Moved main to test

Moved esc.h to include
Added append_to_stream on connection

CMakeLists.txt

@@ -10,7 +10,7 @@ if(WIN32)
     link_directories(c:/Users/nicol/dev/thirdparty/protobuf-c/protobuf-c/.libs)
 endif()
 
-add_executable(esc src/main.c src/utils/mutex.c src/utils/mutex.h src/utils/thread.c src/utils/thread.h src/utils/socket.c src/utils/socket.h src/esc.c src/esc.h src/proto.c src/proto.h src/utils/uuid.c src/utils/uuid.h src/utils/buffer.c src/utils/buffer.h src/tcp_package.c src/tcp_package.h src/utils/string.c src/utils/string.h src/utils/queue.c src/utils/queue.h src/tcp_messages.c src/tcp_messages.h src/utils/debug.h src/utils/debug.c)
+add_executable(esc test/main.c src/utils/mutex.c src/utils/mutex.h src/utils/thread.c src/utils/thread.h src/utils/socket.c src/utils/socket.h include/esc.h src/proto.c src/proto.h src/utils/uuid.c src/utils/uuid.h src/utils/buffer.c src/utils/buffer.h src/tcp_package.c src/tcp_package.h src/utils/string.c src/utils/string.h src/utils/queue.c src/utils/queue.h src/tcp_messages.c src/tcp_messages.h src/utils/debug.h src/utils/debug.c src/position.c src/position.h src/credentials.c src/credentials.h src/connection.c src/connection.h src/utils/bool.h src/endpoint_discoverer.h src/utils/error.c src/utils/error.h src/endpoint_discoverer.c src/proto_helper.h src/proto_helper.c src/results.h src/results.c src/event_data.c src/event_data.h src/utils/array.c src/utils/array.h src/utils/event.c src/utils/event.h)
 
 if(WIN32)
     target_link_libraries(esc wsock32 ws2_32 libprotobuf-c.a)

include/esc.h

@@ -0,0 +1,112 @@
+//
+// Created by nicol on 2018-03-18.
+//
+
+#ifndef ESC_ESC_H
+#define ESC_ESC_H
+
+#include <stdint.h>
+
+// bool
+typedef int bool_t;
+#define BOOL_TRUE 1
+#define BOOL_FALSE 0
+
+// array
+typedef struct st_array array_t;
+typedef void (*array_deallocator)(void*);
+array_t* array_create(size_t n, ...);
+void array_destroy(array_t* array, array_deallocator destroyer);
+
+// uuid
+typedef struct st_uuid uuid_t;
+uuid_t* uuid_create();
+void uuid_destroy(uuid_t*);
+
+// buffer
+typedef struct st_buffer buffer_t;
+void buffer_destroy(buffer_t*);
+buffer_t* buffer_from_string(const char* str);
+size_t buffer_size(buffer_t* b);
+
+// error
+#define ERROR_MSG_SIZE 1024
+typedef struct st_error {
+    const char* file;
+    int line;
+    int code;
+    char message[ERROR_MSG_SIZE];
+} error_t;
+
+// esc
+#define ESC_VERSION_NOSTREAM    -1
+#define ESC_VERSION_EMPTYSTREAM -1
+#define ESC_VERSION_ANY         -2
+
+typedef struct st_esc_position esc_position_t;
+typedef struct st_esc_connection_settings esc_connection_settings_t;
+typedef struct st_connection esc_connection_t;
+typedef struct st_credentials esc_credentials_t;
+
+struct st_recorded_event {
+    uuid_t* event_id;
+    const char* event_type;
+    int64_t event_number;
+    const char *event_stream_id;
+    int64_t created_epoch;
+    buffer_t* data;
+    buffer_t* metadata;
+};
+typedef struct st_recorded_event esc_recorded_event_t;
+
+struct st_resolved_event {
+    esc_recorded_event_t* event;
+    esc_recorded_event_t* link;
+    esc_position_t* original_position;
+};
+typedef struct st_resolved_event esc_resolved_event_t;
+
+struct st_all_events_slice {
+    char* read_direction;
+    esc_position_t* from_position;
+    esc_position_t* next_position;
+    size_t n_events;
+    esc_resolved_event_t** events;
+    int is_end_of_stream;
+};
+typedef struct st_all_events_slice esc_all_events_slice_t;
+
+typedef struct st_esc_write_result {
+    int64_t next_expected_version;
+    esc_position_t* log_position;
+} esc_write_result_t;
+
+typedef struct st_esc_event_data esc_event_data_t;
+
+esc_connection_settings_t* const esc_default_connection_settings;
+
+// Connection
+esc_connection_t* esc_connection_create(esc_connection_settings_t* connection_settings, const char* addr, const char* connection_name);
+void esc_connection_destroy(esc_connection_t* conn);
+
+int esc_connection_connect(esc_connection_t* conn);
+void esc_connection_close(esc_connection_t* conn);
+
+esc_credentials_t* esc_credentials_create(const char* username, const char* password);
+void esc_credentials_destroy(esc_credentials_t* creds);
+
+esc_event_data_t* esc_event_data_create(uuid_t* event_id, const char* event_type, bool_t is_json, buffer_t* data, buffer_t* metadata);
+void esc_event_data_destroy(esc_event_data_t*);
+esc_write_result_t* esc_append_to_stream(esc_connection_t* conn, const char* stream, int64_t expected_version, array_t* events);
+void esc_write_result_destroy(esc_write_result_t* write_result);
+
+esc_all_events_slice_t* esc_connection_read_all_forward(esc_connection_t* conn, esc_position_t* last_checkpoint, unsigned int count, esc_credentials_t* credentials);
+void esc_all_events_slice_destroy(esc_all_events_slice_t* all_events_slice);
+
+error_t* esc_connection_last_error(esc_connection_t* conn);
+
+// Formatting
+const char* uuid_format(uuid_t* uuid, char* buf, size_t buf_size);
+const char* esc_position_format(esc_position_t* position, char* buffer, size_t buf_size);
+
+#endif //ESC_ESC_H

src/connection.c

@@ -0,0 +1,322 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "connection.h"
+#include "tcp_package.h"
+#include "tcp_messages.h"
+#include "credentials.h"
+#include "proto_helper.h"
+#include "utils/array.h"
+#include "utils/debug.h"
+#include "utils/error.h"
+#include "utils/string.h"
+#include "utils/socket.h"
+
+// usleep
+#ifdef _WIN32
+#include <windows.h>
+#define usleep Sleep
+#endif
+#ifdef __linux__
+#include <unistd.h>
+#endif
+
+struct st_esc_connection_settings default_connection_settings = {
+    BOOL_FALSE
+};
+
+esc_connection_settings_t* esc_default_connection_settings = &default_connection_settings;
+
+//TODO partial transfer
+ssize_t connection_send_tcp_package(esc_connection_t* conn, tcp_package_t* pkg) {
+    char uuid_buf[37];
+#ifdef _WIN32
+    fprintf(stderr, "connection_send_tcp_package: %s %u %s %llu ", get_string_for_tcp_message(pkg->command), pkg->flags, esc_uuid_format(pkg->correlation_id, uuid_buf, 37), buffer_size(pkg->data));
+#else
+    fprintf(stderr, "connection_send_tcp_package: %s %u %s %lu ", get_string_for_tcp_message(pkg->command), pkg->flags,
+            uuid_format(pkg->correlation_id, uuid_buf, 37), buffer_size(pkg->data));
+#endif
+    buffer_t* send_buffer = tcp_package_to_buffer(pkg);
+
+    size_t send_buffer_size = buffer_size(send_buffer);
+    uint32_t size = (uint32_t)send_buffer_size;
+    ssize_t rc;
+    if ((rc = socket_send(conn->tcp_conn, (char *) &size, sizeof(uint32_t))) <= 0) {
+        buffer_destroy(send_buffer);
+        fprintf(stderr, "%d\n", socket_error(conn->tcp_conn));
+        return -1;
+    }
+
+    uint8_t* send_buffer_data = buffer_data(send_buffer);
+    if ((rc = socket_send(conn->tcp_conn, (char *) send_buffer_data, send_buffer_size)) <= 0) {
+        buffer_destroy(send_buffer);
+        fprintf(stderr, "%d\n", socket_error(conn->tcp_conn));
+        return -2;
+    }
+
+    buffer_destroy(send_buffer);
+    fprintf(stderr, "0\n");
+    return 0;
+}
+
+//TODO partial transfer
+tcp_package_t* connection_recv_tcp_package(esc_connection_t* conn) {
+    uint32_t recv_size;
+    ssize_t rc;
+    if ((rc = socket_recv(conn->tcp_conn, (char *)&recv_size, sizeof(uint32_t))) != 4) {
+#ifdef _WIN32
+        fprintf(stderr, "connection_recv_tcp_package: %lld %d\n", rc, socket_error(conn->tcp_conn));
+#else
+        fprintf(stderr, "connection_recv_tcp_package: %ld %d\n", rc, socket_error(conn->tcp_conn));
+#endif
+        return 0;
+    }
+    buffer_t* recv_buffer = buffer_create(recv_size);
+    size_t recv_buffer_size = recv_size;
+    uint8_t* recv_buffer_data = buffer_data(recv_buffer);
+    while(recv_size > 0) {
+        size_t pos = recv_buffer_size - recv_size;
+        rc = socket_recv(conn->tcp_conn, (char *)&recv_buffer_data[pos], recv_size);
+        recv_size -= rc;
+    }
+    tcp_package_t* recv_pkg = tcp_package_from_buffer(recv_buffer);
+    buffer_destroy(recv_buffer);
+    char uuid_buf[37];
+#ifdef _WIN32
+    fprintf(stderr, "connection_recv_tcp_package: %s %u %s %llu\n", get_string_for_tcp_message(recv_pkg->command), recv_pkg->flags, esc_uuid_format(recv_pkg->correlation_id, uuid_buf, 37), buffer_size(recv_pkg->data));
+#else
+    fprintf(stderr, "connection_recv_tcp_package: %s %u %s %lu\n", get_string_for_tcp_message(recv_pkg->command), recv_pkg->flags,
+            uuid_format(recv_pkg->correlation_id, uuid_buf, 37), buffer_size(recv_pkg->data));
+#endif
+    return recv_pkg;
+}
+
+void* connection_thread(void* arg) {
+    esc_connection_t* conn = arg;
+
+    while(conn->stop == BOOL_FALSE) {
+        if (socket_writable(conn->tcp_conn)) {
+            tcp_package_t* send_pkg = queue_dequeue(conn->send_queue);
+            if (send_pkg != 0) {
+                ssize_t rc = connection_send_tcp_package(conn, send_pkg);
+                tcp_package_destroy(send_pkg);
+                if (rc != 0) {
+                    fprintf(stderr, "failed to send pkg.");
+                }
+            }
+        }
+
+        if (socket_readable(conn->tcp_conn)) {
+            tcp_package_t* recv_pkg = connection_recv_tcp_package(conn);
+            if (recv_pkg == 0) {
+                //TODO Handle connection lost
+                conn->stop = 1;
+            } else if (recv_pkg->command == MESSAGE_HEARTBEATREQUEST) {
+                tcp_package_t* heartbeat_pkg = tcp_package_create(MESSAGE_HEARTBEATRESPONSE, recv_pkg->correlation_id, buffer_create(0));
+                queue_enqueue(conn->send_queue, heartbeat_pkg);
+                tcp_package_destroy(recv_pkg);
+            } else {
+                queue_enqueue(conn->recv_queue, recv_pkg);
+            }
+        }
+
+        usleep(1);
+    }
+
+    printf("manager thread stopped\n");
+    event_set(conn->stopped_event);
+}
+
+bool_t find_tcp_package_by_correlation_id(void* _item, void* _correlation_id) {
+    tcp_package_t* item = _item;
+    uuid_t* correlation_id = _correlation_id;
+    if (uuid_compare(item->correlation_id, correlation_id) == 0) {
+        return BOOL_TRUE;
+    }
+    return BOOL_FALSE;
+}
+
+//TODO add timeout
+tcp_package_t* connection_wait_for(esc_connection_t* conn, uuid_t* correlation_id) {
+    tcp_package_t* found = 0;
+    while(found == 0) {
+        found = queue_remove(conn->recv_queue, find_tcp_package_by_correlation_id, correlation_id);
+        usleep(1);
+    }
+    return found;
+}
+
+esc_connection_t* esc_connection_create(esc_connection_settings_t* connection_settings, const char* addr, const char* connection_name) {
+    struct st_connection* conn = malloc(sizeof(struct st_connection));
+    conn->settings = connection_settings;
+    if (connection_name == 0 || strcmp(connection_name, "") == 0) {
+        uuid_t* uuid = uuid_create();
+        char buf[40];
+        uuid_format(uuid, buf, 40);
+        conn->name = string_copy(buf);
+        uuid_destroy(uuid);
+    } else {
+        conn->name = connection_name;
+    }
+    conn->send_queue = queue_create();
+    conn->recv_queue = queue_create();
+    conn->stop = 0;
+    conn->stopped_event = event_create();
+    conn->last_error = 0;
+
+    if (strncmp(addr, "tcp://", 6) != 0) {
+        conn->last_error = error_create(1, "invalid schema for address: %s", addr);
+        return conn;
+    }
+    char* pos = strrchr(addr, ':');
+    if (pos == 0) {
+        conn->last_error = error_create(2, "missing port in address: %s", addr);
+        return conn;
+    }
+    char* host = malloc(pos - addr - 5);
+    strncpy(host, addr+6, pos-addr-6);
+    host[pos-addr-6] = 0;
+    unsigned short port = (unsigned short)atoi(pos+1);
+    esc_static_endpoint_discoverer_t discover_data = {
+            {host, port}, connection_settings->use_ssl_connection
+    };
+
+    conn->discoverer_data = malloc(sizeof(struct st_esc_static_endpoint_discoverer));
+    memcpy(conn->discoverer_data, &discover_data, sizeof(struct st_esc_static_endpoint_discoverer));
+    conn->discover = (esc_endpoint_discoverer_t)esc_static_discover;
+
+    return conn;
+}
+
+void esc_connection_destroy(esc_connection_t* conn) {
+    esc_connection_close(conn);
+
+    socket_destroy(conn->tcp_conn);
+    free(((struct st_esc_static_endpoint_discoverer*)conn->discoverer_data)->tcp_endpoint.host);
+    free(conn->discoverer_data);
+    thread_destroy(conn->manager_thread);
+    queue_destroy(conn->recv_queue);
+    queue_destroy(conn->send_queue);
+    event_destroy(conn->stopped_event);
+    free((void*)conn->name);
+    free(conn);
+}
+
+// return 0 on success
+// return non-zero on failure and sets last_error on connection
+int esc_connection_connect(esc_connection_t* conn) {
+    // Discover endpoint
+    esc_node_endpoints_t* endpoints = conn->discover(conn->discoverer_data, 0);
+    if (endpoints == 0) {
+        return -1;
+    }
+    // Establish Tcp Connection
+    conn->tcp_conn = socket_create(SOCKET_TYPE_TCP);
+    ip_endpoint_t endpoint = conn->settings->use_ssl_connection ? endpoints->secure_tcp_endpoint : endpoints->tcp_endpoint;
+    if (socket_connect(conn->tcp_conn, endpoint.host, endpoint.port) != 0) {
+        conn->last_error = error_create(socket_error(conn->tcp_conn), "can't connect to %s:%d", endpoint.host, endpoint.port);
+        return -1;
+    }
+    free(endpoints);
+    // Start manager thread
+    conn->manager_thread = thread_create(connection_thread, conn);
+    if (thread_start(conn->manager_thread)) {
+        conn->last_error = error_create(thread_error(conn->manager_thread), "can't start manager thread.", "");
+        return -1;
+    }
+    // Identify
+    uuid_t* correlation_id = uuid_create();
+
+    buffer_t* msg_buf = esc_identify_client_pack(conn->name);
+    tcp_package_t* send_pkg = tcp_package_create(MESSAGE_IDENTIFYCLIENT, correlation_id, msg_buf);
+    queue_enqueue(conn->send_queue, send_pkg);
+
+    tcp_package_t* recv_pkg = connection_wait_for(conn, correlation_id);
+    if (recv_pkg->command != MESSAGE_CLIENTIDENTIFIED) {
+        conn->last_error = error_create(0, "server error: %d.", recv_pkg->command);
+        uuid_destroy(correlation_id);
+        tcp_package_destroy(recv_pkg);
+        return -1;
+    }
+
+    uuid_destroy(correlation_id);
+    tcp_package_destroy(recv_pkg);
+    return 0;
+}
+
+esc_all_events_slice_t* esc_connection_read_all_forward(esc_connection_t* conn, esc_position_t* last_checkpoint, unsigned int count, esc_credentials_t* credentials) {
+    uuid_t* correlation_id = uuid_create();
+
+    buffer_t* msg_buf = esc_read_all_forward_pack(last_checkpoint, count, 0);
+    tcp_package_t* send_pkg = tcp_package_create_authenticated(MESSAGE_READALLEVENTSFORWARD, correlation_id, msg_buf, credentials->username, credentials->password);
+    queue_enqueue(conn->send_queue, send_pkg);
+
+    tcp_package_t* recv_pkg = connection_wait_for(conn, correlation_id);
+    if (recv_pkg->command != MESSAGE_READALLEVENTSFORWARDCOMPLETED) {
+        conn->last_error = error_create(recv_pkg->command, "wrong message from the server: %s", get_string_for_tcp_message(recv_pkg->command));
+        tcp_package_destroy(recv_pkg);
+        uuid_destroy(correlation_id);
+        return 0;
+    }
+
+    esc_all_events_slice_t* result;
+    inspection_result_t* inspection_result = esc_all_events_slice_unpack(recv_pkg->data, &result);
+    // TODO fully handle inspection results
+    if (inspection_result->error) {
+        conn->last_error = error_copy(inspection_result->error);
+        inspection_result_destroy(inspection_result);
+        tcp_package_destroy(recv_pkg);
+        uuid_destroy(correlation_id);
+        return 0;
+    }
+    inspection_result_destroy(inspection_result);
+    tcp_package_destroy(recv_pkg);
+    uuid_destroy(correlation_id);
+    return result;
+}
+
+esc_write_result_t* esc_append_to_stream(esc_connection_t* conn, const char* stream, int64_t expected_version, array_t* events) {
+    uuid_t* correlation_id = uuid_create();
+
+    buffer_t* msg_buf = esc_append_to_stream_pack(stream, expected_version, events);
+    tcp_package_t* send_pkg = tcp_package_create(MESSAGE_WRITEEVENTS, correlation_id, msg_buf);
+    queue_enqueue(conn->send_queue, send_pkg);
+
+    tcp_package_t* recv_pkg = connection_wait_for(conn, correlation_id);
+    if (recv_pkg->command != MESSAGE_WRITEEVENTSCOMPLETED) {
+        conn->last_error = error_create(recv_pkg->command, "server error: %s", get_string_for_tcp_message(recv_pkg->command));
+        tcp_package_destroy(recv_pkg);
+        uuid_destroy(correlation_id);
+        return 0;
+    }
+
+    esc_write_result_t* result;
+    inspection_result_t* inspection_result = esc_write_result_unpack(recv_pkg->data, &result);
+    // TODO fully handle inspection results
+    if (inspection_result->error) {
+        conn->last_error = error_copy(inspection_result->error);
+        inspection_result_destroy(inspection_result);
+        tcp_package_destroy(recv_pkg);
+        uuid_destroy(correlation_id);
+        return 0;
+    }
+    inspection_result_destroy(inspection_result);
+    tcp_package_destroy(recv_pkg);
+    uuid_destroy(correlation_id);
+    return result;
+}
+
+void esc_connection_close(esc_connection_t* conn) {
+    if (conn->stop == 1) return;
+    conn->stop = 1;
+    event_wait(conn->stopped_event);
+    socket_close(conn->tcp_conn);
+}
+
+inline error_t* esc_connection_last_error(esc_connection_t* conn) {
+    return conn->last_error;
+}

src/connection.h

@@ -0,0 +1,41 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#ifndef ESC_ESC_CONNECTION_H
+#define ESC_ESC_CONNECTION_H
+
+#include <protobuf-c/protobuf-c.h>
+#include "utils/bool.h"
+#include "utils/socket.h"
+#include "utils/thread.h"
+#include "utils/mutex.h"
+#include "utils/queue.h"
+#include "utils/error.h"
+#include "endpoint_discoverer.h"
+#include "utils/event.h"
+
+typedef struct st_esc_connection_settings {
+    bool_t use_ssl_connection;
+} esc_connection_settings_t;
+
+esc_connection_settings_t* esc_default_connection_settings;
+
+typedef struct st_connection {
+    esc_connection_settings_t* settings;
+    const char* name;
+    void* discoverer_data;
+    esc_endpoint_discoverer_t discover;
+    socket_t* tcp_conn;
+    thread_t* manager_thread;
+    bool_t stop;
+    queue_t* send_queue;
+    queue_t* recv_queue;
+    error_t* last_error;
+    event_t* stopped_event;
+} esc_connection_t;
+
+error_t* esc_connection_last_error(esc_connection_t* conn);
+void esc_connection_close(esc_connection_t* conn);
+
+#endif //ESC_ESC_CONNECTION_H

src/credentials.c

@@ -0,0 +1,21 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#include <stdlib.h>
+#include "utils/debug.h"
+#include "utils/string.h"
+#include "credentials.h"
+
+esc_credentials_t* esc_credentials_create(const char* username, const char* password) {
+    esc_credentials_t* creds = malloc(sizeof(struct st_credentials));
+    creds->username = string_copy(username);
+    creds->password = string_copy(password);
+    return creds;
+}
+
+void esc_credentials_destroy(esc_credentials_t* creds) {
+    free((void*)creds->username);
+    free((void*)creds->password);
+    free(creds);
+}

src/credentials.h

@@ -0,0 +1,17 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#ifndef ESC_ESC_CREDENTIALS_H
+#define ESC_ESC_CREDENTIALS_H
+
+struct st_credentials {
+    const char* username;
+    const char* password;
+};
+typedef struct st_credentials esc_credentials_t;
+
+esc_credentials_t* esc_credentials_create(const char* username, const char* password);
+void esc_credentials_destroy(esc_credentials_t* creds);
+
+#endif //ESC_ESC_CREDENTIALS_H

src/endpoint_discoverer.c

@@ -0,0 +1,16 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#include "utils/debug.h"
+#include "endpoint_discoverer.h"
+
+const esc_node_endpoints_t* esc_static_discover(const esc_static_endpoint_discoverer_t* discover_data, const ip_endpoint_t* failed_tcp_endpoint) {
+    esc_node_endpoints_t* result = malloc(sizeof(struct st_esc_node_endpoints));
+    if (discover_data->use_ssl_connection) {
+        result->secure_tcp_endpoint = discover_data->tcp_endpoint;
+    } else {
+        result->tcp_endpoint = discover_data->tcp_endpoint;
+    }
+    return result;
+}

src/endpoint_discoverer.h

@@ -0,0 +1,30 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#ifndef ESC_ESC_ENDPOINT_DISCOVERER_H
+#define ESC_ESC_ENDPOINT_DISCOVERER_H
+
+#include "utils/bool.h"
+
+typedef struct st_ip_endpoint {
+    char* host;
+    unsigned short port;
+} ip_endpoint_t;
+
+typedef struct st_esc_node_endpoints {
+    ip_endpoint_t tcp_endpoint;
+    ip_endpoint_t secure_tcp_endpoint;
+} esc_node_endpoints_t;
+
+typedef esc_node_endpoints_t* (*esc_endpoint_discoverer_t)(const void* discover_data, const ip_endpoint_t* failed_tcp_endpoint);
+
+struct st_esc_static_endpoint_discoverer {
+    ip_endpoint_t tcp_endpoint;
+    bool_t use_ssl_connection;
+};
+typedef struct st_esc_static_endpoint_discoverer esc_static_endpoint_discoverer_t;
+
+const esc_node_endpoints_t* esc_static_discover(const esc_static_endpoint_discoverer_t* discover_data, const ip_endpoint_t* failed_tcp_endpoint);
+
+#endif //ESC_ESC_ENDPOINT_DISCOVERER_H

src/esc.c

@@ -1,410 +0,0 @@
-//
-// Created by nicol on 2018-03-18.
-//
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdarg.h>
-#include "esc.h"
-#include "utils/debug.h"
-#include "utils/socket.h"
-#include "proto.h"
-#include "tcp_package.h"
-#include "utils/thread.h"
-#include "utils/mutex.h"
-#include "utils/string.h"
-#include "utils/queue.h"
-#include "tcp_messages.h"
-
-#ifdef _WIN32
-#include <windows.h>
-#define usleep Sleep
-#endif
-#ifdef __linux__
-#include <unistd.h>
-#endif
-
-typedef int bool_t;
-const bool_t BOOL_TRUE = 1;
-const bool_t BOOL_FALSE = 0;
-
-const esc_error_t _error_create(const char* file, int line, int code, char* format, ...) {
-    va_list vl;
-    va_start(vl, format);
-    esc_error_t err;
-    err.file = file;
-    err.line = line;
-    err.code = code;
-    vsnprintf(err.message, ERROR_MSG_SIZE, format, vl);
-    return err;
-}
-#define error_create(code, fmt, args...) _error_create(__FILE__, __LINE__, code, fmt, args)
-
-struct st_connection_settings {
-    bool_t use_ssl_connection;
-};
-
-const esc_connection_settings_t default_connection_settings = {
-};
-
-const esc_connection_settings_t* esc_default_connection_settings = &default_connection_settings;
-
-struct st_tcp_endpoint {
-    char* host;
-    unsigned short port;
-};
-typedef struct st_tcp_endpoint tcp_endpoint_t;
-
-struct st_node_endpoints {
-    tcp_endpoint_t tcp_endpoint;
-    tcp_endpoint_t secure_tcp_endpoint;
-};
-typedef struct st_node_endpoints node_endpoints_t;
-
-typedef const node_endpoints_t* (*endpoint_discoverer_t)(const void* discover_data, const tcp_endpoint_t* failed_tcp_endpoint);
-
-struct st_connection {
-    esc_connection_settings_t settings;
-    const char* name;
-    void* discoverer_data;
-    endpoint_discoverer_t discover;
-    socket_t tcp_conn;
-    ProtobufCAllocator protobuf_c_allocator;
-    thread_t manager_thread;
-	bool_t stop;
-    mutex_t recv_peek_lock;
-    queue_t send_queue;
-    queue_t recv_queue;
-    bool_t has_error;
-    esc_error_t last_error;
-};
-
-struct st_static_endpoint_discoverer {
-    tcp_endpoint_t tcp_endpoint;
-    bool_t use_ssl_connection;
-};
-typedef struct st_static_endpoint_discoverer static_endpoint_discoverer_t;
-
-const node_endpoints_t* static_discover(const static_endpoint_discoverer_t* discover_data, const tcp_endpoint_t* failed_tcp_endpoint) {
-    node_endpoints_t* result = malloc(sizeof(struct st_node_endpoints));
-    if (discover_data->use_ssl_connection) {
-        result->secure_tcp_endpoint = discover_data->tcp_endpoint;
-    } else {
-        result->tcp_endpoint = discover_data->tcp_endpoint;
-    }
-    return result;
-}
-
-//TODO partial transfer
-ssize_t connection_send_tcp_package(esc_connection_t conn, tcp_package_t pkg) {
-    char uuid_buf[37];
-#ifdef _WIN32
-    fprintf(stderr, "connection_send_tcp_package: %s %u %s %llu ", get_string_for_tcp_message(pkg->command), pkg->flags, esc_uuid_format(pkg->correlation_id, uuid_buf, 37), buffer_size(pkg->data));
-#else
-    fprintf(stderr, "connection_send_tcp_package: %s %u %s %lu ", get_string_for_tcp_message(pkg->command), pkg->flags, esc_uuid_format(pkg->correlation_id, uuid_buf, 37), buffer_size(pkg->data));
-#endif
-    buffer_t send_buffer = tcp_package_to_buffer(pkg);
-
-    size_t send_buffer_size = buffer_size(send_buffer);
-    uint32_t size = (uint32_t)send_buffer_size;
-    ssize_t rc;
-    if ((rc = socket_send(conn->tcp_conn, (char *) &size, sizeof(uint32_t))) <= 0) {
-        buffer_destroy(send_buffer);
-        fprintf(stderr, "%d\n", socket_error(conn->tcp_conn));
-        return -1;
-    }
-
-    uint8_t* send_buffer_data = buffer_data(send_buffer);
-    if ((rc = socket_send(conn->tcp_conn, (char *) send_buffer_data, send_buffer_size)) <= 0) {
-        buffer_destroy(send_buffer);
-        fprintf(stderr, "%d\n", socket_error(conn->tcp_conn));
-        return -2;
-    }
-
-    buffer_destroy(send_buffer);
-    fprintf(stderr, "0\n");
-    return 0;
-}
-
-//TODO partial transfer
-tcp_package_t connection_recv_tcp_package(esc_connection_t conn) {
-    uint32_t recv_size;
-    ssize_t rc;
-    if ((rc = socket_recv(conn->tcp_conn, (char *)&recv_size, sizeof(uint32_t))) != 4) {
-#ifdef _WIN32
-        fprintf(stderr, "connection_recv_tcp_package: %lld %d\n", rc, socket_error(conn->tcp_conn));
-#else
-        fprintf(stderr, "connection_recv_tcp_package: %ld %d\n", rc, socket_error(conn->tcp_conn));
-#endif
-        return 0;
-    }
-    buffer_t recv_buffer = buffer_create(recv_size);
-    size_t recv_buffer_size = recv_size;
-    uint8_t* recv_buffer_data = buffer_data(recv_buffer);
-    while(recv_size > 0) {
-        size_t pos = recv_buffer_size - recv_size;
-        rc = socket_recv(conn->tcp_conn, (char *)&recv_buffer_data[pos], recv_size);
-        recv_size -= rc;
-    }
-    tcp_package_t recv_pkg = tcp_package_from_buffer(recv_buffer);
-    buffer_destroy(recv_buffer);
-    char uuid_buf[37];
-#ifdef _WIN32
-    fprintf(stderr, "connection_recv_tcp_package: %s %u %s %llu\n", get_string_for_tcp_message(recv_pkg->command), recv_pkg->flags, esc_uuid_format(recv_pkg->correlation_id, uuid_buf, 37), buffer_size(recv_pkg->data));
-#else
-    fprintf(stderr, "connection_recv_tcp_package: %s %u %s %lu\n", get_string_for_tcp_message(recv_pkg->command), recv_pkg->flags, esc_uuid_format(recv_pkg->correlation_id, uuid_buf, 37), buffer_size(recv_pkg->data));
-#endif
-    return recv_pkg;
-}
-
-inline void connection_enqueue_send(esc_connection_t conn, tcp_package_t pkg) {
-    queue_enqueue(conn->send_queue, pkg);
-}
-
-tcp_package_t connection_wait_for(esc_connection_t conn, esc_uuid_t correlation_id) {
-    tcp_package_t found = 0;
-    while(found == 0) {
-        mutex_lock(conn->recv_peek_lock);
-        tcp_package_t peek = queue_peek(conn->recv_queue);
-        if (peek && esc_uuid_compare(peek->correlation_id, correlation_id) == 0) {
-            queue_dequeue(conn->recv_queue);
-            found = peek;
-        }
-        mutex_unlock(conn->recv_peek_lock);
-		usleep(1);
-    }
-    return found;
-}
-
-void* protobuf_c_alloc(void *alloc_data, size_t size) {
-    return malloc(size);
-}
-
-void protobuf_c_free(void *alloc_data, void* p) {
-    free(p);
-}
-
-esc_connection_t esc_connection_create(const esc_connection_settings_t* connection_settings, const char* addr, const char* connection_name) {
-    struct st_connection* conn = malloc(sizeof(struct st_connection));
-    conn->settings = *connection_settings;
-    conn->protobuf_c_allocator.alloc = protobuf_c_alloc;
-    conn->protobuf_c_allocator.free = protobuf_c_free;
-    conn->protobuf_c_allocator.allocator_data = 0;
-    if (connection_name == 0 || strcmp(connection_name, "") == 0) {
-        esc_uuid_t uuid = esc_uuid_create();
-        char buf[40];
-        esc_uuid_format(uuid, buf, 40);
-        conn->name = string_copy(buf);
-        esc_uuid_destroy(uuid);
-    } else {
-        conn->name = connection_name;
-    }
-    conn->send_queue = queue_create();
-    conn->recv_peek_lock = mutex_create();
-    conn->recv_queue = queue_create();
-    conn->stop = 0;
-    conn->has_error = 0;
-    memset(&conn->last_error, 0, sizeof(struct st_error));
-
-    if (strncmp(addr, "tcp://", 6) != 0) {
-        conn->has_error = 1;
-        conn->last_error = error_create(1, "invalid schema for address: %s", addr);
-        return conn;
-    }
-    char* pos = strrchr(addr, ':');
-    if (pos == 0) {
-        conn->has_error = 1;
-        conn->last_error = error_create(2, "missing port in address: %s", addr);
-        return conn;
-    }
-    char* host = malloc(pos - addr - 5);
-    strncpy(host, addr+6, pos-addr-6);
-    host[pos-addr-6] = 0;
-    unsigned short port = (unsigned short)atoi(pos+1);
-    static_endpoint_discoverer_t discover_data = {
-        {host, port}, connection_settings->use_ssl_connection
-    };
-
-    conn->discoverer_data = malloc(sizeof(struct st_static_endpoint_discoverer));
-    memcpy(conn->discoverer_data, &discover_data, sizeof(struct st_static_endpoint_discoverer));
-    conn->discover = (endpoint_discoverer_t)static_discover;
-
-
-    return conn;
-}
-
-void* connection_thread(void* arg) {
-    esc_connection_t conn = arg;
-
-    while(conn->stop == BOOL_FALSE) {
-        if (socket_writable(conn->tcp_conn)) {
-            tcp_package_t send_pkg = queue_dequeue(conn->send_queue);
-            if (send_pkg != 0) {
-                ssize_t rc = connection_send_tcp_package(conn, send_pkg);
-                if (rc == 0) {
-                    tcp_package_destroy(send_pkg);
-                } else {
-                    fprintf(stderr, "failed to send pkg.");
-                }
-            }
-        }
-
-        if (socket_readable(conn->tcp_conn)) {
-            tcp_package_t recv_pkg = connection_recv_tcp_package(conn);
-            if (recv_pkg == 0) {
-                //TODO Handle connection lost
-                conn->stop = 1;
-            } else if (recv_pkg->command == MESSAGE_HEARTBEATREQUEST) {
-                tcp_package_t heartbeat_pkg = tcp_package_create(MESSAGE_HEARTBEATRESPONSE, recv_pkg->correlation_id, buffer_create(0));
-                queue_enqueue(conn->send_queue, heartbeat_pkg);
-            } else {
-                queue_enqueue(conn->recv_queue, recv_pkg);
-            }
-        }
-
-        usleep(1);
-    }
-
-    printf("manager thread stopping\n");
-}
-
-// return 0 on success
-// return non-zero on failure and sets last_error on connection
-int esc_connection_connect(esc_connection_t conn) {
-    // Discover endpoint
-    const node_endpoints_t* endpoints = conn->discover(conn->discoverer_data, 0);
-    if (endpoints == 0) {
-        return -1;
-    }
-    // Establish Tcp Connection
-    conn->tcp_conn = socket_create(SOCKET_TYPE_TCP);
-    tcp_endpoint_t endpoint = conn->settings.use_ssl_connection ? endpoints->secure_tcp_endpoint : endpoints->tcp_endpoint;
-    if (socket_connect(conn->tcp_conn, endpoint.host, endpoint.port) != 0) {
-        conn->last_error = error_create(socket_error(conn->tcp_conn), "can't connect to %s:%d", endpoint.host, endpoint.port);
-        return -1;
-    }
-	// Start manager thread
-    conn->manager_thread = thread_create(connection_thread, conn);
-    if (thread_start(conn->manager_thread)) {
-        conn->last_error = error_create(thread_error(conn->manager_thread), "can't start manager thread.", "");
-        return -1;
-    }
-	// Identify
-    // build message
-    EventStore__Client__Messages__IdentifyClient identify_client;
-    event_store__client__messages__identify_client__init(&identify_client);
-    identify_client.connection_name = (char*)conn->name;
-    identify_client.version = 1;
-    size_t s = event_store__client__messages__identify_client__get_packed_size(&identify_client);
-    uint8_t buffer[s];
-    event_store__client__messages__identify_client__pack(&identify_client, buffer);
-    // build tcp_package
-    esc_uuid_t correlation_id = esc_uuid_create();
-    tcp_package_t send_pkg = tcp_package_create(MESSAGE_IDENTIFYCLIENT, correlation_id, buffer_from(buffer, s));
-    queue_enqueue(conn->send_queue, send_pkg);
-
-    tcp_package_t recv_pkg = connection_wait_for(conn, correlation_id);
-    if (recv_pkg->command != MESSAGE_CLIENTIDENTIFIED) {
-        conn->last_error = error_create(0, "server error: %d.", recv_pkg->command);
-        tcp_package_destroy(recv_pkg);
-        return -1;
-    }
-
-    tcp_package_destroy(recv_pkg);
-	return 0;
-}
-
-esc_credentials_t esc_credentials_create(const char* username, const char* password) {
-    esc_credentials_t creds = malloc(sizeof(struct st_credentials));
-    creds->username = string_copy(username);
-    creds->password = string_copy(password);
-    return creds;
-}
-
-const esc_recorded_event_t* recorded_event_create(EventStore__Client__Messages__EventRecord* msg) {
-    if (msg == 0) return 0;
-    esc_recorded_event_t* ev = malloc(sizeof(struct st_recorded_event));
-    ev->event_id = esc_uuid_from(msg->event_id.data, msg->event_id.len);
-    ev->event_type = string_copy(msg->event_type);
-    ev->event_number = msg->event_number;
-    ev->event_stream_id = string_copy(msg->event_stream_id);
-    ev->created_epoch = msg->has_created_epoch ? msg->created_epoch : 0;
-    ev->data = buffer_from(msg->data.data, msg->data.len);
-    ev->metadata = buffer_from(msg->metadata.data, msg->metadata.len);
-
-    return ev;
-}
-
-esc_resolved_event_t* resolved_event_create(EventStore__Client__Messages__ResolvedEvent* msg) {
-    esc_resolved_event_t* ev = malloc(sizeof(struct st_resolved_event));
-    ev->original_position.prepare_position = msg->prepare_position;
-    ev->original_position.commit_position = msg->commit_position;
-    ev->event = recorded_event_create(msg->event);
-    ev->link = recorded_event_create(msg->link);
-    return ev;
-}
-
-esc_all_events_slice_t esc_connection_read_all_forward(esc_connection_t conn, const esc_position_t* last_checkpoint, unsigned int count, esc_credentials_t credentials) {
-    //TODO function for packing from client struct direct to protobuf data
-    EventStore__Client__Messages__ReadAllEvents send_msg;
-    event_store__client__messages__read_all_events__init(&send_msg);
-    send_msg.prepare_position = last_checkpoint ? last_checkpoint->prepare_position : 0;
-    send_msg.commit_position = last_checkpoint ? last_checkpoint->commit_position : 0;
-    send_msg.max_count = count;
-    send_msg.require_master = 0;
-    send_msg.resolve_link_tos = 0;
-    size_t s = event_store__client__messages__read_all_events__get_packed_size(&send_msg);
-    uint8_t buffer[s];
-    event_store__client__messages__read_all_events__pack(&send_msg, buffer);
-    esc_uuid_t correlation_id = esc_uuid_create();
-    tcp_package_t send_pkg = tcp_package_create_authenticated(MESSAGE_READALLEVENTSFORWARD, correlation_id, buffer_from(buffer, s), credentials->username, credentials->password);
-    queue_enqueue(conn->send_queue, send_pkg);
-
-    tcp_package_t recv_pkg = connection_wait_for(conn, correlation_id);
-    if (recv_pkg->command != MESSAGE_READALLEVENTSFORWARDCOMPLETED) {
-        conn->last_error = error_create(recv_pkg->command, "server error: %s", get_string_for_tcp_message(recv_pkg->command));
-        return 0;
-    }
-
-    //TODO function for unpacking from protobuf data to client struct
-    size_t data_size = buffer_size(recv_pkg->data);
-    uint8_t* data = buffer_data(recv_pkg->data);
-
-    EventStore__Client__Messages__ReadAllEventsCompleted *recv_msg =
-        event_store__client__messages__read_all_events_completed__unpack(&conn->protobuf_c_allocator, data_size, data);
-
-    esc_all_events_slice_t result = malloc(sizeof(struct st_all_events_slice));
-    result->read_direction = "forward";
-    result->is_end_of_stream = (recv_msg->events == 0 || recv_msg->n_events == 0) ? 1 : 0;
-    result->from_position.prepare_position = recv_msg->prepare_position;
-    result->from_position.commit_position = recv_msg->commit_position;
-    result->next_position.prepare_position = recv_msg->next_prepare_position;
-    result->next_position.commit_position = recv_msg->next_commit_position;
-    result->n_events = recv_msg->n_events;
-    result->events = malloc(recv_msg->n_events * sizeof(void*));
-    for (size_t i = 0; i < recv_msg->n_events; i++) {
-        result->events[i] = resolved_event_create(recv_msg->events[i]);
-    }
-    event_store__client__messages__read_all_events_completed__free_unpacked(recv_msg, &conn->protobuf_c_allocator);
-
-    return result;
-}
-
-void esc_connection_close(esc_connection_t conn) {
-    conn->stop = 1;
-    socket_close(conn->tcp_conn);
-}
-
-inline esc_error_t esc_connection_last_error(esc_connection_t conn) {
-    return conn->last_error;
-}
-
-const char* esc_position_format(const esc_position_t* position, char* buffer, size_t buf_size) {
-#ifdef _WIN32
-    snprintf(buffer, buf_size, "%llu/%llu", position->prepare_position, position->commit_position);
-#else
-    snprintf(buffer, buf_size, "%lu/%lu", position->prepare_position, position->commit_position);
-#endif
-    return buffer;
-}

src/esc.h

@@ -1,80 +0,0 @@
-//
-// Created by nicol on 2018-03-18.
-//
-
-#ifndef ESC_ESC_H
-#define ESC_ESC_H
-
-#include "utils/uuid.h"
-#include "utils/buffer.h"
-
-#define ERROR_MSG_SIZE 1024
-struct st_error {
-    const char* file;
-    int line;
-    int code;
-    char message[ERROR_MSG_SIZE];
-};
-typedef struct st_error esc_error_t;
-
-struct st_connection_settings;
-typedef struct st_connection_settings esc_connection_settings_t;
-
-struct st_connection;
-typedef struct st_connection* esc_connection_t;
-
-struct st_credentials {
-    const char* username;
-    const char* password;
-};
-typedef struct st_credentials* esc_credentials_t;
-
-struct st_esc_position {
-    int64_t prepare_position;
-    int64_t commit_position;
-};
-typedef struct st_esc_position esc_position_t;
-
-struct st_recorded_event {
-    esc_uuid_t event_id;
-    const char* event_type;
-    int64_t event_number;
-    const char *event_stream_id;
-    int64_t created_epoch;
-    buffer_t data;
-    buffer_t metadata;
-};
-typedef struct st_recorded_event esc_recorded_event_t;
-
-struct st_resolved_event {
-    const esc_recorded_event_t* event;
-    const esc_recorded_event_t* link;
-    esc_position_t original_position;
-};
-typedef struct st_resolved_event esc_resolved_event_t;
-
-struct st_all_events_slice {
-    char* read_direction;
-    esc_position_t from_position;
-    esc_position_t next_position;
-    size_t n_events;
-    esc_resolved_event_t** events;
-    int is_end_of_stream;
-};
-typedef struct st_all_events_slice* esc_all_events_slice_t;
-
-const esc_connection_settings_t* esc_default_connection_settings;
-
-// Connection
-esc_connection_t esc_connection_create(const esc_connection_settings_t* connection_settings, const char* addr, const char* connection_name);
-int esc_connection_connect(esc_connection_t conn);
-esc_credentials_t esc_credentials_create(const char* username, const char* password);
-esc_all_events_slice_t esc_connection_read_all_forward(esc_connection_t conn, const esc_position_t* last_checkpoint, unsigned int count, esc_credentials_t credentials);
-void esc_connection_close(esc_connection_t conn);
-
-esc_error_t esc_connection_last_error(esc_connection_t conn);
-
-// Utils
-const char* esc_position_format(const esc_position_t* position, char* buffer, size_t buf_size);
-
-#endif //ESC_ESC_H

src/event_data.c

@@ -0,0 +1,25 @@
+//
+// Created by nicolas on 23/03/18.
+//
+
+#include "event_data.h"
+#include "utils/debug.h"
+#include "utils/string.h"
+
+esc_event_data_t* esc_event_data_create(uuid_t* event_id, const char* event_type, bool_t is_json, buffer_t* data, buffer_t* metadata) {
+    esc_event_data_t* event_data = malloc(sizeof(esc_event_data_t));
+    event_data->event_id = uuid_copy(event_id);
+    event_data->event_type = string_copy(event_type);
+    event_data->is_json = is_json;
+    event_data->data = data ? buffer_copy(data) : 0;
+    event_data->metadata = metadata ? buffer_copy(metadata) : 0;
+    return event_data;
+}
+
+void esc_event_data_destroy(esc_event_data_t* event_data) {
+    uuid_destroy(event_data->event_id);
+    free((void*)event_data->event_type);
+    if (event_data->data) buffer_destroy(event_data->data);
+    if (event_data->metadata) buffer_destroy(event_data->metadata);
+    free(event_data);
+}

src/event_data.h

@@ -0,0 +1,23 @@
+//
+// Created by nicolas on 23/03/18.
+//
+
+#ifndef ESC_EVENT_DATA_H
+#define ESC_EVENT_DATA_H
+
+#include "utils/uuid.h"
+#include "utils/bool.h"
+#include "utils/buffer.h"
+
+typedef struct st_esc_event_data {
+    uuid_t*     event_id;
+    const char* event_type;
+    bool_t      is_json;
+    buffer_t*   data;
+    buffer_t*   metadata;
+} esc_event_data_t;
+
+esc_event_data_t* esc_event_data_create(uuid_t* event_id, const char* event_type, bool_t is_json, buffer_t* data, buffer_t* metadata);
+void esc_event_data_destroy(esc_event_data_t*);
+
+#endif //ESC_EVENT_DATA_H

src/main.c

@@ -1,68 +0,0 @@
-#include <stdio.h>
-#include "utils/debug.h"
-#include "esc.h"
-
-#ifdef _WIN32
-#include <winsock.h>
-#include <windows.h>
-#define usleep Sleep
-#define sleep(x) Sleep(x*1000)
-#endif
-#ifdef __linux__
-#include <unistd.h>
-#endif
-
-int main() {
-#ifdef _WIN32
-    WSADATA wsaData;
-    WSAStartup(MAKEWORD(2,0), &wsaData);
-#endif
-
-    esc_connection_t conn = esc_connection_create(esc_default_connection_settings, "tcp://127.0.0.1:1113", NULL);
-    if (esc_connection_connect(conn) != 0) {
-        esc_error_t err = esc_connection_last_error(conn);
-        fprintf(stderr, "Error: %s code=%d file=%s line=%d", err.message, err.code, err.file, err.line);
-        return -2;
-    }
-    esc_credentials_t credentials = esc_credentials_create("admin", "changeit");
-
-    esc_all_events_slice_t result = 0;
-    do {
-        result = esc_connection_read_all_forward(conn, result ? &result->next_position : NULL, 100, credentials);
-        if (result == 0) {
-            esc_error_t err = esc_connection_last_error(conn);
-            fprintf(stderr, "Error: %s code=%d file=%s line=%d", err.message, err.code, err.file, err.line);
-            return -3;
-        }
-        char posbuf1[44];
-        char posbuf2[44];
-        printf("%s %s %s %u\n", result->read_direction,
-               esc_position_format(&result->from_position, posbuf1, 44),
-               esc_position_format(&result->next_position, posbuf2, 44),
-               result->is_end_of_stream);
-        char uuid_buf[37];
-        for (size_t i = 0; i < result->n_events; i++) {
-#ifdef _WIN32
-            printf("%s %s %lld@%s %llu %llu\n", esc_uuid_format(result->events[i]->event->event_id, uuid_buf, 37),
-#else
-            printf("%s %s %ld@%s %lu %lu\n", esc_uuid_format(result->events[i]->event->event_id, uuid_buf, 37),
-#endif
-                   result->events[i]->event->event_type,
-                   result->events[i]->event->event_number,
-                   result->events[i]->event->event_stream_id,
-                   buffer_size(result->events[i]->event->data),
-                   buffer_size(result->events[i]->event->metadata));
-        }
-    } while(result->is_end_of_stream == 0);
-	
-	sleep(10);
-
-    esc_connection_close(conn);
-
-    dbg_list_allocs();
-
-#ifdef _WIN32
-    WSACleanup();
-#endif
-    return 0;
-}

src/position.c

@@ -0,0 +1,37 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdio.h>
+#include "position.h"
+#include "utils/debug.h"
+
+esc_position_t* esc_position_create(int64_t prepare_position, int64_t commit_position) {
+    esc_position_t* res = malloc(sizeof(struct st_esc_position));
+    res->prepare_position = prepare_position;
+    res->commit_position = commit_position;
+    return res;
+}
+
+inline void esc_position_destroy(esc_position_t* pos) {
+    free(pos);
+}
+
+int esc_position_compare(esc_position_t* left, esc_position_t* right) {
+    if ((left->commit_position < right->commit_position) || ((left->commit_position == right->commit_position) && (left->prepare_position < right->prepare_position)))
+        return -1;
+    if ((left->commit_position > right->commit_position) || ((left->commit_position == right->commit_position) && (left->prepare_position > right->prepare_position)))
+        return 1;
+    return 0;
+}
+
+const char* esc_position_format(esc_position_t* position, char* buffer, size_t buf_size) {
+#ifdef _WIN32
+    snprintf(buffer, buf_size, "%llu/%llu", position->prepare_position, position->commit_position);
+#else
+    snprintf(buffer, buf_size, "%lu/%lu", position->prepare_position, position->commit_position);
+#endif
+    return buffer;
+}

src/position.h

@@ -0,0 +1,20 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#ifndef ESC_ESC_POSITION_H
+#define ESC_ESC_POSITION_H
+
+#include <stdint.h>
+
+typedef struct st_esc_position {
+    int64_t prepare_position;
+    int64_t commit_position;
+} esc_position_t;
+
+esc_position_t* esc_position_create(int64_t prepare_position, int64_t commit_position);
+void esc_position_destroy(esc_position_t*);
+int esc_position_compare(esc_position_t* left, esc_position_t* right);
+const char* esc_position_format(esc_position_t* position, char* buffer, size_t buf_len);
+
+#endif //ESC_ESC_POSITION_H

src/proto_helper.c

@@ -0,0 +1,213 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#include "utils/debug.h"
+#include "utils/string.h"
+#include "results.h"
+#include "proto_helper.h"
+#include "proto.h"
+#include "utils/bool.h"
+#include "event_data.h"
+
+void* protobuf_c_alloc(void *alloc_data, size_t size) {
+    return malloc(size);
+}
+
+void protobuf_c_free(void *alloc_data, void* p) {
+    free(p);
+}
+
+ProtobufCAllocator protobuf_allocator = {
+    protobuf_c_alloc, protobuf_c_free, 0
+};
+
+inspection_result_t* inspection_result_create(operation_decision_t decision, const char* description, error_t* error) {
+    inspection_result_t* inspection_result = malloc(sizeof(inspection_result_t));
+    inspection_result->decision = decision;
+    inspection_result->description = description;
+    inspection_result->error = error;
+    return inspection_result;
+}
+
+void inspection_result_destroy(inspection_result_t* inspection_result) {
+    free(inspection_result->error);
+    free(inspection_result);
+}
+
+buffer_t* esc_identify_client_pack(const char* connection_name) {
+    EventStore__Client__Messages__IdentifyClient identify_client;
+    event_store__client__messages__identify_client__init(&identify_client);
+    identify_client.connection_name = (char*)connection_name;
+    identify_client.version = 1;
+    size_t msg_size = event_store__client__messages__identify_client__get_packed_size(&identify_client);
+    uint8_t msg_buf[msg_size];
+    event_store__client__messages__identify_client__pack(&identify_client, msg_buf);
+    return buffer_copyfrom(msg_buf, msg_size);
+}
+
+esc_recorded_event_t* esc_recorded_event_unpack(EventStore__Client__Messages__EventRecord* msg) {
+    if (msg == 0) return 0;
+    esc_recorded_event_t* ev = malloc(sizeof(struct st_recorded_event));
+    ev->event_id = uuid_from(msg->event_id.data, msg->event_id.len);
+    ev->event_type = string_copy(msg->event_type);
+    ev->event_number = msg->event_number;
+    ev->event_stream_id = string_copy(msg->event_stream_id);
+    ev->created_epoch = msg->has_created_epoch ? msg->created_epoch : 0;
+    ev->data = buffer_copyfrom(msg->data.data, msg->data.len);
+    ev->metadata = buffer_copyfrom(msg->metadata.data, msg->metadata.len);
+    //event_store__client__messages__event_record__free_unpacked(msg, &protobuf_allocator);
+    return ev;
+}
+
+esc_resolved_event_t* esc_resolved_event_unpack(EventStore__Client__Messages__ResolvedEvent* msg) {
+    esc_resolved_event_t* ev = malloc(sizeof(struct st_resolved_event));
+    ev->original_position = esc_position_create(msg->prepare_position, msg->commit_position);
+    ev->event = esc_recorded_event_unpack(msg->event);
+    ev->link = esc_recorded_event_unpack(msg->link);
+    //event_store__client__messages__resolved_event__free_unpacked(msg, &protobuf_allocator);
+    return ev;
+}
+
+const char* get_string_for_all_events_result(int result) {
+    switch(result) {
+        case EVENT_STORE__CLIENT__MESSAGES__READ_ALL_EVENTS_COMPLETED__READ_ALL_RESULT__Success: return "Success";
+        case EVENT_STORE__CLIENT__MESSAGES__READ_ALL_EVENTS_COMPLETED__READ_ALL_RESULT__NotModified: return "Not Modified";
+        case EVENT_STORE__CLIENT__MESSAGES__READ_ALL_EVENTS_COMPLETED__READ_ALL_RESULT__AccessDenied: return "Access Denied";
+        case EVENT_STORE__CLIENT__MESSAGES__READ_ALL_EVENTS_COMPLETED__READ_ALL_RESULT__Error: return "Error";
+        default: return "Unknown";
+    }
+}
+
+inspection_result_t* esc_all_events_slice_unpack(buffer_t* buffer, esc_all_events_slice_t** all_events_slice_p) {
+    EventStore__Client__Messages__ReadAllEventsCompleted *recv_msg =
+            event_store__client__messages__read_all_events_completed__unpack(
+                    &protobuf_allocator,
+                    buffer_size(buffer),
+                    buffer_data(buffer));
+
+    inspection_result_t* inspection_result;
+    switch (recv_msg->result) {
+        case EVENT_STORE__CLIENT__MESSAGES__READ_ALL_EVENTS_COMPLETED__READ_ALL_RESULT__Success: {
+            esc_all_events_slice_t *all_events_slice = malloc(sizeof(struct st_all_events_slice));
+            all_events_slice->read_direction = "forward";
+            all_events_slice->is_end_of_stream = (recv_msg->events == 0 || recv_msg->n_events == 0) ? 1 : 0;
+            all_events_slice->from_position = esc_position_create(recv_msg->prepare_position,
+                                                                  recv_msg->commit_position);
+            all_events_slice->next_position = esc_position_create(recv_msg->next_prepare_position,
+                                                                  recv_msg->next_commit_position);
+            all_events_slice->n_events = recv_msg->n_events;
+            all_events_slice->events = malloc(recv_msg->n_events * sizeof(void *));
+            for (size_t i = 0; i < recv_msg->n_events; i++) {
+                all_events_slice->events[i] = esc_resolved_event_unpack(recv_msg->events[i]);
+            }
+            *all_events_slice_p = all_events_slice;
+            inspection_result = inspection_result_create(Operation_Decision_EndOperation, "Success", 0);
+            break;
+        }
+        case EVENT_STORE__CLIENT__MESSAGES__READ_ALL_EVENTS_COMPLETED__READ_ALL_RESULT__Error: {
+            error_t* error = error_create(recv_msg->result, "Server error: %s", recv_msg->error);
+            inspection_result = inspection_result_create(Operation_Decision_EndOperation, "Error", error);
+            break;
+        }
+        case EVENT_STORE__CLIENT__MESSAGES__READ_ALL_EVENTS_COMPLETED__READ_ALL_RESULT__AccessDenied: {
+            error_t* error = error_create(recv_msg->result, "Access denied: %s %s", "Read", "All");
+            inspection_result = inspection_result_create(Operation_Decision_EndOperation, "AccessDenied", error);
+            break;
+        }
+        default: {
+            error_t* error = error_create(recv_msg->result, "Unexpected ReadStreamResult %s", get_string_for_all_events_result(recv_msg->result));
+            inspection_result = inspection_result_create(Operation_Decision_EndOperation, "Unexpected", error);
+            break;
+        }
+    }
+    event_store__client__messages__read_all_events_completed__free_unpacked(recv_msg, &protobuf_allocator);
+    return inspection_result;
+}
+
+buffer_t* esc_read_all_forward_pack(esc_position_t* last_checkpoint, int32_t count, bool_t resolve_link_tos) {
+    EventStore__Client__Messages__ReadAllEvents send_msg;
+    event_store__client__messages__read_all_events__init(&send_msg);
+    send_msg.prepare_position = last_checkpoint ? last_checkpoint->prepare_position : 0;
+    send_msg.commit_position = last_checkpoint ? last_checkpoint->commit_position : 0;
+    send_msg.max_count = count;
+    send_msg.require_master = 0;
+    send_msg.resolve_link_tos = resolve_link_tos;
+    size_t s = event_store__client__messages__read_all_events__get_packed_size(&send_msg);
+    uint8_t buffer[s];
+    event_store__client__messages__read_all_events__pack(&send_msg, buffer);
+    return buffer_copyfrom(buffer, s);
+}
+
+const char* get_string_for_write_result(int write_result) {
+    switch(write_result) {
+        case EVENT_STORE__CLIENT__MESSAGES__OPERATION_RESULT__Success: return "Success";
+        case EVENT_STORE__CLIENT__MESSAGES__OPERATION_RESULT__PrepareTimeout: return "PrepareTimeout";
+        case EVENT_STORE__CLIENT__MESSAGES__OPERATION_RESULT__CommitTimeout: return "CommitTimeout";
+        case EVENT_STORE__CLIENT__MESSAGES__OPERATION_RESULT__ForwardTimeout: return "ForwardTimeout";
+        case EVENT_STORE__CLIENT__MESSAGES__OPERATION_RESULT__WrongExpectedVersion: return "WrongExpectedVersion";
+        case EVENT_STORE__CLIENT__MESSAGES__OPERATION_RESULT__StreamDeleted: return "StreamDeleted";
+        case EVENT_STORE__CLIENT__MESSAGES__OPERATION_RESULT__InvalidTransaction: return "InvalidTransaction";
+        case EVENT_STORE__CLIENT__MESSAGES__OPERATION_RESULT__AccessDenied: return "AccessDenied";
+        default: return "Unknown";
+    }
+}
+
+inspection_result_t* esc_write_result_unpack(buffer_t* buffer, esc_write_result_t** write_result_p) {
+    EventStore__Client__Messages__WriteEventsCompleted* recv_msg =
+        event_store__client__messages__write_events_completed__unpack(&protobuf_allocator, buffer_size(buffer), buffer_data(buffer));
+    inspection_result_t* inspection_result;
+    switch(recv_msg->result) {
+        case EVENT_STORE__CLIENT__MESSAGES__OPERATION_RESULT__Success: {
+            esc_write_result_t *write_result = malloc(sizeof(esc_write_result_t));
+            write_result->next_expected_version = recv_msg->last_event_number;
+            write_result->log_position = esc_position_create(
+                    recv_msg->prepare_position ? recv_msg->prepare_position : -1,
+                    recv_msg->commit_position ? recv_msg->commit_position : -1);
+            *write_result_p = write_result;
+            inspection_result = inspection_result_create(Operation_Decision_EndOperation, "Success", 0);
+            break;
+        }
+        default: {
+            error_t* error = error_create(recv_msg->result, "Unexpected OperationResult %s", get_string_for_write_result(recv_msg->result));
+            inspection_result = inspection_result_create(Operation_Decision_EndOperation, "Unexpected", error);
+            break;
+        }
+    }
+    event_store__client__messages__write_events_completed__free_unpacked(recv_msg, &protobuf_allocator);
+    return inspection_result;
+}
+
+buffer_t* esc_append_to_stream_pack(const char* stream, int64_t expected_version, array_t* events) {
+    EventStore__Client__Messages__WriteEvents send_msg;
+    event_store__client__messages__write_events__init(&send_msg);
+    send_msg.event_stream_id = (char*)stream;
+    send_msg.expected_version = expected_version;
+    send_msg.require_master = 0;
+    send_msg.n_events = events->size;
+    send_msg.events = malloc(events->size * sizeof(EventStore__Client__Messages__NewEvent*));
+    for (size_t i = 0; i < events->size; i++) {
+        esc_event_data_t* event_data = events->data[i];
+        EventStore__Client__Messages__NewEvent* new_event = malloc(sizeof(EventStore__Client__Messages__NewEvent));
+        event_store__client__messages__new_event__init(new_event);
+        new_event->event_id.data = (uint8_t *)event_data->event_id;
+        new_event->event_id.len = 16;
+        new_event->metadata.data = event_data->metadata ? buffer_data(event_data->metadata) : 0;
+        new_event->metadata.len = event_data->metadata ? buffer_size(event_data->metadata) : 0;
+        new_event->data.data = event_data->data ? buffer_data(event_data->data) : 0;
+        new_event->data.len = event_data->data ? buffer_size(event_data->data) : 0;
+        new_event->event_type = (char*)event_data->event_type;
+        new_event->data_content_type = event_data->is_json ? 1 : 0;
+        new_event->metadata_content_type = event_data->is_json ? 1 : 0;
+        new_event->has_metadata = event_data->metadata ? 1 : 0;
+        send_msg.events[i] = new_event;
+    }
+    size_t size = event_store__client__messages__write_events__get_packed_size(&send_msg);
+    uint8_t buffer[size];
+    event_store__client__messages__write_events__pack(&send_msg, buffer);
+    for (size_t i = 0; i < events->size; i++) {
+        free(send_msg.events[i]);
+    }
+    free(send_msg.events);
+    return buffer_copyfrom(buffer, size);
+}

src/proto_helper.h

@@ -0,0 +1,39 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#ifndef ESC_PROTO_HELPER_H
+#define ESC_PROTO_HELPER_H
+
+#include "utils/array.h"
+#include "utils/buffer.h"
+#include "utils/bool.h"
+#include "utils/error.h"
+#include "results.h"
+
+typedef enum {
+    Operation_Decision_DoNothing,
+    Operation_Decision_EndOperation,
+    Operation_Decision_Retry,
+    Operation_Decision_Reconnect,
+    Operation_Decision_Subscribed
+} operation_decision_t;
+
+typedef struct {
+    operation_decision_t    decision;
+    const char*             description;
+    error_t*                error;
+} inspection_result_t;
+void inspection_result_destroy(inspection_result_t*);
+
+buffer_t* esc_identify_client_pack(const char* connection_name);
+
+inspection_result_t* esc_all_events_slice_unpack(buffer_t* buffer, esc_all_events_slice_t** all_events_slice_p);
+buffer_t* esc_read_all_forward_pack(esc_position_t* last_checkpoint, int32_t count, bool_t resolve_link_tos);
+const char* get_string_for_all_events_result(int result);
+
+inspection_result_t* esc_write_result_unpack(buffer_t* buffer, esc_write_result_t** write_result_p);
+buffer_t* esc_append_to_stream_pack(const char* stream, int64_t expected_version, array_t* events);
+const char* get_string_for_write_result(int result);
+
+#endif //ESC_PROTO_HELPER_H

src/results.c

@@ -0,0 +1,39 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#include "utils/debug.h"
+#include "position.h"
+#include "results.h"
+
+void esc_recorded_event_destroy(esc_recorded_event_t* recorded_event) {
+    uuid_destroy(recorded_event->event_id);
+    free((void*)recorded_event->event_type);
+    free((void*)recorded_event->event_stream_id);
+    buffer_destroy(recorded_event->data);
+    buffer_destroy(recorded_event->metadata);
+    free(recorded_event);
+}
+
+void esc_resolved_event_destroy(esc_resolved_event_t* resolved_event) {
+    if (resolved_event->original_position) esc_position_destroy(resolved_event->original_position);
+    if (resolved_event->event) esc_recorded_event_destroy(resolved_event->event);
+    if (resolved_event->link) esc_recorded_event_destroy(resolved_event->link);
+    free(resolved_event);
+}
+
+
+void esc_all_events_slice_destroy(esc_all_events_slice_t* all_events_slice) {
+    esc_position_destroy(all_events_slice->from_position);
+    esc_position_destroy(all_events_slice->next_position);
+    for (size_t i = 0; i < all_events_slice->n_events; i++) {
+        esc_resolved_event_destroy(all_events_slice->events[i]);
+    }
+    free(all_events_slice->events);
+    free(all_events_slice);
+}
+
+void esc_write_result_destroy(esc_write_result_t* write_result) {
+    esc_position_destroy(write_result->log_position);
+    free(write_result);
+}

src/results.h

@@ -0,0 +1,50 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#ifndef ESC_RESULTS_H
+#define ESC_RESULTS_H
+
+#include "utils/uuid.h"
+#include "utils/buffer.h"
+#include "position.h"
+
+struct st_recorded_event {
+    uuid_t* event_id;
+    const char* event_type;
+    int64_t event_number;
+    const char *event_stream_id;
+    int64_t created_epoch;
+    buffer_t* data;
+    buffer_t* metadata;
+};
+typedef struct st_recorded_event esc_recorded_event_t;
+
+struct st_resolved_event {
+    esc_recorded_event_t* event;
+    esc_recorded_event_t* link;
+    esc_position_t* original_position;
+};
+typedef struct st_resolved_event esc_resolved_event_t;
+
+struct st_all_events_slice {
+    char* read_direction;
+    esc_position_t* from_position;
+    esc_position_t* next_position;
+    size_t n_events;
+    esc_resolved_event_t** events;
+    int is_end_of_stream;
+};
+typedef struct st_all_events_slice esc_all_events_slice_t;
+
+typedef struct st_esc_write_result_t {
+    int64_t next_expected_version;
+    esc_position_t* log_position;
+} esc_write_result_t;
+
+void esc_recorded_event_destroy(esc_recorded_event_t* recorded_event);
+void esc_resolved_event_destroy(esc_resolved_event_t* resolved_event);
+void esc_all_events_slice_destroy(esc_all_events_slice_t* all_events_slice);
+void esc_write_result_destroy(esc_write_result_t* write_result);
+
+#endif //ESC_RESULTS_H

src/tcp_package.c

@@ -16,37 +16,37 @@ const uint32_t CorrelationOffset = 2;
 const uint32_t AuthOffset = 18;
 const uint32_t MandatorySize = 18;
 
-tcp_package_t tcp_package_create(uint8_t command, esc_uuid_t correlation_id, buffer_t data) {
+tcp_package_t* tcp_package_create(uint8_t command, uuid_t* correlation_id, buffer_t* data) {
-    tcp_package_t pkg = malloc(sizeof(struct st_tcp_package));
+    tcp_package_t* pkg = malloc(sizeof(struct st_tcp_package));
     pkg->command = command;
     pkg->flags = 0;
-    pkg->correlation_id = esc_uuid_copy(correlation_id);
+    pkg->correlation_id = uuid_copy(correlation_id);
     pkg->login = 0;
     pkg->password = 0;
     pkg->data = data;
     return pkg;
 }
 
-tcp_package_t tcp_package_create_authenticated(uint8_t command, esc_uuid_t correlation_id, buffer_t data, const char* username, const char* password) {
+tcp_package_t* tcp_package_create_authenticated(uint8_t command, uuid_t* correlation_id, buffer_t* data, const char* username, const char* password) {
-    tcp_package_t pkg = malloc(sizeof(struct st_tcp_package));
+    tcp_package_t* pkg = malloc(sizeof(struct st_tcp_package));
     pkg->command = command;
     pkg->flags = 1;
-    pkg->correlation_id = esc_uuid_copy(correlation_id);
+    pkg->correlation_id = uuid_copy(correlation_id);
     pkg->login = string_copy(username);
     pkg->password = string_copy(password);
     pkg->data = data;
     return pkg;
 }
 
-void tcp_package_destroy(tcp_package_t pkg) {
+void tcp_package_destroy(tcp_package_t* pkg) {
     free((void*)pkg->login);
     free((void*)pkg->password);
-    esc_uuid_destroy(pkg->correlation_id);
+    uuid_destroy(pkg->correlation_id);
     buffer_destroy(pkg->data);
     free(pkg);
 }
 
-buffer_t tcp_package_to_buffer(tcp_package_t pkg) {
+buffer_t* tcp_package_to_buffer(tcp_package_t* pkg) {
     size_t data_size = buffer_size(pkg->data);
     uint8_t* buf = malloc(MandatorySize + data_size + (pkg->flags ? 257*2 : 0));
     buf[CommandOffset] = pkg->command;
@@ -73,10 +73,12 @@ buffer_t tcp_package_to_buffer(tcp_package_t pkg) {
     }
     fprintf(stderr, "\n");
     */
-    return buffer_from(buf, size);
+    buffer_t* res = buffer_copyfrom(buf, size);
+    free(buf);
+    return res;
 }
 
-tcp_package_t tcp_package_from_buffer(buffer_t buffer) {
+tcp_package_t* tcp_package_from_buffer(buffer_t* buffer) {
     size_t buf_size = buffer_size(buffer);
     uint8_t* buf_data = buffer_data(buffer);
     /*
@@ -85,10 +87,10 @@ tcp_package_t tcp_package_from_buffer(buffer_t buffer) {
     }
     fprintf(stderr, "\n");
     */
-    tcp_package_t pkg = malloc(sizeof(struct st_tcp_package));
+    tcp_package_t* pkg = malloc(sizeof(struct st_tcp_package));
     pkg->command = buf_data[CommandOffset];
     pkg->flags = buf_data[FlagsOffset];
-    pkg->correlation_id = esc_uuid_from(&buf_data[CorrelationOffset], 16);
+    pkg->correlation_id = uuid_from(&buf_data[CorrelationOffset], 16);
     if (pkg->flags) {
         size_t l_len = buf_data[AuthOffset];
         size_t p_len = buf_data[AuthOffset+1+l_len];

src/tcp_package.h

@@ -11,17 +11,17 @@
 struct st_tcp_package {
     uint8_t command;
     uint8_t flags;
-    esc_uuid_t correlation_id;
+    uuid_t* correlation_id;
     const char* login;
     const char* password;
-    buffer_t data;
+    buffer_t* data;
 };
-typedef struct st_tcp_package* tcp_package_t;
+typedef struct st_tcp_package tcp_package_t;
 
-tcp_package_t tcp_package_create(uint8_t command, esc_uuid_t correlation_id, buffer_t data);
+tcp_package_t* tcp_package_create(uint8_t command, uuid_t* correlation_id, buffer_t* data);
-tcp_package_t tcp_package_create_authenticated(uint8_t command, esc_uuid_t correlation_id, buffer_t data, const char* username, const char* password);
+tcp_package_t* tcp_package_create_authenticated(uint8_t command, uuid_t* correlation_id, buffer_t* data, const char* username, const char* password);
-void tcp_package_destroy(tcp_package_t pkg);
+void tcp_package_destroy(tcp_package_t* pkg);
-buffer_t tcp_package_to_buffer(tcp_package_t pkg);
+buffer_t* tcp_package_to_buffer(tcp_package_t* pkg);
-tcp_package_t tcp_package_from_buffer(buffer_t buffer);
+tcp_package_t* tcp_package_from_buffer(buffer_t* buffer);
 
 #endif //ESC_TCP_PACKAGE_H

src/utils/array.c

@@ -0,0 +1,33 @@
+//
+// Created by nicolas on 23/03/18.
+//
+
+#include <stdarg.h>
+#include "array.h"
+#include "debug.h"
+
+array_t* array_create(size_t n, ...) {
+    va_list vl;
+    va_start(vl, n);
+
+    array_t* arr = malloc(sizeof(array_t));
+    arr->size = n;
+    arr->data = malloc(n * sizeof(void*));
+
+    for (size_t i = 0; i < n; i++) {
+        void* item = va_arg(vl, void*);
+        arr->data[i] = item;
+    }
+
+    return arr;
+}
+
+void array_destroy(array_t* array, array_deallocator destroyer) {
+    if (destroyer) {
+        for (size_t i=0;i<array->size;i++) {
+            destroyer(array->data[i]);
+        }
+    }
+    free(array->data);
+    free(array);
+}

src/utils/array.h

@@ -0,0 +1,20 @@
+//
+// Created by nicolas on 23/03/18.
+//
+
+#ifndef ESC_ARRAY_H
+#define ESC_ARRAY_H
+
+#include <stddef.h>
+
+typedef struct st_array {
+    size_t size;
+    void** data;
+} array_t;
+
+typedef void (*array_deallocator)(void*);
+
+array_t* array_create(size_t n, ...);
+void array_destroy(array_t* array, array_deallocator destroyer);
+
+#endif //ESC_ARRAY_H

src/utils/bool.h

@@ -0,0 +1,13 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#ifndef ESC_BOOL_H
+#define ESC_BOOL_H
+
+typedef int bool_t;
+
+#define BOOL_TRUE 1
+#define BOOL_FALSE 0
+
+#endif //ESC_BOOL_H

src/utils/buffer.c

@@ -13,31 +13,31 @@ struct st_buffer {
     uint8_t  own_data;
 };
 
-buffer_t buffer_create(size_t size) {
+buffer_t* buffer_create(size_t size) {
-    buffer_t buf = malloc(sizeof(struct st_buffer));
+    buffer_t* buf = malloc(sizeof(struct st_buffer));
     buf->size = size;
     buf->data = malloc(size);
     buf->own_data = 1;
     return buf;
 }
 
-inline void buffer_destroy(buffer_t buffer) {
+inline void buffer_destroy(buffer_t* buffer) {
     if (buffer->own_data) {
         free(buffer->data);
     }
     free(buffer);
 }
 
-buffer_t buffer_from(const uint8_t* data, size_t size) {
+buffer_t* buffer_from(const uint8_t* data, size_t size) {
-    buffer_t buf = malloc(sizeof(struct st_buffer));
+    buffer_t* buf = malloc(sizeof(struct st_buffer));
     buf->size = size;
     buf->data = (uint8_t*)data;
     buf->own_data = 0;
     return buf;
 }
 
-buffer_t buffer_copyfrom(const uint8_t* data, size_t size) {
+buffer_t* buffer_copyfrom(const uint8_t* data, size_t size) {
-    buffer_t buf = malloc(sizeof(struct st_buffer));
+    buffer_t* buf = malloc(sizeof(struct st_buffer));
     buf->size = size;
     buf->data = malloc(size);
     memcpy(buf->data, data, size);
@@ -45,10 +45,18 @@ buffer_t buffer_copyfrom(const uint8_t* data, size_t size) {
     return buf;
 }
 
-inline size_t buffer_size(buffer_t buffer) {
+inline size_t buffer_size(buffer_t* buffer) {
     return buffer->size;
 }
 
-inline uint8_t* buffer_data(buffer_t buffer) {
+inline uint8_t* buffer_data(buffer_t* buffer) {
     return buffer->data;
 }
+
+buffer_t* buffer_from_string(const char* str) {
+    return buffer_copyfrom((uint8_t*)str, strlen(str));
+}
+
+buffer_t* buffer_copy(buffer_t* buffer) {
+    return buffer_copyfrom(buffer->data, buffer->size);
+}

src/utils/buffer.h

@@ -8,13 +8,15 @@
 #include <stdint.h>
 #include <stddef.h>
 
-typedef struct st_buffer* buffer_t;
+typedef struct st_buffer buffer_t;
 
-buffer_t buffer_create(size_t size);
+buffer_t* buffer_create(size_t size);
-void buffer_destroy(buffer_t buffer);
+void buffer_destroy(buffer_t* buffer);
-buffer_t buffer_from(const uint8_t* data, size_t size);
+buffer_t* buffer_from(const uint8_t* data, size_t size);
-buffer_t buffer_copyfrom(const uint8_t* data, size_t size);
+buffer_t* buffer_from_string(const char* str);
-size_t buffer_size(buffer_t buffer);
+buffer_t* buffer_copyfrom(const uint8_t* data, size_t size);
-uint8_t* buffer_data(buffer_t buffer);
+buffer_t* buffer_copy(buffer_t* other);
+size_t buffer_size(buffer_t* buffer);
+uint8_t* buffer_data(buffer_t* buffer);
 
 #endif //ESC_BUFFER_H

src/utils/debug.c

@@ -4,10 +4,14 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
+
 void* (*_malloc)(size_t) = malloc;
 void (*_free)(void*) = free;
 #include "debug.h"
 
+#define DBG_ALLOC_INC_SIZE  1024
+
 struct st_alloc {
     const char* file;
     int line;
@@ -20,8 +24,9 @@ struct st_alloc* _allocations = 0;
 
 void* dbg_malloc(const char* file, int line, size_t size) {
     if (_allocations_count == _allocations_size) {
-        _allocations = _allocations_size == 0 ? _malloc(1024*sizeof(struct st_alloc)) : realloc(_allocations, (_allocations_size + 1024)*sizeof(struct st_alloc));
+        _allocations = _allocations_size == 0 ? _malloc(DBG_ALLOC_INC_SIZE*sizeof(struct st_alloc)) : realloc(_allocations, (_allocations_size + DBG_ALLOC_INC_SIZE)*sizeof(struct st_alloc));
-        _allocations_size += 1024;
+        memset(&_allocations[_allocations_size], 0, DBG_ALLOC_INC_SIZE * sizeof(struct st_alloc));
+        _allocations_size += DBG_ALLOC_INC_SIZE;
     }
     void* ptr = _malloc(size);
     struct st_alloc* alloc = &_allocations[_allocations_count++];
@@ -33,20 +38,24 @@ void* dbg_malloc(const char* file, int line, size_t size) {
 }
 
 void dbg_free(void* ptr) {
+    struct st_alloc* found = 0;
     for (size_t i = 0; i < _allocations_count; i++) {
-        if (_allocations[i].ptr == ptr) _allocations[i].ptr = 0;
+        if (_allocations[i].ptr == ptr) found = &_allocations[i];
     }
+    if (found) found->ptr = 0;
+
     _free(ptr);
 }
 
-
 void dbg_list_allocs() {
     size_t total = 0;
+    size_t count = 0;
     printf("Memory leaks:\n");
     for (size_t i = 0; i < _allocations_count; i++) {
         if (_allocations[i].ptr == 0) continue;
         printf("%lu %p (%lu) @ %s:%d\n", i, _allocations[i].ptr, _allocations[i].size, _allocations[i].file, _allocations[i].line);
         total += _allocations[i].size;
+        count++;
     }
-    printf("Total memory leaked: %lu\n", total);
+    printf("Totals: nb=%lu memory=%lu\n", count, total);
 }

src/utils/error.c

@@ -0,0 +1,29 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <assert.h>
+#include <string.h>
+#include "error.h"
+#include "debug.h"
+
+error_t* _error_create(const char* file, int line, int code, char* format, ...) {
+    va_list vl;
+    va_start(vl, format);
+    error_t* err = malloc(sizeof(struct st_error));
+    assert(err != 0);
+    err->file = file;
+    err->line = line;
+    err->code = code;
+    vsnprintf(err->message, ERROR_MSG_SIZE, format, vl);
+    return err;
+}
+#define error_create(code, fmt, args...) _error_create(__FILE__, __LINE__, code, fmt, args)
+
+error_t* error_copy(error_t* err) {
+    error_t* copy = malloc(sizeof(error_t));
+    memcpy(copy, err, sizeof(error_t));
+    return copy;
+}

src/utils/error.h

@@ -0,0 +1,21 @@
+//
+// Created by nicolas on 22/03/18.
+//
+
+#ifndef ESC_ERROR_H
+#define ESC_ERROR_H
+
+#define ERROR_MSG_SIZE 1024
+struct st_error {
+    const char* file;
+    int line;
+    int code;
+    char message[ERROR_MSG_SIZE];
+};
+typedef struct st_error error_t;
+
+error_t* _error_create(const char* file, int line, int code, char* format, ...);
+#define error_create(code, fmt, args...) _error_create(__FILE__, __LINE__, code, fmt, args)
+error_t* error_copy(error_t* error);
+
+#endif //ESC_ERROR_H

src/utils/event.c

@@ -0,0 +1,37 @@
+//
+// Created by nicolas on 23/03/18.
+//
+
+#include "event.h"
+#include "debug.h"
+
+#ifdef __linux__
+#include <pthread.h>
+
+struct st_event {
+    pthread_mutex_t mutex;
+    pthread_cond_t handle;
+};
+
+event_t* event_create() {
+    event_t* event = malloc(sizeof(event_t));
+    pthread_mutex_init(&event->mutex, 0);
+    pthread_cond_init(&event->handle, 0);
+    return event;
+}
+
+void event_destroy(event_t* event) {
+    pthread_mutex_destroy(&event->mutex);
+    pthread_cond_destroy(&event->handle);
+    free(event);
+}
+
+void event_wait(event_t* event) {
+    pthread_cond_wait(&event->handle, &event->mutex);
+}
+
+void event_set(event_t* event) {
+    pthread_cond_broadcast(&event->handle);
+}
+
+#endif

src/utils/event.h

@@ -0,0 +1,15 @@
+//
+// Created by nicolas on 23/03/18.
+//
+
+#ifndef ESC_EVENT_H
+#define ESC_EVENT_H
+
+typedef struct st_event event_t;
+
+event_t* event_create();
+void event_destroy(event_t* event);
+void event_wait(event_t* event);
+void event_set(event_t* event);
+
+#endif //ESC_EVENT_H

src/utils/mutex.c

@@ -16,21 +16,21 @@ struct st_mutex {
     CRITICAL_SECTION handle;
 };
 
-mutex_t mutex_create() {
+mutex_t* mutex_create() {
-    mutex_t mutex = malloc(sizeof(struct st_mutex));
+    mutex_t* mutex = malloc(sizeof(struct st_mutex));
     InitializeCriticalSection(&mutex->handle);
     return mutex;
 }
 
-void mutex_lock(mutex_t mutex) {
+void mutex_lock(mutex_t* mutex) {
     EnterCriticalSection(&mutex->handle);
 }
 
-void mutex_unlock(mutex_t mutex) {
+void mutex_unlock(mutex_t* mutex) {
     LeaveCriticalSection(&mutex->handle);
 }
 
-void mutex_destroy(mutex_t mutex) {
+void mutex_destroy(mutex_t* mutex) {
     DeleteCriticalSection(&mutex->handle);
 }
 #endif
@@ -41,22 +41,23 @@ struct st_mutex {
     pthread_mutex_t handle;
 };
 
-mutex_t mutex_create() {
+mutex_t* mutex_create() {
-    mutex_t mutex = malloc(sizeof(struct st_mutex));
+    mutex_t* mutex = malloc(sizeof(struct st_mutex));
     pthread_mutex_init(&mutex->handle, 0);
     return mutex;
 }
 
-void mutex_lock(mutex_t mutex) {
+void mutex_lock(mutex_t* mutex) {
     pthread_mutex_lock(&mutex->handle);
 }
 
-void mutex_unlock(mutex_t mutex) {
+void mutex_unlock(mutex_t* mutex) {
     pthread_mutex_unlock(&mutex->handle);
 }
 
-void mutex_destroy(mutex_t mutex) {
+void mutex_destroy(mutex_t* mutex) {
     pthread_mutex_destroy(&mutex->handle);
     free(mutex);
 }
+
 #endif

src/utils/mutex.h

@@ -5,11 +5,11 @@
 #ifndef ESC_MUTEX_H
 #define ESC_MUTEX_H
 
-typedef struct st_mutex* mutex_t;
+typedef struct st_mutex mutex_t;
 
-mutex_t mutex_create();
+mutex_t* mutex_create();
-void mutex_lock(mutex_t mutex);
+void mutex_lock(mutex_t* mutex);
-void mutex_unlock(mutex_t mutex);
+void mutex_unlock(mutex_t* mutex);
-void mutex_destroy(mutex_t mutex);
+void mutex_destroy(mutex_t* mutex);
 
 #endif //ESC_MUTEX_H

src/utils/queue.c

@@ -14,14 +14,14 @@ struct st_node {
     struct st_node* next;
 };
 struct st_queue {
-    mutex_t lock;
+    mutex_t* lock;
     size_t size;
     struct st_node* start;
     struct st_node* end;
 };
 
-queue_t queue_create() {
+queue_t* queue_create() {
-    queue_t q = malloc(sizeof(struct st_queue));
+    queue_t* q = malloc(sizeof(struct st_queue));
     assert(q != 0);
     q->lock = mutex_create();
     q->size = 0;
@@ -30,7 +30,7 @@ queue_t queue_create() {
     return q;
 }
 
-void queue_enqueue(queue_t q, void* item) {
+void queue_enqueue(queue_t* q, void* item) {
     struct st_node* node = malloc(sizeof(struct st_node));
     assert(node != 0);
     node->item = item;
@@ -48,7 +48,7 @@ void queue_enqueue(queue_t q, void* item) {
     mutex_unlock(q->lock);
 }
 
-void* queue_dequeue(queue_t q) {
+void* queue_dequeue(queue_t* q) {
     mutex_lock(q->lock);
     if (q->start == 0) {
         mutex_unlock(q->lock);
@@ -66,21 +66,21 @@ void* queue_dequeue(queue_t q) {
     return item;
 }
 
-void* queue_peek(queue_t q) {
+void* queue_peek(queue_t* q) {
     mutex_lock(q->lock);
     void* item = q->start ? q->start->item : 0;
     mutex_unlock(q->lock);
     return item;
 }
 
-inline size_t queue_size(queue_t q) {
+inline size_t queue_size(queue_t* q) {
     mutex_lock(q->lock);
     size_t size = q->size;
     mutex_unlock(q->lock);
     return size;
 }
 
-void queue_destroy(queue_t q) {
+void queue_destroy(queue_t* q) {
     mutex_lock(q->lock);
     struct st_node* p = q->start;
     while(p) {
@@ -89,5 +89,32 @@ void queue_destroy(queue_t q) {
         p = next;
     }
     mutex_unlock(q->lock);
+    mutex_destroy(q->lock);
     free(q);
 }
+
+void* queue_remove(queue_t* q, find_predicate predicate, void* arg) {
+    void* found = 0;
+    mutex_lock(q->lock);
+    struct st_node* p = q->start;
+    struct st_node* prev = 0;
+    while(p) {
+        if (predicate(p->item, arg) == BOOL_TRUE) {
+            found = p->item;
+            if (prev) {
+                prev->next = p->next;
+            } else {
+                q->start = p->next;
+            }
+            if (q->end == p) {
+                q->end = prev;
+            }
+            free(p);
+            break;
+        }
+        prev = p;
+        p = p->next;
+    }
+    mutex_unlock(q->lock);
+    return found;
+}

src/utils/queue.h

@@ -5,13 +5,18 @@
 #ifndef ESC_QUEUE_H
 #define ESC_QUEUE_H
 
-typedef struct st_queue* queue_t;
+#include "bool.h"
 
-queue_t queue_create();
+typedef struct st_queue queue_t;
-void queue_enqueue(queue_t q, void* item);
+
-void* queue_dequeue(queue_t q);
+queue_t* queue_create();
-void* queue_peek(queue_t q);
+void queue_destroy(queue_t* q);
-size_t queue_size(queue_t q);
+void queue_enqueue(queue_t* q, void* item);
-void queue_destroy(queue_t q);
+void* queue_dequeue(queue_t* q);
+void* queue_peek(queue_t* q);
+size_t queue_size(queue_t* q);
+
+typedef bool_t (*find_predicate)(void* item, void* arg);
+void* queue_remove(queue_t* q, find_predicate, void* arg);
 
 #endif //ESC_QUEUE_H

src/utils/socket.c

@@ -17,9 +17,9 @@ struct st_socket {
     int last_error;
 };
 
-socket_t socket_create(int type) {
+socket_t* socket_create(int type) {
     if (type == SOCKET_TYPE_TCP) {
-        socket_t s = malloc(sizeof(struct st_socket));
+        socket_t* s = malloc(sizeof(struct st_socket));
         s->af = AF_INET;
         s->type = SOCK_STREAM;
         s->proto = IPPROTO_TCP;
@@ -32,7 +32,7 @@ socket_t socket_create(int type) {
     return NULL;
 }
 
-int socket_close(socket_t s) {
+int socket_close(socket_t* s) {
     int rc = closesocket(s->s);
     if (rc != 0) {
         s->last_error = WSAGetLastError();
@@ -40,7 +40,7 @@ int socket_close(socket_t s) {
     return rc;
 }
 
-int socket_connect(socket_t s, char* addr, unsigned short port) {
+int socket_connect(socket_t* s, char* addr, unsigned short port) {
     char port_s[6];
     ADDRINFO hints;
     memset(&hints, 0, sizeof(ADDRINFO));
@@ -60,7 +60,7 @@ int socket_connect(socket_t s, char* addr, unsigned short port) {
     return 0;
 }
 
-ssize_t socket_send(socket_t s, char* data, size_t len) {
+ssize_t socket_send(socket_t* s, char* data, size_t len) {
     ssize_t rc = send(s->s, data, (int)len, 0);
     if (rc < 0) {
         s->last_error = WSAGetLastError();
@@ -68,7 +68,7 @@ ssize_t socket_send(socket_t s, char* data, size_t len) {
     return rc;
 }
 
-ssize_t socket_recv(socket_t s, char* buf, size_t len) {
+ssize_t socket_recv(socket_t* s, char* buf, size_t len) {
     ssize_t rc = recv(s->s, buf, (int)len, 0);
     if (rc < 0) {
         s->last_error = WSAGetLastError();
@@ -76,7 +76,7 @@ ssize_t socket_recv(socket_t s, char* buf, size_t len) {
     return rc;
 }
 
-int socket_readable(socket_t s) {
+int socket_readable(socket_t* s) {
 	fd_set readable;
     FD_ZERO(&readable);
 	FD_SET(s->s, &readable);
@@ -89,7 +89,7 @@ int socket_readable(socket_t s) {
     return rc;
 }
 
-int socket_writable(socket_t s) {
+int socket_writable(socket_t* s) {
     fd_set writable;
     FD_ZERO(&writable);
     FD_SET(s->s, &writable);
@@ -102,7 +102,7 @@ int socket_writable(socket_t s) {
     return rc;
 }
 
-int socket_error(socket_t s) {
+int socket_error(socket_t* s) {
     return s->last_error;
 }
 #endif
@@ -122,9 +122,9 @@ struct st_socket {
     int last_error;
 };
 
-socket_t socket_create(int type) {
+socket_t* socket_create(int type) {
     if (type == SOCKET_TYPE_TCP) {
-        socket_t s = malloc(sizeof(struct st_socket));
+        socket_t* s = malloc(sizeof(struct st_socket));
         s->af = AF_INET;
         s->type = SOCK_STREAM;
         s->proto = IPPROTO_TCP;
@@ -137,12 +137,12 @@ socket_t socket_create(int type) {
     return NULL;
 }
 
-inline void socket_destroy(socket_t s) {
+inline void socket_destroy(socket_t* s) {
     socket_close(s);
     free(s);
 }
 
-int socket_close(socket_t s) {
+int socket_close(socket_t* s) {
     if (close(s->s) == -1) {
         s->last_error = errno;
         return -1;
@@ -150,7 +150,7 @@ int socket_close(socket_t s) {
     return 0;
 }
 
-int socket_connect(socket_t s, char* addr, unsigned short port) {
+int socket_connect(socket_t* s, char* addr, unsigned short port) {
     struct addrinfo hints;
     memset(&hints, 0, sizeof(struct addrinfo));
     hints.ai_family = s->af;
@@ -161,17 +161,20 @@ int socket_connect(socket_t s, char* addr, unsigned short port) {
     snprintf(port_s, 6, "%d", port);
     int rc;
     if ((rc = getaddrinfo(addr, port_s, &hints, &result)) != 0) {
+        if (result) freeaddrinfo(result);
         s->last_error = rc;
         return -1;
     }
     if (connect(s->s, result->ai_addr, (int)result->ai_addrlen) != 0) {
+        freeaddrinfo(result);
         s->last_error = errno;
         return -1;
     }
+    freeaddrinfo(result);
     return 0;
 }
 
-ssize_t socket_send(socket_t s, char* data, size_t len) {
+ssize_t socket_send(socket_t* s, char* data, size_t len) {
     ssize_t rc = send(s->s, data, len, 0);
     if (rc < 0) {
         s->last_error = errno;
@@ -179,7 +182,7 @@ ssize_t socket_send(socket_t s, char* data, size_t len) {
     return rc;
 }
 
-ssize_t socket_recv(socket_t s, char* buf, size_t len) {
+ssize_t socket_recv(socket_t* s, char* buf, size_t len) {
     ssize_t rc = recv(s->s, buf, len, 0);
     if (rc < 0) {
         s->last_error = errno;
@@ -187,7 +190,7 @@ ssize_t socket_recv(socket_t s, char* buf, size_t len) {
     return rc;
 }
 
-int socket_writable(socket_t s) {
+int socket_writable(socket_t* s) {
     fd_set writable;
     FD_ZERO(&writable);
     FD_SET(s->s, &writable);
@@ -200,7 +203,7 @@ int socket_writable(socket_t s) {
     return rc;
 }
 
-int socket_readable(socket_t s) {
+int socket_readable(socket_t* s) {
     fd_set readable;
     FD_ZERO(&readable);
     FD_SET(s->s, &readable);
@@ -213,7 +216,7 @@ int socket_readable(socket_t s) {
     return rc;
 }
 
-inline int socket_error(socket_t s) {
+inline int socket_error(socket_t* s) {
     return s->last_error;
 }
 #endif

src/utils/socket.h

@@ -6,21 +6,21 @@
 #define ESC_SOCKET_H
 
 struct st_socket;
-typedef struct st_socket* socket_t;
+typedef struct st_socket socket_t;
 
 enum {
     SOCKET_TYPE_TCP = 1,
     SOCKET_TYPE_UDP = 2
 };
 
-socket_t socket_create(int type);
+socket_t* socket_create(int type);
-void socket_destroy(socket_t s);
+void socket_destroy(socket_t* s);
-int socket_close(socket_t s);
+int socket_close(socket_t* s);
-int socket_connect(socket_t s, char* addr, unsigned short port);
+int socket_connect(socket_t* s, char* addr, unsigned short port);
-ssize_t socket_send(socket_t s, char* data, size_t len);
+ssize_t socket_send(socket_t* s, char* data, size_t len);
-ssize_t socket_recv(socket_t s, char* buf, size_t len);
+ssize_t socket_recv(socket_t* s, char* buf, size_t len);
-int socket_writable(socket_t s);
+int socket_writable(socket_t* s);
-int socket_readable(socket_t s);
+int socket_readable(socket_t* s);
-int socket_error(socket_t s);
+int socket_error(socket_t* s);
 
 #endif //ESC_SOCKET_H

src/utils/thread.c

@@ -17,8 +17,8 @@ struct st_thread {
     int     last_error;
 };
 
-thread_t thread_create(thread_start_t thread_start, thread_arg_t thread_arg) {
+thread_t* thread_create(thread_start_t thread_start, thread_arg_t thread_arg) {
-    thread_t thread = malloc(sizeof(struct st_thread));
+    thread_t* thread = malloc(sizeof(struct st_thread));
     thread->handle = 0;
     thread->start = thread_start;
     thread->arg = thread_arg;
@@ -26,7 +26,7 @@ thread_t thread_create(thread_start_t thread_start, thread_arg_t thread_arg) {
     return thread;
 }
 
-int thread_start(thread_t thread) {
+int thread_start(thread_t* thread) {
     thread->handle = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)thread->start, thread->arg, 0, &thread->id);
     if (thread->handle == NULL) {
         DWORD rc = GetLastError();
@@ -36,7 +36,7 @@ int thread_start(thread_t thread) {
     return 0;
 }
 
-int thread_wait(thread_t thread) {
+int thread_wait(thread_t* thread) {
     if (WaitForSingleObject(thread->handle, INFINITE) == WAIT_FAILED) {
         DWORD rc = GetLastError();
         thread->last_error = (int)rc;
@@ -45,13 +45,13 @@ int thread_wait(thread_t thread) {
     return 0;
 }
 
-int thread_destroy(thread_t thread) {
+int thread_destroy(thread_t* thread) {
     if (thread_wait(thread) != 0) SuspendThread(thread->handle);
     CloseHandle(thread->handle);
     free(thread);
 }
 
-int thread_error(thread_t thread) {
+int thread_error(thread_t* thread) {
     return thread->last_error;
 }
 
@@ -68,8 +68,8 @@ struct st_thread {
     int joined;
 };
 
-thread_t thread_create(thread_start_t thread_start, thread_arg_t thread_arg) {
+thread_t* thread_create(thread_start_t thread_start, thread_arg_t thread_arg) {
-    thread_t thread = malloc(sizeof(struct st_thread));
+    thread_t* thread = malloc(sizeof(struct st_thread));
     thread->handle = 0;
     thread->start = thread_start;
     thread->arg = thread_arg;
@@ -79,7 +79,7 @@ thread_t thread_create(thread_start_t thread_start, thread_arg_t thread_arg) {
     return thread;
 }
 
-int thread_start(thread_t thread) {
+int thread_start(thread_t* thread) {
     int rc = pthread_create(&thread->handle, NULL, thread->start, thread->arg);
     if (rc != 0) {
         thread->last_error = rc;
@@ -88,7 +88,7 @@ int thread_start(thread_t thread) {
     return 0;
 }
 
-int thread_wait(thread_t thread) {
+int thread_wait(thread_t* thread) {
     if (thread->joined) {
         return 0;
     }
@@ -102,7 +102,7 @@ int thread_wait(thread_t thread) {
     return 0;
 }
 
-int thread_destroy(thread_t thread) {
+int thread_destroy(thread_t* thread) {
     if (thread_wait(thread)) {
         int rc = pthread_cancel(thread->handle);
         if (rc != 0) {
@@ -114,11 +114,11 @@ int thread_destroy(thread_t thread) {
     return 0;
 }
 
-inline int thread_error(thread_t thread) {
+inline int thread_error(thread_t* thread) {
     return thread->last_error;
 }
 
-inline int thread_result(thread_t thread, void** result) {
+inline int thread_result(thread_t* thread, void** result) {
     if (thread_wait(thread)) {
         return -1;
     }

src/utils/thread.h

@@ -7,13 +7,13 @@
 
 typedef void* (*thread_start_t)(void*);
 typedef void* thread_arg_t;
-typedef struct st_thread* thread_t;
+typedef struct st_thread thread_t;
 
-thread_t thread_create(thread_start_t thread_start, thread_arg_t thread_arg);
+thread_t* thread_create(thread_start_t thread_start, thread_arg_t thread_arg);
-int thread_start(thread_t thread);
+int thread_start(thread_t* thread);
-int thread_wait(thread_t thread);
+int thread_wait(thread_t* thread);
-int thread_destroy(thread_t thread);
+int thread_destroy(thread_t* thread);
-int thread_error(thread_t thread);
+int thread_error(thread_t* thread);
-int thread_result(thread_t thread, void** result);
+int thread_result(thread_t* thread, void** result);
 
 #endif //ESC_THREAD_H

src/utils/uuid.c

@@ -18,39 +18,39 @@ struct st_uuid {
 };
 
 //TODO: fixme - this is not secure, use crypto random bytes instead of rand
-esc_uuid_t esc_uuid_create() {
+uuid_t* uuid_create() {
     if (srand_called == 0) {
         srand(time(NULL));
         srand_called = 1;
     }
-    esc_uuid_t result = malloc(sizeof(struct st_uuid));
+    uuid_t* result = malloc(sizeof(struct st_uuid));
     for(int i=0;i<UUID_SIZE;i++)
         result->data[i] = (uint8_t)(rand() & 0xff);
     return result;
 }
 
-inline void esc_uuid_destroy(esc_uuid_t uuid) {
+inline void uuid_destroy(uuid_t* uuid) {
     free(uuid);
 }
 
-esc_uuid_t esc_uuid_from(const uint8_t* src, size_t size) {
+uuid_t* uuid_from(const uint8_t *src, size_t size) {
     if (size < UUID_SIZE) {
         return 0;
     }
-    esc_uuid_t uuid = malloc(sizeof(struct st_uuid));
+    uuid_t* uuid = malloc(sizeof(struct st_uuid));
     memcpy(uuid->data, src, UUID_SIZE);
     return uuid;
 }
 
-esc_uuid_t esc_uuid_copy(esc_uuid_t other) {
+uuid_t* uuid_copy(uuid_t* other) {
-    return esc_uuid_from((uint8_t*)other->data, UUID_SIZE);
+    return uuid_from((uint8_t *) other->data, UUID_SIZE);
 }
 
-int esc_uuid_compare(esc_uuid_t left, esc_uuid_t right) {
+int uuid_compare(uuid_t* left, uuid_t* right) {
     return memcmp(left->data, right->data, UUID_SIZE);
 }
 
-const char* esc_uuid_format(esc_uuid_t uuid, char* buffer, size_t buf_size) {
+const char* uuid_format(uuid_t* uuid, char *buffer, size_t buf_size) {
 #ifdef _WIN32
     snprintf(buffer, buf_size, "%08lx-%04hx-%04hx-%04hx-%08lx%04hx",
              *(long*)&uuid->data[0],

src/utils/uuid.h

@@ -5,15 +5,16 @@
 #ifndef ESC_UUID_H
 #define ESC_UUID_H
 
-#include <stdint.h>
+#include <stdint.h> //uint8_t
+#include <stddef.h> //size_t
 
-typedef struct st_uuid* esc_uuid_t;
+typedef struct st_uuid uuid_t;
 
-esc_uuid_t esc_uuid_create();
+uuid_t* uuid_create();
-void esc_uuid_destroy(esc_uuid_t uuid);
+void uuid_destroy(uuid_t* uuid);
-esc_uuid_t esc_uuid_from(const uint8_t* src, size_t size);
+uuid_t* uuid_from(const uint8_t *src, size_t size);
-esc_uuid_t esc_uuid_copy(esc_uuid_t other);
+uuid_t* uuid_copy(uuid_t* other);
-int esc_uuid_compare(esc_uuid_t left, esc_uuid_t right);
+int uuid_compare(uuid_t* left, uuid_t* right);
-const char* esc_uuid_format(esc_uuid_t uuid, char* buffer, size_t len);
+const char* uuid_format(uuid_t* uuid, char *buffer, size_t len);
 
 #endif //ESC_UUID_H

test/main.c

@@ -0,0 +1,89 @@
+#include <stdio.h>
+#include "../src/utils/debug.h"
+#include "../include/esc.h"
+
+#ifdef _WIN32
+#include <winsock.h>
+#include <windows.h>
+#define usleep Sleep
+#define sleep(x) Sleep(x*1000)
+#endif
+#ifdef __linux__
+#include <unistd.h>
+#endif
+
+int main() {
+#ifdef _WIN32
+    WSADATA wsaData;
+    WSAStartup(MAKEWORD(2,0), &wsaData);
+#endif
+
+    esc_connection_t* conn = esc_connection_create(esc_default_connection_settings, "tcp://127.0.0.1:1113", NULL);
+    if (esc_connection_connect(conn) != 0) {
+        error_t* err = esc_connection_last_error(conn);
+        fprintf(stderr, "Error: %s code=%d file=%s line=%d\n", err->message, err->code, err->file, err->line);
+        return -2;
+    }
+
+    uuid_t *event_id = uuid_create();
+    buffer_t *data = buffer_from_string("{\"a\":\"1\"}");
+    esc_event_data_t* event_data = esc_event_data_create(event_id, "test_event", BOOL_TRUE, data, 0);
+    array_t* events = array_create(1, event_data);
+    esc_write_result_t* write_result = esc_append_to_stream(conn, "test-123", ESC_VERSION_ANY, events);
+    if (write_result == 0) {
+        error_t* err = esc_connection_last_error(conn);
+        fprintf(stderr, "Error: %s code=%d file=%s line=%d\n", err->message, err->code, err->file, err->line);
+        return -3;
+    }
+    esc_write_result_destroy(write_result);
+    array_destroy(events, (array_deallocator)esc_event_data_destroy);
+    uuid_destroy(event_id);
+    buffer_destroy(data);
+
+    esc_credentials_t* credentials = esc_credentials_create("admin", "changeit");
+
+    esc_all_events_slice_t* result = 0;
+    do {
+        esc_all_events_slice_t* old_result = result;
+        result = esc_connection_read_all_forward(conn, old_result ? old_result->next_position : NULL, 100, credentials);
+        if (old_result) esc_all_events_slice_destroy(old_result);
+        if (result == 0) {
+            error_t* err = esc_connection_last_error(conn);
+            fprintf(stderr, "Error: %s code=%d file=%s line=%d\n", err->message, err->code, err->file, err->line);
+            break;
+        }
+        char posbuf1[44];
+        char posbuf2[44];
+        printf("%s %s %s %u\n", result->read_direction,
+               esc_position_format(result->from_position, posbuf1, 44),
+               esc_position_format(result->next_position, posbuf2, 44),
+               result->is_end_of_stream);
+        char uuid_buf[37];
+        for (size_t i = 0; i < result->n_events; i++) {
+#ifdef _WIN32
+            printf("%s %s %lld@%s %llu %llu\n", esc_uuid_format(result->events[i]->event->event_id, uuid_buf, 37),
+#else
+            printf("%s %s %ld@%s %lu %lu\n", uuid_format(result->events[i]->event->event_id, uuid_buf, 37),
+#endif
+                   result->events[i]->event->event_type,
+                   result->events[i]->event->event_number,
+                   result->events[i]->event->event_stream_id,
+                   buffer_size(result->events[i]->event->data),
+                   buffer_size(result->events[i]->event->metadata));
+        }
+    } while(result->is_end_of_stream == 0);
+
+    if (result) esc_all_events_slice_destroy(result);
+	
+	sleep(5);
+
+    esc_connection_destroy(conn);
+    esc_credentials_destroy(credentials);
+
+    dbg_list_allocs();
+
+#ifdef _WIN32
+    WSACleanup();
+#endif
+    return 0;
+}