121 lines
5.6 KiB
C
121 lines
5.6 KiB
C
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/***
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* Copyright 2020 HAProxy Technologies
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*
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* This file is part of the HAProxy OpenTracing filter.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef _OPENTRACING_EVENT_H_
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#define _OPENTRACING_EVENT_H_
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/*
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* This must be defined in order for macro FLT_OT_EVENT_DEFINES
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* and structure flt_ot_event_data to have the correct contents.
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*/
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#define AN_REQ_NONE 0
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#define AN_REQ_CLIENT_SESS_START 0
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#define AN_REQ_SERVER_UNAVAILABLE 0
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#define AN_REQ_CLIENT_SESS_END 0
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#define AN_RES_SERVER_SESS_START 0
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#define AN_RES_SERVER_SESS_END 0
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#define SMP_VAL_FE_ 0
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#define SMP_VAL_BE_ 0
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/*
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* Event names are selected to be somewhat compatible with the SPOE filter,
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* from which the following names are taken:
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* - on-client-session -> on-client-session-start
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* - on-frontend-tcp-request
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* - on-frontend-http-request
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* - on-backend-tcp-request
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* - on-backend-http-request
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* - on-server-session -> on-server-session-start
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* - on-tcp-response
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* - on-http-response
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*
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* FLT_OT_EVENT_NONE is used as an index for 'ot-scope' sections that do not
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* have an event defined. The 'ot-scope' sections thus defined can be used
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* within the 'ot-group' section.
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*
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* A description of the macro arguments can be found in the structure
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* flt_ot_event_data definition
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*/
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#define FLT_OT_EVENT_DEFINES \
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FLT_OT_EVENT_DEF( NONE, REQ, , , 0, "") \
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FLT_OT_EVENT_DEF( CLIENT_SESS_START, REQ, CON_ACC, , 1, "on-client-session-start") \
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FLT_OT_EVENT_DEF( INSPECT_FE, REQ, REQ_CNT, , 1, "on-frontend-tcp-request") \
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FLT_OT_EVENT_DEF( WAIT_HTTP, REQ, , , 1, "on-http-wait-request") \
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FLT_OT_EVENT_DEF( HTTP_BODY, REQ, , , 1, "on-http-body-request") \
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FLT_OT_EVENT_DEF( HTTP_PROCESS_FE, REQ, HRQ_HDR, , 1, "on-frontend-http-request") \
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FLT_OT_EVENT_DEF( SWITCHING_RULES, REQ, , , 1, "on-switching-rules-request") \
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FLT_OT_EVENT_DEF( INSPECT_BE, REQ, REQ_CNT, REQ_CNT, 1, "on-backend-tcp-request") \
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FLT_OT_EVENT_DEF( HTTP_PROCESS_BE, REQ, HRQ_HDR, HRQ_HDR, 1, "on-backend-http-request") \
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/* FLT_OT_EVENT_DEF( HTTP_TARPIT, REQ, , , 1, "on-http-tarpit-request") */ \
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FLT_OT_EVENT_DEF( SRV_RULES, REQ, , , 1, "on-process-server-rules-request") \
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FLT_OT_EVENT_DEF( HTTP_INNER, REQ, , , 1, "on-http-process-request") \
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FLT_OT_EVENT_DEF( PRST_RDP_COOKIE, REQ, , , 1, "on-tcp-rdp-cookie-request") \
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FLT_OT_EVENT_DEF( STICKING_RULES, REQ, , , 1, "on-process-sticking-rules-request") \
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FLT_OT_EVENT_DEF( CLIENT_SESS_END, REQ, , , 0, "on-client-session-end") \
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FLT_OT_EVENT_DEF(SERVER_UNAVAILABLE, REQ, , , 0, "on-server-unavailable") \
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\
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FLT_OT_EVENT_DEF( SERVER_SESS_START, RES, , SRV_CON, 0, "on-server-session-start") \
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FLT_OT_EVENT_DEF( INSPECT, RES, RES_CNT, RES_CNT, 0, "on-tcp-response") \
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FLT_OT_EVENT_DEF( WAIT_HTTP, RES, , , 1, "on-http-wait-response") \
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FLT_OT_EVENT_DEF( STORE_RULES, RES, , , 1, "on-process-store-rules-response") \
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FLT_OT_EVENT_DEF( HTTP_PROCESS_BE, RES, HRS_HDR, HRS_HDR, 1, "on-http-response") \
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FLT_OT_EVENT_DEF( SERVER_SESS_END, RES, , , 0, "on-server-session-end")
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enum FLT_OT_EVENT_enum {
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#define FLT_OT_EVENT_DEF(a,b,c,d,e,f) FLT_OT_EVENT_##b##_##a,
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FLT_OT_EVENT_DEFINES
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FLT_OT_EVENT_MAX
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#undef FLT_OT_EVENT_DEF
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};
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enum FLT_OT_EVENT_SAMPLE_enum {
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FLT_OT_EVENT_SAMPLE_TAG = 0,
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FLT_OT_EVENT_SAMPLE_LOG,
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FLT_OT_EVENT_SAMPLE_BAGGAGE,
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};
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struct flt_ot_event_data {
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uint an_bit; /* Used channel analyser. */
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uint smp_opt_dir; /* Fetch direction (request/response). */
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uint smp_val_fe; /* Valid FE fetch location. */
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uint smp_val_be; /* Valid BE fetch location. */
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bool flag_http_inject; /* Span context injection allowed. */
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const char *name; /* Filter event name. */
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};
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struct flt_ot_conf_scope;
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extern const struct flt_ot_event_data flt_ot_event_data[FLT_OT_EVENT_MAX];
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int flt_ot_scope_run(struct stream *s, struct filter *f, struct channel *chn, struct flt_ot_conf_scope *conf_scope, const struct timespec *ts, uint dir, char **err);
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int flt_ot_event_run(struct stream *s, struct filter *f, struct channel *chn, int event, char **err);
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#endif /* _OPENTRACING_EVENT_H_ */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*
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* vi: noexpandtab shiftwidth=8 tabstop=8
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*/
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