refactor: get EXTVERSION from Makefile on worker

Author: steve-chavez

Makefile

@@ -1,5 +1,5 @@
 EXTENSION = pg_net
-EXTVERSION = 0.7
+EXTVERSION = 0.7.1
 
 DATA = $(wildcard sql/*--*.sql)
 
@@ -21,7 +21,7 @@ PG_CONFIG = pg_config
 SHLIB_LINK = -lcurl
 
 # Find <curl/curl.h> from system headers
-PG_CPPFLAGS := $(CPPFLAGS)
+PG_CPPFLAGS := $(CPPFLAGS) -DEXTVERSION=\"$(EXTVERSION)\"
 
 PGXS := $(shell $(PG_CONFIG) --pgxs)
 include $(PGXS)

src/worker.c

@@ -34,8 +34,6 @@
 
 PG_MODULE_MAGIC;
 
-#define VERSION "0.7.1"
-
 static char *ttl = "6 hours";
 static int batch_size = 500;
 char* database_name = "postgres";
@@ -117,7 +115,7 @@ static CURLMcode init(CURLM *cm, char *method, char *url, int timeout_millisecon
 	cdata->id = id;
 	cdata->request_headers = request_headers;
 
-	request_headers = curl_slist_append(request_headers, "User-Agent: pg_net/" VERSION);
+	request_headers = curl_slist_append(request_headers, "User-Agent: pg_net/" EXTVERSION);
 
 	if (strcasecmp(method, "GET") == 0) {
 		if (reqBody) {
@@ -464,7 +462,7 @@ _PG_init(void)
 	worker.bgw_start_time = BgWorkerStart_RecoveryFinished;
 	snprintf(worker.bgw_library_name, BGW_MAXLEN, "pg_net");
 	snprintf(worker.bgw_function_name, BGW_MAXLEN, "worker_main");
-	snprintf(worker.bgw_name, BGW_MAXLEN, "pg_net " VERSION " worker");
+	snprintf(worker.bgw_name, BGW_MAXLEN, "pg_net " EXTVERSION " worker");
 	worker.bgw_restart_time = 32;
 	worker.bgw_main_arg = (Datum) 0;
 	worker.bgw_notify_pid = 0;