#include <stdlib.h>
#include <string.h>
+#include <unistd.h>
#include <curl/curl.h>
#include <json/json.h>
#define QUERY_GET_DAILY_DOWNLOAD_TOTALS \
"?ws.op=getDailyDownloadTotals"
+static int DEFAULT_FETCH_RETRIES = 3;
+
static CURL *curl;
struct ucontent {
static char *fetch_url(const char *url)
{
struct ucontent *content = malloc(sizeof(struct ucontent));
- char *result = NULL;
+ char *result;
long code;
+ int retries;
if (debug)
printf("DEBUG: fetch_url %s\n", url);
if (!curl) {
+ if (debug)
+ printf("DEBUG: initializing CURL\n");
curl_global_init(CURL_GLOBAL_ALL);
curl = curl_easy_init();
}
if (!curl)
exit(EXIT_FAILURE);
+ result = NULL;
+
+ retries = DEFAULT_FETCH_RETRIES;
+
+ retrieve:
content->data = malloc(1);
content->data[0] = '\0';
content->len = 0;
curl_easy_setopt(curl, CURLOPT_USERAGENT, "ppastats/0.0");
if (curl_easy_perform(curl) == CURLE_OK) {
-
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
- if (code == 200)
+
+ switch (code) {
+ case 200:
result = content->data;
+ break;
+ case 500:
+ case 502:
+ case 503:
+ case 504:
+ if (retries) {
+ fprintf(stderr, "Fetch failed: %ld\n", code);
+
+ if (debug)
+ printf("Wait 5s before retry.\n");
+ sleep(5);
+
+ free(content->data);
+ retries--;
+ goto retrieve;
+ }
+ default:
+ fprintf(stderr, "Fetch failed: %ld\n", code);
+ }
}
if (!result)
if (!o)
break;
- result = list_add_list(result,
- (void **)json_object_to_bpph_list(o));
+ result = list_append_list(result,
+ (void **)json_object_to_bpph_list(o));
o_next = json_object_object_get(o, "next_collection_link");