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dm: vm_event: implement the default event handler 

The default event handler generates the vm_event message in json format,
then emit it through command monitor.

The event data json txt is currently leaved as blank. When a specific
event type is implemented, its event data generate handler can be added
correspondingly.

Tracked-On: #8547
Signed-off-by: Wu Zhou <wu.zhou@intel.com>
Reviewed-by: Jian Jun Chen <jian.jun.chen@intel.com>
This commit is contained in:
Wu Zhou 2023-08-04 17:18:44 +08:00 committed by acrnsi-robot
parent c77fb77e78
commit 36706ddf7a
1 changed files with 39 additions and 1 deletions
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40
devicemodel/core/vm_event.c
View File

@ -20,6 +20,8 @@
#include "hsm_ioctl_defs.h"
#include "sbuf.h"
#include "log.h"
#include <cjson/cJSON.h>
#include "monitor.h"
#define VM_EVENT_ELE_SIZE (sizeof(struct vm_event))
@ -29,6 +31,7 @@
#define MAX_EPOLL_EVENTS MAX_VM_EVENT_TUNNELS
typedef void (*vm_event_handler)(struct vmctx *ctx, struct vm_event *event);
typedef void (*vm_event_generate_jdata)(cJSON *event_obj, struct vm_event *event);
static int epoll_fd;
static bool started = false;
@ -54,17 +57,21 @@ struct vm_event_tunnel {
struct vm_event_proc {
vm_event_handler ve_handler;
vm_event_generate_jdata gen_jdata_handler;
};
static struct vm_event_proc ve_proc[VM_EVENT_COUNT] = {
[VM_EVENT_RTC_CHG] = {
.ve_handler = general_event_handler,
.gen_jdata_handler = NULL,
},
[VM_EVENT_POWEROFF] = {
.ve_handler = general_event_handler,
.gen_jdata_handler = NULL,
},
[VM_EVENT_TRIPLE_FAULT] = {
.ve_handler = general_event_handler,
.gen_jdata_handler = NULL,
},
};
@ -77,9 +84,40 @@ static inline struct vm_event_proc *get_vm_event_proc(struct vm_event *event)
return proc;
}
static char *generate_vm_event_message(struct vm_event *event)
{
char *event_msg = NULL;
cJSON *val;
cJSON *event_obj = cJSON_CreateObject();
struct vm_event_proc *proc;
if (event_obj == NULL)
return NULL;
val = cJSON_CreateNumber(event->type);
if (val == NULL)
return NULL;
cJSON_AddItemToObject(event_obj, "vm_event", val);
proc = get_vm_event_proc(event);
if (proc && proc->gen_jdata_handler) {
(proc->gen_jdata_handler)(event_obj, event);
}
event_msg = cJSON_Print(event_obj);
if (event_msg == NULL)
fprintf(stderr, "Failed to generate vm_event message.\n");
cJSON_Delete(event_obj);
return event_msg;
}
static void general_event_handler(struct vmctx *ctx, struct vm_event *event)
{
return;
char *msg = generate_vm_event_message(event);
if (msg != NULL) {
vm_monitor_send_vm_event(msg);
free(msg);
}
}
static void *vm_event_thread(void *param)