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vmm: api: Allow to delete non-booted VMs

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The action of "vm.delete" should not report errors on non-booted
VMs. This patch also revised the "docs/api.md" to reflect the right
'Prerequisites' of different API actions, e.g. on "vm.delete" and
"vm.boot".

Fixes: #1110

Signed-off-by: Bo Chen <chen.bo@intel.com>
This commit is contained in:
Bo Chen 2020-06-08 13:41:35 -07:00 committed by Rob Bradford
parent 313883f6e4
commit 625bab69bd
2 changed files with 8 additions and 7 deletions
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9
docs/api.md
View File

@ -81,8 +81,8 @@ Shut the VMM down | `/vmm.shutdown` | N/A | N/A
Action | Endpoint | Request Body | Response Body | Prerequisites
-----------------------------------|---------------------|---------------------------|-------------------|---------------------------
Create the VM | `/vm.create` | `/schemas/VmConfig` | N/A | The VM is not created yet
Delete the VM | `/vm.delete` | N/A | N/A | The VM is created but not booted
Boot the VM | `/vm.boot` | N/A | N/A | The VM is created
Delete the VM | `/vm.delete` | N/A | N/A | N/A
Boot the VM | `/vm.boot` | N/A | N/A | The VM is created but not booted
Shut the VM down | `/vm.shutdown` | N/A | N/A | The VM is booted
Reboot the VM | `/vm.reboot` | N/A | N/A | The VM is booted
Pause the VM | `/vm.pause` | N/A | N/A | The VM is booted
@ -274,7 +274,7 @@ are received and processed by the VMM control loop.
In order for the VMM control loop to respond to any internal API command, it
must be able to send a response back to the MPSC sender. For that purpose, all
internal API command payload carry the [Sender](https://doc.rust-lang.org/std/sync/mpsc/struct.Sender.html)
end of an [MPSC](https://doc.rust-lang.org/std/sync/mpsc/) channel.
end of an [MPSC](https://doc.rust-lang.org/std/sync/mpsc/) channel.
The sender of any internal API command is therefore responsible for:
@ -354,7 +354,7 @@ APIs work together, let's look at a complete VM creation flow, from the
} else {
Err(ApiError::VmAlreadyCreated)
};
sender.send(response).map_err(Error::ApiResponseSend)?;
}
```
@ -375,4 +375,3 @@ APIs work together, let's look at a complete VM creation flow, from the
user. This is abstracted by the
[micro_http](https://github.com/firecracker-microvm/firecracker/tree/master/src/micro_http)
crate.

6
vmm/src/lib.rs
View File

@ -424,8 +424,10 @@ impl Vmm {
return Ok(());
}
// First we try to shut the current VM down.
self.vm_shutdown()?;
// If a VM is booted, we first try to shut it down.
if self.vm.is_some() {
self.vm_shutdown()?;
}
self.vm_config = None;