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5246301729
* [DOCS] Migrates Canvas function docs to Kibana docs * [DOCS] Add docs for TinyMath Canvas functions
210 lines
3.6 KiB
Text
210 lines
3.6 KiB
Text
[[canvas-server-functions]]
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=== Canvas server functions
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beta[]These functions can only execute on the server. This may be for performance
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or security reasons, or because the function uses an API only available on the
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{kib} server. If the expression is executing in the browser, it will transfer to
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the server when it hits one of these functions.
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A *** denotes a required argument.
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[float]
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=== demodata
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A mock data set that includes project CI times with usernames, countries, and run phases.
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*Accepts:* filter
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[cols="3*^<"]
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|===
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s|Argument
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s|Type
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s|Description
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|_Unnamed_ (Alias: `type`)
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|string
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|The name of the demo data set to use (default: `ci`)
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|===
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*Returns:* datatable
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[float]
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=== esdocs
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Queries {es} and gets back raw documents. Specify the fields you want to receive,
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especially if you are asking for a lot of rows.
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*Accepts:* filter
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[cols="3*^<"]
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|===
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s|Argument
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s|Type
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s|Description
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|index
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|string
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|Specify an index pattern, for example, "logstash-*" (default is `_all`)
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|_Unnamed_ (Aliases: `query`, `q`)
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|string
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|A Lucene query string (default: `_index:.kibana`)
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|sort
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|string
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|Sort directions as "field, direction", for example, "@timestamp, desc" or "bytes, asc"
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|fields
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|string
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|Comma separated list of fields. Fewer fields will perform better
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|metaFields
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|string
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|Comma separated list of meta fields, for example, "_index,_type"
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|count
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|number
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|The number of docs to pull back. Smaller numbers perform better (default: `100`)
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|===
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*Returns:* datatable
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[float]
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=== escount
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Queries {es} for a count of the number of hits matching a query.
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*Accepts:* filter
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[cols="3*^<"]
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|===
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s|Argument
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s|Type
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s|Description
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|index
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|string
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|Specify an index pattern, for example, "logstash-*" (default: `all`)
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|_Unnamed_ (Alias: `query`, `q`)
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|string
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|A Lucene query string (default: `"-_index:.kibana"`)
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|===
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*Returns:* number
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[float]
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=== essql
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Specifies an {es} SQL.
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*Accepts:* filter
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[cols="3*^<"]
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|===
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s|Argument
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s|Type
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s|Description
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|_Unnamed_* (Alias: `query`, `q`)
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|string
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|An SQL query
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|count
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|number
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|The default is `1000`
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|===
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*Returns:* datatable
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[float]
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=== pointseries
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Turns a datatable into a point series model. Currently Canvas differentiates measure
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from dimensions by looking for a <<canvas-tinymath-functions, Tiny Math function>>. If you enter a TinyMath
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expression in your argument, Canvas treats that argument as a measure. Otherwise, it
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is a dimension. Dimensions are combined to create unique keys. Measures are
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then deduplicated by those keys using the specified TinyMath function.
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*Accepts:* datatable
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[cols="3*^<"]
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|===
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s|Argument
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s|Type
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s|Description
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|x
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|string
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|The values along the X-axis
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|y
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|string
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|The values along the Y-axis
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|color
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|string
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|An expression to use in determining the mark's color
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|size
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|string
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|For elements that support it, the size of the marks
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|text
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|string
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|For use in charts that support it, the text to show in the mark
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|===
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*Returns:* pointseries
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[float]
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=== server
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Forces the interpreter to return to the server.
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*Accepts:* Anything or nothing
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*Returns:* Depends on your input and arguments
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[float]
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=== timelion
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Uses Timelion to extract one or more time series from many sources.
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*Accepts:* filter
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[cols="3*^<"]
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|===
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s|Argument
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s|Type
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s|Description
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|_Unnamed_ (Aliases: `query`, `q`)
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|string
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|A Timelion query (default: `".es(*)"`)
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|interval
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|string
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|Bucket interval for the time series (default: `auto`)
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|from
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|any
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|{es} date math string for the start of the time range (default: `now-1y`)
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|to
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|any
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|{es} date math string for the end of the time range (default: `now`)
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|timezone
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|any
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|Time zone for the time range (default: `UTC`)
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|===
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*Returns:* datatable
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