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depot_query: support to query <dependencies>
The '<dependencies>' attribute 'path' refers to a depot archive. Depending on the attributes 'source="no"' and 'binary="no" (defaults shown), the depot_query component determines the source/binary dependencies of the given archive. The result has the form of a report with a sequence of <missing> and <present> nodes, each equipped with the 'path' of the dependency.
This commit is contained in:
Norman Feske
Christian Helmuth
parent
b0abfc2dcd
commit
9a671cf8bc
@ -20,11 +20,48 @@
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namespace Depot_query {
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using namespace Genode;
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struct Recursion_limit;
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struct Archive;
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struct Dependencies;
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struct Main;
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}
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class Depot_query::Recursion_limit : Noncopyable
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{
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public:
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class Reached : Exception { };
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private:
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unsigned const _value;
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static unsigned _checked_decr(unsigned value)
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{
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if (value == 0)
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throw Reached();
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return value - 1;
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}
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public:
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/**
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* Constructor
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*/
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explicit Recursion_limit(unsigned value) : _value(value) { }
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/**
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* Copy constructor
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*
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* \throw Recursion_limit::Reached
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*/
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Recursion_limit(Recursion_limit const &other)
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: _value(_checked_decr(other._value)) { }
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};
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struct Depot_query::Archive
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{
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typedef String<100> Path;
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@ -95,6 +132,88 @@ struct Depot_query::Archive
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};
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/**
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* Collection of dependencies
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*
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* This data structure keeps track of a list of archive paths along with the
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* information of whether or not the archive is present in the depot. It also
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* ensures that all entries are unique.
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*/
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class Depot_query::Dependencies
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{
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private:
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struct Collection : Noncopyable
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{
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Allocator &_alloc;
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typedef Registered_no_delete<Archive::Path> Entry;
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Registry<Entry> _entries;
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Collection(Allocator &alloc) : _alloc(alloc) { }
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~Collection()
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{
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_entries.for_each([&] (Entry &e) { destroy(_alloc, &e); });
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}
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bool known(Archive::Path const &path) const
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{
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bool result = false;
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_entries.for_each([&] (Entry const &entry) {
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if (path == entry)
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result = true; });
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return result;
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}
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void insert(Archive::Path const &path)
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{
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if (!known(path))
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new (_alloc) Entry(_entries, path);
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}
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template <typename FN>
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void for_each(FN const &fn) const { _entries.for_each(fn); };
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};
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Directory const &_depot;
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Collection _present;
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Collection _missing;
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public:
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Dependencies(Allocator &alloc, Directory const &depot)
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:
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_depot(depot), _present(alloc), _missing(alloc)
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{ }
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bool known(Archive::Path const &path) const
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{
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return _present.known(path) || _missing.known(path);
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}
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void record(Archive::Path const &path)
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{
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if (_depot.directory_exists(path))
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_present.insert(path);
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else
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_missing.insert(path);
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}
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void xml(Xml_generator &xml) const
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{
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_present.for_each([&] (Archive::Path const &path) {
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xml.node("present", [&] () { xml.attribute("path", path); }); });
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_missing.for_each([&] (Archive::Path const &path) {
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xml.node("missing", [&] () { xml.attribute("path", path); }); });
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}
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};
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struct Depot_query::Main
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{
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Env &_env;
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@ -105,25 +224,38 @@ struct Depot_query::Main
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Root_directory _root { _env, _heap, _config.xml().sub_node("vfs") };
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Directory _depot_dir { _root, "depot" };
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Signal_handler<Main> _config_handler {
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_env.ep(), *this, &Main::_handle_config };
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Reporter _directory_reporter { _env, "directory" };
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Reporter _blueprint_reporter { _env, "blueprint" };
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Reporter _user_reporter { _env, "user" };
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Reporter _directory_reporter { _env, "directory" };
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Reporter _blueprint_reporter { _env, "blueprint" };
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Reporter _dependencies_reporter { _env, "dependencies" };
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Reporter _user_reporter { _env, "user" };
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typedef String<64> Rom_label;
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typedef String<16> Architecture;
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Architecture _architecture;
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/**
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* Look up ROM module 'rom_label' in the archives referenced by 'pkg_path'
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*
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* \throw Directory::Nonexistent_directory
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* \throw Directory::Nonexistent_file
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* \throw File::Truncated_during_read
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* \throw Recursion_limit::Reached
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*/
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Archive::Path _find_rom_in_pkg(Directory::Path const &pkg_path,
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Rom_label const &rom_label,
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unsigned const nesting_level);
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Recursion_limit recursion_limit);
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void _scan_depot_user_pkg(Archive::User const &user, Directory &dir, Xml_generator &xml);
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void _query_blueprint(Directory::Path const &path, Xml_generator &xml);
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void _query_user(Archive::User const &user, Xml_generator &xml);
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void _scan_depot_user_pkg(Archive::User const &, Directory const &, Xml_generator &);
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void _query_blueprint(Directory::Path const &, Xml_generator &);
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void _collect_source_dependencies(Archive::Path const &, Dependencies &, Recursion_limit);
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void _collect_binary_dependencies(Archive::Path const &, Dependencies &, Recursion_limit);
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void _query_user(Archive::User const &, Xml_generator &);
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void _handle_config()
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{
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@ -131,9 +263,10 @@ struct Depot_query::Main
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Xml_node config = _config.xml();
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_directory_reporter.enabled(config.has_sub_node("scan"));
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_blueprint_reporter.enabled(config.has_sub_node("blueprint"));
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_user_reporter .enabled(config.has_sub_node("user"));
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_directory_reporter .enabled(config.has_sub_node("scan"));
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_blueprint_reporter .enabled(config.has_sub_node("blueprint"));
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_dependencies_reporter.enabled(config.has_sub_node("dependencies"));
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_user_reporter .enabled(config.has_sub_node("user"));
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_root.apply_config(config.sub_node("vfs"));
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@ -156,7 +289,31 @@ struct Depot_query::Main
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if (_blueprint_reporter.enabled()) {
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Reporter::Xml_generator xml(_blueprint_reporter, [&] () {
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config.for_each_sub_node("blueprint", [&] (Xml_node node) {
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_query_blueprint(node.attribute_value("pkg", Directory::Path()), xml); });
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Archive::Path pkg = node.attribute_value("pkg", Archive::Path());
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try { _query_blueprint(pkg, xml); }
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catch (...) {
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warning("could not obtain blueprint for '", pkg, "'");
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}
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});
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});
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}
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if (_dependencies_reporter.enabled()) {
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Reporter::Xml_generator xml(_dependencies_reporter, [&] () {
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Dependencies dependencies(_heap, _depot_dir);
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config.for_each_sub_node("dependencies", [&] (Xml_node node) {
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Archive::Path const path = node.attribute_value("path", Archive::Path());
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if (node.attribute_value("source", false))
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_collect_source_dependencies(path, dependencies, Recursion_limit{8});
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if (node.attribute_value("binary", false))
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_collect_binary_dependencies(path, dependencies, Recursion_limit{8});
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});
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dependencies.xml(xml);
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});
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}
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@ -173,9 +330,9 @@ struct Depot_query::Main
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void Depot_query::Main::_scan_depot_user_pkg(Archive::User const &user,
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Directory &dir, Xml_generator &xml)
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Directory const &dir, Xml_generator &xml)
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{
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dir.for_each_entry([&] (Directory::Entry &entry) {
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dir.for_each_entry([&] (Directory::Entry const &entry) {
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if (!dir.file_exists(Directory::Path(entry.name(), "/runtime")))
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return;
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@ -190,18 +347,12 @@ void Depot_query::Main::_scan_depot_user_pkg(Archive::User const &user,
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Depot_query::Archive::Path
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Depot_query::Main::_find_rom_in_pkg(Directory::Path const &pkg_path,
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Rom_label const &rom_label,
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unsigned const nesting_level)
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Recursion_limit recursion_limit)
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{
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if (nesting_level == 0) {
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error("too deeply nested pkg archives");
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return Archive::Path();
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}
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/*
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* \throw Directory::Nonexistent_directory
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*/
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Directory depot_dir(_root, Directory::Path("depot"));
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Directory pkg_dir(depot_dir, pkg_path);
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Directory pkg_dir(_depot_dir, pkg_path);
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/*
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* \throw Directory::Nonexistent_file
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@ -213,6 +364,9 @@ Depot_query::Main::_find_rom_in_pkg(Directory::Path const &pkg_path,
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archives.for_each_line<Archive::Path>([&] (Archive::Path const &archive_path) {
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if (result.valid())
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return;
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/*
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* \throw Archive::Unknown_archive_type
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*/
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@ -225,7 +379,7 @@ Depot_query::Main::_find_rom_in_pkg(Directory::Path const &pkg_path,
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Archive::name(archive_path), "/",
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Archive::version(archive_path), "/", rom_label);
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if (depot_dir.file_exists(rom_path))
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if (_depot_dir.file_exists(rom_path))
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result = rom_path;
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}
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break;
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@ -235,8 +389,7 @@ Depot_query::Main::_find_rom_in_pkg(Directory::Path const &pkg_path,
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break;
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case Archive::PKG:
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// XXX call recursively, adjust 'nesting_level'
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log(" ", archive_path, " (pkg archive)");
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result = _find_rom_in_pkg(pkg_path, rom_label, recursion_limit);
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break;
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}
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});
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@ -282,9 +435,8 @@ void Depot_query::Main::_query_blueprint(Directory::Path const &pkg_path, Xml_ge
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return;
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}
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unsigned const max_nesting_levels = 8;
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Archive::Path const rom_path =
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_find_rom_in_pkg(pkg_path, label, max_nesting_levels);
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_find_rom_in_pkg(pkg_path, label, Recursion_limit{8});
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if (rom_path.valid()) {
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xml.node("rom", [&] () {
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@ -308,6 +460,89 @@ void Depot_query::Main::_query_blueprint(Directory::Path const &pkg_path, Xml_ge
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}
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void Depot_query::Main::_collect_source_dependencies(Archive::Path const &path,
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Dependencies &dependencies,
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Recursion_limit recursion_limit)
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{
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try { Archive::type(path); }
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catch (Archive::Unknown_archive_type) {
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warning("archive '", path, "' has unexpected type");
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return;
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}
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dependencies.record(path);
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switch (Archive::type(path)) {
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case Archive::PKG:
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try {
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File_content archives(_heap, Directory(_depot_dir, path),
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"archives", File_content::Limit{16*1024});
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archives.for_each_line<Archive::Path>([&] (Archive::Path const &path) {
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_collect_source_dependencies(path, dependencies, recursion_limit); });
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}
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catch (File_content::Nonexistent_file) { }
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break;
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case Archive::SRC:
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try {
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File_content used_apis(_heap, Directory(_depot_dir, path),
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"used_apis", File_content::Limit{16*1024});
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typedef String<160> Api;
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used_apis.for_each_line<Archive::Path>([&] (Api const &api) {
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dependencies.record(Archive::Path(Archive::user(path), "/api/", api));
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});
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}
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catch (File_content::Nonexistent_file) { }
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break;
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case Archive::RAW:
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break;
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};
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}
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void Depot_query::Main::_collect_binary_dependencies(Archive::Path const &path,
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Dependencies &dependencies,
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Recursion_limit recursion_limit)
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{
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try { Archive::type(path); }
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catch (Archive::Unknown_archive_type) {
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warning("archive '", path, "' has unexpected type");
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return;
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}
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switch (Archive::type(path)) {
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case Archive::PKG:
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try {
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dependencies.record(path);
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File_content archives(_heap, Directory(_depot_dir, path),
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"archives", File_content::Limit{16*1024});
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archives.for_each_line<Archive::Path>([&] (Archive::Path const &archive_path) {
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_collect_binary_dependencies(archive_path, dependencies, recursion_limit); });
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} catch (File_content::Nonexistent_file) { }
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break;
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case Archive::SRC:
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dependencies.record(Archive::Path(Archive::user(path), "/bin/",
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_architecture, "/",
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Archive::name(path), "/",
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Archive::version(path)));
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break;
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case Archive::RAW:
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dependencies.record(path);
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break;
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};
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}
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void Depot_query::Main::_query_user(Archive::User const &user, Xml_generator &xml)
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{
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Directory user_dir(_root, Directory::Path("depot/", user));
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@ -317,7 +552,6 @@ void Depot_query::Main::_query_user(Archive::User const &user, Xml_generator &xm
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File_content download(_heap, user_dir, "download", File_content::Limit{4*1024});
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typedef String<256> Url;
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download.for_each_line<Url>([&] (Url const &url) {
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log("user url: ", url);
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xml.node("url", [&] () { xml.append_sanitized(url.string()); }); });
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File_content pubkey(_heap, user_dir, "pubkey", File_content::Limit{8*1024});
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