# How to have multiple ids in elapsed filter?

**URL:** <https://discuss.elastic.co/t/how-to-have-multiple-ids-in-elapsed-filter/168524>\
**Category:** Logstash\
**Created:** [February 15, 2019, 6:30am UTC](https://discuss.elastic.co/t/how-to-have-multiple-ids-in-elapsed-filter/168524 "2019-02-15T06:30:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![shwesinhan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/shwesinhan/32/78663_2.png) [@shwesinhan](https://discuss.elastic.co/u/shwesinhan)\
**Post date:** [February 15, 2019, 6:30am UTC](https://discuss.elastic.co/t/how-to-have-multiple-ids-in-elapsed-filter/168524/1 "2019-02-15T06:30:07Z")

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hi there!

i use elapsed filter to have **elapsed time of round txn** and **dropout count**.  
now i can only add one unique\_id\_field, actually it's not enough for my customization  
is there anyway to add multiple ids in elapsed filter?

i would appreciate every single advice 😊

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<div class="post-metadata">

**Author:** ![shwesinhan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/shwesinhan/32/78663_2.png) [@shwesinhan](https://discuss.elastic.co/u/shwesinhan)\
**Post date:** [February 15, 2019, 8:08am UTC](https://discuss.elastic.co/t/how-to-have-multiple-ids-in-elapsed-filter/168524/2 "2019-02-15T08:08:52Z")

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i found my way and let me share it 🙂

i create one field (field1+field2) at grok filter  
and when reach to elapsed filter i split it into two fields  
here is sample code

```
if "ReqTestPage123" in [message] {	
	grok {
		# txn start
		break_on_match => false					
		match => { "message" => ["^(?<timestamp>\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2},\d{1,3}).*?(?<threadno>\d+).*?%{WORD:log_level}.*?ReqTestPage123\s{0,}::\s+%{WORD:session_id}{0,1}\s{0,}::", "\|inv_no=%{DATA:invoice_id}\|mid=%{DATA:mid}\|"]}			
		add_field => { "log_type" => "request" }		
		add_field => { "dropout_trace_id" => "%{mid}+%{invoice_id}" }					
		add_tag => ["req"]
	}	
}
else if "ResTestPage123" in [message] {					
	grok {    		
		match => { "message" => ["^(?<timestamp>\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2},\d{1,3}).*?(?<threadno>\d+).*?%{WORD:log_level}.*?ResTestPage123\s{0,}::\s+%{WORD:session_id}{0,1}\s{0,}::", "\|inv_no=%{DATA:invoice_id}\|mid=%{DATA:mid}\|"]}			
		add_field => { "log_type" => "response" }		
		add_field => { "dropout_trace_id" => "%{mid}+%{invoice_id}" }					
		add_tag => ["res"]
	}	
}
elapsed {
	start_tag => "req"
	end_tag => "res" 
	unique_id_field => "dropout_trace_id"	
	periodic_flush => true
	timeout => 10
	add_tag => ["dropout"]			
}	
if ![message] {
	if [dropout_trace_id] {
		mutate { 
			split => { "dropout_trace_id" => "+" } 
			add_field => { "mid" => "%{[dropout_trace_id][0]}" }
			add_field => { "invoice_id" => "%{[dropout_trace_id][1]}" }	
			remove_field => ["dropout_trace_id"]
		}	
	}			
}
```

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 15, 2019, 8:09am UTC](https://discuss.elastic.co/t/how-to-have-multiple-ids-in-elapsed-filter/168524/3 "2019-03-15T08:09:04Z")

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