docs(03-postgresql-support): create phase plan
This commit is contained in:
426
.planning/phases/03-postgresql-support/03-01-PLAN.md
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426
.planning/phases/03-postgresql-support/03-01-PLAN.md
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@@ -0,0 +1,426 @@
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---
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phase: 03-postgresql-support
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plan: 01
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type: execute
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wave: 1
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depends_on: []
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files_modified:
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- pkg/diunwebhook/postgres_store.go
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- pkg/diunwebhook/migrate.go
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- pkg/diunwebhook/migrations/postgres/0001_initial_schema.up.sql
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- pkg/diunwebhook/migrations/postgres/0001_initial_schema.down.sql
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- go.mod
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- go.sum
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autonomous: true
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requirements: [DB-01, DB-03]
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must_haves:
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truths:
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- "PostgresStore implements all 9 Store interface methods with PostgreSQL SQL syntax"
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- "PostgreSQL baseline migration creates the same 3 tables as SQLite (updates, tags, tag_assignments)"
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- "RunMigrations is renamed to RunSQLiteMigrations for symmetry; RunPostgresMigrations exists for PostgreSQL"
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- "Existing SQLite migration path is unchanged (backward compatible)"
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artifacts:
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- path: "pkg/diunwebhook/postgres_store.go"
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provides: "PostgresStore struct implementing Store interface"
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exports: ["PostgresStore", "NewPostgresStore"]
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- path: "pkg/diunwebhook/migrations/postgres/0001_initial_schema.up.sql"
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provides: "PostgreSQL baseline schema"
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contains: "CREATE TABLE IF NOT EXISTS updates"
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- path: "pkg/diunwebhook/migrations/postgres/0001_initial_schema.down.sql"
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provides: "PostgreSQL rollback"
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contains: "DROP TABLE IF EXISTS"
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- path: "pkg/diunwebhook/migrate.go"
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provides: "RunSQLiteMigrations and RunPostgresMigrations functions"
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exports: ["RunSQLiteMigrations", "RunPostgresMigrations"]
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key_links:
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- from: "pkg/diunwebhook/postgres_store.go"
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to: "pkg/diunwebhook/store.go"
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via: "implements Store interface"
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pattern: "func \\(s \\*PostgresStore\\)"
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- from: "pkg/diunwebhook/migrate.go"
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to: "pkg/diunwebhook/migrations/postgres/"
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via: "go:embed directive"
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pattern: "go:embed migrations/postgres"
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---
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<objective>
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Create the PostgresStore implementation and PostgreSQL migration infrastructure.
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Purpose: Delivers the core persistence layer for PostgreSQL — all 9 Store methods ported from SQLiteStore with PostgreSQL-native SQL, plus the migration runner and baseline schema. This is the foundation that Plan 02 wires into main.go.
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Output: postgres_store.go, PostgreSQL migration files, updated migrate.go with both RunSQLiteMigrations and RunPostgresMigrations.
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</objective>
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<execution_context>
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@$HOME/.claude/get-shit-done/workflows/execute-plan.md
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@$HOME/.claude/get-shit-done/templates/summary.md
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</execution_context>
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<context>
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@.planning/PROJECT.md
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@.planning/ROADMAP.md
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@.planning/STATE.md
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@.planning/phases/03-postgresql-support/03-CONTEXT.md
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@.planning/phases/03-postgresql-support/03-RESEARCH.md
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@pkg/diunwebhook/store.go
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@pkg/diunwebhook/sqlite_store.go
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@pkg/diunwebhook/migrate.go
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@pkg/diunwebhook/migrations/sqlite/0001_initial_schema.up.sql
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@pkg/diunwebhook/migrations/sqlite/0001_initial_schema.down.sql
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<interfaces>
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<!-- Store interface that PostgresStore must implement -->
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From pkg/diunwebhook/store.go:
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```go
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type Store interface {
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UpsertEvent(event DiunEvent) error
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GetUpdates() (map[string]UpdateEntry, error)
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AcknowledgeUpdate(image string) (found bool, err error)
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ListTags() ([]Tag, error)
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CreateTag(name string) (Tag, error)
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DeleteTag(id int) (found bool, err error)
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AssignTag(image string, tagID int) error
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UnassignTag(image string) error
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TagExists(id int) (bool, error)
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}
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```
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From pkg/diunwebhook/diunwebhook.go:
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```go
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type DiunEvent struct {
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DiunVersion string `json:"diun_version"`
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Hostname string `json:"hostname"`
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Status string `json:"status"`
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Provider string `json:"provider"`
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Image string `json:"image"`
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HubLink string `json:"hub_link"`
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MimeType string `json:"mime_type"`
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Digest string `json:"digest"`
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Created time.Time `json:"created"`
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Platform string `json:"platform"`
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Metadata struct {
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ContainerName string `json:"ctn_names"`
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ContainerID string `json:"ctn_id"`
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State string `json:"ctn_state"`
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Status string `json:"ctn_status"`
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} `json:"metadata"`
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}
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type Tag struct {
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ID int `json:"id"`
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Name string `json:"name"`
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}
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type UpdateEntry struct {
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Event DiunEvent `json:"event"`
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ReceivedAt time.Time `json:"received_at"`
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Acknowledged bool `json:"acknowledged"`
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Tag *Tag `json:"tag"`
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}
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```
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From pkg/diunwebhook/migrate.go:
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```go
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//go:embed migrations/sqlite
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var sqliteMigrations embed.FS
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func RunMigrations(db *sql.DB) error { ... }
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```
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Import alias: `sqlitemigrate "github.com/golang-migrate/migrate/v4/database/sqlite"`
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</interfaces>
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</context>
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<tasks>
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<task type="auto">
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<name>Task 1: Add pgx dependency, create PostgreSQL migrations, update migrate.go</name>
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<read_first>
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- pkg/diunwebhook/migrate.go (current RunMigrations implementation to rename)
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- pkg/diunwebhook/migrations/sqlite/0001_initial_schema.up.sql (schema to translate)
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- pkg/diunwebhook/migrations/sqlite/0001_initial_schema.down.sql (down migration to copy)
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- pkg/diunwebhook/export_test.go (calls RunMigrations - must update call site)
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- cmd/diunwebhook/main.go (calls RunMigrations - must update call site)
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- go.mod (current dependencies)
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</read_first>
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<files>
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pkg/diunwebhook/migrations/postgres/0001_initial_schema.up.sql,
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pkg/diunwebhook/migrations/postgres/0001_initial_schema.down.sql,
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pkg/diunwebhook/migrate.go,
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pkg/diunwebhook/export_test.go,
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cmd/diunwebhook/main.go,
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go.mod,
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go.sum
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</files>
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<action>
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1. Install dependencies:
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```
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go get github.com/jackc/pgx/v5@v5.9.1
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go get github.com/golang-migrate/migrate/v4/database/pgx/v5
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```
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2. Create `pkg/diunwebhook/migrations/postgres/0001_initial_schema.up.sql` with this exact content:
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```sql
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CREATE TABLE IF NOT EXISTS updates (
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image TEXT PRIMARY KEY,
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diun_version TEXT NOT NULL DEFAULT '',
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hostname TEXT NOT NULL DEFAULT '',
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status TEXT NOT NULL DEFAULT '',
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provider TEXT NOT NULL DEFAULT '',
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hub_link TEXT NOT NULL DEFAULT '',
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mime_type TEXT NOT NULL DEFAULT '',
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digest TEXT NOT NULL DEFAULT '',
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created TEXT NOT NULL DEFAULT '',
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platform TEXT NOT NULL DEFAULT '',
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ctn_name TEXT NOT NULL DEFAULT '',
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ctn_id TEXT NOT NULL DEFAULT '',
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ctn_state TEXT NOT NULL DEFAULT '',
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ctn_status TEXT NOT NULL DEFAULT '',
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received_at TEXT NOT NULL,
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acknowledged_at TEXT
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);
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CREATE TABLE IF NOT EXISTS tags (
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id SERIAL PRIMARY KEY,
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name TEXT NOT NULL UNIQUE
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);
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CREATE TABLE IF NOT EXISTS tag_assignments (
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image TEXT PRIMARY KEY,
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tag_id INTEGER NOT NULL REFERENCES tags(id) ON DELETE CASCADE
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);
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```
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Key difference from SQLite: `SERIAL PRIMARY KEY` replaces `INTEGER PRIMARY KEY AUTOINCREMENT` for tags.id. All timestamp columns use TEXT (not TIMESTAMPTZ) to match SQLite scan logic per Pitfall 6 in RESEARCH.md.
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3. Create `pkg/diunwebhook/migrations/postgres/0001_initial_schema.down.sql` with this exact content:
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```sql
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DROP TABLE IF EXISTS tag_assignments;
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DROP TABLE IF EXISTS tags;
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DROP TABLE IF EXISTS updates;
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```
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4. Rewrite `pkg/diunwebhook/migrate.go`:
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- Rename `RunMigrations` to `RunSQLiteMigrations` (per RESEARCH.md recommendation)
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- Add a second `//go:embed migrations/postgres` directive for `var postgresMigrations embed.FS`
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- Add `RunPostgresMigrations(db *sql.DB) error` using `pgxmigrate "github.com/golang-migrate/migrate/v4/database/pgx/v5"` as the database driver
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- The pgx migrate driver name string for `migrate.NewWithInstance` is `"pgx5"` (NOT "pgx" or "postgres" -- this is the registration name used by golang-migrate's pgx/v5 sub-package)
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- Keep both functions in the same file (both drivers compile into the binary regardless per Pitfall 4 in RESEARCH.md)
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- Full imports for the updated file:
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```go
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import (
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"database/sql"
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"embed"
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"errors"
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"github.com/golang-migrate/migrate/v4"
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pgxmigrate "github.com/golang-migrate/migrate/v4/database/pgx/v5"
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sqlitemigrate "github.com/golang-migrate/migrate/v4/database/sqlite"
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"github.com/golang-migrate/migrate/v4/source/iofs"
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_ "modernc.org/sqlite"
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)
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```
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- RunPostgresMigrations body follows the exact same pattern as RunSQLiteMigrations but uses `postgresMigrations`, `"migrations/postgres"`, `pgxmigrate.WithInstance`, and `"pgx5"` as the database name
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5. Update the two call sites that reference `RunMigrations`:
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- `cmd/diunwebhook/main.go` line 29: change `diun.RunMigrations(db)` to `diun.RunSQLiteMigrations(db)`
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- `pkg/diunwebhook/export_test.go` line 12 and line 24: change `RunMigrations(db)` to `RunSQLiteMigrations(db)`
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6. Run `go mod tidy` to clean up go.sum.
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</action>
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<verify>
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<automated>cd /home/jean-luc-makiola/Development/projects/DiunDashboard && go build ./... && go test -v -count=1 ./pkg/diunwebhook/ -run TestWebhookHandler 2>&1 | head -30</automated>
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</verify>
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<acceptance_criteria>
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- pkg/diunwebhook/migrations/postgres/0001_initial_schema.up.sql contains `SERIAL PRIMARY KEY`
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- pkg/diunwebhook/migrations/postgres/0001_initial_schema.up.sql contains `CREATE TABLE IF NOT EXISTS updates`
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- pkg/diunwebhook/migrations/postgres/0001_initial_schema.up.sql contains `CREATE TABLE IF NOT EXISTS tags`
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- pkg/diunwebhook/migrations/postgres/0001_initial_schema.up.sql contains `CREATE TABLE IF NOT EXISTS tag_assignments`
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- pkg/diunwebhook/migrations/postgres/0001_initial_schema.down.sql contains `DROP TABLE IF EXISTS`
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- pkg/diunwebhook/migrate.go contains `func RunSQLiteMigrations(db *sql.DB) error`
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- pkg/diunwebhook/migrate.go contains `func RunPostgresMigrations(db *sql.DB) error`
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- pkg/diunwebhook/migrate.go contains `//go:embed migrations/postgres`
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- pkg/diunwebhook/migrate.go contains `pgxmigrate "github.com/golang-migrate/migrate/v4/database/pgx/v5"`
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- pkg/diunwebhook/migrate.go contains `"pgx5"` (driver name in NewWithInstance call)
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- cmd/diunwebhook/main.go contains `RunSQLiteMigrations` (not RunMigrations)
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- pkg/diunwebhook/export_test.go contains `RunSQLiteMigrations` (not RunMigrations)
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- go.mod contains `github.com/jackc/pgx/v5`
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- `go build ./...` exits 0
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- `go test -count=1 ./pkg/diunwebhook/` exits 0 (all existing SQLite tests still pass)
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</acceptance_criteria>
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<done>PostgreSQL migration files exist with correct dialect. RunMigrations renamed to RunSQLiteMigrations. RunPostgresMigrations added. pgx/v5 dependency in go.mod. All existing tests pass unchanged.</done>
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</task>
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<task type="auto">
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<name>Task 2: Create PostgresStore implementing all 9 Store methods</name>
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<read_first>
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- pkg/diunwebhook/store.go (interface contract to implement)
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- pkg/diunwebhook/sqlite_store.go (reference implementation to port)
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- pkg/diunwebhook/diunwebhook.go (DiunEvent, Tag, UpdateEntry type definitions)
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</read_first>
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<files>pkg/diunwebhook/postgres_store.go</files>
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<action>
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Create `pkg/diunwebhook/postgres_store.go` implementing all 9 Store interface methods.
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Per D-01, D-02: Use `*sql.DB` (from `pgx/v5/stdlib`), not pgx native interface.
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Per D-05: NO mutex -- PostgreSQL handles concurrent writes natively.
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Per D-06: Pool config in constructor: `MaxOpenConns(25)`, `MaxIdleConns(5)`, `ConnMaxLifetime(5 * time.Minute)`.
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Per D-03: Own raw SQL, no shared templates with SQLiteStore.
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**Struct and constructor:**
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```go
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package diunwebhook
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import (
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"database/sql"
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"time"
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)
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type PostgresStore struct {
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db *sql.DB
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}
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func NewPostgresStore(db *sql.DB) *PostgresStore {
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db.SetMaxOpenConns(25)
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db.SetMaxIdleConns(5)
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db.SetConnMaxLifetime(5 * time.Minute)
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return &PostgresStore{db: db}
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}
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```
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**Method-by-method port from SQLiteStore with these dialect changes:**
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1. **UpsertEvent** -- Replace `?` with `$1..$15`, same ON CONFLICT pattern:
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```go
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func (s *PostgresStore) UpsertEvent(event DiunEvent) error {
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_, err := s.db.Exec(`
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INSERT INTO updates (
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image, diun_version, hostname, status, provider,
|
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hub_link, mime_type, digest, created, platform,
|
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ctn_name, ctn_id, ctn_state, ctn_status,
|
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received_at, acknowledged_at
|
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) VALUES ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10,$11,$12,$13,$14,$15,NULL)
|
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ON CONFLICT(image) DO UPDATE SET
|
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diun_version = EXCLUDED.diun_version,
|
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hostname = EXCLUDED.hostname,
|
||||
status = EXCLUDED.status,
|
||||
provider = EXCLUDED.provider,
|
||||
hub_link = EXCLUDED.hub_link,
|
||||
mime_type = EXCLUDED.mime_type,
|
||||
digest = EXCLUDED.digest,
|
||||
created = EXCLUDED.created,
|
||||
platform = EXCLUDED.platform,
|
||||
ctn_name = EXCLUDED.ctn_name,
|
||||
ctn_id = EXCLUDED.ctn_id,
|
||||
ctn_state = EXCLUDED.ctn_state,
|
||||
ctn_status = EXCLUDED.ctn_status,
|
||||
received_at = EXCLUDED.received_at,
|
||||
acknowledged_at = NULL`,
|
||||
event.Image, event.DiunVersion, event.Hostname, event.Status, event.Provider,
|
||||
event.HubLink, event.MimeType, event.Digest,
|
||||
event.Created.Format(time.RFC3339), event.Platform,
|
||||
event.Metadata.ContainerName, event.Metadata.ContainerID,
|
||||
event.Metadata.State, event.Metadata.Status,
|
||||
time.Now().Format(time.RFC3339),
|
||||
)
|
||||
return err
|
||||
}
|
||||
```
|
||||
|
||||
2. **GetUpdates** -- Identical SQL to SQLiteStore (the SELECT query, JOINs, and COALESCE work in both dialects). Copy the full method body from sqlite_store.go verbatim -- the scan logic, time.Parse, and result building are all the same since timestamps are TEXT columns.
|
||||
|
||||
3. **AcknowledgeUpdate** -- Replace `datetime('now')` with `NOW()`, `?` with `$1`:
|
||||
```go
|
||||
res, err := s.db.Exec(`UPDATE updates SET acknowledged_at = NOW() WHERE image = $1`, image)
|
||||
```
|
||||
Return logic identical to SQLiteStore (check RowsAffected).
|
||||
|
||||
4. **ListTags** -- Identical SQL (`SELECT id, name FROM tags ORDER BY name`). Copy verbatim from SQLiteStore.
|
||||
|
||||
5. **CreateTag** -- CRITICAL: Do NOT use `Exec` + `LastInsertId` (pgx does not support LastInsertId). Use `QueryRow` with `RETURNING id`:
|
||||
```go
|
||||
func (s *PostgresStore) CreateTag(name string) (Tag, error) {
|
||||
var id int
|
||||
err := s.db.QueryRow(
|
||||
`INSERT INTO tags (name) VALUES ($1) RETURNING id`, name,
|
||||
).Scan(&id)
|
||||
if err != nil {
|
||||
return Tag{}, err
|
||||
}
|
||||
return Tag{ID: id, Name: name}, nil
|
||||
}
|
||||
```
|
||||
|
||||
6. **DeleteTag** -- Replace `?` with `$1`:
|
||||
```go
|
||||
res, err := s.db.Exec(`DELETE FROM tags WHERE id = $1`, id)
|
||||
```
|
||||
Return logic identical (check RowsAffected).
|
||||
|
||||
7. **AssignTag** -- Replace `INSERT OR REPLACE` with `INSERT ... ON CONFLICT DO UPDATE`:
|
||||
```go
|
||||
_, err := s.db.Exec(
|
||||
`INSERT INTO tag_assignments (image, tag_id) VALUES ($1, $2)
|
||||
ON CONFLICT (image) DO UPDATE SET tag_id = EXCLUDED.tag_id`,
|
||||
image, tagID,
|
||||
)
|
||||
```
|
||||
|
||||
8. **UnassignTag** -- Replace `?` with `$1`:
|
||||
```go
|
||||
_, err := s.db.Exec(`DELETE FROM tag_assignments WHERE image = $1`, image)
|
||||
```
|
||||
|
||||
9. **TagExists** -- Replace `?` with `$1`:
|
||||
```go
|
||||
err := s.db.QueryRow(`SELECT COUNT(*) FROM tags WHERE id = $1`, id).Scan(&count)
|
||||
```
|
||||
|
||||
**IMPORTANT: No mutex.Lock/Unlock anywhere in PostgresStore** (per D-05). No `sync.Mutex` field in the struct.
|
||||
</action>
|
||||
<verify>
|
||||
<automated>cd /home/jean-luc-makiola/Development/projects/DiunDashboard && go build ./... && go vet ./pkg/diunwebhook/</automated>
|
||||
</verify>
|
||||
<acceptance_criteria>
|
||||
- pkg/diunwebhook/postgres_store.go contains `type PostgresStore struct`
|
||||
- pkg/diunwebhook/postgres_store.go contains `func NewPostgresStore(db *sql.DB) *PostgresStore`
|
||||
- pkg/diunwebhook/postgres_store.go contains `func (s *PostgresStore) UpsertEvent(`
|
||||
- pkg/diunwebhook/postgres_store.go contains `func (s *PostgresStore) GetUpdates(`
|
||||
- pkg/diunwebhook/postgres_store.go contains `func (s *PostgresStore) AcknowledgeUpdate(`
|
||||
- pkg/diunwebhook/postgres_store.go contains `func (s *PostgresStore) ListTags(`
|
||||
- pkg/diunwebhook/postgres_store.go contains `func (s *PostgresStore) CreateTag(`
|
||||
- pkg/diunwebhook/postgres_store.go contains `func (s *PostgresStore) DeleteTag(`
|
||||
- pkg/diunwebhook/postgres_store.go contains `func (s *PostgresStore) AssignTag(`
|
||||
- pkg/diunwebhook/postgres_store.go contains `func (s *PostgresStore) UnassignTag(`
|
||||
- pkg/diunwebhook/postgres_store.go contains `func (s *PostgresStore) TagExists(`
|
||||
- pkg/diunwebhook/postgres_store.go contains `RETURNING id` (CreateTag uses QueryRow, not LastInsertId)
|
||||
- pkg/diunwebhook/postgres_store.go contains `ON CONFLICT (image) DO UPDATE SET tag_id = EXCLUDED.tag_id` (AssignTag)
|
||||
- pkg/diunwebhook/postgres_store.go contains `NOW()` (AcknowledgeUpdate)
|
||||
- pkg/diunwebhook/postgres_store.go contains `SetMaxOpenConns(25)` (constructor pool config)
|
||||
- pkg/diunwebhook/postgres_store.go does NOT contain `sync.Mutex` (no mutex for PostgreSQL)
|
||||
- pkg/diunwebhook/postgres_store.go does NOT contain `mu.Lock` (no mutex)
|
||||
- `go build ./...` exits 0
|
||||
- `go vet ./pkg/diunwebhook/` exits 0
|
||||
</acceptance_criteria>
|
||||
<done>PostgresStore implements all 9 Store interface methods with PostgreSQL-native SQL. No mutex. Pool settings configured. CreateTag uses RETURNING id. AssignTag uses ON CONFLICT DO UPDATE. Code compiles and passes vet.</done>
|
||||
</task>
|
||||
|
||||
</tasks>
|
||||
|
||||
<verification>
|
||||
1. `go build ./...` succeeds (both stores compile, migrate.go compiles with both drivers)
|
||||
2. `go test -v -count=1 ./pkg/diunwebhook/` passes (all existing SQLite tests unchanged)
|
||||
3. `go vet ./pkg/diunwebhook/` clean
|
||||
4. PostgresStore has all 9 methods matching Store interface (compiler enforces this)
|
||||
5. Migration files exist in both `migrations/sqlite/` and `migrations/postgres/`
|
||||
</verification>
|
||||
|
||||
<success_criteria>
|
||||
- PostgresStore compiles and implements Store interface (go build succeeds)
|
||||
- All existing SQLite tests pass (RunMigrations rename did not break anything)
|
||||
- PostgreSQL migration creates identical table structure to SQLite (3 tables: updates, tags, tag_assignments)
|
||||
- pgx/v5 is in go.mod as a direct dependency
|
||||
</success_criteria>
|
||||
|
||||
<output>
|
||||
After completion, create `.planning/phases/03-postgresql-support/03-01-SUMMARY.md`
|
||||
</output>
|
||||
Reference in New Issue
Block a user