aboutsummaryrefslogtreecommitdiffstats
path: root/test/mocks/mass-pnf-sim/MassPnfSim.py
blob: 070451b27ec12beb779cd168805968c40328d8aa (plain)
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
#!/usr/bin/env python3
import logging
from subprocess import run, CalledProcessError
import argparse
import ipaddress
from sys import exit
from os import chdir, getcwd, path, popen, kill, getuid, stat, mkdir
from shutil import copytree, rmtree, move
from json import loads, dumps
from yaml import load, SafeLoader, dump
from glob import glob
from time import strftime
from docker import from_env
from requests import get, codes, post
from requests.exceptions import MissingSchema, InvalidSchema, InvalidURL, ConnectionError, ConnectTimeout

def validate_url(url):
    '''Helper function to perform --urlves input param validation'''
    logger = logging.getLogger("urllib3")
    logger.setLevel(logging.WARNING)
    try:
        get(url, timeout=0.001)
    except (MissingSchema, InvalidSchema, InvalidURL):
        raise argparse.ArgumentTypeError(f'{url} is not a valid URL')
    except (ConnectionError, ConnectTimeout):
        pass
    return url

def validate_ip(ip):
    '''Helper function to validate input param is a vaild IP address'''
    try:
        ip_valid = ipaddress.ip_address(ip)
    except ValueError:
        raise argparse.ArgumentTypeError(f'{ip} is not a valid IP address')
    else:
        return ip_valid

def get_parser():
    '''Process input arguments'''

    parser = argparse.ArgumentParser()
    subparsers = parser.add_subparsers(title='Subcommands', dest='subcommand')
    # Build command parser
    subparsers.add_parser('build', help='Build simulator image')
    # Bootstrap command parser
    parser_bootstrap = subparsers.add_parser('bootstrap', help='Bootstrap the system')
    parser_bootstrap.add_argument('--count', help='Instance count to bootstrap', type=int, metavar='INT', default=1)
    parser_bootstrap.add_argument('--urlves', help='URL of the VES collector', type=validate_url, metavar='URL', required=True)
    parser_bootstrap.add_argument('--ipfileserver', help='Visible IP of the file server (SFTP/FTPS) to be included in the VES event',
                                  type=validate_ip, metavar='IP', required=True)
    parser_bootstrap.add_argument('--typefileserver', help='Type of the file server (SFTP/FTPS) to be included in the VES event',
                                  type=str, choices=['sftp', 'ftps'], required=True)
    parser_bootstrap.add_argument('--ipstart', help='IP address range beginning', type=validate_ip, metavar='IP', required=True)
    # Start command parser
    parser_start = subparsers.add_parser('start', help='Start instances')
    parser_start.add_argument('--count', help='Instance count to start', type=int, metavar='INT', default=0)
    # Stop command parser
    parser_stop = subparsers.add_parser('stop', help='Stop instances')
    parser_stop.add_argument('--count', help='Instance count to stop', type=int, metavar='INT', default=0)
    # Trigger command parser
    parser_trigger = subparsers.add_parser('trigger', help='Trigger one single VES event from each simulator')
    parser_trigger.add_argument('--count', help='Instance count to trigger', type=int, metavar='INT', default=0)
    # Stop-simulator command parser
    parser_stopsimulator = subparsers.add_parser('stop_simulator', help='Stop sending PNF registration messages')
    parser_stopsimulator.add_argument('--count', help='Instance count to stop', type=int, metavar='INT', default=0)
    # Trigger-custom command parser
    parser_triggerstart = subparsers.add_parser('trigger_custom', help='Trigger one single VES event from specific simulators')
    parser_triggerstart.add_argument('--triggerstart', help='First simulator id to trigger', type=int,
                                     metavar='INT', required=True)
    parser_triggerstart.add_argument('--triggerend', help='Last simulator id to trigger', type=int,
                                     metavar='INT', required=True)
    # Status command parser
    parser_status = subparsers.add_parser('status', help='Status')
    parser_status.add_argument('--count', help='Instance count to show status for', type=int, metavar='INT', default=0)
    # Clean command parser
    subparsers.add_parser('clean', help='Clean work-dirs')
    # General options parser
    parser.add_argument('--verbose', help='Verbosity level', choices=['info', 'debug'],
                        type=str, default='info')
    return parser

class MassPnfSim:

    log_lvl = logging.INFO
    sim_config = 'config/config.yml'
    sim_msg_config = 'config/config.json'
    sim_port = 5000
    sim_base_url = 'http://{}:' + str(sim_port) + '/simulator'
    sim_start_url = sim_base_url + '/start'
    sim_status_url = sim_base_url + '/status'
    sim_stop_url = sim_base_url + '/stop'
    sim_container_name = 'pnf-simulator'
    rop_script_name = 'ROP_file_creator.sh'

    def __init__(self, args):
        self.args = args
        self.logger = logging.getLogger(__name__)
        self.logger.setLevel(self.log_lvl)
        self.sim_dirname_pattern = "pnf-sim-lw-"
        self.mvn_build_cmd = 'mvn clean package docker:build -Dcheckstyle.skip'
        self.docker_compose_status_cmd = 'docker-compose ps'
        self.existing_sim_instances = self._enum_sim_instances()

        # Validate 'trigger_custom' subcommand options
        if self.args.subcommand == 'trigger_custom':
            if (self.args.triggerend + 1) > self.existing_sim_instances:
                self.logger.error('--triggerend value greater than existing instance count.')
                exit(1)

        # Validate --count option for subcommands that support it
        if self.args.subcommand in ['start', 'stop', 'trigger', 'status', 'stop_simulator']:
            if self.args.count > self.existing_sim_instances:
                self.logger.error('--count value greater that existing instance count')
                exit(1)
            if not self.existing_sim_instances:
                self.logger.error('No bootstrapped instance found')
                exit(1)

        # Validate 'bootstrap' subcommand
        if (self.args.subcommand == 'bootstrap') and self.existing_sim_instances:
            self.logger.error('Bootstrapped instances detected, not overwiriting, clean first')
            exit(1)

    def _run_cmd(self, cmd, dir_context='.'):
        old_pwd = getcwd()
        try:
            chdir(dir_context)
            self.logger.debug(f'_run_cmd: Current direcotry: {getcwd()}')
            self.logger.debug(f'_run_cmd: Command string: {cmd}')
            run(cmd, check=True, shell=True)
            chdir(old_pwd)
        except FileNotFoundError:
            self.logger.error(f"Directory {dir_context} not found")
        except CalledProcessError as e:
            exit(e.returncode)

    def _enum_sim_instances(self):
        '''Helper method that returns bootstraped simulator instances count'''
        return len(glob(f"{self.sim_dirname_pattern}[0-9]*"))

    def _get_sim_instance_data(self, instance_id):
        '''Helper method that returns specific instance data'''
        oldpwd = getcwd()
        chdir(f"{self.sim_dirname_pattern}{instance_id}")
        with open(self.sim_config) as cfg:
            yml = load(cfg, Loader=SafeLoader)
        chdir(oldpwd)
        return yml['ippnfsim']

    def _get_docker_containers(self):
        '''Returns a list containing 'name' attribute of running docker containers'''
        dc = from_env()
        containers = []
        for container in dc.containers.list():
            containers.append(container.attrs['Name'][1:])
        return containers

    def _get_iter_range(self):
        '''Helper routine to get the iteration range
        for the lifecycle commands'''
        if hasattr(self.args, 'count'):
            if not self.args.count:
                return [self.existing_sim_instances]
            else:
                return [self.args.count]
        elif hasattr(self.args, 'triggerstart'):
            return [self.args.triggerstart, self.args.triggerend + 1]
        else:
            return [self.existing_sim_instances]

    def _archive_logs(self, sim_dir):
        '''Helper function to archive simulator logs or create the log dir'''
        old_pwd = getcwd()
        try:
            chdir(sim_dir)
            if path.isdir('logs'):
                arch_dir = f"logs/archive_{strftime('%Y-%m-%d_%T')}"
                mkdir(arch_dir)
                self.logger.debug(f'Created {arch_dir}')
                # Collect file list to move
                self.logger.debug('Archiving log files')
                for fpattern in ['*.log', '*.xml']:
                    for f in glob('logs/' + fpattern):
                        # Move files from list to arch dir
                        move(f, arch_dir)
                        self.logger.debug(f'Moving {f} to {arch_dir}')
            else:
                mkdir('logs')
                self.logger.debug("Logs dir didn't exist, created")
            chdir(old_pwd)
        except FileNotFoundError:
            self.logger.error(f"Directory {sim_dir} not found")

    def _generate_pnf_sim_config(self, i, port_sftp, port_ftps, pnf_sim_ip):
        '''Writes a yaml formatted configuration file for Java simulator app'''
        yml = {}
        yml['urlves'] = self.args.urlves
        yml['urlsftp'] = f'sftp://onap:pano@{self.args.ipfileserver}:{port_sftp}'
        yml['urlftps'] = f'ftps://onap:pano@{self.args.ipfileserver}:{port_ftps}'
        yml['ippnfsim'] = pnf_sim_ip
        yml['typefileserver'] = self.args.typefileserver
        self.logger.debug(f'Generated simulator config:\n{dump(yml)}')
        with open(f'{self.sim_dirname_pattern}{i}/{self.sim_config}', 'w') as fout:
            fout.write(dump(yml))

    def bootstrap(self):
        self.logger.info("Bootstrapping PNF instances")

        start_port = 2000
        ftps_pasv_port_start = 8000
        ftps_pasv_port_num_of_ports = 10

        ftps_pasv_port_end = ftps_pasv_port_start + ftps_pasv_port_num_of_ports

        for i in range(self.args.count):
            self.logger.info(f"PNF simulator instance: {i}")

            # The IP ranges are in distance of 16 compared to each other.
            # This is matching the /28 subnet mask used in the dockerfile inside.
            instance_ip_offset = i * 16
            ip_properties = [
                      'subnet',
                      'gw',
                      'PnfSim',
                      'ftps',
                      'sftp'
                    ]

            ip_offset = 0
            ip = {}
            for prop in ip_properties:
                ip.update({prop: str(self.args.ipstart + ip_offset + instance_ip_offset)})
                ip_offset += 1

            self.logger.debug(f'Instance #{i} properties:\n {dumps(ip, indent=4)}')

            PortSftp = start_port + 1
            PortFtps = start_port + 2
            start_port += 2

            self.logger.info(f'\tCreating {self.sim_dirname_pattern}{i}')
            copytree('pnf-sim-lightweight', f'{self.sim_dirname_pattern}{i}')

            composercmd = " ".join([
                    "./simulator.sh compose",
                    ip['gw'],
                    ip['subnet'],
                    str(i),
                    self.args.urlves,
                    ip['PnfSim'],
                    str(self.args.ipfileserver),
                    self.args.typefileserver,
                    str(PortSftp),
                    str(PortFtps),
                    ip['ftps'],
                    ip['sftp'],
                    str(ftps_pasv_port_start),
                    str(ftps_pasv_port_end)
                ])
            self.logger.debug(f"Script cmdline: {composercmd}")
            self.logger.info(f"\tCreating instance #{i} configuration ")
            self._generate_pnf_sim_config(i, PortSftp, PortFtps, ip['PnfSim'])
            self._run_cmd(composercmd, f"{self.sim_dirname_pattern}{i}")

            ftps_pasv_port_start += ftps_pasv_port_num_of_ports + 1
            ftps_pasv_port_end += ftps_pasv_port_num_of_ports + 1

            # ugly hack to chown vsftpd config file to root
            if getuid():
                self._run_cmd('sudo chown root config/vsftpd_ssl.conf', f'{self.sim_dirname_pattern}{i}')
                self.logger.debug(f"vsftpd_ssl.conf file owner UID: {stat(self.sim_dirname_pattern + str(i) + '/config/vsftpd_ssl.conf').st_uid}")

            self.logger.info(f'Done setting up instance #{i}')

    def build(self):
        self.logger.info("Building simulator image")
        if path.isfile('pnf-sim-lightweight/pom.xml'):
            self._run_cmd(self.mvn_build_cmd, 'pnf-sim-lightweight')
        else:
            self.logger.error('POM file was not found, Maven cannot run')
            exit(1)

    def clean(self):
        self.logger.info('Cleaning simulators workdirs')
        for sim_id in range(self.existing_sim_instances):
            rmtree(f"{self.sim_dirname_pattern}{sim_id}")

    def start(self):
        for i in range(*self._get_iter_range()):
            # If container is not running
            if f"{self.sim_container_name}-{i}" not in self._get_docker_containers():
                self.logger.info(f'Starting {self.sim_dirname_pattern}{i} instance:')
                self.logger.info(f' PNF-Sim IP: {self._get_sim_instance_data(i)}')
                #Move logs to archive
                self._archive_logs(self.sim_dirname_pattern + str(i))
                self.logger.info(' Starting simulator containers using netconf model specified in config/netconf.env')
                self._run_cmd('docker-compose up -d', self.sim_dirname_pattern + str(i))
            else:
                self.logger.warning(f'Instance {self.sim_dirname_pattern}{i} containers are already up')

    def status(self):
        for i in range(*self._get_iter_range()):
            self.logger.info(f'Getting {self.sim_dirname_pattern}{i} instance status:')
            if f"{self.sim_container_name}-{i}" in self._get_docker_containers():
                try:
                    sim_ip = self._get_sim_instance_data(i)
                    self.logger.info(f' PNF-Sim IP: {sim_ip}')
                    self._run_cmd(self.docker_compose_status_cmd, f"{self.sim_dirname_pattern}{i}")
                    sim_response = get('{}'.format(self.sim_status_url).format(sim_ip))
                    if sim_response.status_code == codes.ok:
                        self.logger.info(sim_response.text)
                    else:
                        self.logger.error(f'Simulator request returned http code {sim_response.status_code}')
                except KeyError:
                    self.logger.error(f'Unable to get sim instance IP from {self.sim_config}')
            else:
                self.logger.info(' Simulator containers are down')

    def stop(self):
        for i in range(*self._get_iter_range()):
            self.logger.info(f'Stopping {self.sim_dirname_pattern}{i} instance:')
            self.logger.info(f' PNF-Sim IP: {self._get_sim_instance_data(i)}')
            # attempt killing ROP script
            rop_pid = []
            for ps_line in iter(popen(f'ps --no-headers -C {self.rop_script_name} -o pid,cmd').readline, ''):
                # try getting ROP script pid
                try:
                    ps_line_arr = ps_line.split()
                    assert self.rop_script_name in ps_line_arr[2]
                    assert ps_line_arr[3] == str(i)
                    rop_pid = ps_line_arr[0]
                except AssertionError:
                    pass
                else:
                    # get rop script childs, kill ROP script and all childs
                    childs = popen(f'pgrep -P {rop_pid}').read().split()
                    for pid in [rop_pid] + childs:
                        kill(int(pid), 15)
                    self.logger.info(f' ROP_file_creator.sh {i} successfully killed')
            if not rop_pid:
                # no process found
                self.logger.warning(f' ROP_file_creator.sh {i} already not running')
            # try tearing down docker-compose application
            if f"{self.sim_container_name}-{i}" in self._get_docker_containers():
                self._run_cmd('docker-compose down', self.sim_dirname_pattern + str(i))
                self._run_cmd('docker-compose rm', self.sim_dirname_pattern + str(i))
            else:
                self.logger.warning(" Simulator containers are already down")

    def trigger(self):
        self.logger.info("Triggering VES sending:")
        for i in range(*self._get_iter_range()):
            sim_ip = self._get_sim_instance_data(i)
            self.logger.info(f'Triggering {self.sim_dirname_pattern}{i} instance:')
            self.logger.info(f' PNF-Sim IP: {sim_ip}')
            # setup req headers
            req_headers = {
                    "Content-Type": "application/json",
                    "X-ONAP-RequestID": "123",
                    "X-InvocationID": "456"
                }
            self.logger.debug(f' Request headers: {req_headers}')
            try:
                # get payload for the request
                with open(f'{self.sim_dirname_pattern}{i}/{self.sim_msg_config}') as data:
                    json_data = loads(data.read())
                    self.logger.debug(f' JSON payload for the simulator:\n{json_data}')
                    # make a http request to the simulator
                    sim_response = post('{}'.format(self.sim_start_url).format(sim_ip), headers=req_headers, json=json_data)
                    if sim_response.status_code == codes.ok:
                        self.logger.info(' Simulator response: ' + sim_response.text)
                    else:
                        self.logger.warning(' Simulator response ' + sim_response.text)
            except TypeError:
                self.logger.error(f' Could not load JSON data from {self.sim_dirname_pattern}{i}/{self.sim_msg_config}')

    # Make the 'trigger_custom' an alias to the 'trigger' method
    trigger_custom = trigger

    def stop_simulator(self):
        self.logger.info("Stopping sending PNF registration messages:")
        for i in range(*self._get_iter_range()):
            sim_ip = self._get_sim_instance_data(i)
            self.logger.info(f'Stopping {self.sim_dirname_pattern}{i} instance:')
            self.logger.info(f' PNF-Sim IP: {sim_ip}')
            sim_response = post('{}'.format(self.sim_stop_url).format(sim_ip))
            if sim_response.status_code == codes.ok:
                self.logger.info(' Simulator response: ' + sim_response.text)
            else:
                self.logger.warning(' Simulator response ' + sim_response.text)