implement consistent open/import behavior for all cases

Cargo.lock

@@ -5376,6 +5376,7 @@ dependencies = [
  "re_types",
  "tempfile",
  "thiserror",
+ "uuid",
  "walkdir",
 ]
 
@@ -6415,6 +6416,7 @@ dependencies = [
  "strum",
  "strum_macros",
  "thiserror",
+ "uuid",
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "web-sys",

crates/store/re_data_loader/Cargo.toml

@@ -43,6 +43,7 @@ once_cell.workspace = true
 parking_lot.workspace = true
 rayon.workspace = true
 thiserror.workspace = true
+uuid.workspace = true
 walkdir.workspace = true
 
 [target.'cfg(not(any(target_arch = "wasm32")))'.dependencies]

crates/store/re_data_loader/src/lib.rs

@@ -64,6 +64,12 @@ pub struct DataLoaderSettings {
     /// The [`re_log_types::StoreId`] that is currently opened in the viewer, if any.
     pub opened_store_id: Option<re_log_types::StoreId>,
 
+    /// Whether `SetStoreInfo`s should be sent, regardless of the surrounding context.
+    ///
+    /// Only useful when creating a recording just-in-time directly in the viewer (which is what
+    /// happens when importing things into the welcome screen).
+    pub force_store_info: bool,
+
     /// What should the logged entity paths be prefixed with?
     pub entity_path_prefix: Option<EntityPath>,
 
@@ -79,6 +85,7 @@ impl DataLoaderSettings {
             opened_application_id: Default::default(),
             store_id: store_id.into(),
             opened_store_id: Default::default(),
+            force_store_info: false,
             entity_path_prefix: Default::default(),
             timepoint: Default::default(),
         }
@@ -91,6 +98,7 @@ impl DataLoaderSettings {
             opened_application_id,
             store_id,
             opened_store_id,
+            force_store_info: _,
             entity_path_prefix,
             timepoint,
         } = self;

crates/store/re_data_loader/src/load_file.rs

@@ -37,7 +37,7 @@ pub fn load_from_path(
 
     let rx = load(settings, path, None)?;
 
-    send(settings.clone(), file_source, path.to_owned(), rx, tx);
+    send(settings.clone(), file_source, rx, tx);
 
     Ok(())
 }
@@ -64,7 +64,7 @@ pub fn load_from_file_contents(
 
     let data = load(settings, filepath, Some(contents))?;
 
-    send(settings.clone(), file_source, filepath.to_owned(), data, tx);
+    send(settings.clone(), file_source, data, tx);
 
     Ok(())
 }
@@ -73,21 +73,20 @@ pub fn load_from_file_contents(
 
 /// Prepares an adequate [`re_log_types::StoreInfo`] [`LogMsg`] given the input.
 pub(crate) fn prepare_store_info(
+    application_id: re_log_types::ApplicationId,
     store_id: &re_log_types::StoreId,
     file_source: FileSource,
-    path: &std::path::Path,
 ) -> LogMsg {
-    re_tracing::profile_function!(path.display().to_string());
+    re_tracing::profile_function!();
 
     use re_log_types::SetStoreInfo;
 
-    let app_id = re_log_types::ApplicationId(path.display().to_string());
     let store_source = re_log_types::StoreSource::File { file_source };
 
     LogMsg::SetStoreInfo(SetStoreInfo {
         row_id: *re_chunk::RowId::new(),
         info: re_log_types::StoreInfo {
-            application_id: app_id.clone(),
+            application_id,
             store_id: store_id.clone(),
             cloned_from: None,
             is_official_example: false,
@@ -263,7 +262,6 @@ pub(crate) fn load(
 pub(crate) fn send(
     settings: crate::DataLoaderSettings,
     file_source: FileSource,
-    path: std::path::PathBuf,
     rx_loader: std::sync::mpsc::Receiver<LoadedData>,
     tx: &Sender<LogMsg>,
 ) {
@@ -310,11 +308,17 @@ pub(crate) fn send(
                 let is_a_preexisting_recording =
                     Some(&store_id) == settings.opened_store_id.as_ref();
 
-                if store_info_already_created || is_a_preexisting_recording {
+                if !settings.force_store_info
+                    && (store_info_already_created || is_a_preexisting_recording)
+                {
                     continue;
                 }
 
-                let store_info = prepare_store_info(&store_id, file_source.clone(), &path);
+                let app_id = settings
+                    .opened_application_id
+                    .clone()
+                    .unwrap_or_else(|| uuid::Uuid::new_v4().to_string().into());
+                let store_info = prepare_store_info(app_id, &store_id, file_source.clone());
                 tx.send(store_info).ok();
             }
 

crates/store/re_data_source/src/data_source.rs

@@ -178,6 +178,7 @@ impl DataSource {
                 let settings = re_data_loader::DataLoaderSettings {
                     opened_application_id: file_source.recommended_application_id().cloned(),
                     opened_store_id: file_source.recommended_recording_id().cloned(),
+                    force_store_info: file_source.force_store_info(),
                     ..re_data_loader::DataLoaderSettings::recommended(shared_store_id)
                 };
                 re_data_loader::load_from_path(&settings, file_source, &path, &tx)
@@ -206,6 +207,7 @@ impl DataSource {
                 let settings = re_data_loader::DataLoaderSettings {
                     opened_application_id: file_source.recommended_application_id().cloned(),
                     opened_store_id: file_source.recommended_recording_id().cloned(),
+                    force_store_info: file_source.force_store_info(),
                     ..re_data_loader::DataLoaderSettings::recommended(shared_store_id)
                 };
                 re_data_loader::load_from_file_contents(
@@ -275,6 +277,7 @@ fn test_data_source_from_uri() {
     let file_source = FileSource::DragAndDrop {
         recommended_application_id: None,
         recommended_recording_id: None,
+        force_store_info: false,
     };
 
     for uri in file {

crates/store/re_log_types/src/lib.rs

@@ -418,6 +418,12 @@ pub enum FileSource {
         /// The [`StoreId`] that the viewer heuristically recommends should be used when loading
         /// this data source, based on the surrounding context.
         recommended_recording_id: Option<StoreId>,
+
+        /// Whether `SetStoreInfo`s should be sent, regardless of the surrounding context.
+        ///
+        /// Only useful when creating a recording just-in-time directly in the viewer (which is what
+        /// happens when importing things into the welcome screen).
+        force_store_info: bool,
     },
 
     FileDialog {
@@ -428,6 +434,12 @@ pub enum FileSource {
         /// The [`StoreId`] that the viewer heuristically recommends should be used when loading
         /// this data source, based on the surrounding context.
         recommended_recording_id: Option<StoreId>,
+
+        /// Whether `SetStoreInfo`s should be sent, regardless of the surrounding context.
+        ///
+        /// Only useful when creating a recording just-in-time directly in the viewer (which is what
+        /// happens when importing things into the welcome screen).
+        force_store_info: bool,
     },
 
     Sdk,
@@ -463,6 +475,19 @@ impl FileSource {
             Self::Cli | Self::Sdk => None,
         }
     }
+
+    #[inline]
+    pub fn force_store_info(&self) -> bool {
+        match self {
+            Self::FileDialog {
+                force_store_info, ..
+            }
+            | Self::DragAndDrop {
+                force_store_info, ..
+            } => *force_store_info,
+            Self::Cli | Self::Sdk => false,
+        }
+    }
 }
 
 /// The source of a recording or blueprint.

crates/top/re_sdk/src/recording_stream.rs

@@ -1259,6 +1259,7 @@ impl RecordingStream {
             opened_application_id: None,
             store_id: store_info.store_id.clone(),
             opened_store_id: None,
+            force_store_info: false,
             entity_path_prefix,
             timepoint: (!static_).then(|| {
                 self.with(|inner| {

crates/viewer/re_viewer/Cargo.toml

@@ -120,6 +120,7 @@ serde = { workspace = true, features = ["derive"] }
 serde_json.workspace = true
 serde-wasm-bindgen.workspace = true
 thiserror.workspace = true
+uuid.workspace = true
 web-time.workspace = true
 wgpu.workspace = true
 

crates/viewer/re_viewer/src/app.rs

@@ -150,6 +150,7 @@ const MAX_ZOOM_FACTOR: f32 = 5.0;
 struct PendingFilePromise {
     recommended_application_id: Option<ApplicationId>,
     recommended_recording_id: Option<re_log_types::StoreId>,
+    force_store_info: bool,
     promise: poll_promise::Promise<Vec<re_data_source::FileContents>>,
 }
 
@@ -573,17 +574,33 @@ impl App {
         store_context: Option<&StoreContext<'_>>,
         cmd: UICommand,
     ) {
+        let mut force_store_info = false;
         let active_application_id = store_context
             .and_then(|ctx| {
                 ctx.hub
                     .active_app()
                     // Don't redirect data to the welcome screen.
                     .filter(|&app_id| app_id != &StoreHub::welcome_screen_app_id())
+                    .cloned()
             })
-            .cloned();
+            // If we don't have any application ID to recommend (which means we are on the welcome screen),
+            // then just generate a new one using a UUID.
+            .or_else(|| Some(uuid::Uuid::new_v4().to_string().into()));
         let active_recording_id = store_context
-            .and_then(|ctx| ctx.hub.active_recording_id())
-            .cloned();
+            .and_then(|ctx| ctx.hub.active_recording_id().cloned())
+            .or_else(|| {
+                // When we're on the welcome screen, there is no recording ID to recommend.
+                // But we want one, otherwise multiple things being dropped simultaneously on the
+                // welcome screen would end up in different recordings!
+
+                // We're creating a recording just-in-time, directly from the viewer.
+                // We need those store infos or the data will just be silently ignored.
+                force_store_info = true;
+
+                // NOTE: We don't override blueprints' store IDs anyhow, so it is sound to assume that
+                // this can only be a recording.
+                Some(re_log_types::StoreId::random(StoreKind::Recording))
+            });
 
         match cmd {
             UICommand::SaveRecording => {
@@ -615,6 +632,7 @@ impl App {
                             FileSource::FileDialog {
                                 recommended_application_id: None,
                                 recommended_recording_id: None,
+                                force_store_info,
                             },
                             file_path,
                         )));
@@ -624,18 +642,16 @@ impl App {
             UICommand::Open => {
                 let egui_ctx = egui_ctx.clone();
 
-                // Open: we want to try and load into a new dedicated recording.
-                let recommended_application_id = None;
-                let recommended_recording_id = None;
                 let promise = poll_promise::Promise::spawn_local(async move {
                     let file = async_open_rrd_dialog().await;
                     egui_ctx.request_repaint(); // Wake ui thread
                     file
                 });
 
                 self.open_files_promise = Some(PendingFilePromise {
-                    recommended_application_id,
-                    recommended_recording_id,
+                    recommended_application_id: None,
+                    recommended_recording_id: None,
+                    force_store_info,
                     promise,
                 });
             }
@@ -648,6 +664,7 @@ impl App {
                             FileSource::FileDialog {
                                 recommended_application_id: active_application_id.clone(),
                                 recommended_recording_id: active_recording_id.clone(),
+                                force_store_info,
                             },
                             file_path,
                         )));
@@ -657,19 +674,16 @@ impl App {
             UICommand::Import => {
                 let egui_ctx = egui_ctx.clone();
 
-                // Import: we want to try and load into the current recording.
-                let recommended_application_id = active_application_id;
-                let recommended_recording_id = active_recording_id;
-
                 let promise = poll_promise::Promise::spawn_local(async move {
                     let file = async_open_rrd_dialog().await;
                     egui_ctx.request_repaint(); // Wake ui thread
                     file
                 });
 
                 self.open_files_promise = Some(PendingFilePromise {
-                    recommended_application_id,
-                    recommended_recording_id,
+                    recommended_application_id: active_application_id.clone(),
+                    recommended_recording_id: active_recording_id.clone(),
+                    force_store_info,
                     promise,
                 });
             }
@@ -1364,17 +1378,33 @@ impl App {
             return;
         }
 
+        let mut force_store_info = false;
         let active_application_id = store_ctx
             .and_then(|ctx| {
                 ctx.hub
                     .active_app()
                     // Don't redirect data to the welcome screen.
                     .filter(|&app_id| app_id != &StoreHub::welcome_screen_app_id())
+                    .cloned()
             })
-            .cloned();
+            // If we don't have any application ID to recommend (which means we are on the welcome screen),
+            // then just generate a new one using a UUID.
+            .or_else(|| Some(uuid::Uuid::new_v4().to_string().into()));
         let active_recording_id = store_ctx
-            .and_then(|ctx| ctx.hub.active_recording_id())
-            .cloned();
+            .and_then(|ctx| ctx.hub.active_recording_id().cloned())
+            .or_else(|| {
+                // When we're on the welcome screen, there is no recording ID to recommend.
+                // But we want one, otherwise multiple things being dropped simultaneously on the
+                // welcome screen would end up in different recordings!
+
+                // We're creating a recording just-in-time, directly from the viewer.
+                // We need those store infos or the data will just be silently ignored.
+                force_store_info = true;
+
+                // NOTE: We don't override blueprints' store IDs anyhow, so it is sound to assume that
+                // this can only be a recording.
+                Some(re_log_types::StoreId::random(StoreKind::Recording))
+            });
 
         for file in dropped_files {
             if let Some(bytes) = file.bytes {
@@ -1384,6 +1414,7 @@ impl App {
                         FileSource::DragAndDrop {
                             recommended_application_id: active_application_id.clone(),
                             recommended_recording_id: active_recording_id.clone(),
+                            force_store_info,
                         },
                         FileContents {
                             name: file.name.clone(),
@@ -1400,6 +1431,7 @@ impl App {
                     FileSource::DragAndDrop {
                         recommended_application_id: active_application_id.clone(),
                         recommended_recording_id: active_recording_id.clone(),
+                        force_store_info,
                     },
                     path,
                 )));
@@ -1650,6 +1682,7 @@ impl eframe::App for App {
         if let Some(PendingFilePromise {
             recommended_application_id,
             recommended_recording_id,
+            force_store_info,
             promise,
         }) = &self.open_files_promise
         {
@@ -1660,6 +1693,7 @@ impl eframe::App for App {
                             FileSource::FileDialog {
                                 recommended_application_id: recommended_application_id.clone(),
                                 recommended_recording_id: recommended_recording_id.clone(),
+                                force_store_info: *force_store_info,
                             },
                             file.clone(),
                         )));