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/*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include "wa-inc/connection.h"
#include "connection_api.h"
/* Raw connection structure */
typedef struct _connection {
/* Next connection */
struct _connection *next;
/* Handle of the connection */
uint32 handle;
/* Callback function called when event on this connection occurs */
on_connection_event_f on_event;
/* User data */
void *user_data;
} connection_t;
/* Raw connections list */
static connection_t *g_conns = NULL;
connection_t *
api_open_connection(const char *name, attr_container_t *args,
on_connection_event_f on_event, void *user_data)
{
connection_t *conn;
char *args_buffer = (char *)args;
uint32 handle, args_len = attr_container_get_serialize_length(args);
handle = wasm_open_connection(name, args_buffer, args_len);
if (handle == -1)
return NULL;
conn = (connection_t *)malloc(sizeof(*conn));
if (conn == NULL) {
wasm_close_connection(handle);
return NULL;
}
memset(conn, 0, sizeof(*conn));
conn->handle = handle;
conn->on_event = on_event;
conn->user_data = user_data;
if (g_conns != NULL) {
conn->next = g_conns;
g_conns = conn;
}
else {
g_conns = conn;
}
return conn;
}
void
api_close_connection(connection_t *c)
{
connection_t *conn = g_conns, *prev = NULL;
while (conn) {
if (conn == c) {
wasm_close_connection(c->handle);
if (prev != NULL)
prev->next = conn->next;
else
g_conns = conn->next;
free(conn);
return;
}
else {
prev = conn;
conn = conn->next;
}
}
}
int
api_send_on_connection(connection_t *conn, const char *data, uint32 len)
{
return wasm_send_on_connection(conn->handle, data, len);
}
bool
api_config_connection(connection_t *conn, attr_container_t *cfg)
{
char *cfg_buffer = (char *)cfg;
uint32 cfg_len = attr_container_get_serialize_length(cfg);
return wasm_config_connection(conn->handle, cfg_buffer, cfg_len);
}
void
on_connection_data(uint32 handle, char *buffer, uint32 len)
{
connection_t *conn = g_conns;
while (conn != NULL) {
if (conn->handle == handle) {
if (len == 0) {
conn->on_event(conn, CONN_EVENT_TYPE_DISCONNECT, NULL, 0,
conn->user_data);
}
else {
conn->on_event(conn, CONN_EVENT_TYPE_DATA, buffer, len,
conn->user_data);
}
return;
}
conn = conn->next;
}
}
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