static void mod_amqp_command_response(mod_amqp_command_profile_t *profile, char *command, switch_stream_handle_t stream,
char *fs_resp_exchange, char *fs_resp_key, switch_status_t status)
{
char *json_output = NULL;
amqp_basic_properties_t props;
cJSON *message = NULL;
if (! profile->conn_active) {
/* No connection, so we can not send the message. */
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Profile[%s] not active\n", profile->name);
return;
}
/* Construct the api response */
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Preparing api command response: [%s]\n", (char *)stream.data);
message = cJSON_CreateObject();
cJSON_AddItemToObject(message, "output", cJSON_CreateString((const char *) stream.data));
cJSON_AddItemToObject(message, "command", cJSON_CreateString(command));
cJSON_AddItemToObject(message, "status", cJSON_CreateNumber((double) status));
json_output = cJSON_Print(message);
cJSON_Delete(message);
memset(&props, 0, sizeof(amqp_basic_properties_t));
props._flags = AMQP_BASIC_CONTENT_TYPE_FLAG;
props.content_type = amqp_cstring_bytes("text/json");
status = amqp_basic_publish(
profile->conn_active->state,
1,
amqp_cstring_bytes(fs_resp_exchange),
amqp_cstring_bytes(fs_resp_key),
0,
0,
&props,
amqp_cstring_bytes(json_output));
switch_safe_free(json_output);
if (status < 0) {
const char *errstr = amqp_error_string2(-status);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Profile[%s] failed to send event on connection[%s]: %s\n",
profile->name, profile->conn_active->name, errstr);
/* This is bad, we couldn't send the message. Clear up any connection */
mod_amqp_connection_close(profile->conn_active);
profile->conn_active = NULL;
return;
}
return;
}
/* This should only be called in a single threaded context from the logging profile send thread */
switch_status_t mod_amqp_logging_send(mod_amqp_logging_profile_t *profile, mod_amqp_message_t *msg)
{
amqp_basic_properties_t props;
int status;
if (! profile->conn_active) {
/* No connection, so we can not send the message. */
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Profile[%s] not active\n", profile->name);
return SWITCH_STATUS_NOT_INITALIZED;
}
memset(&props, 0, sizeof(amqp_basic_properties_t));
props._flags = AMQP_BASIC_CONTENT_TYPE_FLAG;
props.content_type = amqp_cstring_bytes("application/json");
status = amqp_basic_publish(
profile->conn_active->state,
1,
amqp_cstring_bytes(profile->exchange),
amqp_cstring_bytes(msg->routing_key),
0,
0,
&props,
amqp_cstring_bytes(msg->pjson));
if (status < 0) {
const char *errstr = amqp_error_string2(-status);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Profile[%s] failed to send event on connection[%s]: %s\n",
profile->name, profile->conn_active->name, errstr);
/* This is bad, we couldn't send the message. Clear up any connection */
mod_amqp_connection_close(profile->conn_active);
profile->conn_active = NULL;
return SWITCH_STATUS_SOCKERR;
}
return SWITCH_STATUS_SUCCESS;
}
void * SWITCH_THREAD_FUNC mod_amqp_command_thread(switch_thread_t *thread, void *data)
{
mod_amqp_command_profile_t *profile = (mod_amqp_command_profile_t *) data;
while (profile->running) {
amqp_queue_declare_ok_t *recv_queue;
amqp_bytes_t queueName = { 0, NULL };
/* Ensure we have an AMQP connection */
if (!profile->conn_active) {
switch_status_t status;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Amqp no connection- reconnecting...\n");
status = mod_amqp_connection_open(profile->conn_root, &(profile->conn_active), profile->name, profile->custom_attr);
if ( status != SWITCH_STATUS_SUCCESS ) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Profile[%s] failed to connect with code(%d), sleeping for %dms\n",
profile->name, status, profile->reconnect_interval_ms);
switch_sleep(profile->reconnect_interval_ms * 1000);
continue;
}
/* Check if exchange already exists */
amqp_exchange_declare(profile->conn_active->state, 1,
amqp_cstring_bytes(profile->exchange),
amqp_cstring_bytes("topic"),
0, /* passive */
1, /* durable */
amqp_empty_table);
if (mod_amqp_log_if_amqp_error(amqp_get_rpc_reply(profile->conn_active->state), "Checking for command exchange")) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Profile[%s] failed to create missing command exchange", profile->name);
continue;
}
/* Ensure we have a queue */
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Creating command queue");
recv_queue = amqp_queue_declare(profile->conn_active->state, // state
1, // channel
profile->queue ? amqp_cstring_bytes(profile->queue) : amqp_empty_bytes, // queue name
0, 0, // passive, durable
0, 1, // exclusive, auto-delete
amqp_empty_table); // args
if (mod_amqp_log_if_amqp_error(amqp_get_rpc_reply(profile->conn_active->state), "Declaring queue")) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Profile[%s] failed to connect with code(%d), sleeping for %dms\n",
profile->name, status, profile->reconnect_interval_ms);
switch_sleep(profile->reconnect_interval_ms * 1000);
continue;
}
if (queueName.bytes) {
amqp_bytes_free(queueName);
}
queueName = amqp_bytes_malloc_dup(recv_queue->queue);
if (!queueName.bytes) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Out of memory while copying queue name");
break;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Created command queue %.*s", (int)queueName.len, (char *)queueName.bytes);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Binding command queue to exchange %s", profile->exchange);
/* Bind the queue to the exchange */
amqp_queue_bind(profile->conn_active->state, // state
1, // channel
queueName, // queue
amqp_cstring_bytes(profile->exchange), // exchange
amqp_cstring_bytes(profile->binding_key), // routing key
amqp_empty_table); // args
if (mod_amqp_log_if_amqp_error(amqp_get_rpc_reply(profile->conn_active->state), "Binding queue")) {
mod_amqp_connection_close(profile->conn_active);
profile->conn_active = NULL;
switch_sleep(profile->reconnect_interval_ms * 1000);
continue;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Amqp reconnect successful- connected\n");
continue;
}
// Start a command
amqp_basic_consume(profile->conn_active->state, // state
1, // channel
queueName, // queue
amqp_empty_bytes, // command tag
0, 1, 0, // no_local, no_ack, exclusive
amqp_empty_table); // args
if (mod_amqp_log_if_amqp_error(amqp_get_rpc_reply(profile->conn_active->state), "Creating a command")) {
mod_amqp_connection_close(profile->conn_active);
profile->conn_active = NULL;
switch_sleep(profile->reconnect_interval_ms * 1000);
continue;
}
while (profile->running && profile->conn_active) {
amqp_rpc_reply_t res;
amqp_envelope_t envelope;
struct timeval timeout = {0};
char command[1024];
enum ECommandFormat {
COMMAND_FORMAT_UNKNOWN,
COMMAND_FORMAT_PLAINTEXT
} commandFormat = COMMAND_FORMAT_PLAINTEXT;
char *fs_resp_exchange = NULL, *fs_resp_key = NULL;
amqp_maybe_release_buffers(profile->conn_active->state);
timeout.tv_usec = 500 * 1000;
res = amqp_consume_message(profile->conn_active->state, &envelope, &timeout, 0);
if (res.reply_type == AMQP_RESPONSE_LIBRARY_EXCEPTION) {
if (res.library_error == AMQP_STATUS_UNEXPECTED_STATE) {
/* Unexpected frame. Discard it then continue */
amqp_frame_t decoded_frame;
amqp_simple_wait_frame(profile->conn_active->state, &decoded_frame);
}
if (res.library_error == AMQP_STATUS_SOCKET_ERROR) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "A socket error occurred. Tearing down and reconnecting\n");
break;
}
if (res.library_error == AMQP_STATUS_CONNECTION_CLOSED) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "AMQP connection was closed. Tearing down and reconnecting\n");
break;
}
if (res.library_error == AMQP_STATUS_TCP_ERROR) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "A TCP error occurred. Tearing down and reconnecting\n");
break;
}
if (res.library_error == AMQP_STATUS_TIMEOUT) {
// nop
}
/* Try consuming again */
continue;
}
if (res.reply_type != AMQP_RESPONSE_NORMAL) {
break;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Delivery:%u, exchange:%.*s routingkey:%.*s\n",
(unsigned) envelope.delivery_tag, (int) envelope.exchange.len, (char *) envelope.exchange.bytes,
(int) envelope.routing_key.len, (char *) envelope.routing_key.bytes);
if (envelope.message.properties._flags & AMQP_BASIC_CONTENT_TYPE_FLAG) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Content-type: %.*s\n",
(int) envelope.message.properties.content_type.len, (char *) envelope.message.properties.content_type.bytes);
if (strncasecmp("text/plain", envelope.message.properties.content_type.bytes, strlen("text/plain")) == 0) {
commandFormat = COMMAND_FORMAT_PLAINTEXT;
} else {
commandFormat = COMMAND_FORMAT_UNKNOWN;
}
}
if (envelope.message.properties.headers.num_entries) {
int x = 0;
for ( x = 0; x < envelope.message.properties.headers.num_entries; x++) {
char *header_key = (char *)envelope.message.properties.headers.entries[x].key.bytes;
char *header_value = (char *)envelope.message.properties.headers.entries[x].value.value.bytes.bytes;
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "AMQP message custom header key[%s] value[%s]\n", header_key, header_value);
if ( !strncmp(header_key, "x-fs-api-resp-exchange", 22)) {
fs_resp_exchange = header_value;
} else if (!strncmp(header_key, "x-fs-api-resp-key", 17)) {
fs_resp_key = header_value;
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Ignoring unrecognized event header [%s]\n", header_key);
}
}
}
if (commandFormat == COMMAND_FORMAT_PLAINTEXT) {
switch_stream_handle_t stream = { 0 }; /* Collects the command output */
/* Convert amqp bytes to c-string */
snprintf(command, sizeof(command), "%.*s", (int) envelope.message.body.len, (char *) envelope.message.body.bytes);
/* Execute the command */
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Executing: %s\n", command);
SWITCH_STANDARD_STREAM(stream);
if ( fs_resp_exchange && fs_resp_key ) {
switch_status_t status = switch_console_execute(command, 0, &stream);
mod_amqp_command_response(profile, command, stream, fs_resp_exchange, fs_resp_key, status);
} else {
if (switch_console_execute(command, 0, &stream) != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Remote command failed:\n%s\n", (char *) stream.data);
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Remote command succeeded:\n%s\n", (char *) stream.data);
}
}
switch_safe_free(stream.data);
}
/* Tidy up */
amqp_destroy_envelope(&envelope);
}
amqp_bytes_free(queueName);
queueName.bytes = NULL;
mod_amqp_connection_close(profile->conn_active);
profile->conn_active = NULL;
if (profile->running) {
/* We'll reconnect, but sleep to avoid hammering resources */
switch_sleep(500);
}
}
/* Terminate the thread */
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "Command listener thread stopped\n");
switch_thread_exit(thread, SWITCH_STATUS_SUCCESS);
return NULL;
}
