What:
Use the github.com/jackc/pgx postgresql driver in place of
github.com/lib/pq.
Why:
github.com/lib/pq has some problems with error handling and context
cancellations (i.e. it might even issue queries or DML statements more
than once! see https://github.com/lib/pq/issues/939). The
github.com/jackx/pgx library appears not to have these problems, and
also appears to be better engineered and implemented (in particular, it
doesn't use "exceptions by panic"). It should also give us some
performance improvements in some cases, and even more so if we can use
it directly instead of going through the database/sql layer.
Change-Id: Ia696d220f340a097dee9550a312d37de14ed2044
STORJ_POSTGRES_TEST naming was not consistent with STORJ_SIM_POSTGRES.
This allows to use STORJ_TEST_POSTGRES for clarity, it still has a
fallback to STORJ_POSTGRES_TEST.
Change-Id: I6f294c66c80fcfd6750fea2a89795f3b7f5dd691
This ensures that rows are closed to avoid leaks.
Also verifies that Err() is called, to ensure that no
error is left behind.
Change-Id: Idd1bec9bf479f40021da67b2c80ce83033149469
This changeset replaces https://review.dev.storj.io/c/storj/storj/+/1839
which did the same thing but Nat couldn't figure out how to fix conflicting
files the correct gerrity way.
Change-Id: If05a8902aca986ea9f6c9168a90b31beebab839a
This attempts to add a README.md to help create consistent migrations
that maximize our test coverage and do not include unnecessary
statements.
It also adds a feature to have an `-- OLD DATA --` section as well
as a `-- NEW DATA --` section so that we can fix mistakes made in
previous snapshots (like a row that was forgotten to be added when a
table was created) without editing them going forward.
Change-Id: I28a786f8ef163cae1de1bb08f61af1e1104b0a88
This will only work if retryable errors are returned on the first
call to Next. Otherwise if they're returned later, we will need
deeper changes at the application code level throughout the
codebase 😬👎
Change-Id: I46d795a13670f66b7f085605ba1b779f69c339c3
Currently Cockroach isn't performant for concurrent database setup and
tear-down. Instead of a single instance allow setting multiple potential
connection strings and let the tests pick one connection string
randomly.
This improves test duration by ~10 minutes.
While we are at significantly changing how pgtest works, introduce
helper PickPostgres and PickCockroach for selecting the database to
reduce code duplications in multiple places.
Change-Id: I8ad171d5c4c8a4fc081ec2ae9bdd0cc948a80619
we do not use that driver, and removing the case from the
type assertion reduces the satellite binary size by 5%.
Change-Id: I1c1b5e1e57dc4a98415103cfddd4f8c091588573
before this change, any transaction that took longer than 5 minutes
even if it succeeded, would get a retry error included in the
result.
try to make the logic more clear and add comments for the reader.
Change-Id: Ib84a89a33907a24426ecf52c90404be0e0dfa307
uuid.UUID implements driver.Value so it can be directly used as a
scannable result.
Replace uses of dbutil.BytesToUUID with uuid.FromBytes.
Change-Id: I51a670185ceb3cc2199d5aa2b76bc3fc191ca8fe
storagenodes have like 10 or more databases. without this
tag they all get sent as the same value, stomping on each
other.
Change-Id: Ib12019684d6ea8f2a5b83df584056dfa79e3c4b3
this commit updates our monkit dependency to the v3 version where
it outputs in an influx style. this makes discovery much easier
as many tools are built to look at it this way.
graphite and rothko will suffer some due to no longer being a tree
based on dots. hopefully time will exist to update rothko to
index based on the new metric format.
it adds an influx output for the statreceiver so that we can
write to influxdb v1 or v2 directly.
Change-Id: Iae9f9494a6d29cfbd1f932a5e71a891b490415ff
it was noticed that if you had a long lived transaction A that
was blocking some other transaction B and A was being aborted
due to retriable errors, then transaction B was never given
priority. this was due to using savepoints to do lightweight
retries.
this behavior was problematic becaue we had some queries blocked
for over 16 hours, so this commit addresses the issue with two
prongs:
1. bound the amount of time we will retry a transaction
2. create new transactions when a retry is needed
the first ensures that we never wait for 16 hours, and the value
chosen is 10 minutes. that should be long enough for an ample
amount of retries for small queries, and huge queries probably
shouldn't be retried, even if possible: it's more preferrable to
find a way to make them smaller.
the second ensures that even in the case of retries, queries that
are blocked on the aborted transaction gain priority to run.
between those two changes, the maximum stall time due to retries
should be bounded to around 10 minutes.
Change-Id: Icf898501ef505a89738820a3fae2580988f9f5f4
This ought to make it so that all single statements (Exec- or Query-) on
a CockroachDB backend will get retried as necessary. As there is no need
for savepoints to be allocated or released in this case, there is no
round-trip overhead except when statements actually do need to be
retried.
Change-Id: Ibd7f1725ff727477c456cb309120d080f3cd7099
We don't do a lot of panicking in our main code, so hopefully this won't
matter much, but we /do/ call panic a lot in our tests (t.Fatal,
require.NoError, etc). And when that happens, we need pending
transactions to be aborted or we can get into a deadlock situation when
something else tries to /Close/ that connection.
Change-Id: Idaf0d543ac95afea34f9b2393d1187f5322e9f0f
Replace all the remaining uses of sql.DB with tagsql.DB to
fix issues with context cancellation.
Introduce tagsql.Open which helps to get rid of all tagsql.Wrap-s.
Use tagsql in cockroachkv and postgreskv.
Change-Id: I8946d203341cb85a25976896fc7881e1f704e779
Also added temporary types withRebind and withTagTx,
which will be later removed. Currently they help to avoid
changing the whole codebase at the same time.
Change-Id: I7f07ba8f4709a23a463bfa67464628665a05808f
dbschema.Query is used only for testing and sqlite,
so this won't cause us problems in production.
Change-Id: Ib296a7daf161a9d3de23a7dfdc4f505d47ac4a37
This reverts commit 8e242cd012.
Revert because lib/pq has known issues with context cancellation.
These issues need to be resolved before these changes can be merged.
Change-Id: I160af51dbc2d67c5449aafa406a403e5367bb555
this will allow for some nice runtime analysis down the road.
also, this allows for wrapping database handles in a way that
can interact with these contexts
requires https://review.dev.storj.io/c/storj/dbx/+/514
Change-Id: Ib087b7cd73296dd2c1e0331314da34d861f61d2b
When error is formatted using %v it's not possible to check
whether the error was caused by a context cancellation.
Change-Id: I164d1c83cdf5e7e6eacf082145b5c6a47078d041
This code needs to work against cockroachDB, so transactions must be retried
when a retryable error is returned. This change puts migrate
transactions into the dbutil.WithTx transactional helpers to achieve
this in the easiest way.
Change-Id: Ib930e82d55cb0257357a222ce9131e6e53372c03
These helpers will work similar to the WithTx method we have added to
our dbx.DB instances, but it will use crdb.ExecuteTx or crdb.ExecuteInTx
when the backend is CockroachDB, so that transactions are retried
correctly.
Anything that uses transactions and might need to work against
CockroachDB needs to handle "RetriableError" from cockroachdb by
restarting the transaction. This will probably be a large pain if not
using these helpers or something very like them.
Subsequent changes will undertake transforming all db-transaction uses
in satellite code so that they are cockroach-safe.
Change-Id: I648b8de2168612c67b9d6eb8402bccf8286249a9
