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/*
* Copyright (c) 2018 HUACHENTEL and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "sc_plugins.h"
#include "sc_model.h"
#include <dirent.h>
static int vpp_pid_start;
/* get vpp pid in system */
int get_vpp_pid()
{
DIR *dir;
struct dirent *ptr;
FILE *fp;
char filepath[50];
char filetext[20];
dir = opendir("/proc");
int vpp_pid = 0;
/* read vpp pid file in proc, return pid of vpp */
if (NULL != dir)
{
while (NULL != (ptr =readdir(dir)))
{
if ((0 == strcmp(ptr->d_name, ".")) || (0 == strcmp(ptr->d_name, "..")))
continue;
if (DT_DIR != ptr->d_type)
continue;
sprintf(filepath, "/proc/%s/cmdline",ptr->d_name);
fp = fopen(filepath, "r");
if (NULL != fp)
{
fread(filetext, 1, 13, fp);
filetext[12] = '\0';
if (filetext == strstr(filetext, "/usr/bin/vpp"))
vpp_pid = atoi(ptr->d_name);
fclose(fp);
}
}
closedir(dir);
}
return vpp_pid;
}
int sr_plugin_init_cb(sr_session_ctx_t *session, void **private_ctx)
{
plugin_main_t plugin_main;
int rc;
rc = sc_connect_vpp();
if (0 != rc) {
SRP_LOG_ERR("vpp connect error , with return %d.", rc);
return SR_ERR_INTERNAL;
}
plugin_main.session = session;
plugin_main.subscription = NULL;
/* Use the same sr_subscription_ctx for all models */
model_register(&plugin_main, ietf_interfaces_xpaths, IETF_INTERFACES_SIZE);
model_register(&plugin_main, ietf_nat_xpaths, IETF_NAT_SIZE);
model_register(&plugin_main, oc_interfaces_xpaths, OC_INTERFACES_SIZE);
model_register(&plugin_main, oc_local_routing_xpaths, OC_LROUTING_SIZE);
/* set subscription as our private context */
*private_ctx = plugin_main.subscription;
/* get the vpp pid sweetcomb connected, we assumed that only one vpp is run in system */
vpp_pid_start = get_vpp_pid();
return SR_ERR_OK;
}
void sr_plugin_cleanup_cb(sr_session_ctx_t *session, void *private_ctx)
{
/* subscription was set as our private context */
if (private_ctx != NULL)
sr_unsubscribe(session, private_ctx);
SRP_LOG_DBG_MSG("unload plugin ok.");
sc_disconnect_vpp();
SRP_LOG_DBG_MSG("plugin disconnect vpp ok.");
}
int sr_plugin_health_check_cb(sr_session_ctx_t *session, void *private_ctx)
{
/* health check, will use shell to detect vpp when plugin is loaded */
/* health_check will run every 10 seconds in loop*/
int vpp_pid_now = get_vpp_pid();
if(vpp_pid_now == vpp_pid_start)
{
return SR_ERR_OK;
}
else
{
return -1;
}
}
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