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f37913e8 | 1 | #!/usr/bin/python3 |
eed405de MT |
2 | ############################################################################### |
3 | # # | |
4 | # collecty - A system statistics collection daemon for IPFire # | |
5 | # Copyright (C) 2012 IPFire development team # | |
6 | # # | |
7 | # This program is free software: you can redistribute it and/or modify # | |
8 | # it under the terms of the GNU General Public License as published by # | |
9 | # the Free Software Foundation, either version 3 of the License, or # | |
10 | # (at your option) any later version. # | |
11 | # # | |
12 | # This program is distributed in the hope that it will be useful, # | |
13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of # | |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # | |
15 | # GNU General Public License for more details. # | |
16 | # # | |
17 | # You should have received a copy of the GNU General Public License # | |
18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. # | |
19 | # # | |
20 | ############################################################################### | |
21 | ||
72364063 | 22 | import datetime |
4ac0cdf0 | 23 | import logging |
965a9c51 | 24 | import math |
4ac0cdf0 | 25 | import os |
cd8bba0b | 26 | import re |
4ac0cdf0 | 27 | import rrdtool |
c968f6d9 | 28 | import tempfile |
49ce926e | 29 | import threading |
4ac0cdf0 | 30 | import time |
f37913e8 | 31 | import unicodedata |
4ac0cdf0 | 32 | |
429ba506 | 33 | from .. import locales |
4d9ed86e | 34 | from .. import util |
4ac0cdf0 | 35 | from ..constants import * |
eed405de MT |
36 | from ..i18n import _ |
37 | ||
cd8bba0b MT |
38 | DEF_MATCH = re.compile(r"C?DEF:([A-Za-z0-9_]+)=") |
39 | ||
cb1ccb4f MT |
40 | class Environment(object): |
41 | """ | |
42 | Sets the correct environment for rrdtool to create | |
43 | localised graphs and graphs in the correct timezone. | |
44 | """ | |
45 | def __init__(self, timezone, locale): | |
46 | # Build the new environment | |
47 | self.new_environment = { | |
48 | "TZ" : timezone or DEFAULT_TIMEZONE, | |
49 | } | |
50 | ||
51 | for k in ("LANG", "LC_ALL"): | |
52 | self.new_environment[k] = locale or DEFAULT_LOCALE | |
53 | ||
54 | def __enter__(self): | |
55 | # Save the current environment | |
56 | self.old_environment = {} | |
57 | for k in self.new_environment: | |
58 | self.old_environment[k] = os.environ.get(k, None) | |
59 | ||
60 | # Apply the new one | |
61 | os.environ.update(self.new_environment) | |
62 | ||
63 | def __exit__(self, type, value, traceback): | |
64 | # Roll back to the previous environment | |
65 | for k, v in self.old_environment.items(): | |
66 | if v is None: | |
67 | try: | |
68 | del os.environ[k] | |
69 | except KeyError: | |
70 | pass | |
71 | else: | |
72 | os.environ[k] = v | |
73 | ||
74 | ||
f37913e8 MT |
75 | class PluginRegistration(type): |
76 | plugins = {} | |
77 | ||
78 | def __init__(plugin, name, bases, dict): | |
79 | type.__init__(plugin, name, bases, dict) | |
80 | ||
81 | # The main class from which is inherited is not registered | |
82 | # as a plugin. | |
83 | if name == "Plugin": | |
84 | return | |
85 | ||
86 | if not all((plugin.name, plugin.description)): | |
87 | raise RuntimeError(_("Plugin is not properly configured: %s") % plugin) | |
88 | ||
89 | PluginRegistration.plugins[plugin.name] = plugin | |
90 | ||
91 | ||
92 | def get(): | |
93 | """ | |
94 | Returns a list with all automatically registered plugins. | |
95 | """ | |
96 | return PluginRegistration.plugins.values() | |
97 | ||
98 | class Plugin(object, metaclass=PluginRegistration): | |
4ac0cdf0 MT |
99 | # The name of this plugin. |
100 | name = None | |
101 | ||
102 | # A description for this plugin. | |
103 | description = None | |
104 | ||
b1ea4956 MT |
105 | # Templates which can be used to generate a graph out of |
106 | # the data from this data source. | |
107 | templates = [] | |
108 | ||
72364063 MT |
109 | # The default interval for all plugins |
110 | interval = 60 | |
4ac0cdf0 | 111 | |
6e603f14 MT |
112 | # Priority |
113 | priority = 0 | |
114 | ||
eed405de | 115 | def __init__(self, collecty, **kwargs): |
eed405de MT |
116 | self.collecty = collecty |
117 | ||
4ac0cdf0 MT |
118 | # Check if this plugin was configured correctly. |
119 | assert self.name, "Name of the plugin is not set: %s" % self.name | |
120 | assert self.description, "Description of the plugin is not set: %s" % self.description | |
4ac0cdf0 MT |
121 | |
122 | # Initialize the logger. | |
123 | self.log = logging.getLogger("collecty.plugins.%s" % self.name) | |
eed405de | 124 | |
eed405de MT |
125 | self.data = [] |
126 | ||
269f74cd MT |
127 | # Run some custom initialization. |
128 | self.init(**kwargs) | |
129 | ||
0ee0c42d | 130 | self.log.debug(_("Successfully initialized %s") % self.__class__.__name__) |
4ac0cdf0 | 131 | |
73db5226 | 132 | @property |
72364063 | 133 | def path(self): |
73db5226 | 134 | """ |
72364063 MT |
135 | Returns the name of the sub directory in which all RRD files |
136 | for this plugin should be stored in. | |
73db5226 MT |
137 | """ |
138 | return self.name | |
139 | ||
72364063 MT |
140 | ### Basic methods |
141 | ||
142 | def init(self, **kwargs): | |
4ac0cdf0 | 143 | """ |
72364063 | 144 | Do some custom initialization stuff here. |
4ac0cdf0 | 145 | """ |
72364063 MT |
146 | pass |
147 | ||
148 | def collect(self): | |
149 | """ | |
150 | Gathers the statistical data, this plugin collects. | |
151 | """ | |
152 | time_start = time.time() | |
153 | ||
154 | # Run through all objects of this plugin and call the collect method. | |
155 | for o in self.objects: | |
156 | now = datetime.datetime.utcnow() | |
157 | try: | |
158 | result = o.collect() | |
f648421a | 159 | |
a9af411f | 160 | result = self._format_result(result) |
72364063 MT |
161 | except: |
162 | self.log.warning(_("Unhandled exception in %s.collect()") % o, exc_info=True) | |
163 | continue | |
164 | ||
165 | if not result: | |
166 | self.log.warning(_("Received empty result: %s") % o) | |
167 | continue | |
168 | ||
169 | self.log.debug(_("Collected %s: %s") % (o, result)) | |
170 | ||
171 | # Add the object to the write queue so that the data is written | |
172 | # to the databases later. | |
173 | self.collecty.write_queue.add(o, now, result) | |
174 | ||
175 | # Returns the time this function took to complete. | |
49c1b8fd | 176 | delay = time.time() - time_start |
72364063 | 177 | |
49c1b8fd MT |
178 | # Log some warning when a collect method takes too long to return some data |
179 | if delay >= 60: | |
180 | self.log.warning(_("A worker thread was stalled for %.4fs") % delay) | |
4ac0cdf0 | 181 | |
a9af411f MT |
182 | @staticmethod |
183 | def _format_result(result): | |
184 | if not isinstance(result, tuple) and not isinstance(result, list): | |
185 | return result | |
186 | ||
9e84485f | 187 | # Replace all Nones by UNKNOWN |
a9af411f MT |
188 | s = [] |
189 | ||
190 | for e in result: | |
191 | if e is None: | |
9e84485f | 192 | e = "U" |
a9af411f | 193 | |
9e84485f | 194 | s.append("%s" % e) |
a9af411f MT |
195 | |
196 | return ":".join(s) | |
197 | ||
c968f6d9 MT |
198 | def get_object(self, id): |
199 | for object in self.objects: | |
200 | if not object.id == id: | |
201 | continue | |
202 | ||
203 | return object | |
204 | ||
429ba506 | 205 | def get_template(self, template_name, object_id, locale=None, timezone=None): |
c968f6d9 MT |
206 | for template in self.templates: |
207 | if not template.name == template_name: | |
208 | continue | |
209 | ||
429ba506 | 210 | return template(self, object_id, locale=locale, timezone=timezone) |
c968f6d9 | 211 | |
429ba506 MT |
212 | def generate_graph(self, template_name, object_id="default", |
213 | timezone=None, locale=None, **kwargs): | |
214 | template = self.get_template(template_name, object_id=object_id, | |
215 | timezone=timezone, locale=locale) | |
c968f6d9 MT |
216 | if not template: |
217 | raise RuntimeError("Could not find template %s" % template_name) | |
218 | ||
219 | time_start = time.time() | |
220 | ||
0308c0f3 | 221 | graph = template.generate_graph(**kwargs) |
c968f6d9 MT |
222 | |
223 | duration = time.time() - time_start | |
0ee0c42d | 224 | self.log.debug(_("Generated graph %s in %.1fms") \ |
c968f6d9 MT |
225 | % (template, duration * 1000)) |
226 | ||
227 | return graph | |
228 | ||
a3864812 MT |
229 | def graph_info(self, template_name, object_id="default", |
230 | timezone=None, locale=None, **kwargs): | |
231 | template = self.get_template(template_name, object_id=object_id, | |
232 | timezone=timezone, locale=locale) | |
233 | if not template: | |
234 | raise RuntimeError("Could not find template %s" % template_name) | |
235 | ||
236 | return template.graph_info() | |
237 | ||
8ee5a71a MT |
238 | def last_update(self, object_id="default"): |
239 | object = self.get_object(object_id) | |
240 | if not object: | |
241 | raise RuntimeError("Could not find object %s" % object_id) | |
242 | ||
243 | return object.last_update() | |
244 | ||
72364063 MT |
245 | |
246 | class Object(object): | |
247 | # The schema of the RRD database. | |
248 | rrd_schema = None | |
249 | ||
250 | # RRA properties. | |
418174a4 MT |
251 | rra_types = ("AVERAGE", "MIN", "MAX") |
252 | rra_timespans = ( | |
253 | ("1m", "10d"), | |
254 | ("1h", "18M"), | |
255 | ("1d", "5y"), | |
256 | ) | |
72364063 MT |
257 | |
258 | def __init__(self, plugin, *args, **kwargs): | |
259 | self.plugin = plugin | |
260 | ||
261 | # Indicates if this object has collected its data | |
262 | self.collected = False | |
263 | ||
264 | # Initialise this object | |
265 | self.init(*args, **kwargs) | |
266 | ||
267 | # Create the database file. | |
268 | self.create() | |
269 | ||
270 | def __repr__(self): | |
271 | return "<%s>" % self.__class__.__name__ | |
4ac0cdf0 | 272 | |
d5d4c0e7 MT |
273 | def __lt__(self, other): |
274 | return self.id < other.id | |
275 | ||
965a9c51 | 276 | @property |
72364063 MT |
277 | def collecty(self): |
278 | return self.plugin.collecty | |
965a9c51 | 279 | |
881751ed | 280 | @property |
72364063 MT |
281 | def log(self): |
282 | return self.plugin.log | |
283 | ||
284 | @property | |
285 | def id(self): | |
286 | """ | |
287 | Returns a UNIQUE identifier for this object. As this is incorporated | |
288 | into the path of RRD file, it must only contain ASCII characters. | |
289 | """ | |
290 | raise NotImplementedError | |
881751ed | 291 | |
4ac0cdf0 MT |
292 | @property |
293 | def file(self): | |
294 | """ | |
295 | The absolute path to the RRD file of this plugin. | |
296 | """ | |
57797e47 MT |
297 | filename = self._normalise_filename("%s.rrd" % self.id) |
298 | ||
299 | return os.path.join(DATABASE_DIR, self.plugin.path, filename) | |
300 | ||
301 | @staticmethod | |
302 | def _normalise_filename(filename): | |
303 | # Convert the filename into ASCII characters only | |
f37913e8 | 304 | filename = unicodedata.normalize("NFKC", filename) |
57797e47 MT |
305 | |
306 | # Replace any spaces by dashes | |
307 | filename = filename.replace(" ", "-") | |
308 | ||
309 | return filename | |
72364063 MT |
310 | |
311 | ### Basic methods | |
312 | ||
313 | def init(self, *args, **kwargs): | |
314 | """ | |
315 | Do some custom initialization stuff here. | |
316 | """ | |
317 | pass | |
eed405de | 318 | |
4ac0cdf0 MT |
319 | def create(self): |
320 | """ | |
321 | Creates an empty RRD file with the desired data structures. | |
322 | """ | |
323 | # Skip if the file does already exist. | |
324 | if os.path.exists(self.file): | |
325 | return | |
eed405de | 326 | |
4ac0cdf0 MT |
327 | dirname = os.path.dirname(self.file) |
328 | if not os.path.exists(dirname): | |
329 | os.makedirs(dirname) | |
eed405de | 330 | |
965a9c51 | 331 | # Create argument list. |
ff0bbd88 | 332 | args = self.get_rrd_schema() |
965a9c51 MT |
333 | |
334 | rrdtool.create(self.file, *args) | |
eed405de | 335 | |
4ac0cdf0 | 336 | self.log.debug(_("Created RRD file %s.") % self.file) |
dadb8fb0 MT |
337 | for arg in args: |
338 | self.log.debug(" %s" % arg) | |
eed405de | 339 | |
72364063 MT |
340 | def info(self): |
341 | return rrdtool.info(self.file) | |
342 | ||
8ee5a71a MT |
343 | def last_update(self): |
344 | """ | |
345 | Returns a dictionary with the timestamp and | |
346 | data set of the last database update. | |
347 | """ | |
348 | return { | |
349 | "dataset" : self.last_dataset, | |
350 | "timestamp" : self.last_updated, | |
351 | } | |
352 | ||
353 | def _last_update(self): | |
354 | return rrdtool.lastupdate(self.file) | |
355 | ||
356 | @property | |
357 | def last_updated(self): | |
358 | """ | |
359 | Returns the timestamp when this database was last updated | |
360 | """ | |
361 | lu = self._last_update() | |
362 | ||
363 | if lu: | |
364 | return lu.get("date") | |
365 | ||
366 | @property | |
367 | def last_dataset(self): | |
368 | """ | |
369 | Returns the latest dataset in the database | |
370 | """ | |
371 | lu = self._last_update() | |
372 | ||
373 | if lu: | |
374 | return lu.get("ds") | |
375 | ||
72364063 MT |
376 | @property |
377 | def stepsize(self): | |
378 | return self.plugin.interval | |
379 | ||
380 | @property | |
381 | def heartbeat(self): | |
382 | return self.stepsize * 2 | |
383 | ||
965a9c51 MT |
384 | def get_rrd_schema(self): |
385 | schema = [ | |
386 | "--step", "%s" % self.stepsize, | |
387 | ] | |
388 | for line in self.rrd_schema: | |
389 | if line.startswith("DS:"): | |
390 | try: | |
391 | (prefix, name, type, lower_limit, upper_limit) = line.split(":") | |
392 | ||
393 | line = ":".join(( | |
394 | prefix, | |
395 | name, | |
396 | type, | |
881751ed | 397 | "%s" % self.heartbeat, |
965a9c51 MT |
398 | lower_limit, |
399 | upper_limit | |
400 | )) | |
401 | except ValueError: | |
402 | pass | |
403 | ||
404 | schema.append(line) | |
405 | ||
406 | xff = 0.1 | |
407 | ||
418174a4 MT |
408 | for steps, rows in self.rra_timespans: |
409 | for type in self.rra_types: | |
410 | schema.append("RRA:%s:%s:%s:%s" % (type, xff, steps, rows)) | |
965a9c51 MT |
411 | |
412 | return schema | |
413 | ||
e0437caa MT |
414 | @property |
415 | def rrd_schema_names(self): | |
416 | ret = [] | |
cd8bba0b MT |
417 | |
418 | for line in self.rrd_schema: | |
e0437caa MT |
419 | (prefix, name, type, lower_limit, upper_limit) = line.split(":") |
420 | ret.append(name) | |
421 | ||
422 | return ret | |
423 | ||
424 | def make_rrd_defs(self, prefix=None): | |
425 | defs = [] | |
cd8bba0b | 426 | |
e0437caa | 427 | for name in self.rrd_schema_names: |
cd8bba0b MT |
428 | if prefix: |
429 | p = "%s_%s" % (prefix, name) | |
430 | else: | |
431 | p = name | |
432 | ||
433 | defs += [ | |
434 | "DEF:%s=%s:%s:AVERAGE" % (p, self.file, name), | |
435 | ] | |
436 | ||
437 | return defs | |
438 | ||
4d9ed86e MT |
439 | def get_stddev(self, interval=None): |
440 | args = self.make_rrd_defs() | |
441 | ||
442 | # Add the correct interval | |
443 | args += ["--start", util.make_interval(interval)] | |
444 | ||
445 | for name in self.rrd_schema_names: | |
446 | args += [ | |
447 | "VDEF:%s_stddev=%s,STDEV" % (name, name), | |
448 | "PRINT:%s_stddev:%%lf" % name, | |
449 | ] | |
450 | ||
451 | x, y, vals = rrdtool.graph("/dev/null", *args) | |
452 | return dict(zip(self.rrd_schema_names, vals)) | |
453 | ||
72364063 MT |
454 | def execute(self): |
455 | if self.collected: | |
456 | raise RuntimeError("This object has already collected its data") | |
eed405de | 457 | |
72364063 MT |
458 | self.collected = True |
459 | self.now = datetime.datetime.utcnow() | |
4ac0cdf0 | 460 | |
72364063 MT |
461 | # Call the collect |
462 | result = self.collect() | |
4ac0cdf0 | 463 | |
72364063 | 464 | def commit(self): |
4ac0cdf0 | 465 | """ |
72364063 | 466 | Will commit the collected data to the database. |
4ac0cdf0 | 467 | """ |
72364063 | 468 | # Make sure that the RRD database has been created |
dadb8fb0 MT |
469 | self.create() |
470 | ||
ca9b9221 MT |
471 | # Write everything to disk that is in the write queue |
472 | self.collecty.write_queue.commit_file(self.file) | |
473 | ||
b1ea4956 MT |
474 | |
475 | class GraphTemplate(object): | |
476 | # A unique name to identify this graph template. | |
477 | name = None | |
478 | ||
f181246a MT |
479 | # Headline of the graph image |
480 | graph_title = None | |
481 | ||
482 | # Vertical label of the graph | |
483 | graph_vertical_label = None | |
484 | ||
485 | # Limits | |
486 | lower_limit = None | |
487 | upper_limit = None | |
488 | ||
b1ea4956 MT |
489 | # Instructions how to create the graph. |
490 | rrd_graph = None | |
491 | ||
492 | # Extra arguments passed to rrdgraph. | |
493 | rrd_graph_args = [] | |
494 | ||
c968f6d9 MT |
495 | # Default dimensions for this graph |
496 | height = GRAPH_DEFAULT_HEIGHT | |
497 | width = GRAPH_DEFAULT_WIDTH | |
498 | ||
429ba506 | 499 | def __init__(self, plugin, object_id, locale=None, timezone=None): |
c968f6d9 MT |
500 | self.plugin = plugin |
501 | ||
429ba506 MT |
502 | # Save localisation parameters |
503 | self.locale = locales.get(locale) | |
504 | self.timezone = timezone | |
505 | ||
0308c0f3 MT |
506 | # Get all required RRD objects |
507 | self.object_id = object_id | |
508 | ||
509 | # Get the main object | |
d5d4c0e7 MT |
510 | self.objects = self.get_objects(self.object_id) |
511 | self.objects.sort() | |
0308c0f3 | 512 | |
c968f6d9 MT |
513 | def __repr__(self): |
514 | return "<%s>" % self.__class__.__name__ | |
b1ea4956 MT |
515 | |
516 | @property | |
517 | def collecty(self): | |
c968f6d9 | 518 | return self.plugin.collecty |
b1ea4956 | 519 | |
c968f6d9 MT |
520 | @property |
521 | def log(self): | |
522 | return self.plugin.log | |
523 | ||
d5d4c0e7 MT |
524 | @property |
525 | def object(self): | |
526 | """ | |
527 | Shortcut to the main object | |
528 | """ | |
529 | if len(self.objects) == 1: | |
530 | return self.objects[0] | |
531 | ||
5913a52c | 532 | def _make_command_line(self, interval, format=DEFAULT_IMAGE_FORMAT, |
edf268c7 MT |
533 | width=None, height=None, with_title=True, thumbnail=False): |
534 | args = [e for e in GRAPH_DEFAULT_ARGUMENTS] | |
c968f6d9 | 535 | |
edf268c7 MT |
536 | # Set the default dimensions |
537 | default_height, default_width = GRAPH_DEFAULT_HEIGHT, GRAPH_DEFAULT_WIDTH | |
538 | ||
539 | # A thumbnail doesn't have a legend and other labels | |
540 | if thumbnail: | |
541 | args.append("--only-graph") | |
542 | ||
543 | default_height = THUMBNAIL_DEFAULT_HEIGHT | |
544 | default_width = THUMBNAIL_DEFAULT_WIDTH | |
c968f6d9 MT |
545 | |
546 | args += [ | |
5913a52c | 547 | "--imgformat", format, |
edf268c7 MT |
548 | "--height", "%s" % (height or default_height), |
549 | "--width", "%s" % (width or default_width), | |
73db5226 | 550 | ] |
eed405de | 551 | |
c968f6d9 | 552 | args += self.rrd_graph_args |
eed405de | 553 | |
f181246a | 554 | # Graph title |
ca8a6cfa | 555 | if with_title and self.graph_title: |
f181246a MT |
556 | args += ["--title", self.graph_title] |
557 | ||
558 | # Vertical label | |
559 | if self.graph_vertical_label: | |
560 | args += ["--vertical-label", self.graph_vertical_label] | |
561 | ||
562 | if self.lower_limit is not None or self.upper_limit is not None: | |
563 | # Force to honour the set limits | |
564 | args.append("--rigid") | |
565 | ||
566 | if self.lower_limit is not None: | |
567 | args += ["--lower-limit", self.lower_limit] | |
568 | ||
569 | if self.upper_limit is not None: | |
570 | args += ["--upper-limit", self.upper_limit] | |
571 | ||
c9351f4f | 572 | # Add interval |
4d9ed86e | 573 | args += ["--start", util.make_interval(interval)] |
c968f6d9 MT |
574 | |
575 | return args | |
576 | ||
d5d4c0e7 MT |
577 | def _add_defs(self): |
578 | use_prefix = len(self.objects) >= 2 | |
579 | ||
580 | args = [] | |
581 | for object in self.objects: | |
582 | if use_prefix: | |
583 | args += object.make_rrd_defs(object.id) | |
584 | else: | |
585 | args += object.make_rrd_defs() | |
586 | ||
587 | return args | |
588 | ||
cd8bba0b MT |
589 | def _add_vdefs(self, args): |
590 | ret = [] | |
591 | ||
592 | for arg in args: | |
593 | ret.append(arg) | |
594 | ||
595 | # Search for all DEFs and CDEFs | |
596 | m = re.match(DEF_MATCH, "%s" % arg) | |
597 | if m: | |
598 | name = m.group(1) | |
599 | ||
600 | # Add the VDEFs for minimum, maximum, etc. values | |
601 | ret += [ | |
602 | "VDEF:%s_cur=%s,LAST" % (name, name), | |
603 | "VDEF:%s_avg=%s,AVERAGE" % (name, name), | |
604 | "VDEF:%s_max=%s,MAXIMUM" % (name, name), | |
605 | "VDEF:%s_min=%s,MINIMUM" % (name, name), | |
606 | ] | |
607 | ||
608 | return ret | |
609 | ||
d5d4c0e7 MT |
610 | def get_objects(self, *args, **kwargs): |
611 | object = self.plugin.get_object(*args, **kwargs) | |
0308c0f3 | 612 | |
d5d4c0e7 MT |
613 | if object: |
614 | return [object,] | |
c968f6d9 | 615 | |
d5d4c0e7 | 616 | return [] |
fc359f4d | 617 | |
429ba506 | 618 | def generate_graph(self, interval=None, **kwargs): |
d5d4c0e7 MT |
619 | assert self.objects, "Cannot render graph without any objects" |
620 | ||
ca9b9221 MT |
621 | # Make sure that all collected data is in the database |
622 | # to get a recent graph image | |
d5d4c0e7 MT |
623 | for object in self.objects: |
624 | object.commit() | |
ca9b9221 | 625 | |
c968f6d9 MT |
626 | args = self._make_command_line(interval, **kwargs) |
627 | ||
628 | self.log.info(_("Generating graph %s") % self) | |
c968f6d9 | 629 | |
d5d4c0e7 MT |
630 | rrd_graph = self.rrd_graph |
631 | ||
632 | # Add DEFs for all objects | |
633 | if not any((e.startswith("DEF:") for e in rrd_graph)): | |
634 | args += self._add_defs() | |
eed405de | 635 | |
d5d4c0e7 | 636 | args += rrd_graph |
cd8bba0b | 637 | args = self._add_vdefs(args) |
0308c0f3 | 638 | |
699e99fb | 639 | # Convert arguments to string |
5913a52c MT |
640 | args = [str(e) for e in args] |
641 | ||
cd8bba0b MT |
642 | for arg in args: |
643 | self.log.debug(" %s" % arg) | |
644 | ||
429ba506 | 645 | with Environment(self.timezone, self.locale.lang): |
cb1ccb4f | 646 | graph = rrdtool.graphv("-", *args) |
c968f6d9 | 647 | |
a3864812 MT |
648 | return { |
649 | "image" : graph.get("image"), | |
650 | "image_height" : graph.get("image_height"), | |
651 | "image_width" : graph.get("image_width"), | |
652 | } | |
653 | ||
654 | def graph_info(self): | |
655 | """ | |
656 | Returns a dictionary with useful information | |
657 | about this graph. | |
658 | """ | |
659 | return { | |
660 | "title" : self.graph_title, | |
661 | "object_id" : self.object_id or "", | |
662 | "template" : self.name, | |
663 | } |