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f1e16794 DG |
1 | /* |
2 | * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License, version 2 only, as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
15 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
16 | */ | |
17 | ||
18 | #ifndef _CONSUMER_H | |
19 | #define _CONSUMER_H | |
20 | ||
f1e16794 | 21 | #include <common/consumer.h> |
173af62f | 22 | #include <common/hashtable/hashtable.h> |
00e2e675 DG |
23 | #include <lttng/lttng.h> |
24 | ||
44a5e5eb DG |
25 | #include "health.h" |
26 | ||
00e2e675 DG |
27 | enum consumer_dst_type { |
28 | CONSUMER_DST_LOCAL, | |
29 | CONSUMER_DST_NET, | |
30 | }; | |
f1e16794 | 31 | |
173af62f DG |
32 | struct consumer_socket { |
33 | /* File descriptor */ | |
34 | int fd; | |
35 | /* | |
36 | * To use this socket (send/recv), this lock MUST be acquired. | |
37 | */ | |
38 | pthread_mutex_t *lock; | |
2f77fc4b DG |
39 | |
40 | /* | |
41 | * Indicates if the socket was registered by a third part | |
42 | * (REGISTER_CONSUMER) or is the spawn consumer of the session daemon. | |
43 | * During the destroy phase of a consumer output, we close the socket if | |
44 | * this flag is set to 1 since we don't need the fd anymore. | |
45 | */ | |
46 | unsigned int registered; | |
47 | ||
ffe60014 DG |
48 | /* Flag if network sockets were sent to the consumer. */ |
49 | unsigned int control_sock_sent; | |
50 | unsigned int data_sock_sent; | |
51 | ||
173af62f DG |
52 | struct lttng_ht_node_ulong node; |
53 | }; | |
54 | ||
f1e16794 DG |
55 | struct consumer_data { |
56 | enum lttng_consumer_type type; | |
57 | ||
58 | pthread_t thread; /* Worker thread interacting with the consumer */ | |
a23ec3a7 DG |
59 | |
60 | /* Conditions used by the consumer thread to indicate readiness. */ | |
61 | pthread_cond_t cond; | |
62 | pthread_condattr_t condattr; | |
63 | pthread_mutex_t cond_mutex; | |
64 | ||
65 | /* | |
66 | * This is a flag condition indicating that the consumer thread is ready | |
67 | * and connected to the lttng-consumerd daemon. This flag MUST only be | |
68 | * updated by locking the condition mutex above or before spawning a | |
69 | * consumer thread. | |
70 | * | |
71 | * A value of 0 means that the thread is NOT ready. A value of 1 means that | |
72 | * the thread consumer did connect successfully to the lttng-consumerd | |
73 | * daemon. A negative value indicates that there is been an error and the | |
74 | * thread has likely quit. | |
75 | */ | |
76 | int consumer_thread_is_ready; | |
f1e16794 DG |
77 | |
78 | /* Mutex to control consumerd pid assignation */ | |
79 | pthread_mutex_t pid_mutex; | |
80 | pid_t pid; | |
81 | ||
82 | int err_sock; | |
83 | int cmd_sock; | |
84 | ||
85 | /* consumer error and command Unix socket path */ | |
86 | char err_unix_sock_path[PATH_MAX]; | |
87 | char cmd_unix_sock_path[PATH_MAX]; | |
44a5e5eb | 88 | |
173af62f DG |
89 | /* communication lock */ |
90 | pthread_mutex_t lock; | |
f1e16794 DG |
91 | }; |
92 | ||
00e2e675 DG |
93 | /* |
94 | * Network URIs | |
95 | */ | |
96 | struct consumer_net { | |
97 | /* | |
98 | * Indicate if URI type is set. Those flags should only be set when the | |
99 | * created URI is done AND valid. | |
100 | */ | |
101 | int control_isset; | |
102 | int data_isset; | |
103 | ||
104 | /* | |
105 | * The following two URIs MUST have the same destination address for | |
106 | * network streaming to work. Network hop are not yet supported. | |
107 | */ | |
108 | ||
109 | /* Control path for network streaming. */ | |
110 | struct lttng_uri control; | |
111 | ||
112 | /* Data path for network streaming. */ | |
113 | struct lttng_uri data; | |
114 | }; | |
115 | ||
116 | /* | |
117 | * Consumer output object describing where and how to send data. | |
118 | */ | |
119 | struct consumer_output { | |
00e2e675 DG |
120 | /* If the consumer is enabled meaning that should be used */ |
121 | unsigned int enabled; | |
122 | enum consumer_dst_type type; | |
173af62f | 123 | |
00e2e675 DG |
124 | /* |
125 | * The net_seq_index is the index of the network stream on the consumer | |
3f8e211f DG |
126 | * side. It tells the consumer which streams goes to which relayd with this |
127 | * index. The relayd sockets are index with it on the consumer side. | |
00e2e675 DG |
128 | */ |
129 | int net_seq_index; | |
173af62f | 130 | |
00e2e675 DG |
131 | /* |
132 | * Subdirectory path name used for both local and network consumer. | |
133 | */ | |
134 | char subdir[PATH_MAX]; | |
173af62f DG |
135 | |
136 | /* | |
137 | * Hashtable of consumer_socket index by the file descriptor value. For | |
138 | * multiarch consumer support, we can have more than one consumer (ex: 32 | |
139 | * and 64 bit). | |
140 | */ | |
141 | struct lttng_ht *socks; | |
142 | ||
00e2e675 DG |
143 | union { |
144 | char trace_path[PATH_MAX]; | |
145 | struct consumer_net net; | |
146 | } dst; | |
147 | }; | |
148 | ||
173af62f DG |
149 | struct consumer_socket *consumer_find_socket(int key, |
150 | struct consumer_output *consumer); | |
151 | struct consumer_socket *consumer_allocate_socket(int fd); | |
152 | void consumer_add_socket(struct consumer_socket *sock, | |
153 | struct consumer_output *consumer); | |
154 | void consumer_del_socket(struct consumer_socket *sock, | |
155 | struct consumer_output *consumer); | |
156 | void consumer_destroy_socket(struct consumer_socket *sock); | |
157 | ||
00e2e675 DG |
158 | struct consumer_output *consumer_create_output(enum consumer_dst_type type); |
159 | struct consumer_output *consumer_copy_output(struct consumer_output *obj); | |
160 | void consumer_destroy_output(struct consumer_output *obj); | |
161 | int consumer_set_network_uri(struct consumer_output *obj, | |
162 | struct lttng_uri *uri); | |
f50f23d9 | 163 | int consumer_send_fds(struct consumer_socket *sock, int *fds, size_t nb_fd); |
ffe60014 DG |
164 | int consumer_send_msg(struct consumer_socket *sock, |
165 | struct lttcomm_consumer_msg *msg); | |
f50f23d9 DG |
166 | int consumer_send_stream(struct consumer_socket *sock, |
167 | struct consumer_output *dst, struct lttcomm_consumer_msg *msg, | |
168 | int *fds, size_t nb_fd); | |
169 | int consumer_send_channel(struct consumer_socket *sock, | |
170 | struct lttcomm_consumer_msg *msg); | |
171 | int consumer_send_relayd_socket(struct consumer_socket *consumer_sock, | |
37278a1e | 172 | struct lttcomm_sock *sock, struct consumer_output *consumer, |
46e6455f | 173 | enum lttng_stream_type type, unsigned int session_id); |
173af62f DG |
174 | int consumer_send_destroy_relayd(struct consumer_socket *sock, |
175 | struct consumer_output *consumer); | |
f50f23d9 | 176 | int consumer_recv_status_reply(struct consumer_socket *sock); |
ffe60014 DG |
177 | int consumer_recv_status_channel(struct consumer_socket *sock, |
178 | unsigned long *key, unsigned int *stream_count); | |
2f77fc4b | 179 | void consumer_output_send_destroy_relayd(struct consumer_output *consumer); |
a4b92340 DG |
180 | int consumer_create_socket(struct consumer_data *data, |
181 | struct consumer_output *output); | |
2f77fc4b DG |
182 | int consumer_set_subdir(struct consumer_output *consumer, |
183 | const char *session_name); | |
37278a1e | 184 | |
ffe60014 DG |
185 | void consumer_init_ask_channel_comm_msg(struct lttcomm_consumer_msg *msg, |
186 | uint64_t subbuf_size, | |
187 | uint64_t num_subbuf, | |
188 | int overwrite, | |
189 | unsigned int switch_timer_interval, | |
190 | unsigned int read_timer_interval, | |
191 | int output, | |
192 | int type, | |
193 | uint64_t session_id, | |
194 | const char *pathname, | |
195 | const char *name, | |
196 | uid_t uid, | |
197 | gid_t gid, | |
198 | int relayd_id, | |
199 | unsigned long key, | |
200 | unsigned char *uuid); | |
00e2e675 DG |
201 | void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg, |
202 | enum lttng_consumer_command cmd, | |
203 | int channel_key, | |
204 | int stream_key, | |
ffe60014 | 205 | int cpu); |
00e2e675 DG |
206 | void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg, |
207 | enum lttng_consumer_command cmd, | |
208 | int channel_key, | |
ffe60014 DG |
209 | uint64_t session_id, |
210 | const char *pathname, | |
211 | uid_t uid, | |
212 | gid_t gid, | |
213 | int relayd_id, | |
c30aaa51 | 214 | const char *name, |
ffe60014 DG |
215 | unsigned int nb_init_streams, |
216 | enum lttng_event_output output, | |
217 | int type); | |
6d805429 | 218 | int consumer_is_data_pending(unsigned int id, |
806e2684 | 219 | struct consumer_output *consumer); |
00e2e675 | 220 | |
f1e16794 | 221 | #endif /* _CONSUMER_H */ |