#include "defs.h"
#include "metacube2.h"
+#include "metrics.h"
struct MHD_Connection;
struct MHD_Response;
HTTPD::HTTPD()
{
+ global_metrics.add("num_connected_clients", &metric_num_connected_clients, Metrics::TYPE_GAUGE);
}
HTTPD::~HTTPD()
framing = HTTPD::Stream::FRAMING_RAW;
}
+ if (strcmp(url, "/metrics") == 0) {
+ string contents = global_metrics.serialize();
+ MHD_Response *response = MHD_create_response_from_buffer(
+ contents.size(), &contents[0], MHD_RESPMEM_MUST_COPY);
+ MHD_add_response_header(response, "Content-type", "text/plain");
+ int ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
+ MHD_destroy_response(response); // Only decreases the refcount; actual free is after the request is done.
+ return ret;
+ }
+
HTTPD::Stream *stream = new HTTPD::Stream(this, framing);
stream->add_data(header.data(), header.size(), Stream::DATA_TYPE_HEADER);
{
unique_lock<mutex> lock(streams_mutex);
streams.insert(stream);
}
+ ++metric_num_connected_clients;
*con_cls = stream;
// Does not strictly have to be equal to MUX_BUFFER_SIZE.
MHD_Response *response = MHD_create_response_from_callback(
(size_t)-1, MUX_BUFFER_SIZE, &HTTPD::Stream::reader_callback_thunk, stream, &HTTPD::free_stream);
-
// TODO: Content-type?
if (framing == HTTPD::Stream::FRAMING_METACUBE) {
MHD_add_response_header(response, "Content-encoding", "metacube");
}
+
int ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
MHD_destroy_response(response); // Only decreases the refcount; actual free is after the request is done.
delete stream;
httpd->streams.erase(stream);
}
+ --httpd->metric_num_connected_clients;
}
ssize_t HTTPD::Stream::reader_callback_thunk(void *cls, uint64_t pos, char *buf, size_t max)