# Logstashのfilterについて mutateの記載数 を減らしたい、デフォルトをintegerにする方法

**URL:** https://discuss.elastic.co/t/logstash-filter-mutate-integer/181508
**Category:** Logstash
**Created:** [May 17, 2019, 5:05am UTC](https://discuss.elastic.co/t/logstash-filter-mutate-integer/181508 "2019-05-17T05:05:24Z")
**Posts on this page:** 4
**Page:** 1

<div class="post-metadata">

### Author: ![tomomr](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tomomr/32/41951_2.png) [@tomomr](https://discuss.elastic.co/u/tomomr)
#### Post date: [May 17, 2019, 5:05am UTC](https://discuss.elastic.co/t/logstash-filter-mutate-integer/181508/1 "2019-05-17T05:05:24Z")

</div>

はじめまして

Logstashについて、ぜひコメントをお願いします。

フィルタで以下のようにすると、price\_eurの属性をintegerとすることは  
理解できたのですが、

filter {  
csv {  
separator =\> ","  
columns =\> ["price\_eur"]  
}  
mutate {convert =\> ["price\_eur", "integer"] }

```
    }

```

50個ほどあるデータのほとんどがintegerの場合、  
defaultをintegerとして、残りを文字列としたいのです。

もしそのようなことが可能であれば、設定方法を教えてください。  
よろしくお願いいたします。

---

<div class="post-metadata">

### Author: ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [May 17, 2019, 12:35pm UTC](https://discuss.elastic.co/t/logstash-filter-mutate-integer/181508/2 "2019-05-17T12:35:55Z")

</div>

```
filter {
    csv { source => "message" }
    ruby {
        code => '
            event.to_hash.each { |k, v|
                if v.to_i.to_s == v
                    event.set(k, v.to_i)
                end
            }
        '
    }
}

```

Does that help?

---

<div class="post-metadata">

### Author: ![tomomr](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tomomr/32/41951_2.png) [@tomomr](https://discuss.elastic.co/u/tomomr)
#### Post date: [May 20, 2019, 4:54am UTC](https://discuss.elastic.co/t/logstash-filter-mutate-integer/181508/3 "2019-05-20T04:54:17Z")

</div>

> [@Badger](#):
>
> event.set(k, v.to\_i)

Hi Badger,  
Thank you for your prompt reply.  
It will be effective for me.

But I do not have any knowledge of Ruby. But I understood "v.to\_i" change value to integer. It is useful for my case.  
Anyway, Can I change default value of receiving data as integer in logstash?

It will be better for me.

Thanks,  
Tomo.

---

<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: [June 17, 2019, 4:54am UTC](https://discuss.elastic.co/t/logstash-filter-mutate-integer/181508/4 "2019-06-17T04:54:18Z")

</div>

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