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ApiListener::UpdateObjectAuthority(): distribute auth. by object's host

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Pin child objects of hosts (HOST!...) to the same endpoint as the host.
This reduces cross-object action latency withing the same host.
If all endpoints know this algorithm, we can use it.
This commit is contained in:
Alexander A. Klimov 2025-05-16 15:02:56 +02:00
parent 18f810a1ea
commit 6cd83ba2b8
3 changed files with 26 additions and 4 deletions
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25
lib/remote/apilistener-authority.cpp
View File

@ -25,6 +25,7 @@ void ApiListener::UpdateObjectAuthority()
std::vector<Endpoint::Ptr> endpoints;
Endpoint::Ptr my_endpoint;
int hostChildrenInheritObjectAuthority = 0;
if (my_zone) {
my_endpoint = Endpoint::GetLocalEndpoint();
@ -38,6 +39,10 @@ void ApiListener::UpdateObjectAuthority()
continue;
endpoints.push_back(endpoint);
if (endpoint == my_endpoint || endpoint->GetCapabilities() & static_cast<uint_fast64_t>(ApiCapabilities::HostChildrenInheritObjectAuthority)) {
++hostChildrenInheritObjectAuthority;
}
}
double startTime = Application::GetStartTime();
@ -65,10 +70,24 @@ void ApiListener::UpdateObjectAuthority()
bool authority;
if (!my_zone)
if (my_zone) {
auto name (object->GetName());
// If all endpoints know this algorithm, we can use it.
if (hostChildrenInheritObjectAuthority == endpoints.size()) {
auto exclamation (name.FindFirstOf('!'));
// Pin child objects of hosts (HOST!...) to the same endpoint as the host.
// This reduces cross-object action latency withing the same host.
if (exclamation != String::NPos) {
name.erase(name.Begin() + exclamation, name.End());
}
}
authority = endpoints[Utility::SDBM(name) % endpoints.size()] == my_endpoint;
} else {
authority = true;
else
authority = endpoints[Utility::SDBM(object->GetName()) % endpoints.size()] == my_endpoint;
}
#ifdef I2_DEBUG
// //Enable on demand, causes heavy logging on each run.

4
lib/remote/apilistener.cpp
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@ -640,7 +640,9 @@ static const auto l_AppVersionInt (([]() -> unsigned long {
})());
static const auto l_MyCapabilities (
(uint_fast64_t)ApiCapabilities::ExecuteArbitraryCommand | (uint_fast64_t)ApiCapabilities::IfwApiCheckCommand
(uint_fast64_t)ApiCapabilities::ExecuteArbitraryCommand
| (uint_fast64_t)ApiCapabilities::IfwApiCheckCommand
| (uint_fast64_t)ApiCapabilities::HostChildrenInheritObjectAuthority
);
/**

1
lib/remote/apilistener.hpp
View File

@ -69,6 +69,7 @@ enum class ApiCapabilities : uint_fast64_t
{
ExecuteArbitraryCommand = 1u << 0u,
IfwApiCheckCommand = 1u << 1u,
HostChildrenInheritObjectAuthority = 1u << 2u,
};
/**