email
输出插件,则通过电子邮件通知某人。
配置基本上是这样的(请注意,您的上述汇总查询需要使用URL编码并使用source=...
parameter发送给ES)。另外请注意,我已经修改您的查询按照points_sum.avg
(DESC)
input {
http_poller {
urls => {
test1 => 'http://localhost:9200/your-index/_search?source=%7B%22query%22%3A%7B%22match_all%22%3A%7B%7D%7D%2C%22aggs%22%3A%7B%22groupBy%22%3A%7B%22terms%22%3A%7B%22field%22%3A%22CustomerName%22%2C%22order%22%3A%7B%22points_sum.avg%22%3A%22desc%22%7D%7D%2C%22aggs%22%3A%7B%22points_sum%22%3A%7B%22stats%22%3A%7B%22field%22%3A%22TransactionAmount%22%7D%7D%7D%7D%7D%2C%22size%22%3A0%7D'
}
# checking every 10 seconds
interval => 10
codec => "json"
}
}
filter {
split {
field => "[aggregations][groupBy][buckets]"
}
}
output {
if [aggregations][groupBy][buckets][points_sum][avg] > 200 {
email {
to => "<username>@<domainname>"
subject => "Customer Notification - Transaction > 200",
body => "The customer %{[aggregations][groupBy][buckets][key]} has a transaction average above $200"
}
}
}
同意桶进行排序,这是一个非常简单的实现,但它应该是工作,你可以建立在它,使其更聪明与Logstash和你的想象力的极限是天空;-)
更新2
另一个node.js的工具调用elasticwatch也被利用来做到这一点。
来源
2016-09-29 04:17:26
Val
你能做到这一点使用[观察家](https://www.elastic.co/videos/watcher-lab-using-elasticsearch-aggregations-in-your-watch),但需要[订阅](https://开头www.elastic.co/guide/en/watcher/current/license-management.html) – keety