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events.c
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events.c
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/*
* Copyright (c) 2016 Fastly
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "h2o.h"
#include <inttypes.h>
struct st_events_status_ctx_t {
uint64_t emitted_status_errors[H2O_STATUS_ERROR_MAX];
uint64_t h2_protocol_level_errors[H2O_HTTP2_ERROR_MAX];
uint64_t h2_read_closed;
uint64_t h2_write_closed;
};
static void events_status_per_thread(void *priv, h2o_context_t *ctx)
{
size_t i;
struct st_events_status_ctx_t *esc = priv;
for (i = 0; i < H2O_STATUS_ERROR_MAX; i++) {
esc->emitted_status_errors[i] += ctx->emitted_error_status[i];
}
for (i = 0; i < H2O_HTTP2_ERROR_MAX; i++) {
esc->h2_protocol_level_errors[i] += ctx->http2.events.protocol_level_errors[i];
}
esc->h2_read_closed += ctx->http2.events.read_closed;
esc->h2_write_closed += ctx->http2.events.write_closed;
}
static void *events_status_init(void)
{
struct st_events_status_ctx_t *ret;
ret = h2o_mem_alloc(sizeof(*ret));
memset(ret, 0, sizeof(*ret));
return ret;
}
static h2o_iovec_t events_status_final(void *priv, h2o_globalconf_t *gconf, h2o_req_t *req)
{
struct st_events_status_ctx_t *esc = priv;
h2o_iovec_t ret;
#define H1_AGG_ERR(status_) \
esc->emitted_status_errors[H2O_STATUS_ERROR_ ## status_]
#define H2_AGG_ERR(err_) \
esc->h2_protocol_level_errors[-H2O_HTTP2_ERROR_ ## err_]
#define BUFSIZE (2*1024)
ret.base = h2o_mem_alloc_pool(&req->pool, BUFSIZE);
ret.len = snprintf(ret.base, BUFSIZE, ",\n"
" \"http1-errors.400\": %" PRIu64 ",\n"
" \"http1-errors.403\": %" PRIu64 ",\n"
" \"http1-errors.404\": %" PRIu64 ",\n"
" \"http1-errors.405\": %" PRIu64 ",\n"
" \"http1-errors.416\": %" PRIu64 ",\n"
" \"http1-errors.417\": %" PRIu64 ",\n"
" \"http1-errors.500\": %" PRIu64 ",\n"
" \"http1-errors.502\": %" PRIu64 ",\n"
" \"http1-errors.503\": %" PRIu64 ",\n"
" \"http2-errors.protocol\": %" PRIu64 ", \n"
" \"http2-errors.internal\": %" PRIu64 ", \n"
" \"http2-errors.flow-control\": %" PRIu64 ", \n"
" \"http2-errors.settings-timeout\": %" PRIu64 ", \n"
" \"http2-errors.stream-closed\": %" PRIu64 ", \n"
" \"http2-errors.frame-size\": %" PRIu64 ", \n"
" \"http2-errors.refused-stream\": %" PRIu64 ", \n"
" \"http2-errors.cancel\": %" PRIu64 ", \n"
" \"http2-errors.compression\": %" PRIu64 ", \n"
" \"http2-errors.connect\": %" PRIu64 ", \n"
" \"http2-errors.enhance-your-calm\": %" PRIu64 ", \n"
" \"http2-errors.inadequate-security\": %" PRIu64 ", \n"
" \"http2.read-closed\": %" PRIu64 ", \n"
" \"http2.write-closed\": %" PRIu64 "\n",
H1_AGG_ERR(400), H1_AGG_ERR(403), H1_AGG_ERR(404),
H1_AGG_ERR(405), H1_AGG_ERR(416), H1_AGG_ERR(417),
H1_AGG_ERR(500), H1_AGG_ERR(502), H1_AGG_ERR(503),
H2_AGG_ERR(PROTOCOL), H2_AGG_ERR(INTERNAL), H2_AGG_ERR(FLOW_CONTROL),
H2_AGG_ERR(SETTINGS_TIMEOUT), H2_AGG_ERR(STREAM_CLOSED), H2_AGG_ERR(FRAME_SIZE),
H2_AGG_ERR(REFUSED_STREAM), H2_AGG_ERR(CANCEL), H2_AGG_ERR(COMPRESSION),
H2_AGG_ERR(CONNECT), H2_AGG_ERR(ENHANCE_YOUR_CALM), H2_AGG_ERR(INADEQUATE_SECURITY),
esc->h2_read_closed, esc->h2_write_closed);
free(esc);
return ret;
#undef BUFSIZE
#undef H1_AGG_ERR
#undef H2_AGG_ERR
}
h2o_status_handler_t events_status_handler = {
{ H2O_STRLIT("events") },
events_status_init,
events_status_per_thread,
events_status_final,
};