FazBrowse GitHub Viewer
|
Trending
|
URL:
|
Home
Tools:
[Download Repo ZIP]
[View Raw Code]
[Original HTTPS Page]
netdata/exporting/process_data.c at master · feiyunwill/netdata · GitHub
feiyunwill
/
netdata
Public
forked from
netdata/netdata
Notifications
You must be signed in to change notification settings
Fork
0
Star
0
Code
Pull requests
0
Actions
Projects
Security and quality
0
Insights
Additional navigation options
Code
Pull requests
Actions
Projects
Security and quality
Insights
Expand file tree
Breadcrumbs
netdata
/
exporting
/
process_data.c
Copy path
More file actions
More file actions
Latest commit
History
History
History
426 lines (369 loc) · 13.1 KB
Breadcrumbs
netdata
/
exporting
/
process_data.c
Copy path
File metadata and controls
426 lines (369 loc) · 13.1 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
// SPDX-License-Identifier: GPL-3.0-or-later
#include
"exporting_engine.h"
/**
* Normalize chart and dimension names
*
* Substitute '_' for any special character except '.'.
*
* @param dst where to copy name to.
* @param src where to copy name from.
* @param max_len the maximum size of copied name.
* @return Returns the size of the copied name.
*/
size_t
exporting_name_copy
(
char
*
dst
,
const
char
*
src
,
size_t
max_len
)
{
size_t
n
;
for
(
n
=
0
;
*
src
&&
n
<
max_len
;
dst
++
,
src
++
,
n
++
) {
char
c
=
*
src
;
if
(
c
!=
'.'
&&
!
isalnum
(
c
))
*
dst
=
'_'
;
else
*
dst
=
c
;
}
*
dst
=
'\0'
;
return
n
;
}
/**
* Mark scheduled instances
*
* Any instance can have its own update interval. On every exporting engine update only those instances are picked,
* which are scheduled for the update.
*
* @param engine an engine data structure.
* @return Returns 1 if there are instances to process
*/
int
mark_scheduled_instances
(
struct
engine
*
engine
)
{
int
instances_were_scheduled
=
0
;
for
(
struct
instance
*
instance
=
engine
->
instance_root
;
instance
;
instance
=
instance
->
next
) {
if
(!
instance
->
disabled
&&
(
engine
->
now
%
instance
->
config
.
update_every
>=
instance
->
config
.
update_every
-
localhost
->
rrd_update_every
)) {
instance
->
scheduled
=
1
;
instances_were_scheduled
=
1
;
instance
->
before
=
engine
->
now
;
}
}
return
instances_were_scheduled
;
}
/**
* Calculate the SUM or AVERAGE of a dimension, for any timeframe
*
* May return NAN if the database does not have any value in the give timeframe.
*
* @param instance an instance data structure.
* @param rd a dimension(metric) in the Netdata database.
* @param last_timestamp the timestamp that should be reported to the exporting connector instance.
* @return Returns the value, calculated over the given period.
*/
calculated_number
exporting_calculate_value_from_stored_data
(
struct
instance
*
instance
,
RRDDIM
*
rd
,
time_t
*
last_timestamp
)
{
RRDSET
*
st
=
rd
->
rrdset
;
RRDHOST
*
host
=
st
->
rrdhost
;
time_t
after
=
instance
->
after
;
time_t
before
=
instance
->
before
;
// find the edges of the rrd database for this chart
time_t
first_t
=
rd
->
state
->
query_ops
.
oldest_time
(
rd
);
time_t
last_t
=
rd
->
state
->
query_ops
.
latest_time
(
rd
);
time_t
update_every
=
st
->
update_every
;
struct
rrddim_query_handle
handle
;
storage_number
n
;
// step back a little, to make sure we have complete data collection
// for all metrics
after
-=
update_every
*
2
;
before
-=
update_every
*
2
;
// align the time-frame
after
=
after
-
(
after
%
update_every
);
before
=
before
-
(
before
%
update_every
);
// for before, loose another iteration
// the latest point will be reported the next time
before
-=
update_every
;
if
(
unlikely
(
after
>
before
))
// this can happen when update_every > before - after
after
=
before
;
if
(
unlikely
(
after
<
first_t
))
after
=
first_t
;
if
(
unlikely
(
before
>
last_t
))
before
=
last_t
;
if
(
unlikely
(
before
<
first_t
||
after
>
last_t
)) {
// the chart has not been updated in the wanted timeframe
debug
(
D_BACKEND
,
"EXPORTING: %s.%s.%s: aligned timeframe %lu to %lu is outside the chart's database range %lu to %lu"
,
host
->
hostname
,
st
->
id
,
rd
->
id
,
(
unsigned long
)
after
,
(
unsigned long
)
before
,
(
unsigned long
)
first_t
,
(
unsigned long
)
last_t
);
return
NAN
;
}
*
last_timestamp
=
before
;
size_t
counter
=
0
;
calculated_number
sum
=
0
;
for
(
rd
->
state
->
query_ops
.
init
(
rd
,
&
handle
,
after
,
before
); !
rd
->
state
->
query_ops
.
is_finished
(
&
handle
);) {
time_t
curr_t
;
n
=
rd
->
state
->
query_ops
.
next_metric
(
&
handle
,
&
curr_t
);
if
(
unlikely
(!
does_storage_number_exist
(
n
))) {
// not collected
continue
;
}
calculated_number
value
=
unpack_storage_number
(
n
);
sum
+=
value
;
counter
++
;
}
rd
->
state
->
query_ops
.
finalize
(
&
handle
);
if
(
unlikely
(!
counter
)) {
debug
(
D_BACKEND
,
"EXPORTING: %s.%s.%s: no values stored in database for range %lu to %lu"
,
host
->
hostname
,
st
->
id
,
rd
->
id
,
(
unsigned long
)
after
,
(
unsigned long
)
before
);
return
NAN
;
}
if
(
unlikely
(
EXPORTING_OPTIONS_DATA_SOURCE
(
instance
->
config
.
options
)
==
EXPORTING_SOURCE_DATA_SUM
))
return
sum
;
return
sum
/ (
calculated_number
)
counter
;
}
/**
* Start batch formatting for every connector instance's buffer
*
* @param engine an engine data structure.
*/
void
start_batch_formatting
(
struct
engine
*
engine
)
{
for
(
struct
instance
*
instance
=
engine
->
instance_root
;
instance
;
instance
=
instance
->
next
) {
if
(
instance
->
scheduled
) {
uv_mutex_lock
(
&
instance
->
mutex
);
if
(
instance
->
start_batch_formatting
&&
instance
->
start_batch_formatting
(
instance
)
!=
0
) {
error
(
"EXPORTING: cannot start batch formatting for %s"
,
instance
->
config
.
name
);
disable_instance
(
instance
);
}
}
}
}
/**
* Start host formatting for every connector instance's buffer
*
* @param engine an engine data structure.
* @param host a data collecting host.
*/
void
start_host_formatting
(
struct
engine
*
engine
,
RRDHOST
*
host
)
{
for
(
struct
instance
*
instance
=
engine
->
instance_root
;
instance
;
instance
=
instance
->
next
) {
if
(
instance
->
scheduled
) {
if
(
rrdhost_is_exportable
(
instance
,
host
)) {
if
(
instance
->
start_host_formatting
&&
instance
->
start_host_formatting
(
instance
,
host
)
!=
0
) {
error
(
"EXPORTING: cannot start host formatting for %s"
,
instance
->
config
.
name
);
disable_instance
(
instance
);
}
}
else
{
instance
->
skip_host
=
1
;
}
}
}
}
/**
* Start chart formatting for every connector instance's buffer
*
* @param engine an engine data structure.
* @param st a chart.
*/
void
start_chart_formatting
(
struct
engine
*
engine
,
RRDSET
*
st
)
{
for
(
struct
instance
*
instance
=
engine
->
instance_root
;
instance
;
instance
=
instance
->
next
) {
if
(
instance
->
scheduled
&&
!
instance
->
skip_host
) {
if
(
rrdset_is_exportable
(
instance
,
st
)) {
if
(
instance
->
start_chart_formatting
&&
instance
->
start_chart_formatting
(
instance
,
st
)
!=
0
) {
error
(
"EXPORTING: cannot start chart formatting for %s"
,
instance
->
config
.
name
);
disable_instance
(
instance
);
}
}
else
{
instance
->
skip_chart
=
1
;
}
}
}
}
/**
* Format metric for every connector instance's buffer
*
* @param engine an engine data structure.
* @param rd a dimension(metric) in the Netdata database.
*/
void
metric_formatting
(
struct
engine
*
engine
,
RRDDIM
*
rd
)
{
for
(
struct
instance
*
instance
=
engine
->
instance_root
;
instance
;
instance
=
instance
->
next
) {
if
(
instance
->
scheduled
&&
!
instance
->
skip_host
&&
!
instance
->
skip_chart
) {
if
(
instance
->
metric_formatting
&&
instance
->
metric_formatting
(
instance
,
rd
)
!=
0
) {
error
(
"EXPORTING: cannot format metric for %s"
,
instance
->
config
.
name
);
disable_instance
(
instance
);
continue
;
}
instance
->
stats
.
buffered_metrics
++
;
}
}
}
/**
* End chart formatting for every connector instance's buffer
*
* @param engine an engine data structure.
* @param a chart.
*/
void
end_chart_formatting
(
struct
engine
*
engine
,
RRDSET
*
st
)
{
for
(
struct
instance
*
instance
=
engine
->
instance_root
;
instance
;
instance
=
instance
->
next
) {
if
(
instance
->
scheduled
&&
!
instance
->
skip_host
&&
!
instance
->
skip_chart
) {
if
(
instance
->
end_chart_formatting
&&
instance
->
end_chart_formatting
(
instance
,
st
)
!=
0
) {
error
(
"EXPORTING: cannot end chart formatting for %s"
,
instance
->
config
.
name
);
disable_instance
(
instance
);
continue
;
}
}
instance
->
skip_chart
=
0
;
}
}
/**
* End host formatting for every connector instance's buffer
*
* @param engine an engine data structure.
* @param host a data collecting host.
*/
void
end_host_formatting
(
struct
engine
*
engine
,
RRDHOST
*
host
)
{
for
(
struct
instance
*
instance
=
engine
->
instance_root
;
instance
;
instance
=
instance
->
next
) {
if
(
instance
->
scheduled
&&
!
instance
->
skip_host
) {
if
(
instance
->
end_host_formatting
&&
instance
->
end_host_formatting
(
instance
,
host
)
!=
0
) {
error
(
"EXPORTING: cannot end host formatting for %s"
,
instance
->
config
.
name
);
disable_instance
(
instance
);
continue
;
}
}
instance
->
skip_host
=
0
;
}
}
/**
* End batch formatting for every connector instance's buffer
*
* @param engine an engine data structure.
*/
void
end_batch_formatting
(
struct
engine
*
engine
)
{
for
(
struct
instance
*
instance
=
engine
->
instance_root
;
instance
;
instance
=
instance
->
next
) {
if
(
instance
->
scheduled
) {
if
(
instance
->
end_batch_formatting
&&
instance
->
end_batch_formatting
(
instance
)
!=
0
) {
error
(
"EXPORTING: cannot end batch formatting for %s"
,
instance
->
config
.
name
);
disable_instance
(
instance
);
continue
;
}
uv_mutex_unlock
(
&
instance
->
mutex
);
instance
->
data_is_ready
=
1
;
uv_cond_signal
(
&
instance
->
cond_var
);
instance
->
scheduled
=
0
;
instance
->
after
=
instance
->
before
;
}
}
}
/**
* Prepare buffers
*
* Walk through the Netdata database and fill buffers for every scheduled exporting connector instance according to
* configured rules.
*
* @param engine an engine data structure.
*/
void
prepare_buffers
(
struct
engine
*
engine
)
{
netdata_thread_disable_cancelability
();
start_batch_formatting
(
engine
);
rrd_rdlock
();
RRDHOST
*
host
;
rrdhost_foreach_read
(
host
)
{
rrdhost_rdlock
(
host
);
start_host_formatting
(
engine
,
host
);
RRDSET
*
st
;
rrdset_foreach_read
(
st
,
host
)
{
rrdset_rdlock
(
st
);
start_chart_formatting
(
engine
,
st
);
RRDDIM
*
rd
;
rrddim_foreach_read
(
rd
,
st
)
metric_formatting
(
engine
,
rd
);
end_chart_formatting
(
engine
,
st
);
rrdset_unlock
(
st
);
}
end_host_formatting
(
engine
,
host
);
rrdhost_unlock
(
host
);
}
rrd_unlock
();
netdata_thread_enable_cancelability
();
end_batch_formatting
(
engine
);
}
/**
* Flush a buffer with host labels
*
* @param instance an instance data structure.
* @param host a data collecting host.
* @return Always returns 0.
*/
int
flush_host_labels
(
struct
instance
*
instance
,
RRDHOST
*
host
)
{
(
void
)
host
;
if
(
instance
->
labels
)
buffer_flush
(
instance
->
labels
);
return
0
;
}
/**
* End a batch for a simple connector
*
* @param instance an instance data structure.
* @return Returns 0 on success, 1 on failure.
*/
int
simple_connector_end_batch
(
struct
instance
*
instance
)
{
struct
simple_connector_data
*
simple_connector_data
=
(
struct
simple_connector_data
*
)
instance
->
connector_specific_data
;
struct
stats
*
stats
=
&
instance
->
stats
;
BUFFER
*
instance_buffer
=
(
BUFFER
*
)
instance
->
buffer
;
struct
simple_connector_buffer
*
last_buffer
=
simple_connector_data
->
last_buffer
;
if
(!
last_buffer
->
buffer
) {
last_buffer
->
buffer
=
buffer_create
(
0
);
}
if
(
last_buffer
->
used
) {
// ring buffer is full, reuse the oldest element
simple_connector_data
->
first_buffer
=
simple_connector_data
->
first_buffer
->
next
;
stats
->
data_lost_events
++
;
stats
->
lost_metrics
+=
last_buffer
->
buffered_metrics
;
stats
->
lost_bytes
+=
last_buffer
->
buffered_bytes
;
}
// swap buffers
BUFFER
*
tmp_buffer
=
last_buffer
->
buffer
;
last_buffer
->
buffer
=
instance_buffer
;
instance
->
buffer
=
instance_buffer
=
tmp_buffer
;
buffer_flush
(
instance_buffer
);
if
(
last_buffer
->
header
)
buffer_flush
(
last_buffer
->
header
);
else
last_buffer
->
header
=
buffer_create
(
0
);
if
(
instance
->
prepare_header
)
instance
->
prepare_header
(
instance
);
// The stats->buffered_metrics is used in the simple connector batch formatting as a variable for the number
// of metrics, added in the current iteration, so we are clearing it here. We will use the
// simple_connector_data->total_buffered_metrics in the worker to show the statistics.
size_t
buffered_metrics
=
(
size_t
)
stats
->
buffered_metrics
;
stats
->
buffered_metrics
=
0
;
size_t
buffered_bytes
=
buffer_strlen
(
last_buffer
->
buffer
);
last_buffer
->
buffered_metrics
=
buffered_metrics
;
last_buffer
->
buffered_bytes
=
buffered_bytes
;
last_buffer
->
used
++
;
simple_connector_data
->
total_buffered_metrics
+=
buffered_metrics
;
stats
->
buffered_bytes
+=
buffered_bytes
;
simple_connector_data
->
last_buffer
=
simple_connector_data
->
last_buffer
->
next
;
return
0
;
}
Back
|
FazBrowse Home
|
New Git URL