Files
neon/pgxn/neon/extension_server.c
Heikki Linnakangas 1a87975d95 Misc cleanup of #includes and comments in the neon extension (#11456)
Remove useless and often wrong IDENTIFICATION comments. PostgreSQL
sources have them, mostly for historical reasons, but there's no need
for us to copy that style.

Remove unnecessary #includes in header files, putting the #includes
directly in the .c files that need them. The principle is that a header
file should #include other header files if they need definitions from
them, such that each header file can be compiled on its own, but not
other #includes. (There are tools to enforce that, but this was just a
manual clean up of violations that I happened to spot.)
2025-04-06 15:34:13 +00:00

113 lines
3.3 KiB
C

/*-------------------------------------------------------------------------
*
* extension_server.c
* Request compute_ctl to download extension files.
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include <curl/curl.h>
#include "utils/guc.h"
#include "extension_server.h"
#include "neon_utils.h"
static int extension_server_port = 0;
static int extension_server_request_timeout = 60;
static int extension_server_connect_timeout = 60;
static download_extension_file_hook_type prev_download_extension_file_hook = NULL;
/*
* to download all SQL (and data) files for an extension:
* curl -X POST http://localhost:8080/extension_server/postgis
* it covers two possible extension files layouts:
* 1. extension_name--version--platform.sql
* 2. extension_name/extension_name--version.sql
* extension_name/extra_files.csv
* to download specific library file:
* curl -X POST http://localhost:8080/extension_server/postgis-3.so?is_library=true
*/
static bool
neon_download_extension_file_http(const char *filename, bool is_library)
{
CURLcode res;
bool ret = false;
CURL *handle = NULL;
char *compute_ctl_url;
handle = alloc_curl_handle();
curl_easy_setopt(handle, CURLOPT_CUSTOMREQUEST, "POST");
if (extension_server_request_timeout > 0)
curl_easy_setopt(handle, CURLOPT_TIMEOUT, (long)extension_server_request_timeout /* seconds */ );
if (extension_server_connect_timeout > 0)
curl_easy_setopt(handle, CURLOPT_CONNECTTIMEOUT, (long)extension_server_connect_timeout /* seconds */ );
compute_ctl_url = psprintf("http://localhost:%d/extension_server/%s%s",
extension_server_port, filename, is_library ? "?is_library=true" : "");
elog(LOG, "Sending request to compute_ctl: %s", compute_ctl_url);
curl_easy_setopt(handle, CURLOPT_URL, compute_ctl_url);
/* Perform the request, res will get the return code */
res = curl_easy_perform(handle);
curl_easy_cleanup(handle);
/* Check for errors */
if (res == CURLE_OK)
{
ret = true;
}
else
{
/*
* Don't error here because postgres will try to find the file and will
* fail with some proper error message if it's not found.
*/
elog(WARNING, "neon_download_extension_file_http failed: %s\n", curl_easy_strerror(res));
}
return ret;
}
void
pg_init_extension_server()
{
/* Port to connect to compute_ctl on localhost */
/* to request extension files. */
DefineCustomIntVariable("neon.extension_server_port",
"connection string to the compute_ctl",
NULL,
&extension_server_port,
0, 0, INT_MAX,
PGC_POSTMASTER,
0, /* no flags required */
NULL, NULL, NULL);
DefineCustomIntVariable("neon.extension_server_request_timeout",
"timeout for fetching extensions in seconds",
NULL,
&extension_server_request_timeout,
60, 0, INT_MAX,
PGC_SUSET,
GUC_UNIT_S,
NULL, NULL, NULL);
DefineCustomIntVariable("neon.extension_server_connect_timeout",
"timeout for connecting to the extension server in seconds",
NULL,
&extension_server_connect_timeout,
60, 0, INT_MAX,
PGC_SUSET,
GUC_UNIT_S,
NULL, NULL, NULL);
/* set download_extension_file_hook */
prev_download_extension_file_hook = download_extension_file_hook;
download_extension_file_hook = neon_download_extension_file_http;
}