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/***
* Copyright 2020 HAProxy Technologies
*
* This file is part of the HAProxy OpenTracing filter.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _OPENTRACING_SCOPE_H_
#define _OPENTRACING_SCOPE_H_
#define FLT_OT_SCOPE_SPAN_FINISH_REQ "*req*"
#define FLT_OT_SCOPE_SPAN_FINISH_RES "*res*"
#define FLT_OT_SCOPE_SPAN_FINISH_ALL "*"
#define FLT_OT_RT_CTX(a) ((struct flt_ot_runtime_context *)(a))
#define FLT_OT_DBG_SCOPE_SPAN(f,a) \
FLT_OT_DBG(3, "%s%p:{ '%s' %zu %u %hhu %p %d %p %p }", \
(f), (a), FLT_OT_STR_HDR_ARGS(a, id), (a)->smp_opt_dir, \
(a)->flag_finish, (a)->span, (a)->ref_type, (a)->ref_span, (a)->ref_ctx)
#define FLT_OT_DBG_SCOPE_CONTEXT(f,a) \
FLT_OT_DBG(3, "%s%p:{ '%s' %zu %u %hhu %p }", \
(f), (a), FLT_OT_STR_HDR_ARGS(a, id), (a)->smp_opt_dir, \
(a)->flag_finish, (a)->context)
#define FLT_OT_DBG_SCOPE_DATA(f,a) \
FLT_OT_DBG(3, "%s%p:{ %p %d %p %p %d }", \
(f), (a), (a)->tags, (a)->num_tags, (a)->baggage, (a)->log_fields, (a)->num_log_fields)
#define FLT_OT_DBG_RUNTIME_CONTEXT(f,a) \
FLT_OT_DBG(3, "%s%p:{ %p %p '%s' %hhu %hhu 0x%02hhx 0x%08x %s %s }", \
(f), (a), (a)->stream, (a)->filter, (a)->uuid, (a)->flag_harderr, \
(a)->flag_disabled, (a)->logging, (a)->analyzers, flt_ot_list_debug(&((a)->spans)), \
flt_ot_list_debug(&((a)->contexts)))
#define FLT_OT_CONST_STR_HDR(a) \
struct { \
const char *a; \
size_t a##_len; \
}
struct flt_ot_scope_data {
struct otc_tag tags[FLT_OT_MAXTAGS]; /* Defined tags. */
int num_tags; /* The number of tags used. */
struct otc_text_map *baggage; /* Defined baggage. */
struct otc_log_field log_fields[OTC_MAXLOGFIELDS]; /* Defined logs. */
int num_log_fields; /* The number of log fields used. */
};
/* flt_ot_runtime_context->spans */
struct flt_ot_scope_span {
FLT_OT_CONST_STR_HDR(id); /* The span operation name/len. */
uint smp_opt_dir; /* SMP_OPT_DIR_RE(Q|S) */
bool flag_finish; /* Whether the span is marked for completion. */
struct otc_span *span; /* The current span. */
otc_span_reference_type_t ref_type; /* Span reference type. */
struct otc_span *ref_span; /* Span to which the current span refers. */
struct otc_span_context *ref_ctx; /* Span context to which the current span refers. */
struct list list; /* Used to chain this structure. */
};
/* flt_ot_runtime_context->contexts */
struct flt_ot_scope_context {
FLT_OT_CONST_STR_HDR(id); /* The span context name/len. */
uint smp_opt_dir; /* SMP_OPT_DIR_RE(Q|S) */
bool flag_finish; /* Whether the span context is marked for completion. */
struct otc_span_context *context; /* The current span context. */
struct list list; /* Used to chain this structure. */
};
/* The runtime filter context attached to a stream. */
struct flt_ot_runtime_context {
struct stream *stream; /* The stream to which the filter is attached. */
struct filter *filter; /* The OpenTracing filter. */
char uuid[40]; /* Randomly generated UUID. */
bool flag_harderr; /* [0 1] */
bool flag_disabled; /* [0 1] */
uint8_t logging; /* [0 1 3] */
uint analyzers; /* Executed channel analyzers. */
struct list spans; /* The scope spans. */
struct list contexts; /* The scope contexts. */
};
#ifndef DEBUG_OT
# define flt_ot_pools_info() while (0)
#else
void flt_ot_pools_info(void);
#endif
struct flt_ot_runtime_context *flt_ot_runtime_context_init(struct stream *s, struct filter *f, char **err);
void flt_ot_runtime_context_free(struct filter *f);
struct flt_ot_scope_span *flt_ot_scope_span_init(struct flt_ot_runtime_context *rt_ctx, const char *id, size_t id_len, otc_span_reference_type_t ref_type, const char *ref_id, size_t ref_id_len, uint dir, char **err);
void flt_ot_scope_span_free(struct flt_ot_scope_span **ptr);
struct flt_ot_scope_context *flt_ot_scope_context_init(struct flt_ot_runtime_context *rt_ctx, struct otc_tracer *tracer, const char *id, size_t id_len, const struct otc_text_map *text_map, uint dir, char **err);
void flt_ot_scope_context_free(struct flt_ot_scope_context **ptr);
void flt_ot_scope_data_free(struct flt_ot_scope_data *ptr);
int flt_ot_scope_finish_mark(const struct flt_ot_runtime_context *rt_ctx, const char *id, size_t id_len);
void flt_ot_scope_finish_marked(const struct flt_ot_runtime_context *rt_ctx, const struct timespec *ts_finish);
void flt_ot_scope_free_unused(struct flt_ot_runtime_context *rt_ctx, struct channel *chn);
#endif /* _OPENTRACING_SCOPE_H_ */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*
* vi: noexpandtab shiftwidth=8 tabstop=8
*/
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