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denoland-deno/runtime/examples/hello_runtime.rs
Bartek Iwańczuk f840906943
fix(core): prevent multiple main module loading (#12128)
This commit fixes a problem where loading and executing multiple 
modules leads to all of the having "import.meta.main" set to true.

Following Rust APIs were deprecated:
- deno_core::JsRuntime::load_module
- deno_runtime::Worker::execute_module
- deno_runtime::WebWorker::execute_module

Following Rust APIs were added:
- deno_core::JsRuntime::load_main_module
- deno_core::JsRuntime::load_side_module
- deno_runtime::Worker::execute_main_module
- deno_runtime::Worker::execute_side_module
- deno_runtime::WebWorker::execute_main_module

Trying to load multiple "main" modules into the runtime now results in an
error. If user needs to load additional "non-main" modules they should use
APIs for "side" module.
2021-09-18 03:44:53 +02:00

63 lines
2 KiB
Rust

// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
use deno_core::error::AnyError;
use deno_core::FsModuleLoader;
use deno_runtime::deno_broadcast_channel::InMemoryBroadcastChannel;
use deno_runtime::deno_web::BlobStore;
use deno_runtime::permissions::Permissions;
use deno_runtime::worker::MainWorker;
use deno_runtime::worker::WorkerOptions;
use std::path::Path;
use std::rc::Rc;
use std::sync::Arc;
fn get_error_class_name(e: &AnyError) -> &'static str {
deno_runtime::errors::get_error_class_name(e).unwrap_or("Error")
}
#[tokio::main]
async fn main() -> Result<(), AnyError> {
let module_loader = Rc::new(FsModuleLoader);
let create_web_worker_cb = Arc::new(|_| {
todo!("Web workers are not supported in the example");
});
let options = WorkerOptions {
apply_source_maps: false,
args: vec![],
debug_flag: false,
unstable: false,
enable_testing_features: false,
unsafely_ignore_certificate_errors: None,
root_cert_store: None,
user_agent: "hello_runtime".to_string(),
seed: None,
js_error_create_fn: None,
create_web_worker_cb,
maybe_inspector_server: None,
should_break_on_first_statement: false,
module_loader,
runtime_version: "x".to_string(),
ts_version: "x".to_string(),
no_color: false,
get_error_class_fn: Some(&get_error_class_name),
location: None,
origin_storage_dir: None,
blob_store: BlobStore::default(),
broadcast_channel: InMemoryBroadcastChannel::default(),
shared_array_buffer_store: None,
cpu_count: 1,
};
let js_path =
Path::new(env!("CARGO_MANIFEST_DIR")).join("examples/hello_runtime.js");
let main_module = deno_core::resolve_path(&js_path.to_string_lossy())?;
let permissions = Permissions::allow_all();
let mut worker =
MainWorker::from_options(main_module.clone(), permissions, &options);
worker.bootstrap(&options);
worker.execute_main_module(&main_module).await?;
worker.run_event_loop(false).await?;
Ok(())
}