## Description
Refactored the `Message#search_data` method to prevent exceeding
OpenSearch's 1000 field limit during reindex operations.
**Problem:** The previous implementation serialized entire ActiveRecord
objects (Inbox, Sender, Conversation) with all their JSONB fields,
causing dynamic field explosion in OpenSearch. This resulted in
`Searchkick::ImportError` with "Limit of total fields [1000] has been
exceeded".
**Solution:** Whitelisted only necessary fields for search and
filtering, and flattened JSONB `custom_attributes` into key-value pair
arrays to prevent unbounded field creation.
Linked to: CW-5861
## Type of change
- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality not to work as expected)
- [x] This change requires a documentation update
## How Has This Been Tested?
- Verified rubocop passes with no offenses
- Code review of search field usage from
`enterprise/app/services/enterprise/search_service.rb`
- Analyzed actual search queries to determine required indexed fields
**Still needed:**
- Full reindex test on staging/production environment
- Verify search functionality still works after reindex
- Confirm field count is under 1000 limit
## Changes Made
### Before
- Indexed 1000+ fields (entire AR objects with JSONB)
- `inbox` = full Inbox object (23+ fields + JSONB)
- `sender` = full Contact/User/AgentBot object (10+ fields + JSONB)
- `conversation` = full push_event_data
- Dynamic JSONB keys creating unlimited fields
### After
- ~35-40 controlled fields
- Whitelisted search fields: `content`, `attachment_transcribed_text`,
`email_subject`
- Filter fields: `account_id`, `inbox_id`, `conversation_id`,
`sender_id`, `sender_type`, etc.
- Flattened `custom_attributes`: `[{key, value, value_type}]` format
- Helper methods: `search_conversation_data`, `search_inbox_data`,
`search_sender_data`, `search_additional_data`
## Checklist:
- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my code
- [x] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules
## Post-merge Steps
After merging, the following steps are required:
1. **Reindex all messages:**
```bash
bundle exec rails runner "Message.reindex"
```
2. **Verify field count:**
```bash
bundle exec rails runner "
client = Searchkick.client
index_name = Message.searchkick_index.name
mapping = client.indices.get_mapping(index: index_name)
fields = mapping.dig(index_name, 'mappings', 'properties')
puts 'Total fields: ' + fields.keys.count.to_s
"
```
3. **Test search functionality** to ensure queries still work as
expected
---------
Co-authored-by: Vishnu Narayanan <iamwishnu@gmail.com>
Co-authored-by: Pranav <pranav@chatwoot.com>
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