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arangodb/arangod/Actions/actions.h

115 lines
3.3 KiB
C++

////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
////////////////////////////////////////////////////////////////////////////////
#ifndef ARANGOD_ACTIONS_ACTIONS_H
#define ARANGOD_ACTIONS_ACTIONS_H 1
#include "Basics/Common.h"
#include "Basics/Mutex.h"
struct TRI_vocbase_t;
namespace arangodb {
class GeneralRequest;
class GeneralResponse;
} // namespace arangodb
/// @brief action result
class TRI_action_result_t {
public:
TRI_action_result_t() : isValid(false), canceled(false) {}
bool isValid;
bool canceled;
};
/// @brief action descriptor
class TRI_action_t {
public:
TRI_action_t() :
_urlParts(0),
_isPrefix(false),
_allowUseDatabase(false),
_isSystem(false) {}
virtual ~TRI_action_t() {}
virtual void visit(void*) = 0;
virtual TRI_action_result_t execute(TRI_vocbase_t*, arangodb::GeneralRequest*,
arangodb::GeneralResponse*,
arangodb::Mutex* dataLock, void** data) = 0;
virtual bool cancel(arangodb::Mutex* dataLock, void** data) = 0;
void setUrl(std::string const& url, size_t urlParts) {
_url = url;
_urlParts = urlParts;
}
std::string _url;
size_t _urlParts;
bool _isPrefix;
bool _allowUseDatabase;
bool _isSystem;
};
/// @brief fake action class used only inside /_admin/execute RestHandler
class TRI_fake_action_t final : public TRI_action_t {
public:
TRI_fake_action_t(std::string const& url, size_t urlParts)
: TRI_action_t() {
setUrl(url, urlParts);
}
void visit(void*) override {}
/// @brief actions of this type are executed directly. nothing to do here
TRI_action_result_t execute(TRI_vocbase_t*, arangodb::GeneralRequest*,
arangodb::GeneralResponse*,
arangodb::Mutex*, void**) override;
/// @brief actions of this type are not registered anywhere, and thus
/// cannot be canceled
bool cancel(arangodb::Mutex*, void**) override {
return false;
}
};
/// @brief defines an action
std::shared_ptr<TRI_action_t> TRI_DefineActionVocBase(std::string const& name,
std::shared_ptr<TRI_action_t> action);
/// @brief looks up an action
std::shared_ptr<TRI_action_t> TRI_LookupActionVocBase(arangodb::GeneralRequest* request);
/// @brief deletes all defined actions
void TRI_CleanupActions();
/// @brief visit all actions
void TRI_VisitActions(std::function<void(TRI_action_t*)> const& visitor);
#endif