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AQuery/server/server.cpp

694 lines
31 KiB

#include "pch_msc.hpp"
#define TESTMAIN
#include <iostream>
#include <string>
#include <chrono>
#include <thread>
#include "libaquery.h"
#include "monetdb_conn.h"
#include "duckdb_conn.h"
constexpr create_server_t get_server[] = {
CreateNULLServer,
[](Context* cxt) -> void*{ return new MonetdbServer(cxt); },
CreateNULLServer,
[](Context* cxt) -> void*{ return new DuckdbServer(cxt); },
CreateNULLServer,
};
#pragma region misc
#ifdef THREADING
#include "threading.h"
#endif
#ifdef _WIN32
#include "winhelper.h"
#else
#include <dlfcn.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <atomic>
struct SharedMemory
{
std::atomic<bool> a;
int hFileMap;
void* pData;
explicit SharedMemory(const char* fname) {
hFileMap = open(fname, O_RDWR, 0);
if (hFileMap != -1)
pData = mmap(nullptr, 8, PROT_READ | PROT_WRITE, MAP_SHARED, hFileMap, 0);
else
pData = nullptr;
}
void FreeMemoryMap() const {
// automatically unmapped in posix
}
};
#endif // _WIN32
#ifdef __AQUERY_ITC_USE_SEMPH__
A_Semaphore prompt{ true }, engine{ false };
#define PROMPT_ACQUIRE() prompt.acquire()
#define PROMPT_RELEASE() prompt.release()
#define ENGINE_ACQUIRE() engine.acquire()
#define ENGINE_RELEASE() engine.release()
#else
#define PROMPT_ACQUIRE()
#define PROMPT_RELEASE() std::this_thread::sleep_for(std::chrono::nanoseconds(0))
#define ENGINE_ACQUIRE()
#define ENGINE_RELEASE()
#endif
typedef void (*module_init_fn)(Context*);
int n_recv = 0;
char** n_recvd = nullptr;
__AQEXPORT__(void) wait_engine() {
PROMPT_ACQUIRE();
}
__AQEXPORT__(void) wake_engine() {
ENGINE_RELEASE();
}
extern "C" void __DLLEXPORT__ receive_args(int argc, char**argv){
n_recv = argc;
n_recvd = argv;
}
enum BinaryInfo_t {
MSVC, MSYS, GCC, CLANG, AppleClang
};
extern "C" int __DLLEXPORT__ binary_info() {
#if defined(_MSC_VER) && !defined (__llvm__)
return MSVC;
#elif defined(__CYGWIN__) || defined(__MINGW32__) || defined(__MINGW64__)
return MSYS;
#elif defined(__clang__)
return CLANG;
#elif defined(__GNUC__)
return GCC;
#endif
}
__AQEXPORT__(bool)
have_hge() {
#if defined(__MONETDB_CONN_H__)
return MonetdbServer::havehge();
#else
return false;
#endif
}
Context* _g_cxt;
__AQEXPORT__(StoredProcedure)
get_procedure_ex(const char* name) {
return get_procedure(_g_cxt, name);
}
void activate_callback_based_trigger(Context* context, const char* cmd)
{
const char* query_name = cmd + 2;
const char* action_name = query_name;
while (*action_name++);
if(auto q = get_procedure(context, query_name),
a = get_procedure(context, action_name);
q.name == nullptr || a.name == nullptr
)
printf("Warning: Invalid query or action name: %s %s",
query_name, action_name);
else {
auto query = AQ_DupObject(&q);
auto action = AQ_DupObject(&a);
context->ct_host->execute_trigger(query, action);
}
}
// This function contains heap allocations, free after use
template<class String_T>
char* to_lpstr(const String_T& str) {
auto ret = static_cast<char*>(malloc(str.size() + 1));
memcpy(ret, str.c_str(), str.size());
ret[str.size()] = '\0';
return ret;
}
char* copy_lpstr(const char* str) {
auto len = strlen(str);
auto ret = static_cast<char*>(malloc(len + 1));
memcpy(ret, str, len + 1);
return ret;
}
#ifndef __AQ_USE_THREADEDGC__
void aq_init_gc(void *handle, Context* cxt)
{
typedef void (*aq_gc_init_t) (Context*);
if (handle && cxt){
auto sym = dlsym(handle, "__AQ_Init_GC__");
if(sym){
((aq_gc_init_t)sym)(cxt);
}
}
}
#else //__AQ_USE_THREADEDGC__
#define aq_init_gc(h, c)
#endif //__AQ_USE_THREADEDGC__
void initialize_module(const char* module_name, void* module_handle, Context* cxt){
auto _init_module = reinterpret_cast<module_init_fn>(dlsym(module_handle, "init_session"));
if (_init_module) {
_init_module(cxt);
}
else {
printf("Warning: module %s have no session support.\n", module_name);
}
}
#pragma endregion
int threaded_main(int argc, char** argv, Context* cxt){
aq_timer timer;
Config *cfg = reinterpret_cast<Config *>(argv[0]);
std::unordered_map<std::string, void*> user_module_map;
std::string pwd = (char*)(std::filesystem::current_path().string().c_str());
char sep = std::filesystem::path::preferred_separator;
pwd += sep;
std::string procedure_root = (pwd + "procedures") + sep;
std::string procedure_name = "";
StoredProcedure current_procedure;
vector_type<char *> recorded_queries;
vector_type<void *> recorded_libraries;
bool procedure_recording = false,
procedure_replaying = false;
uint32_t procedure_module_cursor = 0;
try {
if (!std::filesystem::is_directory(procedure_root)) {
if (std::filesystem::exists(procedure_root))
std::filesystem::remove_all(procedure_root);
}
if (!std::filesystem::exists(procedure_root)) {
std::filesystem::create_directory(procedure_root);
}
}
catch (std::filesystem::filesystem_error& e) {
printf("Failed to create directory %s: %s\n", procedure_root.c_str(), e.what());
}
if (cxt->module_function_maps == nullptr)
cxt->module_function_maps = new std::unordered_map<std::string, void*>();
auto module_fn_map =
static_cast<std::unordered_map<std::string, void*>*>(cxt->module_function_maps);
auto buf_szs = cfg->buffer_sizes;
void** buffers = (void**) malloc (sizeof(void*) * cfg->n_buffers);
for (int i = 0; i < cfg->n_buffers; i++)
buffers[i] = static_cast<void *>(argv[i + 1]);
cxt->buffers = buffers;
cxt->cfg = cfg;
cxt->n_buffers = cfg->n_buffers;
cxt->sz_bufs = buf_szs;
const auto& update_backend = [&cxt, &cfg](){
auto backend_type = cfg->backend_type;
if (backend_type == Backend_Type::BACKEND_AQuery) {
backend_type = Backend_Type::BACKEND_MonetDB;
}
auto& curr_server = cxt->alt_server[backend_type];
if (curr_server == nullptr) {
curr_server = get_server[cfg->backend_type](cxt);
cxt->alt_server[cfg->backend_type] = curr_server;
static_cast<DataSource*>(curr_server)->exec("SELECT '**** WELCOME TO AQUERY++! ****';");
puts(*(const char**)(static_cast<DataSource*>(curr_server)->getCol(0, types::Types<const char*>::getType())));
}
cxt->curr_server = curr_server;
};
update_backend();
while(cfg->running){
ENGINE_ACQUIRE();
if (cfg->new_query) {
cfg->stats.postproc_time = 0;
cfg->stats.monet_time = 0;
start:
void *handle = nullptr;
void *user_module_handle = nullptr;
if (cfg->backend_type == BACKEND_MonetDB||
cfg->backend_type == BACKEND_DuckDB ||
cfg->backend_type == BACKEND_AQuery
) {
update_backend();
auto server = reinterpret_cast<DataSource*>(cxt->curr_server);
if(n_recv > 0){
if (cfg->backend_type == BACKEND_AQuery || cfg->has_dll) {
const char* proc_name = "./dll.so";
std::string dll_path;
if (procedure_recording) {
dll_path = procedure_root +
procedure_name + std::to_string(recorded_libraries.size) + ".so";
try{
if (std::filesystem::exists(dll_path))
std::filesystem::remove(dll_path);
std::filesystem::copy_file(proc_name, dll_path);
} catch(std::filesystem::filesystem_error& e){
puts(e.what());
dll_path = proc_name;
}
proc_name = dll_path.c_str();
//if(recorded_libraries.size)
recorded_queries.emplace_back(copy_lpstr("N"));
}
handle = dlopen(proc_name, RTLD_NOW);
aq_init_gc(handle, cxt);
if (procedure_recording) {
recorded_libraries.emplace_back(handle);
}
}
for (const auto& module : user_module_map){
initialize_module(module.first.c_str(), module.second, cxt);
}
cxt->init_session();
for(int i = 0; i < n_recv; ++i)
{
printf("%s, %d\n", n_recvd[i], n_recvd[i][0] == 'Q');
switch(n_recvd[i][0]){
case 'Q': // SQL query for monetdbe
{
if(procedure_recording){
recorded_queries.emplace_back(copy_lpstr(n_recvd[i]));
}
timer.reset();
server->exec(n_recvd[i] + 1);
cfg->stats.monet_time += timer.elapsed();
printf("Exec Q%d: %s", i, n_recvd[i]);
}
break;
case 'P': // Postprocessing procedure
if(handle && !server->haserror()) {
if (procedure_recording) {
recorded_queries.emplace_back(copy_lpstr(n_recvd[i]));
}
code_snippet c = reinterpret_cast<code_snippet>(dlsym(handle, n_recvd[i]+1));
printf("%p", dlsym(handle, n_recvd[i] + 1));
timer.reset();
c(cxt);
cfg->stats.postproc_time += timer.elapsed();
}
break;
case 'M': // Load Module
{
auto mname = n_recvd[i] + 1;
user_module_handle = dlopen(mname, RTLD_NOW);
//getlasterror
if (!user_module_handle)
#ifndef _WIN32
puts(dlerror());
#else
printf("Fatal Error: Module %s failed to load with error code %d.\n", mname, dlerror());
#endif
user_module_map[mname] = user_module_handle;
initialize_module(mname, user_module_handle, cxt);
}
break;
case 'F': // Register Function in Module
{
auto fname = n_recvd[i] + 1;
//printf("F:: %s: %p, %p\n", fname, user_module_handle, dlsym(user_module_handle, fname));
module_fn_map->insert_or_assign(fname, dlsym(user_module_handle, fname));
//printf("F::: %p\n", module_fn_map->find("mydiv") != module_fn_map->end() ? module_fn_map->find("mydiv")->second : nullptr);
}
break;
case 'O':
{
if(!server->haserror()){
if (procedure_recording){
char* buf = (char*) malloc (sizeof(char) * 6);
memcpy(buf, n_recvd[i], 5);
buf[5] = '\0';
recorded_queries.emplace_back(buf);
}
uint32_t limit;
memcpy(&limit, n_recvd[i] + 1, sizeof(uint32_t));
if (limit == 0)
continue;
timer.reset();
print_monetdb_results(server, " ", "\n", limit);
cfg->stats.postproc_time += timer.elapsed();
}
}
break;
case 'U': // Unload Module
{
auto mname = n_recvd[i] + 1;
auto it = user_module_map.find(mname);
if (user_module_handle == it->second)
user_module_handle = nullptr;
dlclose(it->second);
user_module_map.erase(it);
}
break;
case 'N':
{
if(procedure_module_cursor < current_procedure.postproc_modules)
handle = current_procedure.__rt_loaded_modules[procedure_module_cursor++];
printf("Load %i = %p\n", procedure_module_cursor, handle);
}
break;
case 'R': //recorded procedure
{
auto proc_name = n_recvd[i] + 2;
proc_name = *proc_name?proc_name : proc_name + 1;
puts(proc_name);
const auto& load_modules = [&](StoredProcedure &p) {
if (!p.__rt_loaded_modules){
p.__rt_loaded_modules = static_cast<void**>(
malloc(sizeof(void*) * p.postproc_modules));
for(uint32_t j = 0; j < p.postproc_modules; ++j){
auto pj = dlopen((procedure_root + p.name + std::to_string(j) + ".so").c_str(), RTLD_NOW);
if (pj == nullptr){
printf("Error: failed to load module %s\n", p.name);
return true;
}
aq_init_gc(pj, cxt);
p.__rt_loaded_modules[j] = pj;
}
}
return false;
};
const auto& save_proc_tofile = [&](const StoredProcedure& p) {
auto config_name = procedure_root + procedure_name + ".aqp";
auto fp = fopen(config_name.c_str(), "wb");
if (fp == nullptr){
printf("Error: failed to open file %s\n", config_name.c_str());
return true;
}
fwrite(&p.cnt, sizeof(p.cnt), 1, fp);
fwrite(&p.postproc_modules, sizeof(p.postproc_modules), 1, fp);
for(uint32_t j = 0; j < p.cnt; ++j){
auto current_query = p.queries[j];
auto len_query = strlen(current_query);
fwrite(current_query, len_query + 1, 1, fp);
}
fclose(fp);
return false;
};
const auto& load_proc_fromfile = [&](StoredProcedure& p) {
auto config_name = procedure_root + p.name + ".aqp";
puts(p.name);
auto fp = fopen(config_name.c_str(), "rb");
if(fp == nullptr){
puts("ERROR: Procedure not found on disk.");
return true;
}
fread(&p.cnt, sizeof(p.cnt), 1, fp);
fread(&p.postproc_modules, sizeof(p.postproc_modules), 1, fp);
auto offset_now = ftell(fp);
fseek(fp, 0, SEEK_END);
auto queries_size = ftell(fp) - offset_now;
fseek(fp, offset_now, SEEK_SET);
p.queries = static_cast<char**>(malloc(sizeof(char*) * p.cnt));
p.queries[0] = static_cast<char*>(malloc(sizeof(char) * queries_size));
fread(p.queries[0], 1, queries_size, fp);
for(uint32_t j = 1; j < p.cnt; ++j){
p.queries[j] = p.queries[j-1];
while(*(p.queries[j]) != '\0')
++p.queries[j];
++p.queries[j];
puts(p.queries[j-1]);
}
fclose(fp);
p.__rt_loaded_modules = nullptr;
return load_modules(p);
};
switch(n_recvd[i][1]){
case '\0':
current_procedure.name = copy_lpstr(proc_name);
AQ_ZeroMemory(current_procedure);
procedure_recording = true;
procedure_name = proc_name;
break;
case 'T':
current_procedure.queries = recorded_queries.container;
current_procedure.cnt = recorded_queries.size;
current_procedure.name = copy_lpstr(proc_name);
current_procedure.postproc_modules = recorded_libraries.size;
current_procedure.__rt_loaded_modules = recorded_libraries.container;
AQ_ZeroMemory(recorded_queries);
AQ_ZeroMemory(recorded_libraries);
procedure_recording = false;
save_proc_tofile(current_procedure);
cxt->stored_proc.insert_or_assign(procedure_name, current_procedure);
procedure_name = "";
break;
case 'E': // execute procedure
{
procedure_module_cursor = 0;
auto _proc = cxt->stored_proc.find(proc_name);
if (_proc == cxt->stored_proc.end()){
printf("Procedure %s not found. Trying load from disk.\n", proc_name);
current_procedure.name = copy_lpstr(proc_name);
if (!load_proc_fromfile(current_procedure)){
cxt->stored_proc.insert_or_assign(proc_name, current_procedure);
}
else {
continue;
}
}
else{
current_procedure = _proc->second;
}
n_recv = current_procedure.cnt;
n_recvd = current_procedure.queries;
load_modules(current_procedure);
procedure_replaying = true;
goto start; // yes, I know, refactor later!!
}
break;
case 'D': // delete procedure
break;
case 'S': // save procedure
break;
case 'L': // load procedure
current_procedure.name = copy_lpstr(proc_name);
if (!load_proc_fromfile(current_procedure)) {
cxt->stored_proc.insert_or_assign(proc_name, current_procedure);
}
break;
case 'd': // display all procedures
for(const auto& p : cxt->stored_proc){
printf("Procedure: %s, %d queries, %d modules:\n", p.first.c_str(),
p.second.cnt, p.second.postproc_modules);
for(uint32_t j = 0; j < p.second.cnt; ++j){
printf("\tQuery %d: %s\n", j, p.second.queries[j]);
}
puts("");
}
break;
}
}
break;
case 'T': // triggers
{
puts(n_recvd[i]);
switch(n_recvd[i][1]){
case 'I': // register interval based trigger
{
const char* action_name = n_recvd[i] + 2;
while(*action_name++);
if(auto p = get_procedure(cxt, action_name); p.name == nullptr)
printf("Invalid action name: %s\n", action_name);
else {
auto action = AQ_DupObject(&p);
const char* interval = action_name;
while(*interval++);
const auto i_interval = getInt<uint32_t>(interval);
cxt->it_host->add_trigger(n_recvd[i] + 2, action, i_interval);
}
}
break;
case 'C' : //register callback based trigger
{
const char* trigger_name = n_recvd[i] + 2;
const char* table_name = trigger_name;
while(*table_name++);
const char* query_name = table_name;
while(*query_name++);
const char* action_name = query_name;
while(*action_name++);
cxt->ct_host->add_trigger(trigger_name, table_name, query_name, action_name);
}
break;
case 'A': // activate callback based trigger
activate_callback_based_trigger(cxt, n_recvd[i]);
break;
case 'N':
cxt->ct_host->execute_trigger(n_recvd[i] + 2);
break;
case 'R': // remove trigger
{
cxt->it_host->remove_trigger(n_recvd[i] + 2);
}
break;
default:
printf("Corrupted message from prompt: %s\n", n_recvd[i]);
break;
}
}
break;
case 'C': //Caching
{
char* cached_table = n_recvd[i] + 1;
char *lazy = (cached_table + 1);
cached_table = AQ_DupString(cached_table);
while(*lazy++);
// get schema
int* n_cols = reinterpret_cast<int *>(lazy + 2);
char* col_schema = reinterpret_cast<char *>(n_cols + 1);
TableInfo<void> *tbl = new TableInfo<void>;
tbl->name = cached_table;//AQ_DupString(cached_table);
tbl->n_cols = *n_cols;
for (int i = 0; i < *n_cols; ++i) {
char* col_name = col_schema;
char* mem_coltype = col_name + 1;
while(*mem_coltype++);
int coltype = *(reinterpret_cast<int*>(mem_coltype));
//
tbl->colrefs[i].name = AQ_DupString(col_name);
tbl->colrefs[i].ty = static_cast<types::Type_t>(coltype);
}
server->getDSTable(cached_table, tbl);
// server->exec( (
// std::string("SELECT * FROM ") + cached_table + std::string(";")
// ).c_str() );
// server->getCol()
// free(cached_table);
break;
}
}
}
printf("%lld, %lld", cfg->stats.monet_time, cfg->stats.postproc_time);
cxt->end_session();
n_recv = 0;
}
if (server->last_error != nullptr) {
printf("Monetdbe Error: %s\n", server->last_error);
server->last_error = nullptr;
//goto finalize;
}
}
// puts(cfg->has_dll ? "true" : "false");
// if (cfg->backend_type == BACKEND_AQuery) {
// handle = dlopen("./dll.so", RTLD_NOW);
// code_snippet c = reinterpret_cast<code_snippet>(dlsym(handle, "dllmain"));
// c(cxt);
// }
if (handle &&
!procedure_replaying && !procedure_recording) {
printf("Destroy %p\n", handle);
dlclose(handle);
handle = nullptr;
}
procedure_replaying = false;
cfg->new_query = 0;
}
//puts(cfg->running? "true": "false");
//finalize:
PROMPT_RELEASE();
}
return 0;
}
#ifdef __AQ_BUILD_LAUNCHER__
int main(int argc, char** argv){
#ifdef _WIN32
constexpr char sep = '\\';
#else
constexpr char sep = '/';
#endif
std::string str = " ";
std::string pwd = "";
if (argc > 0)
pwd = argv[0];
auto pos = pwd.find_last_of(sep);
if (pos == std::string::npos)
pos = 0;
pwd = pwd.substr(0, pos);
for (int i = 1; i < argc; i++){
str += argv[i];
str += " ";
}
str = std::string("cd ") + pwd + std::string("&& python3 ./prompt.py ") + str;
return system(str.c_str());
}
#endif
extern "C" int __DLLEXPORT__ dllmain(int argc, char** argv) {
// puts("running");
Context* cxt = new Context();
_g_cxt = cxt;
cxt->aquery_root_path = to_lpstr(std::filesystem::current_path().string());
// cxt->log("%d %s\n", argc, argv[1]);
#ifdef THREADING
auto tp = new ThreadPool();
cxt->thread_pool = tp;
cxt->it_host = new IntervalBasedTriggerHost(tp, cxt);
cxt->ct_host = new CallbackBasedTriggerHost(tp, cxt);
#endif
const char* shmname;
if (argc < 0)
return threaded_main(argc, argv, cxt);
else
shmname = argv[1];
SharedMemory shm = SharedMemory(shmname);
if (!shm.pData)
return 1;
bool &running = static_cast<bool*>(shm.pData)[0],
&ready = static_cast<bool*>(shm.pData)[1];
using namespace std::chrono_literals;
cxt->log("running: %s\n", running? "true":"false");
cxt->log("ready: %s\n", ready? "true":"false");
while (running) {
std::this_thread::sleep_for(1ms);
if(ready) {
cxt->log("running: %s\n", running? "true":"false");
cxt->log("ready: %s\n", ready? "true":"false");
void* handle = dlopen("./dll.so", RTLD_NOW);
cxt->log("handle: %p\n", handle);
if (handle) {
cxt->log("inner\n");
code_snippet c = reinterpret_cast<code_snippet>(dlsym(handle, "dllmain"));
cxt->log("routine: %p\n", c);
if (c) {
cxt->log("inner\n");
cxt->err("return: %d\n", c(cxt));
}
}
ready = false;
}
}
shm.FreeMemoryMap();
return 0;
}