heroku/lib/commands/pg/vacuum-stats.js

CLI to interact with Heroku

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const command_1 = require("@heroku-cli/command");
const core_1 = require("@oclif/core");
const fetcher_1 = require("../../lib/pg/fetcher");
const psql_1 = require("../../lib/pg/psql");
const tsheredoc_1 = require("tsheredoc");
const nls_1 = require("../../nls");
class VacuumStats extends command_1.Command {
    async run() {
        const { flags, args } = await this.parse(VacuumStats);
        const db = await (0, fetcher_1.database)(this.heroku, flags.app, args.database);
        const query = (0, tsheredoc_1.default)(`
      WITH table_opts AS (
        SELECT
          pg_class.oid, relname, nspname, array_to_string(reloptions, '') AS relopts
        FROM
          pg_class INNER JOIN pg_namespace ns ON relnamespace = ns.oid
      ), vacuum_settings AS (
        SELECT
          oid, relname, nspname,
          CASE
            WHEN relopts LIKE '%autovacuum_vacuum_threshold%'
              THEN substring(relopts, '.*autovacuum_vacuum_threshold=([0-9.]+).*')::integer
              ELSE current_setting('autovacuum_vacuum_threshold')::integer
            END AS autovacuum_vacuum_threshold,
          CASE
            WHEN relopts LIKE '%autovacuum_vacuum_scale_factor%'
              THEN substring(relopts, '.*autovacuum_vacuum_scale_factor=([0-9.]+).*')::real
              ELSE current_setting('autovacuum_vacuum_scale_factor')::real
            END AS autovacuum_vacuum_scale_factor
        FROM
          table_opts
      )
      SELECT
        vacuum_settings.nspname AS schema,
        vacuum_settings.relname AS table,
        to_char(psut.last_vacuum, 'YYYY-MM-DD HH24:MI') AS last_vacuum,
        to_char(psut.last_autovacuum, 'YYYY-MM-DD HH24:MI') AS last_autovacuum,
        to_char(pg_class.reltuples, '9G999G999G999') AS rowcount,
        to_char(psut.n_dead_tup, '9G999G999G999') AS dead_rowcount,
        to_char(autovacuum_vacuum_threshold
              + (autovacuum_vacuum_scale_factor::numeric * pg_class.reltuples), '9G999G999G999') AS autovacuum_threshold,
        CASE
          WHEN autovacuum_vacuum_threshold + (autovacuum_vacuum_scale_factor::numeric * pg_class.reltuples) < psut.n_dead_tup
          THEN 'yes'
        END AS expect_autovacuum
      FROM
        pg_stat_user_tables psut INNER JOIN pg_class ON psut.relid = pg_class.oid
          INNER JOIN vacuum_settings ON pg_class.oid = vacuum_settings.oid
      ORDER BY 1
    `);
        const output = await (0, psql_1.exec)(db, query);
        core_1.ux.log(output);
    }
}
exports.default = VacuumStats;
VacuumStats.topic = 'pg';
VacuumStats.description = 'show dead rows and whether an automatic vacuum is expected to be triggered';
VacuumStats.flags = {
    app: command_1.flags.app({ required: true }),
    remote: command_1.flags.remote(),
};
VacuumStats.args = {
    database: core_1.Args.string({ description: `${(0, nls_1.nls)('pg:database:arg:description')} ${(0, nls_1.nls)('pg:database:arg:description:default:suffix')}` }),
};