This file is indexed.

/usr/bin/swift-dispersion-report is in swift 2.2.0-1+deb8u1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  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
#! /usr/bin/python
# Copyright (c) 2010-2012 OpenStack Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from collections import defaultdict
from ConfigParser import ConfigParser
from optparse import OptionParser
from sys import exit, stdout, stderr
from time import time
try:
    import simplejson as json
except ImportError:
    import json

from eventlet import GreenPool, hubs, patcher, Timeout
from eventlet.pools import Pool

from swift.common import direct_client
try:
    from swiftclient import get_auth
except ImportError:
    from swift.common.internal_client import get_auth
from swift.common.internal_client import SimpleClient
from swift.common.ring import Ring
from swift.common.exceptions import ClientException
from swift.common.utils import compute_eta, get_time_units, config_true_value


unmounted = []
notfound = []
json_output = False
debug = False
insecure = False


def get_error_log(prefix):

    def error_log(msg_or_exc):
        global debug, unmounted, notfound
        if hasattr(msg_or_exc, 'http_status'):
            identifier = '%s:%s/%s' % (msg_or_exc.http_host,
                                       msg_or_exc.http_port,
                                       msg_or_exc.http_device)
            if msg_or_exc.http_status == 507:
                if identifier not in unmounted:
                    unmounted.append(identifier)
                    print >>stderr, 'ERROR: %s is unmounted -- This will ' \
                        'cause replicas designated for that device to be ' \
                        'considered missing until resolved or the ring is ' \
                        'updated.' % (identifier)
                    stderr.flush()
            if debug and identifier not in notfound:
                notfound.append(identifier)
                print >>stderr, 'ERROR: %s returned a 404' % (identifier)
                stderr.flush()
        if not hasattr(msg_or_exc, 'http_status') or \
                msg_or_exc.http_status not in (404, 507):
            print >>stderr, 'ERROR: %s: %s' % (prefix, msg_or_exc)
            stderr.flush()
    return error_log


def container_dispersion_report(coropool, connpool, account, container_ring,
                                retries, output_missing_partitions):
    with connpool.item() as conn:
        containers = [c['name'] for c in conn.get_account(
            prefix='dispersion_', full_listing=True)[1]]
    containers_listed = len(containers)
    if not containers_listed:
        print >>stderr, 'No containers to query. Has ' \
                        'swift-dispersion-populate been run?'
        stderr.flush()
        return
    retries_done = [0]
    containers_queried = [0]
    container_copies_missing = defaultdict(int)
    container_copies_found = [0]
    container_copies_expected = [0]
    begun = time()
    next_report = [time() + 2]

    def direct(container, part, nodes):
        found_count = 0
        for node in nodes:
            error_log = get_error_log('%(ip)s:%(port)s/%(device)s' % node)
            try:
                attempts, _junk = direct_client.retry(
                    direct_client.direct_head_container, node, part, account,
                    container, error_log=error_log, retries=retries)
                retries_done[0] += attempts - 1
                found_count += 1
            except ClientException as err:
                if err.http_status not in (404, 507):
                    error_log('Giving up on /%s/%s/%s: %s' % (part, account,
                              container, err))
            except (Exception, Timeout) as err:
                error_log('Giving up on /%s/%s/%s: %s' % (part, account,
                          container, err))
        if output_missing_partitions and \
                found_count < len(nodes):
            missing = len(nodes) - found_count
            print '\r\x1B[K',
            stdout.flush()
            print >>stderr, '# Container partition %s missing %s cop%s' % (
                part, missing, 'y' if missing == 1 else 'ies')
        container_copies_found[0] += found_count
        containers_queried[0] += 1
        container_copies_missing[len(nodes) - found_count] += 1
        if time() >= next_report[0]:
            next_report[0] = time() + 5
            eta, eta_unit = compute_eta(begun, containers_queried[0],
                                        containers_listed)
            if not json_output:
                print '\r\x1B[KQuerying containers: %d of %d, %d%s left, %d ' \
                      'retries' % (containers_queried[0], containers_listed,
                      round(eta), eta_unit, retries_done[0]),
                stdout.flush()
    container_parts = {}
    for container in containers:
        part, nodes = container_ring.get_nodes(account, container)
        if part not in container_parts:
            container_copies_expected[0] += len(nodes)
            container_parts[part] = part
            coropool.spawn(direct, container, part, nodes)
    coropool.waitall()
    distinct_partitions = len(container_parts)
    copies_found = container_copies_found[0]
    copies_expected = container_copies_expected[0]
    value = 100.0 * copies_found / copies_expected
    elapsed, elapsed_unit = get_time_units(time() - begun)
    container_copies_missing.pop(0, None)
    if not json_output:
        print '\r\x1B[KQueried %d containers for dispersion reporting, ' \
              '%d%s, %d retries' % (containers_listed, round(elapsed),
              elapsed_unit, retries_done[0])
        if containers_listed - distinct_partitions:
            print 'There were %d overlapping partitions' % (
                  containers_listed - distinct_partitions)
        for missing_copies, num_parts in container_copies_missing.iteritems():
            print missing_string(num_parts, missing_copies,
                                 container_ring.replica_count)
        print '%.02f%% of container copies found (%d of %d)' % (
            value, copies_found, copies_expected)
        print 'Sample represents %.02f%% of the container partition space' % (
            100.0 * distinct_partitions / container_ring.partition_count)
        stdout.flush()
        return None
    else:
        results = {'retries': retries_done[0],
                   'overlapping': containers_listed - distinct_partitions,
                   'pct_found': value,
                   'copies_found': copies_found,
                   'copies_expected': copies_expected}
        for missing_copies, num_parts in container_copies_missing.iteritems():
            results['missing_%d' % (missing_copies)] = num_parts
        return results


def object_dispersion_report(coropool, connpool, account, object_ring,
                             retries, output_missing_partitions):
    container = 'dispersion_objects'
    with connpool.item() as conn:
        try:
            objects = [o['name'] for o in conn.get_container(
                container, prefix='dispersion_', full_listing=True)[1]]
        except ClientException as err:
            if err.http_status != 404:
                raise
            print >>stderr, 'No objects to query. Has ' \
                            'swift-dispersion-populate been run?'
            stderr.flush()
            return
    objects_listed = len(objects)
    if not objects_listed:
        print >>stderr, 'No objects to query. Has swift-dispersion-populate ' \
                        'been run?'
        stderr.flush()
        return
    retries_done = [0]
    objects_queried = [0]
    object_copies_found = [0]
    object_copies_expected = [0]
    object_copies_missing = defaultdict(int)
    begun = time()
    next_report = [time() + 2]

    def direct(obj, part, nodes):
        found_count = 0
        for node in nodes:
            error_log = get_error_log('%(ip)s:%(port)s/%(device)s' % node)
            try:
                attempts, _junk = direct_client.retry(
                    direct_client.direct_head_object, node, part, account,
                    container, obj, error_log=error_log, retries=retries)
                retries_done[0] += attempts - 1
                found_count += 1
            except ClientException as err:
                if err.http_status not in (404, 507):
                    error_log('Giving up on /%s/%s/%s/%s: %s' % (part, account,
                              container, obj, err))
            except (Exception, Timeout) as err:
                error_log('Giving up on /%s/%s/%s/%s: %s' % (part, account,
                          container, obj, err))
        if output_missing_partitions and \
                found_count < len(nodes):
            missing = len(nodes) - found_count
            print '\r\x1B[K',
            stdout.flush()
            print >>stderr, '# Object partition %s missing %s cop%s' % (
                part, missing, 'y' if missing == 1 else 'ies')
        object_copies_found[0] += found_count
        object_copies_missing[len(nodes) - found_count] += 1
        objects_queried[0] += 1
        if time() >= next_report[0]:
            next_report[0] = time() + 5
            eta, eta_unit = compute_eta(begun, objects_queried[0],
                                        objects_listed)
            if not json_output:
                print '\r\x1B[KQuerying objects: %d of %d, %d%s left, %d ' \
                      'retries' % (objects_queried[0], objects_listed,
                                   round(eta), eta_unit, retries_done[0]),
            stdout.flush()
    object_parts = {}
    for obj in objects:
        part, nodes = object_ring.get_nodes(account, container, obj)
        if part not in object_parts:
            object_copies_expected[0] += len(nodes)
            object_parts[part] = part
            coropool.spawn(direct, obj, part, nodes)
    coropool.waitall()
    distinct_partitions = len(object_parts)
    copies_found = object_copies_found[0]
    copies_expected = object_copies_expected[0]
    value = 100.0 * copies_found / copies_expected
    elapsed, elapsed_unit = get_time_units(time() - begun)
    if not json_output:
        print '\r\x1B[KQueried %d objects for dispersion reporting, ' \
              '%d%s, %d retries' % (objects_listed, round(elapsed),
              elapsed_unit, retries_done[0])
        if objects_listed - distinct_partitions:
            print 'There were %d overlapping partitions' % (
                  objects_listed - distinct_partitions)

        for missing_copies, num_parts in object_copies_missing.iteritems():
            print missing_string(num_parts, missing_copies,
                                 object_ring.replica_count)

        print '%.02f%% of object copies found (%d of %d)' % \
            (value, copies_found, copies_expected)
        print 'Sample represents %.02f%% of the object partition space' % (
            100.0 * distinct_partitions / object_ring.partition_count)
        stdout.flush()
        return None
    else:
        results = {'retries': retries_done[0],
                   'overlapping': objects_listed - distinct_partitions,
                   'pct_found': value,
                   'copies_found': copies_found,
                   'copies_expected': copies_expected}

        for missing_copies, num_parts in object_copies_missing.iteritems():
            results['missing_%d' % (missing_copies,)] = num_parts
        return results


def missing_string(partition_count, missing_copies, copy_count):
    exclamations = ''
    missing_string = str(missing_copies)
    if missing_copies == copy_count:
        exclamations = '!!! '
        missing_string = 'all'
    elif copy_count - missing_copies == 1:
        exclamations = '! '

    verb_string = 'was'
    partition_string = 'partition'
    if partition_count > 1:
        verb_string = 'were'
        partition_string = 'partitions'

    copy_string = 'copy'
    if missing_copies > 1:
        copy_string = 'copies'

    return '%sThere %s %d %s missing %s %s.' % (
        exclamations, verb_string, partition_count, partition_string,
        missing_string, copy_string
    )


if __name__ == '__main__':
    patcher.monkey_patch()
    hubs.get_hub().debug_exceptions = False

    conffile = '/etc/swift/dispersion.conf'

    parser = OptionParser(usage='''
Usage: %%prog [options] [conf_file]

[conf_file] defaults to %s'''.strip() % conffile)
    parser.add_option('-j', '--dump-json', action='store_true', default=False,
                      help='dump dispersion report in json format')
    parser.add_option('-d', '--debug', action='store_true', default=False,
                      help='print 404s to standard error')
    parser.add_option('-p', '--partitions', action='store_true', default=False,
                      help='print missing partitions to standard error')
    parser.add_option('--container-only', action='store_true', default=False,
                      help='Only run container report')
    parser.add_option('--object-only', action='store_true', default=False,
                      help='Only run object report')
    parser.add_option('--insecure', action='store_true', default=False,
                      help='Allow accessing insecure keystone server. '
                           'The keystone\'s certificate will not be verified.')
    options, args = parser.parse_args()

    if args:
        conffile = args.pop(0)

    c = ConfigParser()
    if not c.read(conffile):
        exit('Unable to read config file: %s' % conffile)
    conf = dict(c.items('dispersion'))
    swift_dir = conf.get('swift_dir', '/etc/swift')
    retries = int(conf.get('retries', 5))
    concurrency = int(conf.get('concurrency', 25))
    endpoint_type = str(conf.get('endpoint_type', 'publicURL'))
    if options.dump_json or config_true_value(conf.get('dump_json', 'no')):
        json_output = True
    container_report = config_true_value(conf.get('container_report', 'yes')) \
        and not options.object_only
    object_report = config_true_value(conf.get('object_report', 'yes')) \
        and not options.container_only
    if not (object_report or container_report):
        exit("Neither container or object report is set to run")
    insecure = options.insecure \
        or config_true_value(conf.get('keystone_api_insecure', 'no'))
    if options.debug:
        debug = True

    coropool = GreenPool(size=concurrency)

    os_options = {'endpoint_type': endpoint_type}

    url, token = get_auth(conf['auth_url'], conf['auth_user'],
                          conf['auth_key'],
                          auth_version=conf.get('auth_version', '1.0'),
                          os_options=os_options,
                          insecure=insecure)
    account = url.rsplit('/', 1)[1]
    connpool = Pool(max_size=concurrency)
    connpool.create = lambda: SimpleClient(
        url=url, token=token, retries=retries)

    container_ring = Ring(swift_dir, ring_name='container')
    object_ring = Ring(swift_dir, ring_name='object')

    output = {}
    if container_report:
        output['container'] = container_dispersion_report(
            coropool, connpool, account, container_ring, retries,
            options.partitions)
    if object_report:
        output['object'] = object_dispersion_report(
            coropool, connpool, account, object_ring, retries,
            options.partitions)
    if json_output:
        print json.dumps(output)