The command handler is to implement handlers for each command,
currently, two handler is implemented for command monitor:
user_vm_destroy_handler: the handler is for user VM destroy command,
which shuts down to standard post-launched user VM forcefully.
user_vm_blkrescan_handler: the handler is for user VM blkrescan
command, which rescan virtio-blk device to revalidate and update
the backend file for user VM.
v1--v2:
Update log message format.
Generate JSON format ack message using libcjson lib APIs.
v2-->v3:
Update ACK message to {"ack": 0} or {"ack": -1}
Tracked-On: #5921
Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
The command module provides interfaces to find a command
intance, register handler for specified command, dispatch
command and invoke related handler.
find_command: find a command instance by name.
register_command_handler: register the handler for one
command instance.
dispatch_command_handlers: dispatch the command and invoke
registered handler.
v1-->v2:
Only support single handler for one command instance.
v2-->v3:
Remove command id.
Add error check to avoid regiter handler to command
instance which has handler.
Update the second parameter type of register_command_handler
to avoid unnecessary type conversion.
Tracked-On: #5921
Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
The socket module is to provide interfaces below, the unix domain
socket can be created by command monitor for the communication
between DM instance and libvirt daemon or kata container:
init_socket: allocate a new socket instance according to socket path
deinit_socket: free a socket instance
open_socket: open one unix domain socket server, initialize a
socket, create one thread to listen to client, another thread to
poll message from client.
close_socket: close one unix domain socket server
find_socket_client: find socket client instance according to fd
write_socket_char: send message through unix domain socket server
v1--v2:
Update some log message format and copyright format.
v2-->v3:
Update SOCKET_MAX_CLIENT to 1H since the socket instance of
command monitor only have one client (libvirt or kata container).
Tracked-On: #5921
Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com>
Acked-by: Wang, Yu1 <yu1.wang@intel.com>
