The Cloud Hyper HTTP server runs a synchronous, multi-threaded
loop that receives HTTP requests and tries to call the corresponding
endpoint handlers for the requests URIs.
An endpoint handler will parse the HTTP request and potentially
translate it into and IPC request. The handler holds an notifier and an
mspc Sender for respectively notifying and sending the IPC payload to
the VMM API server. The handler then waits for an API server response
and translate it back into an HTTP response.
The HTTP server is responsible for sending the reponse back to the
caller.
The HTTP server uses a static routes hash table that maps URIs to
endpoint handlers.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Cloud Hypervisor IPC is a simple, mpsc based protocol for threads to
send command to the furture VMM thread. This patch adds the API
definition for that IPC, which will be used by both the main thread
to e.g. start a new VM based on the CLI arguments and the future HTTP
server to relay external requests received from a local Unix domain
socket.
We are moving it to its own "api" module because this is where the
external API (HTTP based) will also be implemented.
The VMM thread will be listening for IPC requests from an mpsc receiver,
process them and send a response back through another mpsc channel.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
