TEST_F(KVStorageEngineTest, RecreateIndexes) {
repl::setGlobalReplicationCoordinator(
new repl::ReplicationCoordinatorMock(getGlobalServiceContext(), repl::ReplSettings()));
auto opCtx = cc().makeOperationContext();
// Create two indexes for `db.coll1` in the catalog named `foo` and `bar`. Verify the indexes
// appear as idents in the KVEngine.
ASSERT_OK(createCollection(opCtx.get(), NamespaceString("db.coll1")).getStatus());
ASSERT_OK(createIndex(opCtx.get(), NamespaceString("db.coll1"), "foo"));
ASSERT_OK(createIndex(opCtx.get(), NamespaceString("db.coll1"), "bar"));
auto kvIdents = getAllKVEngineIdents(opCtx.get());
ASSERT_EQUALS(2, std::count_if(kvIdents.begin(), kvIdents.end(), [](const std::string& str) {
return str.find("index-") == 0;
}));
// Use the `getIndexNameObjs` to find the `foo` index in the IndexCatalog.
DatabaseCatalogEntry* dbce = _storageEngine->getDatabaseCatalogEntry(opCtx.get(), "db");
CollectionCatalogEntry* cce = dbce->getCollectionCatalogEntry("db.coll1");
auto swIndexNameObjs = getIndexNameObjs(
opCtx.get(), dbce, cce, [](const std::string& indexName) { return indexName == "foo"; });
ASSERT_OK(swIndexNameObjs.getStatus());
auto& indexNameObjs = swIndexNameObjs.getValue();
// There's one index that matched the name `foo`.
ASSERT_EQUALS(static_cast<const unsigned long>(1), indexNameObjs.first.size());
// Assert the parallel vectors have matching sizes.
ASSERT_EQUALS(static_cast<const unsigned long>(1), indexNameObjs.second.size());
// The index that matched should be named `foo`.
ASSERT_EQUALS("foo", indexNameObjs.first[0]);
ASSERT_EQUALS("db.coll1"_sd, indexNameObjs.second[0].getStringField("ns"));
ASSERT_EQUALS("foo"_sd, indexNameObjs.second[0].getStringField("name"));
ASSERT_EQUALS(2, indexNameObjs.second[0].getIntField("v"));
ASSERT_EQUALS(1, indexNameObjs.second[0].getObjectField("key").getIntField("foo"));
// Drop the `foo` index table. Count one remaining index ident according to the KVEngine.
ASSERT_OK(dropIndexTable(opCtx.get(), NamespaceString("db.coll1"), "foo"));
kvIdents = getAllKVEngineIdents(opCtx.get());
ASSERT_EQUALS(1, std::count_if(kvIdents.begin(), kvIdents.end(), [](const std::string& str) {
return str.find("index-") == 0;
}));
AutoGetCollection coll(opCtx.get(), NamespaceString("db.coll1"), LockMode::MODE_X);
// Find the `foo` index in the catalog. Rebuild it. Count two indexes in the KVEngine.
ASSERT_OK(rebuildIndexesOnCollection(opCtx.get(), dbce, cce, indexNameObjs));
ASSERT_TRUE(cce->isIndexReady(opCtx.get(), "foo"));
kvIdents = getAllKVEngineIdents(opCtx.get());
ASSERT_EQUALS(2, std::count_if(kvIdents.begin(), kvIdents.end(), [](const std::string& str) {
return str.find("index-") == 0;
}));
}
