Error ModuleCache::Get(const FileSpec &root_dir_spec, const char *hostname,
const ModuleSpec &module_spec,
ModuleSP &cached_module_sp, bool *did_create_ptr) {
const auto find_it =
m_loaded_modules.find(module_spec.GetUUID().GetAsString());
if (find_it != m_loaded_modules.end()) {
cached_module_sp = (*find_it).second.lock();
if (cached_module_sp)
return Error();
m_loaded_modules.erase(find_it);
}
const auto module_spec_dir =
GetModuleDirectory(root_dir_spec, module_spec.GetUUID());
const auto module_file_path = JoinPath(
module_spec_dir, module_spec.GetFileSpec().GetFilename().AsCString());
if (!module_file_path.Exists())
return Error("Module %s not found", module_file_path.GetPath().c_str());
if (module_file_path.GetByteSize() != module_spec.GetObjectSize())
return Error("Module %s has invalid file size",
module_file_path.GetPath().c_str());
// We may have already cached module but downloaded from an another host - in
// this case let's create a link to it.
auto error = CreateHostSysRootModuleLink(root_dir_spec, hostname,
module_spec.GetFileSpec(),
module_file_path, false);
if (error.Fail())
return Error("Failed to create link to %s: %s",
module_file_path.GetPath().c_str(), error.AsCString());
auto cached_module_spec(module_spec);
cached_module_spec.GetUUID().Clear(); // Clear UUID since it may contain md5
// content hash instead of real UUID.
cached_module_spec.GetFileSpec() = module_file_path;
cached_module_spec.GetPlatformFileSpec() = module_spec.GetFileSpec();
error = ModuleList::GetSharedModule(cached_module_spec, cached_module_sp,
nullptr, nullptr, did_create_ptr, false);
if (error.Fail())
return error;
FileSpec symfile_spec = GetSymbolFileSpec(cached_module_sp->GetFileSpec());
if (symfile_spec.Exists())
cached_module_sp->SetSymbolFileFileSpec(symfile_spec);
m_loaded_modules.insert(
std::make_pair(module_spec.GetUUID().GetAsString(), cached_module_sp));
return Error();
}
