From eda9a7bbefc5587bf1ff895a9214f450e64575fa Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Mon, 5 Mar 2018 22:45:56 +0100
Subject: Implement 'create' operation, add seeding

Seeding is currently only done on the key you specify, in the future
the user should request data that it can seed.
---
 include/Database.hpp | 121 ++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 109 insertions(+), 12 deletions(-)

(limited to 'include/Database.hpp')

diff --git a/include/Database.hpp b/include/Database.hpp
index e8b35bb..d160133 100644
--- a/include/Database.hpp
+++ b/include/Database.hpp
@@ -2,17 +2,110 @@
 
 #include "types.hpp"
 #include "Key.hpp"
-#include "StagedObject.hpp"
 #include "DataView.hpp"
 #include "DatabaseStorage.hpp"
+#include "Hash.hpp"
+#include "utils.hpp"
+#include "StagedObject.hpp"
+#include "Signature.hpp"
 #include <opendht/dhtrunner.h>
 #include <vector>
 #include <ntp/NtpClient.hpp>
 #include <boost/filesystem/path.hpp>
+#include <stdexcept>
 
 namespace odhtdb
 {
     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 DatabaseCreateRequest
+    {
+        DISABLE_COPY(DatabaseCreateRequest)
+        
+        u64 timestamp; // In microseconds
+        Group *creatorGroup;
+        std::string name;
+        
+        DatabaseCreateRequest(u64 _timestamp, Group *_creatorGroup, std::string &&_name) : 
+            timestamp(_timestamp),
+            creatorGroup(_creatorGroup),
+            name(std::move(_name))
+        {
+            
+        }
+        
+        DatabaseCreateRequest(DatabaseCreateRequest &&other)
+        {
+            timestamp = other.timestamp;
+            creatorGroup = other.creatorGroup;
+            name = std::move(other.name);
+            
+            other.timestamp = 0;
+            other.creatorGroup = nullptr;
+        }
+    };
+
+    struct DatabaseAddRequest
+    {
+        DISABLE_COPY(DatabaseAddRequest)
+        
+        u16 packetStructureVersion;
+        u64 timestamp; // In microseconds
+        Signature::PublicKey creatorPublicKey;
+        DataView data;
+        
+        DatabaseAddRequest(u16 _packetStructureVersion, u64 _timestamp, Signature::PublicKey &&_creatorPublicKey, DataView &_data) : 
+            packetStructureVersion(_packetStructureVersion),
+            timestamp(_timestamp),
+            creatorPublicKey(std::move(_creatorPublicKey)),
+            data(_data)
+        {
+            
+        }
+        
+        ~DatabaseAddRequest()
+        {
+            free(data.data);
+            data = DataView();
+        }
+    };
+    
+    class DatabaseCreateResponse
+    {
+    public:
+        DatabaseCreateResponse(const std::shared_ptr<char*> &key, const std::shared_ptr<Hash> &hash);
+        
+        const std::shared_ptr<char*> getNodeEncryptionKey() const;
+        const std::shared_ptr<Hash> getRequestHash() const;
+    private:
+        std::shared_ptr<char*> key;
+        std::shared_ptr<Hash> hash;
+    };
 
     class Database
     {
@@ -20,22 +113,26 @@ namespace odhtdb
         Database(const char *bootstrapNodeAddr, u16 port, boost::filesystem::path storageDir);
         ~Database();
 
-        void seed();
-        void create(LocalUser *owner, const Key &key);
-        void add(LocalUser *owner, const Key &key, DataView data);
+        void seed(const std::shared_ptr<Hash> hash, const std::shared_ptr<char*> encryptionKey);
+        // Throws DatabaseCreateException on failure.
+        std::unique_ptr<DatabaseCreateResponse> create(const LocalUser *owner, const std::string &name);
+        // Throws DatabaseAddException on failure
+        void add(const LocalUser *owner, const Key &key, DataView data);
         void commit();
     private:
-        void commitStagedCreateObject(const StagedCreateObject &stagedObject);
-        void commitStagedAddObject(const StagedAddObject &stagedObject);
+        // Throws CommitCreateException on failure
+        void commitStagedCreateObject(const std::unique_ptr<StagedCreateObject> &stagedObject);
+        // Throws CommitAddException on failure
+        void commitStagedAddObject(const DataView &stagedObject);
         ntp::NtpTimestamp getSyncedTimestampUtc() const;
-        StagedCreateObject deserializeCreateRequest(const std::shared_ptr<dht::Value> &value);
-        StagedAddObject deserializeAddRequest(const std::shared_ptr<dht::Value> &value);
-        bool listenCreateData(std::shared_ptr<dht::Value> value);
-        bool listenAddData(std::shared_ptr<dht::Value> value);
+        DatabaseCreateRequest deserializeCreateRequest(const std::shared_ptr<dht::Value> &value, const Hash &hash, const std::shared_ptr<char*> encryptionKey);
+        DatabaseAddRequest deserializeAddRequest(const std::shared_ptr<dht::Value> &value, const Hash &hash, const std::shared_ptr<char*> encryptionKey);
+        bool listenCreateData(std::shared_ptr<dht::Value> value, const Hash &hash, const std::shared_ptr<char*> encryptionKey);
+        bool listenAddData(std::shared_ptr<dht::Value> value, const Hash &hash, const std::shared_ptr<char*> encryptionKey);
     private:
         dht::DhtRunner node;
-        std::vector<StagedCreateObject> stagedCreateObjects;
-        std::vector<StagedAddObject> stagedAddObjects;
+        std::vector<std::unique_ptr<StagedCreateObject>> stagedCreateObjects;
+        std::vector<std::unique_ptr<DataView>> stagedAddObjects;
         DatabaseStorage databaseStorage;
     };
 }
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