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// Copyright Epic Games, Inc. All Rights Reserved.
#include <zenovermind/overmindclient.h>
#include <zencore/fmtutils.h>
#include <zencore/iobuffer.h>
#include <zencore/logging.h>
#include <zencore/memoryview.h>
#include <zencore/trace.h>
#include <zenhttp/httpclient.h>
ZEN_THIRD_PARTY_INCLUDES_START
#include <json11.hpp>
ZEN_THIRD_PARTY_INCLUDES_END
namespace zen::overmind {
namespace {
HttpClient::KeyValueMap MakeOvermindHeaders(const OvermindConfig& Config)
{
HttpClient::KeyValueMap Headers;
if (!Config.AuthToken.empty())
{
Headers->emplace("Authorization", "Bearer " + Config.AuthToken);
}
return Headers;
}
} // namespace
OvermindClient::OvermindClient(const OvermindConfig& Config) : m_Config(Config), m_Log(zen::logging::Get("overmind.client"))
{
}
OvermindClient::~OvermindClient() = default;
bool
OvermindClient::Initialize()
{
ZEN_TRACE_CPU("OvermindClient::Initialize");
HttpClientSettings Settings;
Settings.LogCategory = "overmind.http";
Settings.ConnectTimeout = std::chrono::milliseconds{10000};
Settings.Timeout = std::chrono::milliseconds{60000};
Settings.RetryCount = 1;
// Ensure the base URL ends with a slash so path concatenation works correctly
std::string BaseUrl = m_Config.ServerUrl;
if (!BaseUrl.empty() && BaseUrl.back() != '/')
{
BaseUrl += '/';
}
m_Http = std::make_unique<zen::HttpClient>(BaseUrl, Settings);
return true;
}
std::string
OvermindClient::BuildJobJson(const std::string& JobName,
const std::string& OrchestratorEndpoint,
const std::string& CoordinatorSession,
bool CleanStart,
const std::string& TraceHost) const
{
ZEN_TRACE_CPU("OvermindClient::BuildJobJson");
// Build the args array for the zenserver compute command
json11::Json::array Args;
Args.push_back("compute");
Args.push_back("--http=asio");
if (!OrchestratorEndpoint.empty())
{
ExtendableStringBuilder<256> CoordArg;
CoordArg << "--coordinator-endpoint=" << OrchestratorEndpoint;
Args.push_back(std::string(CoordArg.ToView()));
}
{
ExtendableStringBuilder<128> IdArg;
IdArg << "--instance-id=overmind-" << JobName;
Args.push_back(std::string(IdArg.ToView()));
}
if (!CoordinatorSession.empty())
{
ExtendableStringBuilder<128> SessionArg;
SessionArg << "--coordinator-session=" << CoordinatorSession;
Args.push_back(std::string(SessionArg.ToView()));
}
if (CleanStart)
{
Args.push_back("--clean");
}
if (!TraceHost.empty())
{
ExtendableStringBuilder<128> TraceArg;
TraceArg << "--tracehost=" << TraceHost;
Args.push_back(std::string(TraceArg.ToView()));
}
json11::Json Task = json11::Json::object{
{"name", "zenserver"},
{"type", "TASK_TYPE_MAIN"},
{"command", m_Config.CommandRef},
{"args", Args},
{"resources",
json11::Json::object{
{"memory", m_Config.Memory},
{"cpu", m_Config.Cpu},
}},
};
json11::Json Body = json11::Json::object{
{"namespace", m_Config.Namespace},
{"region", m_Config.Region},
{"definition",
json11::Json::object{
{"name", JobName},
{"os", m_Config.Os},
{"arch", m_Config.Arch},
{"tasks", json11::Json::array{Task}},
}},
};
return Body.dump();
}
bool
OvermindClient::ScheduleJob(const std::string& JobJson, OvermindJobInfo& OutJob)
{
ZEN_TRACE_CPU("OvermindClient::ScheduleJob");
const IoBuffer Payload = IoBufferBuilder::MakeFromMemory(MemoryView{JobJson.data(), JobJson.size()}, ZenContentType::kJSON);
const HttpClient::Response Response = m_Http->Post("v1/jobs", Payload, MakeOvermindHeaders(m_Config));
if (Response.Error)
{
ZEN_WARN("Overmind job schedule failed: {}", Response.Error->ErrorMessage);
return false;
}
if (!Response.IsSuccess())
{
ZEN_WARN("Overmind job schedule failed with HTTP/{}", static_cast<int>(Response.StatusCode));
return false;
}
const std::string Body(Response.AsText());
std::string Err;
const json11::Json Json = json11::Json::parse(Body, Err);
if (!Err.empty())
{
ZEN_WARN("invalid JSON response from Overmind job schedule: {}", Err);
return false;
}
const auto& Job = Json["job"];
OutJob.Id = Job["id"].string_value();
OutJob.Status = Job["status"].string_value();
if (OutJob.Id.empty())
{
ZEN_WARN("Overmind job schedule response missing job ID");
return false;
}
ZEN_INFO("Overmind job scheduled: id={}", OutJob.Id);
return true;
}
bool
OvermindClient::GetJobStatus(const std::string& JobId, OvermindJobInfo& OutJob)
{
ZEN_TRACE_CPU("OvermindClient::GetJobStatus");
ExtendableStringBuilder<128> Path;
Path << "v1/jobs/" << JobId;
const HttpClient::Response Response = m_Http->Get(Path.ToView(), MakeOvermindHeaders(m_Config));
if (Response.Error)
{
ZEN_WARN("Overmind job status query failed for '{}': {}", JobId, Response.Error->ErrorMessage);
return false;
}
const int StatusCode = static_cast<int>(Response.StatusCode);
if (StatusCode == 404)
{
ZEN_INFO("Overmind job '{}' not found", JobId);
OutJob.Status = "STATUS_ERROR";
return true;
}
if (!Response.IsSuccess())
{
ZEN_WARN("Overmind job status query failed with HTTP/{}", StatusCode);
return false;
}
const std::string Body(Response.AsText());
std::string Err;
const json11::Json Json = json11::Json::parse(Body, Err);
if (!Err.empty())
{
ZEN_WARN("invalid JSON in Overmind job status response: {}", Err);
return false;
}
const auto& Job = Json["job"];
OutJob.Id = Job["id"].string_value();
OutJob.Status = Job["status"].string_value();
return true;
}
bool
OvermindClient::CancelJob(const std::string& JobId)
{
ZEN_TRACE_CPU("OvermindClient::CancelJob");
ExtendableStringBuilder<256> Path;
Path << "v1/jobs/" << JobId << "?namespace=" << m_Config.Namespace;
const HttpClient::Response Response = m_Http->Delete(Path.ToView(), MakeOvermindHeaders(m_Config));
if (Response.Error)
{
ZEN_WARN("Overmind job cancel failed for '{}': {}", JobId, Response.Error->ErrorMessage);
return false;
}
if (!Response.IsSuccess())
{
ZEN_WARN("Overmind job cancel failed with HTTP/{}", static_cast<int>(Response.StatusCode));
return false;
}
ZEN_INFO("Overmind job '{}' cancelled", JobId);
return true;
}
} // namespace zen::overmind
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