feature: add net collector (alibaba#2265)

* feature: add net collector

* fix net ut

* fix net collector and add m label in system collector

Author: WRPStephanie

core/host_monitor/Constants.cpp

@@ -24,6 +24,10 @@ std::filesystem::path PROCESS_DIR = "/proc";
 const std::filesystem::path PROCESS_STAT = "stat";
 const std::filesystem::path PROCESS_LOADAVG = "loadavg";
 const std::filesystem::path PROCESS_MEMINFO = "meminfo";
+const std::filesystem::path PROCESS_NET_SOCKSTAT = "net/sockstat";
+const std::filesystem::path PROCESS_NET_SOCKSTAT6 = "net/sockstat6";
+const std::filesystem::path PROCESS_NET_DEV = "net/dev";
+const std::filesystem::path PROCESS_NET_IF_INET6 = "net/if_inet6";
 const int64_t SYSTEM_HERTZ = sysconf(_SC_CLK_TCK);
 
 } // namespace logtail

core/host_monitor/Constants.h

@@ -26,6 +26,11 @@ extern std::filesystem::path PROCESS_DIR;
 const extern std::filesystem::path PROCESS_STAT;
 const extern std::filesystem::path PROCESS_LOADAVG;
 const extern std::filesystem::path PROCESS_MEMINFO;
+
+const extern std::filesystem::path PROCESS_NET_SOCKSTAT;
+const extern std::filesystem::path PROCESS_NET_SOCKSTAT6;
+const extern std::filesystem::path PROCESS_NET_DEV;
+const extern std::filesystem::path PROCESS_NET_IF_INET6;
 const extern int64_t SYSTEM_HERTZ;
 
 #ifdef __ENTERPRISE__

core/host_monitor/HostMonitorInputRunner.cpp

@@ -37,6 +37,7 @@
 #include "host_monitor/HostMonitorTimerEvent.h"
 #include "host_monitor/collector/CPUCollector.h"
 #include "host_monitor/collector/MemCollector.h"
+#include "host_monitor/collector/NetCollector.h"
 #include "host_monitor/collector/ProcessEntityCollector.h"
 #include "host_monitor/collector/SystemCollector.h"
 #include "logger/Logger.h"
@@ -58,6 +59,7 @@ HostMonitorInputRunner::HostMonitorInputRunner() {
     RegisterCollector<CPUCollector>();
     RegisterCollector<SystemCollector>();
     RegisterCollector<MemCollector>();
+    RegisterCollector<NetCollector>();
 
     size_t threadPoolSize = 1;
     // threadPoolSize should be greater than 0