2022-02-07 02:18:42 +00:00
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use crate::dart_isolate_wrapper::*;
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use allo_isolate::*;
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use async_std::sync::Mutex as AsyncMutex;
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use ffi_support::*;
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use lazy_static::*;
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use std::os::raw::c_char;
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use std::sync::Arc;
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2022-06-08 01:31:05 +00:00
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use tracing::*;
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2022-02-07 02:18:42 +00:00
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// Globals
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lazy_static! {
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static ref VEILID_API: AsyncMutex<Option<veilid_core::VeilidAPI>> = AsyncMutex::new(None);
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}
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async fn get_veilid_api() -> Result<veilid_core::VeilidAPI, veilid_core::VeilidAPIError> {
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let api_lock = VEILID_API.lock().await;
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api_lock
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.as_ref()
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.cloned()
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.ok_or(veilid_core::VeilidAPIError::NotInitialized)
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}
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async fn take_veilid_api() -> Result<veilid_core::VeilidAPI, veilid_core::VeilidAPIError> {
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let mut api_lock = VEILID_API.lock().await;
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api_lock
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.take()
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.ok_or(veilid_core::VeilidAPIError::NotInitialized)
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}
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/////////////////////////////////////////
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// FFI Helpers
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// Declare external routine to release ffi strings
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define_string_destructor!(free_string);
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// Utility types for async API results
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type APIResult<T> = Result<T, veilid_core::VeilidAPIError>;
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const APIRESULT_VOID: APIResult<()> = APIResult::Ok(());
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// Stream abort macro for simplified error handling
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macro_rules! check_err_json {
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($stream:expr, $ex:expr) => {
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match $ex {
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Ok(v) => v,
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Err(e) => {
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$stream.abort_json(e);
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return;
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}
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}
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};
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}
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/////////////////////////////////////////
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// Initializer
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#[no_mangle]
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pub extern "C" fn initialize_veilid_flutter(dart_post_c_object_ptr: ffi::DartPostCObjectFnType) {
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unsafe {
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store_dart_post_cobject(dart_post_c_object_ptr);
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}
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use std::sync::Once;
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static INIT_BACKTRACE: Once = Once::new();
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INIT_BACKTRACE.call_once(move || {
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std::env::set_var("RUST_BACKTRACE", "1");
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std::panic::set_hook(Box::new(move |panic_info| {
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let (file, line) = if let Some(loc) = panic_info.location() {
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(loc.file(), loc.line())
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} else {
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("<unknown>", 0)
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};
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2022-06-08 01:31:05 +00:00
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error!("### Rust `panic!` hit at file '{}', line {}", file, line);
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2022-02-07 02:18:42 +00:00
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if let Some(s) = panic_info.payload().downcast_ref::<&str>() {
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error!("panic payload: {:?}", s);
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} else if let Some(s) = panic_info.payload().downcast_ref::<String>() {
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error!("panic payload: {:?}", s);
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} else if let Some(a) = panic_info.payload().downcast_ref::<std::fmt::Arguments>() {
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error!("panic payload: {:?}", a);
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} else {
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error!("no panic payload");
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}
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2022-06-08 01:31:05 +00:00
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error!(" Complete stack trace:\n{:?}", backtrace::Backtrace::new());
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2022-02-07 02:18:42 +00:00
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// And stop the process, no recovery is going to be possible here
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std::process::abort();
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}));
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});
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}
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//////////////////////////////////////////////////////////////////////////////////
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/// C-compatible FFI Functions
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#[no_mangle]
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pub extern "C" fn startup_veilid_core(port: i64, config: FfiStr) {
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let config = config.into_opt_string();
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let stream = DartIsolateStream::new(port);
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async_std::task::spawn(async move {
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2022-02-09 15:00:19 +00:00
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let config_json = match config {
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Some(v) => v,
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None => {
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stream.abort_json(veilid_core::VeilidAPIError::MissingArgument {
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context: "startup_veilid_core".to_owned(),
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argument: "config".to_owned(),
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});
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return;
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}
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};
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2022-02-07 02:18:42 +00:00
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let mut api_lock = VEILID_API.lock().await;
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if api_lock.is_some() {
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stream.abort_json(veilid_core::VeilidAPIError::AlreadyInitialized);
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return;
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}
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let sink = stream.clone();
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2022-03-11 12:35:41 +00:00
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let update_callback = Arc::new(move |update: veilid_core::VeilidUpdate| {
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let sink = sink.clone();
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match update {
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veilid_core::VeilidUpdate::Shutdown => {
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sink.close();
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}
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_ => {
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sink.item_json(update);
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}
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}
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});
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2022-02-09 15:00:19 +00:00
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let res = veilid_core::api_startup_json(update_callback, config_json).await;
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2022-02-07 02:18:42 +00:00
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let veilid_api = check_err_json!(stream, res);
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*api_lock = Some(veilid_api);
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});
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}
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#[no_mangle]
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pub extern "C" fn get_veilid_state(port: i64) {
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DartIsolateWrapper::new(port).spawn_result_json(async move {
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let veilid_api = get_veilid_api().await?;
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let core_state = veilid_api.get_state().await?;
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APIResult::Ok(core_state)
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});
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}
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#[no_mangle]
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2022-06-08 01:31:05 +00:00
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pub extern "C" fn change_api_log_level(port: i64, log_level: FfiStr) {
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2022-02-07 02:18:42 +00:00
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let log_level = log_level.into_opt_string();
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DartIsolateWrapper::new(port).spawn_result_json(async move {
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2022-06-08 01:31:05 +00:00
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let log_level: veilid_core::VeilidConfigLogLevel =
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veilid_core::deserialize_opt_json(log_level)?;
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2022-02-07 02:18:42 +00:00
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let veilid_api = get_veilid_api().await?;
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2022-06-08 01:31:05 +00:00
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veilid_api.change_api_log_level(log_level).await;
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2022-02-07 02:18:42 +00:00
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APIRESULT_VOID
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});
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}
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#[no_mangle]
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pub extern "C" fn shutdown_veilid_core(port: i64) {
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DartIsolateWrapper::new(port).spawn_result_json(async move {
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let veilid_api = take_veilid_api().await?;
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veilid_api.shutdown().await;
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APIRESULT_VOID
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});
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}
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2022-02-15 18:40:17 +00:00
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#[no_mangle]
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pub extern "C" fn debug(port: i64, command: FfiStr) {
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let command = command.into_opt_string().unwrap_or_default();
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DartIsolateWrapper::new(port).spawn_result(async move {
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let veilid_api = get_veilid_api().await?;
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let out = veilid_api.debug(command).await?;
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APIResult::Ok(out)
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});
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}
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2022-02-07 02:18:42 +00:00
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#[no_mangle]
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pub extern "C" fn veilid_version_string() -> *mut c_char {
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veilid_core::veilid_version_string().into_ffi_value()
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}
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#[repr(C)]
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pub struct VeilidVersion {
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pub major: u32,
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pub minor: u32,
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pub patch: u32,
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}
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#[no_mangle]
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pub extern "C" fn veilid_version() -> VeilidVersion {
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let (major, minor, patch) = veilid_core::veilid_version();
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VeilidVersion {
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major,
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minor,
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patch,
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}
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}
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