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/*
* Copyright (c) 2016 DeNA Co., Ltd., Kazuho Oku
*
* 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"
struct st_requests_status_ctx_t {
h2o_logconf_t *logconf;
h2o_iovec_t req_data;
pthread_mutex_t mutex;
};
struct st_collect_req_status_cbdata_t {
h2o_logconf_t *logconf;
h2o_buffer_t *buffer;
};
static int collect_req_status(h2o_req_t *req, void *_cbdata)
{
struct st_collect_req_status_cbdata_t *cbdata = _cbdata;
/* collect log */
char buf[4096];
size_t len = sizeof(buf);
char *logline = h2o_log_request(cbdata->logconf, req, &len, buf);
assert(len != 0);
--len; /* omit trailing LF */
/* append to buffer */
h2o_buffer_reserve(&cbdata->buffer, len + 3);
memcpy(cbdata->buffer->bytes + cbdata->buffer->size, logline, len);
cbdata->buffer->size += len;
if (logline != buf)
free(logline);
return 0;
}
static void requests_status_per_thread(void *priv, h2o_context_t *ctx)
{
struct st_requests_status_ctx_t *rsc = priv;
struct st_collect_req_status_cbdata_t cbdata = {rsc->logconf};
/* we encountered an error at init() time, return early */
if (rsc->logconf == NULL)
return;
h2o_buffer_init(&cbdata.buffer, &h2o_socket_buffer_prototype);
ctx->globalconf->http1.callbacks.foreach_request(ctx, collect_req_status, &cbdata);
ctx->globalconf->http2.callbacks.foreach_request(ctx, collect_req_status, &cbdata);
/* concat JSON elements */
if (cbdata.buffer->size != 0) {
pthread_mutex_lock(&rsc->mutex);
if (rsc->req_data.len == 0)
h2o_buffer_consume(&cbdata.buffer, 1); /* skip preceeding comma */
rsc->req_data.base = h2o_mem_realloc(rsc->req_data.base, rsc->req_data.len + cbdata.buffer->size);
memcpy(rsc->req_data.base + rsc->req_data.len, cbdata.buffer->bytes, cbdata.buffer->size);
rsc->req_data.len += cbdata.buffer->size;
pthread_mutex_unlock(&rsc->mutex);
}
h2o_buffer_dispose(&cbdata.buffer);
}
static void *requests_status_init(void)
{
struct st_requests_status_ctx_t *rsc = h2o_mem_alloc(sizeof(*rsc));
char errbuf[256];
#define ELEMENT(key, expr) "\"" key "\": \"" expr "\""
#define X_ELEMENT(id) ELEMENT(id, "%{" id "}x")
#define SEPARATOR ", "
const char *fmt = ",\n {"
/* combined_log */
ELEMENT("host", "%h") SEPARATOR ELEMENT("user", "%u") SEPARATOR ELEMENT("at", "%{%Y%m%dT%H%M%S}t.%{usec_frac}t%{%z}t")
SEPARATOR ELEMENT("method", "%m") SEPARATOR ELEMENT("path", "%U") SEPARATOR ELEMENT("query", "%q")
SEPARATOR ELEMENT("protocol", "%H") SEPARATOR ELEMENT("referer", "%{Referer}i")
SEPARATOR ELEMENT("user-agent", "%{User-agent}i") SEPARATOR
/* time */
X_ELEMENT("connect-time") SEPARATOR X_ELEMENT("request-header-time") SEPARATOR X_ELEMENT("request-body-time")
SEPARATOR X_ELEMENT("request-total-time") SEPARATOR X_ELEMENT("process-time") SEPARATOR X_ELEMENT("response-time")
SEPARATOR
/* connection */
X_ELEMENT("connection-id") SEPARATOR X_ELEMENT("ssl.protocol-version") SEPARATOR X_ELEMENT("ssl.session-reused")
SEPARATOR X_ELEMENT("ssl.cipher") SEPARATOR X_ELEMENT("ssl.cipher-bits") SEPARATOR X_ELEMENT("ssl.session-ticket")
SEPARATOR
/* http1 */
X_ELEMENT("http1.request-index") SEPARATOR
/* http2 */
X_ELEMENT("http2.stream-id") SEPARATOR X_ELEMENT("http2.priority.received.exclusive")
SEPARATOR X_ELEMENT("http2.priority.received.parent") SEPARATOR X_ELEMENT("http2.priority.received.weight")
SEPARATOR X_ELEMENT("http2.priority.actual.parent") SEPARATOR X_ELEMENT("http2.priority.actual.weight") SEPARATOR
/* misc */
ELEMENT("authority", "%V")
/* end */
"}";
#undef ELEMENT
#undef X_ELEMENT
#undef SEPARATOR
/* compile logconf */
if ((rsc->logconf = h2o_logconf_compile(fmt, H2O_LOGCONF_ESCAPE_JSON, errbuf)) == NULL)
/* log format compilation error is an internal logic flaw, therefore we need not send the details to the client */
fprintf(stderr, "[lib/handler/status/requests.c] failed to compile log format: %s", errbuf);
rsc->req_data = (h2o_iovec_t){NULL};
pthread_mutex_init(&rsc->mutex, NULL);
return rsc;
}
static h2o_iovec_t requests_status_final(void *priv, h2o_globalconf_t *gconf, h2o_req_t *req)
{
h2o_iovec_t ret = {NULL};
struct st_requests_status_ctx_t *rsc = priv;
if (rsc->logconf != NULL) {
ret = h2o_concat(&req->pool, h2o_iovec_init(H2O_STRLIT(",\n \"requests\": [")), rsc->req_data,
h2o_iovec_init(H2O_STRLIT("\n ]")));
h2o_logconf_dispose(rsc->logconf);
}
free(rsc->req_data.base);
pthread_mutex_destroy(&rsc->mutex);
free(rsc);
return ret;
}
h2o_status_handler_t requests_status_handler = {
{H2O_STRLIT("requests")}, requests_status_init, requests_status_per_thread, requests_status_final,
};
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