# \[SOLVED\]How to retrive the @value from message?

**URL:** <https://discuss.elastic.co/t/solved-how-to-retrive-the-value-from-message/46111>\
**Category:** Logstash\
**Created:** [April 1, 2016, 11:26pm UTC](https://discuss.elastic.co/t/solved-how-to-retrive-the-value-from-message/46111 "2016-04-01T23:26:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![stefansaye](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@stefansaye](https://discuss.elastic.co/u/stefansaye)\
**Post date:** [April 1, 2016, 11:26pm UTC](https://discuss.elastic.co/t/solved-how-to-retrive-the-value-from-message/46111/1 "2016-04-01T23:26:38Z")

</div>

Hi

i want to retrive the value from snmptrap input ,

"message" =\> "#\<SNMP::SNMPv1\_Trap:0x4ab319a9 @enterprise=[1.3.6.1.4.1.9.9.187], @timestamp=#\<SNMP::TimeTicks:0x6d960737 @value=2612151602\>, @varbind\_list=[#\<SNMP::VarBind:0x7d194c81 @name=[1.3.6.1.4.1.9.9.187.1.2.5.1.17.32.1.14.16.255.255.17.0.0.0.0.0.0.0.0.2], @value="\x00\x00"\>, #\<SNMP::VarBind:0x2fb57cda @name=[1.3.6.1.4.1.9.9.187.1.2.5.1.3.32.1.14.16.255.255.17.0.0.0.0.0.0.0.0.2], @value=#\<SNMP::Integer:0x72c769a4 @value=1\>\>, #\<SNMP::VarBind:0x334c21b1 @name=[1.3.6.1.4.1.9.9.187.1.2.5.1.28.32.1.14.16.255.255.17.0.0.0.0.0.0.0.0.2], @value=""\>, #\<SNMP::VarBind:0x4060e1d @name=[1.3.6.1.4.1.9.9.187.1.2.5.1.29.32.1.14.16.255.255.17.0.0.0.0.0.0.0.0.2], @value=#\<SNMP::Integer:0xd1e1eb @value=3\>\>], @specific\_trap=7, @source\_ip="1.2.3.4", @agent\_addr=#\<SNMP::IpAddress:0x4992221c @value="\xC0\xA8\v\e"\>, @generic\_trap=6\>"

i want to retrive the value @source\_ip from message , i try to use  
mutate {  
add\_field =\> { "source\_ip" =\>["@source\_ip"] }  
}  
to get the @souce\_ip and for the new field , but still can't get the value ,  
If anyone knows how to do with it , please help. Thanks.

---

<div class="post-metadata">

**Author:** ![Alex\_6](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alex_6/32/1330_2.png) [@Alex\_6](https://discuss.elastic.co/u/Alex_6)\
**Post date:** [April 8, 2016, 9:57am UTC](https://discuss.elastic.co/t/solved-how-to-retrive-the-value-from-message/46111/2 "2016-04-08T09:57:36Z")

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The Mutate filter's [add\_field](https://www.elastic.co/guide/en/logstash/current/plugins-filters-mutate.html#plugins-filters-mutate-add_field) uses a different syntax.

```
mutate {
  add_field => { "source_ip" => "%{@source_ip}" } 
}

```

Alternatively you could also just rename the field so that you don't have the @source\_ip at the end too.

```
mutate {
  rename => { "@source_ip" => "source_ip" }
}
```

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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:** [July 6, 2017, 5:03am UTC](https://discuss.elastic.co/t/solved-how-to-retrive-the-value-from-message/46111/3 "2017-07-06T05:03:08Z")

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