@bsv/overlay/dist/cjs/src/storage/knex/migrations/2025-06-25-001-gasp-pagination-support.js

BSV Blockchain Overlay Services Engine

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.up = up;
exports.down = down;
async function up(knex) {
    // 1. Add score column to outputs table for pagination/sorting
    const hasScoreColumn = await knex.schema.hasColumn('outputs', 'score');
    if (!hasScoreColumn) {
        // Add new column for score (can be timestamp or any other sorting factor)
        await knex.schema.table('outputs', table => {
            table.float('score').notNullable().defaultTo(0);
            // Create compound index on topic and score for efficient querying
            table.index(['topic', 'score']);
        });
    }
    // 2. Create host_sync_state table for tracking sync progress per host/topic
    const hostSyncStateExists = await knex.schema.hasTable('host_sync_state');
    if (!hostSyncStateExists) {
        await knex.schema.createTable('host_sync_state', table => {
            table.string('host').notNullable();
            table.string('topic').notNullable();
            table.bigInteger('since').unsigned().notNullable();
            table.primary(['host', 'topic']);
            table.index('host');
            table.index('topic');
        });
    }
}
async function down(knex) {
    // Rollback in reverse order
    // 1. Drop host_sync_state table
    await knex.schema.dropTableIfExists('host_sync_state');
    // 2. Remove score column from outputs table
    const hasScoreColumn = await knex.schema.hasColumn('outputs', 'score');
    if (hasScoreColumn) {
        await knex.schema.table('outputs', table => {
            // Drop the compound index on topic and score
            table.dropIndex(['topic', 'score']);
            table.dropColumn('score');
        });
    }
}
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