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vmm: api: Return an optional response from vm_action()

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Any action that relies on vm_action() can now return a response body.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2020-06-11 14:32:44 +02:00 committed by Rob Bradford
parent 038180269e
commit 0bc2b08d3a
1 changed files with 31 additions and 20 deletions
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51
vmm/src/api/mod.rs
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@ -28,7 +28,6 @@
//! response channel Receiver.
//! 5. The thread handles the response and forwards potential errors.
extern crate micro_http;
extern crate vm_device;
extern crate vmm_sys_util;
@ -41,6 +40,7 @@ use crate::config::{
DeviceConfig, DiskConfig, FsConfig, NetConfig, PmemConfig, RestoreConfig, VmConfig, VsockConfig,
};
use crate::vm::{Error as VmError, VmState};
use micro_http::Body;
use std::io;
use std::sync::mpsc::{channel, RecvError, SendError, Sender};
use std::sync::{Arc, Mutex};
@ -175,6 +175,9 @@ pub enum ApiResponsePayload {
/// Vmm ping response
VmmPing(VmmPingResponse),
/// Vm action response
VmAction(Vec<u8>),
}
/// This is the response sent by the VMM API server through the mpsc channel.
@ -328,7 +331,11 @@ pub enum VmAction {
Snapshot(Arc<VmSnapshotConfig>),
}
fn vm_action(api_evt: EventFd, api_sender: Sender<ApiRequest>, action: VmAction) -> ApiResult<()> {
fn vm_action(
api_evt: EventFd,
api_sender: Sender<ApiRequest>,
action: VmAction,
) -> ApiResult<Option<Body>> {
let (response_sender, response_receiver) = channel();
use VmAction::*;
@ -355,32 +362,36 @@ fn vm_action(api_evt: EventFd, api_sender: Sender<ApiRequest>, action: VmAction)
api_sender.send(request).map_err(ApiError::RequestSend)?;
api_evt.write(1).map_err(ApiError::EventFdWrite)?;
response_receiver.recv().map_err(ApiError::ResponseRecv)??;
let body = match response_receiver.recv().map_err(ApiError::ResponseRecv)?? {
ApiResponsePayload::VmAction(response) => Some(Body::new(response)),
ApiResponsePayload::Empty => None,
_ => return Err(ApiError::ResponsePayloadType),
};
Ok(())
Ok(body)
}
pub fn vm_boot(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<()> {
pub fn vm_boot(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::Boot)
}
pub fn vm_delete(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<()> {
pub fn vm_delete(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::Delete)
}
pub fn vm_shutdown(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<()> {
pub fn vm_shutdown(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::Shutdown)
}
pub fn vm_reboot(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<()> {
pub fn vm_reboot(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::Reboot)
}
pub fn vm_pause(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<()> {
pub fn vm_pause(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::Pause)
}
pub fn vm_resume(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<()> {
pub fn vm_resume(api_evt: EventFd, api_sender: Sender<ApiRequest>) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::Resume)
}
@ -388,7 +399,7 @@ pub fn vm_snapshot(
api_evt: EventFd,
api_sender: Sender<ApiRequest>,
data: Arc<VmSnapshotConfig>,
) -> ApiResult<()> {
) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::Snapshot(data))
}
@ -396,7 +407,7 @@ pub fn vm_restore(
api_evt: EventFd,
api_sender: Sender<ApiRequest>,
data: Arc<RestoreConfig>,
) -> ApiResult<()> {
) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::Restore(data))
}
@ -451,7 +462,7 @@ pub fn vm_resize(
api_evt: EventFd,
api_sender: Sender<ApiRequest>,
data: Arc<VmResizeData>,
) -> ApiResult<()> {
) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::Resize(data))
}
@ -459,7 +470,7 @@ pub fn vm_add_device(
api_evt: EventFd,
api_sender: Sender<ApiRequest>,
data: Arc<DeviceConfig>,
) -> ApiResult<()> {
) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::AddDevice(data))
}
@ -467,7 +478,7 @@ pub fn vm_remove_device(
api_evt: EventFd,
api_sender: Sender<ApiRequest>,
data: Arc<VmRemoveDeviceData>,
) -> ApiResult<()> {
) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::RemoveDevice(data))
}
@ -475,7 +486,7 @@ pub fn vm_add_disk(
api_evt: EventFd,
api_sender: Sender<ApiRequest>,
data: Arc<DiskConfig>,
) -> ApiResult<()> {
) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::AddDisk(data))
}
@ -483,7 +494,7 @@ pub fn vm_add_fs(
api_evt: EventFd,
api_sender: Sender<ApiRequest>,
data: Arc<FsConfig>,
) -> ApiResult<()> {
) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::AddFs(data))
}
@ -491,7 +502,7 @@ pub fn vm_add_pmem(
api_evt: EventFd,
api_sender: Sender<ApiRequest>,
data: Arc<PmemConfig>,
) -> ApiResult<()> {
) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::AddPmem(data))
}
@ -499,7 +510,7 @@ pub fn vm_add_net(
api_evt: EventFd,
api_sender: Sender<ApiRequest>,
data: Arc<NetConfig>,
) -> ApiResult<()> {
) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::AddNet(data))
}
@ -507,6 +518,6 @@ pub fn vm_add_vsock(
api_evt: EventFd,
api_sender: Sender<ApiRequest>,
data: Arc<VsockConfig>,
) -> ApiResult<()> {
) -> ApiResult<Option<Body>> {
vm_action(api_evt, api_sender, VmAction::AddVsock(data))
}