docs: remove version from readme

Updates the requirements on [toml](https://github.com/toml-rs/toml) to
permit the latest version.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="c28f9ac30f"><code>c28f9ac</code></a>
chore: Release</li>
<li><a
href="f3a2299148"><code>f3a2299</code></a>
docs: Update changelog</li>
<li><a
href="69f09d3093"><code>69f09d3</code></a>
fix(lex): Don't loop over ')' for forever (<a
href="https://redirect.github.com/toml-rs/toml/issues/1003">#1003</a>)</li>
<li><a
href="cc68ae4f42"><code>cc68ae4</code></a>
fix(lex): Don't loop over ')' for forever</li>
<li><a
href="8c8ef44ea1"><code>8c8ef44</code></a>
chore: Release</li>
<li><a
href="b60ac5bfe9"><code>b60ac5b</code></a>
fix(toml): Correct minimal version for indexmap (<a
href="https://redirect.github.com/toml-rs/toml/issues/998">#998</a>)</li>
<li><a
href="966bd40511"><code>966bd40</code></a>
fix(toml): Correct minimal version for indexmap</li>
<li><a
href="2ed2af6519"><code>2ed2af6</code></a>
docs(readme): Mention additional crates</li>
<li><a
href="c7d93e5524"><code>c7d93e5</code></a>
chore: Release</li>
<li><a
href="1ac3aa136c"><code>1ac3aa1</code></a>
chore: Release</li>
<li>Additional commits viewable in <a
href="https://github.com/toml-rs/toml/compare/toml-v0.8.0...toml-v0.9.2">compare
view</a></li>
</ul>
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convert/Cargo.toml

@@ -13,7 +13,7 @@ description = "Traits to make Rust types usable with Extism"
 anyhow = "1.0.75"
 base64 = "~0.22"
 bytemuck = {version = "1.14.0", optional = true }
-prost = { version = "0.13.1", optional = true }
+prost = { version = "0.14.1", optional = true }
 protobuf = { version = "3.2.0", optional = true }
 rmp-serde = { version = "1.1.2", optional = true }
 serde = "1.0.186"

manifest/src/lib.rs

@@ -1,10 +1,6 @@
 use std::collections::BTreeMap;
 use std::path::{Path, PathBuf};
 
-mod local_path;
-
-pub use local_path::LocalPath;
-
 #[deprecated]
 pub type ManifestMemory = MemoryOptions;
 
@@ -283,7 +279,7 @@ pub struct Manifest {
     /// the path on disk to the path it should be available inside the plugin.
     /// For example, `".": "/tmp"` would mount the current directory as `/tmp` inside the module
     #[serde(default)]
-    pub allowed_paths: Option<BTreeMap<PathBuf, LocalPath>>,
+    pub allowed_paths: Option<BTreeMap<String, PathBuf>>,
 
     /// The plugin timeout in milliseconds
     #[serde(default)]
@@ -341,15 +337,15 @@ impl Manifest {
     }
 
     /// Add a path to `allowed_paths`
-    pub fn with_allowed_path(mut self, src: impl Into<LocalPath>, dest: impl AsRef<Path>) -> Self {
+    pub fn with_allowed_path(mut self, src: String, dest: impl AsRef<Path>) -> Self {
         let dest = dest.as_ref().to_path_buf();
         match &mut self.allowed_paths {
             Some(p) => {
-                p.insert(dest, src.into());
+                p.insert(src, dest);
             }
             None => {
                 let mut p = BTreeMap::new();
-                p.insert(dest, src.into());
+                p.insert(src, dest);
                 self.allowed_paths = Some(p);
             }
         }
@@ -358,8 +354,8 @@ impl Manifest {
     }
 
     /// Set `allowed_paths`
-    pub fn with_allowed_paths(mut self, paths: impl Iterator<Item = (LocalPath, PathBuf)>) -> Self {
-        self.allowed_paths = Some(paths.map(|(local, wasm)| (wasm, local)).collect());
+    pub fn with_allowed_paths(mut self, paths: impl Iterator<Item = (String, PathBuf)>) -> Self {
+        self.allowed_paths = Some(paths.collect());
         self
     }
 

manifest/src/local_path.rs

@@ -1,119 +0,0 @@
-use std::path::{Path, PathBuf};
-
-#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
-#[cfg_attr(feature = "json_schema", derive(schemars::JsonSchema))]
-pub enum LocalPath {
-    ReadOnly(PathBuf),
-    ReadWrite(PathBuf),
-}
-
-impl LocalPath {
-    pub fn as_path(&self) -> &Path {
-        match self {
-            LocalPath::ReadOnly(p) => p.as_path(),
-            LocalPath::ReadWrite(p) => p.as_path(),
-        }
-    }
-}
-
-impl From<&str> for LocalPath {
-    fn from(value: &str) -> Self {
-        if let Some(s) = value.strip_prefix("ro:") {
-            LocalPath::ReadOnly(PathBuf::from(s))
-        } else {
-            LocalPath::ReadWrite(PathBuf::from(value))
-        }
-    }
-}
-
-impl From<String> for LocalPath {
-    fn from(value: String) -> Self {
-        LocalPath::from(value.as_str())
-    }
-}
-
-impl From<PathBuf> for LocalPath {
-    fn from(value: PathBuf) -> Self {
-        LocalPath::ReadWrite(value)
-    }
-}
-
-impl From<&Path> for LocalPath {
-    fn from(value: &Path) -> Self {
-        LocalPath::ReadWrite(value.to_path_buf())
-    }
-}
-
-impl serde::Serialize for LocalPath {
-    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: serde::Serializer,
-    {
-        match self {
-            LocalPath::ReadOnly(path) => {
-                let s = match path.to_str() {
-                    Some(s) => s,
-                    None => {
-                        return Err(serde::ser::Error::custom(
-                            "Path contains invalid UTF-8 characters",
-                        ))
-                    }
-                };
-
-                format!("ro:{s}").serialize(serializer)
-            }
-            LocalPath::ReadWrite(path) => path.serialize(serializer),
-        }
-    }
-}
-
-struct LocalPathVisitor;
-
-impl serde::de::Visitor<'_> for LocalPathVisitor {
-    type Value = LocalPath;
-
-    fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
-        formatter.write_str("path string")
-    }
-
-    fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
-    where
-        E: serde::de::Error,
-    {
-        Ok(From::from(v))
-    }
-
-    fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
-    where
-        E: serde::de::Error,
-    {
-        Ok(From::from(v))
-    }
-
-    fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
-    where
-        E: serde::de::Error,
-    {
-        std::str::from_utf8(v)
-            .map(From::from)
-            .map_err(|_| serde::de::Error::invalid_value(serde::de::Unexpected::Bytes(v), &self))
-    }
-
-    fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
-    where
-        E: serde::de::Error,
-    {
-        String::from_utf8(v).map(From::from).map_err(|e| {
-            serde::de::Error::invalid_value(serde::de::Unexpected::Bytes(&e.into_bytes()), &self)
-        })
-    }
-}
-
-impl<'de> serde::Deserialize<'de> for LocalPath {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: serde::de::Deserializer<'de>,
-    {
-        deserializer.deserialize_string(LocalPathVisitor)
-    }
-}

runtime/Cargo.toml

@@ -9,29 +9,46 @@ repository.workspace = true
 version.workspace = true
 
 [dependencies]
-wasmtime = {version = ">= 27.0.0, < 31.0.0"}
-wasi-common = {version = ">= 27.0.0, < 31.0.0"}
-wiggle = {version = ">= 27.0.0, < 31.0.0"}
+wasmtime = { version = ">= 27.0.0, < 31.0.0", default-features = false, features = [
+  'cache',
+  'gc',
+  'gc-drc',
+  'cranelift',
+  'coredump',
+  'wat',
+  'parallel-compilation',
+  'pooling-allocator',
+  'demangle',
+] }
+wasi-common = { version = ">= 27.0.0, < 31.0.0" }
+wiggle = { version = ">= 27.0.0, < 31.0.0" }
 anyhow = "1"
-serde = {version = "1", features = ["derive"]}
+serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-toml = "0.8"
+toml = "0.9"
 sha2 = "0.10"
 tracing = "0.1"
-tracing-subscriber = {version = "0.3.18", features = ["std", "env-filter", "fmt"]}
+tracing-subscriber = { version = "0.3.18", features = [
+  "std",
+  "env-filter",
+  "fmt",
+] }
 url = "2"
 glob = "0.3"
-ureq = {version = "3.0", optional=true}
+ureq = { version = "3.0", optional = true }
 extism-manifest = { workspace = true }
 extism-convert = { workspace = true, features = ["extism-path"] }
 uuid = { version = "1", features = ["v4"] }
 libc = "0.2"
 
 [features]
-default = ["http", "register-http", "register-filesystem"]
-register-http = ["ureq"] # enables wasm to be downloaded using http
-register-filesystem = [] # enables wasm to be loaded from disk
-http = ["ureq"]          # enables extism_http_request
+default = ["http", "register-http", "register-filesystem", "wasmtime-default-features"]
+register-http = ["ureq"]                                   # enables wasm to be downloaded using http
+register-filesystem = []                                   # enables wasm to be loaded from disk
+http = ["ureq"]                                            # enables extism_http_request
+wasmtime-default-features = [
+  'wasmtime/default',
+]
 
 [build-dependencies]
 cbindgen = { version = "0.29", default-features = false }

runtime/README.md

@@ -12,7 +12,7 @@ To use the `extism` crate, you can add it to your Cargo file:
 
 ```toml
 [dependencies]
-extism = "1.4.1"
+extism = "*"
 ```
 
 ## Environment variables
@@ -112,7 +112,8 @@ let mut plugin = Plugin::new(&manifest, [], true);
 let res = plugin.call::<&str, &str>("count_vowels", "Yellow, world!").unwrap();
 println!("{}", res);
 # => {"count": 3, "total": 3, "vowels": "aeiouAEIOU"}
-let mut plugin = Plugin::new(&manifest, [], true).with_config_key("vowels", "aeiouyAEIOUY");
+let manifest = Manifest::new([url]).with_config_key("vowels", "aeiouyAEIOUY");
+let mut plugin = Plugin::new(&manifest, [], true).unwrap();
 let res = plugin.call::<&str, &str>("count_vowels", "Yellow, world!").unwrap();
 println!("{}", res);
 # => {"count": 4, "total": 4, "vowels": "aeiouyAEIOUY"}

runtime/examples/fs.rs

@@ -16,7 +16,7 @@ fn main() {
 
     let res = plugin.call::<&str, &str>("try_read", "").unwrap();
 
-    println!("{:?}", res);
+    println!("{res:?}");
 
     println!("-----------------------------------------------------");
 
@@ -30,7 +30,7 @@ fn main() {
     );
     let res2 = plugin.call::<&str, &str>("try_write", &line).unwrap();
 
-    println!("{:?}", res2);
+    println!("{res2:?}");
 
     println!("done!");
 }

runtime/examples/linking.rs

@@ -30,6 +30,6 @@ fn main() {
         let res = plugin
             .call::<&str, &str>("reflect", "Hello, world!")
             .unwrap();
-        println!("{}", res);
+        println!("{res}");
     }
 }

runtime/examples/log_callback.rs

@@ -25,6 +25,6 @@ fn main() {
     println!("Dumping logs");
 
     for line in LOGS.lock().unwrap().iter() {
-        print!("{}", line);
+        print!("{line}");
     }
 }

runtime/examples/readme.rs

@@ -52,6 +52,6 @@ fn main() {
         let res = plugin
             .call::<&str, &str>("count_vowels", "Hello, world!")
             .unwrap();
-        println!("{}", res);
+        println!("{res}");
     }
 }

runtime/src/current_plugin.rs

@@ -352,9 +352,9 @@ impl CurrentPlugin {
 
             if let Some(a) = &manifest.allowed_paths {
                 for (k, v) in a.iter() {
-                    let readonly = matches!(v, extism_manifest::LocalPath::ReadOnly(_));
+                    let readonly = k.starts_with("ro:");
 
-                    let dir_path = v.as_path();
+                    let dir_path = if readonly { &k[3..] } else { k };
 
                     let dir = wasi_common::sync::dir::Dir::from_cap_std(
                         wasi_common::sync::Dir::open_ambient_dir(dir_path, auth)?,
@@ -366,7 +366,7 @@ impl CurrentPlugin {
                         Box::new(dir)
                     };
 
-                    ctx.push_preopened_dir(file, k)?;
+                    ctx.push_preopened_dir(file, v)?;
                 }
             }
 

runtime/src/lib.rs

@@ -98,7 +98,7 @@ pub fn set_log_callback<F: 'static + Clone + Fn(&str)>(
         let x = tracing_subscriber::EnvFilter::builder()
             .with_default_directive(tracing::Level::ERROR.into());
         if is_level {
-            x.parse_lossy(format!("extism={}", filter))
+            x.parse_lossy(format!("extism={filter}"))
         } else {
             x.parse_lossy(filter)
         }

runtime/src/manifest.rs

@@ -10,7 +10,7 @@ use crate::*;
 fn hex(data: &[u8]) -> String {
     let mut s = String::new();
     for &byte in data {
-        write!(&mut s, "{:02x}", byte).unwrap();
+        write!(&mut s, "{byte:02x}").unwrap();
     }
     s
 }

runtime/src/pdk.rs

@@ -258,12 +258,16 @@ pub(crate) fn http_request(
             };
             let buf: &[u8] = data.memory_bytes(handle)?;
             let agent = ureq::agent();
-            let config = agent.configure_request(r.body(buf)?);
+            let config = agent
+                .configure_request(r.body(buf)?)
+                .http_status_as_error(false);
             let req = config.timeout_global(timeout).build();
             ureq::run(req)
         } else {
             let agent = ureq::agent();
-            let config = agent.configure_request(r.body(())?);
+            let config = agent
+                .configure_request(r.body(())?)
+                .http_status_as_error(false);
             let req = config.timeout_global(timeout).build();
             ureq::run(req)
         };

runtime/src/plugin.rs

@@ -963,8 +963,7 @@ impl Plugin {
                     }
                     Err(msg) => {
                         res = Err(Error::msg(format!(
-                            "unable to load error message from memory: {}",
-                            msg,
+                            "unable to load error message from memory: {msg}",
                         )));
                     }
                 }

runtime/src/pool.rs

@@ -1,4 +1,7 @@
 use crate::{Error, FromBytesOwned, Plugin, ToBytes};
+use std::collections::HashMap;
+use std::sync::Arc;
+use std::sync::RwLock;
 
 // `PoolBuilder` is used to configure and create `Pool`s
 #[derive(Debug, Clone)]
@@ -79,7 +82,8 @@ unsafe impl Sync for PoolInner {}
 #[derive(Clone)]
 pub struct Pool {
     config: PoolBuilder,
-    inner: std::sync::Arc<std::sync::Mutex<PoolInner>>,
+    inner: Arc<std::sync::Mutex<PoolInner>>,
+    existing_functions: Arc<RwLock<HashMap<String, bool>>>,
 }
 
 unsafe impl Send for Pool {}
@@ -88,13 +92,7 @@ unsafe impl Sync for Pool {}
 impl Pool {
     /// Create a new pool with the default configuration
     pub fn new<F: 'static + Fn() -> Result<Plugin, Error>>(source: F) -> Self {
-        Pool {
-            config: Default::default(),
-            inner: std::sync::Arc::new(std::sync::Mutex::new(PoolInner {
-                plugin_source: Box::new(source),
-                instances: Default::default(),
-            })),
-        }
+        Self::new_from_builder(Box::new(source), PoolBuilder::default())
     }
 
     /// Create a new pool configured using a `PoolBuilder`
@@ -104,10 +102,11 @@ impl Pool {
     ) -> Self {
         Pool {
             config: builder,
-            inner: std::sync::Arc::new(std::sync::Mutex::new(PoolInner {
+            inner: Arc::new(std::sync::Mutex::new(PoolInner {
                 plugin_source: Box::new(source),
                 instances: Default::default(),
             })),
+            existing_functions: RwLock::new(HashMap::default()).into(),
         }
     }
 
@@ -171,4 +170,26 @@ impl Pool {
         }
         Ok(None)
     }
+
+    /// Returns `true` if the given function exists, otherwise `false`. Results are cached
+    /// after the first call.
+    pub fn function_exists(&self, name: &str, timeout: std::time::Duration) -> Result<bool, Error> {
+        // read current value if any
+        let read = self.existing_functions.read().unwrap();
+        let exists_opt = read.get(name).cloned();
+        drop(read);
+        if let Some(exists) = exists_opt {
+            Ok(exists)
+        } else {
+            // load plugin and call function_exists
+            let plugin = self.get(timeout)?;
+            let exists = plugin.unwrap().0.borrow().function_exists(name);
+
+            // write result to hashmap
+            let mut write = self.existing_functions.write().unwrap();
+            write.insert(name.to_string(), exists);
+
+            Ok(exists)
+        }
+    }
 }

runtime/src/sdk.rs

@@ -871,7 +871,7 @@ fn set_log_file(log_file: impl Into<std::path::PathBuf>, filter: &str) -> Result
         let x = tracing_subscriber::EnvFilter::builder()
             .with_default_directive(tracing::Level::ERROR.into());
         if is_level {
-            x.parse_lossy(format!("extism={}", filter))
+            x.parse_lossy(format!("extism={filter}"))
         } else {
             x.parse_lossy(filter)
         }
@@ -926,7 +926,7 @@ unsafe fn set_log_buffer(filter: &str) -> Result<(), Error> {
         let x = tracing_subscriber::EnvFilter::builder()
             .with_default_directive(tracing::Level::ERROR.into());
         if is_level {
-            x.parse_lossy(format!("extism={}", filter))
+            x.parse_lossy(format!("extism={filter}"))
         } else {
             x.parse_lossy(filter)
         }

runtime/src/tests/issues.rs

@@ -16,7 +16,7 @@ fn test_issue_620() {
     // Call test method, this does not work
     let p = plugin.call::<(), String>("test", ()).unwrap();
 
-    println!("{}", p);
+    println!("{p}");
 }
 
 // https://github.com/extism/extism/issues/619
@@ -53,5 +53,5 @@ fn test_issue_775() {
         Ok(code) => Err(code),
     }
     .unwrap();
-    println!("{}", p);
+    println!("{p}");
 }

runtime/src/tests/pool.rs

@@ -1,29 +1,33 @@
 use crate::*;
+use std::time::Duration;
 
 fn run_thread(p: Pool, i: u64) -> std::thread::JoinHandle<()> {
     std::thread::spawn(move || {
-        std::thread::sleep(std::time::Duration::from_millis(i));
+        std::thread::sleep(Duration::from_millis(i));
         let s: String = p
-            .get(std::time::Duration::from_secs(1))
+            .get(Duration::from_secs(1))
             .unwrap()
             .unwrap()
             .call("count_vowels", "abc")
             .unwrap();
-        println!("{}", s);
+        println!("{s}");
     })
 }
 
+fn init(max_instances: usize) -> Pool {
+    let data = include_bytes!("../../../wasm/code.wasm");
+    let plugin_builder =
+        extism::PluginBuilder::new(extism::Manifest::new([extism::Wasm::data(data)]))
+            .with_wasi(true);
+    PoolBuilder::new()
+        .with_max_instances(max_instances)
+        .build(move || plugin_builder.clone().build())
+}
+
 #[test]
 fn test_threads() {
     for i in 1..=3 {
-        let data = include_bytes!("../../../wasm/code.wasm");
-        let plugin_builder =
-            extism::PluginBuilder::new(extism::Manifest::new([extism::Wasm::data(data)]))
-                .with_wasi(true);
-        let pool: Pool = PoolBuilder::new()
-            .with_max_instances(i)
-            .build(move || plugin_builder.clone().build());
-
+        let pool = init(i);
         let threads = vec![
             run_thread(pool.clone(), 1000),
             run_thread(pool.clone(), 1000),
@@ -46,3 +50,14 @@ fn test_threads() {
         assert!(pool.count() <= i);
     }
 }
+
+#[test]
+fn test_exists() -> Result<(), Error> {
+    let pool = init(1);
+    let timeout = Duration::from_secs(1);
+    assert!(pool.function_exists("count_vowels", timeout)?);
+    assert!(pool.function_exists("count_vowels", timeout)?);
+    assert!(!pool.function_exists("not_existing", timeout)?);
+    assert!(!pool.function_exists("not_existing", timeout)?);
+    Ok(())
+}

runtime/src/tests/runtime.rs

@@ -133,10 +133,7 @@ fn it_works() {
         .unwrap();
     let native_avg: std::time::Duration = native_sum / native_num_tests as u32;
 
-    println!(
-        "native function call (avg, N = {}): {:?}",
-        native_num_tests, native_avg
-    );
+    println!("native function call (avg, N = {native_num_tests}): {native_avg:?}");
 
     let num_tests = test_times.len();
     let sum: std::time::Duration = test_times
@@ -145,7 +142,7 @@ fn it_works() {
         .unwrap();
     let avg: std::time::Duration = sum / num_tests as u32;
 
-    println!("wasm function call (avg, N = {}): {:?}", num_tests, avg);
+    println!("wasm function call (avg, N = {num_tests}): {avg:?}");
 
     // Check that log file was written to
     if log {
@@ -212,7 +209,7 @@ fn test_cancel() {
         let _output: Result<&[u8], Error> = plugin.call("loop_forever", "abc123");
         let end = std::time::Instant::now();
         let time = end - start;
-        println!("Cancelled plugin ran for {:?}", time);
+        println!("Cancelled plugin ran for {time:?}");
     }
 }
 
@@ -271,7 +268,7 @@ fn test_fuel_consumption() {
     assert!(output.is_err());
 
     let fuel_consumed = plugin.fuel_consumed().unwrap();
-    println!("Fuel consumed: {}", fuel_consumed);
+    println!("Fuel consumed: {fuel_consumed}");
     assert!(fuel_consumed > 0);
 }
 
@@ -440,7 +437,7 @@ fn test_memory_max() {
     assert!(output.is_err());
 
     let err = output.unwrap_err().root_cause().to_string();
-    println!("{:?}", err);
+    println!("{err:?}");
     assert_eq!(err, "oom");
 
     // Should pass with memory.max set to a large enough number
@@ -503,7 +500,7 @@ fn test_extism_error() {
     let mut plugin = Plugin::new(&manifest, [f], true).unwrap();
     let output: Result<String, Error> = plugin.call("count_vowels", "a".repeat(1024));
     assert!(output.is_err());
-    println!("{:?}", output);
+    println!("{output:?}");
     assert_eq!(output.unwrap_err().root_cause().to_string(), "TEST");
 }
 
@@ -823,7 +820,7 @@ fn test_http_response_headers() {
     .unwrap();
     let req = HttpRequest::new("https://extism.org");
     let Json(res): Json<HashMap<String, String>> = plugin.call("http_get", Json(req)).unwrap();
-    println!("{:?}", res);
+    println!("{res:?}");
     assert_eq!(res["content-type"], "text/html; charset=utf-8");
 }
 
@@ -838,6 +835,6 @@ fn test_http_response_headers_disabled() {
     .unwrap();
     let req = HttpRequest::new("https://extism.org");
     let Json(res): Json<HashMap<String, String>> = plugin.call("http_get", Json(req)).unwrap();
-    println!("{:?}", res);
+    println!("{res:?}");
     assert!(res.is_empty());
 }