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// @file balancer_policy_test.cpp
/**
* 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"
// TODO SERVER-1822
//#include "../s/config.h" // for ShardFields
//#include "../s/balancer_policy.h"
namespace BalancerPolicyTests {
//
// TODO SERVER-1822
//
#if 0
typedef mongo::ShardFields sf; // fields from 'shards' colleciton
typedef mongo::LimitsFields lf; // fields from the balancer's limits map
class SizeMaxedShardTest {
public:
void run() {
BSONObj shard0 = BSON( sf::maxSize(0LL) << lf::currSize(0LL) );
ASSERT( ! BalancerPolicy::isSizeMaxed( shard0 ) );
BSONObj shard1 = BSON( sf::maxSize(100LL) << lf::currSize(80LL) );
ASSERT( ! BalancerPolicy::isSizeMaxed( shard1 ) );
BSONObj shard2 = BSON( sf::maxSize(100LL) << lf::currSize(110LL) );
ASSERT( BalancerPolicy::isSizeMaxed( shard2 ) );
BSONObj empty;
ASSERT( ! BalancerPolicy::isSizeMaxed( empty ) );
}
};
class DrainingShardTest {
public:
void run() {
BSONObj shard0 = BSON( sf::draining(true) );
ASSERT( BalancerPolicy::isDraining( shard0 ) );
BSONObj shard1 = BSON( sf::draining(false) );
ASSERT( ! BalancerPolicy::isDraining( shard1 ) );
BSONObj empty;
ASSERT( ! BalancerPolicy::isDraining( empty ) );
}
};
class BalanceNormalTest {
public:
void run() {
// 2 chunks and 0 chunk shards
BalancerPolicy::ShardToChunksMap chunkMap;
vector<BSONObj> chunks;
chunks.push_back(BSON( "min" << BSON( "x" << BSON( "$minKey"<<1) ) <<
"max" << BSON( "x" << 49 )));
chunks.push_back(BSON( "min" << BSON( "x" << 49 ) <<
"max" << BSON( "x" << BSON( "$maxkey"<<1 ))));
chunkMap["shard0"] = chunks;
chunks.clear();
chunkMap["shard1"] = chunks;
// no limits
BalancerPolicy::ShardToLimitsMap limitsMap;
BSONObj limits0 = BSON( sf::maxSize(0LL) << lf::currSize(2LL) << sf::draining(false) << lf::hasOpsQueued(false) );
BSONObj limits1 = BSON( sf::maxSize(0LL) << lf::currSize(0LL) << sf::draining(false) << lf::hasOpsQueued(false) );
limitsMap["shard0"] = limits0;
limitsMap["shard1"] = limits1;
BalancerPolicy::ChunkInfo* c = NULL;
c = BalancerPolicy::balance( "ns", limitsMap, chunkMap, 1 );
ASSERT( c );
}
};
class BalanceDrainingTest {
public:
void run() {
// one normal, one draining
// 2 chunks and 0 chunk shards
BalancerPolicy::ShardToChunksMap chunkMap;
vector<BSONObj> chunks;
chunks.push_back(BSON( "min" << BSON( "x" << BSON( "$minKey"<<1) ) <<
"max" << BSON( "x" << 49 )));
chunkMap["shard0"] = chunks;
chunks.clear();
chunks.push_back(BSON( "min" << BSON( "x" << 49 ) <<
"max" << BSON( "x" << BSON( "$maxkey"<<1 ))));
chunkMap["shard1"] = chunks;
// shard0 is draining
BalancerPolicy::ShardToLimitsMap limitsMap;
BSONObj limits0 = BSON( sf::maxSize(0LL) << lf::currSize(2LL) << sf::draining(true) );
BSONObj limits1 = BSON( sf::maxSize(0LL) << lf::currSize(0LL) << sf::draining(false) );
limitsMap["shard0"] = limits0;
limitsMap["shard1"] = limits1;
BalancerPolicy::ChunkInfo* c = NULL;
c = BalancerPolicy::balance( "ns", limitsMap, chunkMap, 0 );
ASSERT( c );
ASSERT_EQUALS( c->to , "shard1" );
ASSERT_EQUALS( c->from , "shard0" );
ASSERT( ! c->chunk.isEmpty() );
}
};
class BalanceEndedDrainingTest {
public:
void run() {
// 2 chunks and 0 chunk (drain completed) shards
BalancerPolicy::ShardToChunksMap chunkMap;
vector<BSONObj> chunks;
chunks.push_back(BSON( "min" << BSON( "x" << BSON( "$minKey"<<1) ) <<
"max" << BSON( "x" << 49 )));
chunks.push_back(BSON( "min" << BSON( "x" << 49 ) <<
"max" << BSON( "x" << BSON( "$maxkey"<<1 ))));
chunkMap["shard0"] = chunks;
chunks.clear();
chunkMap["shard1"] = chunks;
// no limits
BalancerPolicy::ShardToLimitsMap limitsMap;
BSONObj limits0 = BSON( sf::maxSize(0LL) << lf::currSize(2LL) << sf::draining(false) );
BSONObj limits1 = BSON( sf::maxSize(0LL) << lf::currSize(0LL) << sf::draining(true) );
limitsMap["shard0"] = limits0;
limitsMap["shard1"] = limits1;
BalancerPolicy::ChunkInfo* c = NULL;
c = BalancerPolicy::balance( "ns", limitsMap, chunkMap, 0 );
ASSERT( ! c );
}
};
class BalanceImpasseTest {
public:
void run() {
// one maxed out, one draining
// 2 chunks and 0 chunk shards
BalancerPolicy::ShardToChunksMap chunkMap;
vector<BSONObj> chunks;
chunks.push_back(BSON( "min" << BSON( "x" << BSON( "$minKey"<<1) ) <<
"max" << BSON( "x" << 49 )));
chunkMap["shard0"] = chunks;
chunks.clear();
chunks.push_back(BSON( "min" << BSON( "x" << 49 ) <<
"max" << BSON( "x" << BSON( "$maxkey"<<1 ))));
chunkMap["shard1"] = chunks;
// shard0 is draining, shard1 is maxed out, shard2 has writebacks pending
BalancerPolicy::ShardToLimitsMap limitsMap;
BSONObj limits0 = BSON( sf::maxSize(0LL) << lf::currSize(2LL) << sf::draining(true) );
BSONObj limits1 = BSON( sf::maxSize(1LL) << lf::currSize(1LL) << sf::draining(false) );
BSONObj limits2 = BSON( sf::maxSize(0LL) << lf::currSize(1LL) << lf::hasOpsQueued(true) );
limitsMap["shard0"] = limits0;
limitsMap["shard1"] = limits1;
limitsMap["shard2"] = limits2;
BalancerPolicy::ChunkInfo* c = NULL;
c = BalancerPolicy::balance( "ns", limitsMap, chunkMap, 0 );
ASSERT( ! c );
}
};
//
// TODO SERVER-1822
//
#endif // #if 0
class All : public Suite {
public:
All() : Suite( "balancer_policy" ) {
}
void setupTests() {
// TODO SERVER-1822
// add< SizeMaxedShardTest >();
// add< DrainingShardTest >();
// add< BalanceNormalTest >();
// add< BalanceDrainingTest >();
// add< BalanceEndedDrainingTest >();
// add< BalanceImpasseTest >();
}
} allTests;
} // namespace BalancerPolicyTests
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