Refactor: re_sdk no longer depends on re_viewer

.github/workflows/typos.yml

@@ -1,5 +1,6 @@
 # https://github.com/crate-ci/typos
 # Add exceptions to _typos.toml
+# install and run locally: cargo install typos-cli && typos
 
 name: Spell Check
 on: [pull_request]

crates/re_analytics/src/lib.rs

@@ -106,13 +106,27 @@ impl Event {
 
     /// Adds Rerun version, git hash, build date and similar as properties to the event.
     pub fn with_build_info(self, build_info: &re_build_info::BuildInfo) -> Event {
-        self.with_prop("rerun_version", build_info.version.to_string())
-            .with_prop("target", build_info.target_triple)
+        let re_build_info::BuildInfo {
+            crate_name: _,
+            version,
+            rustc_version,
+            llvm_version,
+            git_hash: _,
+            git_branch,
+            is_in_rerun_workspace,
+            target_triple,
+            datetime,
+        } = build_info;
+
+        self.with_prop("rerun_version", version.to_string())
+            .with_prop("rust_version", (*rustc_version).to_owned())
+            .with_prop("llvm_version", (*llvm_version).to_owned())
+            .with_prop("target", *target_triple)
             .with_prop("git_hash", build_info.git_hash_or_tag())
-            .with_prop("git_branch", build_info.git_branch)
-            .with_prop("build_date", build_info.datetime)
+            .with_prop("git_branch", *git_branch)
+            .with_prop("build_date", *datetime)
             .with_prop("debug", cfg!(debug_assertions)) // debug-build?
-            .with_prop("rerun_workspace", build_info.is_in_rerun_workspace)
+            .with_prop("rerun_workspace", *is_in_rerun_workspace)
     }
 }
 

crates/re_build_build_info/src/lib.rs

@@ -36,6 +36,11 @@ pub fn export_env_vars() {
     set_env("RE_BUILD_GIT_HASH", &git_hash().unwrap_or_default());
     set_env("RE_BUILD_GIT_BRANCH", &git_branch().unwrap_or_default());
 
+    // rust version
+    let (rustc, llvm) = rust_version().unwrap_or_default();
+    set_env("RE_BUILD_RUSTC_VERSION", &rustc);
+    set_env("RE_BUILD_LLVM_VERSION", &llvm);
+
     // We need to check `IS_IN_RERUN_WORKSPACE` in the build-script (here),
     // because otherwise it won't show up when compiling through maturin.
     // We must also make an exception for when we build actual wheels (on CI) for release.
@@ -74,7 +79,7 @@ fn set_env(name: &str, value: &str) {
     println!("cargo:rustc-env={name}={value}");
 }
 
-fn run_command(cmd: &'static str, args: &[&str]) -> anyhow::Result<String> {
+fn run_command(cmd: &str, args: &[&str]) -> anyhow::Result<String> {
     let output = Command::new(cmd)
         .args(args)
         .output()
@@ -101,3 +106,42 @@ fn git_branch() -> anyhow::Result<String> {
 fn git_path(path: &str) -> anyhow::Result<String> {
     run_command("git", &["rev-parse", "--git-path", path])
 }
+
+/// Returns `(rustc, LLVM)` versions.
+///
+/// Defaults to `"unknown"` if, for whatever reason, the output from `rustc -vV` did not contain
+/// version information and/or the output format underwent breaking changes.
+fn rust_version() -> anyhow::Result<(String, String)> {
+    let cmd = std::env::var("RUSTC").unwrap_or("rustc".into());
+    let args = &["-vV"];
+
+    // $ rustc -vV
+    // rustc 1.67.0 (fc594f156 2023-01-24)
+    // binary: rustc
+    // commit-hash: fc594f15669680fa70d255faec3ca3fb507c3405
+    // commit-date: 2023-01-24
+    // host: x86_64-unknown-linux-gnu
+    // release: 1.67.0
+    // LLVM version: 15.0.6
+
+    let res = run_command(&cmd, args)?;
+
+    let mut rustc_version = None;
+    let mut llvm_version = None;
+
+    for line in res.lines() {
+        if let Some(version) = line.strip_prefix("rustc ") {
+            rustc_version = Some(version.to_owned());
+        } else if let Some(version) = line.strip_prefix("LLVM version: ") {
+            llvm_version = Some(version.to_owned());
+        }
+    }
+
+    // NOTE: This should never happen, but if it does, we want to make sure we can differentiate
+    // between "failed to invoke rustc" vs. "rustc's output did not contain any version (??)
+    // and/or the output format has changed".
+    Ok((
+        rustc_version.unwrap_or_else(|| "unknown".to_owned()),
+        llvm_version.unwrap_or_else(|| "unknown".to_owned()),
+    ))
+}

crates/re_build_info/src/build_info.rs

@@ -17,6 +17,12 @@ pub struct BuildInfo {
     /// Crate version, parsed from `CARGO_PKG_VERSION`, ignoring any `+metadata` suffix.
     pub version: super::CrateVersion,
 
+    /// The raw version string of the Rust compiler used, or an empty string.
+    pub rustc_version: &'static str,
+
+    /// The raw version string of the LLVM toolchain used, or an empty string.
+    pub llvm_version: &'static str,
+
     /// Git commit hash, or empty string.
     pub git_hash: &'static str,
 
@@ -55,15 +61,28 @@ impl std::fmt::Display for BuildInfo {
         let Self {
             crate_name,
             version,
+            rustc_version,
+            llvm_version,
             git_hash,
             git_branch,
             is_in_rerun_workspace: _,
             target_triple,
             datetime,
         } = self;
 
+        let rustc_version = (!rustc_version.is_empty()).then(|| format!("rustc {rustc_version}"));
+        let llvm_version = (!llvm_version.is_empty()).then(|| format!("LLVM {llvm_version}"));
+
         write!(f, "{crate_name} {version}")?;
 
+        if let Some(rustc_version) = rustc_version {
+            write!(f, " [{rustc_version}")?;
+            if let Some(llvm_version) = llvm_version {
+                write!(f, ", {llvm_version}")?;
+            }
+            write!(f, "]")?;
+        }
+
         write!(f, " {target_triple}")?;
 
         if !git_branch.is_empty() {

crates/re_build_info/src/lib.rs

@@ -16,8 +16,12 @@ macro_rules! build_info {
         $crate::BuildInfo {
             crate_name: env!("CARGO_PKG_NAME"),
             version: $crate::CrateVersion::parse(env!("CARGO_PKG_VERSION")),
+            rustc_version: env!("RE_BUILD_RUSTC_VERSION"),
+            llvm_version: env!("RE_BUILD_LLVM_VERSION"),
             git_hash: env!("RE_BUILD_GIT_HASH"),
             git_branch: env!("RE_BUILD_GIT_BRANCH"),
+            // TODO(cmc): `PartialEq` is not available in const contexts, so this won't actually
+            // build if you try to instantiate a BuildInfo in a constant.
             is_in_rerun_workspace: env!("RE_BUILD_IS_IN_RERUN_WORKSPACE") == "yes",
             target_triple: env!("RE_BUILD_TARGET_TRIPLE"),
             datetime: env!("RE_BUILD_DATETIME"),

crates/re_log_types/src/encoding.rs

@@ -233,7 +233,8 @@ fn test_encode_decode() {
             is_official_example: true,
             started: Time::now(),
             recording_source: crate::RecordingSource::RustSdk {
-                rust_version: env!("CARGO_PKG_RUST_VERSION").into(),
+                rustc_version: String::new(),
+                llvm_version: String::new(),
             },
         },
     })];

crates/re_log_types/src/lib.rs

@@ -261,7 +261,8 @@ pub enum RecordingSource {
 
     /// The official Rerun Rust Logging SDK
     RustSdk {
-        rust_version: String,
+        rustc_version: String,
+        llvm_version: String,
     },
 
     /// Perhaps from some manual data ingestion?
@@ -273,7 +274,10 @@ impl std::fmt::Display for RecordingSource {
         match self {
             Self::Unknown => "Unknown".fmt(f),
             Self::PythonSdk(version) => write!(f, "Python {version} SDK"),
-            Self::RustSdk { rust_version } => write!(f, "Rust {rust_version} SDK"),
+            Self::RustSdk {
+                rustc_version: rust_version,
+                llvm_version: _,
+            } => write!(f, "Rust {rust_version} SDK"),
             Self::Other(string) => format!("{string:?}").fmt(f), // put it in quotes
         }
     }

crates/re_sdk/Cargo.toml

@@ -17,64 +17,51 @@ all-features = true
 
 
 [features]
-default = ["demo", "glam", "image", "native_viewer"]
-
-## Enable telemetry using our analytics SDK.
-analytics = ["re_web_viewer_server?/analytics", "re_viewer?/analytics"]
+default = ["demo", "glam", "image"]
 
 ## Enable the `demo` module (helpers for Rerun examples).
 demo = []
 
 ## Add support for some math operations using [`glam`](https://crates.io/crates/glam/).
 glam = ["re_log_types/glam"]
 
+## Add the `global_session` method.
+global_session = ["dep:once_cell", "dep:parking_lot"]
+
 ## Integration with the [`image`](https://crates.io/crates/image/) crate.
 image = ["re_log_types/image"]
 
-## Support for the native viewer.
-native_viewer = ["image", "dep:re_viewer"]
-
-## Support serving a web viewer over HTTP.
-##
-## Enabling this adds quite a bit to the compile time and binary size,
-## since it requires compiling and bundling the viewer as wasm.
-##
-## You also need to install some additional tools, which you can do by running
-## [`scripts/setup_web.sh`](https://github.com/rerun-io/rerun/blob/main/scripts/setup_web.sh).
-web_viewer = ["dep:re_ws_comms", "dep:re_web_viewer_server", "dep:webbrowser"]
+# Add a tokio runtime to the `Session` type.
+tokio_runtime = ["dep:tokio"]
 
 
 [dependencies]
 re_build_info.workspace = true
 re_error.workspace = true
-re_log.workspace = true
 re_log_types.workspace = true
+re_log.workspace = true
 re_memory.workspace = true
 re_sdk_comms = { workspace = true, features = ["client"] }
 re_smart_channel.workspace = true
-re_string_interner.workspace = true
 
 anyhow.workspace = true
 arrow2.workspace = true
 crossbeam = "0.8"
 document-features = "0.2"
 lazy_static.workspace = true
 nohash-hasher = "0.2"
-once_cell = "1.12"
-parking_lot = "0.12"
 thiserror.workspace = true
 
 # Optional dependencies:
-re_ws_comms = { workspace = true, optional = true, features = ["server"] }
-re_viewer = { workspace = true, default-features = false, optional = true }
-re_web_viewer_server = { workspace = true, optional = true }
-
-webbrowser = { version = "0.8", optional = true }
+once_cell = { version = "1.12", optional = true }
+parking_lot = { version = "0.12", optional = true }
 
 # Native dependencies:
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
-clap = { workspace = true, features = ["derive"] }
-tokio = { workspace = true, features = ["macros", "rt-multi-thread"] }
+tokio = { workspace = true, optional = true, features = [
+  "macros",
+  "rt-multi-thread",
+] }
 
 
 [dev-dependencies]

crates/re_sdk/src/demo_util.rs

@@ -70,7 +70,7 @@ pub fn grid(from: glam::Vec3, to: glam::Vec3, n: usize) -> impl Iterator<Item =
 /// * `angular_step`: The factor applied between each step along the trigonometric circle.
 /// * `angular_offset`: Offsets the starting position on the trigonometric circle.
 /// * `z_step`: The factor applied between between each step along the Z axis.
-#[cfg(all(feature = "glam", feature = "native_viewer"))]
+#[cfg(feature = "glam")]
 pub fn color_spiral(
     num_points: usize,
     radius: f32,
@@ -91,10 +91,34 @@ pub fn color_spiral(
         .collect();
 
     let colors = (0..num_points)
-        .map(move |i| {
-            re_viewer::external::re_renderer::colormap_turbo_srgb(i as f32 / num_points as f32)
-        })
+        .map(move |i| colormap_turbo_srgb(i as f32 / num_points as f32))
         .collect();
 
     (points, colors)
 }
+
+/// Returns sRGB polynomial approximation from Turbo color map, assuming `t` is normalized.
+fn colormap_turbo_srgb(t: f32) -> [u8; 4] {
+    #![allow(clippy::excessive_precision)]
+    use glam::{Vec2, Vec4, Vec4Swizzles};
+
+    const R4: Vec4 = Vec4::new(0.13572138, 4.61539260, -42.66032258, 132.13108234);
+    const G4: Vec4 = Vec4::new(0.09140261, 2.19418839, 4.84296658, -14.18503333);
+    const B4: Vec4 = Vec4::new(0.10667330, 12.64194608, -60.58204836, 110.36276771);
+
+    const R2: Vec2 = Vec2::new(-152.94239396, 59.28637943);
+    const G2: Vec2 = Vec2::new(4.27729857, 2.82956604);
+    const B2: Vec2 = Vec2::new(-89.90310912, 27.34824973);
+
+    debug_assert!((0.0..=1.0).contains(&t));
+
+    let v4 = glam::vec4(1.0, t, t * t, t * t * t);
+    let v2 = v4.zw() * v4.z;
+
+    [
+        ((v4.dot(R4) + v2.dot(R2)) * 255.0) as u8,
+        ((v4.dot(G4) + v2.dot(G2)) * 255.0) as u8,
+        ((v4.dot(B4) + v2.dot(B2)) * 255.0) as u8,
+        255,
+    ]
+}

crates/re_sdk/src/file_writer.rs

@@ -2,6 +2,7 @@ use anyhow::Context as _;
 
 use re_log_types::LogMsg;
 
+/// Stream log messages to a file.
 pub struct FileWriter {
     // None = quit
     tx: std::sync::mpsc::Sender<Option<LogMsg>>,
@@ -50,8 +51,10 @@ impl FileWriter {
             join_handle: Some(join_handle),
         })
     }
+}
 
-    pub fn write(&self, msg: LogMsg) {
+impl crate::LogSink for FileWriter {
+    fn send(&mut self, msg: LogMsg) {
         self.tx.send(Some(msg)).ok();
     }
 }