1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
// counttests.cpp : count.{h,cpp} unit tests.
/**
* Copyright (C) 2008 10gen 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/>.
*/
#include <boost/thread/thread.hpp>
#include "../db/ops/count.h"
#include "../db/cursor.h"
#include "../db/pdfile.h"
#include "mongo/db/db.h"
#include "mongo/db/json.h"
#include "dbtests.h"
namespace CountTests {
class Base {
Lock::DBWrite lk;
Client::Context _context;
public:
Base() : lk(ns()), _context( ns() ) {
addIndex( fromjson( "{\"a\":1}" ) );
}
~Base() {
try {
boost::shared_ptr<Cursor> c = theDataFileMgr.findAll( ns() );
vector<DiskLoc> toDelete;
for(; c->ok(); c->advance() )
toDelete.push_back( c->currLoc() );
for( vector<DiskLoc>::iterator i = toDelete.begin(); i != toDelete.end(); ++i )
theDataFileMgr.deleteRecord( ns(), i->rec(), *i, false );
DBDirectClient cl;
cl.dropIndexes( ns() );
}
catch ( ... ) {
FAIL( "Exception while cleaning up collection" );
}
}
protected:
static const char *ns() {
return "unittests.counttests";
}
static void addIndex( const BSONObj &key ) {
BSONObjBuilder b;
b.append( "name", key.firstElementFieldName() );
b.append( "ns", ns() );
b.append( "key", key );
BSONObj o = b.done();
stringstream indexNs;
indexNs << "unittests.system.indexes";
theDataFileMgr.insert( indexNs.str().c_str(), o.objdata(), o.objsize() );
}
static void insert( const char *s ) {
insert( fromjson( s ) );
}
static void insert( const BSONObj &o ) {
theDataFileMgr.insert( ns(), o.objdata(), o.objsize() );
}
static BSONObj countCommand( const BSONObj &query ) {
return BSON( "query" << query );
}
};
class Basic : public Base {
public:
void run() {
insert( "{\"a\":\"b\"}" );
BSONObj cmd = fromjson( "{\"query\":{}}" );
string err;
int errCode;
ASSERT_EQUALS( 1, runCount( ns(), cmd, err, errCode ) );
}
};
class Query : public Base {
public:
void run() {
insert( "{\"a\":\"b\"}" );
insert( "{\"a\":\"b\",\"x\":\"y\"}" );
insert( "{\"a\":\"c\"}" );
BSONObj cmd = fromjson( "{\"query\":{\"a\":\"b\"}}" );
string err;
int errCode;
ASSERT_EQUALS( 2, runCount( ns(), cmd, err, errCode ) );
}
};
class Fields : public Base {
public:
void run() {
insert( "{\"a\":\"b\"}" );
insert( "{\"c\":\"d\"}" );
BSONObj cmd = fromjson( "{\"query\":{},\"fields\":{\"a\":1}}" );
string err;
int errCode;
ASSERT_EQUALS( 2, runCount( ns(), cmd, err, errCode ) );
}
};
class QueryFields : public Base {
public:
void run() {
insert( "{\"a\":\"b\"}" );
insert( "{\"a\":\"c\"}" );
insert( "{\"d\":\"e\"}" );
BSONObj cmd = fromjson( "{\"query\":{\"a\":\"b\"},\"fields\":{\"a\":1}}" );
string err;
int errCode;
ASSERT_EQUALS( 1, runCount( ns(), cmd, err, errCode ) );
}
};
class IndexedRegex : public Base {
public:
void run() {
insert( "{\"a\":\"b\"}" );
insert( "{\"a\":\"c\"}" );
BSONObj cmd = fromjson( "{\"query\":{\"a\":/^b/}}" );
string err;
int errCode;
ASSERT_EQUALS( 1, runCount( ns(), cmd, err, errCode ) );
}
};
/** Set a value or await an expected value. */
class PendingValue {
public:
PendingValue( int initialValue ) :
_value( initialValue ),
_mutex( "CountTests::PendingValue::_mutex" ) {
}
void set( int newValue ) {
scoped_lock lk( _mutex );
_value = newValue;
_condition.notify_all();
}
void await( int expectedValue ) const {
scoped_lock lk( _mutex );
while( _value != expectedValue ) {
_condition.wait( lk.boost() );
}
}
private:
int _value;
mutable mongo::mutex _mutex;
mutable boost::condition _condition;
};
/** A writer client will be registered for the lifetime of an object of this class. */
class WriterClientScope {
public:
WriterClientScope() :
_state( Initial ),
_dummyWriter( boost::bind( &WriterClientScope::runDummyWriter, this ) ) {
_state.await( Ready );
}
~WriterClientScope() {
// Terminate the writer thread even on exception.
_state.set( Finished );
DESTRUCTOR_GUARD( _dummyWriter.join() );
}
private:
enum State {
Initial,
Ready,
Finished
};
void runDummyWriter() {
Client::initThread( "dummy writer" );
scoped_ptr<Acquiring> a( new Acquiring( 0 , cc().lockState() ) );
_state.set( Ready );
_state.await( Finished );
a.reset(0);
cc().shutdown();
}
PendingValue _state;
boost::thread _dummyWriter;
};
/**
* The runCount() function yields deterministically with sufficient cursor iteration and a
* mutually exclusive thread awaiting its mutex. SERVER-5428
*/
class Yield : public Base {
public:
void run() {
// Insert enough documents that counting them will exceed the iteration threshold
// to trigger a yield.
for( int i = 0; i < 1000; ++i ) {
insert( BSON( "a" << 1 ) );
}
// Call runCount() under a read lock.
dbtemprelease release;
Client::ReadContext ctx( ns() );
int numYieldsBeforeCount = numYields();
string err;
int errCode;
ASSERT_EQUALS( 1000, runCount( ns(), countCommand( BSON( "a" << 1 ) ), err, errCode ) );
ASSERT_EQUALS( "", err );
int numYieldsAfterCount = numYields();
int numYieldsDuringCount = numYieldsAfterCount - numYieldsBeforeCount;
// The runCount() function yieled.
ASSERT_NOT_EQUALS( 0, numYieldsDuringCount );
ASSERT( 0 < numYieldsDuringCount );
}
private:
int numYields() const {
return cc().curop()->infoNoauth()[ "numYields" ].Int();
}
// A writer client is registered while the test runs, causing runCount() to yield.
WriterClientScope _writer;
};
class All : public Suite {
public:
All() : Suite( "count" ) {
}
void setupTests() {
add<Basic>();
add<Query>();
add<Fields>();
add<QueryFields>();
add<IndexedRegex>();
add<Yield>();
}
} myall;
} // namespace CountTests
|
