wip

src/esc.c

@@ -28,17 +28,17 @@ typedef int bool_t;
 const bool_t BOOL_TRUE = 1;
 const bool_t BOOL_FALSE = 0;
 
-#define ERROR_BUFFER_SIZE 4096
+const esc_error_t _error_create(const char* file, int line, int code, char* format, ...) {
-esc_error_t error_create(int code, char* format, ...) {
     va_list vl;
     va_start(vl, format);
-    char buf[ERROR_BUFFER_SIZE];
+    esc_error_t err;
-    size_t size = (size_t)snprintf(buf, ERROR_BUFFER_SIZE, format, vl);
+    err.file = file;
-    char* msg = malloc(size+1);
+    err.line = line;
-    strcpy(msg, buf);
+    err.code = code;
-    esc_error_t res = {code, msg};
+    vsnprintf(err.message, ERROR_MSG_SIZE, format, vl);
-    return res;
+    return err;
 }
+#define error_create(code, fmt, args...) _error_create(__FILE__, __LINE__, code, fmt, args)
 
 struct st_connection_settings {
     bool_t use_ssl_connection;
@@ -75,6 +75,8 @@ struct st_connection {
     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 {
@@ -183,25 +185,8 @@ void protobuf_c_free(void *alloc_data, void* p) {
 }
 
 esc_connection_t esc_connection_create(const esc_connection_settings_t* connection_settings, const char* addr, const char* connection_name) {
-    if (strncmp(addr, "tcp://", 6) != 0) {
-        return 0;
-    }
-    char* pos = strrchr(addr, ':');
-    if (pos == 0) {
-        return 0;
-    }
-    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
-    };
     struct st_connection* conn = malloc(sizeof(struct st_connection));
     conn->settings = *connection_settings;
-    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;
     conn->protobuf_c_allocator.alloc = protobuf_c_alloc;
     conn->protobuf_c_allocator.free = protobuf_c_free;
     conn->protobuf_c_allocator.allocator_data = 0;
@@ -218,6 +203,33 @@ esc_connection_t esc_connection_create(const esc_connection_settings_t* connecti
     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;
 }
 
@@ -226,20 +238,28 @@ void* connection_thread(void* arg) {
 
     while(conn->stop == BOOL_FALSE) {
         if (socket_writable(conn->tcp_conn)) {
+            printf("T1");
             tcp_package_t send_pkg = queue_dequeue(conn->send_queue);
+            printf("T1(%p)", send_pkg);
             if (send_pkg && connection_send_tcp_package(conn, send_pkg)) {
                 fprintf(stderr, "failed to send pkg.");
             }
+            printf("T2");
         }
 
         if (socket_readable(conn->tcp_conn)) {
+            printf("T3");
             tcp_package_t recv_pkg = connection_recv_tcp_package(conn);
+            printf("T4");
             if (recv_pkg && recv_pkg->command == MESSAGE_HEARTBEATREQUEST) {
                 tcp_package_t heartbeat_pkg = tcp_package_create(MESSAGE_HEARTBEATRESPONSE, recv_pkg->correlation_id, buffer_create(0));
+                printf("T5");
                 queue_enqueue(conn->send_queue, heartbeat_pkg);
             } else if (recv_pkg) {
+                printf("T6");
                 queue_enqueue(conn->recv_queue, recv_pkg);
             }
+            printf("T7");
         }
 
         usleep(1);
@@ -258,12 +278,14 @@ int esc_connection_connect(esc_connection_t conn) {
     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) {
-        return -2;
+        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)) {
-        return -3;
+        conn->last_error = error_create(thread_error(conn->manager_thread), "can't start manager thread.", "");
+        return -1;
     }
 	// Identify
     // build message
@@ -280,7 +302,8 @@ int esc_connection_connect(esc_connection_t conn) {
 
     tcp_package_t recv_pkg = connection_wait_for(conn, send_pkg->correlation_id);
     if (recv_pkg->command != MESSAGE_CLIENTIDENTIFIED) {
-        return -5;
+        conn->last_error = error_create(0, "server error: %d.", recv_pkg->command);
+        return -1;
     }
 	
 	return 0;
@@ -288,8 +311,8 @@ int esc_connection_connect(esc_connection_t conn) {
 
 esc_credentials_t esc_credentials_create(const char* username, const char* password) {
     esc_credentials_t creds = malloc(sizeof(struct st_credentials));
-    creds->username = username;
+    creds->username = string_copy(username);
-    creds->password = password;
+    creds->password = string_copy(password);
     return creds;
 }
 
@@ -317,6 +340,7 @@ esc_resolved_event_t* resolved_event_create(EventStore__Client__Messages__Resolv
 }
 
 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;
@@ -327,14 +351,23 @@ esc_all_events_slice_t esc_connection_read_all_forward(esc_connection_t conn, co
     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);
-    tcp_package_t send_pkg = tcp_package_create_authenticated(0xB6, esc_uuid_create(), buffer_from(buffer, s), credentials->username, credentials->password);
+    printf("A %s\n", credentials->password);
+    tcp_package_t send_pkg = tcp_package_create_authenticated(MESSAGE_READALLEVENTSFORWARD, esc_uuid_create(), buffer_from(buffer, s), credentials->username, credentials->password);
+    printf("A1 %s %s\n", credentials->password, send_pkg->password);
     queue_enqueue(conn->send_queue, send_pkg);
+    printf("A2 %s %s\n", credentials->password, send_pkg->password);
+
+    printf("B %s\n", credentials->password);
 
     tcp_package_t recv_pkg = connection_wait_for(conn, send_pkg->correlation_id);
-    if (recv_pkg->command != 0xB7) {
+    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;
     }
 
+    printf("C %s\n", credentials->password);
+
+    //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);
 
@@ -355,6 +388,8 @@ esc_all_events_slice_t esc_connection_read_all_forward(esc_connection_t conn, co
     }
     event_store__client__messages__read_all_events_completed__free_unpacked(recv_msg, &conn->protobuf_c_allocator);
 
+    printf("D %s\n", credentials->password);
+
     return result;
 }
 
@@ -362,6 +397,10 @@ void esc_connection_close(esc_connection_t conn) {
     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);

src/esc.h

@@ -8,9 +8,12 @@
 #include "utils/uuid.h"
 #include "utils/buffer.h"
 
+#define ERROR_MSG_SIZE 1024
 struct st_error {
-    const int code;
+    const char* file;
-    const char* message;
+    int line;
+    int code;
+    char message[ERROR_MSG_SIZE];
 };
 typedef struct st_error esc_error_t;
 
@@ -69,6 +72,8 @@ esc_credentials_t esc_credentials_create(const char* username, const char* passw
 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);
 

src/main.c

@@ -17,10 +17,9 @@ int main() {
 #endif
 
     esc_connection_t conn = esc_connection_create(esc_default_connection_settings, "tcp://127.0.0.1:1113", NULL);
-    if (conn == 0) {
-        return -1;
-    }
     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");
@@ -29,6 +28,8 @@ int main() {
     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];

src/tcp_package.c

@@ -7,6 +7,7 @@
 #include <string.h>
 #include <stdio.h>
 #include "tcp_package.h"
+#include "utils/string.h"
 
 const uint32_t CommandOffset = 0;
 const uint32_t FlagsOffset = 1;
@@ -30,13 +31,15 @@ tcp_package_t tcp_package_create_authenticated(uint8_t command, esc_uuid_t corre
     pkg->command = command;
     pkg->flags = 1;
     pkg->correlation_id = esc_uuid_copy(correlation_id);
-    pkg->login = username;
+    pkg->login = string_copy(username);
-    pkg->password = password;
+    pkg->password = string_copy(password);
     pkg->data = data;
     return pkg;
 }
 
 void tcp_package_destroy(tcp_package_t pkg) {
+    free((void*)pkg->login);
+    free((void*)pkg->password);
     esc_uuid_destroy(pkg->correlation_id);
     buffer_destroy(pkg->data);
     free(pkg);

src/utils/mutex.c

@@ -10,22 +10,27 @@
 #include "mutex.h"
 
 #ifdef _WIN32
+#include <windows.h>
+struct st_mutex {
+    CRITICAL_SECTION handle;
+};
+
 mutex_t mutex_create() {
-    mutex_t mutex = malloc(sizeof(CRITICAL_SECTION));
+    mutex_t mutex = malloc(sizeof(struct st_mutex));
-    InitializeCriticalSection(mutex);
+    InitializeCriticalSection(&mutex->handle);
     return mutex;
 }
 
 void mutex_lock(mutex_t mutex) {
-    EnterCriticalSection(mutex);
+    EnterCriticalSection(&mutex->handle);
 }
 
 void mutex_unlock(mutex_t mutex) {
-    LeaveCriticalSection(mutex);
+    LeaveCriticalSection(&mutex->handle);
 }
 
 void mutex_destroy(mutex_t mutex) {
-    DeleteCriticalSection(mutex);
+    DeleteCriticalSection(&mutex->handle);
 }
 #endif
 #ifdef __linux__