Try<Nothing> ModuleManager::load(const Modules& modules)
{
Lock lock(&mutex);
initialize();
foreach (const Modules::Library& library, modules.libraries()) {
string libraryName;
if (library.has_file()) {
libraryName = library.file();
} else if (library.has_name()) {
libraryName = os::libraries::expandName(library.name());
} else {
return Error("Library name or path not provided");
}
if (!dynamicLibraries.contains(libraryName)) {
Owned<DynamicLibrary> dynamicLibrary(new DynamicLibrary());
Try<Nothing> result = dynamicLibrary->open(libraryName);
if (!result.isSome()) {
return Error("Error opening library: '" + libraryName + "'");
}
dynamicLibraries[libraryName] = dynamicLibrary;
}
// Load module manifests.
foreach (const string& moduleName, library.modules()) {
if (moduleName.empty()) {
return Error(
"Error: module name not provided with library '" +
library.file() + "'");
}
// Check for possible duplicate module names.
if (moduleBases.contains(moduleName)) {
return Error("Error loading duplicate module '" + moduleName + "'");
}
Try<void*> symbol = dynamicLibraries[libraryName]->loadSymbol(moduleName);
if (symbol.isError()) {
return Error(
"Error loading module '" + moduleName + "': " + symbol.error());
}
ModuleBase* moduleBase = (ModuleBase*) symbol.get();
Try<Nothing> result = verifyModule(moduleName, moduleBase);
if (result.isError()) {
return Error(
"Error verifying module '" + moduleName + "': " + result.error());
}
moduleBases[moduleName] = (ModuleBase*) symbol.get();
}
}
return Nothing();
}
Try<Nothing> ModuleManager::load(const Modules& modules)
{
Lock lock(&mutex);
initialize();
foreach (const Modules::Library& library, modules.libraries()) {
string libraryName;
if (library.has_file()) {
libraryName = library.file();
} else if (library.has_name()) {
libraryName = os::libraries::expandName(library.name());
} else {
return Error("Library name or path not provided");
}
if (!dynamicLibraries.contains(libraryName)) {
Owned<DynamicLibrary> dynamicLibrary(new DynamicLibrary());
Try<Nothing> result = dynamicLibrary->open(libraryName);
if (!result.isSome()) {
return Error(
"Error opening library: '" + libraryName + "': " + result.error());
}
dynamicLibraries[libraryName] = dynamicLibrary;
}
// Load module manifests.
foreach (const Modules::Library::Module& module, library.modules()) {
if (!module.has_name()) {
return Error(
"Error: module name not provided with library '" + libraryName +
"'");
}
// Check for possible duplicate module names.
const std::string moduleName = module.name();
if (moduleBases.contains(moduleName)) {
return Error("Error loading duplicate module '" + moduleName + "'");
}
// Load ModuleBase.
Try<void*> symbol = dynamicLibraries[libraryName]->loadSymbol(moduleName);
if (symbol.isError()) {
return Error(
"Error loading module '" + moduleName + "': " + symbol.error());
}
ModuleBase* moduleBase = (ModuleBase*) symbol.get();
// Verify module compatibility including version, etc.
Try<Nothing> result = verifyModule(moduleName, moduleBase);
if (result.isError()) {
return Error(
"Error verifying module '" + moduleName + "': " + result.error());
}
moduleBases[moduleName] = (ModuleBase*) symbol.get();
// Now copy the supplied module-specific parameters.
moduleParameters[moduleName].mutable_parameter()->CopyFrom(
module.parameters());
}
}
return Nothing();
}
