publishRenameConcurrency (publish_rename_concurrency in YAML) sets how
many index files RenameFiles renames at once. It defaults to 4, the
value that was hard-coded, and 1 renames them one at a time. Values
below 1 are treated as 1, since a semaphore with no capacity would
never admit a rename.
The setting is global rather than per publishing endpoint because the
renames run against every storage backend, not only S3.
RenameFiles walks renameMap one entry at a time. Every rename is a round trip,
and on an S3 backend RenameFile is a CopyObject followed by a DeleteObject, so
a publish that rewrites a dozen indexes spends most of its wall clock waiting
on them in sequence.
Bounded at four in flight, matching the default used for concurrent package
uploads. The first error is returned rather than the last, and the remaining
renames still run, so a failure does not leave part of the set staged behind a
half-finished switch.
Measured against MinIO behind a proxy adding 50ms each way, publishing a
repository whose Contents is dominated by one package carrying 19,500 files:
publish update drops from 2703ms to 1624ms median, n=5 either side, a 40% cut.
The published object set and its sizes are identical before and after.
RenameFiles had no test coverage. It has four cases now: every entry renamed,
the concurrency limit respected, a failure reported without abandoning the
rest, and an empty rename map.
gpg_keys was missing from debian/aptly.conf, and the man page had no
entry for ppaBaseURL, enablePprofEndpoint or gpgKeys. The wording
follows the existing template comments where there is one.
debian/aptly.conf spelled dep_follow_all_variants as
dep_follow_allvariants and dep_verboseresolve as dep_verbose_resolve.
The YAML loader ignores unknown keys, so setting either to true in a
config written from this template had no effect.
Same reason as the JSON one: ConfigShowYAMLTest snapshots `aptly config
show` in YAML form. Checked all three gold files under t02_config this
time rather than the one CI named. CreateConfigTest_gold is a commented
template rather than struct output, so it is unaffected, and it passes.
ConfigShowTest snapshots the output of `aptly config show`, which now
carries acquireByHashAlgorithms with its default. The other three system
files mentioning "architectures" are inputs rather than expected output,
which is why only this one test failed.
Acquire-By-Hash entries are written for MD5Sum, SHA1, SHA256 and SHA512,
hardcoded in two places in deb/index_files.go. Every algorithm is a full
set of index copies on each publish, and on S3-like storage each of those
is a network round trip rather than a link.
Measured on an R2-backed archive of 25 packages across three suites, one
`aptly publish update` per suite:
Acquire-By-Hash off 38 S3 requests
Acquire-By-Hash on 222 S3 requests (88 HeadObject, 83 CopyObject,
35 DeleteObject, 13 PutObject)
Modern apt verifies with SHA256; MD5Sum and SHA1 are deprecated and
Debian has been phasing them out of Release files for years. Publishers
who do not need them are paying three quarters of that for nothing, with
no way to say so.
acquireByHashAlgorithms in aptly.conf now selects the set. An empty or
absent value keeps all four, so existing configurations are unaffected.
The order entries are written in comes from the code rather than the
config, so the directories created in one loop and the entries written in
another cannot disagree. An unrecognised name is an error rather than
something to skip: skipping a typo would produce "no by-hash entries for
that algorithm", which looks exactly like having configured it away.
Set per publish invocation from the config, the way SkipBz2 already is,
rather than persisted on the publish point.
Pre-existing test failures on this tree are unchanged by this commit:
deb goes 173->177 passed with the same 11 failures, utils keeps its one
(TestCompress), s3 stays green.
This patch adds validation to the version pasing logic (parseVersion) to
not allow packages to be registered which apt wouldn't accept anyway.
It then propogates validation errors through CompareVersions, the way
in which parseVersion gets called, so that appropriate decisions can be
made.
New packages with invalid versions are not accepted.
For any pre-exisiting packages with invalid versions, as much care is
taken as possible to log warnings, and not use those packages.
This PR is loosely bnased on one by by Aaron Foster
<afoster@cloudflare.com> though it has largely been written at this
point.
Signed off with internal and external emails for clarity, but commit
is under personal email where we typically do open source contributions
from.
Signed-off-by: Phil Dibowitz <pdibowitz@cloudflare.com>
Signed-off-by: Phil Dibowitz <pdibowitz@ipom.com>
Hansjoerg Maurer
André Roth
Rascalov
Martin Simon
Luan Dang
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James Munson
Twaik Yont
Phil Dibowitz