f46cc2e798
Strip (bd-xxx), (gt-xxx) suffixes from code comments and changelog entries. The descriptions remain meaningful without the ephemeral issue IDs. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
76 lines
2.1 KiB
Go
76 lines
2.1 KiB
Go
package migrations
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import (
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"database/sql"
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"fmt"
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)
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// MigrateBlockedIssuesCache creates the blocked_issues_cache table for performance optimization
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// This cache materializes the recursive CTE computation from GetReadyWork to avoid
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// expensive recursive queries on every call
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func MigrateBlockedIssuesCache(db *sql.DB) error {
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// Check if table already exists
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var tableName string
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err := db.QueryRow(`
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SELECT name FROM sqlite_master
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WHERE type='table' AND name='blocked_issues_cache'
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`).Scan(&tableName)
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if err == sql.ErrNoRows {
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// Create the cache table
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_, err := db.Exec(`
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CREATE TABLE blocked_issues_cache (
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issue_id TEXT NOT NULL,
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PRIMARY KEY (issue_id),
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FOREIGN KEY (issue_id) REFERENCES issues(id) ON DELETE CASCADE
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)
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`)
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if err != nil {
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return fmt.Errorf("failed to create blocked_issues_cache table: %w", err)
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}
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// Populate the cache with initial data using the existing recursive CTE logic
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_, err = db.Exec(`
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INSERT INTO blocked_issues_cache (issue_id)
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WITH RECURSIVE
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-- Step 1: Find issues blocked directly by dependencies
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blocked_directly AS (
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SELECT DISTINCT d.issue_id
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FROM dependencies d
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JOIN issues blocker ON d.depends_on_id = blocker.id
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WHERE d.type = 'blocks'
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AND blocker.status IN ('open', 'in_progress', 'blocked')
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),
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-- Step 2: Propagate blockage to all descendants via parent-child
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blocked_transitively AS (
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-- Base case: directly blocked issues
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SELECT issue_id, 0 as depth
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FROM blocked_directly
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UNION ALL
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-- Recursive case: children of blocked issues inherit blockage
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SELECT d.issue_id, bt.depth + 1
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FROM blocked_transitively bt
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JOIN dependencies d ON d.depends_on_id = bt.issue_id
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WHERE d.type = 'parent-child'
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AND bt.depth < 50
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)
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SELECT DISTINCT issue_id FROM blocked_transitively
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`)
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if err != nil {
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return fmt.Errorf("failed to populate blocked_issues_cache: %w", err)
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}
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return nil
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}
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if err != nil {
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return fmt.Errorf("failed to check for blocked_issues_cache table: %w", err)
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}
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// Table already exists
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return nil
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}
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