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/**
* Copyright (C) 2016 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/index_catalog.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/index/index_access_method.h"
#include "mongo/db/index/index_descriptor.h"
#include "mongo/db/stats/storage_stats.h"
namespace mongo {
Status appendCollectionStorageStats(OperationContext* opCtx,
const NamespaceString& nss,
const BSONObj& param,
BSONObjBuilder* result) {
int scale = 1;
if (param["scale"].isNumber()) {
scale = param["scale"].numberInt();
if (scale < 1) {
return {ErrorCodes::BadValue, "scale has to be >= 1"};
}
} else if (param["scale"].trueValue()) {
return {ErrorCodes::BadValue, "scale has to be a number >= 1"};
}
bool verbose = param["verbose"].trueValue();
AutoGetCollectionForReadCommand ctx(opCtx, nss);
if (!ctx.getDb()) {
return {ErrorCodes::BadValue,
str::stream() << "Database [" << nss.db().toString() << "] not found."};
}
Collection* collection = ctx.getCollection();
if (!collection) {
return {ErrorCodes::BadValue,
str::stream() << "Collection [" << nss.toString() << "] not found."};
}
long long size = collection->dataSize(opCtx) / scale;
result->appendNumber("size", size);
long long numRecords = collection->numRecords(opCtx);
result->appendNumber("count", numRecords);
if (numRecords)
result->append("avgObjSize", collection->averageObjectSize(opCtx));
RecordStore* recordStore = collection->getRecordStore();
result->appendNumber(
"storageSize",
static_cast<long long>(recordStore->storageSize(opCtx, result, verbose ? 1 : 0)) / scale);
recordStore->appendCustomStats(opCtx, result, scale);
IndexCatalog* indexCatalog = collection->getIndexCatalog();
result->append("nindexes", indexCatalog->numIndexesReady(opCtx));
BSONObjBuilder indexDetails;
IndexCatalog::IndexIterator i = indexCatalog->getIndexIterator(opCtx, false);
while (i.more()) {
const IndexDescriptor* descriptor = i.next();
IndexAccessMethod* iam = indexCatalog->getIndex(descriptor);
invariant(iam);
BSONObjBuilder bob;
if (iam->appendCustomStats(opCtx, &bob, scale)) {
indexDetails.append(descriptor->indexName(), bob.obj());
}
}
result->append("indexDetails", indexDetails.obj());
BSONObjBuilder indexSizes;
long long indexSize = collection->getIndexSize(opCtx, &indexSizes, scale);
result->appendNumber("totalIndexSize", indexSize / scale);
result->append("indexSizes", indexSizes.obj());
return Status::OK();
}
} // namespace mongo
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