add trace command to enable/disable tracing at runtime (#416)

* add trace command to enable/disable tracing at runtime
* rework tracing init/start/stop
* changelog

1 files changed, 67 insertions, 0 deletions

diff --git a/src/zenserver/admin/admin.cpp b/src/zenserver/admin/admin.cpp
index cef2ba403..05ae0a24a 100644
--- a/src/zenserver/admin/admin.cpp
+++ b/src/zenserver/admin/admin.cpp
@@ -5,6 +5,10 @@
 #include <zencore/compactbinarybuilder.h>
 #include <zencore/jobqueue.h>
 #include <zencore/string.h>
+#if ZEN_WITH_TRACE
+#	include <zencore/trace.h>
+#endif	// ZEN_WITH_TRACE
+
 #include <zenstore/gc.h>
 
 #include <chrono>
@@ -248,6 +252,69 @@ HttpAdminService::HttpAdminService(GcScheduler& Scheduler, JobQueue& BackgroundJ
 			Req.ServerRequest().WriteResponse(HttpResponseCode::OK, Obj.Save());
 		},
 		HttpVerb::kPost);
+#if ZEN_WITH_TRACE
+	m_Router.RegisterRoute(
+		"trace",
+		[this](HttpRouterRequest& Req) {
+			bool Enabled = IsTracing();
+			return Req.ServerRequest().WriteResponse(HttpResponseCode::OK, HttpContentType::kText, Enabled ? "enabled" : "disabled");
+		},
+		HttpVerb::kGet);
+
+	m_Router.RegisterRoute(
+		"trace/start",
+		[this](HttpRouterRequest& Req) {
+			HttpServerRequest&					 HttpReq = Req.ServerRequest();
+			const HttpServerRequest::QueryParams Params	 = HttpReq.GetQueryParams();
+			TraceType							 Type	 = TraceType::None;
+			std::string							 HostOrPath;
+			if (auto Param = Params.GetValue("file"); Param.empty() == false)
+			{
+				Type	   = TraceType::File;
+				HostOrPath = Param;
+			}
+			if (auto Param = Params.GetValue("host"); Param.empty() == false)
+			{
+				Type	   = TraceType::Network;
+				HostOrPath = Param;
+			}
+			if (Type == TraceType::None)
+			{
+				return Req.ServerRequest().WriteResponse(HttpResponseCode::BadRequest,
+														 HttpContentType::kText,
+														 "Invalid trace type, use `file` or `host`"sv);
+			}
+			if (IsTracing())
+			{
+				return Req.ServerRequest().WriteResponse(HttpResponseCode::BadRequest,
+														 HttpContentType::kText,
+														 "Tracing is already enabled"sv);
+			}
+			TraceStart(HostOrPath.c_str(), Type);
+			return Req.ServerRequest().WriteResponse(HttpResponseCode::OK, HttpContentType::kText, "Tracing started");
+		},
+		HttpVerb::kPost);
+
+	m_Router.RegisterRoute(
+		"trace/stop",
+		[this](HttpRouterRequest& Req) {
+			if (!IsTracing())
+			{
+				return Req.ServerRequest().WriteResponse(HttpResponseCode::BadRequest, HttpContentType::kText, "Tracing is not enabled"sv);
+			}
+			if (TraceStop())
+			{
+				return Req.ServerRequest().WriteResponse(HttpResponseCode::OK, HttpContentType::kText, "Tracing stopped");
+			}
+			else
+			{
+				return Req.ServerRequest().WriteResponse(HttpResponseCode::InternalServerError,
+														 HttpContentType::kText,
+														 "Failed stopping trace");
+			}
+		},
+		HttpVerb::kPost);
+#endif	// ZEN_WITH_TRACE
 }
 
 HttpAdminService::~HttpAdminService()