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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 | ||
21 | #include <semaphore.h> | |
22 | ||
23 | #include <common/consumer.h> | |
00e2e675 DG |
24 | #include <lttng/lttng.h> |
25 | ||
44a5e5eb DG |
26 | #include "health.h" |
27 | ||
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28 | enum consumer_dst_type { |
29 | CONSUMER_DST_LOCAL, | |
30 | CONSUMER_DST_NET, | |
31 | }; | |
f1e16794 DG |
32 | |
33 | struct consumer_data { | |
34 | enum lttng_consumer_type type; | |
35 | ||
36 | pthread_t thread; /* Worker thread interacting with the consumer */ | |
37 | sem_t sem; | |
38 | ||
39 | /* Mutex to control consumerd pid assignation */ | |
40 | pthread_mutex_t pid_mutex; | |
41 | pid_t pid; | |
42 | ||
43 | int err_sock; | |
44 | int cmd_sock; | |
45 | ||
46 | /* consumer error and command Unix socket path */ | |
47 | char err_unix_sock_path[PATH_MAX]; | |
48 | char cmd_unix_sock_path[PATH_MAX]; | |
44a5e5eb DG |
49 | |
50 | /* Health check of the thread */ | |
51 | struct health_state health; | |
f1e16794 DG |
52 | }; |
53 | ||
00e2e675 DG |
54 | /* |
55 | * Network URIs | |
56 | */ | |
57 | struct consumer_net { | |
58 | /* | |
59 | * Indicate if URI type is set. Those flags should only be set when the | |
60 | * created URI is done AND valid. | |
61 | */ | |
62 | int control_isset; | |
63 | int data_isset; | |
64 | ||
65 | /* | |
66 | * The following two URIs MUST have the same destination address for | |
67 | * network streaming to work. Network hop are not yet supported. | |
68 | */ | |
69 | ||
70 | /* Control path for network streaming. */ | |
71 | struct lttng_uri control; | |
72 | ||
73 | /* Data path for network streaming. */ | |
74 | struct lttng_uri data; | |
75 | }; | |
76 | ||
77 | /* | |
78 | * Consumer output object describing where and how to send data. | |
79 | */ | |
80 | struct consumer_output { | |
81 | /* Consumer socket file descriptor */ | |
82 | int sock; | |
83 | /* If the consumer is enabled meaning that should be used */ | |
84 | unsigned int enabled; | |
85 | enum consumer_dst_type type; | |
86 | /* | |
87 | * The net_seq_index is the index of the network stream on the consumer | |
88 | * side. It's basically the relayd socket file descriptor value so the | |
89 | * consumer can identify which streams goes with which socket. | |
90 | */ | |
91 | int net_seq_index; | |
92 | /* | |
93 | * Subdirectory path name used for both local and network consumer. | |
94 | */ | |
95 | char subdir[PATH_MAX]; | |
96 | union { | |
97 | char trace_path[PATH_MAX]; | |
98 | struct consumer_net net; | |
99 | } dst; | |
100 | }; | |
101 | ||
102 | struct consumer_output *consumer_create_output(enum consumer_dst_type type); | |
103 | struct consumer_output *consumer_copy_output(struct consumer_output *obj); | |
104 | void consumer_destroy_output(struct consumer_output *obj); | |
105 | int consumer_set_network_uri(struct consumer_output *obj, | |
106 | struct lttng_uri *uri); | |
107 | int consumer_send_fds(int sock, int *fds, size_t nb_fd); | |
108 | int consumer_send_stream(int sock, struct consumer_output *dst, | |
109 | struct lttcomm_consumer_msg *msg, int *fds, size_t nb_fd); | |
110 | int consumer_send_channel(int sock, struct lttcomm_consumer_msg *msg); | |
37278a1e DG |
111 | int consumer_send_relayd_socket(int consumer_sock, |
112 | struct lttcomm_sock *sock, struct consumer_output *consumer, | |
113 | enum lttng_stream_type type); | |
114 | ||
00e2e675 DG |
115 | void consumer_init_stream_comm_msg(struct lttcomm_consumer_msg *msg, |
116 | enum lttng_consumer_command cmd, | |
117 | int channel_key, | |
118 | int stream_key, | |
119 | uint32_t state, | |
120 | enum lttng_event_output output, | |
121 | uint64_t mmap_len, | |
122 | uid_t uid, | |
123 | gid_t gid, | |
124 | int net_index, | |
125 | unsigned int metadata_flag, | |
126 | const char *name, | |
127 | const char *pathname); | |
128 | void consumer_init_channel_comm_msg(struct lttcomm_consumer_msg *msg, | |
129 | enum lttng_consumer_command cmd, | |
130 | int channel_key, | |
131 | uint64_t max_sb_size, | |
132 | uint64_t mmap_len, | |
133 | const char *name); | |
134 | ||
f1e16794 | 135 | #endif /* _CONSUMER_H */ |