From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Fri, 14 Dec 2018 21:04:44 +0000 (-0500)
Subject: Transmit sessiond uuid to consumerd on launch
X-Git-Tag: v2.12.0-rc1~564
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=09ede842515f606976233d5cc538fc47a60abc09;p=lttng-tools.git

Transmit sessiond uuid to consumerd on launch

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/src/bin/lttng-sessiond/consumer.h b/src/bin/lttng-sessiond/consumer.h
index 7277c405e..caa076c89 100644
--- a/src/bin/lttng-sessiond/consumer.h
+++ b/src/bin/lttng-sessiond/consumer.h
@@ -314,5 +314,7 @@ int consumer_check_rotation_pending_relay(struct consumer_socket *socket,
 int consumer_mkdir(struct consumer_socket *socket, uint64_t session_id,
 		const struct consumer_output *output, const char *path,
 		uid_t uid, gid_t gid);
+int consumer_init(struct consumer_socket *socket,
+		const lttng_uuid sessiond_uuid);
 
 #endif /* _CONSUMER_H */
diff --git a/src/bin/lttng-sessiond/manage-consumer.c b/src/bin/lttng-sessiond/manage-consumer.c
index fa802adc9..c87a43f6e 100644
--- a/src/bin/lttng-sessiond/manage-consumer.c
+++ b/src/bin/lttng-sessiond/manage-consumer.c
@@ -242,8 +242,8 @@ void *thread_consumer_management(void *data)
 	health_code_update();
 
 	/*
-	 * Transfer the write-end of the channel monitoring and rotate pipe
-	 * to the consumer by issuing a SET_CHANNEL_MONITOR_PIPE command.
+	 * Transfer the write-end of the channel monitoring pipe to the consumer
+	 * by issuing a SET_CHANNEL_MONITOR_PIPE command.
 	 */
 	cmd_socket_wrapper = consumer_allocate_socket(&consumer_data->cmd_sock);
 	if (!cmd_socket_wrapper) {
@@ -252,6 +252,16 @@ void *thread_consumer_management(void *data)
 	}
 	cmd_socket_wrapper->lock = &consumer_data->lock;
 
+	pthread_mutex_lock(cmd_socket_wrapper->lock);
+	ret = consumer_init(cmd_socket_wrapper, sessiond_uuid);
+	if (ret) {
+		ERR("Failed to send sessiond uuid to consumer daemon");
+		mark_thread_intialization_as_failed(notifiers);
+		pthread_mutex_unlock(cmd_socket_wrapper->lock);
+		goto error;
+	}
+	pthread_mutex_unlock(cmd_socket_wrapper->lock);
+
 	ret = consumer_send_channel_monitor_pipe(cmd_socket_wrapper,
 			consumer_data->channel_monitor_pipe);
 	if (ret) {
diff --git a/src/common/consumer/consumer.c b/src/common/consumer/consumer.c
index 32a2d7a4a..3c20c57bd 100644
--- a/src/common/consumer/consumer.c
+++ b/src/common/consumer/consumer.c
@@ -4491,6 +4491,7 @@ enum lttcomm_return_code lttng_consumer_init_command(
 		const lttng_uuid sessiond_uuid)
 {
 	enum lttcomm_return_code ret;
+	char uuid_str[UUID_STR_LEN];
 
 	if (ctx->sessiond_uuid.is_set) {
 		ret = LTTCOMM_CONSUMERD_ALREADY_SET;
@@ -4500,6 +4501,8 @@ enum lttcomm_return_code lttng_consumer_init_command(
 	ctx->sessiond_uuid.is_set = true;
 	memcpy(ctx->sessiond_uuid.value, sessiond_uuid, sizeof(lttng_uuid));
 	ret = LTTCOMM_CONSUMERD_SUCCESS;
+	lttng_uuid_to_str(sessiond_uuid, uuid_str);
+	DBG("Received session daemon UUID: %s", uuid_str);
 end:
 	return ret;
 }