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(function() {
'use strict';
var test = new ShardingTest({shards: 1, mongos: 1, other: {chunkSize: 1}});
var mongos = test.s0;
var mongod = test.shard0;
var res;
var dbArray;
// grab the config db instance by name
var getDBSection = function(dbsArray, dbToFind) {
for (var pos in dbsArray) {
if (dbsArray[pos].name && dbsArray[pos].name === dbToFind)
return dbsArray[pos];
}
return null;
};
// Function to verify information for a database entry in listDatabases.
var dbEntryCheck = function(dbEntry, onConfig) {
assert.neq(null, dbEntry);
assert.neq(null, dbEntry.sizeOnDisk);
assert.eq(false, dbEntry.empty);
// Check against shards
var shards = dbEntry.shards;
assert(shards);
assert((shards["config"] && onConfig) || (!shards["config"] && !onConfig));
};
// Non-config-server db checks.
{
assert.writeOK(mongos.getDB("blah").foo.insert({_id: 1}));
assert.writeOK(mongos.getDB("foo").foo.insert({_id: 1}));
assert.writeOK(mongos.getDB("raw").foo.insert({_id: 1}));
res = mongos.adminCommand("listDatabases");
dbArray = res.databases;
dbEntryCheck(getDBSection(dbArray, "blah"), false);
dbEntryCheck(getDBSection(dbArray, "foo"), false);
dbEntryCheck(getDBSection(dbArray, "raw"), false);
}
// Local db is never returned.
{
res = mongos.adminCommand("listDatabases");
dbArray = res.databases;
assert(!getDBSection(dbArray, 'local'));
}
// Admin and config are always reported on the config shard.
{
assert.writeOK(mongos.getDB("admin").test.insert({_id: 1}));
assert.writeOK(mongos.getDB("config").test.insert({_id: 1}));
res = mongos.adminCommand("listDatabases");
dbArray = res.databases;
dbEntryCheck(getDBSection(dbArray, "config"), true);
dbEntryCheck(getDBSection(dbArray, "admin"), true);
}
// Config db can be present on config shard and on other shards.
{
mongod.getDB("config").foo.insert({_id: 1});
res = mongos.adminCommand("listDatabases");
dbArray = res.databases;
var entry = getDBSection(dbArray, "config");
dbEntryCheck(entry, true);
assert(entry["shards"]);
assert.eq(Object.keys(entry["shards"]).length, 2);
}
// Admin db is only reported on the config shard, never on other shards.
{
mongod.getDB("admin").foo.insert({_id: 1});
res = mongos.adminCommand("listDatabases");
dbArray = res.databases;
var entry = getDBSection(dbArray, "admin");
dbEntryCheck(entry, true);
assert(entry["shards"]);
assert.eq(Object.keys(entry["shards"]).length, 1);
}
test.stop();
})();
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