Lift submap

The lift submap processing rule uses regular expressions to search for key/value pairs inside a JSON object, then either moves or copies any applicable key/value pairs out of the JSON object and into a higher level of the record.

For a processing rule with a similar effect, see flatten subrecord. For a processing rule with the opposite effect, see nest keys.

Configuration parameters

Key: Required. The key of the object that contains key/value pairs to move or copy. You can also use record accessor syntax to reference keys nested within another nested object.
Regex: Required. The regular expression that determines which key/value pairs to move or copy. The default value of ^.+$ matches all key/value pairs contained within the specified object.
Regex engine: The engine to parse your regular expression. Default: PCRE2.
Levels: Required. How many levels to lift the applicable key/value pairs. For example, the default value of 1 either moves or copies any applicable key/value pairs up one level into the parent object of Key. A value of 3 either moves or copies any applicable/key value pairs up three levels into the great-grandparent object of Key.
Replacement key: Required. The regular expression that sets the naming pattern for any keys that get moved or copied. The default value of %1 preserves all keys' original names.
Keep original: If enabled, the lift submap processing rule preserves the object specified in Key. If not enabled, the rule moves any applicable key/value pairs into a higher level of the record, and then removes the object specified in Key.
Comment: A custom note or description of the rule's function. This text is displayed next to the rule's name in the Actions list in the processing rules interface.

Examples

Using the lift submap rule lets you restructure your telemetry data by pulling key/value pairs out of a nested object and storing them as flat data in a higher level of the record. You can use this rule to simplify deeply nested data and store key/value pairs in more accessible locations.

Move key/value pairs

For example, given this sample log data:

{"timestamp":"2023-03-28T09:08:41.64283645Z","user":{"account":{"vip":"no","id":3},"device":"mobile"},"page_id":30,"action":"purchase"}
{"timestamp":"2023-03-28T09:08:42.643343109Z","user":{"account":{"vip":"yes","id":4},"device":"desktop"},"page_id":10,"action":"purchase"}
{"timestamp":"2023-03-28T09:08:48.643600498Z","user":{"account":{"vip":"no","id":1},"device":"desktop"},"page_id":50,"action":"click"}
{"timestamp":"2023-03-28T09:08:50.643773688Z","user":{"account":{"vip":"yes","id":5},"device":"mobile"},"page_id":40,"action":"purchase"}
{"timestamp":"2023-03-28T09:08:51.643932272Z","user":{"account":{"vip":"no","id":1},"device":"other"},"page_id":30,"action":"purchase"}
{"timestamp":"2023-03-28T09:08:56.644080944Z","user":{"account":{"vip":"yes","id":2},"device":"mobile"},"page_id":40,"action":"click"}
{"timestamp":"2023-03-28T09:09:03.64425954Z","user":{"account":{"vip":"no","id":3},"device":"desktop"},"page_id":30,"action":"click"}
{"timestamp":"2023-03-28T09:09:03.644317046Z","user":{"account":{"vip":"no","id":1},"device":"desktop"},"page_id":20,"action":"view"}
{"timestamp":"2023-03-28T09:09:10.64447719Z","user":{"account":{"vip":"yes","id":2},"device":"desktop"},"page_id":50,"action":"purchase"}
{"timestamp":"2023-03-28T09:09:17.644810963Z","user":{"account":{"vip":"yes","id":2},"device":"other"},"page_id":10,"action":"view"}
{"timestamp":"2023-03-28T09:09:20.644994805Z","user":{"account":{"vip":"no","id":1},"device":"mobile"},"page_id":50,"action":"view"}

A processing rule with the Key value $user.account, the Regex value id, the Levels value 1, and the Replacement key value account.%1 returns the following result:

{"user":{"account.id":3,"device":"mobile"},"timestamp":"2023-03-28T09:08:41.64283645Z","action":"purchase","page_id":30}
{"user":{"account.id":4,"device":"desktop"},"timestamp":"2023-03-28T09:08:42.643343109Z","action":"purchase","page_id":10}
{"user":{"account.id":1,"device":"desktop"},"timestamp":"2023-03-28T09:08:48.643600498Z","action":"click","page_id":50}
{"user":{"account.id":5,"device":"mobile"},"timestamp":"2023-03-28T09:08:50.643773688Z","action":"purchase","page_id":40}
{"user":{"account.id":1,"device":"other"},"timestamp":"2023-03-28T09:08:51.643932272Z","action":"purchase","page_id":30}
{"user":{"account.id":2,"device":"mobile"},"timestamp":"2023-03-28T09:08:56.644080944Z","action":"click","page_id":40}
{"user":{"account.id":3,"device":"desktop"},"timestamp":"2023-03-28T09:09:03.64425954Z","action":"click","page_id":30}
{"user":{"account.id":1,"device":"desktop"},"timestamp":"2023-03-28T09:09:03.644317046Z","action":"view","page_id":20}
{"user":{"account.id":2,"device":"desktop"},"timestamp":"2023-03-28T09:09:10.64447719Z","action":"purchase","page_id":50}
{"user":{"account.id":2,"device":"other"},"timestamp":"2023-03-28T09:09:17.644810963Z","action":"view","page_id":10}
{"user":{"account.id":1,"device":"mobile"},"timestamp":"2023-03-28T09:09:20.644994805Z","action":"view","page_id":50}

This rule searched for applicable key/value pairs inside the account object, moved id up one level into a new key named account.id, and then removed account and the key/value pairs it originally contained.

Copy key/value pairs

You can also use the Keep original setting to copy key/value pairs out of an object instead of moving them. For example, given this sample log data:

{"timestamp":"2023-03-28T09:08:41.64283645Z","user":{"account":{"vip":"no","id":3},"device":"mobile"},"page_id":30,"action":"purchase"}
{"timestamp":"2023-03-28T09:08:42.643343109Z","user":{"account":{"vip":"yes","id":4},"device":"desktop"},"page_id":10,"action":"purchase"}
{"timestamp":"2023-03-28T09:08:48.643600498Z","user":{"account":{"vip":"no","id":1},"device":"desktop"},"page_id":50,"action":"click"}
{"timestamp":"2023-03-28T09:08:50.643773688Z","user":{"account":{"vip":"yes","id":5},"device":"mobile"},"page_id":40,"action":"purchase"}
{"timestamp":"2023-03-28T09:08:51.643932272Z","user":{"account":{"vip":"no","id":1},"device":"other"},"page_id":30,"action":"purchase"}
{"timestamp":"2023-03-28T09:08:56.644080944Z","user":{"account":{"vip":"yes","id":2},"device":"mobile"},"page_id":40,"action":"click"}
{"timestamp":"2023-03-28T09:09:03.64425954Z","user":{"account":{"vip":"no","id":3},"device":"desktop"},"page_id":30,"action":"click"}
{"timestamp":"2023-03-28T09:09:03.644317046Z","user":{"account":{"vip":"no","id":1},"device":"desktop"},"page_id":20,"action":"view"}
{"timestamp":"2023-03-28T09:09:10.64447719Z","user":{"account":{"vip":"yes","id":2},"device":"desktop"},"page_id":50,"action":"purchase"}
{"timestamp":"2023-03-28T09:09:17.644810963Z","user":{"account":{"vip":"yes","id":2},"device":"other"},"page_id":10,"action":"view"}
{"timestamp":"2023-03-28T09:09:20.644994805Z","user":{"account":{"vip":"no","id":1},"device":"mobile"},"page_id":50,"action":"view"}

A processing rule with the Key value $user.account, the Regex value id, the Levels value 1, the Replacement key value account.%1, and the Keep original setting enabled returns the following result:

{"user":{"account":{"id":3,"vip":"no"},"account.id":3,"device":"mobile"},"timestamp":"2023-03-28T09:08:41.64283645Z","action":"purchase","page_id":30}
{"user":{"account":{"id":4,"vip":"yes"},"account.id":4,"device":"desktop"},"timestamp":"2023-03-28T09:08:42.643343109Z","action":"purchase","page_id":10}
{"user":{"account":{"id":1,"vip":"no"},"account.id":1,"device":"desktop"},"timestamp":"2023-03-28T09:08:48.643600498Z","action":"click","page_id":50}
{"user":{"account":{"id":5,"vip":"yes"},"account.id":5,"device":"mobile"},"timestamp":"2023-03-28T09:08:50.643773688Z","action":"purchase","page_id":40}
{"user":{"account":{"id":1,"vip":"no"},"account.id":1,"device":"other"},"timestamp":"2023-03-28T09:08:51.643932272Z","action":"purchase","page_id":30}
{"user":{"account":{"id":2,"vip":"yes"},"account.id":2,"device":"mobile"},"timestamp":"2023-03-28T09:08:56.644080944Z","action":"click","page_id":40}
{"user":{"account":{"id":3,"vip":"no"},"account.id":3,"device":"desktop"},"timestamp":"2023-03-28T09:09:03.64425954Z","action":"click","page_id":30}
{"user":{"account":{"id":1,"vip":"no"},"account.id":1,"device":"desktop"},"timestamp":"2023-03-28T09:09:03.644317046Z","action":"view","page_id":20}
{"user":{"account":{"id":2,"vip":"yes"},"account.id":2,"device":"desktop"},"timestamp":"2023-03-28T09:09:10.64447719Z","action":"purchase","page_id":50}
{"user":{"account":{"id":2,"vip":"yes"},"account.id":2,"device":"other"},"timestamp":"2023-03-28T09:09:17.644810963Z","action":"view","page_id":10}
{"user":{"account":{"id":1,"vip":"no"},"account.id":1,"device":"mobile"},"timestamp":"2023-03-28T09:09:20.644994805Z","action":"view","page_id":50}

This rule searched for applicable key/value pairs inside the account object, moved id up one level into a new key named account.id, but did not remove account and the key/value pairs it originally contained.

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