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// Tests the dropping of a sharded database SERVER-3471 SERVER-1726
(function() {
var st = new ShardingTest({shards: 2});
var mongos = st.s0;
var config = mongos.getDB("config");
var dbA = mongos.getDB("DropSharded_A");
var dbB = mongos.getDB("DropSharded_B");
var dbC = mongos.getDB("DropSharded_C");
// Dropping a database that doesn't exist will result in an info field in the response.
var res = assert.commandWorked(dbA.dropDatabase());
assert.eq('database does not exist', res.info);
var numDocs = 3000;
var numColls = 10;
for (var i = 0; i < numDocs; i++) {
dbA.getCollection("data" + (i % numColls)).insert({_id: i});
dbB.getCollection("data" + (i % numColls)).insert({_id: i});
dbC.getCollection("data" + (i % numColls)).insert({_id: i});
}
var key = {_id: 1};
for (var i = 0; i < numColls; i++) {
st.shardColl(dbA.getCollection("data" + i), key);
st.shardColl(dbB.getCollection("data" + i), key);
st.shardColl(dbC.getCollection("data" + i), key);
}
// Insert a document to an unsharded collection and make sure that the document is there.
assert.commandWorked(dbA.unsharded.insert({dummy: 1}));
var shardName = config.databases.findOne({_id: dbA.getName()}).primary;
var shardHostConn = new Mongo(config.shards.findOne({_id: shardName}).host);
var dbAOnShard = shardHostConn.getDB(dbA.getName());
assert.neq(null, dbAOnShard.unsharded.findOne({dummy: 1}));
// Drop the non-suffixed db and ensure that it is the only one that was dropped.
assert.commandWorked(dbA.dropDatabase());
var dbs = mongos.getDBNames();
for (var i = 0; i < dbs.length; i++) {
assert.neq(dbs[i], "" + dbA);
}
assert.eq(0, config.databases.count({_id: dbA.getName()}));
assert.eq(1, config.databases.count({_id: dbB.getName()}));
assert.eq(1, config.databases.count({_id: dbC.getName()}));
// 10 dropped collections
assert.eq(numColls, config.collections.count({_id: RegExp("^" + dbA + "\\..*"), dropped: true}));
// 20 active (dropped is missing)
assert.eq(numColls, config.collections.count({_id: RegExp("^" + dbB + "\\..*")}));
assert.eq(numColls, config.collections.count({_id: RegExp("^" + dbC + "\\..*")}));
for (var i = 0; i < numColls; i++) {
assert.eq(numDocs / numColls, dbB.getCollection("data" + (i % numColls)).find().itcount());
assert.eq(numDocs / numColls, dbC.getCollection("data" + (i % numColls)).find().itcount());
}
// Check that the unsharded collection should have been dropped.
assert.eq(null, dbAOnShard.unsharded.findOne());
st.stop();
})();
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