Collect netsimd logs with `cvd host_bugreport`.

Bug: 341905936
Test: cvd host_bugreport

Change-Id: I23bf96bc46d79b78adbe7e87483d8ba5dbcbd8d5

1 files changed, 24 insertions, 0 deletions

diff --git a/host/commands/host_bugreport/main.cc b/host/commands/host_bugreport/main.cc
index 071e08698..fc68c41eb 100644
--- a/host/commands/host_bugreport/main.cc
+++ b/host/commands/host_bugreport/main.cc
@@ -48,6 +48,28 @@ void SaveFile(ZipWriter& writer, const std::string& zip_path,
   }
 }
 
+Result<void> AddNetsimdLogs(ZipWriter& writer) {
+  // The temp directory name depends on whether the `USER` environment variable
+  // is defined.
+  // https://source.corp.google.com/h/googleplex-android/platform/superproject/main/+/main:tools/netsim/rust/common/src/system/mod.rs;l=37-57;drc=360ddb57df49472a40275b125bb56af2a65395c7
+  std::string user = StringFromEnv("USER", "");
+  std::string dir = user.empty() ? "/tmp/android/netsimd"
+                                 : fmt::format("/tmp/android-{}/netsimd", user);
+  if (!DirectoryExists(dir)) {
+    LOG(INFO) << "netsimd logs directory: `" << dir << "` does not exist.";
+    return {};
+  }
+  auto names =
+      CF_EXPECTF(DirectoryContents(dir), "Cannot read from {} directory.", dir);
+  for (const auto& name : names) {
+    if (name == "." || name == "..") {
+      continue;
+    }
+    SaveFile(writer, "netsimd/" + name, dir + "/" + name);
+  }
+  return {};
+}
+
 Result<void> CvdHostBugreportMain(int argc, char** argv) {
   ::android::base::InitLogging(argv, android::base::StderrLogger);
   google::ParseCommandLineFlags(&argc, &argv, true);
@@ -108,6 +130,8 @@ Result<void> CvdHostBugreportMain(int argc, char** argv) {
     }
   }
 
+  CF_EXPECT(AddNetsimdLogs(writer));
+
   writer.Finish();
 
   LOG(INFO) << "Saved to \"" << FLAGS_output << "\"";