merge + conflict resolution

include/config/config.hpp

@@ -2,6 +2,9 @@
 
 #include "utils/config/config.hpp"
 
+#include <string>
+#include <set>
+
 namespace config
 {
 
@@ -15,6 +18,7 @@ class MemgraphConfig
 public:
     static const char *env_config_key;
     static const char *default_file_path;
+    static std::set<std::string> arguments;
 };
 
 // -- all possible Memgraph's keys --
@@ -31,6 +35,8 @@ inline size_t to_int(std::string &&s) { return stoull(s); }
 
 // code uses this define for key access
 // _KEY_ is value from all possible keys that are listed above
+#define CONFIG_REGISTER_ARGS(ARGC, ARGV) \
+  config::Config<config::MemgraphConfig>::instance().register_args(ARGC, ARGV);
 #define CONFIG(_KEY_) config::Config<config::MemgraphConfig>::instance()[_KEY_]
 
 #define CONFIG_INTEGER(_KEY_) config::to_int(CONFIG(_KEY_))

include/query/language/cypher/ast/tree.hpp

@@ -13,12 +13,9 @@ public:
     Ast() = default;
     Ast(const Ast&) = delete;
 
-    Ast(Ast&& other)
+    Ast(Ast&& other) : root(other.root), items(std::move(other.items))
     {
-        this->root = other.root;
         other.root = nullptr;
-
-        this->items = std::move(other.items);
     }
 
     Ast& operator=(Ast&& other)

include/query/language/cypher/debug/tree_print.hpp

@@ -24,7 +24,7 @@ public:
         class Entry
         {
         public:
-            Entry(Printer &printer) : printer(printer), valid(true)
+            explicit Entry(Printer &printer) : printer(printer), valid(true)
             {
                 printer.level++;
 
@@ -77,7 +77,8 @@ public:
         size_t level = 0;
     };
 
-    PrintVisitor(std::ostream &stream) : printer(stream, "Printing AST") {}
+    explicit PrintVisitor(std::ostream &stream)
+      : printer(stream, "Printing AST") {}
 
     void visit(ast::Start &start) override
     {

include/threading/pool.hpp

@@ -14,7 +14,7 @@ class Pool : Lockable<std::mutex>
 public:
     using sptr = std::shared_ptr<Pool>;
 
-    Pool(size_t n = std::thread::hardware_concurrency()) : alive(true)
+    explicit Pool(size_t n = std::thread::hardware_concurrency()) : alive(true)
     {
         threads.reserve(n);
 

include/utils/config/config.hpp

@@ -1,63 +1,82 @@
 #pragma once
 
-#include <cstring>
-#include <string>
-#include <stdexcept>
 #include <cstdlib>
+#include <cstring>
+#include <iostream>
+#include <stdexcept>
+#include <string>
+
+#include <pwd.h>
+#include <sys/types.h>
+#include <unistd.h>
 
 // TODO: isolate from caller (caller shouldn't know that his dependency is)
 // yaml-cpp
+#include "utils/command_line/arguments.hpp"
 #include "yaml-cpp/yaml.h"
 
-namespace config
-{
+namespace config {
   
 template <class Definition>
-class Config
-{
-private:
-    YAML::Node _config;
+class Config {
+ private:
+  using KeyValueMap = std::map<std::string, std::string>;
 
-    Config()
-    {
-        // config places:             priority
-        //     1. default system         |     (/etc/name/config)
-        //     2. default user           |     (/home/user/.name/config)
-        //     3. ENV var                |     (PATH)
-        //     4. program argument      \ /    (PATH)
+  KeyValueMap dict;
 
-        if (const char* env_path = std::getenv(Definition::env_config_key))
-        {
-            _config = YAML::LoadFile(env_path);
-            // TODO: error handling
-        } 
-        else
-        {
-            _config = YAML::LoadFile(Definition::default_file_path);
-            // TODO: error handling
-        }
+  void load_configuration(std::string path) {
+    try {
+      YAML::Node node = YAML::LoadFile(path);
     
-        // TODO:
-        //     * default system
-        //     * default user
-        //     * program argument
+      for (YAML::const_iterator it = node.begin(); it != node.end(); ++it) {
+        dict[it->first.as<std::string>()] = it->second.as<std::string>();
+      }
+    } catch (std::exception ex) {
+      // configuration doesn't exist or invalid!!!
+    }
+  }
+
+  Config() {
+    // config places:             priority
+    //     1. default system         |     (/etc/memgraph/config)
+    //     2. default user           |     (/home/user/.memgraph/config)
+    //     3. ENV var                |     (PATH)
+    //     4. program argument      \ /    (PATH)
+
+    // default system configuration
+    load_configuration(Definition::default_file_path);
+
+    // default user configuration
+    // fetches user configuration folder
+    std::string homedir = std::getenv("HOME"); 
+    if ((homedir == "")) {
+      homedir = getpwuid(getuid())->pw_dir;
+    }
+    homedir += "/.memgraph/config.yaml";
+    load_configuration(homedir);
+
+    // environment variable configuratoin
+    if (const char* env_path = std::getenv(Definition::env_config_key))
+      load_configuration(env_path);
+  }
+
+ public:
+  static Config<Definition>& instance() {
+    static Config<Definition> config;
+    return config;
+  }
+
+  void register_args(int argc, char** argv) {
+    REGISTER_ARGS(argc, argv);
+
+    for (const auto& argument : Definition::arguments) {
+      dict[argument] = GET_ARG("--" + argument, dict[argument]).get_string();
     }
 
-public:
-    static Config<Definition>& instance()
-    {
-        static Config<Definition> config;
-        return config;
-    }
+  }
 
-    void register_program_arguments()
-    {
-    }
-
-    std::string operator[](const char* key)
-    {
-        return _config[key].template as<std::string>();
-    }
+  std::string operator[](const char* key) {
+    return dict[key];
+  }
 };
-
 }

src/config/config.cpp

@@ -4,6 +4,15 @@ namespace config
 {
 
 const char *MemgraphConfig::env_config_key = "MEMGRAPH_CONFIG";
-const char *MemgraphConfig::default_file_path = "config.yaml";
+const char *MemgraphConfig::default_file_path = "/etc/memgraph/config.yaml";
+
+// configuration for arguments which can be passed threw command line
+// TODO add support for shortened names
+// Example:
+// --cleaning_cycle_sec or -ccs, etc.
+std::set<std::string> MemgraphConfig::arguments = {
+  "cleaning_cycle_sec",
+  "snapshot_cycle_sec",
+};
 
 }

src/dbms/dbms.cpp

@@ -20,9 +20,6 @@ Db &Dbms::active(const std::string &name)
     // create db if it doesn't exist
     auto it = acc.find(name);
     if (it == acc.end()) {
-
-        // It doesn't exist.
-        Snapshoter &snap = snapshoter;
         it = acc.emplace(name, std::forward_as_tuple(name),
                          std::forward_as_tuple(name))
                  .first;

src/memgraph_bolt.cpp

@@ -9,19 +9,26 @@
 #include "logging/default.hpp"
 #include "logging/streams/stdout.hpp"
 
+#include "utils/config/config.hpp"
 #include "utils/signals/handler.hpp"
-#include "utils/terminate_handler.hpp"
 #include "utils/stacktrace/log.hpp"
+#include "utils/terminate_handler.hpp"
 
 static bolt::Server<bolt::Worker> *serverptr;
 
 Logger logger;
 
-// TODO: load from configuration
+// TODO: load from config
 static constexpr const char *interface = "0.0.0.0";
 static constexpr const char *port      = "7687";
 
-int main(void)
+void throw_and_stacktace(std::string message)
+{
+    Stacktrace stacktrace;
+    logger.info(stacktrace.dump());
+}
+
+int main(int argc, char **argv)
 {
 // logging init
 #ifdef SYNC_LOGGER
@@ -31,14 +38,14 @@ int main(void)
 #endif
     logging::log->pipe(std::make_unique<Stdout>());
 
-    // logger init
+    // get logger
     logger = logging::log->logger("Main");
     logger.info("{}", logging::log->type());
 
-    // unhandled exception handler
+    // unhandled exception handler init
     std::set_terminate(&terminate_handler);
 
-    // signal handling
+    // signal handling init
     SignalHandler::register_handler(Signal::SegmentationFault, []() {
         log_stacktrace("SegmentationFault signal raised");
         std::exit(EXIT_FAILURE);
@@ -52,6 +59,9 @@ int main(void)
         std::exit(EXIT_FAILURE);
     });
 
+    // register args
+    CONFIG_REGISTER_ARGS(argc, argv);
+
     // initialize socket
     io::Socket socket;
     try

src/speedy/http/http_error.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SERVER_HTTP_HTTP_ERROR_HPP
-#define MEMGRAPH_SERVER_HTTP_HTTP_ERROR_HPP
+#pragma once
 
 #include <stdexcept>
 #include <string>
@@ -10,7 +9,7 @@ namespace http
 class HttpError : public std::runtime_error
 {
 public:
-    HttpError(const std::string& message)
+    explicit HttpError(const std::string& message)
         : std::runtime_error(message) {}
 };
 

src/speedy/http/httpserver.hpp

@@ -22,7 +22,7 @@ class HttpServer
 public:
     using request_cb_t = std::function<void(Req&, Res&)>;
 
-    HttpServer(uv::UvLoop& loop);
+    explicit HttpServer(uv::UvLoop& loop);
 
     void listen(const Ipv4& ip, request_cb_t callback);
 

src/speedy/http/httpserver.inl

@@ -9,8 +9,8 @@ namespace http
 static BlockAllocator<65536> buffer_allocator;
 
 template <class Req, class Res>
-HttpServer<Req, Res>::HttpServer(uv::UvLoop& loop)
-    : loop(loop), stream(loop) {}
+HttpServer<Req, Res>::HttpServer(uv::UvLoop& l)
+    : loop(l), stream(l) {}
 
 template <class Req, class Res>
 void HttpServer<Req, Res>::listen(const Ipv4& ip, request_cb_t callback)

src/speedy/http/response.hpp

@@ -21,7 +21,7 @@ class Response
     using response_t = Response<Req, Res>;
 
 public:
-    Response(connection_t& connection);
+    explicit Response(connection_t& connection);
     
     void send(const std::string& body);
     void send(Status code, const std::string& body);

src/speedy/http/response.inl

@@ -12,8 +12,8 @@ namespace http
 static BlockAllocator<sizeof(uv_write_t)> write_req_allocator;
 
 template <class Req, class Res>
-Response<Req, Res>::Response(connection_t& connection)
-    : status(Status::Ok), connection(connection), buffer() {}
+Response<Req, Res>::Response(connection_t& conn)
+    : status(Status::Ok), connection(conn), buffer() {}
 
 template <class Req, class Res>
 void Response<Req, Res>::send(Status status, const std::string& body)

src/speedy/r3.hpp

@@ -92,7 +92,7 @@ public:
         r3::route* route;
     };
 
-    R3(size_t capacity)
+    explicit R3(size_t capacity)
     {
         root = r3::r3_tree_create(capacity);
     }
@@ -104,10 +104,8 @@ public:
 
     R3(R3&) = delete;
 
-    R3(R3&& other)
+    R3(R3&& other) : routes(std::move(other.routes), root(other.root)
     {
-        this->routes = std::move(other.routes);
-        this->root = other.root;
         other.root = nullptr;
     }
 

src/test/lockfree_list.cpp

@@ -10,7 +10,7 @@ using namespace std;
 template <class T>
 class ListNode {
 public:
-    ListNode(T value) : value(value) {}
+    explicit ListNode(T value) : value(value) {}
 
     std::atomic<T> value;
     std::atomic<ListNode<T>*> prev;

src/utils/string/transform.cpp

@@ -3,6 +3,7 @@
 namespace utils
 {
 
+// TODO CPPCheck -> function never used
 void str_tolower(std::string& s)
 {
     //  en_US.utf8 localization