out_logdna: refactored LogDNA URI formation to support configurable e…

…ndpoints (fluent#8051)

Previously, the LogDNA URI was hardcoded to use the '/logs/ingest' endpoint.
This change introduces flexibility by allowing users to specify their own
endpoint through the 'logdna_endpoint' configuration. This can be particularly
useful for users with different LogDNA setups or those using Super Tenancy.

Signed-off-by: Mirko Lazarevic <[email protected]>

plugins/out_logdna/logdna.c

@@ -405,7 +405,8 @@ static void cb_logdna_flush(struct flb_event_chunk *event_chunk,
         FLB_OUTPUT_RETURN(FLB_RETRY);
     }
     tmp = flb_sds_printf(&uri,
-                         "/logs/ingest?hostname=%s&mac=%s&ip=%s&now=%lu&tags=%s",
+                         "%s?hostname=%s&mac=%s&ip=%s&now=%lu&tags=%s",
+                         ctx->logdna_endpoint,
                          ctx->_hostname,
                          ctx->mac_addr,
                          ctx->ip_addr,
@@ -532,6 +533,12 @@ static struct flb_config_map config_map[] = {
      "LogDNA TCP port"
     },
 
+    {
+     FLB_CONFIG_MAP_STR, "logdna_endpoint", FLB_LOGDNA_ENDPOINT,
+     0, FLB_TRUE, offsetof(struct flb_logdna, logdna_endpoint),
+     "LogDNA endpoint to send logs"
+    },
+
     {
      FLB_CONFIG_MAP_STR, "api_key", NULL,
      0, FLB_TRUE, offsetof(struct flb_logdna, api_key),

plugins/out_logdna/logdna.h

@@ -25,13 +25,15 @@
 
 #define FLB_LOGDNA_HOST      "logs.logdna.com"
 #define FLB_LOGDNA_PORT      "443"
+#define FLB_LOGDNA_ENDPOINT  "/logs/ingest"
 #define FLB_LOGDNA_CT        "Content-Type"
 #define FLB_LOGDNA_CT_JSON   "application/json; charset=UTF-8"
 
 struct flb_logdna {
     /* Incoming Configuration Properties */
     flb_sds_t logdna_host;
     int       logdna_port;
+    flb_sds_t logdna_endpoint;
     flb_sds_t api_key;
     flb_sds_t hostname;
     flb_sds_t mac_addr;