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cleanup script, build.sh -> scripts/build.sh 💥
fixes #9
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| #!/usr/bin/env node | ||
| 'use strict' | ||
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| // this is the counterpart to build.sh | ||
|
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| const {join: pathJoin} = require('path') | ||
| const {Client: PostgresClient} = require('pg') | ||
| const formatSQL = require('pg-format') | ||
| const {readdir, rm} = require('fs/promises') | ||
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| const GTFS_NAME = process.env.GTFS_NAME | ||
| if (!GTFS_NAME) { | ||
| console.error('missing/empty GTFS_NAME env var') | ||
| process.exit(1) | ||
| } | ||
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| const DATA_DIR = pathJoin(__dirname, '..', 'data') | ||
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| // keep the most n DBs called $GTFS_NAME… | ||
| const NR_OF_DBS_KEPT = 2 | ||
| // keep the most n trajectories directories called trajectories-$GTFS_NAME… | ||
| const NR_OF_TRAJECTORIES_DIRS_KEPT = 2 | ||
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| ;(async (cfg) => { | ||
| { // delete old DBs | ||
| const prefix = `${GTFS_NAME}_` | ||
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| const db = new PostgresClient({ | ||
| database: 'postgres' | ||
| }) | ||
| await db.connect() | ||
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| const {rows} = await db.query(` | ||
| SELECT | ||
| datname | ||
| FROM pg_database | ||
| `) | ||
| const dbs = rows | ||
| .map(row => row.datname) | ||
| .filter(db => db.slice(0, prefix.length) === prefix) | ||
| .sort() | ||
|
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| const dbsToDelete = dbs.slice(0, -NR_OF_DBS_KEPT) | ||
| for (const dbToDelete of dbsToDelete) { | ||
| console.info(`deleting database ${dbToDelete}`) | ||
| await db.query(formatSQL('DROP DATABASE %I', dbToDelete)) | ||
| } | ||
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| db.end() | ||
| } | ||
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| { // delete old trajectories directories | ||
| const prefix = `trajectories-${GTFS_NAME}_` | ||
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| const trajectoriesDirs = (await readdir(DATA_DIR)) | ||
| .filter(db => db.slice(0, prefix.length) === prefix) | ||
| .sort() | ||
| console.error('trajectoriesDirs', trajectoriesDirs) | ||
|
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| const dirsToDelete = trajectoriesDirs.slice(0, -NR_OF_TRAJECTORIES_DIRS_KEPT) | ||
| for (const dirToDelete of dirsToDelete) { | ||
| const fullPath = pathJoin(DATA_DIR, dirToDelete) | ||
| console.info(`deleting trajectories directory ${fullPath}`) | ||
| await rm(fullPath, {recursive: true}) | ||
| } | ||
| } | ||
|
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| console.debug('done') | ||
| })() | ||
| .catch((err) => { | ||
| console.error(err) | ||
| process.exit(1) | ||
| }) |