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#include <Common/ProfileEvents.h>
#include <Common/ZooKeeper/IKeeper.h>
namespace DB
{
namespace ErrorCodes
{
extern const int KEEPER_EXCEPTION;
}
}
namespace ProfileEvents
{
extern const Event ZooKeeperUserExceptions;
extern const Event ZooKeeperHardwareExceptions;
extern const Event ZooKeeperOtherExceptions;
}
namespace Coordination
{
void Exception::incrementErrorMetrics(const Error code_)
{
if (Coordination::isUserError(code_))
ProfileEvents::increment(ProfileEvents::ZooKeeperUserExceptions);
else if (Coordination::isHardwareError(code_))
ProfileEvents::increment(ProfileEvents::ZooKeeperHardwareExceptions);
else
ProfileEvents::increment(ProfileEvents::ZooKeeperOtherExceptions);
}
Exception::Exception(const std::string & msg, const Error code_, int)
: DB::Exception(msg, DB::ErrorCodes::KEEPER_EXCEPTION)
, code(code_)
{
incrementErrorMetrics(code);
}
Exception::Exception(PreformattedMessage && msg, const Error code_)
: DB::Exception(std::move(msg), DB::ErrorCodes::KEEPER_EXCEPTION)
, code(code_)
{
extendedMessage(errorMessage(code));
incrementErrorMetrics(code);
}
Exception::Exception(const Error code_)
: Exception(code_, "Coordination error: {}", errorMessage(code_))
{
}
Exception::Exception(const Exception & exc) = default;
using namespace DB;
static void addRootPath(String & path, const String & root_path)
{
if (path.empty())
throw Exception::fromMessage(Error::ZBADARGUMENTS, "Path cannot be empty");
if (path[0] != '/')
throw Exception(Error::ZBADARGUMENTS, "Path must begin with /, got path '{}'", path);
if (root_path.empty())
return;
if (path.size() == 1) /// "/"
path = root_path;
else
path = root_path + path;
}
static void removeRootPath(String & path, const String & root_path)
{
if (root_path.empty())
return;
if (path.size() <= root_path.size())
throw Exception::fromMessage(Error::ZDATAINCONSISTENCY, "Received path is not longer than root_path");
path = path.substr(root_path.size());
}
const char * errorMessage(Error code)
{
switch (code)
{
case Error::ZOK: return "Ok";
case Error::ZSYSTEMERROR: return "System error";
case Error::ZRUNTIMEINCONSISTENCY: return "Run time inconsistency";
case Error::ZDATAINCONSISTENCY: return "Data inconsistency";
case Error::ZCONNECTIONLOSS: return "Connection loss";
case Error::ZMARSHALLINGERROR: return "Marshalling error";
case Error::ZUNIMPLEMENTED: return "Unimplemented";
case Error::ZOPERATIONTIMEOUT: return "Operation timeout";
case Error::ZBADARGUMENTS: return "Bad arguments";
case Error::ZINVALIDSTATE: return "Invalid zhandle state";
case Error::ZAPIERROR: return "API error";
case Error::ZNONODE: return "No node";
case Error::ZNOAUTH: return "Not authenticated";
case Error::ZBADVERSION: return "Bad version";
case Error::ZNOCHILDRENFOREPHEMERALS: return "No children for ephemerals";
case Error::ZNODEEXISTS: return "Node exists";
case Error::ZNOTEMPTY: return "Not empty";
case Error::ZSESSIONEXPIRED: return "Session expired";
case Error::ZINVALIDCALLBACK: return "Invalid callback";
case Error::ZINVALIDACL: return "Invalid ACL";
case Error::ZAUTHFAILED: return "Authentication failed";
case Error::ZCLOSING: return "ZooKeeper is closing";
case Error::ZNOTHING: return "(not error) no server responses to process";
case Error::ZSESSIONMOVED: return "Session moved to another server, so operation is ignored";
}
UNREACHABLE();
}
bool isHardwareError(Error zk_return_code)
{
return zk_return_code == Error::ZINVALIDSTATE
|| zk_return_code == Error::ZSESSIONEXPIRED
|| zk_return_code == Error::ZSESSIONMOVED
|| zk_return_code == Error::ZCONNECTIONLOSS
|| zk_return_code == Error::ZMARSHALLINGERROR
|| zk_return_code == Error::ZOPERATIONTIMEOUT;
}
bool isUserError(Error zk_return_code)
{
return zk_return_code == Error::ZNONODE
|| zk_return_code == Error::ZBADVERSION
|| zk_return_code == Error::ZNOCHILDRENFOREPHEMERALS
|| zk_return_code == Error::ZNODEEXISTS
|| zk_return_code == Error::ZNOTEMPTY;
}
void CreateRequest::addRootPath(const String & root_path) { Coordination::addRootPath(path, root_path); }
void RemoveRequest::addRootPath(const String & root_path) { Coordination::addRootPath(path, root_path); }
void ExistsRequest::addRootPath(const String & root_path) { Coordination::addRootPath(path, root_path); }
void GetRequest::addRootPath(const String & root_path) { Coordination::addRootPath(path, root_path); }
void SetRequest::addRootPath(const String & root_path) { Coordination::addRootPath(path, root_path); }
void ListRequest::addRootPath(const String & root_path) { Coordination::addRootPath(path, root_path); }
void CheckRequest::addRootPath(const String & root_path) { Coordination::addRootPath(path, root_path); }
void SetACLRequest::addRootPath(const String & root_path) { Coordination::addRootPath(path, root_path); }
void GetACLRequest::addRootPath(const String & root_path) { Coordination::addRootPath(path, root_path); }
void SyncRequest::addRootPath(const String & root_path) { Coordination::addRootPath(path, root_path); }
void MultiRequest::addRootPath(const String & root_path)
{
for (auto & request : requests)
request->addRootPath(root_path);
}
void CreateResponse::removeRootPath(const String & root_path) { Coordination::removeRootPath(path_created, root_path); }
void WatchResponse::removeRootPath(const String & root_path) { Coordination::removeRootPath(path, root_path); }
void MultiResponse::removeRootPath(const String & root_path)
{
for (auto & response : responses)
response->removeRootPath(root_path);
}
}
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