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|
// file : load/load.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#include <signal.h> // signal()
#include <cerrno>
#include <chrono>
#include <thread> // this_thread::sleep_for()
#include <cstring> // strncmp()
#include <iostream>
#include <odb/session.hxx>
#include <odb/database.hxx>
#include <odb/exceptions.hxx>
#include <odb/transaction.hxx>
#include <odb/schema-catalog.hxx>
#include <odb/pgsql/database.hxx>
#include <libbutl/pager.hxx>
#include <libbutl/sha256.hxx>
#include <libbutl/process.hxx>
#include <libbutl/openssl.hxx>
#include <libbutl/fdstream.hxx>
#include <libbutl/filesystem.hxx>
#include <libbutl/tab-parser.hxx>
#include <libbutl/manifest-parser.hxx>
#include <libbpkg/manifest.hxx>
#include <libbrep/package.hxx>
#include <libbrep/package-odb.hxx>
#include <libbrep/database-lock.hxx>
#include <load/load-options.hxx>
#include <load/options-types.hxx>
using std::cout;
using std::cerr;
using std::endl;
using namespace std::this_thread;
using namespace odb::core;
using namespace butl;
using namespace bpkg;
using namespace brep;
using manifest_name_values = vector<manifest_name_value>;
// Operation failed, diagnostics has already been issued.
//
struct failed {};
static const char* help_info (
" info: run 'brep-load --help' for more information");
static const path packages ("packages.manifest");
static const path repositories ("repositories.manifest");
// Retry executing bpkg on recoverable errors for about 10 seconds.
//
// Should we just exit with some "bpkg recoverable" code instead and leave it
// to the caller to perform retries? Feels like it's better to handle such
// errors ourselves rather than to complicate every caller. Note that having
// some frequently updated prerequisite repository can make these errors quite
// probable, even if the internal repositories are rarely updated.
//
static const size_t bpkg_retries (10);
static const std::chrono::seconds bpkg_retry_timeout (1);
struct internal_repository
{
repository_location location;
string display_name;
repository_location cache_location;
optional<string> fingerprint;
bool buildable = true;
path
packages_path () const {return cache_location.path () / packages;}
path
repositories_path () const {return cache_location.path () / repositories;}
};
using internal_repositories = vector<internal_repository>;
// Parse loadtab file.
//
// loadtab consists of lines in the following format:
//
// <remote-repository-location> <display-name> cache:<local-repository-location> [fingerprint:<fingerprint>] [buildable:(yes|no)]
//
// Note that if the remote repository location is a pkg repository, then the
// repository cache should be its local copy. Otherwise, the cache directory
// is expected to contain just repositories.manifest and packages.manifest
// files as dumped by bpkg-rep-info, for example:
//
// $ bpkg rep-info --manifest
// --repositories-file repositories.manifest
// --packages-file packages.manifest
// <remote-repository-location>
//
// Specifically, the packages.manifest is not a pkg package manifest list. It
// contains a raw list of package manifests that may contain values forbidden
// for the pkg package manifest list (description-file, changes-file) and may
// omit the required ones (sha256sum, description-type).
//
// @@ Latter, we may also want to support loading bpkg repositories using
// manifest files produced by bpkg-rep-info command. This, in particular,
// will allow handling CI requests for bpkg repositories.
//
// The current thinking is that the CI handler will be able to "suggest"
// this using (the planned) cache:dir+file:// form.
//
static internal_repositories
load_repositories (path p)
{
internal_repositories repos;
if (p.relative ())
p.complete ();
try
{
ifdstream ifs (p);
tab_parser parser (ifs, p.string ());
tab_fields tl;
while (!(tl = parser.next ()).empty ())
{
size_t n (tl.size ()); // Fields count.
size_t i (0); // The field currently being processed.
// Report an error for the field currently being processed. If i == n
// then we refer to the end-of-line column (presumably reporting a missed
// field).
//
auto bad_line = [&p, &tl, &i, n] (const string& d, size_t offset = 0)
{
// Offset beyond the end-of-line is meaningless.
//
assert (i < n || (i == n && offset == 0));
cerr << p << ':' << tl.line << ':'
<< (i == n
? tl.end_column
: tl[i].column + offset)
<< ": error: " << d << endl;
throw failed ();
};
internal_repository r;
try
{
r.location = repository_location (tl[i].value);
}
catch (const invalid_argument& e)
{
bad_line (e.what ());
}
if (r.location.local ())
bad_line ("local repository location");
for (const auto& rp: repos)
if (rp.location.canonical_name () == r.location.canonical_name ())
bad_line ("duplicate canonical name");
// Display name field is a required one.
//
if (++i == n)
bad_line ("no display name found");
r.display_name = move (tl[i++].value);
// Parse options, that have <name>:<value> form. Currently defined
// options are cache (mandatory for now), fingerprint, and buildable.
//
for (; i < n; ++i)
{
string nv (tl[i].value);
size_t vp;
if (strncmp (nv.c_str (), "cache:", vp = 6) == 0)
{
if (!r.cache_location.empty ())
bad_line ("cache option redefinition");
try
{
// If the internal repository cache path is relative, then
// calculate its absolute path. Such path is considered to be
// relative to the configuration file directory path so result is
// independent from whichever directory is current for the loader
// process. Note that the resulting absolute path should be a valid
// repository location.
//
dir_path cache_path (string (nv, vp));
if (cache_path.relative ())
cache_path = p.directory () / cache_path;
// A non-pkg repository cache is not a real repository (see
// above). We create the location of the dir type for such a cache
// to distinguish it when it comes to the manifest files parsing.
//
r.cache_location = repository_location (
repository_url (cache_path.string ()),
r.location.type () == repository_type::pkg
? r.location.type ()
: repository_type::dir);
// Created from the absolute path repository location can not be
// other than absolute.
//
assert (r.cache_location.absolute ());
}
catch (const invalid_path& e) // Thrown by dir_path().
{
bad_line (string ("invalid cache path: ") + e.what ());
}
catch (const invalid_argument& e) // Thrown by repository_*().
{
bad_line (string ("invalid cache path: ") + e.what ());
}
if (!file_exists (r.packages_path ()))
bad_line ("packages.manifest file does not exist");
if (!file_exists (r.repositories_path ()))
bad_line ("repositories.manifest file does not exist");
}
else if (strncmp (nv.c_str (), "fingerprint:", vp = 12) == 0)
{
if (r.fingerprint)
bad_line ("fingerprint option redefinition");
r.fingerprint = string (nv, vp);
// Sanity check.
//
if (!r.fingerprint->empty ())
{
try
{
fingerprint_to_sha256 (*r.fingerprint);
}
catch (const invalid_argument&)
{
bad_line ("invalid fingerprint");
}
}
}
else if (strncmp (nv.c_str (), "buildable:", vp = 10) == 0)
{
string v (nv, vp);
r.buildable = (v == "yes");
if (!r.buildable && v != "no")
bad_line ("invalid buildable option value");
}
else
bad_line ("invalid option '" + nv + '\'');
}
// For now cache option is mandatory.
//
if (r.cache_location.empty ())
bad_line ("no cache option found");
repos.emplace_back (move (r));
}
}
catch (const tab_parsing& e)
{
cerr << e << endl;
throw failed ();
}
catch (const io_error& e)
{
cerr << "error: unable to read " << p << ": " << e << endl;
throw failed ();
}
return repos;
}
// Check if repositories persistent state is outdated. If any repository
// differes from its persistent state or there is a persistent repository
// which is not listed in configuration file then the whole persistent
// state will be recreated. Will consider optimization later when the
// package model, including search related objects, settles down.
//
static bool
changed (const string& tenant,
const internal_repositories& repos,
database& db)
{
strings names;
for (const internal_repository& r: repos)
{
shared_ptr<repository> pr (
db.find<repository> (repository_id (tenant,
r.location.canonical_name ())));
if (pr == nullptr ||
r.location.string () != pr->location.string () ||
r.display_name != pr->display_name ||
r.cache_location.path () != pr->cache_location.path () ||
r.buildable != pr->buildable ||
file_mtime (r.packages_path ()) != pr->packages_timestamp ||
file_mtime (r.repositories_path ()) != pr->repositories_timestamp ||
!pr->internal)
return true;
names.emplace_back (r.location.canonical_name ());
}
using query = query<repository>;
// Check if there is an internal repository not being listed in the
// configuration file.
//
return
!db.query<repository> (
query::id.tenant == tenant &&
query::internal &&
!query::id.canonical_name.in_range (names.begin (),
names.end ())).empty ();
}
// Start 'bpkg rep-info [options] <repository_location>' process.
//
static process
repository_info (const options& lo, const string& rl, const cstrings& options)
{
cstrings args {lo.bpkg ().string ().c_str (), "rep-info"};
args.insert (args.end (), options.begin (), options.end ());
for (const string& o: lo.bpkg_option ())
args.push_back (o.c_str ());
args.push_back (rl.c_str ());
args.push_back (nullptr);
try
{
return process (args.data (), 0, -1, 2);
}
catch (const process_error& e)
{
cerr << "error: unable to execute " << args[0] << ": " << e << endl;
if (e.child)
exit (1);
throw failed ();
}
}
// Load the repository packages from the packages.manifest file and persist
// the repository. Should be called once per repository.
//
static void
load_packages (const options& lo,
const shared_ptr<repository>& rp,
const repository_location& cl,
database& db,
bool ignore_unknown,
const manifest_name_values& overrides,
const string& overrides_name)
{
// packages_timestamp other than timestamp_nonexistent signals the
// repository packages are already loaded.
//
assert (rp->packages_timestamp == timestamp_nonexistent);
vector<package_manifest> pms;
assert (!cl.empty ());
path p (cl.path () / packages);
try
{
ifdstream ifs (p);
rp->packages_timestamp = file_mtime (p);
manifest_parser mp (ifs, p.string ());
// If the repository cache directory is not a pkg repository, then the
// packages.manifest file it contains is a raw list of the package
// manifests that we need to parse manually (see above).
//
if (cl.type () != repository_type::pkg)
{
// We put no restrictions on the manifest values presence since it's not
// critical for displaying and building if the packages omit some
// manifest values (see libbpkg/manifest.hxx for details). Note, though,
// that we expect dependency constraints to be complete.
//
for (manifest_name_value nv (mp.next ()); !nv.empty (); nv = mp.next ())
pms.emplace_back (
mp,
move (nv),
ignore_unknown,
false /* complete_values */,
package_manifest_flags::forbid_incomplete_values);
}
else
pms = pkg_package_manifests (mp, ignore_unknown);
}
catch (const io_error& e)
{
cerr << "error: unable to read " << p << ": " << e << endl;
throw failed ();
}
using brep::dependency;
using brep::dependency_alternative;
using brep::dependency_alternatives;
const string& tenant (rp->tenant);
for (package_manifest& pm: pms)
{
shared_ptr<package> p (
db.find<package> (package_id (tenant, pm.name, pm.version)));
// sha256sum should always be present if the package manifest comes from
// the packages.manifest file belonging to the pkg repository.
//
assert (pm.sha256sum || cl.type () != repository_type::pkg);
if (p == nullptr)
{
// Apply the package manifest overrides.
//
if (!overrides.empty ())
try
{
pm.override (overrides, overrides_name);
}
catch (const manifest_parsing& e)
{
cerr << "error: unable to override " << pm.name << ' ' << pm.version
<< " manifest: " << e << endl;
throw failed ();
}
// Convert the package manifest build configurations (contain public
// keys data) into the brep's build package configurations (contain
// public key object lazy pointers). Keep the bot key lists empty if
// the package is not buildable.
//
package_build_configs build_configs;
if (!pm.build_configs.empty ())
{
build_configs.reserve (pm.build_configs.size ());
for (bpkg::build_package_config& c: pm.build_configs)
{
build_configs.emplace_back (move (c.name),
move (c.arguments),
move (c.comment),
move (c.builds),
move (c.constraints),
move (c.auxiliaries),
package_build_bot_keys (),
move (c.email),
move (c.warning_email),
move (c.error_email));
}
}
if (rp->internal)
{
// Create internal package object.
//
// Return nullopt if the text is in a file (can happen if the
// repository is of a type other than pkg) or if the type is not
// recognized (can only happen in the "ignore unknown" mode).
//
auto to_typed_text = [&cl, ignore_unknown] (typed_text_file&& v)
{
optional<typed_text> r;
// The description value should not be of the file type if the
// package manifest comes from the pkg repository.
//
assert (!v.file || cl.type () != repository_type::pkg);
if (!v.file)
{
// Cannot throw since the manifest parser has already verified the
// effective type in the same "ignore unknown" mode.
//
optional<text_type> t (v.effective_type (ignore_unknown));
// If the description type is unknown (which may be the case for
// some "transitional" period and only if --ignore-unknown is
// specified) we just silently drop the description.
//
assert (t || ignore_unknown);
if (t)
r = typed_text {move (v.text), *t};
}
return r;
};
// Convert descriptions.
//
optional<typed_text> ds (
pm.description
? to_typed_text (move (*pm.description))
: optional<typed_text> ());
optional<typed_text> pds (
pm.package_description
? to_typed_text (move (*pm.package_description))
: optional<typed_text> ());
// Merge changes into a single typed text object.
//
// If the text type is not recognized for any changes entry or some
// entry refers to a file, then assume that no changes are specified.
//
optional<typed_text> chn;
for (auto& c: pm.changes)
{
optional<typed_text> tc (to_typed_text (move (c)));
if (!tc)
{
chn = nullopt;
break;
}
if (!chn)
{
chn = move (*tc);
}
else
{
// Should have failed while parsing the manifest otherwise.
//
assert (tc->type == chn->type);
string& v (chn->text);
assert (!v.empty ()); // Changes manifest value cannot be empty.
if (v.back () != '\n')
v += '\n'; // Always have a blank line as a separator.
v += '\n';
v += tc->text;
}
}
dependencies tds;
for (auto& das: pm.dependencies)
{
dependency_alternatives tdas (das.buildtime, move (das.comment));
for (auto& da: das)
{
dependency_alternative tda (move (da.enable),
move (da.reflect),
move (da.prefer),
move (da.accept),
move (da.require));
for (auto& d: da)
{
package_name& n (d.name);
// Ignore special build2 and bpkg dependencies. We may not have
// packages for them and also showing them for every package is
// probably not very helpful.
//
if (das.buildtime && (n == "build2" || n == "bpkg"))
continue;
// The package member will be assigned during dependency
// resolution procedure.
//
tda.push_back (dependency {move (n),
move (d.constraint),
nullptr /* package */});
}
if (!tda.empty ())
tdas.push_back (move (tda));
}
if (!tdas.empty ())
tds.push_back (move (tdas));
}
small_vector<brep::test_dependency, 1> ts;
if (!pm.tests.empty ())
{
ts.reserve (pm.tests.size ());
for (bpkg::test_dependency& td: pm.tests)
ts.emplace_back (move (td.name),
td.type,
td.buildtime,
move (td.constraint),
move (td.enable),
move (td.reflect));
}
// Cache before the package name is moved.
//
package_name project (pm.effective_project ());
// If the package is buildable, then save the package manifest's
// common and build configuration-specific bot keys into the database
// and translate the key data lists into the lists of the public key
// object lazy pointers.
//
package_build_bot_keys bot_keys;
if (rp->buildable)
{
// Save the specified bot keys into the database as public key
// objects, unless they are already persisted. Translate these keys
// into the public key object lazy pointers.
//
auto keys_to_objects = [&lo,
&pm,
&tenant,
&db] (strings&& keys)
{
package_build_bot_keys r;
if (keys.empty ())
return r;
r.reserve (keys.size ());
for (string& key: keys)
{
// Calculate the key fingerprint.
//
string fp;
try
{
openssl os (path ("-"), path ("-"), 2,
lo.openssl (),
"pkey",
lo.openssl_option (), "-pubin", "-outform", "DER");
os.out << key;
os.out.close ();
fp = sha256 (os.in).string ();
os.in.close ();
if (!os.wait ())
{
cerr << "process " << lo.openssl () << ' ' << *os.exit
<< endl;
throw io_error ("");
}
}
catch (const io_error&)
{
cerr << "error: unable to convert custom build bot public key "
<< "for package " << pm.name << ' ' << pm.version << endl
<< " info: key:" << endl
<< key << endl;
throw failed ();
}
catch (const process_error& e)
{
cerr << "error: unable to convert custom build bot public key "
<< "for package " << pm.name << ' ' << pm.version << ": "
<< e << endl;
throw failed ();
}
// Try to find the public_key object for the calculated
// fingerprint. If it doesn't exist, then create and persist the
// new object.
//
public_key_id id (tenant, move (fp));
shared_ptr<public_key> k (db.find<public_key> (id));
if (k == nullptr)
{
k = make_shared<public_key> (move (id.tenant),
move (id.fingerprint),
move (key));
db.persist (k);
}
r.push_back (move (k));
}
return r;
};
bot_keys = keys_to_objects (move (pm.build_bot_keys));
assert (build_configs.size () == pm.build_configs.size ());
for (size_t i (0); i != build_configs.size (); ++i)
build_configs[i].bot_keys =
keys_to_objects (move (pm.build_configs[i].bot_keys));
}
p = make_shared<package> (
move (pm.name),
move (pm.version),
move (pm.upstream_version),
move (project),
pm.priority ? move (*pm.priority) : priority (),
move (pm.summary),
move (pm.license_alternatives),
move (pm.topics),
move (pm.keywords),
move (ds),
move (pds),
move (chn),
move (pm.url),
move (pm.doc_url),
move (pm.src_url),
move (pm.package_url),
move (pm.email),
move (pm.package_email),
move (pm.build_email),
move (pm.build_warning_email),
move (pm.build_error_email),
move (tds),
move (pm.requirements),
move (ts),
move (pm.builds),
move (pm.build_constraints),
move (pm.build_auxiliaries),
move (bot_keys),
move (build_configs),
move (pm.location),
move (pm.fragment),
move (pm.sha256sum),
rp);
}
else
// Create external package object.
//
p = make_shared<package> (move (pm.name),
move (pm.version),
move (pm.builds),
move (pm.build_constraints),
move (pm.build_auxiliaries),
move (build_configs),
rp);
db.persist (p);
}
else
{
// As soon as internal repositories get loaded first, the internal
// package can duplicate an internal package only.
//
assert (!rp->internal || p->internal ());
if (rp->internal)
{
// Note that the sha256sum manifest value can only be present if the
// package comes from the pkg repository.
//
if (pm.sha256sum)
{
// Save the package sha256sum if it is not present yet, match
// otherwise.
//
if (!p->sha256sum)
p->sha256sum = move (pm.sha256sum);
else if (*pm.sha256sum != *p->sha256sum)
cerr << "warning: sha256sum mismatch for package " << p->name
<< " " << p->version << endl
<< " info: " << p->internal_repository.load ()->location
<< " has " << *p->sha256sum << endl
<< " info: " << rp->location << " has " << *pm.sha256sum
<< endl;
}
// A non-stub package is buildable if belongs to at least one
// buildable repository (see libbrep/package.hxx for details). Note
// that if this is an external test package it will be marked as
// unbuildable later (see resolve_dependencies() for details).
//
if (rp->buildable && !p->buildable && !p->stub ())
{
p->buildable = true;
p->unbuildable_reason = nullopt;
}
}
p->other_repositories.push_back (rp);
db.update (p);
}
}
db.persist (rp); // Save the repository state.
}
// Load the repository manifest values from the repositories.manifest file.
// Unless this is a shallow load, also load prerequsite repositories and
// their complements state. Update the repository persistent state to save
// changed members. Should be called once per persisted internal repository.
//
static void
load_repositories (const options& lo,
const shared_ptr<repository>& rp,
const repository_location& cl,
database& db,
bool ignore_unknown,
bool shallow)
{
// repositories_timestamp other than timestamp_nonexistent signals that
// repository prerequisites are already loaded.
//
assert (rp->repositories_timestamp == timestamp_nonexistent);
const string& tenant (rp->tenant);
// Repository is already persisted by the load_packages() function call.
//
assert (db.find<repository> (
repository_id (tenant, rp->canonical_name)) != nullptr);
pkg_repository_manifests rpm;
assert (!cl.empty ());
path p (cl.path () / repositories);
try
{
ifdstream ifs (p);
rp->repositories_timestamp = file_mtime (p);
manifest_parser mp (ifs, p.string ());
rpm = pkg_repository_manifests (mp, ignore_unknown);
if (rpm.empty ())
rpm.emplace_back (repository_manifest ()); // Add the base repository.
}
catch (const io_error& e)
{
cerr << "error: unable to read " << p << ": " << e << endl;
throw failed ();
}
for (auto& rm: rpm)
{
if (rm.effective_role () == repository_role::prerequisite &&
!rp->internal)
continue; // Ignore the external repository prerequisite entry.
if (rm.effective_role () == repository_role::base)
{
assert (rp->location.remote () && !rp->interface_url);
// Update the base repository with manifest values.
//
rp->interface_url = rm.effective_url (rp->location);
// @@ Should we throw if url is not available for external repository ?
// Can, basically, repository be available on the web but have no web
// interface associated ?
//
// Yes, there can be no web interface. So we should just not form
// links to packages from such repos.
//
if (rp->interface_url)
{
// Normalize web interface url adding trailing '/' if not present.
//
auto& u (*rp->interface_url);
assert (!u.empty ());
if (u.back () != '/')
u += '/';
}
if (rp->internal)
{
rp->email = move (rm.email);
rp->summary = move (rm.summary);
rp->description = move (rm.description);
// Mismatch of the repository manifest and the certificate information
// can be the result of racing condition.
//
// @@ Need to address properly while fully moving to the bpkg-based
// fetching.
// @@ Shouldn't we dedicate a specific exit code for such situations?
//
if (static_cast<bool> (rm.certificate) !=
static_cast<bool> (rp->certificate))
{
cerr << "error: signing status mismatch for internal repository "
<< rp->location << endl
<< " info: try again" << endl;
throw failed ();
}
if (rm.certificate)
rp->certificate->pem = move (*rm.certificate);
}
continue;
}
// Load prerequisite or complement repository unless this is a shallow
// load.
//
if (shallow)
continue;
assert (!rm.location.empty ());
repository_location rl;
auto bad_location = [&rp, &rm] ()
{
cerr << "error: invalid prerequisite repository location "
<< rm.location << endl
<< " info: base (internal) repository location is "
<< rp->location << endl;
throw failed ();
};
try
{
// Absolute path location make no sense for the web interface.
//
if (rm.location.absolute ())
bad_location ();
// Convert the relative repository location to remote one, leave remote
// location unchanged.
//
rl = repository_location (rm.location, rp->location);
}
catch (const invalid_argument&)
{
bad_location ();
}
const auto& cn (rl.canonical_name ());
// Add repository to prerequisites or complements member of the dependent
// repository.
//
auto& rs (rm.effective_role () == repository_role::prerequisite
? rp->prerequisites
: rp->complements);
rs.emplace_back (db, repository_id (tenant, cn));
shared_ptr<repository> pr (
db.find<repository> (repository_id (tenant, cn)));
if (pr != nullptr)
// The prerequisite repository is already loaded.
//
continue;
pr = make_shared<repository> (tenant, move (rl));
// If the base repository is internal and the prerequsite repository
// location is a relative path, then calculate its cache location.
//
if (rp->internal && rm.location.relative ())
{
// For an internal repository the cache location always comes from the
// loadtab file.
//
assert (cl.path () == rp->cache_location.path ());
try
{
pr->cache_location = repository_location (rm.location, cl);
}
catch (const invalid_argument&)
{
cerr << "error: can't obtain cache location for prerequisite "
<< "repository '" << rm.location << "'" << endl
<< " info: base (internal) repository location is "
<< rp->location << endl
<< " info: base repository cache location is " << cl << endl;
throw failed ();
}
}
// If the (external) prerequisite repository cache location is empty, then
// check if the repository is local and, if that's the case, use its
// location as a cache location. Otherwise, fetch the repository
// information creating a temporary cache for it.
//
auto_rmdir cdr; // Remove the temporary cache after the repo load.
repository_location cl; // Repository temporary cache location.
if (pr->cache_location.empty ())
{
if (pr->location.local ())
{
pr->cache_location = pr->location;
}
else
{
dir_path cd;
try
{
cd = dir_path::temp_path ("brep-load-cache");
}
catch (const system_error& e)
{
cerr << "unable to obtain temporary directory: " << e;
throw failed ();
}
// It's highly unlikely but still possible that the temporary cache
// directory already exists. This can only happen due to the unclean
// loader termination. Let's remove it and retry.
//
try
{
if (try_mkdir (cd) == mkdir_status::already_exists)
{
try_rmdir_r (cd);
if (try_mkdir (cd) == mkdir_status::already_exists)
throw_generic_error (EEXIST);
}
}
catch (const system_error& e)
{
cerr << "unable to create directory '" << cd << "': " << e;
throw failed ();
}
cdr = auto_rmdir (cd);
path rf (cd / repositories);
path pf (cd / packages);
// Note that the fetch timeout can be overridden via --bpkg-option.
//
cstrings args {
"--fetch-timeout", "60", // 1 minute.
"--deep",
"--manifest",
"--repositories",
"--repositories-file", rf.string ().c_str (),
"--packages",
"--packages-file", pf.string ().c_str ()};
if (rm.trust)
{
args.push_back ("--trust");
args.push_back (rm.trust->c_str ());
}
// Always add it, so bpkg won't try to prompt for a certificate
// authentication if the fingerprint doesn't match.
//
args.push_back ("--trust-no");
// Retry bpkg-rep-info on recoverable errors, for a while.
//
for (size_t i (0);; ++i)
{
if (i != 0)
{
// Let's follow up the bpkg's diagnostics with the number of
// retries left.
//
cerr << bpkg_retries - i + 1 << " retries left" << endl;
sleep_for (bpkg_retry_timeout);
}
process p (repository_info (lo, pr->location.string (), args));
try
{
// Bail out from the retry loop on success.
//
if (p.wait ())
break;
// Assume the child issued diagnostics if terminated normally.
//
if (p.exit->normal ())
{
// Retry the manifests fetch on a recoverable error, unless the
// retries limit is reached.
//
if (p.exit->code () == 2 && i != bpkg_retries)
continue;
}
else
cerr << "process " << lo.bpkg () << " " << *p.exit << endl;
cerr << "error: unable to fetch manifests for "
<< pr->canonical_name << endl
<< " info: base repository location is "
<< rp->location << endl;
throw failed ();
}
catch (const process_error& e)
{
cerr << "error: unable to fetch manifests for "
<< pr->canonical_name << ": " << e << endl;
throw failed ();
}
}
// Note that this is a non-pkg repository cache and so we create the
// dir repository location (see load_repositories(path) for details).
//
cl = repository_location (repository_url (cd.string ()),
repository_type::dir);
}
}
// We don't apply overrides to the external packages.
//
load_packages (lo,
pr,
!pr->cache_location.empty () ? pr->cache_location : cl,
db,
ignore_unknown,
manifest_name_values () /* overrides */,
"" /* overrides_name */);
load_repositories (lo,
pr,
!pr->cache_location.empty () ? pr->cache_location : cl,
db,
ignore_unknown,
false /* shallow */);
}
db.update (rp);
}
// Check if the package is available from the specified repository,
// its prerequisite repositories, or one of their complements,
// recursively.
//
static bool
find (const lazy_shared_ptr<repository>& r,
const package& p,
bool prereq = true)
{
assert (r != nullptr);
const auto& o (p.other_repositories);
if (r == p.internal_repository ||
find (o.begin (), o.end (), r) != o.end ())
return true;
auto rp (r.load ());
for (const auto& cr: rp->complements)
{
if (find (lazy_shared_ptr<repository> (cr), p, false))
return true;
}
if (prereq)
{
for (auto pr: rp->prerequisites)
{
if (find (lazy_shared_ptr<repository> (pr), p, false))
return true;
}
}
return false;
}
// Try to resolve package regular dependencies and external tests. Make sure
// that the best matching dependency belongs to the package repositories,
// their complements, recursively, or their immediate prerequisite
// repositories (only for regular dependencies). Set the buildable flag to
// false for the resolved external tests packages. Leave the package member
// NULL for unresolved dependencies.
//
static void
resolve_dependencies (package& p, database& db)
{
using brep::dependency;
using brep::dependency_alternative;
using brep::dependency_alternatives;
using brep::test_dependency;
// Resolve dependencies for internal packages only.
//
assert (p.internal ());
auto resolve = [&p, &db] (dependency& d, bool test)
{
// Dependency should not be resolved yet.
//
assert (d.package == nullptr);
using query = query<package>;
query q (query::id.name == d.name);
const auto& vm (query::id.version);
if (d.constraint)
{
const version_constraint& c (*d.constraint);
assert (c.complete ());
query qs (compare_version_eq (vm,
canonical_version (wildcard_version),
false /* revision */));
if (c.min_version && c.max_version && *c.min_version == *c.max_version)
{
const version& v (*c.min_version);
q = q && (compare_version_eq (vm,
canonical_version (v),
v.revision.has_value ()) ||
qs);
}
else
{
query qr (true);
if (c.min_version)
{
const version& v (*c.min_version);
canonical_version cv (v);
bool rv (v.revision);
if (c.min_open)
qr = compare_version_gt (vm, cv, rv);
else
qr = compare_version_ge (vm, cv, rv);
}
if (c.max_version)
{
const version& v (*c.max_version);
canonical_version cv (v);
bool rv (v.revision);
if (c.max_open)
qr = qr && compare_version_lt (vm, cv, rv);
else
qr = qr && compare_version_le (vm, cv, rv);
}
q = q && (qr || qs);
}
}
for (const auto& pp: db.query<package> (q + order_by_version_desc (vm)))
{
if (find (p.internal_repository, pp, !test))
{
d.package.reset (db, pp.id);
// If the resolved dependency is an external test, then mark it as
// such, unless it is a stub.
//
if (test)
{
shared_ptr<package> dp (d.package.load ());
if (!dp->stub ())
{
dp->buildable = false;
dp->unbuildable_reason = unbuildable_reason::test;
db.update (dp);
}
}
return true;
}
}
return false;
};
// Update the package state if any dependency is resolved.
//
bool update (false);
for (dependency_alternatives& das: p.dependencies)
{
for (dependency_alternative& da: das)
{
for (dependency& d: da)
{
if (resolve (d, false /* test */))
update = true;
}
}
}
for (test_dependency& td: p.tests)
{
if (resolve (td, true /* test */))
update = true;
}
if (update)
db.update (p);
}
// Verify that the unresolved dependencies can be ignored.
//
// Specifically, fail for an unresolved regular dependency, unless
// ignore_unresolved is true or this is a conditional dependency and either
// ignore_unresolved_cond argument is 'all' or it is 'tests' and the specified
// package is a tests, examples, or benchmarks package. Fail for an unresolved
// external test, unless ignore_unresolved or ignore_unresolved_tests is
// true. If ignore_unresolved_tests is true, then remove the unresolved tests
// entry from the package manifest. Should be called once per internal package
// after resolve_dependencies() is called for all of them.
//
static void
verify_dependencies (
package& p,
database& db,
bool ignore_unresolved,
bool ignore_unresolved_tests,
optional<ignore_unresolved_conditional_dependencies> ignore_unresolved_cond)
{
using brep::dependency;
using brep::dependency_alternative;
using brep::dependency_alternatives;
using brep::test_dependency;
// Verify dependencies for internal packages only.
//
assert (p.internal ());
auto bail = [&p] (const dependency& d, const string& what)
{
cerr << "error: can't resolve " << what << ' ' << d << " for the package "
<< p.name << ' ' << p.version << endl
<< " info: repository " << p.internal_repository.load ()->location
<< " appears to be broken" << endl;
throw failed ();
};
if (!ignore_unresolved)
{
// There must always be a reason why a package is not buildable.
//
assert (p.buildable || p.unbuildable_reason);
bool test (!p.buildable &&
*p.unbuildable_reason == unbuildable_reason::test);
for (dependency_alternatives& das: p.dependencies)
{
for (dependency_alternative& da: das)
{
for (dependency& d: da)
{
if (d.package == nullptr)
{
if (da.enable && ignore_unresolved_cond)
{
switch (*ignore_unresolved_cond)
{
case ignore_unresolved_conditional_dependencies::all: continue;
case ignore_unresolved_conditional_dependencies::tests:
{
if (test)
continue;
break;
}
}
}
bail (d, "dependency");
}
}
}
}
}
if (!ignore_unresolved || ignore_unresolved_tests)
{
// Update the package state if any test dependency is erased.
//
bool update (false);
for (auto i (p.tests.begin ()); i != p.tests.end (); )
{
test_dependency& td (*i);
if (td.package == nullptr)
{
if (!ignore_unresolved && !ignore_unresolved_tests)
bail (td, to_string (td.type));
if (ignore_unresolved_tests)
{
i = p.tests.erase (i);
update = true;
continue;
}
}
++i;
}
if (update)
db.update (p);
}
}
using package_ids = vector<package_id>;
// Make sure the package dependency chain doesn't contain the package id.
// Throw failed otherwise. Continue the chain with the package id and call
// itself recursively for each prerequisite of the package. Should be called
// once per internal package.
//
// @@ This should probably be eventually moved to bpkg.
//
static void
detect_dependency_cycle (const package_id& id,
package_ids& chain,
database& db)
{
// Package of one version depending on the same package of another version
// is something obscure. So the comparison is made up to a package name.
//
auto pr = [&id] (const package_id& i) -> bool {return i.name == id.name;};
auto i (find_if (chain.begin (), chain.end (), pr));
if (i != chain.end ())
{
cerr << "error: package dependency cycle: ";
auto prn = [&db] (const package_id& id)
{
shared_ptr<package> p (db.load<package> (id));
assert (p->internal () || !p->other_repositories.empty ());
shared_ptr<repository> r (
p->internal ()
? p->internal_repository.load ()
: p->other_repositories[0].load ());
cerr << p->name << " " << p->version << " (" << r->canonical_name << ")";
};
for (; i != chain.end (); ++i)
{
prn (*i);
cerr << " -> ";
}
prn (id);
cerr << endl;
throw failed ();
}
// Note that the package can be an unresolved dependency and may not be
// present in the database.
//
if (shared_ptr<package> p = db.find<package> (id))
{
chain.push_back (id);
for (const auto& das: p->dependencies)
{
for (const auto& da: das)
{
for (const auto& d: da)
detect_dependency_cycle (d.package.object_id (), chain, db);
}
}
chain.pop_back ();
}
}
// Return the certificate information for a signed repository and nullopt for
// an unsigned. Note that a repository at the remote location is not trusted
// unless the certificate fingerprint is provided (which also means it should
// either be signed or the wildcard fingerprint specified). A local repository
// location is, instead, trusted by default. If the fingerprint is provided
// then the repository is authenticated regardless of the location type.
//
static optional<certificate>
certificate_info (const options& lo,
const repository_location& rl,
const optional<string>& fp)
{
cstrings args {
"--cert-fingerprint",
"--cert-name",
"--cert-organization",
"--cert-email",
"-q"}; // Don't print info messages.
const char* trust ("--trust-no");
if (fp)
{
if (!fp->empty ())
{
args.push_back ("--trust");
args.push_back (fp->c_str ());
}
else
trust = "--trust-yes";
if (!rl.remote ())
{
args.push_back ("--auth");
args.push_back ("all");
}
}
args.push_back (trust);
// Retry bpkg-rep-info on recoverable errors, for a while.
//
for (size_t i (0);; ++i)
{
if (i != 0)
{
// Let's follow up the bpkg's diagnostics with the number of retries
// left.
//
cerr << bpkg_retries - i + 1 << " retries left" << endl;
sleep_for (bpkg_retry_timeout);
}
try
{
process pr (repository_info (lo, rl.string (), args));
try
{
ifdstream is (
move (pr.in_ofd),
ifdstream::failbit | ifdstream::badbit | ifdstream::eofbit);
optional<certificate> cert;
string fingerprint;
getline (is, fingerprint);
if (!fingerprint.empty ())
{
cert = certificate ();
cert->fingerprint = move (fingerprint);
getline (is, cert->name);
getline (is, cert->organization);
getline (is, cert->email);
}
else
{
// Read out empty lines.
//
string s;
getline (is, s); // Name.
getline (is, s); // Organization.
getline (is, s); // Email.
}
// Check that EOF is successfully reached.
//
is.exceptions (ifdstream::failbit | ifdstream::badbit);
if (is.peek () != ifdstream::traits_type::eof ())
throw io_error ("");
is.close ();
if (pr.wait ())
return cert;
// Fall through.
//
}
catch (const io_error&)
{
// Child exit status doesn't matter. Just wait for the process
// completion and fall through.
//
pr.wait ();
}
// Assume the child issued diagnostics if terminated normally.
//
if (pr.exit->normal ())
{
// Retry the certificate fetch on a recoverable error, unless the
// retries limit is reached.
//
if (pr.exit->code () == 2 && i != bpkg_retries)
continue;
}
else
cerr << "process " << lo.bpkg () << " " << *pr.exit << endl;
cerr << "error: unable to fetch certificate information for "
<< rl.canonical_name () << endl;
// Fall through.
}
catch (const process_error& e)
{
cerr << "error: unable to fetch certificate information for "
<< rl.canonical_name () << ": " << e << endl;
// Fall through.
}
throw failed ();
}
}
int
main (int argc, char* argv[])
try
{
// On POSIX ignore SIGPIPE which is signaled to a pipe-writing process if
// the pipe reading end is closed. Note that by default this signal
// terminates a process. Also note that there is no way to disable this
// behavior on a file descriptor basis or for the write() function call.
//
if (signal (SIGPIPE, SIG_IGN) == SIG_ERR)
{
cerr << "error: unable to ignore broken pipe (SIGPIPE) signal: "
<< system_error (errno, generic_category ()) << endl; // Sanitize.
throw failed ();
}
cli::argv_scanner scan (argc, argv, true);
options ops (scan);
// Version.
//
if (ops.version ())
{
cout << "brep-load " << BREP_VERSION_ID << endl
<< "libbrep " << LIBBREP_VERSION_ID << endl
<< "libbbot " << LIBBBOT_VERSION_ID << endl
<< "libbpkg " << LIBBPKG_VERSION_ID << endl
<< "libbutl " << LIBBUTL_VERSION_ID << endl
<< "Copyright (c) " << BREP_COPYRIGHT << "." << endl
<< "This is free software released under the MIT license." << endl;
return 0;
}
// Help.
//
if (ops.help ())
{
pager p ("brep-load help",
false,
ops.pager_specified () ? &ops.pager () : nullptr,
&ops.pager_option ());
print_usage (p.stream ());
// If the pager failed, assume it has issued some diagnostics.
//
return p.wait () ? 0 : 1;
}
if (argc < 2)
{
cerr << "error: configuration file expected" << endl
<< help_info << endl;
throw failed ();
}
if (argc > 2)
{
cerr << "error: unexpected argument encountered" << endl
<< help_info << endl;
throw failed ();
}
// By default the tenant is empty and assumes a single-tenant mode. Let's
// require the specified tenant to be non-empty.
//
const string& tnt (ops.tenant ());
if (ops.tenant_specified ())
{
if (tnt.empty ())
{
cerr << "error: empty tenant" << endl
<< help_info << endl;
throw failed ();
}
}
else
{
if (ops.existing_tenant ())
{
cerr << "error: --existing-tenant requires --tenant" << endl
<< help_info << endl;
throw failed ();
}
}
// Verify the --service-* options.
//
if (ops.service_id_specified ())
{
if (!ops.tenant_specified ())
{
cerr << "error: --service-id requires --tenant" << endl
<< help_info << endl;
throw failed ();
}
if (ops.service_type ().empty ())
{
cerr << "error: --service-id requires --service-type" << endl
<< help_info << endl;
throw failed ();
}
}
else
{
if (ops.service_type_specified ())
{
cerr << "error: --service-type requires --service-id" << endl
<< help_info << endl;
throw failed ();
}
if (ops.service_data_specified ())
{
cerr << "error: --service-data requires --service-id" << endl
<< help_info << endl;
throw failed ();
}
}
// Parse and validate overrides, if specified.
//
// Note that here we make sure that the overrides manifest is valid.
// Applying overrides to a specific package manifest may still fail (see
// package_manifest::validate_overrides() for details).
//
manifest_name_values overrides;
if (ops.overrides_file_specified ())
try
{
const string& name (ops.overrides_file ().string ());
ifdstream is (ops.overrides_file ());
manifest_parser mp (is, name);
overrides = parse_manifest (mp);
is.close ();
package_manifest::validate_overrides (overrides, name);
}
catch (const manifest_parsing& e)
{
cerr << "error: unable to parse overrides: " << e << endl;
throw failed ();
}
catch (const io_error& e)
{
cerr << "error: unable to read '" << ops.overrides_file () << "': " << e
<< endl;
throw failed ();
}
odb::pgsql::database db (
ops.db_user (),
ops.db_password (),
ops.db_name (),
ops.db_host (),
ops.db_port (),
"options='-c default_transaction_isolation=serializable'");
// Prevent several brep utility instances from updating the package database
// simultaneously.
//
database_lock l (db);
transaction t (db.begin ());
// Check that the package database schema matches the current one.
//
const string ds ("package");
if (schema_catalog::current_version (db, ds) != db.schema_version (ds))
{
cerr << "error: package database schema differs from the current one"
<< endl << " info: use brep-migrate to migrate the database" << endl;
throw failed ();
}
// Note: the interactive tenant implies private.
//
if (ops.interactive_specified ())
ops.private_ (true);
// Load the description of all the internal repositories from the
// configuration file.
//
internal_repositories irs (load_repositories (path (argv[1])));
if (ops.force () || changed (tnt, irs, db))
{
shared_ptr<tenant> t; // Not NULL in the --existing-tenant mode.
// Rebuild repositories persistent state from scratch.
//
// Note that in the single-tenant mode the tenant must be empty. In the
// multi-tenant mode all tenants, excluding the pre-created ones, must be
// non-empty. So in the single-tenant mode we erase all database objects
// (possibly from multiple tenants). Otherwise, cleanup the empty tenant
// and, unless in the --existing-tenant mode, the specified one.
//
if (tnt.empty ()) // Single-tenant mode.
{
db.erase_query<package> ();
db.erase_query<repository> ();
db.erase_query<public_key> ();
db.erase_query<tenant> ();
}
else // Multi-tenant mode.
{
// NOTE: don't forget to update ci_start::create() if changing anything
// here.
//
cstrings ts ({""});
// In the --existing-tenant mode make sure that the specified tenant
// exists, is not archived, not marked as unloaded, and is
// empty. Otherwise (not in the --existing-tenant mode), remove this
// tenant.
//
if (ops.existing_tenant ())
{
t = db.find<tenant> (tnt);
if (t == nullptr)
{
cerr << "error: unable to find tenant " << tnt << endl;
throw failed ();
}
if (t->archived)
{
cerr << "error: tenant " << tnt << " is archived" << endl;
throw failed ();
}
if (t->unloaded_timestamp)
{
cerr << "error: tenant " << tnt << " is marked as unloaded" << endl;
throw failed ();
}
size_t n (db.query_value<repository_count> (
query<repository_count>::id.tenant == tnt));
if (n != 0)
{
cerr << "error: tenant " << tnt << " is not empty" << endl;
throw failed ();
}
}
else
ts.push_back (tnt.c_str ());
db.erase_query<package> (
query<package>::id.tenant.in_range (ts.begin (), ts.end ()));
db.erase_query<repository> (
query<repository>::id.tenant.in_range (ts.begin (), ts.end ()));
db.erase_query<public_key> (
query<public_key>::id.tenant.in_range (ts.begin (), ts.end ()));
db.erase_query<tenant> (
query<tenant>::id.in_range (ts.begin (), ts.end ()));
}
// Craft the tenant service object from the --service-* options.
//
// In the --existing-tenant mode make sure that the specified service
// matches the service associated with the pre-created tenant and update
// the service data, if specified.
//
optional<tenant_service> service;
if (ops.service_id_specified ())
{
service = tenant_service (ops.service_id (),
ops.service_type (),
(ops.service_data_specified ()
? ops.service_data ()
: optional<string> ()));
if (ops.existing_tenant ())
{
assert (t != nullptr);
if (!t->service)
{
cerr << "error: no service associated with tenant " << tnt << endl;
throw failed ();
}
if (t->service->id != service->id || t->service->type != service->type)
{
cerr << "error: associated service mismatch for tenant " << tnt << endl <<
" info: specified service: " << service->id << ' '
<< service->type << endl <<
" info: associated service: " << t->service->id << ' '
<< t->service->type << endl;
throw failed ();
}
if (service->data)
{
t->service->data = move (service->data);
db.update (t);
}
}
}
// Persist the tenant.
//
// Note that if the tenant service is specified and some tenant with the
// same service id and type is already persisted, then we will end up with
// the `object already persistent` error and terminate with the exit code
// 1 (fatal error). We could potentially dedicate a special exit code for
// such a case, so that the caller may recognize it and behave accordingly
// (CI request handler can treat it as a client error rather than an
// internal error, etc). However, let's first see if it ever becomes a
// problem.
//
if (!ops.existing_tenant ())
db.persist (tenant (tnt,
ops.private_ (),
(ops.interactive_specified ()
? ops.interactive ()
: optional<string> ()),
move (service)));
// On the first pass over the internal repositories we load their
// certificate information and packages.
//
uint16_t priority (1);
for (const auto& ir: irs)
{
optional<certificate> cert;
if (ir.location.type () == repository_type::pkg)
cert = certificate_info (
ops,
!ir.cache_location.empty () ? ir.cache_location : ir.location,
ir.fingerprint);
shared_ptr<repository> r (
make_shared<repository> (tnt,
ir.location,
move (ir.display_name),
move (ir.cache_location),
move (cert),
ir.buildable,
priority++));
load_packages (ops,
r,
r->cache_location,
db,
ops.ignore_unknown (),
overrides,
ops.overrides_file ().string ());
}
// On the second pass over the internal repositories we load their
// (not yet loaded) manifest values, complement, and prerequisite
// repositories.
//
for (const auto& ir: irs)
{
shared_ptr<repository> r (
db.load<repository> (
repository_id (tnt, ir.location.canonical_name ())));
load_repositories (ops,
r,
r->cache_location,
db,
ops.ignore_unknown (),
ops.shallow ());
}
// Try to resolve the internal packages dependencies and verify that the
// unresolved ones can be ignored. Unless this is a shallow load, make
// sure there are no package dependency cycles.
//
{
session s;
using query = query<package>;
query q (query::id.tenant == tnt &&
query::internal_repository.canonical_name.is_not_null ());
for (auto& p: db.query<package> (q))
resolve_dependencies (p, db);
for (auto& p: db.query<package> (q))
{
verify_dependencies (
p,
db,
ops.shallow (),
ops.ignore_unresolv_tests (),
(ops.ignore_unresolv_cond_specified ()
? ops.ignore_unresolv_cond ()
: optional<ignore_unresolved_conditional_dependencies> ()));
}
if (!ops.shallow ())
{
package_ids chain;
for (const auto& p: db.query<package> (q))
detect_dependency_cycle (p.id, chain, db);
}
}
}
t.commit ();
return 0;
}
catch (const database_locked&)
{
cerr << "brep-load or brep-migrate is running" << endl;
return 2;
}
catch (const recoverable& e)
{
cerr << "recoverable database error: " << e << endl;
return 3;
}
catch (const cli::exception& e)
{
cerr << "error: " << e << endl << help_info << endl;
return 1;
}
catch (const failed&)
{
return 1; // Diagnostics has already been issued.
}
// Fully qualified to avoid ambiguity with odb exception.
//
catch (const std::exception& e)
{
cerr << "error: " << e << endl;
return 1;
}
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