nicdex/eventstore-client-c
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This commit is contained in:
Nicolas Dextraze 2018-03-20 22:47:56 -07:00
parent 1ca51948c2
commit ec79155abf
5 changed files with 99 additions and 46 deletions
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103
src/esc.c
View File

@ -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
esc_error_t error_create(int code, char* format, ...) {
const esc_error_t _error_create(const char* file, int line, int code, char* format, ...) {
va_list vl;
va_start(vl, format);
char buf[ERROR_BUFFER_SIZE];
size_t size = (size_t)snprintf(buf, ERROR_BUFFER_SIZE, format, vl);
char* msg = malloc(size+1);
strcpy(msg, buf);
esc_error_t res = {code, msg};
return res;
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;
@ -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->password = password;
creds->username = string_copy(username);
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);

9
src/esc.h
View File

@ -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* message;
const char* file;
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);

7
src/main.c
View File

@ -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];

7
src/tcp_package.c
View File

@ -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->password = password;
pkg->login = string_copy(username);
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);

15
src/utils/mutex.c
View File

@ -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));
InitializeCriticalSection(mutex);
mutex_t mutex = malloc(sizeof(struct st_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__