openstack/swift - swift - OpenDev: Free Software Needs Free Tools

Currently we can get one proxy-logging transfer stat emission over the
duration of the upload/download. We want another stat coming out of
proxy-logging: something that gets emitted periodically as bytes are
actually sent/received so we can get reasonably accurate point-in-time
breakdowns of bandwidth usage.
Co-Authored-By: Alistair Coles <alistairncoles@gmail.com>
Co-Authored-By: Shreeya Deshpande <shreeyad@nvidia.com>
Change-Id: Ideecd0aa58ddf091c9f25f15022a9066088f532b
Signed-off-by: Yan Xiao <yanxiao@nvidia.com>

get_s3_access_key_id returns the S3 access_key_id user for the request
is_s3_req checks whether a request looks like it ought to be an S3 request
parse_path returns a wsgi string
extract_bucket_and_key extracts bucket and object from the request's PATH_INFO
Co-Authored-By: Alistair Coles <alistairncoles@gmail.com>
Co-Authored-By: Clay Gerrard <clay.gerrard@gmail.com>
Co-Authored-By: Shreeya Deshpande <shreeyad@nvidia.com>
Change-Id: Iaf86a07238cca6700dee736f55d4c0672cccf1b1
Signed-off-by: Shreeya Deshpande <shreeyad@nvidia.com>

Change-Id: I1e53d171faff02e2dbcbcc779ad3a47506b26853
Signed-off-by: Clay Gerrard <clay.gerrard@gmail.com>

* add a self.temp_dir in setUp and remove in teraDown
* be consistent in order of (expected, actual) args
* assert the complete exception error line
Related-Change: I289d3e9b6fe14159925786732ad748acd0459812
Change-Id: I185c8cd55db6df593bb3304c54c5160c1f662b86
Signed-off-by: Alistair Coles <alistairncoles@gmail.com>

The relinker has already been robust to hardlink collisions on
tombstones for some time; this change allows ops to optionally
(non-default) enable a similar handling of other files when relinking
the old=>new partdir.
If your cluster is having a bunch of these kinds of collisions and after
spot checking you determine the data is in fact duplicate copies the
same data - you'd much rather have the option for the relinker to
programatically handle them non-destructively than forcing ops to rm a
bunch of files manually just get out of a PPI.
Once the PPI is over and you reconstrcutors are running again, after
some validation you can probably clean out your quarantine dirs.
Drive-by: log unknown relink errors at error level to match expected
non-zero return code
Closes-Bug: #2127779
Change-Id: Iaae0d9fb7a1949d1aad9aa77b0daeb249fb471b5
Signed-off-by: Clay Gerrard <clay.gerrard@gmail.com>

Extract helpers (from container.sharder) that formats log
context from either a broker (preferring broker.path/db_file)
or a plain db_file string. Use it in common.db_replicator and
container.replicator so messages are uniform and robust.
Update tests to cover both cases.
No functional changes to replication behavior; this is
logging/robustness and test updates only.
Change-Id: I289d3e9b6fe14159925786732ad748acd0459812
Related-Change: I7d2fe064175f002055054a72f348b87dc396772b
Signed-off-by: ashnair <ashnair@nvidia.com>

Move tests to base TestCase, currently they are only running against old
"broker w/o metadata" - but the tests and behavior should work on all
versions of the account schema
Drive-by: reword tests to make assertions stronger and behaviors more
obvious
Related-Change: Ic7c2aa878caf039b29abb900b4f491130be3d8a8
Change-Id: I59abd956ffa01bd41f29959ff3df89a3a20a00d4
Signed-off-by: Clay Gerrard <clay.gerrard@gmail.com>

iterate through not allowed methods and assert
Change-Id: Ia304709fc56d3e81bb1326b56a4b0d64ed698160
Signed-off-by: Tim Burke <tim.burke@gmail.com>

In addition to being in the pure unmolested ondisk format from the
source container; the manifest must also include the normally
protected X-Static-Large-Object metadata.
Change-Id: Ic6638e8258e9dec755f8d9630f0586bd3c9b4420
Related-Change: I8d503419b7996721a671ed6b2795224775a7d8c6
Signed-off-by: Tim Burke <tim.burke@gmail.com>

Related-Change-Id: I38c11b7aae8c4112bb3d671fa96012ab0c44d5a2
Change-Id: Ibe5d206d2b96e174f849715fb13562ae0d2f5de2
Signed-off-by: Clay Gerrard <clay.gerrard@gmail.com>

This patch replaces --force-commits with a --skip-commits flag in
swift-manage-shard-ranges to determine when to commit object updates.
Change-Id: I6de041f5c12dca2618d22d1271efe242b2f35258
Signed-off-by: Christian Ohanaja <cohanaja@nvidia.com>

The cost of memcache misses could be deadly. For example, when
updating shard range cache query miss, PUT requests would have to
query the backend to figure out which shard to upload the objects.
And when a lot of requests are sending to the backend at the same
time, this could easily overload the root containers and cause a
lot of 500/503 errors; and when proxy-servers receive responses of
all those 200 backend shard range queries, they could in turn try
to write the same shard range data into memcached servers at the
same time, and cause memcached to return OOM failures too.
We have seen cache misses frequently to updating shard range cache
in production, due to Memcached out-of-memory and cache evictions.
To cope with those kind of situations, a memcached based cooperative
token mechanism can be added into proxy-server to coalesce lots of
in-flight backend requests into a few: when updating shard range
cache misses, only the first few of requests will get global
cooperative tokens and then be able to fetch updating shard ranges
from backend container servers. And the following cache miss
requests will wait for cache filling to finish, instead of all
querying the backend container servers. This will prevent a flood
of backend requests to overload both container servers and memcached
servers.
Drive-by fix: when memcache is not available, object controller will
only need to retrieve a specific shard range from the container server
to send the update request to.
Co-Authored-By: Clay Gerrard <clay.gerrard@gmail.com>
Co-Authored-By: Tim Burke <tim.burke@gmail.com>
Co-Authored-By: Yan Xiao <yanxiao@nvidia.com>
Co-Authored-By: Shreeya Deshpande <shreeyad@nvidia.com>
Signed-off-by: Jianjian Huo <jhuo@nvidia.com>
Change-Id: I38c11b7aae8c4112bb3d671fa96012ab0c44d5a2

Add a path property for AccountBroker and use lazy, resilient
_populate_instance_cache(). Use None attrs as flags, avoid broad
try/except in path, and retry if cache population fails.
Change-Id: Ic7c2aa878caf039b29abb900b4f491130be3d8a8
Signed-off-by: ashnair <ashnair@nvidia.com>

Memcached based cooperative token is a improved version of ghetto lock,
see the description of ghetto lock at here:
https://github.com/memcached/memcached/wiki/ProgrammingTricks
It's used to avoid the thundering herd situation which many caching
users face: given a cache item that is popular and difficult to
recreate, in the event of cache misses, users could end up with hundreds
(or thousands) of processes slamming the backend database at the same
time in an attempt to refill the same cache content. This thundering
herd problem not only often leads to unresponsive backend; and also
those writes into memcached cause premature cache eviction under memory
pressure.
With cooperative token, when lots of in-flight callers try to get the
cached item specified by key from memcache and get cache misses, only
the first few query requests (limited by by ``num_tokens``) will be able
get the cooperative tokens by creating or incrementing an internal
memcache key, and then those callers with tokens can send backend
requests to fetch data from backend servers and be able to set data into
memcache; all other cache miss requests without a token should wait for
cache filling to finish, instead of all querying the backend servers at
the same time.
Co-Authored-By: Tim Burke <tim.burke@gmail.com>
Co-Authored-By: Clay Gerrard <clay.gerrard@gmail.com>
Co-Authored-By: Yan Xiao <yanxiao@nvidia.com>
Co-Authored-By: Alistair Coles <alistairncoles@gmail.com>
Signed-off-by: Jianjian Huo <jhuo@nvidia.com>
Change-Id: I50ff92441c2f2c49b3034644aba59930e8a99589

Change-Id: Ib6bf702e38495e52e3b2f5ca95ed17c519018474
Signed-off-by: Clay Gerrard <clay.gerrard@gmail.com>

The disable_fallocate function provided in common.utils doesn't really
have a way to undo it - it's tested independently in test_utils.
It shouldn't be used on test_diskfile or else test_utils fallocate tests
will fail afterwards.
Change-Id: I6ffa97b39111ba25f85ba7cfde21440d975dc760
Signed-off-by: Clay Gerrard <clay.gerrard@gmail.com>

Change-Id: I0168ab113fdda60ed858ed0928356699399d4044
Signed-off-by: Alistair Coles <alistairncoles@gmail.com>

Closes-Bug: #2122543
Co-Authored-By: Clay Gerrard <clay.gerrard@gmail.com>
Signed-off-by: Tim Burke <tim.burke@gmail.com>
Change-Id: I8a2a96394734899ee48e1d9264bf3908968c51a8

The s3api cross-compat tests in test_service weren't sophisticated
enough to account for real s3 session credentials that could see actual
aws s3 buckets (or a vsaio you actually use) - however valid assertions
on the authorization logic doesn't actually require such a strictly
clean slate.
Drive-by: prefer test config option without double negative, and update
ansible that's based on the sample config.
Related-Change-Id: I811642fccd916bd9ef71846a8108d50a462740f0
Change-Id: Ifab08cfe72f12d80e2196ad9b9b7876ace5825b4
Signed-off-by: Clay Gerrard <clay.gerrard@gmail.com>

Signed-off-by: Tim Burke <tim.burke@gmail.com>
Change-Id: I2e2a4e2c448319e6531372ae06ab81eb58edc57e

Added the new field to be able to log the access key during the
s3api calls, while reserving the field to be filled with auth relevant
information in case of other middlewares. Added respective code to
the tempauth and keystone middlewares.
Since s3api creates a copy of the environ dict for the downstream
request object when translating the s3req.to_swift_req the environ
dict that is seen/modifed in other mw module is not the same instance
seen in proxy-logging - using mutable objects get transfered into the
swift_req.environ.
Change the assert in test_proxy_logging from "the last field" to
the index 21 in the interests of maintainability.
Also added some regression tests for object, bucket and s3 v4 apis and
updated the documentation with the details about the new field.
Signed-off-by: Vitaly Bordyug <vbordug@gmail.com>
Change-Id: I0ce4e92458e2b05a4848cc7675604c1aa2b64d64

S3 stopped returning DisplayNamme in the Owner field of object
listings [1], so the tests need to stop asserting that it is present.
Further work is needed to drop DisplayName from the Swift s3api
responses [2].
[1] https://docs.aws.amazon.com/AmazonS3/latest/API/API_Owner.html
[2] https://bugs.launchpad.net/swift/+bug/2120622
Change-Id: Ia915a65313394910c74ae826c912b5549e833a7b
Signed-off-by: Alistair Coles <alistairncoles@gmail.com>

The RuntimeError gives more of a hint than the TypeError, but we haven't
really solved the issue. If there's a busted pyeclib install, it's safe
to assume it won't have ISA-L alongside it; just proceed assuming it's
not available.
Closes-Bug: #2120591
Related-Change: I64a85eb739fb72efe41f1ee829e463167246b793
Co-Authored-By: Alistair Coles <alistairncoles@gmail.com>
Signed-off-by: Tim Burke <tim.burke@gmail.com>
Change-Id: I2791566b208327b1fb536fb56a363337ab3f3941

ssync unit tests would sometimes fail when making assertions about the
ssync receiver log messages. Test runner output would show that the
messages were eventually being logged. However, the assertions could
be made before the ssync receiver request thread had completed.
A trampoline had been previously been used to workaround this, but
that is clearly insufficient. The author found that increasing the
trampoline interval would help reduce the rate of failures, but not
eliminate them.
This patch introduces a custom GreenPool for the unit test wsgi object
server so that tests can deterministically wait for the receiver
request handling thread to exit before making assertions.
Closes-Bug: #212065
Change-Id: I09ad8bb1becae46a78902d1d384a9f27a3d54b38
Signed-off-by: Alistair Coles <alistairncoles@gmail.com>

If pyeclib dist is missing files then the isal loading would blow up
with "TypeError: 'NoneType' object is not iterable". This patch
changes that to a RuntimeError with a more useful message.
Change-Id: I64a85eb739fb72efe41f1ee829e463167246b793
Closes-Bug: #2120591
Signed-off-by: Alistair Coles <alistairncoles@gmail.com>

Previously it was possible for a Timestamp to have inconsistent raw
and normal values. For example:
>>> ts1 = Timestamp(1755077566.523385)
>>> (ts1.normal, ts1.raw, (~ts1).normal)
('1755077566.52339', 175507756652338, '8244922433.47661')
This results in the invert function not being reliably reversible:
(~(~ts1)).normal
'1755077566.52338'
The cause is that the normal value is based on Timestamp.timestamp
which preserves the precision of the value given to the constructor,
whereas the invert function uses the limited precision raw value.
This patch forces Timestamp.timestamp to have the limited precision
value of Timestamp.raw.
Change-Id: I4e7fd6078aae3f284628303f20ced66aa702c466
Signed-off-by: Alistair Coles <alistairncoles@gmail.com>

Signed-off-by: Tim Burke <tim.burke@gmail.com>
Change-Id: I75bd005a4a3bc79c1bd8f8fa1153a64059970865

Related-Change-Id: I8c342c4751ba3ca682efd152e90e396e9f8eb851
Change-Id: I9df32c5aae4e681d488419f36982ffc36589d50a
Signed-off-by: Clay Gerrard <clay.gerrard@gmail.com>

If a PUT subrequest body iterator times out while the object server is
reading it, the object server will handle the timeout and return a 500
response to the ssync receiver.
Previously, the ssync receiver would attempt to drain the remainder of
the subrequest body iterator and then resume reading the next
subrequest from the SSYNC body. However, the attempt to drain the
subrequest iterator would fail (silently) because the timeout had
already caused the iterator to exit.
The ssync receiver would therefore treat any remaining subrequest body
as the preamble to the next subrequest. This remaining subrequest body
content was likely to cause the protocol parsing to fail, but in the
worst case could be erroneously interpreted as a valid subrequest.
(The exact failure mechanism depends on what state the
eventlet.wsgi.Input is left in when the timeout fired.)
This patch ensures that the ssync receiver will terminate processing
an SSYNC request if an exception occurs while reading a subrequest
body.
Closes-Bug: #2115991
Change-Id: I585e8a916d947c3da8d7c0e8a85cf0a8ab85f7f0
Co-authored-by: Tim Burke <tim.burke@gmail.com>
Signed-off-by: Alistair Coles <alistairncoles@gmail.com>