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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 inspect | |
14 | import os | |
15 | ||
16 | import configparser | |
17 | ||
18 | class log(): | |
19 | def __init__(self, log_level): | |
20 | self.log_level = log_level | |
21 | ||
22 | def debug(self, string): | |
23 | if self.log_level >= 4: | |
24 | print("DEBUG: {}".format(string)) | |
25 | ||
26 | def error(self, string): | |
27 | print("ERROR: {}".format(string)) | |
28 | ||
29 | class libvirt_con(): | |
30 | def __init__(self, uri): | |
31 | self.log = log(4) | |
32 | self.uri = uri | |
33 | self.connection = None | |
34 | ||
35 | def get_domain_from_name(self, name): | |
36 | dom = self.con.lookupByName(name) | |
37 | ||
38 | if dom == None: | |
39 | raise BaseException | |
40 | return dom | |
41 | ||
42 | @property | |
43 | def con(self): | |
44 | if self.connection == None: | |
45 | try: | |
46 | self.connection = libvirt.open(self.uri) | |
47 | except BaseException as error: | |
48 | self.log.error("Could not connect to: {}".format(self.uri)) | |
49 | ||
50 | self.log.debug("Connected to: {}".format(self.uri)) | |
51 | return self.connection | |
52 | ||
53 | return self.connection | |
54 | ||
55 | ||
56 | class vm(): | |
57 | def __init__(self, vm_xml_file, snapshot_xml_file, image, root_uid): | |
58 | self.log = log(4) | |
59 | self.con = libvirt_con("qemu:///system") | |
60 | try: | |
61 | with open(vm_xml_file) as fobj: | |
62 | self.vm_xml = fobj.read() | |
63 | except FileNotFoundError as error: | |
64 | self.log.error("No such file: {}".format(vm_xml_file)) | |
65 | ||
66 | try: | |
67 | with open(snapshot_xml_file) as fobj: | |
68 | self.snapshot_xml = fobj.read() | |
69 | except FileNotFoundError as error: | |
70 | self.log.error("No such file: {}".format(snapshot_xml_file)) | |
71 | ||
72 | self.image = image | |
73 | ||
74 | if not os.path.isfile(self.image): | |
75 | self.log.error("No such file: {}".format(self.settings_file)) | |
76 | ||
77 | self.root_uid = root_uid | |
78 | ||
79 | def define(self): | |
80 | self.dom = self.con.con.defineXML(self.vm_xml) | |
81 | if self.dom == None: | |
82 | self.log.error("Could not define VM") | |
83 | raise BaseException | |
84 | ||
85 | def start(self): | |
86 | if self.dom.create() < 0: | |
87 | self.log.error("Could not start VM") | |
88 | raise BaseException | |
89 | ||
90 | def shutdown(self): | |
91 | if self.is_running(): | |
92 | if self.dom.shutdown() < 0: | |
93 | self.log.error("Could not shutdown VM") | |
94 | raise BaseException | |
95 | else: | |
96 | self.log.error("Domain is not running") | |
97 | ||
98 | def undefine(self): | |
99 | self.dom.undefine() | |
100 | ||
101 | def create_snapshot(self): | |
102 | ||
103 | self.snapshot = self.dom.snapshotCreateXML(self.snapshot_xml) | |
104 | ||
105 | if not self.snapshot: | |
106 | self.log.error("Could not create snapshot") | |
107 | raise BaseException | |
108 | ||
109 | def revert_snapshot(self): | |
110 | print(inspect.getmembers(self.dom, predicate=inspect.ismethod)) | |
111 | self.dom.revertToSnapshot(self.snapshot) | |
112 | #self.dom.SnapshotDelete(self.snapshot) | |
113 | ||
114 | def is_running(self): | |
115 | ||
116 | state, reason = self.dom.state() | |
117 | ||
118 | if state == libvirt.VIR_DOMAIN_RUNNING: | |
119 | return True | |
120 | else: | |
121 | return False | |
122 | ||
123 | def get_serial_device(self): | |
124 | ||
125 | if not self.is_running(): | |
126 | raise BaseException | |
127 | ||
128 | xml_root = ET.fromstring(self.dom.XMLDesc(0)) | |
129 | ||
130 | elem = xml_root.find("./devices/serial/source") | |
131 | return elem.get("path") | |
132 | ||
133 | def check_is_booted_up(self): | |
134 | serial_con = connection(self.get_serial_device()) | |
135 | ||
136 | serial_con.write("\n") | |
137 | # This will block till the domain is booted up | |
138 | serial_con.read(1) | |
139 | ||
140 | #serial_con.close() | |
141 | ||
142 | def login(self, username, password): | |
143 | try: | |
144 | self.serial_con = connection(self.get_serial_device(), username="root") | |
145 | self.serial_con.login("25814@root") | |
146 | except BaseException as e: | |
147 | self.log.error("Could not connect to the domain via serial console") | |
148 | ||
149 | def cmd(self, cmd): | |
150 | return self.serial_con.command(cmd) | |
151 | ||
152 | ||
153 | class connection(): | |
154 | def __init__(self, device, username=None): | |
155 | self.buffer = b"" | |
156 | self.back_at_prompt_pattern = None | |
157 | self.username = username | |
158 | self.log = log(1) | |
159 | self.con = serial.Serial(device) | |
160 | ||
161 | def read(self, size=1): | |
162 | if len(self.buffer) >= size: | |
163 | # throw away first size bytes in buffer | |
164 | data = self.buffer[:size] | |
165 | # Set the buffer to the non used bytes | |
166 | self.buffer = self.buffer[size:] | |
167 | return data | |
168 | else: | |
169 | data = self.buffer | |
170 | # Set the size to the value we have to read now | |
171 | size = size - len(self.buffer) | |
172 | # Set the buffer empty | |
173 | self.buffer = b"" | |
174 | return data + self.con.read(size) | |
175 | ||
176 | def peek(self, size=1): | |
177 | if len(self.buffer) <= size: | |
178 | self.buffer += self.con.read(size=size - len(self.buffer)) | |
179 | ||
180 | return self.buffer[:size] | |
181 | ||
182 | def readline(self): | |
183 | self.log.debug(self.buffer) | |
184 | self.buffer = self.buffer + self.con.read(self.con.in_waiting) | |
185 | if b"\n" in self.buffer: | |
186 | size = self.buffer.index(b"\n") + 1 | |
187 | self.log.debug("We have a whole line in the buffer") | |
188 | self.log.debug(self.buffer) | |
189 | self.log.debug("We split at {}".format(size)) | |
190 | data = self.buffer[:size] | |
191 | self.buffer = self.buffer[size:] | |
192 | self.log.debug(data) | |
193 | self.log.debug(self.buffer) | |
194 | return data | |
195 | ||
196 | data = self.buffer | |
197 | self.buffer = b"" | |
198 | return data + self.con.readline() | |
199 | ||
200 | def back_at_prompt(self): | |
201 | data = self.peek() | |
202 | if not data == b"[": | |
203 | return False | |
204 | ||
205 | # We need to use self.in_waiting because with self.con.in_waiting we get | |
206 | # not the complete string | |
207 | size = len(self.buffer) + self.in_waiting | |
208 | data = self.peek(size) | |
209 | ||
210 | ||
211 | if self.back_at_prompt_pattern == None: | |
212 | #self.back_at_prompt_pattern = r"^\[{}@.+\]#".format(self.username) | |
213 | self.back_at_prompt_pattern = re.compile(r"^\[{}@.+\]#".format(self.username), re.MULTILINE) | |
214 | ||
215 | if self.back_at_prompt_pattern.search(data.decode()): | |
216 | return True | |
217 | else: | |
218 | return False | |
219 | ||
220 | def log_console_line(self, line): | |
221 | self.log.debug("Get in function log_console_line()") | |
222 | sys.stdout.write(line) | |
223 | ||
224 | @property | |
225 | def in_waiting(self): | |
226 | in_waiting_before = 0 | |
227 | sleep(0.5) | |
228 | ||
229 | while in_waiting_before != self.con.in_waiting: | |
230 | in_waiting_before = self.con.in_waiting | |
231 | sleep(0.5) | |
232 | ||
233 | return self.con.in_waiting | |
234 | ||
235 | ||
236 | def readline2(self, pattern=None): | |
237 | string = "" | |
238 | string2 = b"" | |
239 | if pattern: | |
240 | pattern = re.compile(pattern) | |
241 | ||
242 | while 1: | |
243 | char = self.con.read(1) | |
244 | string = string + char.decode("utf-8") | |
245 | string2 = string2 + char | |
246 | #print(char) | |
247 | print(char.decode("utf-8"), end="") | |
248 | ||
249 | #print(string2) | |
250 | if pattern and pattern.match(string): | |
251 | #print("get here1") | |
252 | #print(string2) | |
253 | return {"string" : string, "return-code" : 1} | |
254 | ||
255 | if char == b"\n": | |
256 | #print(char) | |
257 | #print(string2) | |
258 | #print("get here2") | |
259 | return {"return-code" : 0} | |
260 | ||
261 | def check_logged_in(self, username): | |
262 | pattern = "^\[" + username + "@.+\]#" | |
263 | data = self.readline(pattern=pattern) | |
264 | if data["return-code"] == 1: | |
265 | print("We are logged in") | |
266 | return True | |
267 | else: | |
268 | print("We are not logged in") | |
269 | return False | |
270 | ||
271 | def login(self, password): | |
272 | if self.username == None: | |
273 | self.log.error("Username cannot be blank") | |
274 | return False | |
275 | ||
276 | # Hit enter to see what we get | |
277 | self.con.write(b'\n') | |
278 | # We get two new lines \r\n ? | |
279 | data = self.readline() | |
280 | self.log_console_line(data.decode()) | |
281 | ||
282 | ||
283 | if self.back_at_prompt(): | |
284 | self.log.debug("We are already logged in.") | |
285 | return True | |
286 | ||
287 | # Read all line till we get login: | |
288 | while 1: | |
289 | data = self.peek() | |
290 | if not data.decode() == "l": | |
291 | self.log.debug("We get no l at the start") | |
292 | self.log_console_line(self.readline().decode()) | |
293 | ||
294 | # We need to use self.in_waiting because with self.con.in_waiting we get | |
295 | # not the complete string | |
296 | size = len(self.buffer) + self.in_waiting | |
297 | data = self.peek(size) | |
298 | ||
299 | pattern = r"^.*login: " | |
300 | pattern = re.compile(pattern) | |
301 | ||
302 | if pattern.search(data.decode()): | |
303 | break | |
304 | else: | |
305 | self.log.debug("The pattern does not match") | |
306 | self.log_console_line(self.readline().decode()) | |
307 | ||
308 | # We can login | |
309 | string = "{}\n".format(self.username) | |
310 | self.con.write(string.encode()) | |
311 | self.con.flush() | |
312 | # read the login out of the buffer | |
313 | data = self.readline() | |
314 | self.log.debug("This is the login:{}".format(data)) | |
315 | self.log_console_line(data.decode()) | |
316 | ||
317 | # We need to wait her till we get the full string "Password:" | |
318 | #This is useless but self.in_waiting will wait the correct amount of time | |
319 | size = self.in_waiting | |
320 | ||
321 | string = "{}\n".format(password) | |
322 | self.con.write(string.encode()) | |
323 | self.con.flush() | |
324 | # Print the 'Password:' line | |
325 | data = self.readline() | |
326 | self.log_console_line(data.decode()) | |
327 | ||
328 | while not self.back_at_prompt(): | |
329 | # This will fail if the login failed so we need to look for the failed keyword | |
330 | data = self.readline() | |
331 | self.log_console_line(data.decode()) | |
332 | ||
333 | return True | |
334 | ||
335 | def write(self, string): | |
336 | self.log.debug(string) | |
337 | self.con.write(string.encode()) | |
338 | self.con.flush() | |
339 | ||
340 | def command(self, command): | |
341 | self.write("{}\n".format(command)) | |
342 | ||
343 | # We need to read out the prompt for this command first | |
344 | # If we do not do this we will break the loop immediately | |
345 | # because the prompt for this command is still in the buffer | |
346 | data = self.readline() | |
347 | self.log_console_line(data.decode()) | |
348 | ||
349 | while not self.back_at_prompt(): | |
350 | data = self.readline() | |
351 | self.log_console_line(data.decode()) | |
352 | ||
353 | ||
354 | # A class which define and undefine a virtual network based on an xml file | |
355 | class network(): | |
356 | def __init__(self, path): | |
357 | self.log = log(4) | |
358 | self.log.debug("Path is: {}".format(path)) | |
359 | ||
360 | # Should read the test, check if the syntax are valid | |
361 | # and return tuples with the ( host, command ) structure | |
362 | class recipe(): | |
363 | def __init__(self, path): | |
364 | self.log = log(4) | |
365 | self.recipe_file = path | |
366 | if not os.path.isfile(self.recipe_file): | |
367 | self.log.error("No such file: {}".format(self.recipe_file)) | |
368 | ||
369 | try: | |
370 | with open(self.recipe_file) as fobj: | |
371 | self.raw_recipe = fobj.readlines() | |
372 | except FileNotFoundError as error: | |
373 | self.log.error("No such file: {}".format(vm_xml_file)) | |
374 | ||
375 | for line in self.raw_recipe: | |
376 | print(line) | |
377 | ||
378 | ||
379 | class test(): | |
380 | def __init__(self, path): | |
381 | self.log = log(4) | |
382 | try: | |
383 | self.path = os.path.abspath(path) | |
384 | except BaseException as e: | |
385 | self.log.error("Could not get absolute path") | |
386 | ||
387 | self.log.debug(self.path) | |
388 | ||
389 | self.settings_file = "{}/settings".format(self.path) | |
390 | if not os.path.isfile(self.settings_file): | |
391 | self.log.error("No such file: {}".format(self.settings_file)) | |
392 | ||
393 | self.recipe_file = "{}/recipe".format(self.path) | |
394 | if not os.path.isfile(self.recipe_file): | |
395 | self.log.error("No such file: {}".format(self.recipe_file)) | |
396 | ||
397 | def read_settings(self): | |
398 | self.config = configparser.ConfigParser() | |
399 | self.config.read(self.settings_file) | |
400 | self.name = self.config["DEFAULT"]["Name"] | |
401 | self.description = self.config["DEFAULT"]["Description"] | |
402 | ||
403 | self.virtual_environ_name = self.config["VIRTUAL_ENVIRONMENT"]["Name"] | |
404 | self.virtual_environ_path = self.config["VIRTUAL_ENVIRONMENT"]["Path"] | |
405 | self.virtual_environ_path = os.path.normpath(self.path + "/" + self.virtual_environ_path) | |
406 | ||
407 | def virtual_environ_setup(self): | |
408 | self.virtual_environ = virtual_environ(self.virtual_environ_path) | |
409 | ||
410 | self.virtual_networks = self.virtual_environ.get_networks() | |
411 | ||
412 | self.virtual_machines = self.virtual_environ.get_machines() | |
413 | ||
414 | def virtual_environ_start(self): | |
415 | pass | |
416 | ||
417 | def load_recipe(self): | |
418 | pass | |
419 | ||
420 | def run_recipe(): | |
421 | pass | |
422 | ||
423 | def virtual_environ_stop(): | |
424 | pass | |
425 | ||
426 | ||
427 | # Should return all vms and networks in a list | |
428 | # and should provide the path to the necessary xml files | |
429 | class virtual_environ(): | |
430 | def __init__(self, path): | |
431 | self.log = log(4) | |
432 | try: | |
433 | self.path = os.path.abspath(path) | |
434 | except BaseException as e: | |
435 | self.log.error("Could not get absolute path") | |
436 | ||
437 | self.log.debug(self.path) | |
438 | ||
439 | self.settings_file = "{}/settings".format(self.path) | |
440 | if not os.path.isfile(self.settings_file): | |
441 | self.log.error("No such file: {}".format(self.settings_file)) | |
442 | ||
443 | self.log.debug(self.settings_file) | |
444 | self.config = configparser.ConfigParser() | |
445 | self.config.read(self.settings_file) | |
446 | self.name = self.config["DEFAULT"]["name"] | |
447 | self.machines_string = self.config["DEFAULT"]["machines"] | |
448 | self.networks_string = self.config["DEFAULT"]["networks"] | |
449 | ||
450 | self.machines = [] | |
451 | for machine in self.machines_string.split(","): | |
452 | self.machines.append(machine.strip()) | |
453 | ||
454 | self.networks = [] | |
455 | for network in self.networks_string.split(","): | |
456 | self.networks.append(network.strip()) | |
457 | ||
458 | self.log.debug(self.machines) | |
459 | self.log.debug(self.networks) | |
460 | ||
461 | def get_networks(self): | |
462 | networks = {} | |
463 | for _network in self.networks: | |
464 | self.log.debug(_network) | |
465 | networks.setdefault(_network, network(os.path.normpath(self.path + "/" + self.config[_network]["xml_file"]))) | |
466 | return networks | |
467 | ||
468 | def get_machines(self): | |
469 | machines = {} | |
470 | for _machine in self.machines: | |
471 | self.log.debug(_machine) | |
472 | machines.setdefault(_machine, vm( | |
473 | os.path.normpath(self.path + "/" + self.config[_machine]["xml_file"]), | |
474 | os.path.normpath(self.path + "/" + self.config[_machine]["snapshot_xml_file"]))) | |
475 | ||
476 | return machines | |
477 | ||
478 | ||
479 | if __name__ == "__main__": | |
480 | import argparse | |
481 | ||
482 | parser = argparse.ArgumentParser() | |
483 | ||
484 | parser.add_argument("-d", "--directory", dest="dir") | |
485 | ||
486 | args = parser.parse_args() | |
487 | ||
488 | _recipe = recipe("/home/jonatan/python-testing-kvm/test/recipe") | |
489 | currenttest = test(args.dir) | |
490 | currenttest.read_settings() | |
491 | currenttest.virtual_environ_setup() |