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/**
* 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/s/catalog/type_shard.h"
#include "mongo/base/status_with.h"
#include "mongo/bson/bsonobj.h"
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/bson/util/bson_extract.h"
#include "mongo/s/grid.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/mongoutils/str.h"
namespace mongo {
const NamespaceString ShardType::ConfigNS("config.shards");
const BSONField<std::string> ShardType::name("_id");
const BSONField<std::string> ShardType::host("host");
const BSONField<bool> ShardType::draining("draining");
const BSONField<long long> ShardType::maxSizeMB("maxSize");
const BSONField<BSONArray> ShardType::tags("tags");
const BSONField<ShardType::ShardState> ShardType::state("state");
StatusWith<ShardType> ShardType::fromBSON(const BSONObj& source) {
ShardType shard;
{
std::string shardName;
Status status = bsonExtractStringField(source, name.name(), &shardName);
if (!status.isOK())
return status;
shard._name = shardName;
}
{
std::string shardHost;
Status status = bsonExtractStringField(source, host.name(), &shardHost);
if (!status.isOK())
return status;
shard._host = shardHost;
}
{
bool isShardDraining;
Status status = bsonExtractBooleanField(source, draining.name(), &isShardDraining);
if (status.isOK()) {
shard._draining = isShardDraining;
} else if (status == ErrorCodes::NoSuchKey) {
// draining field can be mssing in which case it is presumed false
} else {
return status;
}
}
{
long long shardMaxSizeMB;
// maxSizeMB == 0 means there's no limitation to space usage.
Status status = bsonExtractIntegerField(source, maxSizeMB.name(), &shardMaxSizeMB);
if (status.isOK()) {
shard._maxSizeMB = shardMaxSizeMB;
} else if (status == ErrorCodes::NoSuchKey) {
// maxSizeMB field can be missing in which case it is presumed false
} else {
return status;
}
}
if (source.hasField(tags.name())) {
shard._tags = std::vector<std::string>();
BSONElement tagsElement;
Status status = bsonExtractTypedField(source, tags.name(), Array, &tagsElement);
if (!status.isOK())
return status;
BSONObjIterator it(tagsElement.Obj());
while (it.more()) {
BSONElement tagElement = it.next();
if (tagElement.type() != String) {
return Status(ErrorCodes::TypeMismatch,
str::stream() << "Elements in \"" << tags.name()
<< "\" array must be strings but found "
<< typeName(tagElement.type()));
}
shard._tags->push_back(tagElement.String());
}
}
{
long long shardState;
Status status = bsonExtractIntegerField(source, state.name(), &shardState);
if (status.isOK()) {
// Make sure the state field falls within the valid range of ShardState values.
if (!(shardState >= static_cast<std::underlying_type<ShardState>::type>(
ShardState::kNotShardAware) &&
shardState <= static_cast<std::underlying_type<ShardState>::type>(
ShardState::kShardAware))) {
return Status(ErrorCodes::BadValue,
str::stream() << "Invalid shard state value: " << shardState);
} else {
shard._state = static_cast<ShardState>(shardState);
}
} else if (status == ErrorCodes::NoSuchKey) {
// state field can be mssing in which case it is presumed kNotShardAware
} else {
return status;
}
}
return shard;
}
Status ShardType::validate() const {
if (!_name.is_initialized() || _name->empty()) {
return Status(ErrorCodes::NoSuchKey,
str::stream() << "missing " << name.name() << " field");
}
if (!_host.is_initialized() || _host->empty()) {
return Status(ErrorCodes::NoSuchKey,
str::stream() << "missing " << host.name() << " field");
}
if (_maxSizeMB.is_initialized() && getMaxSizeMB() < 0) {
return Status(ErrorCodes::BadValue, str::stream() << "maxSize can't be negative");
}
return Status::OK();
}
BSONObj ShardType::toBSON() const {
BSONObjBuilder builder;
if (_name)
builder.append(name(), getName());
if (_host)
builder.append(host(), getHost());
if (_draining)
builder.append(draining(), getDraining());
if (_maxSizeMB)
builder.append(maxSizeMB(), getMaxSizeMB());
if (_tags)
builder.append(tags(), getTags());
if (_state)
builder.append(state(), static_cast<std::underlying_type<ShardState>::type>(getState()));
return builder.obj();
}
std::string ShardType::toString() const {
return toBSON().toString();
}
void ShardType::setName(const std::string& name) {
_name = name;
}
void ShardType::setHost(const std::string& host) {
invariant(!host.empty());
_host = host;
}
void ShardType::setDraining(const bool isDraining) {
_draining = isDraining;
}
void ShardType::setMaxSizeMB(const long long maxSizeMB) {
invariant(maxSizeMB >= 0);
_maxSizeMB = maxSizeMB;
}
void ShardType::setTags(const std::vector<std::string>& tags) {
invariant(tags.size() > 0);
_tags = tags;
}
void ShardType::setState(const ShardState state) {
invariant(!_state.is_initialized());
_state = state;
}
} // namespace mongo
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