feat: allow feature value size to be configured per installation

[rolodato]

Based on a customer request, this PR allows the limit on the size of feature values to be configurable per installation using the FEATURE_VALUE_LIMIT environment variable.

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

3 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
docs	⬜️ Ignored (Inspect)	Visit Preview		Sep 13, 2024 3:52pm
flagsmith-frontend-preview	⬜️ Ignored (Inspect)	Visit Preview		Sep 13, 2024 3:52pm
flagsmith-frontend-staging	⬜️ Ignored (Inspect)	Visit Preview		Sep 13, 2024 3:52pm

[github-actions]

Docker builds report

Image	Build Status	Security report
ghcr.io/flagsmith/flagsmith-e2e:pr-4446	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-api-test:pr-4446	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-api:pr-4446	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-frontend:pr-4446	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith:pr-4446	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-private-cloud:pr-4446	Finished ✅	Results ✅

[github-actions]

Uffizzi Preview deployment-55632 was deleted.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.17%. Comparing base (603889c) to head (8857ea8).
Report is 35 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4446      +/-   ##
==========================================
+ Coverage   97.16%   97.17%   +0.01%     
==========================================
  Files        1160     1164       +4     
  Lines       40123    40280     +157     
==========================================
+ Hits        38986    39143     +157     
  Misses       1137     1137              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[gagantrivedi]

Can we add the sqlmigrate for this and the other migration

[matthewelwell]

Here they are without setting the environment variable:

❯ python manage.py sqlmigrate features 0065
BEGIN;
--
-- Alter field initial_value on feature
--
-- (no-op)
--
-- Alter field initial_value on historicalfeature
--
-- (no-op)
--
-- Alter field string_value on featurestatevalue
--
-- (no-op)
--
-- Alter field string_value on historicalfeaturestatevalue
--
-- (no-op)
COMMIT;
❯ python manage.py sqlmigrate multivariate 0008
BEGIN;
--
-- Alter field string_value on historicalmultivariatefeatureoption
--
-- (no-op)
--
-- Alter field string_value on multivariatefeatureoption
--
-- (no-op)
COMMIT;

... and with the environment variable

❯ export FEATURE_VALUE_LIMIT=2000000
❯ python manage.py sqlmigrate features 0065
BEGIN;
--
-- Alter field initial_value on feature
--
ALTER TABLE "features_feature" ALTER COLUMN "initial_value" TYPE varchar(2000000);
--
-- Alter field initial_value on historicalfeature
--
ALTER TABLE "features_historicalfeature" ALTER COLUMN "initial_value" TYPE varchar(2000000);
--
-- Alter field string_value on featurestatevalue
--
ALTER TABLE "features_featurestatevalue" ALTER COLUMN "string_value" TYPE varchar(2000000);
--
-- Alter field string_value on historicalfeaturestatevalue
--
ALTER TABLE "features_historicalfeaturestatevalue" ALTER COLUMN "string_value" TYPE varchar(2000000);
COMMIT;
❯ python manage.py sqlmigrate multivariate 0008
BEGIN;
--
-- Alter field string_value on historicalmultivariatefeatureoption
--
ALTER TABLE "multivariate_historicalmultivariatefeatureoption" ALTER COLUMN "string_value" TYPE varchar(2000000);
--
-- Alter field string_value on multivariatefeatureoption
--
ALTER TABLE "multivariate_multivariatefeatureoption" ALTER COLUMN "string_value" TYPE varchar(2000000);
COMMIT;