/**
 *    Copyright (C) 2012 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/>.
 *
 *    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.
 */

#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kDefault

#include "mongo/dbtests/config_server_fixture.h"

#include <boost/scoped_ptr.hpp>
#include <list>

#include "mongo/dbtests/dbtests.h"
#include "mongo/s/config.h"
#include "mongo/s/distlock.h"
#include "mongo/s/type_changelog.h"
#include "mongo/s/type_chunk.h"
#include "mongo/s/type_collection.h"
#include "mongo/s/type_config_version.h"
#include "mongo/s/type_database.h"
#include "mongo/s/type_mongos.h"
#include "mongo/s/type_shard.h"
#include "mongo/util/log.h"

namespace mongo {

    using boost::scoped_ptr;
    using std::list;

    ConfigServerFixture::ConfigServerFixture()
        : _client(&_txn),
          _connectHook(NULL) {

    }

    void ConfigServerFixture::setUp() {
        DBException::traceExceptions = true;

        // Make all connections redirect to the direct client
        _connectHook = new CustomConnectHook(&_txn);
        ConnectionString::setConnectionHook(_connectHook);
        // Disable the lock pinger
        setLockPingerEnabled(false);

        // Create the default config database before querying, necessary for direct connections
        clearServer();
        _client.insert("config.test", BSON( "hello" << "world" ));
        _client.dropCollection("config.test");

        // Create an index over the chunks, to allow correct diffing
        ASSERT_OK(dbtests::createIndex(&_txn,
                                       ChunkType::ConfigNS,
                                       BSON( ChunkType::ns() << 1 <<
                                             ChunkType::DEPRECATED_lastmod() << 1 )));
        configServer.init(configSvr().toString());
    }

    void ConfigServerFixture::clearServer() {
        _client.dropDatabase("config");
    }

    void ConfigServerFixture::clearVersion() {
        _client.dropCollection(VersionType::ConfigNS);
    }

    void ConfigServerFixture::clearShards() {
        _client.dropCollection(ShardType::ConfigNS);
    }

    void ConfigServerFixture::clearDatabases() {
        _client.dropCollection(DatabaseType::ConfigNS);
    }

    void ConfigServerFixture::clearCollections() {
        _client.dropCollection(CollectionType::ConfigNS);
    }

    void ConfigServerFixture::clearChunks() {
        _client.dropCollection(ChunkType::ConfigNS);
    }

    void ConfigServerFixture::clearPings() {
        _client.dropCollection(MongosType::ConfigNS);
    }

    void ConfigServerFixture::clearChangelog() {
        _client.dropCollection(ChangelogType::ConfigNS);
    }

    void ConfigServerFixture::dumpServer() {

        log() << "Dumping virtual config server to log..." << endl;

        list<string> collectionNames(_client.getCollectionNames("config"));

        for (list<string>::iterator it = collectionNames.begin(); it != collectionNames.end(); ++it)
        {
            const string& collection = *it;

            scoped_ptr<DBClientCursor> cursor(_client.query(collection, BSONObj()).release());
            ASSERT(cursor.get() != NULL);

            log() << "Dumping collection " << collection << endl;

            while (cursor->more()) {
                BSONObj obj = cursor->nextSafe();
                log() << obj.toString() << endl;
            }
        }
    }

    void ConfigServerFixture::tearDown() {

        clearServer();

        // Reset the pinger
        setLockPingerEnabled(true);

        // Make all connections redirect to the direct client
        ConnectionString::setConnectionHook(NULL);
        delete _connectHook;
        _connectHook = NULL;

        DBException::traceExceptions = false;
    }

}