Expire old data using TTL indexes
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//run on mongodb server as | |
//mongo < expireData.js | |
var COUNTLY_DRILL = 'countly_drill', | |
COUNTLY = 'countly', | |
EXPIRE_AFTER = 31536000, | |
INDEX_NAME = "cd_1"; | |
var PROCESS = [ | |
/^drill_events\.*/, | |
/^app_crashes\.*/, | |
]; | |
var conn = new Mongo(), | |
cly = conn.getDB(COUNTLY), | |
drill = conn.getDB(COUNTLY_DRILL); | |
var clyCollections = cly.getCollectionNames(), collections = clyCollections.concat(drill.getCollectionNames()), check = []; | |
collections.forEach(function(c){ | |
var process = false; | |
PROCESS.forEach(function(r){ | |
if (typeof r === 'string' && r === c) { process = true; } | |
else if (typeof r === 'object' && r.test(c)) { process = true; } | |
}); | |
if (process) { | |
var db = clyCollections.indexOf(c) === -1 ? drill : cly; | |
var indexes = db[c].getIndexes(); | |
var hasIndex = false; | |
for(var i = 0; i < indexes.length; i++){ | |
if(indexes[i].name == INDEX_NAME){ | |
if(indexes[i].expireAfterSeconds == EXPIRE_AFTER){ | |
print("skipping", c) | |
hasIndex = true; | |
} | |
//has index but incorrect expire time, need to be reindexed | |
else{ | |
print("Dropping index for", c) | |
db[c].dropIndex(INDEX_NAME); | |
} | |
break; | |
} | |
} | |
if(!hasIndex) | |
check.push(c); | |
} | |
}); | |
print('Indexing following collections:'); | |
printjson(check); | |
check.forEach(function(c){ | |
var db = clyCollections.indexOf(c) === -1 ? drill : cly; | |
db.getCollection(c).createIndex({"cd": 1}, { expireAfterSeconds: EXPIRE_AFTER, background: true } ); | |
}); |
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