This wrapper caches the result of `plugin.function_exists`, to avoid
having to load a plugin from the pool every single time just to find out
if the given function exists. It can improve performance if there are
many plugin hooks without corresponding plugin functions.
---------
Co-authored-by: zach <zach@dylibso.com>
This is a rough POC for allowing people to whitelist a dir as readonly.
When the source path is prefixed with `ro:`, the dir is considered as
readonly. This preserved backward compatibility. This suggestion came up
in https://github.com/extism/go-sdk/pull/1#discussion_r1276700587
Readonly:
```rs
let manifest = Manifest::new([url])
.with_allowed_path("ro:D:/x/rust/fs/data".to_string(), "/data")
.with_config_key("path", "/data/data.txt");
```
```
trying to read file:
"Hello World at 1719851282.5109031sHello World at 1719851299.0819795sHello World at 1719851317.8934608s\n"
-----------------------------------------------------
trying to write file:
thread '<unnamed>' panicked at src\lib.rs:24:34:
called `Result::unwrap()` on an `Err` value: Os { code: 58, kind: Unsupported, message: "Not supported" }
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
thread 'main' panicked at runtime\examples\fs.rs:27:6:
called `Result::unwrap()` on an `Err` value: error while executing at wasm backtrace:
0: 0x234d2 - fs.wasm!__rust_start_panic
1: 0x232a1 - fs.wasm!rust_panic
2: 0x231da - fs.wasm!std::panicking::rust_panic_with_hook::hd3fb69bc0aea298a
3: 0x22467 - fs.wasm!std::panicking::begin_panic_handler::{{closure}}::h4d99b90b43f79472
4: 0x223ca - fs.wasm!std::sys_common::backtrace::__rust_end_short_backtrace::h5691573a73161cb1
5: 0x22bca - fs.wasm!rust_begin_unwind
6: 0x303e9 - fs.wasm!core::panicking::panic_fmt::hdb62f5cdb45533e4
7: 0x3234d - fs.wasm!core::result::unwrap_failed::h30d23efcc9e41efc
8: 0x36c2 - fs.wasm!fs::try_write::inner::h0b3b0df8e129f5cc
9: 0x29cd - fs.wasm!try_write
10: 0x35e4a - fs.wasm!try_write.command_export
note: using the `WASMTIME_BACKTRACE_DETAILS=1` environment variable may show more debugging information
Caused by:
wasm trap: wasm `unreachable` instruction executed
Stack backtrace:
0: std::backtrace_rs::backtrace::dbghelp64::trace
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library\std\src\..\..\backtrace\src\backtrace\dbghelp64.rs:99
1: std::backtrace_rs::backtrace::trace_unsynchronized
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library\std\src\..\..\backtrace\src\backtrace\mod.rs:66
2: std::backtrace::Backtrace::create
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library\std\src\backtrace.rs:331
3: std::backtrace::Backtrace::capture
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library\std\src\backtrace.rs:296
4: anyhow::error::impl$1::from<wasmtime_environ::trap_encoding::Trap>
at C:\Users\muham\.cargo\registry\src\index.crates.io-6f17d22bba15001f\anyhow-1.0.86\src\error.rs:565
5: core::convert::impl$3::into<wasmtime_environ::trap_encoding::Trap,anyhow::Error>
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6\library\core\src\convert\mod.rs:759
6: wasmtime_environ::impl$1::into_anyhow<wasmtime_environ::trap_encoding::Trap>
at C:\Users\muham\.cargo\registry\src\index.crates.io-6f17d22bba15001f\wasmtime-environ-22.0.0\src\lib.rs:90
7: wasmtime::runtime::trap::from_runtime_box
at C:\Users\muham\.cargo\registry\src\index.crates.io-6f17d22bba15001f\wasmtime-22.0.0\src\runtime\trap.rs:118
8: wasmtime::runtime::func::invoke_wasm_and_catch_traps::closure$0<extism::current_plugin::CurrentPlugin,wasmtime::runtime::func::impl$1::call_unchecked_raw::closure_env$0<extism::current_plugin::CurrentPlugin> >
at C:\Users\muham\.cargo\registry\src\index.crates.io-6f17d22bba15001f\wasmtime-22.0.0\src\runtime\func.rs:1597
9: enum2$<core::result::Result<tuple$<>,alloc::boxed::Box<wasmtime::runtime::vm::traphandlers::Trap,alloc::alloc::Global> > >::map_err<tuple$<>,alloc::boxed::Box<wasmtime::runtime::vm::traphandlers::Trap,alloc::alloc::Global>,anyhow::Error,wasmtime::runtime:
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6\library\core\src\result.rs:829
10: wasmtime::runtime::func::invoke_wasm_and_catch_traps<extism::current_plugin::CurrentPlugin,wasmtime::runtime::func::impl$1::call_unchecked_raw::closure_env$0<extism::current_plugin::CurrentPlugin> >
at C:\Users\muham\.cargo\registry\src\index.crates.io-6f17d22bba15001f\wasmtime-22.0.0\src\runtime\func.rs:1597
11: wasmtime::runtime::func::Func::call_unchecked_raw<extism::current_plugin::CurrentPlugin>
at C:\Users\muham\.cargo\registry\src\index.crates.io-6f17d22bba15001f\wasmtime-22.0.0\src\runtime\func.rs:1063
12: wasmtime::runtime::func::Func::call_unchecked<ref_mut$<wasmtime::runtime::store::context::StoreContextMut<extism::current_plugin::CurrentPlugin> > >
at C:\Users\muham\.cargo\registry\src\index.crates.io-6f17d22bba15001f\wasmtime-22.0.0\src\runtime\func.rs:1049
13: wasmtime::runtime::func::Func::call_impl_do_call<extism::current_plugin::CurrentPlugin>
at C:\Users\muham\.cargo\registry\src\index.crates.io-6f17d22bba15001f\wasmtime-22.0.0\src\runtime\func.rs:1243
14: wasmtime::runtime::func::Func::call<ref_mut$<wasmtime::runtime::store::Store<extism::current_plugin::CurrentPlugin> > >
at C:\Users\muham\.cargo\registry\src\index.crates.io-6f17d22bba15001f\wasmtime-22.0.0\src\runtime\func.rs:1002
15: extism::plugin::Plugin::raw_call<ref$<str$>,ref$<str$> >
at .\src\plugin.rs:753
16: extism::plugin::Plugin::call<ref$<str$>,ref$<str$>,ref$<str$> >
at .\src\plugin.rs:900
17: fs::main
at .\examples\fs.rs:25
18: core::ops::function::FnOnce::call_once<void (*)(),tuple$<> >
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6\library\core\src\ops\function.rs:250
19: core::hint::black_box
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6\library\core\src\hint.rs:337
20: std::sys_common::backtrace::__rust_begin_short_backtrace<void (*)(),tuple$<> >
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6\library\std\src\sys_common\backtrace.rs:155
21: std::rt::lang_start::closure$0<tuple$<> >
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6\library\std\src\rt.rs:166
22: std::rt::lang_start_internal
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library\std\src\rt.rs:148
23: std::rt::lang_start<tuple$<> >
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6\library\std\src\rt.rs:165
24: main
25: invoke_main
at D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:78
26: __scrt_common_main_seh
at D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288
27: BaseThreadInitThunk
28: RtlUserThreadStart
stack backtrace:
0: std::panicking::begin_panic_handler
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library\std\src\panicking.rs:645
1: core::panicking::panic_fmt
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library\core\src\panicking.rs:72
2: core::result::unwrap_failed
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library\core\src\result.rs:1654
3: enum2$<core::result::Result<ref$<str$>,anyhow::Error> >::unwrap
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6\library\core\src\result.rs:1077
4: fs::main
at .\examples\fs.rs:25
5: core::ops::function::FnOnce::call_once<void (*)(),tuple$<> >
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6\library\core\src\ops\function.rs:250
6: core::hint::black_box
at /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6\library\core\src\hint.rs:337
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
error: process didn't exit successfully: `D:\dylibso\extism\target\debug\examples\fs.exe` (exit code: 101)
```
Writable:
```rs
let manifest = Manifest::new([url])
.with_allowed_path("D:/x/rust/fs/data".to_string(), "/data")
.with_config_key("path", "/data/data.txt");
```
```
trying to read file:
"Hello World at 1719851282.5109031sHello World at 1719851299.0819795sHello World at 1719851317.8934608s\n"
-----------------------------------------------------
trying to write file:
"Hello World at 1719851282.5109031sHello World at 1719851299.0819795sHello World at 1719851317.8934608s\nHello World at 1719851500.7803263s\n"
done!
```
Add an example of dynamically linking plugins and a benchmark that does
an apples-to-apples comparison of `reflect` using host functions vs.
`reflect` using a linked wasm module. (To my surprise, the host
functions are a _little bit faster_!)
- Uses `tracing` instead of `log` crate
- Uses `tracing-subscriber` instead of `fern`
- This allows us to automatically capture `log` events using
`tracing-subscriber`
- Breaking: Makes `extism::set_log_file` private and only used through
the C API, Rust users should use `tracing-subscriber` to determine which
filters/levels to log.
- Adds `extism::set_log_callback` function to set a callback that can be
used for custom logging from Rust.
- Adds `bool extism_log_custom(const char *level)` and
`extism_log_drain(void (*fn)(const char *s, size_t length)` to the C API
to enable custom sinks in other SDKs
Fixes#545
- Adds a type parameter to `UserData` type to avoid dynamic typing
issues
- Adds KV example from README to `examples/readme.rs` to make sure it
stays in-sync
- Implement `Default` for `UserData<T>` when `T` implements `Default`
- Make `UserData` argument non-optional in `Function::new`,
`UserData::default()` can be used instead.
