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/**
* Copyright (C) 2014 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
/**
* This file tests db/exec/update.cpp (UpdateStage).
*/
#include "mongo/platform/basic.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/database.h"
#include "mongo/db/client.h"
#include "mongo/db/concurrency/write_conflict_exception.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/dbdirectclient.h"
#include "mongo/db/exec/collection_scan.h"
#include "mongo/db/exec/eof.h"
#include "mongo/db/exec/queued_data_stage.h"
#include "mongo/db/exec/update.h"
#include "mongo/db/exec/working_set.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/json.h"
#include "mongo/db/matcher/extensions_callback_disallow_extensions.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/ops/update_driver.h"
#include "mongo/db/ops/update_lifecycle_impl.h"
#include "mongo/db/ops/update_request.h"
#include "mongo/db/query/canonical_query.h"
#include "mongo/db/service_context.h"
#include "mongo/dbtests/dbtests.h"
#include "mongo/stdx/memory.h"
namespace QueryStageUpdate {
using std::unique_ptr;
using std::vector;
using stdx::make_unique;
static const NamespaceString nss("unittests.QueryStageUpdate");
class QueryStageUpdateBase {
public:
QueryStageUpdateBase() : _client(&_opCtx) {
OldClientWriteContext ctx(&_opCtx, nss.ns());
_client.dropCollection(nss.ns());
_client.createCollection(nss.ns());
}
virtual ~QueryStageUpdateBase() {
OldClientWriteContext ctx(&_opCtx, nss.ns());
_client.dropCollection(nss.ns());
}
void insert(const BSONObj& doc) {
_client.insert(nss.ns(), doc);
}
void remove(const BSONObj& obj) {
_client.remove(nss.ns(), obj);
}
size_t count(const BSONObj& query) {
return _client.count(nss.ns(), query, 0, 0, 0);
}
unique_ptr<CanonicalQuery> canonicalize(const BSONObj& query) {
auto qr = stdx::make_unique<QueryRequest>(nss);
qr->setFilter(query);
auto statusWithCQ = CanonicalQuery::canonicalize(
&_opCtx, std::move(qr), ExtensionsCallbackDisallowExtensions());
ASSERT_OK(statusWithCQ.getStatus());
return std::move(statusWithCQ.getValue());
}
/**
* Runs the update operation by calling work until EOF. Asserts that
* the update stage always returns NEED_TIME.
*/
void runUpdate(UpdateStage* updateStage) {
WorkingSetID id = WorkingSet::INVALID_ID;
PlanStage::StageState state = PlanStage::NEED_TIME;
while (PlanStage::IS_EOF != state) {
ASSERT_EQUALS(PlanStage::NEED_TIME, state);
state = updateStage->work(&id);
}
}
/**
* Returns a vector of all of the documents currently in 'collection'.
*
* Uses a forward collection scan stage to get the docs, and populates 'out' with
* the results.
*/
void getCollContents(Collection* collection, vector<BSONObj>* out) {
WorkingSet ws;
CollectionScanParams params;
params.collection = collection;
params.direction = CollectionScanParams::FORWARD;
params.tailable = false;
unique_ptr<CollectionScan> scan(new CollectionScan(&_opCtx, params, &ws, NULL));
while (!scan->isEOF()) {
WorkingSetID id = WorkingSet::INVALID_ID;
PlanStage::StageState state = scan->work(&id);
if (PlanStage::ADVANCED == state) {
WorkingSetMember* member = ws.get(id);
verify(member->hasObj());
out->push_back(member->obj.value().getOwned());
}
}
}
void getRecordIds(Collection* collection,
CollectionScanParams::Direction direction,
vector<RecordId>* out) {
WorkingSet ws;
CollectionScanParams params;
params.collection = collection;
params.direction = direction;
params.tailable = false;
unique_ptr<CollectionScan> scan(new CollectionScan(&_opCtx, params, &ws, NULL));
while (!scan->isEOF()) {
WorkingSetID id = WorkingSet::INVALID_ID;
PlanStage::StageState state = scan->work(&id);
if (PlanStage::ADVANCED == state) {
WorkingSetMember* member = ws.get(id);
verify(member->hasRecordId());
out->push_back(member->recordId);
}
}
}
/**
* Asserts that 'objs' contains 'expectedDoc'.
*/
void assertHasDoc(const vector<BSONObj>& objs, const BSONObj& expectedDoc) {
bool foundDoc = false;
for (size_t i = 0; i < objs.size(); i++) {
if (0 == objs[i].woCompare(expectedDoc)) {
foundDoc = true;
break;
}
}
ASSERT(foundDoc);
}
protected:
const ServiceContext::UniqueOperationContext _txnPtr = cc().makeOperationContext();
OperationContext& _opCtx = *_txnPtr;
private:
DBDirectClient _client;
};
/**
* Test an upsert into an empty collection.
*/
class QueryStageUpdateUpsertEmptyColl : public QueryStageUpdateBase {
public:
void run() {
// Run the update.
{
OldClientWriteContext ctx(&_opCtx, nss.ns());
CurOp& curOp = *CurOp::get(_opCtx);
OpDebug* opDebug = &curOp.debug();
UpdateDriver driver((UpdateDriver::Options()));
Collection* collection = ctx.getCollection();
// Collection should be empty.
ASSERT_EQUALS(0U, count(BSONObj()));
UpdateRequest request(nss);
UpdateLifecycleImpl updateLifecycle(nss);
request.setLifecycle(&updateLifecycle);
// Update is the upsert {_id: 0, x: 1}, {$set: {y: 2}}.
BSONObj query = fromjson("{_id: 0, x: 1}");
BSONObj updates = fromjson("{$set: {y: 2}}");
request.setUpsert();
request.setQuery(query);
request.setUpdates(updates);
ASSERT_OK(driver.parse(request.getUpdates(), request.isMulti()));
// Setup update params.
UpdateStageParams params(&request, &driver, opDebug);
unique_ptr<CanonicalQuery> cq(canonicalize(query));
params.canonicalQuery = cq.get();
auto ws = make_unique<WorkingSet>();
auto eofStage = make_unique<EOFStage>(&_opCtx);
auto updateStage =
make_unique<UpdateStage>(&_opCtx, params, ws.get(), collection, eofStage.release());
runUpdate(updateStage.get());
}
// Verify the contents of the resulting collection.
{
AutoGetCollectionForRead ctx(&_opCtx, nss);
Collection* collection = ctx.getCollection();
vector<BSONObj> objs;
getCollContents(collection, &objs);
// Expect a single document, {_id: 0, x: 1, y: 2}.
ASSERT_EQUALS(1U, objs.size());
ASSERT_BSONOBJ_EQ(objs[0], fromjson("{_id: 0, x: 1, y: 2}"));
}
}
};
/**
* Test receipt of an invalidation: case in which the document about to updated
* is deleted.
*/
class QueryStageUpdateSkipInvalidatedDoc : public QueryStageUpdateBase {
public:
void run() {
// Run the update.
{
OldClientWriteContext ctx(&_opCtx, nss.ns());
// Populate the collection.
for (int i = 0; i < 10; ++i) {
insert(BSON("_id" << i << "foo" << i));
}
ASSERT_EQUALS(10U, count(BSONObj()));
CurOp& curOp = *CurOp::get(_opCtx);
OpDebug* opDebug = &curOp.debug();
UpdateDriver driver((UpdateDriver::Options()));
Database* db = ctx.db();
Collection* coll = db->getCollection(nss.ns());
// Get the RecordIds that would be returned by an in-order scan.
vector<RecordId> recordIds;
getRecordIds(coll, CollectionScanParams::FORWARD, &recordIds);
UpdateRequest request(nss);
UpdateLifecycleImpl updateLifecycle(nss);
request.setLifecycle(&updateLifecycle);
// Update is a multi-update that sets 'bar' to 3 in every document
// where foo is less than 5.
BSONObj query = fromjson("{foo: {$lt: 5}}");
BSONObj updates = fromjson("{$set: {bar: 3}}");
request.setMulti();
request.setQuery(query);
request.setUpdates(updates);
ASSERT_OK(driver.parse(request.getUpdates(), request.isMulti()));
// Configure the scan.
CollectionScanParams collScanParams;
collScanParams.collection = coll;
collScanParams.direction = CollectionScanParams::FORWARD;
collScanParams.tailable = false;
// Configure the update.
UpdateStageParams updateParams(&request, &driver, opDebug);
unique_ptr<CanonicalQuery> cq(canonicalize(query));
updateParams.canonicalQuery = cq.get();
auto ws = make_unique<WorkingSet>();
auto cs = make_unique<CollectionScan>(&_opCtx, collScanParams, ws.get(), cq->root());
auto updateStage =
make_unique<UpdateStage>(&_opCtx, updateParams, ws.get(), coll, cs.release());
const UpdateStats* stats =
static_cast<const UpdateStats*>(updateStage->getSpecificStats());
const size_t targetDocIndex = 3;
while (stats->nModified < targetDocIndex) {
WorkingSetID id = WorkingSet::INVALID_ID;
PlanStage::StageState state = updateStage->work(&id);
ASSERT_EQUALS(PlanStage::NEED_TIME, state);
}
// Remove recordIds[targetDocIndex];
updateStage->saveState();
{
WriteUnitOfWork wunit(&_opCtx);
updateStage->invalidate(&_opCtx, recordIds[targetDocIndex], INVALIDATION_DELETION);
wunit.commit();
}
BSONObj targetDoc = coll->docFor(&_opCtx, recordIds[targetDocIndex]).value();
ASSERT(!targetDoc.isEmpty());
remove(targetDoc);
updateStage->restoreState();
// Do the remaining updates.
while (!updateStage->isEOF()) {
WorkingSetID id = WorkingSet::INVALID_ID;
PlanStage::StageState state = updateStage->work(&id);
ASSERT(PlanStage::NEED_TIME == state || PlanStage::IS_EOF == state);
}
// 4 of the 5 matching documents should have been modified (one was deleted).
ASSERT_EQUALS(4U, stats->nModified);
ASSERT_EQUALS(4U, stats->nMatched);
}
// Check the contents of the collection.
{
AutoGetCollectionForRead ctx(&_opCtx, nss);
Collection* collection = ctx.getCollection();
vector<BSONObj> objs;
getCollContents(collection, &objs);
// Verify that the collection now has 9 docs (one was deleted).
ASSERT_EQUALS(9U, objs.size());
// Make sure that the collection has certain documents.
assertHasDoc(objs, fromjson("{_id: 0, foo: 0, bar: 3}"));
assertHasDoc(objs, fromjson("{_id: 1, foo: 1, bar: 3}"));
assertHasDoc(objs, fromjson("{_id: 2, foo: 2, bar: 3}"));
assertHasDoc(objs, fromjson("{_id: 4, foo: 4, bar: 3}"));
assertHasDoc(objs, fromjson("{_id: 5, foo: 5}"));
assertHasDoc(objs, fromjson("{_id: 6, foo: 6}"));
}
}
};
/**
* Test that the update stage returns an owned copy of the original document if
* ReturnDocOption::RETURN_OLD is specified.
*/
class QueryStageUpdateReturnOldDoc : public QueryStageUpdateBase {
public:
void run() {
// Populate the collection.
for (int i = 0; i < 10; ++i) {
insert(BSON("_id" << i << "foo" << i));
}
ASSERT_EQUALS(10U, count(BSONObj()));
// Various variables we'll need.
OldClientWriteContext ctx(&_opCtx, nss.ns());
OpDebug* opDebug = &CurOp::get(_opCtx)->debug();
Collection* coll = ctx.getCollection();
UpdateLifecycleImpl updateLifecycle(nss);
UpdateRequest request(nss);
UpdateDriver driver((UpdateDriver::Options()));
const int targetDocIndex = 0; // We'll be working with the first doc in the collection.
const BSONObj query = BSON("foo" << BSON("$gte" << targetDocIndex));
const auto ws = make_unique<WorkingSet>();
const unique_ptr<CanonicalQuery> cq(canonicalize(query));
// Get the RecordIds that would be returned by an in-order scan.
vector<RecordId> recordIds;
getRecordIds(coll, CollectionScanParams::FORWARD, &recordIds);
// Populate the request.
request.setQuery(query);
request.setUpdates(fromjson("{$set: {x: 0}}"));
request.setSort(BSONObj());
request.setMulti(false);
request.setReturnDocs(UpdateRequest::RETURN_OLD);
request.setLifecycle(&updateLifecycle);
ASSERT_OK(driver.parse(request.getUpdates(), request.isMulti()));
// Configure a QueuedDataStage to pass the first object in the collection back in a
// RID_AND_OBJ state.
auto qds = make_unique<QueuedDataStage>(&_opCtx, ws.get());
WorkingSetID id = ws->allocate();
WorkingSetMember* member = ws->get(id);
member->recordId = recordIds[targetDocIndex];
const BSONObj oldDoc = BSON("_id" << targetDocIndex << "foo" << targetDocIndex);
member->obj = Snapshotted<BSONObj>(SnapshotId(), oldDoc);
ws->transitionToRecordIdAndObj(id);
qds->pushBack(id);
// Configure the update.
UpdateStageParams updateParams(&request, &driver, opDebug);
updateParams.canonicalQuery = cq.get();
const auto updateStage =
make_unique<UpdateStage>(&_opCtx, updateParams, ws.get(), coll, qds.release());
// Should return advanced.
id = WorkingSet::INVALID_ID;
PlanStage::StageState state = updateStage->work(&id);
ASSERT_EQUALS(PlanStage::ADVANCED, state);
// Make sure the returned value is what we expect it to be.
// Should give us back a valid id.
ASSERT_TRUE(WorkingSet::INVALID_ID != id);
WorkingSetMember* resultMember = ws->get(id);
// With an owned copy of the object, with no RecordId.
ASSERT_TRUE(resultMember->hasOwnedObj());
ASSERT_FALSE(resultMember->hasRecordId());
ASSERT_EQUALS(resultMember->getState(), WorkingSetMember::OWNED_OBJ);
ASSERT_TRUE(resultMember->obj.value().isOwned());
// Should be the old value.
ASSERT_BSONOBJ_EQ(resultMember->obj.value(), oldDoc);
// Should have done the update.
BSONObj newDoc = BSON("_id" << targetDocIndex << "foo" << targetDocIndex << "x" << 0);
vector<BSONObj> objs;
getCollContents(coll, &objs);
ASSERT_BSONOBJ_EQ(objs[targetDocIndex], newDoc);
// That should be it.
id = WorkingSet::INVALID_ID;
ASSERT_EQUALS(PlanStage::IS_EOF, updateStage->work(&id));
}
};
/**
* Test that the update stage returns an owned copy of the updated document if
* ReturnDocOption::RETURN_NEW is specified.
*/
class QueryStageUpdateReturnNewDoc : public QueryStageUpdateBase {
public:
void run() {
// Populate the collection.
for (int i = 0; i < 50; ++i) {
insert(BSON("_id" << i << "foo" << i));
}
ASSERT_EQUALS(50U, count(BSONObj()));
// Various variables we'll need.
OldClientWriteContext ctx(&_opCtx, nss.ns());
OpDebug* opDebug = &CurOp::get(_opCtx)->debug();
Collection* coll = ctx.getCollection();
UpdateLifecycleImpl updateLifecycle(nss);
UpdateRequest request(nss);
UpdateDriver driver((UpdateDriver::Options()));
const int targetDocIndex = 10;
const BSONObj query = BSON("foo" << BSON("$gte" << targetDocIndex));
const auto ws = make_unique<WorkingSet>();
const unique_ptr<CanonicalQuery> cq(canonicalize(query));
// Get the RecordIds that would be returned by an in-order scan.
vector<RecordId> recordIds;
getRecordIds(coll, CollectionScanParams::FORWARD, &recordIds);
// Populate the request.
request.setQuery(query);
request.setUpdates(fromjson("{$set: {x: 0}}"));
request.setSort(BSONObj());
request.setMulti(false);
request.setReturnDocs(UpdateRequest::RETURN_NEW);
request.setLifecycle(&updateLifecycle);
ASSERT_OK(driver.parse(request.getUpdates(), request.isMulti()));
// Configure a QueuedDataStage to pass the first object in the collection back in a
// RID_AND_OBJ state.
auto qds = make_unique<QueuedDataStage>(&_opCtx, ws.get());
WorkingSetID id = ws->allocate();
WorkingSetMember* member = ws->get(id);
member->recordId = recordIds[targetDocIndex];
const BSONObj oldDoc = BSON("_id" << targetDocIndex << "foo" << targetDocIndex);
member->obj = Snapshotted<BSONObj>(SnapshotId(), oldDoc);
ws->transitionToRecordIdAndObj(id);
qds->pushBack(id);
// Configure the update.
UpdateStageParams updateParams(&request, &driver, opDebug);
updateParams.canonicalQuery = cq.get();
auto updateStage =
make_unique<UpdateStage>(&_opCtx, updateParams, ws.get(), coll, qds.release());
// Should return advanced.
id = WorkingSet::INVALID_ID;
PlanStage::StageState state = updateStage->work(&id);
ASSERT_EQUALS(PlanStage::ADVANCED, state);
// Make sure the returned value is what we expect it to be.
// Should give us back a valid id.
ASSERT_TRUE(WorkingSet::INVALID_ID != id);
WorkingSetMember* resultMember = ws->get(id);
// With an owned copy of the object, with no RecordId.
ASSERT_TRUE(resultMember->hasOwnedObj());
ASSERT_FALSE(resultMember->hasRecordId());
ASSERT_EQUALS(resultMember->getState(), WorkingSetMember::OWNED_OBJ);
ASSERT_TRUE(resultMember->obj.value().isOwned());
// Should be the new value.
BSONObj newDoc = BSON("_id" << targetDocIndex << "foo" << targetDocIndex << "x" << 0);
ASSERT_BSONOBJ_EQ(resultMember->obj.value(), newDoc);
// Should have done the update.
vector<BSONObj> objs;
getCollContents(coll, &objs);
ASSERT_BSONOBJ_EQ(objs[targetDocIndex], newDoc);
// That should be it.
id = WorkingSet::INVALID_ID;
ASSERT_EQUALS(PlanStage::IS_EOF, updateStage->work(&id));
}
};
/**
* Test that an update stage which has not been asked to return any version of the updated document
* will skip a WorkingSetMember that has been returned from the child in the OWNED_OBJ state. A
* WorkingSetMember in the OWNED_OBJ state implies there was a conflict during execution, so this
* WorkingSetMember should be skipped.
*/
class QueryStageUpdateSkipOwnedObjects : public QueryStageUpdateBase {
public:
void run() {
// Various variables we'll need.
OldClientWriteContext ctx(&_opCtx, nss.ns());
OpDebug* opDebug = &CurOp::get(_opCtx)->debug();
Collection* coll = ctx.getCollection();
UpdateLifecycleImpl updateLifecycle(nss);
UpdateRequest request(nss);
UpdateDriver driver((UpdateDriver::Options()));
const BSONObj query = BSONObj();
const auto ws = make_unique<WorkingSet>();
const unique_ptr<CanonicalQuery> cq(canonicalize(query));
// Populate the request.
request.setQuery(query);
request.setUpdates(fromjson("{$set: {x: 0}}"));
request.setSort(BSONObj());
request.setMulti(false);
request.setLifecycle(&updateLifecycle);
ASSERT_OK(driver.parse(request.getUpdates(), request.isMulti()));
// Configure a QueuedDataStage to pass an OWNED_OBJ to the update stage.
auto qds = make_unique<QueuedDataStage>(&_opCtx, ws.get());
{
WorkingSetID id = ws->allocate();
WorkingSetMember* member = ws->get(id);
member->obj = Snapshotted<BSONObj>(SnapshotId(), fromjson("{x: 1}"));
member->transitionToOwnedObj();
qds->pushBack(id);
}
// Configure the update.
UpdateStageParams updateParams(&request, &driver, opDebug);
updateParams.canonicalQuery = cq.get();
const auto updateStage =
make_unique<UpdateStage>(&_opCtx, updateParams, ws.get(), coll, qds.release());
const UpdateStats* stats = static_cast<const UpdateStats*>(updateStage->getSpecificStats());
// Call work, passing the set up member to the update stage.
WorkingSetID id = WorkingSet::INVALID_ID;
PlanStage::StageState state = updateStage->work(&id);
// Should return NEED_TIME, not modifying anything.
ASSERT_EQUALS(PlanStage::NEED_TIME, state);
ASSERT_EQUALS(stats->nModified, 0U);
id = WorkingSet::INVALID_ID;
state = updateStage->work(&id);
ASSERT_EQUALS(PlanStage::IS_EOF, state);
}
};
class All : public Suite {
public:
All() : Suite("query_stage_update") {}
void setupTests() {
// Stage-specific tests below.
add<QueryStageUpdateUpsertEmptyColl>();
add<QueryStageUpdateSkipInvalidatedDoc>();
add<QueryStageUpdateReturnOldDoc>();
add<QueryStageUpdateReturnNewDoc>();
add<QueryStageUpdateSkipOwnedObjects>();
}
};
SuiteInstance<All> all;
} // namespace QueryStageUpdate
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