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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
commit | 19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch) | |
tree | 42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/osd/ClassHandler.h | |
parent | Initial commit. (diff) | |
download | ceph-upstream.tar.xz ceph-upstream.zip |
Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/osd/ClassHandler.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/src/osd/ClassHandler.h b/src/osd/ClassHandler.h new file mode 100644 index 000000000..fff61d5d2 --- /dev/null +++ b/src/osd/ClassHandler.h @@ -0,0 +1,126 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +#ifndef CEPH_CLASSHANDLER_H +#define CEPH_CLASSHANDLER_H + +#include <variant> + +#include "include/types.h" +#include "include/common_fwd.h" +#include "common/ceph_mutex.h" +#include "objclass/objclass.h" + +//forward declaration +class ClassHandler +{ +public: + CephContext *cct; + struct ClassData; + + struct ClassMethod { + const std::string name; + using func_t = std::variant<cls_method_cxx_call_t, cls_method_call_t>; + func_t func; + int flags = 0; + ClassData *cls = nullptr; + + int exec(cls_method_context_t ctx, + ceph::bufferlist& indata, + ceph::bufferlist& outdata); + void unregister(); + + int get_flags() { + std::lock_guard l(cls->handler->mutex); + return flags; + } + ClassMethod(const char* name, func_t call, int flags, ClassData* cls) + : name{name}, func{call}, flags{flags}, cls{cls} + {} + }; + + struct ClassFilter { + ClassData *cls = nullptr; + std::string name; + cls_cxx_filter_factory_t fn = nullptr; + + void unregister(); + }; + + struct ClassData { + enum Status { + CLASS_UNKNOWN, + CLASS_MISSING, // missing + CLASS_MISSING_DEPS, // missing dependencies + CLASS_INITIALIZING, // calling init() right now + CLASS_OPEN, // initialized, usable + } status = CLASS_UNKNOWN; + + std::string name; + ClassHandler *handler = nullptr; + void *handle = nullptr; + + bool allowed = false; + + std::map<std::string, ClassMethod> methods_map; + std::map<std::string, ClassFilter> filters_map; + + std::set<ClassData *> dependencies; /* our dependencies */ + std::set<ClassData *> missing_dependencies; /* only missing dependencies */ + + ClassMethod *_get_method(const std::string& mname); + + ClassMethod *register_method(const char *mname, + int flags, + cls_method_call_t func); + ClassMethod *register_cxx_method(const char *mname, + int flags, + cls_method_cxx_call_t func); + void unregister_method(ClassMethod *method); + + ClassFilter *register_cxx_filter(const std::string &filter_name, + cls_cxx_filter_factory_t fn); + void unregister_filter(ClassFilter *method); + + ClassMethod *get_method(const std::string& mname) { + std::lock_guard l(handler->mutex); + return _get_method(mname); + } + int get_method_flags(const std::string& mname); + + ClassFilter *get_filter(const std::string &filter_name) { + std::lock_guard l(handler->mutex); + if (auto i = filters_map.find(filter_name); i == filters_map.end()) { + return nullptr; + } else { + return &(i->second); + } + } + }; + +private: + std::map<std::string, ClassData> classes; + + ClassData *_get_class(const std::string& cname, bool check_allowed); + int _load_class(ClassData *cls); + + static bool in_class_list(const std::string& cname, + const std::string& list); + + ceph::mutex mutex = ceph::make_mutex("ClassHandler"); + +public: + explicit ClassHandler(CephContext *cct) : cct(cct) {} + + int open_all_classes(); + int open_class(const std::string& cname, ClassData **pcls); + + ClassData *register_class(const char *cname); + void unregister_class(ClassData *cls); + + void shutdown(); + + static ClassHandler& get_instance(); +}; + + +#endif |