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d_chunk_manager_tests.cpp
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d_chunk_manager_tests.cpp
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//@file d_chunk_manager_tests.cpp : s/d_chunk_manager.{h,cpp} tests
/**
* Copyright (C) 2010 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 "pch.h"
#include "dbtests.h"
#include "../s/d_chunk_manager.h"
namespace {
class BasicTests {
public:
void run() {
BSONObj collection = BSON( "_id" << "test.foo" <<
"dropped" << false <<
"key" << BSON( "a" << 1 ) <<
"unique" << false );
// single-chunk collection
BSONArray chunks = BSON_ARRAY( BSON( "_id" << "test.foo-a_MinKey" <<
"ns" << "test.foo" <<
"min" << BSON( "a" << MINKEY ) <<
"max" << BSON( "a" << MAXKEY ) ) );
ShardChunkManager s ( collection , chunks );
BSONObj k1 = BSON( "a" << MINKEY );
ASSERT( s.belongsToMe( k1 ) );
BSONObj k2 = BSON( "a" << MAXKEY );
ASSERT( ! s.belongsToMe( k2 ) );
BSONObj k3 = BSON( "a" << 1 << "b" << 2 );
ASSERT( s.belongsToMe( k3 ) );
}
};
class BasicCompoundTests {
public:
void run() {
BSONObj collection = BSON( "_id" << "test.foo" <<
"dropped" << false <<
"key" << BSON( "a" << 1 << "b" << 1) <<
"unique" << false );
// single-chunk collection
BSONArray chunks = BSON_ARRAY( BSON( "_id" << "test.foo-a_MinKeyb_MinKey" <<
"ns" << "test.foo" <<
"min" << BSON( "a" << MINKEY << "b" << MINKEY ) <<
"max" << BSON( "a" << MAXKEY << "b" << MAXKEY ) ) );
ShardChunkManager s ( collection , chunks );
BSONObj k1 = BSON( "a" << MINKEY << "b" << MINKEY );
ASSERT( s.belongsToMe( k1 ) );
BSONObj k2 = BSON( "a" << MAXKEY << "b" << MAXKEY );
ASSERT( ! s.belongsToMe( k2 ) );
BSONObj k3 = BSON( "a" << MINKEY << "b" << 10 );
ASSERT( s.belongsToMe( k3 ) );
BSONObj k4 = BSON( "a" << 10 << "b" << 20 );
ASSERT( s.belongsToMe( k4 ) );
}
};
class RangeTests {
public:
void run() {
BSONObj collection = BSON( "_id" << "x.y" <<
"dropped" << false <<
"key" << BSON( "a" << 1 ) <<
"unique" << false );
// 3-chunk collection, 2 of them being contiguous
// [min->10) , [10->20) , <gap> , [30->max)
BSONArray chunks = BSON_ARRAY( BSON( "_id" << "x.y-a_MinKey" <<
"ns" << "x.y" <<
"min" << BSON( "a" << MINKEY ) <<
"max" << BSON( "a" << 10 ) ) <<
BSON( "_id" << "x.y-a_10" <<
"ns" << "x.y" <<
"min" << BSON( "a" << 10 ) <<
"max" << BSON( "a" << 20 ) ) <<
BSON( "_id" << "x.y-a_30" <<
"ns" << "x.y" <<
"min" << BSON( "a" << 30 ) <<
"max" << BSON( "a" << MAXKEY ) ) );
ShardChunkManager s ( collection , chunks );
BSONObj k1 = BSON( "a" << 5 );
ASSERT( s.belongsToMe( k1 ) );
BSONObj k2 = BSON( "a" << 10 );
ASSERT( s.belongsToMe( k2 ) );
BSONObj k3 = BSON( "a" << 25 );
ASSERT( ! s.belongsToMe( k3 ) );
BSONObj k4 = BSON( "a" << 30 );
ASSERT( s.belongsToMe( k4 ) );
BSONObj k5 = BSON( "a" << 40 );
ASSERT( s.belongsToMe( k5 ) );
}
};
class GetNextTests {
public:
void run() {
BSONObj collection = BSON( "_id" << "x.y" <<
"dropped" << false <<
"key" << BSON( "a" << 1 ) <<
"unique" << false );
// empty collection
BSONArray chunks1 = BSONArray();
ShardChunkManager s1( collection , chunks1 );
BSONObj empty;
BSONObj arbitraryKey = BSON( "a" << 10 );
BSONObj foundMin, foundMax;
ASSERT( s1.getNextChunk( empty , &foundMin , &foundMax ) );
ASSERT( foundMin.isEmpty() );
ASSERT( foundMax.isEmpty() );
ASSERT( s1.getNextChunk( arbitraryKey , &foundMin , &foundMax ) );
ASSERT( foundMin.isEmpty() );
ASSERT( foundMax.isEmpty() );
// single-chunk collection
// [10->20]
BSONObj key_a10 = BSON( "a" << 10 );
BSONObj key_a20 = BSON( "a" << 20 );
BSONArray chunks2 = BSON_ARRAY( BSON( "_id" << "x.y-a_10" <<
"ns" << "x.y" <<
"min" << key_a10 <<
"max" << key_a20 ) );
ShardChunkManager s2( collection , chunks2 );
ASSERT( s2.getNextChunk( empty , &foundMin , &foundMax ) );
ASSERT( foundMin.woCompare( key_a10 ) == 0 );
ASSERT( foundMax.woCompare( key_a20 ) == 0 );
// 3-chunk collection, 2 of them being contiguous
// [min->10) , [10->20) , <gap> , [30->max)
BSONObj key_a30 = BSON( "a" << 30 );
BSONObj key_min = BSON( "a" << MINKEY );
BSONObj key_max = BSON( "a" << MAXKEY );
BSONArray chunks3 = BSON_ARRAY( BSON( "_id" << "x.y-a_MinKey" <<
"ns" << "x.y" <<
"min" << key_min <<
"max" << key_a10 ) <<
BSON( "_id" << "x.y-a_10" <<
"ns" << "x.y" <<
"min" << key_a10 <<
"max" << key_a20 ) <<
BSON( "_id" << "x.y-a_30" <<
"ns" << "x.y" <<
"min" << key_a30 <<
"max" << key_max ) );
ShardChunkManager s3( collection , chunks3 );
ASSERT( ! s3.getNextChunk( empty , &foundMin , &foundMax ) ); // not eof
ASSERT( foundMin.woCompare( key_min ) == 0 );
ASSERT( foundMax.woCompare( key_a10 ) == 0 );
ASSERT( ! s3.getNextChunk( key_a10 , &foundMin , &foundMax ) );
ASSERT( foundMin.woCompare( key_a30 ) == 0 );
ASSERT( foundMax.woCompare( key_max ) == 0 );
ASSERT( s3.getNextChunk( key_a30 , &foundMin , &foundMax ) );
}
};
class DeletedTests {
public:
void run() {
BSONObj collection = BSON( "_id" << "test.foo" <<
"dropped" << "true" );
BSONArray chunks = BSONArray();
ASSERT_EXCEPTION( ShardChunkManager s ( collection , chunks ) , UserException );
}
};
class ClonePlusTests {
public:
void run() {
BSONObj collection = BSON( "_id" << "test.foo" <<
"dropped" << false <<
"key" << BSON( "a" << 1 << "b" << 1 ) <<
"unique" << false );
// 1-chunk collection
// [10,0-20,0)
BSONArray chunks = BSON_ARRAY( BSON( "_id" << "test.foo-a_MinKey" <<
"ns" << "test.foo" <<
"min" << BSON( "a" << 10 << "b" << 0 ) <<
"max" << BSON( "a" << 20 << "b" << 0 ) ) );
ShardChunkManager s ( collection , chunks );
// new chunk [20,0-30,0)
BSONObj min = BSON( "a" << 20 << "b" << 0 );
BSONObj max = BSON( "a" << 30 << "b" << 0 );
ShardChunkManagerPtr cloned( s.clonePlus( min , max , 1 /* TODO test version */ ) );
BSONObj k1 = BSON( "a" << 5 << "b" << 0 );
ASSERT( ! cloned->belongsToMe( k1 ) );
BSONObj k2 = BSON( "a" << 20 << "b" << 0 );
ASSERT( cloned->belongsToMe( k2 ) );
BSONObj k3 = BSON( "a" << 25 << "b" << 0 );
ASSERT( cloned->belongsToMe( k3 ) );
BSONObj k4 = BSON( "a" << 30 << "b" << 0 );
ASSERT( ! cloned->belongsToMe( k4 ) );
}
};
class ClonePlusExceptionTests {
public:
void run() {
BSONObj collection = BSON( "_id" << "test.foo" <<
"dropped" << false <<
"key" << BSON( "a" << 1 << "b" << 1 ) <<
"unique" << false );
// 1-chunk collection
// [10,0-20,0)
BSONArray chunks = BSON_ARRAY( BSON( "_id" << "test.foo-a_MinKey" <<
"ns" << "test.foo" <<
"min" << BSON( "a" << 10 << "b" << 0 ) <<
"max" << BSON( "a" << 20 << "b" << 0 ) ) );
ShardChunkManager s ( collection , chunks );
// [15,0-25,0) overlaps [10,0-20,0)
BSONObj min = BSON( "a" << 15 << "b" << 0 );
BSONObj max = BSON( "a" << 25 << "b" << 0 );
ASSERT_EXCEPTION( s.clonePlus ( min , max , 1 /* TODO test version */ ) , UserException );
}
};
class CloneMinusTests {
public:
void run() {
BSONObj collection = BSON( "_id" << "x.y" <<
"dropped" << false <<
"key" << BSON( "a" << 1 << "b" << 1 ) <<
"unique" << false );
// 2-chunk collection
// [10,0->20,0) , <gap> , [30,0->40,0)
BSONArray chunks = BSON_ARRAY( BSON( "_id" << "x.y-a_10b_0" <<
"ns" << "x.y" <<
"min" << BSON( "a" << 10 << "b" << 0 ) <<
"max" << BSON( "a" << 20 << "b" << 0 ) ) <<
BSON( "_id" << "x.y-a_30b_0" <<
"ns" << "x.y" <<
"min" << BSON( "a" << 30 << "b" << 0 ) <<
"max" << BSON( "a" << 40 << "b" << 0 ) ) );
ShardChunkManager s ( collection , chunks );
// deleting chunk [10,0-20,0)
BSONObj min = BSON( "a" << 10 << "b" << 0 );
BSONObj max = BSON( "a" << 20 << "b" << 0 );
ShardChunkManagerPtr cloned( s.cloneMinus( min , max , 1 /* TODO test version */ ) );
BSONObj k1 = BSON( "a" << 5 << "b" << 0 );
ASSERT( ! cloned->belongsToMe( k1 ) );
BSONObj k2 = BSON( "a" << 15 << "b" << 0 );
ASSERT( ! cloned->belongsToMe( k2 ) );
BSONObj k3 = BSON( "a" << 30 << "b" << 0 );
ASSERT( cloned->belongsToMe( k3 ) );
BSONObj k4 = BSON( "a" << 35 << "b" << 0 );
ASSERT( cloned->belongsToMe( k4 ) );
BSONObj k5 = BSON( "a" << 40 << "b" << 0 );
ASSERT( ! cloned->belongsToMe( k5 ) );
}
};
class CloneMinusExceptionTests {
public:
void run() {
BSONObj collection = BSON( "_id" << "x.y" <<
"dropped" << false <<
"key" << BSON( "a" << 1 << "b" << 1 ) <<
"unique" << false );
// 2-chunk collection
// [10,0->20,0) , <gap> , [30,0->40,0)
BSONArray chunks = BSON_ARRAY( BSON( "_id" << "x.y-a_10b_0" <<
"ns" << "x.y" <<
"min" << BSON( "a" << 10 << "b" << 0 ) <<
"max" << BSON( "a" << 20 << "b" << 0 ) ) <<
BSON( "_id" << "x.y-a_30b_0" <<
"ns" << "x.y" <<
"min" << BSON( "a" << 30 << "b" << 0 ) <<
"max" << BSON( "a" << 40 << "b" << 0 ) ) );
ShardChunkManager s ( collection , chunks );
// deleting non-existing chunk [25,0-28,0)
BSONObj min1 = BSON( "a" << 25 << "b" << 0 );
BSONObj max1 = BSON( "a" << 28 << "b" << 0 );
ASSERT_EXCEPTION( s.cloneMinus( min1 , max1 , 1 /* TODO test version */ ) , UserException );
// deletin an overlapping range (not exactly a chunk) [15,0-25,0)
BSONObj min2 = BSON( "a" << 15 << "b" << 0 );
BSONObj max2 = BSON( "a" << 25 << "b" << 0 );
ASSERT_EXCEPTION( s.cloneMinus( min2 , max2 , 1 /* TODO test version */ ) , UserException );
}
};
class CloneSplitTests {
public:
void run() {
BSONObj collection = BSON( "_id" << "test.foo" <<
"dropped" << false <<
"key" << BSON( "a" << 1 << "b" << 1 ) <<
"unique" << false );
// 1-chunk collection
// [10,0-20,0)
BSONObj min = BSON( "a" << 10 << "b" << 0 );
BSONObj max = BSON( "a" << 20 << "b" << 0 );
BSONArray chunks = BSON_ARRAY( BSON( "_id" << "test.foo-a_MinKey"
<< "ns" << "test.foo"
<< "min" << min
<< "max" << max ) );
ShardChunkManager s ( collection , chunks );
BSONObj split1 = BSON( "a" << 15 << "b" << 0 );
BSONObj split2 = BSON( "a" << 18 << "b" << 0 );
vector<BSONObj> splitKeys;
splitKeys.push_back( split1 );
splitKeys.push_back( split2 );
ShardChunkVersion version( 1 , 99 ); // first chunk 1|99 , second 1|100
ShardChunkManagerPtr cloned( s.cloneSplit( min , max , splitKeys , version ) );
version.incMinor(); /* second chunk 1|100, first split point */
version.incMinor(); /* third chunk 1|101, second split point */
ASSERT_EQUALS( cloned->getVersion() , version /* 1|101 */ );
ASSERT_EQUALS( s.getNumChunks() , 1u );
ASSERT_EQUALS( cloned->getNumChunks() , 3u );
ASSERT( cloned->belongsToMe( min ) );
ASSERT( cloned->belongsToMe( split1 ) );
ASSERT( cloned->belongsToMe( split2 ) );
ASSERT( ! cloned->belongsToMe( max ) );
}
};
class CloneSplitExceptionTests {
public:
void run() {
BSONObj collection = BSON( "_id" << "test.foo" <<
"dropped" << false <<
"key" << BSON( "a" << 1 << "b" << 1 ) <<
"unique" << false );
// 1-chunk collection
// [10,0-20,0)
BSONObj min = BSON( "a" << 10 << "b" << 0 );
BSONObj max = BSON( "a" << 20 << "b" << 0 );
BSONArray chunks = BSON_ARRAY( BSON( "_id" << "test.foo-a_MinKey"
<< "ns" << "test.foo"
<< "min" << min
<< "max" << max ) );
ShardChunkManager s ( collection , chunks );
BSONObj badSplit = BSON( "a" << 5 << "b" << 0 );
vector<BSONObj> splitKeys;
splitKeys.push_back( badSplit );
ASSERT_EXCEPTION( s.cloneSplit( min , max , splitKeys , ShardChunkVersion( 1 ) ) , UserException );
BSONObj badMax = BSON( "a" << 25 << "b" << 0 );
BSONObj split = BSON( "a" << 15 << "b" << 0 );
splitKeys.clear();
splitKeys.push_back( split );
ASSERT_EXCEPTION( s.cloneSplit( min , badMax, splitKeys , ShardChunkVersion( 1 ) ) , UserException );
}
};
class EmptyShardTests {
public:
void run() {
BSONObj collection = BSON( "_id" << "test.foo" <<
"dropped" << false <<
"key" << BSON( "a" << 1 ) <<
"unique" << false );
// no chunks on this shard
BSONArray chunks;
// shard can have zero chunks for an existing collection
// version should be 0, though
ShardChunkManager s( collection , chunks );
ASSERT_EQUALS( s.getVersion() , ShardChunkVersion( 0 ) );
ASSERT_EQUALS( s.getNumChunks() , 0u );
}
};
class LastChunkTests {
public:
void run() {
BSONObj collection = BSON( "_id" << "test.foo" <<
"dropped" << false <<
"key" << BSON( "a" << 1 ) <<
"unique" << false );
// 1-chunk collection
// [10->20)
BSONArray chunks = BSON_ARRAY( BSON( "_id" << "test.foo-a_10" <<
"ns" << "test.foo" <<
"min" << BSON( "a" << 10 ) <<
"max" << BSON( "a" << 20 ) ) );
ShardChunkManager s( collection , chunks );
BSONObj min = BSON( "a" << 10 );
BSONObj max = BSON( "a" << 20 );
// if we remove the only chunk, the only version accepted is 0
ShardChunkVersion nonZero = 99;
ASSERT_EXCEPTION( s.cloneMinus( min , max , nonZero ) , UserException );
ShardChunkManagerPtr empty( s.cloneMinus( min , max , 0 ) );
ASSERT_EQUALS( empty->getVersion() , ShardChunkVersion( 0 ) );
ASSERT_EQUALS( empty->getNumChunks() , 0u );
BSONObj k = BSON( "a" << 15 << "b" << 0 );
ASSERT( ! empty->belongsToMe( k ) );
// we can add a chunk to an empty manager
// version should be provided
ASSERT_EXCEPTION( empty->clonePlus( min , max , 0 ) , UserException );
ShardChunkManagerPtr cloned( empty->clonePlus( min , max , nonZero ) );
ASSERT_EQUALS( cloned->getVersion(), nonZero );
ASSERT_EQUALS( cloned->getNumChunks() , 1u );
ASSERT( cloned->belongsToMe( k ) );
}
};
class ShardChunkManagerSuite : public Suite {
public:
ShardChunkManagerSuite() : Suite ( "shard_chunk_manager" ) {}
void setupTests() {
add< BasicTests >();
add< BasicCompoundTests >();
add< RangeTests >();
add< GetNextTests >();
add< DeletedTests >();
add< ClonePlusTests >();
add< ClonePlusExceptionTests >();
add< CloneMinusTests >();
add< CloneMinusExceptionTests >();
add< CloneSplitTests >();
add< CloneSplitExceptionTests >();
add< EmptyShardTests >();
add< LastChunkTests >();
}
} shardChunkManagerSuite;
} // anonymous namespace