Support for ElastAlert2 'summary_table_type' option

[sinister3vil]

🎉 Goal

Support summary_table_type field with ascii, html and markdown options in UI.

💪 Motivation

There's currently no support for this and aggregated e-mail alerts are coming in as ascii, but not monospace, and appear quite ugly.

A different approach would be supporting direct editing of the rule YAML and any throw a message in the UI if there are unsupported options, something like "Rule includes summary_table_type option which is not supported in Praeco. Please use the YAML editor to change this option".

[nsano-rururu]

Is it necessary to be able to set summary_table_fields on the screen?

[sinister3vil]

Hello @nsano-rururu,

Do you mean having it as a UI option vs setting it in a config as a global setting?

[nsano-rururu]

UI

[sinister3vil]

Well, I believe it should be configurable per rule, cause some times you may need an HTML format, others markdown and others you'd be fine with just ascii.
Do you find there's no value in having it in the UI? If not, how would it be set?

[nsano-rururu]

summary table

The following are the setting items
Only summary_table_type is required

summary_table_type
　 ascii or markdown is option button

summary_prefix
　text

summary_suffix
　text

summary_table_max_rows
　number

summary_table_fields
UI like below

[nsano-rururu]

If you want to use the same settings for all rules,
Write it in the following file of rules

BaseRule.config