Remove "put-multiarch" in favor of new "perl-bashbrew" repository

https://github.com/docker-library/perl-bashbrew
This commit is contained in:
Tianon Gravi 2019-07-22 16:40:03 -07:00
parent 28212552fa
commit b378215a98
4 changed files with 0 additions and 549 deletions

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!*.pl

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FROM perl:5.28-slim
RUN set -eux; \
apt-get update; \
apt-get install -y --no-install-recommends \
ca-certificates \
wget \
; \
rm -rf /var/lib/apt/lists/*
# secure by default ♥ (thanks to sri!)
ENV PERL_CPANM_OPT --verbose --mirror https://cpan.metacpan.org
# TODO find a way to make --mirror-only / SSL work with backpan too :(
#RUN cpanm Digest::SHA Module::Signature
# TODO find a way to make --verify work with backpan as well :'(
#ENV PERL_CPANM_OPT $PERL_CPANM_OPT --verify
# reinstall cpanm itself, for good measure
RUN cpanm App::cpanminus
RUN set -eux; \
savedAptMark="$(apt-mark showmanual)"; \
apt-get update; \
apt-get install -y --no-install-recommends \
gcc \
libc-dev \
libssl-dev \
zlib1g-dev \
; \
rm -rf /var/lib/apt/lists/*; \
cpanm \
EV \
IO::Socket::IP \
IO::Socket::Socks \
Net::DNS::Native \
; \
# the tests for IO::Socket::SSL like to hang... :(
cpanm --notest IO::Socket::SSL; \
apt-mark auto '.*' > /dev/null; \
apt-mark manual $savedAptMark > /dev/null; \
apt-get purge -y --auto-remove
# https://metacpan.org/pod/release/SRI/Mojolicious-7.94/lib/Mojo/IOLoop.pm#DESCRIPTION
ENV LIBEV_FLAGS 4
# epoll (Linux)
RUN cpanm Mojolicious@8.15
COPY put-multiarch.pl /usr/local/bin/
ENTRYPOINT ["put-multiarch.pl"]

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#!/usr/bin/env perl
use Mojo::Base -strict, -signatures;
# this is a replacement for "bashbrew put-shared" (without "--single-arch") to combine many architecture-specific repositories into manifest lists in a separate repository
# for example, combining amd64/bash:latest, arm32v5/bash:latest, ..., s390x/bash:latest into a single library/bash:latest manifest list
# (in a more efficient way than manifest-tool can do generically such that we can reasonably do 3700+ no-op tag pushes individually in ~9 minutes)
use Digest::SHA;
use Mojo::Promise;
use Mojo::UserAgent;
use Mojo::Util;
my $publicProxy = $ENV{DOCKERHUB_PUBLIC_PROXY} || die 'missing DOCKERHUB_PUBLIC_PROXY env (https://github.com/tianon/dockerhub-public-proxy)';
my $dryRun = ($ARGV[0] || '') eq '--dry-run';
shift @ARGV if $dryRun;
my $ua = Mojo::UserAgent->new->max_redirects(10)->connect_timeout(120)->inactivity_timeout(120);
$ua->transactor->name(join ' ',
# https://github.com/docker/docker/blob/v1.11.2/dockerversion/useragent.go#L13-L34
'docker/1.11.2',
'go/1.6.2',
'git-commit/v1.11.2',
'kernel/4.4.11',
'os/linux',
'arch/amd64',
# BOGUS USER AGENTS FOR THE BOGUS USER AGENT THRONE
);
sub ua_retry_simple_req_p ($method, $url, $tries = 10) {
--$tries;
my $lastTry = $tries < 1;
my $methodP = lc($method) . '_p';
my $prom = $ua->$methodP($url);
if (!$lastTry) {
$prom = $prom->then(sub ($tx) {
return $tx if !$tx->error || $tx->res->code == 404 || $tx->res->code == 401;
return ua_retry_simple_req_p($method, $url, $tries);
}, sub {
return ua_retry_simple_req_p($method, $url, $tries);
});
}
return $prom;
}
sub split_image_name ($image) {
if ($image =~ m{
^
(?: ([^/:]+) / )? # optional namespace
([^/:]+) # image name
(?: : ([^/:]+) )? # optional tag
$
}x) {
my ($namespace, $name, $tag) = (
$1 // 'library', # namespace
$2, # image name
$3 // 'latest', # tag
);
return ($namespace, $name, $tag);
}
die "unrecognized image name format in: $image";
}
sub arch_to_platform ($arch) {
if ($arch =~ m{
^
(?: ([^-]+) - )? # optional "os" prefix ("windows-", etc)
([^-]+?) # "architecture" bit ("arm64", "s390x", etc)
(v[0-9]+)? # optional "variant" suffix ("v7", "v6", etc)
$
}x) {
return (
os => $1 // 'linux',
architecture => (
$2 eq 'i386'
? '386'
: (
$2 eq 'arm32'
? 'arm'
: $2
)
),
($3 ? (variant => $3) : ()),
);
}
die "unrecognized architecture format in: $arch";
}
# TODO make this promise-based and non-blocking?
# https://github.com/jberger/Mojolicious-Plugin-TailLog/blob/master/lib/Mojolicious/Plugin/TailLog.pm#L16-L22
# https://metacpan.org/pod/Capture::Tiny
# https://metacpan.org/pod/Mojo::IOLoop#subprocess
# https://metacpan.org/pod/IO::Async::Process
sub bashbrew (@) {
open my $fh, '-|', 'bashbrew', @_ or die "failed to run 'bashbrew': $!";
local $/;
my $output = <$fh>;
close $fh or die "failed to close 'bashbrew'";
chomp $output;
return $output;
}
sub get_manifest_p ($org, $repo, $ref, $tries = 10) {
--$tries;
my $lastTry = $tries < 1;
state %cache;
if ($ref =~ m!^sha256:! && $cache{$ref}) {
return Mojo::Promise->resolve($cache{$ref});
}
return ua_retry_simple_req_p(GET => "$publicProxy/v2/$org/$repo/manifests/$ref")->then(sub ($tx) {
return if $tx->res->code == 404 || $tx->res->code == 401;
if (!$lastTry && $tx->res->code != 200) {
return get_manifest_p($org, $repo, $ref, $tries);
}
die "unexpected exit code fetching '$org/$repo:$ref': " . $tx->res->code unless $tx->res->code == 200;
my $digest = $tx->res->headers->header('docker-content-digest') or die "'$org/$repo:$ref' is missing 'docker-content-digest' header";
die "malformed 'docker-content-digest' header in '$org/$repo:$ref': '$digest'" unless $digest =~ m!^sha256:!;
my $manifest = $tx->res->json or die "'$org/$repo:$ref' has bad or missing JSON";
my $size = int($tx->res->headers->content_length);
my $verbatim = $tx->res->body;
return $cache{$digest} = {
digest => $digest,
manifest => $manifest,
size => $size,
verbatim => $verbatim,
mediaType => (
$manifest->{schemaVersion} == 1
? 'application/vnd.docker.distribution.manifest.v1+json'
: (
$manifest->{schemaVersion} == 2
? $manifest->{mediaType}
: die "unknown schemaVersion for '$org/$repo' at '$ref'"
)
),
};
});
}
sub get_blob_p ($org, $repo, $ref, $tries = 10) {
die "unexpected blob reference for '$org/$repo': '$ref'" unless $ref =~ m!^sha256:!;
--$tries;
my $lastTry = $tries < 1;
state %cache;
return Mojo::Promise->resolve($cache{$ref}) if $cache{$ref};
return ua_retry_simple_req_p(GET => "$publicProxy/v2/$org/$repo/blobs/$ref")->then(sub ($tx) {
return if $tx->res->code == 404;
if (!$lastTry && $tx->res->code != 200) {
return get_blob_p($org, $repo, $ref, $tries);
}
die "unexpected exit code fetching blob from '$org/$repo:$ref'': " . $tx->res->code unless $tx->res->code == 200;
return $cache{$ref} = $tx->res->json;
});
}
sub head_manifest_p ($org, $repo, $ref) {
die "unexpected manifest reference for HEAD '$org/$repo': '$ref'" unless $ref =~ m!^sha256:!;
my $cacheKey = "$org/$repo:$ref";
state %cache;
return Mojo::Promise->resolve($cache{$cacheKey}) if $cache{$cacheKey};
return ua_retry_simple_req_p(HEAD => "$publicProxy/v2/$org/$repo/manifests/$ref")->then(sub ($tx) {
return 0 if $tx->res->code == 404 || $tx->res->code == 401;
die "unexpected exit code HEADing manifest '$cacheKey': " . $tx->res->code unless $tx->res->code == 200;
return $cache{$cacheKey} = 1;
});
}
sub head_blob_p ($org, $repo, $ref) {
die "unexpected blob reference for HEAD '$org/$repo': '$ref'" unless $ref =~ m!^sha256:!;
my $cacheKey = "$org/$repo:$ref";
state %cache;
return Mojo::Promise->resolve($cache{$cacheKey}) if $cache{$cacheKey};
return ua_retry_simple_req_p(HEAD => "$publicProxy/v2/$org/$repo/blobs/$ref")->then(sub ($tx) {
return 0 if $tx->res->code == 404 || $tx->res->code == 401;
die "unexpected exit code HEADing blob '$cacheKey': " . $tx->res->code unless $tx->res->code == 200;
return $cache{$cacheKey} = 1;
});
}
# get list of manifest list items and necessary blobs for a particular architecture
sub get_arch_p ($targetNamespace, $arch, $archNamespace, $repo, $tag) {
return get_manifest_p($archNamespace, $repo, $tag)->then(sub ($manifestData = undef) {
return unless $manifestData;
my ($digest, $manifest, $size) = ($manifestData->{digest}, $manifestData->{manifest}, $manifestData->{size});
my $mediaType = $manifestData->{mediaType};
if ($mediaType eq 'application/vnd.docker.distribution.manifest.list.v2+json') {
# jackpot -- if it's already a manifest list, the hard work is done!
return ($archNamespace, $manifest->{manifests});
}
if ($mediaType eq 'application/vnd.docker.distribution.manifest.v1+json' || $mediaType eq 'application/vnd.docker.distribution.manifest.v2+json') {
my $manifestListItem = {
mediaType => $mediaType,
size => $size,
digest => $digest,
platform => {
arch_to_platform($arch),
($manifest->{'os.version'} ? ('os.version' => $manifest->{'os.version'}) : ()),
},
};
if ($manifestListItem->{platform}{os} eq 'windows' && !$manifestListItem->{platform}{'os.version'} && $mediaType eq 'application/vnd.docker.distribution.manifest.v2+json') {
# if we're on Windows, we need to make an effort to fetch the "os.version" value from the config for the platform object
return get_blob_p($archNamespace, $repo, $manifest->{config}{digest})->then(sub ($config = undef) {
if ($config && $config->{'os.version'}) {
$manifestListItem->{platform}{'os.version'} = $config->{'os.version'};
}
return ($archNamespace, [ $manifestListItem ]);
});
}
else {
return ($archNamespace, [ $manifestListItem ]);
}
}
die "unknown mediaType '$mediaType' for '$archNamespace/$repo:$tag'";
});
}
sub needed_artifacts_p ($targetNamespace, $sourceNamespace, $repo, $manifestDigest) {
return head_manifest_p($targetNamespace, $repo, $manifestDigest)->then(sub ($exists) {
return if $exists;
return get_manifest_p($sourceNamespace, $repo, $manifestDigest)->then(sub ($manifestData = undef) {
return unless $manifestData;
my $manifest = $manifestData->{manifest};
my $schemaVersion = $manifest->{schemaVersion};
my @blobs;
if ($schemaVersion == 1) {
push @blobs, map { $_->{blobSum} } @{ $manifest->{fsLayers} };
}
elsif ($schemaVersion == 2) {
die "this should never happen: $manifest->{mediaType}" unless $manifest->{mediaType} eq 'application/vnd.docker.distribution.manifest.v2+json'; # sanity check
push @blobs, $manifest->{config}{digest}, map { $_->{urls} ? () : $_->{digest} } @{ $manifest->{layers} };
}
else {
die "this should never happen: $schemaVersion"; # sanity check
}
return Mojo::Promise->all(
Mojo::Promise->resolve([ $sourceNamespace, $repo, 'manifest', $manifestDigest ]),
Mojo::Promise->map({ concurrency => 3 }, sub ($blob) {
return head_blob_p($targetNamespace, $repo, $blob)->then(sub ($exists) {
return if $exists;
return $sourceNamespace, $repo, 'blob', $blob;
});
}, @blobs),
)->then(sub { map { @$_ } @_ });
});
});
}
sub get_dockerhub_creds {
die 'missing DOCKER_CONFIG or HOME environment variable' unless $ENV{DOCKER_CONFIG} or $ENV{HOME};
my $config = Mojo::File->new(($ENV{DOCKER_CONFIG} || ($ENV{HOME} . '/.docker')) . '/config.json')->slurp;
die 'missing or empty ".docker/config.json" file' unless $config;
my $json = Mojo::JSON::decode_json($config);
die 'invalid ".docker/config.json" file' unless $json && $json->{auths};
for my $registry (keys %{ $json->{auths} }) {
my $auth = $json->{auths}{$registry}{auth};
next unless $auth;
if ($registry eq 'https://index.docker.io/v1/' || $registry eq 'index.docker.io') {
$auth = Mojo::Util::b64_decode($auth);
return $auth if $auth && $auth =~ m!:!;
}
}
die 'failed to find credentials for Docker Hub in ".docker/config.json" file';
}
sub authenticated_registry_req_p ($method, $repos, $url, $contentType = undef, $payload = undef, $tries = 10) {
--$tries;
my $lastTry = $tries < 1;
my %headers = ($contentType ? ('Content-Type' => $contentType) : ());
state %tokens;
if (my $token = $tokens{$repos}) {
$headers{Authorization} = "Bearer $token";
}
my $methodP = lc($method) . '_p';
my $fullUrl = "https://registry-1.docker.io/v2/$url";
my $prom = $ua->$methodP($fullUrl, \%headers, ($payload ? $payload : ()));
if (!$lastTry) {
$prom = $prom->then(sub ($tx) {
if (!$lastTry && $tx->res->code == 401) {
# "Unauthorized" -- we must need to go fetch a token for this registry request (so let's go do that, then retry the original registry request)
my $auth = $tx->res->headers->www_authenticate;
die "unexpected WWW-Authenticate header ('$url'): $auth" unless $auth =~ m{ ^ Bearer \s+ (\S.*) $ }x;
my $realm = $1;
my $authUrl = Mojo::URL->new;
while ($realm =~ m{
# key="val",
([^=]+)
=
"([^"]+)"
,?
}xg) {
my ($key, $val) = ($1, $2);
next if $key eq 'error' and $val eq 'invalid_token'; # just ignore the error if it's "invalid_token" because it likely means our token expired mid-push so we just need to renew
die "WWW-Authenticate header error ('$url'): $val ($auth)" if $key eq 'error';
if ($key eq 'realm') {
$authUrl->base(Mojo::URL->new($val));
}
else {
$authUrl->query->append($key => $_) for split / /, $val; # Docker's auth server expects "scope=xxx&scope=yyy" instead of "scope=xxx%20yyy"
}
}
$authUrl = $authUrl->to_abs;
say {*STDERR} "Note: grabbing auth token from $authUrl (for $fullUrl; $tries tries remain)";
my $dockerhubCreds = get_dockerhub_creds();
return ua_retry_simple_req_p(GET => $authUrl->userinfo($dockerhubCreds)->to_unsafe_string)->then(sub ($tx) {
if (my $error = $tx->error) {
die "registry authentication error ('$url'): " . ($error->{code} ? $error->{code} . ' -- ' : '') . $error->{message};
}
$tokens{$repos} = $tx->res->json->{token};
return authenticated_registry_req_p($method, $repos, $url, $contentType, $payload, $tries);
});
}
if (!$lastTry && $tx->res->code != 200) {
return authenticated_registry_req_p($method, $repos, $url, $contentType, $payload, $tries);
}
if (my $error = $tx->error) {
$tx->req->headers->authorization('REDATCTED') if $tx->req->headers->authorization;
die "registry request error ('$url'): " . ($error->{code} ? $error->{code} . ' -- ' : '') . $error->{message} . "\n\nREQUEST:\n" . $tx->req->headers->to_string . "\n\n" . $tx->req->body . "\n\nRESPONSE:\n" . $tx->res->to_string . "\n";
}
return $tx;
}, sub {
return authenticated_registry_req_p($method, $repos, $url, $contentType, $payload, $tries);
});
}
return $prom;
}
Mojo::Promise->map({ concurrency => 8 }, sub ($img) {
my ($org, $repo, $tag) = split_image_name($img);
die "image '$img' is missing explict namespace -- bailing to avoid accidental push to '$org'" unless $img =~ m!/!;
my @tags = (
$img =~ m/:/
? ( "$repo:$tag" )
: ( List::Util::uniq sort split /\n/, bashbrew('list', $repo) )
);
return Mojo::Promise->resolve unless @tags; # no tags, nothing to do! (opensuse, etc)
return Mojo::Promise->map({ concurrency => 1 }, sub ($repoTag) {
my (undef, $repo, $tag) = split_image_name($repoTag);
my @arches = List::Util::uniq sort split /\n/, bashbrew('cat', '--format', '{{ range .Entries }}{{ range .Architectures }}{{ . }}={{ archNamespace . }}{{ "\n" }}{{ end }}{{ end }}', "$repo:$tag");
return Mojo::Promise->resolve unless @arches; # no arches, nothing to do!
return Mojo::Promise->map({ concurrency => 1 }, sub ($archData) {
my ($arch, $archNamespace) = split /=/, $archData;
return get_arch_p($org, $arch, $archNamespace, $repo, $tag);
}, @arches)->then(sub (@archResponses) {
my @manifestListItems;
my @neededArtifactPromises;
for my $archResponse (@archResponses) {
next unless @$archResponse;
my ($archNamespace, $manifestListItems) = @$archResponse;
push @manifestListItems, @$manifestListItems;
push @neededArtifactPromises, map { my $digest = $_->{digest}; sub { needed_artifacts_p($org, $archNamespace, $repo, $digest) } } @$manifestListItems;
}
my $manifestList = {
schemaVersion => 2,
mediaType => 'application/vnd.docker.distribution.manifest.list.v2+json',
manifests => \@manifestListItems,
};
my $manifestListJson = Mojo::JSON::encode_json($manifestList);
my $manifestListDigest = 'sha256:' . Digest::SHA::sha256_hex($manifestListJson);
return head_manifest_p($org, $repo, $manifestListDigest)->then(sub ($exists) {
# if we already have the manifest we're planning to push in the namespace where we plan to push it, we can skip all blob mounts! \m/
return if $exists;
# (we can also skip if we're in "dry run" mode since we only care about the final manifest matching in that case)
return if $dryRun;
return (
@neededArtifactPromises
? Mojo::Promise->map({ concurrency => 1 }, sub { $_->() }, @neededArtifactPromises)
: Mojo::Promise->resolve
)->then(sub (@neededArtifacts) {
@neededArtifacts = map { @$_ } @neededArtifacts;
# now "@neededArtifacts" is a list of tuples of the format [ sourceNamespace, sourceRepo, type, digest ], ready for cross-repo mounting / PUTing (where type is "blob" or "manifest")
my @mountBlobPromises;
my @putManifestPromises;
for my $neededArtifact (@neededArtifacts) {
next unless @$neededArtifact;
my ($sourceNamespace, $sourceRepo, $type, $digest) = @$neededArtifact;
if ($type eq 'blob') {
# https://docs.docker.com/registry/spec/api/#mount-blob
push @mountBlobPromises, sub { authenticated_registry_req_p(POST => "$org/$repo:push,$sourceNamespace/$sourceRepo:pull" => "$org/$repo/blobs/uploads/?mount=$digest&from=$sourceNamespace/$sourceRepo") };
}
elsif ($type eq 'manifest') {
push @putManifestPromises, sub { get_manifest_p($sourceNamespace, $sourceRepo, $digest)->then(sub ($manifestData = undef) {
return unless $manifestData;
return authenticated_registry_req_p(PUT => "$org/$repo:push" => "$org/$repo/manifests/$digest" => $manifestData->{mediaType} => $manifestData->{verbatim});
}) };
}
else {
die "this should never happen: $type"; # sanity check
}
}
# mount any necessary blobs
return (
@mountBlobPromises
? Mojo::Promise->map({ concurrency => 1 }, sub { $_->() }, @mountBlobPromises)
: Mojo::Promise->resolve
)->then(sub {
# ... *then* push any missing image manifests (because they'll fail to push if the blobs aren't pushed first)
if (@putManifestPromises) {
return Mojo::Promise->map({ concurrency => 1 }, sub { $_->() }, @putManifestPromises);
}
return;
});
});
})->then(sub {
# let's do one final check of the tag we're pushing to see if it's already the manifest we expect it to be (to avoid making literally every image constantly "Updated a few seconds ago" all the time)
return get_manifest_p($org, $repo, $tag)->then(sub ($manifestData = undef) {
if ($manifestData && $manifestData->{digest} eq $manifestListDigest) {
say "Skipping $org/$repo:$tag ($manifestListDigest)" unless $dryRun; # if we're in "dry run" mode, we need clean output
return;
}
if ($dryRun) {
say "Would push $org/$repo:$tag ($manifestListDigest)";
return;
}
# finally, all necessary blobs and manifests are pushed, we've verified that we do in fact need to push this manifest, so we should be golden to push it!
return authenticated_registry_req_p(PUT => "$org/$repo:push" => "$org/$repo/manifests/$tag" => $manifestList->{mediaType} => $manifestListJson)->then(sub ($tx) {
my $digest = $tx->res->headers->header('Docker-Content-Digest');
say "Pushed $org/$repo:$tag ($digest)";
say {*STDERR} "WARNING: expected '$manifestListDigest', got '$digest' (for '$org/$repo:$tag')" unless $manifestListDigest eq $digest;
});
});
});
});
}, @tags);
}, @ARGV)->catch(sub {
say {*STDERR} "ERROR: $_" for @_;
exit scalar @_;
})->wait;

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#!/usr/bin/env bash
set -Eeuo pipefail
bashbrew="$(which bashbrew)"
bashbrewLibrary="${BASHBREW_LIBRARY:-$HOME/docker/official-images/library}"
[ -n "$BASHBREW_ARCH_NAMESPACES" ]
dockerConfig="${DOCKER_CONFIG:-$HOME/.docker}"
[ -s "$dockerConfig/config.json" ]
args=(
-v "$bashbrew":/usr/local/bin/bashbrew:ro
-v "$bashbrewLibrary":/library:ro
-e BASHBREW_LIBRARY=/library
-e BASHBREW_ARCH_NAMESPACES
-v "$dockerConfig":/.docker:ro
-e DOCKER_CONFIG='/.docker'
-e DOCKERHUB_PUBLIC_PROXY
#-e MOJO_CLIENT_DEBUG=1
#-e MOJO_IOLOOP_DEBUG=1
)
if [ -t 1 ]; then
args+=( -it )
fi
dir="$(dirname "$BASH_SOURCE")"
img="$(docker build -q -t oi/put-multiarch --cache-from oi/put-multiarch "$dir")"
exec docker run --rm --init "${args[@]}" "$img" "$@"