Created
July 17, 2021 14:36
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mongo_prune_js.js
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| // keep N-day worth of data | |
| var days=7; | |
| // change to false to have the script to really exclude old records | |
| // from the database. While true, no change at all will be made to the DB | |
| var dryrun=true; | |
| var now = new Date().getTime(), | |
| time_criteria = now ; | |
| time_criteria_in_seconds = time_criteria / 1000; | |
| print((dryrun ? "[dryrun] " : "") + "pruning data older than " + days + " days (" + time_criteria + ")... "); | |
| use ace; | |
| var collectionNames = db.getCollectionNames(); | |
| for (i=0; i<collectionNames.length; i++) { | |
| var name = collectionNames[i]; | |
| var query = null; | |
| if (name === 'event' || name === 'alarm') { | |
| query = {time: {$lt:time_criteria}}; | |
| } | |
| if (query) { | |
| count1 = db.getCollection(name).count(); | |
| count2 = db.getCollection(name).find(query).count(); | |
| print((dryrun ? "[dryrun] " : "") + "pruning " + count2 + " entries (total " + count1 + ") from " + name + "... "); | |
| if (!dryrun) { | |
| db.getCollection(name).remove(query); | |
| db.runCommand({ compact: name }); | |
| } | |
| } | |
| } | |
| if (!dryrun) db.repairDatabase(); | |
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