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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <curl/curl.h>
#include <MESA/MESA_handle_logger.h>
#include "cJSON.h"
#include "pg_valve_consul.h"
#include "pg_valve_tools.h"
CURLSH *curl_shared_handle;
static size_t write_response_to_string_cb(void *ptr, size_t size, size_t count, void *buff)
{
struct easy_string* estr=(struct easy_string*)buff;
if(estr->size-estr->len<size*count+1)
{
estr->size+=size*count*2+1;
estr->buff=(char*)realloc(estr->buff,estr->size);
}
memcpy(estr->buff+estr->len,ptr,size*count);
estr->len+=size*count;
estr->buff[estr->len]='\0';
return size*count;
}
static size_t read_body_to_send_cb(void *ptr, size_t size, size_t count, void *buff)
{
size_t len;
struct easy_string *request = (struct easy_string *)buff;
if(size==0 || count==0 || request->len>=request->size)
{
return 0;
}
len = request->size - request->len; //ʣ����ϴ��ij���
if(len > size * count)
{
len = size * count;
}
memcpy(ptr, request->buff + request->len, len);
request->len += len;
return len;
}
bool http_put_request(const char* url, const char *body, int timeout_s, struct easy_string* response)
{
CURL *curl;
CURLcode res1, res2;
long res_code;
struct easy_string request;
curl = curl_easy_init();
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_TIMEOUT, timeout_s);
curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 5);
curl_easy_setopt(curl, CURLOPT_NOSIGNAL,1L);
curl_easy_setopt(curl, CURLOPT_MAXREDIRS,3);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_response_to_string_cb);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, response);
curl_easy_setopt(curl, CURLOPT_SHARE, curl_shared_handle);
curl_easy_setopt(curl, CURLOPT_DNS_CACHE_TIMEOUT, 600L); //10���ӲŽ���һ��DNS����
curl_easy_setopt(curl, CURLOPT_UPLOAD, 1);
if(body != NULL)
{
request.size = strlen(body); //�ܴ�С
request.len = 0; //���ϴ�����
request.buff = (char *)body; //����
curl_easy_setopt(curl, CURLOPT_INFILESIZE, request.size);
curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_body_to_send_cb);
curl_easy_setopt(curl, CURLOPT_READDATA, &request);
}
res1 = curl_easy_perform(curl);
res2 = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &res_code);
curl_easy_cleanup(curl);
if(res1==CURLE_OK && res2==CURLE_OK && res_code==200)
{
return true;
}
return false;
}
bool consul_renew_session(const char *session_id, int timeout_s)
{
char reg_url[156];
struct easy_string response;
cJSON *session, *json;
snprintf(reg_url, 256, "http://localhost:8500/v1/session/renew/%s", session_id);
memset(&response,0,sizeof(response));
if(!http_put_request(reg_url, NULL, timeout_s, &response))
{
free(response.buff);
return false;
}
if(NULL == (session=cJSON_Parse(response.buff)))
{
free(response.buff);
return false;
}
free(response.buff);
if(NULL == (json=cJSON_GetObjectItem(session->child, "ID")))
{
cJSON_Delete(session);
return false;
}
if(strcmp(session_id, json->valuestring))
{
cJSON_Delete(session);
return false;
}
cJSON_Delete(session);
return true;
}
bool consul_create_session(int lock_delay_s, int ttl_s, char *session_id, int size, void *runlog)
{
cJSON *session, *json;
char tmpbuf[128], *body;
const char* reg_url="http://localhost:8500/v1/session/create";
struct easy_string response;
curl_global_init(CURL_GLOBAL_NOTHING);
curl_shared_handle = curl_share_init();
curl_share_setopt(curl_shared_handle, CURLSHOPT_SHARE, CURL_LOCK_DATA_DNS);
session = cJSON_CreateObject();
sprintf(tmpbuf, "%us", lock_delay_s);
cJSON_AddStringToObject(session, "LockDelay", tmpbuf);
sprintf(tmpbuf, "%us", ttl_s);
cJSON_AddStringToObject(session, "TTL", tmpbuf);
cJSON_AddStringToObject(session, "Name", "pg_valve_session");
cJSON_AddStringToObject(session, "Behavior", "release");
body = cJSON_Print(session);
cJSON_Delete(session);
memset(&response,0,sizeof(response));
while(!http_put_request(reg_url, body, 5, &response))
{
free(response.buff);
memset(&response,0,sizeof(response)); //��Ҫ��գ������һ��ʧ�ܺڶ��ε�ʱ����Ұָ��
MESA_HANDLE_RUNTIME_LOGV2(runlog, RLOG_LV_FATAL, "CONSUL", "consul_create_session failed, retry after 10 seconds.");
sleep(10);
}
free(body);
if(NULL == (session=cJSON_Parse(response.buff)))
{
free(response.buff);
return false;
}
free(response.buff);
if(NULL == (json=cJSON_GetObjectItem(session, "ID")))
{
cJSON_Delete(session);
return false;
}
snprintf(session_id, size, "%s", json->valuestring);
cJSON_Delete(session);
return true;
}
bool consul_try_get_lock(const char *session_id, const char *key, const char *value, int timeout_s)
{
char reg_url[156];
struct easy_string response;
snprintf(reg_url, 256, "http://localhost:8500/v1/kv/%s?acquire=%s", key, session_id);
memset(&response,0,sizeof(response));
if(!http_put_request(reg_url, value, timeout_s, &response))
{
free(response.buff);
return false;
}
if(!strcasecmp(response.buff, "true"))
{
free(response.buff);
return true;
}
free(response.buff);
return false;
}
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