pg-connection-string retains arbitrary query keys, so the driver's own
configuration key connectionTimeoutMillis reaches ConnectionParameters straight
from a URL — and it was not on the rejected list, while spellings that do
nothing were. Rejecting it closes that gap.
The precedence claims that guard was built on were partly wrong, so every source
was measured against the installed [email protected].0, a real blackhole listener, and a
real PostgreSQL rather than inferred from the merge:
statement_timeout=0 / =900000 server reported 0 and 15min — wins outright
query_timeout=0 overrides the field, but the parsed value is
the string "0", which is truthy, so every
query gets a 0 ms read timer and fails
nondeterministically — it breaks the client
rather than loosening the bound
connectionTimeoutMillis=0/900000 pollutes connectionParameters.connect_timeout
(10 -> 0 or 900 s), but that field only feeds
getLibpqConnectionString(), which the pure-JS
client never calls; the effective timer was
unchanged, with an explicit 500 ms still
expiring at ~500 ms either way
connect_timeout=0 no effect: recomputed from the explicit field
options=-c statement_timeout=… no effect, including a backslash-escaped
spelling — the named startup parameter wins
PGOPTIONS / PGCONNECT_TIMEOUT no effect
unrelated parameters no effect, deliberately untouched
Only statement_timeout is a genuine downgrade. The rest are rejected as
unsupported configuration and defense in depth: no legitimate DATABASE_URL
carries a driver option, the polluted connect_timeout would take effect on the
native binding, and query_timeout produces intermittent failures an operator
could not diagnose. That distinction is now stated where it was previously
asserted wrongly — the earlier comment and ADR text claimed connect_timeout
overrode the explicit field, which measurement disproved.
Rejection still happens at the one shared construction boundary, before any
pg.Client exists, with the existing fixed POSTGRES_MIGRATION_CONFIGURATION_INVALID
and no URL, host, port, credential, parameter, or value in the message. The
10 s defaults, narrower test overrides, Pass 2 TLS policy and its URL-conflict
checks, and every unrelated parameter are unchanged.
Co-Authored-By: Claude Opus 5 <[email protected]>
Two problems in the migration commands: no timeouts, and SQL split on literal
bytes.
`migrations:plan` and `migrations:apply` constructed their connection with
neither a connection deadline nor an operation deadline — a real server reported
`statement_timeout = 0` on the migration connection. Both now default to 10
seconds for the connection deadline, the client query timeout, and PostgreSQL's
own statement_timeout, applied at the one shared construction boundary so a
future call site cannot silently omit them. History reads, advisory-lock
queries, transaction control, migration SQL, and history writes are all covered.
The existing lock-wait deadline, the Pass 2 TLS policy, and Doctor's and the
bootstrap CLI's own timeouts are untouched, and no environment variable or flag
was added.
Explicit client fields do not win under the pinned driver. [email protected].0 builds
parameters as `Object.assign({}, config, parse(config.connectionString))`, so
the URL overrides passed options — verified directly, where an explicit
statement_timeout of 10000 alongside `?statement_timeout=0` produced a
server-reported 0, while a clean URL produced 10s. A DATABASE_URL carrying
connect_timeout, query_timeout, statement_timeout, or an `options` value setting
statement_timeout is therefore refused with the existing fixed configuration
error, before any client is constructed and without echoing the URL, parameter,
or value. Unrelated parameters are left alone.
The runner split each migration on the literal `--> statement-breakpoint` bytes.
Those bytes inside a string literal, a dollar-quoted function body, a quoted
identifier, or a comment tore the migration into fragments that were no longer
valid SQL — each case verified to produce two fragments where one was required.
Each migration's exact SQL is now passed to the client once, with no values and
no prepared-statement name, inside the existing transaction, and its history row
inserted only after that batch succeeds. One transaction still spans all pending
migrations; advisory locking, checksum validation, approval preflight, ordering,
rollback, cleanup, and sanitized error identity are unchanged. The port method
is renamed executeStatement to executeMigrationSql so the contract says what it
receives.
PostgreSQL parses the batch because it owns the only correct parser. A homegrown
splitter would have to track single quotes, dollar quoting with arbitrary tags,
quoted identifiers, line comments, nested block comments, and escape syntax to
answer a question the server already answers, and a parser dependency would add
supply-chain surface for the same reason. Drizzle's marker lines are ordinary
`--` comments when the batch is sent whole. No custom SQL parser exists here.
Co-Authored-By: Claude Opus 5 <[email protected]>
