Rename sessiond-timer.[hc] to timer.[hc]

[lttng-tools.git] / src / bin / lttng-sessiond / session.c

diff --git a/src/bin/lttng-sessiond/session.c b/src/bin/lttng-sessiond/session.c
index 2b7d65eaa1b61fbae82a230ee2a6b7247505d0ac..38dbf6128c31639b668910ede62fc4a51f19d7c0 100644 (file)
--- a/src/bin/lttng-sessiond/session.c
+++ b/src/bin/lttng-sessiond/session.c
@@ -28,9 +28,11 @@
 
 #include <common/common.h>
 #include <common/sessiond-comm/sessiond-comm.h>
+#include <lttng/location-internal.h>
 
 #include "session.h"
 #include "utils.h"
+#include "trace-ust.h"
 
 /*
  * NOTES:
@@ -133,6 +135,14 @@ void session_lock_list(void)
        pthread_mutex_lock(&ltt_session_list.lock);
 }
 
+/*
+ * Try to acquire session list lock
+ */
+int session_trylock_list(void)
+{
+       return pthread_mutex_trylock(&ltt_session_list.lock);
+}
+
 /*
  * Release session list lock
  */
@@ -141,6 +151,116 @@ void session_unlock_list(void)
        pthread_mutex_unlock(&ltt_session_list.lock);
 }
 
+/*
+ * Get the session's consumer destination type.
+ *
+ * The caller must hold the session lock.
+ */
+enum consumer_dst_type session_get_consumer_destination_type(
+               const struct ltt_session *session)
+{
+       /*
+        * The output information is duplicated in both of those session types.
+        * Hence, it doesn't matter from which it is retrieved. However, it is
+        * possible for only one of them to be set.
+        */
+       return session->kernel_session ?
+                       session->kernel_session->consumer->type :
+                       session->ust_session->consumer->type;
+}
+
+/*
+ * Get the session's consumer network hostname.
+ * The caller must ensure that the destination is of type "net".
+ *
+ * The caller must hold the session lock.
+ */
+const char *session_get_net_consumer_hostname(const struct ltt_session *session)
+{
+       const char *hostname = NULL;
+       const struct consumer_output *output;
+
+       output = session->kernel_session ?
+                       session->kernel_session->consumer :
+                       session->ust_session->consumer;
+
+       /*
+        * hostname is assumed to be the same for both control and data
+        * connections.
+        */
+       switch (output->dst.net.control.dtype) {
+       case LTTNG_DST_IPV4:
+               hostname = output->dst.net.control.dst.ipv4;
+               break;
+       case LTTNG_DST_IPV6:
+               hostname = output->dst.net.control.dst.ipv6;
+               break;
+       default:
+               abort();
+       }
+       return hostname;
+}
+
+/*
+ * Get the session's consumer network control and data ports.
+ * The caller must ensure that the destination is of type "net".
+ *
+ * The caller must hold the session lock.
+ */
+void session_get_net_consumer_ports(const struct ltt_session *session,
+               uint16_t *control_port, uint16_t *data_port)
+{
+       const struct consumer_output *output;
+
+       output = session->kernel_session ?
+                       session->kernel_session->consumer :
+                       session->ust_session->consumer;
+       *control_port = output->dst.net.control.port;
+       *data_port = output->dst.net.data.port;
+}
+
+/*
+ * Get the location of the latest trace archive produced by a rotation.
+ *
+ * The caller must hold the session lock.
+ */
+struct lttng_trace_archive_location *session_get_trace_archive_location(
+               struct ltt_session *session)
+{
+       struct lttng_trace_archive_location *location = NULL;
+
+       if (session->rotation_state != LTTNG_ROTATION_STATE_COMPLETED) {
+               goto end;
+       }
+
+       switch (session_get_consumer_destination_type(session)) {
+       case CONSUMER_DST_LOCAL:
+               location = lttng_trace_archive_location_local_create(
+                               session->rotation_chunk.current_rotate_path);
+               break;
+       case CONSUMER_DST_NET:
+       {
+               const char *hostname;
+               uint16_t control_port, data_port;
+
+               hostname = session_get_net_consumer_hostname(session);
+               session_get_net_consumer_ports(session,
+                               &control_port,
+                               &data_port);
+               location = lttng_trace_archive_location_relay_create(
+                               hostname,
+                               LTTNG_TRACE_ARCHIVE_LOCATION_RELAY_PROTOCOL_TYPE_TCP,
+                               control_port, data_port,
+                               session->rotation_chunk.current_rotate_path);
+               break;
+       }
+       default:
+               abort();
+       }
+end:
+       return location;
+}
+
 /*
  * Allocate the ltt_sessions_ht_by_id HT.
  *
@@ -400,11 +520,12 @@ int session_create(char *name, uid_t uid, gid_t gid)
                goto error;
        }
 
-       new_session->rotate_pending = false;
+       new_session->rotation_pending_local = false;
+       new_session->rotation_pending_relay = false;
        new_session->rotation_state = LTTNG_ROTATION_STATE_NO_ROTATION;
-       new_session->rotate_pending_relay = false;
-       new_session->rotate_relay_pending_timer_enabled = false;
-       new_session->rotate_timer = false;
+
+       new_session->rotation_pending_check_timer_enabled = false;
+       new_session->rotation_schedule_timer_enabled = false;
 
        /* Add new session to the session list */
        session_lock_list();