121 lines
3.8 KiB
C
121 lines
3.8 KiB
C
|
|
#include "negentropy_wrapper.h"
|
|
|
|
//This is a C-wrapper for the C++ library that helps in integrating negentropy with nim code.
|
|
//TODO: Do error handling by catching exceptions
|
|
|
|
void* storage_new(const char* db_path, const char* name){
|
|
negentropy::storage::BTreeLMDB* storage;
|
|
/*
|
|
auto env = lmdb::env::create();
|
|
env.set_max_dbs(64);
|
|
env.open(db_path, 0);
|
|
|
|
lmdb::dbi btreeDbi;
|
|
|
|
{
|
|
auto txn = lmdb::txn::begin(env);
|
|
btreeDbi = negentropy::storage::BTreeLMDB::setupDB(txn, name);
|
|
txn.commit();
|
|
} */
|
|
//TODO: Finish constructor
|
|
//storage = new negentropy::storage::BTreeLMDB();
|
|
return storage;
|
|
}
|
|
|
|
void* negentropy_new(void* storage, uint64_t frameSizeLimit){
|
|
//TODO: Make these typecasts into macros??
|
|
negentropy::storage::BTreeLMDB* lmdbStorage;
|
|
//TODO: reinterpret cast is risky, need to use more safe type conversion.
|
|
lmdbStorage = reinterpret_cast<negentropy::storage::BTreeLMDB*>(storage);
|
|
|
|
Negentropy<negentropy::storage::BTreeLMDB>* ne;
|
|
try{
|
|
ne = new Negentropy<negentropy::storage::BTreeLMDB>(*lmdbStorage, frameSizeLimit);
|
|
}catch(negentropy::err e){
|
|
//TODO:Find a way to return this error
|
|
return NULL;
|
|
}
|
|
return ne;
|
|
}
|
|
|
|
const char* negentropy_initiate(void* negentropy){
|
|
Negentropy<negentropy::storage::BTreeLMDB>* ngn_inst;
|
|
ngn_inst = reinterpret_cast<Negentropy<negentropy::storage::BTreeLMDB>*>(negentropy);
|
|
|
|
std::string* output = new std::string();
|
|
try {
|
|
*output = ngn_inst->initiate();
|
|
} catch(negentropy::err e){
|
|
//TODO:Find a way to return this error
|
|
return NULL;
|
|
}
|
|
return output->c_str();
|
|
}
|
|
|
|
void negentropy_setinitiator(void* negentropy){
|
|
Negentropy<negentropy::storage::BTreeLMDB> *ngn_inst;
|
|
ngn_inst = reinterpret_cast<Negentropy<negentropy::storage::BTreeLMDB>*>(negentropy);
|
|
|
|
ngn_inst->setInitiator();
|
|
|
|
}
|
|
|
|
|
|
bool storage_insert(void* storage, uint64_t createdAt, const char* id){
|
|
negentropy::storage::BTreeLMDB* lmdbStorage;
|
|
lmdbStorage = reinterpret_cast<negentropy::storage::BTreeLMDB*>(storage);
|
|
|
|
//TODO: Error handling. Is it required?
|
|
//How does out of memory get handled?
|
|
return lmdbStorage->insert(createdAt, id);
|
|
}
|
|
|
|
|
|
bool storage_erase(void* storage, uint64_t createdAt, const char* id){
|
|
negentropy::storage::BTreeLMDB* lmdbStorage;
|
|
lmdbStorage = reinterpret_cast<negentropy::storage::BTreeLMDB*>(storage);
|
|
|
|
//TODO: Error handling
|
|
return lmdbStorage->erase(createdAt, id);
|
|
}
|
|
|
|
|
|
const char* reconcile(void* negentropy, const char* query){
|
|
Negentropy<negentropy::storage::BTreeLMDB> *ngn_inst;
|
|
ngn_inst = reinterpret_cast<Negentropy<negentropy::storage::BTreeLMDB>*>(negentropy);
|
|
|
|
std::string* output = new std::string();
|
|
try {
|
|
*output = ngn_inst->reconcile(std::string_view(query));
|
|
} catch(negentropy::err e){
|
|
//TODO:Find a way to return this error
|
|
return NULL;
|
|
}
|
|
return output->c_str();
|
|
}
|
|
|
|
const char* reconcile_with_ids(void* negentropy, const char* query, const char* have_ids[],
|
|
uint64_t have_ids_len, const char* need_ids[], uint64_t need_ids_len){
|
|
Negentropy<negentropy::storage::BTreeLMDB> *ngn_inst;
|
|
ngn_inst = reinterpret_cast<Negentropy<negentropy::storage::BTreeLMDB>*>(negentropy);
|
|
|
|
std::optional<std::string>* output;
|
|
std::vector<std::string> haveIds(have_ids, have_ids+have_ids_len);
|
|
|
|
std::vector<std::string> needIds(need_ids, need_ids+need_ids_len);
|
|
|
|
try {
|
|
*output = ngn_inst->reconcile(std::string_view(query), haveIds, needIds);
|
|
} catch(negentropy::err e){
|
|
//TODO:Find a way to return this error
|
|
return NULL;
|
|
}
|
|
if (output->has_value()) {
|
|
//TODO: Figure out diff between error and this.
|
|
return NULL;
|
|
}else {
|
|
|
|
return output->value().c_str();
|
|
}
|
|
} |