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Add Content-Type header to promhttp #57

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Add Content-Type header to promhttp #57

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64a8b45
Add Content-Type header to promhttp
Apr 23, 2021
8681a9e
Fix MIMETYPE
dsmeytis May 13, 2021
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6 changes: 6 additions & 0 deletions promhttp/src/promhttp.c
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,8 @@
#include "microhttpd.h"
#include "prom.h"

#define MIMETYPE_TEXT_PLAIN "text/plain; version=0.0.4; charset=utf-8"

prom_collector_registry_t *PROM_ACTIVE_REGISTRY;

void promhttp_set_active_collector_registry(prom_collector_registry_t *active_registry) {
Expand All @@ -34,26 +36,30 @@ int promhttp_handler(void *cls, struct MHD_Connection *connection, const char *u
if (strcmp(method, "GET") != 0) {
char *buf = "Invalid HTTP Method\n";
struct MHD_Response *response = MHD_create_response_from_buffer(strlen(buf), (void *)buf, MHD_RESPMEM_PERSISTENT);
MHD_add_response_header (response, "Content-Type", MIMETYPE_TEXT_PLAIN);
int ret = MHD_queue_response(connection, MHD_HTTP_BAD_REQUEST, response);
MHD_destroy_response(response);
return ret;
}
if (strcmp(url, "/") == 0) {
char *buf = "OK\n";
struct MHD_Response *response = MHD_create_response_from_buffer(strlen(buf), (void *)buf, MHD_RESPMEM_PERSISTENT);
MHD_add_response_header (response, "Content-Type", MIMETYPE_TEXT_PLAIN);
int ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
MHD_destroy_response(response);
return ret;
}
if (strcmp(url, "/metrics") == 0) {
const char *buf = prom_collector_registry_bridge(PROM_ACTIVE_REGISTRY);
struct MHD_Response *response = MHD_create_response_from_buffer(strlen(buf), (void *)buf, MHD_RESPMEM_MUST_FREE);
MHD_add_response_header (response, "Content-Type", MIMETYPE_TEXT_PLAIN);
int ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
MHD_destroy_response(response);
return ret;
}
char *buf = "Bad Request\n";
struct MHD_Response *response = MHD_create_response_from_buffer(strlen(buf), (void *)buf, MHD_RESPMEM_PERSISTENT);
MHD_add_response_header (response, "Content-Type", MIMETYPE_TEXT_PLAIN);
int ret = MHD_queue_response(connection, MHD_HTTP_BAD_REQUEST, response);
MHD_destroy_response(response);
return ret;
Expand Down