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1 // SPDX-License-Identifier: GPL-3.0-or-later
2
3 #ifndef NETDATA_FUNCTIONS_EVLOOP_H
4 #define NETDATA_FUNCTIONS_EVLOOP_H
5
6 #include "../libnetdata.h"
7
8 #define MAX_FUNCTION_PARAMETERS 1024
9 #define PLUGINS_FUNCTIONS_TIMEOUT_DEFAULT 10 // seconds
10
11 // plugins.d 1st version of the external plugins and streaming protocol
12 #define PLUGINSD_KEYWORD_CHART "CHART"
13 #define PLUGINSD_KEYWORD_CHART_DEFINITION_END "CHART_DEFINITION_END"
14 #define PLUGINSD_KEYWORD_DIMENSION "DIMENSION"
15 #define PLUGINSD_KEYWORD_BEGIN "BEGIN"
16 #define PLUGINSD_KEYWORD_SET "SET"
17 #define PLUGINSD_KEYWORD_END "END"
18 #define PLUGINSD_KEYWORD_FLUSH "FLUSH"
19 #define PLUGINSD_KEYWORD_DISABLE "DISABLE"
20 #define PLUGINSD_KEYWORD_VARIABLE "VARIABLE"
21 #define PLUGINSD_KEYWORD_LABEL "LABEL"
22 #define PLUGINSD_KEYWORD_OVERWRITE "OVERWRITE"
23 #define PLUGINSD_KEYWORD_CLABEL "CLABEL"
24 #define PLUGINSD_KEYWORD_CLABEL_COMMIT "CLABEL_COMMIT"
25 #define PLUGINSD_KEYWORD_EXIT "EXIT"
26
27 // high-speed versions of BEGIN, SET, END
28 #define PLUGINSD_KEYWORD_BEGIN_V2 "BEGIN2"
29 #define PLUGINSD_KEYWORD_SET_V2 "SET2"
30 #define PLUGINSD_KEYWORD_END_V2 "END2"
31
32 // super high-speed versions of BEGIN, SET, END have this as first parameter
33 // enabled with the streaming capability STREAM_CAP_SLOTS
34 #define PLUGINSD_KEYWORD_SLOT "SLOT" // to change the length of this, update pluginsd_extract_chart_slot() too
35
36 // virtual hosts (only for external plugins - for streaming virtual hosts are like all other hosts)
37 #define PLUGINSD_KEYWORD_HOST_DEFINE "HOST_DEFINE"
38 #define PLUGINSD_KEYWORD_HOST_DEFINE_END "HOST_DEFINE_END"
39 #define PLUGINSD_KEYWORD_HOST_LABEL "HOST_LABEL"
40 #define PLUGINSD_KEYWORD_HOST "HOST"
41
42 // replication
43 // enabled with STREAM_CAP_REPLICATION
44 #define PLUGINSD_KEYWORD_REPLAY_CHART "REPLAY_CHART"
45 #define PLUGINSD_KEYWORD_REPLAY_BEGIN "RBEGIN"
46 #define PLUGINSD_KEYWORD_REPLAY_SET "RSET"
47 #define PLUGINSD_KEYWORD_REPLAY_RRDDIM_STATE "RDSTATE"
48 #define PLUGINSD_KEYWORD_REPLAY_RRDSET_STATE "RSSTATE"
49 #define PLUGINSD_KEYWORD_REPLAY_END "REND"
50
51 // plugins.d accepts these for functions (from external plugins or streaming children)
52 // related to STREAM_CAP_FUNCTIONS, STREAM_CAP_PROGRESS
53 #define PLUGINSD_KEYWORD_FUNCTION "FUNCTION" // define a function
54 #define PLUGINSD_KEYWORD_FUNCTION_PROGRESS "FUNCTION_PROGRESS" // send updates about function progress
55 #define PLUGINSD_KEYWORD_FUNCTION_RESULT_BEGIN "FUNCTION_RESULT_BEGIN" // the result of a function transaction
56 #define PLUGINSD_KEYWORD_FUNCTION_RESULT_END "FUNCTION_RESULT_END" // the end of the result of a func. trans.
57
58 // plugins.d sends these for functions (to external plugins or streaming children)
59 // related to STREAM_CAP_FUNCTIONS, STREAM_CAP_PROGRESS
60 #define PLUGINSD_CALL_FUNCTION "FUNCTION" // call a function to a plugin or remote host
61 #define PLUGINSD_CALL_FUNCTION_PAYLOAD_BEGIN "FUNCTION_PAYLOAD" // call a function with a payload
62 #define PLUGINSD_CALL_FUNCTION_PAYLOAD_END "FUNCTION_PAYLOAD_END" // function payload ends
63 #define PLUGINSD_CALL_FUNCTION_CANCEL "FUNCTION_CANCEL" // cancel a running function transaction
64 #define PLUGINSD_CALL_FUNCTION_PROGRESS "FUNCTION_PROGRESS" // let the function know the user is waiting
65
66 #define PLUGINSD_CALL_QUIT "QUIT" // ask the plugin to quit
67
68 // dyncfg
69 // enabled with STREAM_CAP_DYNCFG
70 #define PLUGINSD_KEYWORD_CONFIG "CONFIG"
71 #define PLUGINSD_KEYWORD_CONFIG_ACTION_CREATE "create"
72 #define PLUGINSD_KEYWORD_CONFIG_ACTION_DELETE "delete"
73 #define PLUGINSD_KEYWORD_CONFIG_ACTION_STATUS "status"
74 #define PLUGINSD_FUNCTION_CONFIG "config"
75
76 // claiming
77 #define PLUGINSD_KEYWORD_NODE_ID "NODE_ID"
78 #define PLUGINSD_KEYWORD_CLAIMED_ID "CLAIMED_ID"
79
80 #define PLUGINSD_KEYWORD_JSON "JSON"
81 #define PLUGINSD_KEYWORD_JSON_END "JSON_PAYLOAD_END"
82 #define PLUGINSD_KEYWORD_JSON_CMD_STREAM_PATH "STREAM_PATH"
83 #define PLUGINSD_KEYWORD_JSON_CMD_ML_MODEL "ML_MODEL"
84
85 // trust BEGIN timestamps from the plugin
86 #define PLUGINSD_KEYWORD_TRUST_DURATIONS "TRUST_DURATIONS"
87
88 typedef void (*functions_evloop_worker_execute_t)(const char *transaction, char *function, usec_t *stop_monotonic_ut,
89 bool *cancelled, BUFFER *payload, HTTP_ACCESS access,
90 const char *source, void *data);
91
92 struct functions_evloop_worker_job;
93 struct functions_evloop_globals *functions_evloop_init(size_t worker_threads, const char *tag, netdata_mutex_t *stdout_mutex, bool *plugin_should_exit, int *status);
94 void functions_evloop_add_function(struct functions_evloop_globals *wg, const char *function, functions_evloop_worker_execute_t cb, time_t default_timeout, void *data);
95 void functions_evloop_cancel_threads(struct functions_evloop_globals *wg);
96
97 #define FUNCTIONS_EXTENDED_TIME_ON_PROGRESS_UT (10 * USEC_PER_SEC)
98 static inline void functions_stop_monotonic_update_on_progress(usec_t *stop_monotonic_ut) {
99 usec_t now_ut = now_monotonic_usec();
100 if(now_ut + FUNCTIONS_EXTENDED_TIME_ON_PROGRESS_UT > *stop_monotonic_ut) {
101 nd_log(NDLS_DAEMON, NDLP_DEBUG, "Extending function timeout due to PROGRESS update...");
102 __atomic_store_n(stop_monotonic_ut, now_ut + FUNCTIONS_EXTENDED_TIME_ON_PROGRESS_UT, __ATOMIC_RELAXED);
103 }
104 else
105 nd_log(NDLS_DAEMON, NDLP_DEBUG, "Received PROGRESS update...");
106 }
107
108 #define pluginsd_function_result_begin_to_buffer(wb, transaction, code, content_type, expires) \
109 buffer_sprintf(wb \
110 , PLUGINSD_KEYWORD_FUNCTION_RESULT_BEGIN " \"%s\" %d \"%s\" %ld\n" \
111 , (transaction) ? (transaction) : "" \
112 , (int)(code) \
113 , (content_type) ? (content_type) : "" \
114 , (long int)(expires) \
115 )
116
117 #define pluginsd_function_result_end_to_buffer(wb) \
118 buffer_strcat(wb, "\n" PLUGINSD_KEYWORD_FUNCTION_RESULT_END "\n")
119
120 #define pluginsd_function_result_begin_to_stdout(transaction, code, content_type, expires) \
121 fprintf(stdout \
122 , PLUGINSD_KEYWORD_FUNCTION_RESULT_BEGIN " \"%s\" %d \"%s\" %ld\n" \
123 , (transaction) ? (transaction) : "" \
124 , (int)(code) \
125 , (content_type) ? (content_type) : "" \
126 , (long int)(expires) \
127 )
128
129 #define pluginsd_function_result_end_to_stdout() \
130 fprintf(stdout, "\n" PLUGINSD_KEYWORD_FUNCTION_RESULT_END "\n")
131
132 static inline void pluginsd_function_json_error_to_stdout(const char *transaction, int code, const char *msg) {
133 char buffer[PLUGINSD_LINE_MAX + 1];
134 json_escape_string(buffer, msg, PLUGINSD_LINE_MAX);
135
136 pluginsd_function_result_begin_to_stdout(transaction, code, "application/json", now_realtime_sec());
137 fprintf(stdout, "{\"status\":%d,\"error_message\":\"%s\"}", code, buffer);
138 pluginsd_function_result_end_to_stdout();
139 fflush(stdout);
140 }
141
142 static inline void pluginsd_function_result_to_stdout(const char *transaction, BUFFER *result) {
143 pluginsd_function_result_begin_to_stdout(transaction, result->response_code,
144 content_type_id2string(result->content_type),
145 result->expires);
146
147 fwrite(buffer_tostring(result), buffer_strlen(result), 1, stdout);
148
149 pluginsd_function_result_end_to_stdout();
150 fflush(stdout);
151 }
152
153 static inline void pluginsd_function_progress_to_stdout(const char *transaction, size_t done, size_t all) {
154 fprintf(stdout, PLUGINSD_KEYWORD_FUNCTION_PROGRESS " '%s' %zu %zu\n",
155 transaction, done, all);
156 fflush(stdout);
157 }
158
159 static inline void send_newline_and_flush(netdata_mutex_t *mutex) {
160 netdata_mutex_lock(mutex);
161 fprintf(stdout, "\n");
162 fflush(stdout);
163 netdata_mutex_unlock(mutex);
164 }
165
166 void functions_evloop_dyncfg_add(struct functions_evloop_globals *wg, const char *id, const char *path,
167 DYNCFG_STATUS status, DYNCFG_TYPE type, DYNCFG_SOURCE_TYPE source_type, const char *source, DYNCFG_CMDS cmds,
168 HTTP_ACCESS view_access, HTTP_ACCESS edit_access,
169 dyncfg_cb_t cb, void *data);
170
171 void functions_evloop_dyncfg_del(struct functions_evloop_globals *wg, const char *id);
172 void functions_evloop_dyncfg_status(struct functions_evloop_globals *wg, const char *id, DYNCFG_STATUS status);
173
174 #endif //NETDATA_FUNCTIONS_EVLOOP_H