summercms-initial-research/.planning/phases/01-foundation/01-02-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	duration	completed
01-foundation	02	database	quill postgresql hikaricp flyway zio migrations	phase provides 01-01 Mill build with ZIO HTTP server and HOCON configuration	Quill PostgreSQL context with compile-time SQL validation Flyway migration service as ZIO effect V1 migration creating summer_users table /ready endpoint for database connectivity checks	02-plugin-system 03-user-auth 05-cli-scaffolding	added patterns quill-jdbc-zio 4.8.5 flyway-core 10.21.0 flyway-database-postgresql 10.21.0 postgresql 42.7.4 ZIO layers for database access HikariCP connection pooling SnakeCase naming strategy	created modified summercms/src/db/QuillContext.scala summercms/src/db/Migrator.scala summercms/resources/db/migration/V1__create_summer_users.sql summercms/resources/application.conf summercms/src/api/HealthRoutes.scala summercms/src/api/Routes.scala summercms/src/Main.scala	Use 'hikari' prefix for HikariCP config to avoid conflict with ZIO config 'database' prefix Migrations run via CLI only, not auto-run on startup summer_migrations table name instead of default flyway_schema_history	ZLayer composition: dataSourceLayer >>> quillLayer for full database access SnakeCase naming strategy: Scala camelCase fields map to PostgreSQL snake_case columns Liveness vs readiness probes: /health always 200, /ready checks database	35min	2026-02-04

Phase 01 Plan 02: PostgreSQL and Migrations Summary

Quill PostgreSQL context with compile-time SQL validation, Flyway migration service, and /ready endpoint verifying database connectivity

Performance

• Duration: 35 min
• Started: 2026-02-04T20:46:37Z
• Completed: 2026-02-04T21:21:13Z
• Tasks: 3
• Files modified: 7

Accomplishments

• Quill PostgreSQL context with HikariCP connection pooling and SnakeCase naming
• Flyway migrator service exposing migrate/status as ZIO effects
• V1 migration creating summer_users table with proper schema (id, email, password_hash, timestamps)
• /ready endpoint returning 200 when database connected, 503 when not

Task Commits

Each task was committed atomically:

1. Task 1: Create Quill PostgreSQL context - 106e664 (feat)
2. Task 2: Create Flyway migrator service - ddb1964 (feat)
3. Task 3: Add /ready endpoint with database check - 0059add (feat)

Files Created/Modified

• summercms/src/db/QuillContext.scala - Quill PostgreSQL context with dataSourceLayer and quillLayer
• summercms/src/db/Migrator.scala - Flyway wrapper trait with migrate/status ZIO effects
• summercms/resources/db/migration/V1__create_summer_users.sql - Initial schema with summer_users table
• summercms/resources/application.conf - Added hikari prefix for HikariCP configuration
• summercms/src/api/HealthRoutes.scala - Added /ready endpoint with database connectivity check
• summercms/src/api/Routes.scala - Updated type to Routes[DataSource, Response]
• summercms/src/Main.scala - Provides dataSourceLayer to server

Decisions Made

• Separate config prefixes: Used "hikari" prefix for HikariCP/Quill config separate from "database" prefix for ZIO config. The "database" key in ZIO config would conflict with HikariCP property parsing.
• No auto-migration: Migrations are NOT auto-run on startup per CONTEXT.md. Migrator service is available but must be explicitly invoked via CLI (Phase 5).
• summer_migrations table: Custom Flyway table name to distinguish from potential multi-tenant scenarios.

Deviations from Plan

Auto-fixed Issues

1. [Rule 3 - Blocking] Config prefix conflict resolution

• Found during: Task 3 (Testing server startup)
• Issue: HikariCP was failing to initialize because it saw the "database" property from ZIO config and tried to set it as a HikariConfig property
• Fix: Changed Quill DataSource to read from "hikari" prefix instead of "database" prefix
• Files modified: QuillContext.scala, application.conf
• Verification: Server starts, /ready returns 200
• Committed in: 0059add (Task 3 commit)

2. [Rule 3 - Blocking] Created database user and database

• Found during: Task 3 (Testing server startup)
• Issue: PostgreSQL user "summercms" and database "summercms" did not exist
• Fix: Created user and database via psql
• Files modified: None (database-level change)
• Verification: Server connects, /ready returns 200

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Total deviations: 2 auto-fixed (2 blocking) Impact on plan: Both auto-fixes necessary for basic operation. No scope creep.

Issues Encountered

• SLF4J binding warning during startup ("Failed to load class org.slf4j.impl.StaticLoggerBinder") - cosmetic only, not a functional issue. Can add slf4j-simple dependency in future if logging is needed.

User Setup Required

Database setup required. If PostgreSQL user/database don't exist:

# Create database user and database
sudo -u postgres psql -c "CREATE USER summercms WITH PASSWORD 'summercms';"
sudo -u postgres psql -c "CREATE DATABASE summercms OWNER summercms;"

Or override via environment variables:

• DB_HOST - Database host (default: localhost)
• DB_PORT - Database port (default: 5432)
• DB_NAME - Database name (default: summercms)
• DB_USER - Database user (default: summercms)
• DB_PASSWORD - Database password (default: summercms)

Next Phase Readiness

• Database layer complete with compile-time SQL validation via Quill
• Migration service ready for CLI integration (Phase 5)
• /ready endpoint available for deployment health checks
• Ready for Phase 2 (Plugin System) or Phase 3 (User Auth)

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Phase: 01-foundation Completed: 2026-02-04