Remove usage of getrandom for rand dependency and for this crate

CHANGELOG.md

@@ -3,10 +3,11 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [0.13.5] - 2025-07-30
+## [0.13.5] - 2025-07-31
 
 ### Fixed  
 
+- [[#346](https://github.com/plotly/plotly.rs/pull/346)] Remove usage of `getrandom` for `rand` dependency and for this crate
 - [[#345](https://github.com/plotly/plotly.rs/pull/345)] Re-export `ImageFormat` from `plotly_static` into `plotly` 
 
 ## [0.13.4] - 2025-07-17

plotly/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "plotly"
-version = "0.13.4"
+version = "0.13.5"
 description = "A plotting library powered by Plotly.js"
 authors = [
     "Ioannis Giagkiozis <[email protected]>",
@@ -60,10 +60,12 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 serde_repr = "0.1"
 serde_with = ">=2, <4"
-rand = "0.9"
+rand = { version = "0.9", default-features = false, features = [
+    "small_rng",
+    "alloc",
+] }
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
-getrandom = { version = "0.3", features = ["wasm_js"] }
 wasm-bindgen-futures = { version = "0.4" }
 wasm-bindgen = { version = "0.2" }
 serde-wasm-bindgen = { version = "0.6.3" }

plotly/src/plot.rs

@@ -1,3 +1,5 @@
+use std::sync::atomic::{AtomicU64, Ordering};
+use std::time::{SystemTime, UNIX_EPOCH};
 use std::{fs::File, io::Write, path::Path};
 
 use askama::Template;
@@ -9,12 +11,15 @@ use plotly_kaleido::ImageFormat;
 use plotly_static::ImageFormat;
 use rand::{
     distr::{Alphanumeric, SampleString},
-    rng,
+    rngs::SmallRng,
+    SeedableRng,
 };
 use serde::Serialize;
 
 use crate::{layout::Frame, Configuration, Layout};
 
+static SEED_COUNTER: AtomicU64 = AtomicU64::new(0);
+
 #[derive(Template)]
 #[template(path = "plot.html", escape = "none")]
 struct PlotTemplate<'a> {
@@ -265,12 +270,12 @@ impl Plot {
     #[cfg(all(not(target_family = "wasm"), not(target_os = "android")))]
     pub fn show(&self) {
         use std::env;
-
         let rendered = self.render();
 
         // Set up the temp file with a unique filename.
         let mut temp = env::temp_dir();
-        let mut plot_name = Alphanumeric.sample_string(&mut rng(), 22);
+        let mut plot_name =
+            Alphanumeric.sample_string(&mut SmallRng::seed_from_u64(Self::generate_seed()), 22);
         plot_name.push_str(".html");
         plot_name = format!("plotly_{plot_name}");
         temp.push(plot_name);
@@ -313,7 +318,8 @@ impl Plot {
 
         // Set up the temp file with a unique filename.
         let mut temp = env::temp_dir();
-        let mut plot_name = Alphanumeric.sample_string(&mut rng(), 22);
+        let mut plot_name =
+            Alphanumeric.sample_string(&mut SmallRng::seed_from_u64(Self::generate_seed()), 22);
         plot_name.push_str(".html");
         plot_name = format!("plotly_{plot_name}");
         temp.push(plot_name);
@@ -371,13 +377,16 @@ impl Plot {
     pub fn to_inline_html(&self, plot_div_id: Option<&str>) -> String {
         let plot_div_id = match plot_div_id {
             Some(id) => id.to_string(),
-            None => Alphanumeric.sample_string(&mut rng(), 20),
+            None => {
+                Alphanumeric.sample_string(&mut SmallRng::seed_from_u64(Self::generate_seed()), 20)
+            }
         };
         self.render_inline(&plot_div_id)
     }
 
     fn to_jupyter_notebook_html(&self) -> String {
-        let plot_div_id = Alphanumeric.sample_string(&mut rng(), 20);
+        let plot_div_id =
+            Alphanumeric.sample_string(&mut SmallRng::seed_from_u64(Self::generate_seed()), 20);
 
         let tmpl = JupyterNotebookPlotTemplate {
             plot: self,
@@ -869,6 +878,17 @@ impl Plot {
             .spawn()
             .expect(DEFAULT_HTML_APP_NOT_FOUND);
     }
+
+    /// Generate unique seeds for SmallRng such that file names and div names
+    /// are unique random for each call
+    pub(crate) fn generate_seed() -> u64 {
+        let time = SystemTime::now()
+            .duration_since(UNIX_EPOCH)
+            .unwrap_or_default()
+            .as_nanos() as u64;
+        let counter = SEED_COUNTER.fetch_add(1, Ordering::Relaxed);
+        time ^ counter
+    }
 }
 
 impl PartialEq for Plot {

plotly_derive/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "plotly_derive"
-version = "0.13.4"
+version = "0.13.5"
 description = "Internal proc macro crate for Plotly-rs."
 authors = ["Ioannis Giagkiozis <[email protected]>"]
 license = "MIT"

plotly_kaleido/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "plotly_kaleido"
-version = "0.13.4"
+version = "0.13.5"
 description = "Additional output format support for plotly using Kaleido"
 authors = [
     "Ioannis Giagkiozis <[email protected]>",