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#pragma once
#include "types.hpp"
#include "Key.hpp"
#include "DataView.hpp"
#include "DatabaseStorage.hpp"
#include "Hash.hpp"
#include "utils.hpp"
#include "StagedObject.hpp"
#include "Signature.hpp"
#include "Permission.hpp"
#include "DatabaseNode.hpp"
#include "Encryption.hpp"
#include "OwnedMemory.hpp"
#include "DatabaseOperation.hpp"
#include <opendht/dhtrunner.h>
#include <vector>
#include <ntp/NtpClient.hpp>
#include <boost/filesystem/path.hpp>
#include <stdexcept>
#include <functional>
namespace odhtdb
{
class User;
class LocalUser;
class Group;
class CommitCreateException : public std::runtime_error
{
public:
CommitCreateException(const std::string &errMsg) : std::runtime_error(errMsg) {}
};
class CommitAddException : public std::runtime_error
{
public:
CommitAddException(const std::string &errMsg) : std::runtime_error(errMsg) {}
};
class DatabaseCreateException : public std::runtime_error
{
public:
DatabaseCreateException(const std::string &errMsg) : std::runtime_error(errMsg) {}
};
class DatabaseAddException : public std::runtime_error
{
public:
DatabaseAddException(const std::string &errMsg) : std::runtime_error(errMsg) {}
};
struct DatabaseCreateNodeRequest
{
DISABLE_COPY(DatabaseCreateNodeRequest)
const Hash *nodeHash;
u64 timestamp; // In microseconds
const User *creatorUser;
std::string name;
DatabaseCreateNodeRequest(const Hash *_nodeHash, u64 _timestamp, const User *_creatorUser, std::string &&_name) :
nodeHash(_nodeHash),
timestamp(_timestamp),
creatorUser(_creatorUser),
name(std::move(_name))
{
}
};
struct DatabaseAddNodeRequest
{
DISABLE_COPY(DatabaseAddNodeRequest)
const Hash *nodeHash;
const Hash *requestHash;
u64 timestamp; // In microseconds
const User *creatorUser;
const DataView decryptedData;
DatabaseAddNodeRequest(const Hash *_nodeHash, const Hash *_requestHash, u64 _timestamp, const User *_creatorUser, const DataView &_decryptedData) :
nodeHash(_nodeHash),
requestHash(_requestHash),
timestamp(_timestamp),
creatorUser(_creatorUser),
decryptedData(_decryptedData)
{
}
};
struct DatabaseAddUserRequest
{
DISABLE_COPY(DatabaseAddUserRequest)
const Hash *nodeHash;
const Hash *requestHash;
u64 timestamp; // In microseconds
const User *creatorUser;
const User *userToAdd;
const Group *groupToAddUserTo;
DatabaseAddUserRequest(const Hash *_nodeHash, const Hash *_requestHash, u64 _timestamp, const User *_creatorUser, const User *_userToAdd, const Group *_groupToAddUserTo) :
timestamp(_timestamp),
creatorUser(_creatorUser),
userToAdd(_userToAdd),
groupToAddUserTo(_groupToAddUserTo)
{
}
};
class DatabaseCreateResponse
{
public:
DatabaseCreateResponse(LocalUser *nodeAdminUser, const std::shared_ptr<OwnedMemory> &key, const std::shared_ptr<Hash> &hash);
const LocalUser* getNodeAdminUser() const;
// Size of encryption key is odhtdb::KEY_BYTE_SIZE (found in Encryption.hpp)
const std::shared_ptr<OwnedMemory> getNodeEncryptionKey() const;
const std::shared_ptr<Hash> getRequestHash() const;
private:
LocalUser *nodeAdminUser;
std::shared_ptr<OwnedMemory> key;
std::shared_ptr<Hash> hash;
};
struct DatabaseSeedInfo
{
std::shared_ptr<std::future<size_t>> newDataListenerFuture;
std::shared_ptr<std::future<size_t>> responseKeyFuture;
std::shared_ptr<std::future<size_t>> requestOldDataListenerFuture;
std::shared_ptr<dht::InfoHash> reponseKeyInfoHash;
DatabaseSeedInfo(){}
DatabaseSeedInfo(const DatabaseSeedInfo &other)
{
newDataListenerFuture = other.newDataListenerFuture;
responseKeyFuture = other.responseKeyFuture;
requestOldDataListenerFuture = other.requestOldDataListenerFuture;
reponseKeyInfoHash = other.reponseKeyInfoHash;
}
};
class Database
{
DISABLE_COPY(Database)
friend class DatabaseStorage;
public:
Database(const char *bootstrapNodeAddr, u16 port, const boost::filesystem::path &storageDir);
~Database();
// Safe to call multiple times with same node hash, will be ignored if the node is already beeing seeded
void seed(const DatabaseNode &nodeToSeed);
void stopSeeding(const Hash &nodeHash);
// Throws DatabaseCreateException on failure.
std::unique_ptr<DatabaseCreateResponse> create(const std::string &ownerName, const std::string &nodeName);
// Throws DatabaseCreateException on failure.
std::unique_ptr<DatabaseCreateResponse> create(const std::string &ownerName, const Signature::KeyPair &keyPair, const std::string &nodeName);
// Throws PermissionDeniedException if user @userToPerformActionWith is not allowed to add data to node
void addData(const DatabaseNode &nodeInfo, const LocalUser *userToPerformActionWith, DataView dataToAdd);
// Throws PermissionDeniedException if user @userToPerformActionWith is not allowed to add user @userToAdd to group @groupToAddUserTo
void addUser(const DatabaseNode &nodeInfo, LocalUser *userToPerformActionWith, const std::string &userToAddName, const Signature::PublicKey &userToAddPublicKey, Group *groupToAddUserTo);
void commit();
void setOnCreateNodeCallback(std::function<void(const DatabaseCreateNodeRequest&)> callbackFunc);
void setOnAddNodeCallback(std::function<void(const DatabaseAddNodeRequest&)> callbackFunc);
void setOnAddUserCallback(std::function<void(const DatabaseAddUserRequest&)> callbackFunc);
DatabaseStorage& getStorage();
private:
// Throws CommitCreateException on failure
void commitStagedCreateObject(const std::unique_ptr<StagedObject> &stagedObject);
// Throws CommitAddException on failure
void commitStagedAddObject(const std::unique_ptr<StagedObject> &stagedObject);
ntp::NtpTimestamp getSyncedTimestampUtc() const;
void deserializeCreateRequest(const std::shared_ptr<dht::Value> &value, const Hash &hash, const std::shared_ptr<OwnedMemory> encryptionKey);
void deserializeAddRequest(const std::shared_ptr<dht::Value> &value, const Hash &requestDataHash, const std::shared_ptr<Hash> &nodeHash, const std::shared_ptr<OwnedMemory> encryptionKey);
bool listenCreateData(std::shared_ptr<dht::Value> value, const Hash &hash, const std::shared_ptr<OwnedMemory> encryptionKey);
bool listenAddData(std::shared_ptr<dht::Value> value, const Hash &requestDataHash, const std::shared_ptr<Hash> nodeHash, const std::shared_ptr<OwnedMemory> encryptionKey);
private:
dht::DhtRunner node;
std::vector<std::unique_ptr<StagedObject>> stagedCreateObjects;
std::vector<std::unique_ptr<StagedObject>> stagedAddObjects;
DatabaseStorage databaseStorage;
std::function<void(const DatabaseCreateNodeRequest&)> onCreateNodeCallbackFunc;
std::function<void(const DatabaseAddNodeRequest&)> onAddNodeCallbackFunc;
std::function<void(const DatabaseAddUserRequest&)> onAddUserCallbackFunc;
MapHash<DatabaseSeedInfo> seedInfoMap;
};
}
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