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1 | #!/usr/bin/python3 | |
2 | ||
3 | import serial | |
4 | ||
5 | import re | |
6 | from time import sleep | |
7 | import sys | |
8 | ||
9 | import libvirt | |
10 | ||
11 | import xml.etree.ElementTree as ET | |
12 | ||
13 | import os | |
14 | ||
15 | import configparser | |
16 | ||
17 | class log(): | |
18 | def __init__(self, log_level): | |
19 | self.log_level = log_level | |
20 | ||
21 | def debug(self, string): | |
22 | if self.log_level >= 4: | |
23 | print("DEBUG: {}".format(string)) | |
24 | ||
25 | def error(self, string): | |
26 | print("ERROR: {}".format(string)) | |
27 | ||
28 | class libvirt_con(): | |
29 | def __init__(self, uri): | |
30 | self.log = log(4) | |
31 | self.uri = uri | |
32 | self.connection = None | |
33 | ||
34 | def get_domain_from_name(self, name): | |
35 | dom = self.con.lookupByName(name) | |
36 | ||
37 | if dom == None: | |
38 | raise BaseException | |
39 | return dom | |
40 | ||
41 | @property | |
42 | def con(self): | |
43 | if self.connection == None: | |
44 | try: | |
45 | self.connection = libvirt.open(self.uri) | |
46 | except BaseException as error: | |
47 | self.log.error("Could not connect to: {}".format(self.uri)) | |
48 | ||
49 | self.log.debug("Connected to: {}".format(self.uri)) | |
50 | return self.connection | |
51 | ||
52 | return self.connection | |
53 | ||
54 | ||
55 | class vm(): | |
56 | def __init__(self, vm_xml_file, snapshot_xml_file, image, root_uid, username, password): | |
57 | self.log = log(4) | |
58 | self.con = libvirt_con("qemu:///system") | |
59 | try: | |
60 | with open(vm_xml_file) as fobj: | |
61 | self.vm_xml = fobj.read() | |
62 | except FileNotFoundError as error: | |
63 | self.log.error("No such file: {}".format(vm_xml_file)) | |
64 | ||
65 | try: | |
66 | with open(snapshot_xml_file) as fobj: | |
67 | self.snapshot_xml = fobj.read() | |
68 | except FileNotFoundError as error: | |
69 | self.log.error("No such file: {}".format(snapshot_xml_file)) | |
70 | ||
71 | self.image = image | |
72 | ||
73 | if not os.path.isfile(self.image): | |
74 | self.log.error("No such file: {}".format(self.image)) | |
75 | ||
76 | self.root_uid = root_uid | |
77 | ||
78 | self.username = username | |
79 | self.password = password | |
80 | ||
81 | def define(self): | |
82 | self.dom = self.con.con.defineXML(self.vm_xml) | |
83 | if self.dom == None: | |
84 | self.log.error("Could not define VM") | |
85 | raise BaseException | |
86 | ||
87 | def start(self): | |
88 | if self.dom.create() < 0: | |
89 | self.log.error("Could not start VM") | |
90 | raise BaseException | |
91 | ||
92 | def shutdown(self): | |
93 | if self.is_running(): | |
94 | if self.dom.shutdown() < 0: | |
95 | self.log.error("Could not shutdown VM") | |
96 | raise BaseException | |
97 | else: | |
98 | self.log.error("Domain is not running") | |
99 | ||
100 | def undefine(self): | |
101 | self.dom.undefine() | |
102 | ||
103 | def create_snapshot(self): | |
104 | ||
105 | self.snapshot = self.dom.snapshotCreateXML(self.snapshot_xml) | |
106 | ||
107 | if not self.snapshot: | |
108 | self.log.error("Could not create snapshot") | |
109 | raise BaseException | |
110 | ||
111 | def revert_snapshot(self): | |
112 | self.dom.revertToSnapshot(self.snapshot) | |
113 | self.snapshot.delete() | |
114 | ||
115 | def is_running(self): | |
116 | ||
117 | state, reason = self.dom.state() | |
118 | ||
119 | if state == libvirt.VIR_DOMAIN_RUNNING: | |
120 | return True | |
121 | else: | |
122 | return False | |
123 | ||
124 | def get_serial_device(self): | |
125 | ||
126 | if not self.is_running(): | |
127 | raise BaseException | |
128 | ||
129 | xml_root = ET.fromstring(self.dom.XMLDesc(0)) | |
130 | ||
131 | elem = xml_root.find("./devices/serial/source") | |
132 | return elem.get("path") | |
133 | ||
134 | def check_is_booted_up(self): | |
135 | serial_con = connection(self.get_serial_device()) | |
136 | ||
137 | serial_con.write("\n") | |
138 | # This will block till the domain is booted up | |
139 | serial_con.read(1) | |
140 | ||
141 | #serial_con.close() | |
142 | ||
143 | def login(self): | |
144 | try: | |
145 | self.serial_con = connection(self.get_serial_device(), username=self.username) | |
146 | self.serial_con.login(self.password) | |
147 | except BaseException as e: | |
148 | self.log.error("Could not connect to the domain via serial console") | |
149 | ||
150 | def cmd(self, cmd): | |
151 | return self.serial_con.command(cmd) | |
152 | ||
153 | ||
154 | class connection(): | |
155 | def __init__(self, device, username=None): | |
156 | self.buffer = b"" | |
157 | self.back_at_prompt_pattern = None | |
158 | self.username = username | |
159 | self.log = log(1) | |
160 | self.con = serial.Serial(device) | |
161 | ||
162 | def read(self, size=1): | |
163 | if len(self.buffer) >= size: | |
164 | # throw away first size bytes in buffer | |
165 | data = self.buffer[:size] | |
166 | # Set the buffer to the non used bytes | |
167 | self.buffer = self.buffer[size:] | |
168 | return data | |
169 | else: | |
170 | data = self.buffer | |
171 | # Set the size to the value we have to read now | |
172 | size = size - len(self.buffer) | |
173 | # Set the buffer empty | |
174 | self.buffer = b"" | |
175 | return data + self.con.read(size) | |
176 | ||
177 | def peek(self, size=1): | |
178 | if len(self.buffer) <= size: | |
179 | self.buffer += self.con.read(size=size - len(self.buffer)) | |
180 | ||
181 | return self.buffer[:size] | |
182 | ||
183 | def readline(self): | |
184 | self.log.debug(self.buffer) | |
185 | self.buffer = self.buffer + self.con.read(self.con.in_waiting) | |
186 | if b"\n" in self.buffer: | |
187 | size = self.buffer.index(b"\n") + 1 | |
188 | self.log.debug("We have a whole line in the buffer") | |
189 | self.log.debug(self.buffer) | |
190 | self.log.debug("We split at {}".format(size)) | |
191 | data = self.buffer[:size] | |
192 | self.buffer = self.buffer[size:] | |
193 | self.log.debug(data) | |
194 | self.log.debug(self.buffer) | |
195 | return data | |
196 | ||
197 | data = self.buffer | |
198 | self.buffer = b"" | |
199 | return data + self.con.readline() | |
200 | ||
201 | def back_at_prompt(self): | |
202 | data = self.peek() | |
203 | if not data == b"[": | |
204 | return False | |
205 | ||
206 | # We need to use self.in_waiting because with self.con.in_waiting we get | |
207 | # not the complete string | |
208 | size = len(self.buffer) + self.in_waiting | |
209 | data = self.peek(size) | |
210 | ||
211 | ||
212 | if self.back_at_prompt_pattern == None: | |
213 | #self.back_at_prompt_pattern = r"^\[{}@.+\]#".format(self.username) | |
214 | self.back_at_prompt_pattern = re.compile(r"^\[{}@.+\]#".format(self.username), re.MULTILINE) | |
215 | ||
216 | if self.back_at_prompt_pattern.search(data.decode()): | |
217 | return True | |
218 | else: | |
219 | return False | |
220 | ||
221 | def log_console_line(self, line): | |
222 | self.log.debug("Get in function log_console_line()") | |
223 | sys.stdout.write(line) | |
224 | ||
225 | @property | |
226 | def in_waiting(self): | |
227 | in_waiting_before = 0 | |
228 | sleep(0.5) | |
229 | ||
230 | while in_waiting_before != self.con.in_waiting: | |
231 | in_waiting_before = self.con.in_waiting | |
232 | sleep(0.5) | |
233 | ||
234 | return self.con.in_waiting | |
235 | ||
236 | ||
237 | def readline2(self, pattern=None): | |
238 | string = "" | |
239 | string2 = b"" | |
240 | if pattern: | |
241 | pattern = re.compile(pattern) | |
242 | ||
243 | while 1: | |
244 | char = self.con.read(1) | |
245 | string = string + char.decode("utf-8") | |
246 | string2 = string2 + char | |
247 | #print(char) | |
248 | print(char.decode("utf-8"), end="") | |
249 | ||
250 | #print(string2) | |
251 | if pattern and pattern.match(string): | |
252 | #print("get here1") | |
253 | #print(string2) | |
254 | return {"string" : string, "return-code" : 1} | |
255 | ||
256 | if char == b"\n": | |
257 | #print(char) | |
258 | #print(string2) | |
259 | #print("get here2") | |
260 | return {"return-code" : 0} | |
261 | ||
262 | def check_logged_in(self, username): | |
263 | pattern = "^\[" + username + "@.+\]#" | |
264 | data = self.readline(pattern=pattern) | |
265 | if data["return-code"] == 1: | |
266 | print("We are logged in") | |
267 | return True | |
268 | else: | |
269 | print("We are not logged in") | |
270 | return False | |
271 | ||
272 | def login(self, password): | |
273 | if self.username == None: | |
274 | self.log.error("Username cannot be blank") | |
275 | return False | |
276 | ||
277 | # Hit enter to see what we get | |
278 | self.con.write(b'\n') | |
279 | # We get two new lines \r\n ? | |
280 | data = self.readline() | |
281 | self.log_console_line(data.decode()) | |
282 | ||
283 | ||
284 | if self.back_at_prompt(): | |
285 | self.log.debug("We are already logged in.") | |
286 | return True | |
287 | ||
288 | # Read all line till we get login: | |
289 | while 1: | |
290 | data = self.peek() | |
291 | if not data.decode() == "l": | |
292 | self.log.debug("We get no l at the start") | |
293 | self.log_console_line(self.readline().decode()) | |
294 | ||
295 | # We need to use self.in_waiting because with self.con.in_waiting we get | |
296 | # not the complete string | |
297 | size = len(self.buffer) + self.in_waiting | |
298 | data = self.peek(size) | |
299 | ||
300 | pattern = r"^.*login: " | |
301 | pattern = re.compile(pattern) | |
302 | ||
303 | if pattern.search(data.decode()): | |
304 | break | |
305 | else: | |
306 | self.log.debug("The pattern does not match") | |
307 | self.log_console_line(self.readline().decode()) | |
308 | ||
309 | # We can login | |
310 | string = "{}\n".format(self.username) | |
311 | self.con.write(string.encode()) | |
312 | self.con.flush() | |
313 | # read the login out of the buffer | |
314 | data = self.readline() | |
315 | self.log.debug("This is the login:{}".format(data)) | |
316 | self.log_console_line(data.decode()) | |
317 | ||
318 | # We need to wait her till we get the full string "Password:" | |
319 | #This is useless but self.in_waiting will wait the correct amount of time | |
320 | size = self.in_waiting | |
321 | ||
322 | string = "{}\n".format(password) | |
323 | self.con.write(string.encode()) | |
324 | self.con.flush() | |
325 | # Print the 'Password:' line | |
326 | data = self.readline() | |
327 | self.log_console_line(data.decode()) | |
328 | ||
329 | while not self.back_at_prompt(): | |
330 | # This will fail if the login failed so we need to look for the failed keyword | |
331 | data = self.readline() | |
332 | self.log_console_line(data.decode()) | |
333 | ||
334 | return True | |
335 | ||
336 | def write(self, string): | |
337 | self.log.debug(string) | |
338 | self.con.write(string.encode()) | |
339 | self.con.flush() | |
340 | ||
341 | def command(self, command): | |
342 | self.write("{}\n".format(command)) | |
343 | ||
344 | # We need to read out the prompt for this command first | |
345 | # If we do not do this we will break the loop immediately | |
346 | # because the prompt for this command is still in the buffer | |
347 | data = self.readline() | |
348 | self.log_console_line(data.decode()) | |
349 | ||
350 | while not self.back_at_prompt(): | |
351 | data = self.readline() | |
352 | self.log_console_line(data.decode()) | |
353 | ||
354 | ||
355 | # A class which define and undefine a virtual network based on an xml file | |
356 | class network(): | |
357 | def __init__(self, network_xml_file): | |
358 | self.log = log(4) | |
359 | self.con = libvirt_con("qemu:///system") | |
360 | try: | |
361 | with open(network_xml_file) as fobj: | |
362 | self.network_xml = fobj.read() | |
363 | except FileNotFoundError as error: | |
364 | self.log.error("No such file: {}".format(vm_xml_file)) | |
365 | ||
366 | def define(self): | |
367 | self.network = self.con.con.networkDefineXML(self.network_xml) | |
368 | ||
369 | if network == None: | |
370 | self.log.error("Failed to define virtual network") | |
371 | ||
372 | def start(self): | |
373 | self.network.create() | |
374 | ||
375 | def undefine(self): | |
376 | self.network.destroy() | |
377 | ||
378 | ||
379 | ||
380 | class RecipeExeption(Exception): | |
381 | pass | |
382 | ||
383 | ||
384 | ||
385 | # Should read the test, check if the syntax are valid | |
386 | # and return tuples with the ( host, command ) structure | |
387 | class recipe(): | |
388 | def __init__(self, path): | |
389 | self.log = log(4) | |
390 | self.recipe_file = path | |
391 | self._recipe = None | |
392 | ||
393 | if not os.path.isfile(self.recipe_file): | |
394 | self.log.error("No such file: {}".format(self.recipe_file)) | |
395 | ||
396 | try: | |
397 | with open(self.recipe_file) as fobj: | |
398 | self.raw_recipe = fobj.readlines() | |
399 | except FileNotFoundError as error: | |
400 | self.log.error("No such file: {}".format(vm_xml_file)) | |
401 | ||
402 | @property | |
403 | def recipe(self): | |
404 | if not self._recipe: | |
405 | self.parse() | |
406 | ||
407 | return self._recipe | |
408 | ||
409 | def parse(self): | |
410 | self._recipe = [] | |
411 | i = 1 | |
412 | for line in self.raw_recipe: | |
413 | raw_line = line.split(":") | |
414 | if len(raw_line) < 2: | |
415 | self.log.error("Error parsing the recipe in line {}".format(i)) | |
416 | raise RecipeExeption | |
417 | cmd = raw_line[1] | |
418 | raw_line = raw_line[0].strip().split(" ") | |
419 | if len(raw_line) == 0: | |
420 | self.log.error("Failed to parse the recipe in line {}".format(i)) | |
421 | raise RecipeExeption | |
422 | elif len(raw_line) == 1: | |
423 | if raw_line[0] == "": | |
424 | self.log.error("Failed to parse the recipe in line {}".format(i)) | |
425 | raise RecipeExeption | |
426 | machine = raw_line[0] | |
427 | extra = "" | |
428 | elif len(raw_line) == 2: | |
429 | machine = raw_line[0] | |
430 | extra = raw_line[1] | |
431 | ||
432 | self._recipe.append((machine.strip(), extra.strip(), cmd.strip())) | |
433 | i = i + 1 | |
434 | ||
435 | ||
436 | class test(): | |
437 | def __init__(self, path): | |
438 | self.log = log(4) | |
439 | try: | |
440 | self.path = os.path.abspath(path) | |
441 | except BaseException as e: | |
442 | self.log.error("Could not get absolute path") | |
443 | ||
444 | self.log.debug(self.path) | |
445 | ||
446 | self.settings_file = "{}/settings".format(self.path) | |
447 | if not os.path.isfile(self.settings_file): | |
448 | self.log.error("No such file: {}".format(self.settings_file)) | |
449 | ||
450 | self.recipe_file = "{}/recipe".format(self.path) | |
451 | if not os.path.isfile(self.recipe_file): | |
452 | self.log.error("No such file: {}".format(self.recipe_file)) | |
453 | ||
454 | def read_settings(self): | |
455 | self.config = configparser.ConfigParser() | |
456 | self.config.read(self.settings_file) | |
457 | self.name = self.config["DEFAULT"]["Name"] | |
458 | self.description = self.config["DEFAULT"]["Description"] | |
459 | ||
460 | self.virtual_environ_name = self.config["VIRTUAL_ENVIRONMENT"]["Name"] | |
461 | self.virtual_environ_path = self.config["VIRTUAL_ENVIRONMENT"]["Path"] | |
462 | self.virtual_environ_path = os.path.normpath(self.path + "/" + self.virtual_environ_path) | |
463 | ||
464 | def virtual_environ_setup(self): | |
465 | self.virtual_environ = virtual_environ(self.virtual_environ_path) | |
466 | ||
467 | self.virtual_networks = self.virtual_environ.get_networks() | |
468 | ||
469 | self.virtual_machines = self.virtual_environ.get_machines() | |
470 | ||
471 | def virtual_environ_start(self): | |
472 | for name in self.virtual_environ.network_names: | |
473 | self.virtual_networks[name].define() | |
474 | self.virtual_networks[name].start() | |
475 | ||
476 | for name in self.virtual_environ.machine_names: | |
477 | self.virtual_machines[name].define() | |
478 | self.virtual_machines[name].create_snapshot() | |
479 | self.virtual_machines[name].start() | |
480 | ||
481 | self.log.debug("Try to login on all machines") | |
482 | for name in self.virtual_environ.machine_names: | |
483 | self.virtual_machines[name].login() | |
484 | ||
485 | def load_recipe(self): | |
486 | try: | |
487 | self.recipe = recipe(self.recipe_file) | |
488 | except BaseException: | |
489 | self.log.error("Failed to load recipe") | |
490 | exit(1) | |
491 | ||
492 | def run_recipe(self): | |
493 | for line in self.recipe.recipe: | |
494 | return_value = self.virtual_machines[line[0]].cmd(line[2]) | |
495 | if not return_value and line[1] == "": | |
496 | self.log.error("Failed to execute command '{}' on {}".format(line[2],line[0])) | |
497 | return False | |
498 | elif return_value == True and line[1] == "!": | |
499 | self.log.error("Succeded to execute command '{}' on {}".format(line[2],line[0])) | |
500 | return False | |
501 | ||
502 | def virtual_environ_stop(self): | |
503 | for name in self.virtual_environ.machine_names: | |
504 | self.virtual_machines[name].shutdown() | |
505 | self.virtual_machines[name].revert_snapshot() | |
506 | self.virtual_machines[name].undefine() | |
507 | ||
508 | for name in self.virtual_environ.network_names: | |
509 | self.virtual_networks[name].undefine() | |
510 | ||
511 | ||
512 | # Should return all vms and networks in a list | |
513 | # and should provide the path to the necessary xml files | |
514 | class virtual_environ(): | |
515 | def __init__(self, path): | |
516 | self.log = log(4) | |
517 | try: | |
518 | self.path = os.path.abspath(path) | |
519 | except BaseException as e: | |
520 | self.log.error("Could not get absolute path") | |
521 | ||
522 | self.log.debug(self.path) | |
523 | ||
524 | self.settings_file = "{}/settings".format(self.path) | |
525 | if not os.path.isfile(self.settings_file): | |
526 | self.log.error("No such file: {}".format(self.settings_file)) | |
527 | ||
528 | self.log.debug(self.settings_file) | |
529 | self.config = configparser.ConfigParser() | |
530 | self.config.read(self.settings_file) | |
531 | self.name = self.config["DEFAULT"]["name"] | |
532 | self.machines_string = self.config["DEFAULT"]["machines"] | |
533 | self.networks_string = self.config["DEFAULT"]["networks"] | |
534 | ||
535 | self.machines = [] | |
536 | for machine in self.machines_string.split(","): | |
537 | self.machines.append(machine.strip()) | |
538 | ||
539 | self.networks = [] | |
540 | for network in self.networks_string.split(","): | |
541 | self.networks.append(network.strip()) | |
542 | ||
543 | self.log.debug(self.machines) | |
544 | self.log.debug(self.networks) | |
545 | ||
546 | def get_networks(self): | |
547 | networks = {} | |
548 | for _network in self.networks: | |
549 | self.log.debug(_network) | |
550 | networks.setdefault(_network, network(os.path.normpath(self.path + "/" + self.config[_network]["xml_file"]))) | |
551 | return networks | |
552 | ||
553 | def get_machines(self): | |
554 | machines = {} | |
555 | for _machine in self.machines: | |
556 | self.log.debug(_machine) | |
557 | machines.setdefault(_machine, vm( | |
558 | os.path.normpath(self.path + "/" + self.config[_machine]["xml_file"]), | |
559 | os.path.normpath(self.path + "/" + self.config[_machine]["snapshot_xml_file"]))) | |
560 | ||
561 | return machines | |
562 | ||
563 | ||
564 | if __name__ == "__main__": | |
565 | import argparse | |
566 | ||
567 | parser = argparse.ArgumentParser() | |
568 | ||
569 | parser.add_argument("-d", "--directory", dest="dir") | |
570 | ||
571 | args = parser.parse_args() | |
572 | ||
573 | _recipe = recipe("/home/jonatan/python-testing-kvm/test/recipe") | |
574 | currenttest = test(args.dir) | |
575 | currenttest.read_settings() | |
576 | currenttest.virtual_environ_setup() |