fidl_examples_keyvaluestore_usegenericvalues/

fidl_examples_keyvaluestore_usegenericvalues.rs

// WARNING: This file is machine generated by fidlgen.

#![warn(clippy::all)]
#![allow(unused_parens, unused_mut, unused_imports, nonstandard_style)]

use bitflags::bitflags;
use fidl::client::QueryResponseFut;
use fidl::encoding::{MessageBufFor, ProxyChannelBox, ResourceDialect};
use fidl::endpoints::{ControlHandle as _, Responder as _};
pub use fidl_examples_keyvaluestore_usegenericvalues_common::*;
use futures::future::{self, MaybeDone, TryFutureExt};
use zx_status;

#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub struct StoreMarker;

impl fidl::endpoints::ProtocolMarker for StoreMarker {
    type Proxy = StoreProxy;
    type RequestStream = StoreRequestStream;
    #[cfg(target_os = "fuchsia")]
    type SynchronousProxy = StoreSynchronousProxy;

    const DEBUG_NAME: &'static str = "examples.keyvaluestore.usegenericvalues.Store";
}
impl fidl::endpoints::DiscoverableProtocolMarker for StoreMarker {}
pub type StoreWriteItemResult = Result<Value, WriteError>;

pub trait StoreProxyInterface: Send + Sync {
    type WriteItemResponseFut: std::future::Future<Output = Result<StoreWriteItemResult, fidl::Error>>
        + Send;
    fn r#write_item(&self, payload: &StoreWriteItemRequest) -> Self::WriteItemResponseFut;
}
#[derive(Debug)]
#[cfg(target_os = "fuchsia")]
pub struct StoreSynchronousProxy {
    client: fidl::client::sync::Client,
}

#[cfg(target_os = "fuchsia")]
impl fidl::endpoints::SynchronousProxy for StoreSynchronousProxy {
    type Proxy = StoreProxy;
    type Protocol = StoreMarker;

    fn from_channel(inner: fidl::Channel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    fn as_channel(&self) -> &fidl::Channel {
        self.client.as_channel()
    }
}

#[cfg(target_os = "fuchsia")]
impl StoreSynchronousProxy {
    pub fn new(channel: fidl::Channel) -> Self {
        let protocol_name = <StoreMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::sync::Client::new(channel, protocol_name) }
    }

    pub fn into_channel(self) -> fidl::Channel {
        self.client.into_channel()
    }

    /// Waits until an event arrives and returns it. It is safe for other
    /// threads to make concurrent requests while waiting for an event.
    pub fn wait_for_event(
        &self,
        deadline: zx::MonotonicInstant,
    ) -> Result<StoreEvent, fidl::Error> {
        StoreEvent::decode(self.client.wait_for_event(deadline)?)
    }

    /// Writes an item to the store.
    ///
    /// Since the value stored in the key-value store can now be different from the input (if the
    /// `WriteOptions.CONCAT` flag is set), we need to return the resulting `Value` to the
    /// requester.
    ///
    /// We use an (anonymous) `table` and a (named) `flexible union` as the request and response
    /// payload, respectively, to allow for easier future evolution. Both of these types are
    /// `flexible`, meaning that adding or removing members is binary-compatible. This makes them
    /// much easier to evolve that the `struct` types that were previously used, which cannot be
    /// changed after release without breaking ABI.
    pub fn r#write_item(
        &self,
        mut payload: &StoreWriteItemRequest,
        ___deadline: zx::MonotonicInstant,
    ) -> Result<StoreWriteItemResult, fidl::Error> {
        let _response = self.client.send_query::<
            StoreWriteItemRequest,
            fidl::encoding::FlexibleResultType<Value, WriteError>,
        >(
            payload,
            0xdbd4bf1e49abe6e,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            ___deadline,
        )?
        .into_result::<StoreMarker>("write_item")?;
        Ok(_response.map(|x| x))
    }
}

#[derive(Debug, Clone)]
pub struct StoreProxy {
    client: fidl::client::Client<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl fidl::endpoints::Proxy for StoreProxy {
    type Protocol = StoreMarker;

    fn from_channel(inner: ::fidl::AsyncChannel) -> Self {
        Self::new(inner)
    }

    fn into_channel(self) -> Result<::fidl::AsyncChannel, Self> {
        self.client.into_channel().map_err(|client| Self { client })
    }

    fn as_channel(&self) -> &::fidl::AsyncChannel {
        self.client.as_channel()
    }
}

impl StoreProxy {
    /// Create a new Proxy for examples.keyvaluestore.usegenericvalues/Store.
    pub fn new(channel: ::fidl::AsyncChannel) -> Self {
        let protocol_name = <StoreMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME;
        Self { client: fidl::client::Client::new(channel, protocol_name) }
    }

    /// Get a Stream of events from the remote end of the protocol.
    ///
    /// # Panics
    ///
    /// Panics if the event stream was already taken.
    pub fn take_event_stream(&self) -> StoreEventStream {
        StoreEventStream { event_receiver: self.client.take_event_receiver() }
    }

    /// Writes an item to the store.
    ///
    /// Since the value stored in the key-value store can now be different from the input (if the
    /// `WriteOptions.CONCAT` flag is set), we need to return the resulting `Value` to the
    /// requester.
    ///
    /// We use an (anonymous) `table` and a (named) `flexible union` as the request and response
    /// payload, respectively, to allow for easier future evolution. Both of these types are
    /// `flexible`, meaning that adding or removing members is binary-compatible. This makes them
    /// much easier to evolve that the `struct` types that were previously used, which cannot be
    /// changed after release without breaking ABI.
    pub fn r#write_item(
        &self,
        mut payload: &StoreWriteItemRequest,
    ) -> fidl::client::QueryResponseFut<
        StoreWriteItemResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    > {
        StoreProxyInterface::r#write_item(self, payload)
    }
}

impl StoreProxyInterface for StoreProxy {
    type WriteItemResponseFut = fidl::client::QueryResponseFut<
        StoreWriteItemResult,
        fidl::encoding::DefaultFuchsiaResourceDialect,
    >;
    fn r#write_item(&self, mut payload: &StoreWriteItemRequest) -> Self::WriteItemResponseFut {
        fn _decode(
            mut _buf: Result<<fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc, fidl::Error>,
        ) -> Result<StoreWriteItemResult, fidl::Error> {
            let _response = fidl::client::decode_transaction_body::<
                fidl::encoding::FlexibleResultType<Value, WriteError>,
                fidl::encoding::DefaultFuchsiaResourceDialect,
                0xdbd4bf1e49abe6e,
            >(_buf?)?
            .into_result::<StoreMarker>("write_item")?;
            Ok(_response.map(|x| x))
        }
        self.client.send_query_and_decode::<StoreWriteItemRequest, StoreWriteItemResult>(
            payload,
            0xdbd4bf1e49abe6e,
            fidl::encoding::DynamicFlags::FLEXIBLE,
            _decode,
        )
    }
}

pub struct StoreEventStream {
    event_receiver: fidl::client::EventReceiver<fidl::encoding::DefaultFuchsiaResourceDialect>,
}

impl std::marker::Unpin for StoreEventStream {}

impl futures::stream::FusedStream for StoreEventStream {
    fn is_terminated(&self) -> bool {
        self.event_receiver.is_terminated()
    }
}

impl futures::Stream for StoreEventStream {
    type Item = Result<StoreEvent, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        match futures::ready!(futures::stream::StreamExt::poll_next_unpin(
            &mut self.event_receiver,
            cx
        )?) {
            Some(buf) => std::task::Poll::Ready(Some(StoreEvent::decode(buf))),
            None => std::task::Poll::Ready(None),
        }
    }
}

#[derive(Debug)]
pub enum StoreEvent {
    #[non_exhaustive]
    _UnknownEvent {
        /// Ordinal of the event that was sent.
        ordinal: u64,
    },
}

impl StoreEvent {
    /// Decodes a message buffer as a [`StoreEvent`].
    fn decode(
        mut buf: <fidl::encoding::DefaultFuchsiaResourceDialect as fidl::encoding::ResourceDialect>::MessageBufEtc,
    ) -> Result<StoreEvent, fidl::Error> {
        let (bytes, _handles) = buf.split_mut();
        let (tx_header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;
        debug_assert_eq!(tx_header.tx_id, 0);
        match tx_header.ordinal {
            _ if tx_header.dynamic_flags().contains(fidl::encoding::DynamicFlags::FLEXIBLE) => {
                Ok(StoreEvent::_UnknownEvent { ordinal: tx_header.ordinal })
            }
            _ => Err(fidl::Error::UnknownOrdinal {
                ordinal: tx_header.ordinal,
                protocol_name: <StoreMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
            }),
        }
    }
}

/// A Stream of incoming requests for examples.keyvaluestore.usegenericvalues/Store.
pub struct StoreRequestStream {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
    is_terminated: bool,
}

impl std::marker::Unpin for StoreRequestStream {}

impl futures::stream::FusedStream for StoreRequestStream {
    fn is_terminated(&self) -> bool {
        self.is_terminated
    }
}

impl fidl::endpoints::RequestStream for StoreRequestStream {
    type Protocol = StoreMarker;
    type ControlHandle = StoreControlHandle;

    fn from_channel(channel: ::fidl::AsyncChannel) -> Self {
        Self { inner: std::sync::Arc::new(fidl::ServeInner::new(channel)), is_terminated: false }
    }

    fn control_handle(&self) -> Self::ControlHandle {
        StoreControlHandle { inner: self.inner.clone() }
    }

    fn into_inner(
        self,
    ) -> (::std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>, bool)
    {
        (self.inner, self.is_terminated)
    }

    fn from_inner(
        inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
        is_terminated: bool,
    ) -> Self {
        Self { inner, is_terminated }
    }
}

impl futures::Stream for StoreRequestStream {
    type Item = Result<StoreRequest, fidl::Error>;

    fn poll_next(
        mut self: std::pin::Pin<&mut Self>,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Option<Self::Item>> {
        let this = &mut *self;
        if this.inner.check_shutdown(cx) {
            this.is_terminated = true;
            return std::task::Poll::Ready(None);
        }
        if this.is_terminated {
            panic!("polled StoreRequestStream after completion");
        }
        fidl::encoding::with_tls_decode_buf::<_, fidl::encoding::DefaultFuchsiaResourceDialect>(
            |bytes, handles| {
                match this.inner.channel().read_etc(cx, bytes, handles) {
                    std::task::Poll::Ready(Ok(())) => {}
                    std::task::Poll::Pending => return std::task::Poll::Pending,
                    std::task::Poll::Ready(Err(zx_status::Status::PEER_CLOSED)) => {
                        this.is_terminated = true;
                        return std::task::Poll::Ready(None);
                    }
                    std::task::Poll::Ready(Err(e)) => {
                        return std::task::Poll::Ready(Some(Err(fidl::Error::ServerRequestRead(
                            e.into(),
                        ))))
                    }
                }

                // A message has been received from the channel
                let (header, _body_bytes) = fidl::encoding::decode_transaction_header(bytes)?;

                std::task::Poll::Ready(Some(match header.ordinal {
                    0xdbd4bf1e49abe6e => {
                        header.validate_request_tx_id(fidl::MethodType::TwoWay)?;
                        let mut req = fidl::new_empty!(
                            StoreWriteItemRequest,
                            fidl::encoding::DefaultFuchsiaResourceDialect
                        );
                        fidl::encoding::Decoder::<fidl::encoding::DefaultFuchsiaResourceDialect>::decode_into::<StoreWriteItemRequest>(&header, _body_bytes, handles, &mut req)?;
                        let control_handle = StoreControlHandle { inner: this.inner.clone() };
                        Ok(StoreRequest::WriteItem {
                            payload: req,
                            responder: StoreWriteItemResponder {
                                control_handle: std::mem::ManuallyDrop::new(control_handle),
                                tx_id: header.tx_id,
                            },
                        })
                    }
                    _ if header.tx_id == 0
                        && header
                            .dynamic_flags()
                            .contains(fidl::encoding::DynamicFlags::FLEXIBLE) =>
                    {
                        Ok(StoreRequest::_UnknownMethod {
                            ordinal: header.ordinal,
                            control_handle: StoreControlHandle { inner: this.inner.clone() },
                            method_type: fidl::MethodType::OneWay,
                        })
                    }
                    _ if header
                        .dynamic_flags()
                        .contains(fidl::encoding::DynamicFlags::FLEXIBLE) =>
                    {
                        this.inner.send_framework_err(
                            fidl::encoding::FrameworkErr::UnknownMethod,
                            header.tx_id,
                            header.ordinal,
                            header.dynamic_flags(),
                            (bytes, handles),
                        )?;
                        Ok(StoreRequest::_UnknownMethod {
                            ordinal: header.ordinal,
                            control_handle: StoreControlHandle { inner: this.inner.clone() },
                            method_type: fidl::MethodType::TwoWay,
                        })
                    }
                    _ => Err(fidl::Error::UnknownOrdinal {
                        ordinal: header.ordinal,
                        protocol_name: <StoreMarker as fidl::endpoints::ProtocolMarker>::DEBUG_NAME,
                    }),
                }))
            },
        )
    }
}

/// A very basic key-value store.
#[derive(Debug)]
pub enum StoreRequest {
    /// Writes an item to the store.
    ///
    /// Since the value stored in the key-value store can now be different from the input (if the
    /// `WriteOptions.CONCAT` flag is set), we need to return the resulting `Value` to the
    /// requester.
    ///
    /// We use an (anonymous) `table` and a (named) `flexible union` as the request and response
    /// payload, respectively, to allow for easier future evolution. Both of these types are
    /// `flexible`, meaning that adding or removing members is binary-compatible. This makes them
    /// much easier to evolve that the `struct` types that were previously used, which cannot be
    /// changed after release without breaking ABI.
    WriteItem { payload: StoreWriteItemRequest, responder: StoreWriteItemResponder },
    /// An interaction was received which does not match any known method.
    #[non_exhaustive]
    _UnknownMethod {
        /// Ordinal of the method that was called.
        ordinal: u64,
        control_handle: StoreControlHandle,
        method_type: fidl::MethodType,
    },
}

impl StoreRequest {
    #[allow(irrefutable_let_patterns)]
    pub fn into_write_item(self) -> Option<(StoreWriteItemRequest, StoreWriteItemResponder)> {
        if let StoreRequest::WriteItem { payload, responder } = self {
            Some((payload, responder))
        } else {
            None
        }
    }

    /// Name of the method defined in FIDL
    pub fn method_name(&self) -> &'static str {
        match *self {
            StoreRequest::WriteItem { .. } => "write_item",
            StoreRequest::_UnknownMethod { method_type: fidl::MethodType::OneWay, .. } => {
                "unknown one-way method"
            }
            StoreRequest::_UnknownMethod { method_type: fidl::MethodType::TwoWay, .. } => {
                "unknown two-way method"
            }
        }
    }
}

#[derive(Debug, Clone)]
pub struct StoreControlHandle {
    inner: std::sync::Arc<fidl::ServeInner<fidl::encoding::DefaultFuchsiaResourceDialect>>,
}

impl fidl::endpoints::ControlHandle for StoreControlHandle {
    fn shutdown(&self) {
        self.inner.shutdown()
    }
    fn shutdown_with_epitaph(&self, status: zx_status::Status) {
        self.inner.shutdown_with_epitaph(status)
    }

    fn is_closed(&self) -> bool {
        self.inner.channel().is_closed()
    }
    fn on_closed(&self) -> fidl::OnSignalsRef<'_> {
        self.inner.channel().on_closed()
    }

    #[cfg(target_os = "fuchsia")]
    fn signal_peer(
        &self,
        clear_mask: zx::Signals,
        set_mask: zx::Signals,
    ) -> Result<(), zx_status::Status> {
        use fidl::Peered;
        self.inner.channel().signal_peer(clear_mask, set_mask)
    }
}

impl StoreControlHandle {}

#[must_use = "FIDL methods require a response to be sent"]
#[derive(Debug)]
pub struct StoreWriteItemResponder {
    control_handle: std::mem::ManuallyDrop<StoreControlHandle>,
    tx_id: u32,
}

/// Set the the channel to be shutdown (see [`StoreControlHandle::shutdown`])
/// if the responder is dropped without sending a response, so that the client
/// doesn't hang. To prevent this behavior, call `drop_without_shutdown`.
impl std::ops::Drop for StoreWriteItemResponder {
    fn drop(&mut self) {
        self.control_handle.shutdown();
        // Safety: drops once, never accessed again
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
    }
}

impl fidl::endpoints::Responder for StoreWriteItemResponder {
    type ControlHandle = StoreControlHandle;

    fn control_handle(&self) -> &StoreControlHandle {
        &self.control_handle
    }

    fn drop_without_shutdown(mut self) {
        // Safety: drops once, never accessed again due to mem::forget
        unsafe { std::mem::ManuallyDrop::drop(&mut self.control_handle) };
        // Prevent Drop from running (which would shut down the channel)
        std::mem::forget(self);
    }
}

impl StoreWriteItemResponder {
    /// Sends a response to the FIDL transaction.
    ///
    /// Sets the channel to shutdown if an error occurs.
    pub fn send(self, mut result: Result<&Value, WriteError>) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        if _result.is_err() {
            self.control_handle.shutdown();
        }
        self.drop_without_shutdown();
        _result
    }

    /// Similar to "send" but does not shutdown the channel if an error occurs.
    pub fn send_no_shutdown_on_err(
        self,
        mut result: Result<&Value, WriteError>,
    ) -> Result<(), fidl::Error> {
        let _result = self.send_raw(result);
        self.drop_without_shutdown();
        _result
    }

    fn send_raw(&self, mut result: Result<&Value, WriteError>) -> Result<(), fidl::Error> {
        self.control_handle.inner.send::<fidl::encoding::FlexibleResultType<Value, WriteError>>(
            fidl::encoding::FlexibleResult::new(result),
            self.tx_id,
            0xdbd4bf1e49abe6e,
            fidl::encoding::DynamicFlags::FLEXIBLE,
        )
    }
}

mod internal {
    use super::*;
}