Allow to not collect process arguments

Author: erthalion

collector/lib/CollectorConfig.cpp

@@ -58,6 +58,8 @@ BoolEnvVar use_podman_ce("ROX_COLLECTOR_CE_USE_PODMAN", false);
 
 BoolEnvVar enable_introspection("ROX_COLLECTOR_INTROSPECTION_ENABLE", false);
 
+BoolEnvVar disable_process_arguments("ROX_COLLECTOR_NO_PROCESS_ARGUMENTS", false);
+
 }  // namespace
 
 constexpr bool CollectorConfig::kTurnOffScrape;
@@ -87,6 +89,7 @@ void CollectorConfig::InitCollectorConfig(CollectorArgs* args) {
   use_docker_ce_ = use_docker_ce.value();
   use_podman_ce_ = use_podman_ce.value();
   enable_introspection_ = enable_introspection.value();
+  disable_process_arguments_ = disable_process_arguments.value();
 
   for (const auto& syscall : kSyscalls) {
     syscalls_.push_back(syscall);

collector/lib/CollectorConfig.h

@@ -87,6 +87,7 @@ class CollectorConfig {
   unsigned int GetSinspBufferSize() const;
   unsigned int GetSinspTotalBufferSize() const { return sinsp_total_buffer_size_; }
   unsigned int GetSinspThreadCacheSize() const { return sinsp_thread_cache_size_; }
+  bool DisableProcessArguments() const { return disable_process_arguments_; }
 
   std::shared_ptr<grpc::Channel> grpc_channel;
 
@@ -122,6 +123,8 @@ class CollectorConfig {
   double connection_stats_error_;
   unsigned int connection_stats_window_;
 
+  bool disable_process_arguments_ = false;
+
   // One ring buffer will be initialized for this many CPUs
   unsigned int sinsp_cpu_per_buffer_ = 0;
   // Size of one ring buffer, in bytes.

collector/lib/ProcessSignalFormatter.cpp

@@ -135,11 +135,13 @@ ProcessSignal* ProcessSignalFormatter::CreateProcessSignal(sinsp_evt* event) {
     signal->set_exec_file_path(name_sanitized ? *name_sanitized : *name);
   }
 
-  // set process arguments
-  if (const char* args = event_extractor_->get_proc_args(event)) {
-    std::string args_str = args;
-    auto args_sanitized = SanitizedUTF8(args_str);
-    signal->set_args(args_sanitized ? *args_sanitized : args_str);
+  // set process arguments, if not explicitely disabled
+  if (!config_.DisableProcessArguments()) {
+    if (const char* args = event_extractor_->get_proc_args(event)) {
+      std::string args_str = args;
+      auto args_sanitized = SanitizedUTF8(args_str);
+      signal->set_args(args_sanitized ? *args_sanitized : args_str);
+    }
   }
 
   // set pid