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use super::handle_connection;
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use crate::error::Result;
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use crate::events::event_handler::EventHandler;
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use crate::ipc::context::Context;
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use crate::ipc::stream_emitter::StreamEmitter;
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use crate::namespaces::namespace::Namespace;
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use std::collections::HashMap;
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use std::sync::Arc;
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use tokio::net::TcpStream;
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use tokio::sync::oneshot;
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use tokio::sync::RwLock;
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use typemap_rev::TypeMap;
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/// The IPC Client to connect to an IPC Server.
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/// Use the [IPCBuilder](crate::builder::IPCBuilder) to create the client.
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/// Usually one does not need to use the IPCClient object directly.
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pub struct IPCClient {
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pub(crate) handler: EventHandler,
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pub(crate) namespaces: HashMap<String, Namespace>,
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pub(crate) data: TypeMap,
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}
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impl IPCClient {
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/// Connects to a given address and returns an emitter for events to that address.
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/// Invoked by [IPCBuilder::build_client](crate::builder::IPCBuilder::build_client)
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#[tracing::instrument(skip(self))]
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pub async fn connect(self, address: &str) -> Result<Context> {
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let stream = TcpStream::connect(address).await?;
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let (read_half, write_half) = stream.into_split();
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let emitter = StreamEmitter::new(write_half);
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let (tx, rx) = oneshot::channel();
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let ctx = Context::new(
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StreamEmitter::clone(&emitter),
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Arc::new(RwLock::new(self.data)),
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Some(tx),
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);
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let handler = Arc::new(self.handler);
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let namespaces = Arc::new(self.namespaces);
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let handle = tokio::spawn({
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let ctx = Context::clone(&ctx);
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async move {
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handle_connection(namespaces, handler, read_half, ctx).await;
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}
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});
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tokio::spawn(async move {
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let _ = rx.await;
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handle.abort();
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});
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Ok(ctx)
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}
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}
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