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// file : bpkg/package -*- C++ -*-
// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef BPKG_PACKAGE
#define BPKG_PACKAGE
#include <map>
#include <set>
#include <ratio>
#include <chrono>
#include <type_traits> // static_assert
#include <odb/core.hxx>
#include <odb/nested-container.hxx>
#include <butl/timestamp>
#include <bpkg/types>
#include <bpkg/utility>
#pragma db model version(3, 3, closed)
namespace bpkg
{
// Compare two lazy pointers via the pointed-to object ids.
//
struct compare_lazy_ptr
{
template <typename P>
bool
operator() (const P& x, const P& y) const
{
return x.object_id () < y.object_id ();
}
};
// path
//
using optional_string = optional<string>;
using optional_path = optional<path>;
using optional_dir_path = optional<dir_path>;
#pragma db map type(path) as(string) \
to((?).string ()) from(bpkg::path (?))
#pragma db map type(optional_path) as(bpkg::optional_string) \
to((?) ? (?)->string () : bpkg::optional_string ()) \
from((?) ? bpkg::path (*(?)) : bpkg::optional_path ())
#pragma db map type(dir_path) as(string) \
to((?).string ()) from(bpkg::dir_path (?))
#pragma db map type(optional_dir_path) as(bpkg::optional_string) \
to((?) ? (?)->string () : bpkg::optional_string ()) \
from((?) ? bpkg::dir_path (*(?)) : bpkg::optional_dir_path ())
// timestamp
//
using butl::timestamp;
using butl::timestamp_unknown;
// Ensure that timestamp can be represented in nonoseconds without loss of
// accuracy, so the following ODB mapping is adequate.
//
static_assert (
std::ratio_greater_equal<timestamp::period,
std::chrono::nanoseconds::period>::value,
"The following timestamp ODB mapping is invalid");
// As pointed out in butl/timestamp we will overflow in year 2262, but by
// that time some larger basic type will be available for mapping.
//
#pragma db map type(timestamp) as(uint64_t) \
to(std::chrono::duration_cast<std::chrono::nanoseconds> ( \
(?).time_since_epoch ()).count ()) \
from(butl::timestamp ( \
std::chrono::duration_cast<butl::timestamp::duration> ( \
std::chrono::nanoseconds (?))))
// An image type that is used to map version to the database since
// there is no way to modify individual components directly. We have
// to define it before including <bpkg/manifest> since some value
// types that are defined there use version as their data members.
//
#pragma db value
struct _version
{
uint16_t epoch;
string canonical_upstream;
string canonical_release;
uint16_t revision;
string upstream;
optional<string> release;
};
}
#include <bpkg/manifest>
#include <bpkg/system-repository>
// Prevent assert() macro expansion in get/set expressions. This should
// appear after all #include directives since the assert() macro is
// redefined in each <assert.h> inclusion.
//
#ifdef ODB_COMPILER
# undef assert
# define assert assert
void assert (int);
#endif
namespace bpkg
{
// version
//
// Sometimes we need to split the version into two parts: the part
// that goes into the object id (epoch, canonical upstream, canonical
// release, revision) and the original upstream and release. This is what
// the canonical_version and upstream_version value types are for. Note that
// upstream_version derives from version and uses it as storage. The idea
// here is this: when we split the version, we often still want to have the
// "whole" version object readily accessible and that's exactly what this
// strange contraption is for. See available_package for an example
// on how everything fits together.
//
//
#pragma db value
struct canonical_version
{
uint16_t epoch;
string canonical_upstream;
string canonical_release;
uint16_t revision;
// By default SQLite3 uses BINARY collation for TEXT columns. So while this
// means we don't need to do anything special to make "absent" (~) and
// specified canonical releases compare properly, better make it explicit
// in case the Unicode Collation Algorithm (UCA, where '~' < 'a') becomes
// the default.
//
#pragma db member(canonical_release) options("COLLATE BINARY")
};
#pragma db value transient
struct upstream_version: version
{
#pragma db member(upstream_) virtual(string) \
get(this.upstream) \
set(this = bpkg::version (0, std::move (?), std::string (), 0))
#pragma db member(release_) virtual(optional_string) \
get(this.release) \
set(this = bpkg::version ( \
0, std::move (this.upstream), std::move (?), 0))
upstream_version () = default;
upstream_version (version v): version (move (v)) {}
upstream_version&
operator= (version v) {version& b (*this); b = v; return *this;}
void
init (const canonical_version& cv, const upstream_version& uv)
{
*this = version (cv.epoch, uv.upstream, uv.release, cv.revision);
assert (cv.canonical_upstream == canonical_upstream &&
cv.canonical_release == canonical_release);
}
};
#pragma db map type(version) as(_version) \
to(bpkg::_version{(?).epoch, \
(?).canonical_upstream, \
(?).canonical_release, \
(?).revision, \
(?).upstream, \
(?).release}) \
from(bpkg::version ((?).epoch, \
std::move ((?).upstream), \
std::move ((?).release), \
(?).revision))
using optional_version = optional<version>;
using _optional_version = optional<_version>;
#pragma db map type(optional_version) as(_optional_version) \
to((?) \
? bpkg::_version{(?)->epoch, \
(?)->canonical_upstream, \
(?)->canonical_release, \
(?)->revision, \
(?)->upstream, \
(?)->release} \
: bpkg::_optional_version ()) \
from((?) \
? bpkg::version ((?)->epoch, \
std::move ((?)->upstream), \
std::move ((?)->release), \
(?)->revision) \
: bpkg::optional_version ())
// repository_location
//
#pragma db map type(repository_location) as(string) \
to((?).string ()) from(bpkg::repository_location (?))
// repository
//
#pragma db object pointer(shared_ptr) session
class repository
{
public:
// We use a weak pointer for prerequisite repositories because we
// could have cycles. No cycles in complements, thought.
//
using complements_type =
std::set<lazy_shared_ptr<repository>, compare_lazy_ptr>;
using prerequisites_type =
std::set<lazy_weak_ptr<repository>, compare_lazy_ptr>;
string name; // Object id (canonical name).
repository_location location;
complements_type complements;
prerequisites_type prerequisites;
// Used to detect recursive fetching. Will probably be replaced
// by the 'repositories' file timestamp or hashsum later.
//
#pragma db transient
bool fetched = false;
public:
explicit
repository (repository_location l): location (move (l))
{
name = location.canonical_name ();
}
// Database mapping.
//
#pragma db member(name) id
#pragma db member(location) \
set(this.location = std::move (?); \
assert (this.name == this.location.canonical_name ()))
#pragma db member(complements) id_column("repository") \
value_column("complement") value_not_null
#pragma db member(prerequisites) id_column("repository") \
value_column("prerequisite") value_not_null
private:
friend class odb::access;
repository () = default;
};
#pragma db view object(repository) query(repository::name != "" && (?))
struct repository_count
{
#pragma db column("count(*)")
size_t result;
operator size_t () const {return result;}
};
// package_location
//
#pragma db value
struct package_location
{
using repository_type = bpkg::repository;
lazy_shared_ptr<repository_type> repository;
path location; // Relative to the repository.
};
// dependencies
//
#pragma db value(dependency_constraint) definition
#pragma db value(dependency) definition
#pragma db member(dependency::constraint) column("")
#pragma db value(dependency_alternatives) definition
using dependencies = vector<dependency_alternatives>;
// Wildcard version. Satisfies any dependency constraint and is represented
// as 0+0 (which is also the "stub version"; since a real version is always
// greater than the stub version, we reuse it to signify a special case).
//
extern const version wildcard_version;
// available_package
//
#pragma db value
struct available_package_id
{
string name;
canonical_version version;
available_package_id () = default;
available_package_id (string, const bpkg::version&);
};
bool
operator< (const available_package_id&, const available_package_id&);
#pragma db object pointer(shared_ptr) session
class available_package
{
public:
using version_type = bpkg::version;
available_package_id id;
upstream_version version;
// List of repositories to which this package version belongs (yes,
// in our world, it can be in multiple, unrelated repositories).
//
// Note that if the repository is the special root repository (its
// location is empty), then this is a transient (or "fake") object
// for an existing package archive or package directory. In this
// case the location is the path to the archive/directory and to
// determine which one it is, use file/dir_exists(). While on the
// topic of fake available_package objects, when one is created for
// a selected package (see make_available()), this list is left empty
// with the thinking being that since the package is already in at
// least fetched state, we shouldn't be needing its location.
//
vector<package_location> locations; //@@ Map?
// Package manifest data.
//
using dependencies_type = bpkg::dependencies;
dependencies_type dependencies;
// Present for non-transient objects only.
//
optional<string> sha256sum;
private:
#pragma db transient
mutable optional<version_type> system_version_;
public:
available_package (package_manifest&& m)
: id (move (m.name), m.version),
version (move (m.version)),
dependencies (move (m.dependencies)),
sha256sum (move (m.sha256sum)) {}
// Create a stub available package with a fixed system version. This
// constructor is only used to create transient/fake available packages
// based on the system selected packages.
//
available_package (string n, version_type sysv)
: id (move (n), wildcard_version),
version (wildcard_version),
system_version_ (sysv) {}
bool
stub () const {return version.compare (wildcard_version, true) == 0;}
// Return package system version if one has been discovered. Note that
// we do not implicitly assume a wildcard version.
//
const version_type*
system_version () const
{
if (!system_version_)
{
if (const system_package* sp = system_repository.find (id.name))
{
// Only cache if it is authoritative.
//
if (sp->authoritative)
system_version_ = sp->version;
else
return &sp->version;
}
}
return system_version_ ? &*system_version_ : nullptr;
}
// As above but also return an indication if the version information is
// authoritative.
//
pair<const version_type*, bool>
system_version_authoritative () const
{
const system_package* sp (system_repository.find (id.name));
if (!system_version_)
{
if (sp != nullptr)
{
// Only cache if it is authoritative.
//
if (sp->authoritative)
system_version_ = sp->version;
else
return make_pair (&sp->version, false);
}
}
return make_pair (system_version_ ? &*system_version_ : nullptr,
sp != nullptr ? sp->authoritative : false);
}
// Database mapping.
//
#pragma db member(id) id column("")
#pragma db member(version) set(this.version.init (this.id.version, (?)))
#pragma db member(locations) id_column("") value_column("") \
unordered value_not_null
// dependencies
//
using _dependency_key = odb::nested_key<dependency_alternatives>;
using _dependency_alternatives_type =
std::map<_dependency_key, dependency>;
#pragma db value(_dependency_key)
#pragma db member(_dependency_key::outer) column("dependency_index")
#pragma db member(_dependency_key::inner) column("index")
#pragma db member(dependencies) id_column("") value_column("")
#pragma db member(dependency_alternatives) \
virtual(_dependency_alternatives_type) \
after(dependencies) \
get(odb::nested_get (this.dependencies)) \
set(odb::nested_set (this.dependencies, std::move (?))) \
id_column("") key_column("") value_column("dep_")
private:
friend class odb::access;
available_package () = default;
};
#pragma db view object(available_package)
struct available_package_count
{
#pragma db column("count(*)")
size_t result;
operator size_t () const {return result;}
};
// Only return packages that are in the specified repository or its
// complements, recursively. While you could maybe come up with a
// (barely comprehensible) view/query to achieve this, doing it on
// the "client side" is definitely more straightforward.
//
vector<shared_ptr<available_package>>
filter (const shared_ptr<repository>&, odb::result<available_package>&&);
pair<shared_ptr<available_package>, shared_ptr<repository>>
filter_one (const shared_ptr<repository>&, odb::result<available_package>&&);
// package_state
//
enum class package_state
{
transient, // No longer or not yet in the database.
broken,
fetched,
unpacked,
configured
};
string
to_string (package_state);
package_state
to_package_state (const string&); // May throw invalid_argument.
inline ostream&
operator<< (ostream& os, package_state s) {return os << to_string (s);}
#pragma db map type(package_state) as(string) \
to(to_string (?)) \
from(bpkg::to_package_state (?))
// package_substate
//
enum class package_substate
{
none,
system // System package; valid states: configured.
};
string
to_string (package_substate);
package_substate
to_package_substate (const string&); // May throw invalid_argument.
inline ostream&
operator<< (ostream& os, package_substate s) {return os << to_string (s);}
#pragma db map type(package_substate) as(string) \
to(to_string (?)) \
from(bpkg::to_package_substate (?))
// package
//
#pragma db object pointer(shared_ptr) session
class selected_package
{
public:
using version_type = bpkg::version;
string name; // Object id.
version_type version;
package_state state;
package_substate substate;
// The hold flags indicate whether this package and/or version
// should be retained in the configuration. A held package will
// not be automatically removed. A held version will not be
// automatically upgraded. Note also that the two flags are
// orthogonal: we may want to keep a specific version of the
// package as long as it has dependents.
//
bool hold_package;
bool hold_version;
// Repository from which this package came. Note that it is not
// a pointer to the repository object because it could be wiped
// out (e.g., as a result of rep-fetch). We call such packages
// "orphans". While we can get a list of orphan's prerequisites
// (by loading its manifest), we wouldn't know which repository
// to use as a base to resolve them. As a result, an orphan that
// is not already configured (and thus has all its prerequisites
// resolved) is not very useful and can only be purged.
//
repository_location repository;
// Path to the archive of this package, if any. If not absolute,
// then it is relative to the configuration directory. The purge
// flag indicates whether the archive should be removed when the
// packaged is purged. If the archive is not present, it should
// be false.
//
optional<path> archive;
bool purge_archive;
// Path to the source directory of this package, if any. If not
// absolute, then it is relative to the configuration directory.
// The purge flag indicates whether the directory should be
// removed when the packaged is purged. If the source directory
// is not present, it should be false.
//
optional<dir_path> src_root;
bool purge_src;
// Path to the output directory of this package, if any. It is
// always relative to the configuration directory and currently
// is always <name>-<version>. It is only set once the package
// is configured and its main purse is to keep track of what
// needs to be cleaned by the user before a broken package can
// be purged. Note that it could be the same as out_root.
//
optional<dir_path> out_root;
// A map of "effective" prerequisites (i.e., pointers to other selected
// packages) to optional dependency constraint. Note that because it is a
// single constraint, we don't support multiple dependencies on the same
// package (e.g., two ranges of versions). See pkg_configure().
//
using prerequisites_type = std::map<lazy_shared_ptr<selected_package>,
optional<dependency_constraint>,
compare_lazy_ptr>;
prerequisites_type prerequisites;
bool
system () const
{
// The system substate is only valid for the configured state.
//
assert (substate != package_substate::system ||
state == package_state::configured);
return substate == package_substate::system;
}
// Represent the wildcard version with the "*" string. Represent naturally
// all other versions.
//
string
version_string () const;
// Database mapping.
//
#pragma db member(name) id
#pragma db member(prerequisites) id_column("package") \
key_column("prerequisite") value_column("") key_not_null
private:
friend class odb::access;
selected_package () = default;
};
// Print the package name, version and the 'sys:' prefix for the system
// substate. The wildcard version is represented with the "*" string.
//
ostream&
operator<< (ostream&, const selected_package&);
// certificate
//
// Information extracted from a repository X.509 certificate. The actual
// certificate is stored on disk as .bpkg/certs/<fingerprint>.pem (we have
// to store it as a file because that's the only way to pass it to openssl).
//
// If a repository is not authenticated (has no certificate/signature,
// called unauth from now on), then we ask for the user's confirmation and
// create a dummy certificate in order not to ask for the same confirmation
// (for this repository) on next fetch. The problem is, there could be
// multiple sections in such a repository and it would be annoying to
// confirm all of them. So what we are going to do is create a dummy
// certificate not for this specific repository location but for a
// repository location only up to the version, so the name member will
// contain the name prefix rather than the full name (just like a normal
// certificate would). The fingerprint member for such a dummy certificate
// contains the SHA256 checksum of this name. Members other then name and
// fingerprint are meaningless for the dummy certificate.
//
#pragma db object pointer(shared_ptr) session
class certificate
{
public:
string fingerprint; // Object id (note: SHA256 fingerprint).
string name; // CN component of Subject.
string organization; // O component of Subject.
string email; // email: in Subject Alternative Name.
timestamp start_date; // notBefore (UTC)
timestamp end_date; // notAfter (UTC)
bool
dummy () const {return start_date == timestamp_unknown;}
bool
expired () const
{
assert (!dummy ());
return timestamp::clock::now () > end_date;
}
public:
certificate (string f,
string n,
string o,
string e,
timestamp sd,
timestamp ed)
: fingerprint (move (f)),
name (move (n)),
organization (move (o)),
email (move (e)),
start_date (move (sd)),
end_date (move (ed))
{
}
// Create dummy certificate.
//
certificate (string f, string n)
: fingerprint (move (f)),
name (move (n)),
start_date (timestamp_unknown),
end_date (timestamp_unknown)
{
}
// Database mapping.
//
#pragma db member(fingerprint) id
private:
friend class odb::access;
certificate () = default;
};
// Note: prints all the certificate information on one line so mostly
// useful for tracing.
//
ostream&
operator<< (ostream&, const certificate&);
// Return a list of packages that depend on this package along with
// their constraints.
//
/*
#pragma db view object(selected_package) \
container(selected_package::prerequisites = pp inner: pp.key)
struct package_dependent
{
#pragma db column(pp.id)
string name;
#pragma db column(pp.value)
optional<dependency_constraint> constraint;
};
*/
// @@ Using raw container table since ODB doesn't support containers
// in views yet.
//
#pragma db view object(selected_package) \
table("selected_package_prerequisites" = "pp" inner: \
"pp.prerequisite = " + selected_package::name)
struct package_dependent
{
#pragma db column("pp.package")
string name;
#pragma db column("pp.")
optional<dependency_constraint> constraint;
};
// Version comparison operators.
//
// They allow comparing objects that have epoch, canonical_upstream,
// canonical_release, and revision data members. The idea is that this
// works for both query members of types version and canonical_version
// as well as for comparing canonical_version to version.
//
template <typename T1, typename T2>
inline auto
compare_version_eq (const T1& x, const T2& y, bool revision)
-> decltype (x.epoch == y.epoch)
{
// Since we don't quite know what T1 and T2 are (and where the resulting
// expression will run), let's not push our luck with something like
// (!revision || x.revision == y.revision).
//
auto r (x.epoch == y.epoch &&
x.canonical_upstream == y.canonical_upstream &&
x.canonical_release == y.canonical_release);
return revision
? r && x.revision == y.revision
: r;
}
/*
Currently unused (and probably should stay that way).
template <typename T1, typename T2>
inline auto
operator== (const T1& x, const T2& y) -> decltype (x.epoch == y.epoch)
{
return compare_version_eq (x, y, true);
}
*/
template <typename T1, typename T2>
inline auto
compare_version_ne (const T1& x, const T2& y, bool revision)
-> decltype (x.epoch == y.epoch)
{
auto r (x.epoch != y.epoch ||
x.canonical_upstream != y.canonical_upstream ||
x.canonical_release != y.canonical_release);
return revision
? r || x.revision != y.revision
: r;
}
template <typename T1, typename T2>
inline auto
operator!= (const T1& x, const T2& y) -> decltype (x.epoch != y.epoch)
{
return compare_version_ne (x, y, true);
}
template <typename T1, typename T2>
inline auto
compare_version_lt (const T1& x, const T2& y, bool revision)
-> decltype (x.epoch == y.epoch)
{
auto r (
x.epoch < y.epoch ||
(x.epoch == y.epoch && x.canonical_upstream < y.canonical_upstream) ||
(x.epoch == y.epoch && x.canonical_upstream == y.canonical_upstream &&
x.canonical_release < y.canonical_release));
return revision
? r ||
(x.epoch == y.epoch && x.canonical_upstream == y.canonical_upstream &&
x.canonical_release == y.canonical_release && x.revision < y.revision)
: r;
}
template <typename T1, typename T2>
inline auto
operator< (const T1& x, const T2& y) -> decltype (x.epoch < y.epoch)
{
return compare_version_lt (x, y, true);
}
template <typename T1, typename T2>
inline auto
compare_version_le (const T1& x, const T2& y, bool revision)
-> decltype (x.epoch == y.epoch)
{
auto r (
x.epoch < y.epoch ||
(x.epoch == y.epoch && x.canonical_upstream < y.canonical_upstream));
return revision
? r ||
(x.epoch == y.epoch && x.canonical_upstream == y.canonical_upstream &&
x.canonical_release < y.canonical_release) ||
(x.epoch == y.epoch && x.canonical_upstream == y.canonical_upstream &&
x.canonical_release == y.canonical_release && x.revision <= y.revision)
: r ||
(x.epoch == y.epoch && x.canonical_upstream == y.canonical_upstream &&
x.canonical_release <= y.canonical_release);
}
/*
Currently unused (and probably should stay that way).
template <typename T1, typename T2>
inline auto
operator<= (const T1& x, const T2& y) -> decltype (x.epoch <= y.epoch)
{
return compare_version_le (x, y, true);
}
*/
template <typename T1, typename T2>
inline auto
compare_version_gt (const T1& x, const T2& y, bool revision)
-> decltype (x.epoch == y.epoch)
{
auto r (
x.epoch > y.epoch ||
(x.epoch == y.epoch && x.canonical_upstream > y.canonical_upstream) ||
(x.epoch == y.epoch && x.canonical_upstream == y.canonical_upstream &&
x.canonical_release > y.canonical_release));
return revision
? r ||
(x.epoch == y.epoch && x.canonical_upstream == y.canonical_upstream &&
x.canonical_release == y.canonical_release && x.revision > y.revision)
: r;
}
template <typename T1, typename T2>
inline auto
operator> (const T1& x, const T2& y) -> decltype (x.epoch > y.epoch)
{
return compare_version_gt (x, y, true);
}
template <typename T1, typename T2>
inline auto
compare_version_ge (const T1& x, const T2& y, bool revision)
-> decltype (x.epoch == y.epoch)
{
auto r (
x.epoch > y.epoch ||
(x.epoch == y.epoch && x.canonical_upstream > y.canonical_upstream));
return revision
? r ||
(x.epoch == y.epoch && x.canonical_upstream == y.canonical_upstream &&
x.canonical_release > y.canonical_release) ||
(x.epoch == y.epoch && x.canonical_upstream == y.canonical_upstream &&
x.canonical_release == y.canonical_release && x.revision >= y.revision)
: r ||
(x.epoch == y.epoch && x.canonical_upstream == y.canonical_upstream &&
x.canonical_release >= y.canonical_release);
}
template <typename T1, typename T2>
inline auto
operator>= (const T1& x, const T2& y) -> decltype (x.epoch >= y.epoch)
{
return compare_version_ge (x, y, true);
}
template <typename T>
inline auto
order_by_version_desc (const T& x) -> //decltype ("ORDER BY" + x.epoch)
decltype (x.epoch == 0)
{
return "ORDER BY"
+ x.epoch + "DESC,"
+ x.canonical_upstream + "DESC,"
+ x.canonical_release + "DESC,"
+ x.revision + "DESC";
}
template <typename T>
inline auto
order_by_revision_desc (const T& x) -> //decltype ("ORDER BY" + x.epoch)
decltype (x.revision == 0)
{
return "ORDER BY" + x.revision + "DESC";
}
}
#include <bpkg/package.ixx>
#endif // BPKG_PACKAGE
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