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a75f3404c8
To avoid duplicate source code, the original haproxy function is used to generate the OpenTracing runtime context UUID. Also, the structure flt_ot_runtime_context is simplified because the detailed definition of UUID is removed from it (struct flt_ot_uuid), ie the UUID is left only in the form of a string.
127 lines
6.1 KiB
C
127 lines
6.1 KiB
C
/***
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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_SCOPE_H_
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#define _OPENTRACING_SCOPE_H_
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#define FLT_OT_SCOPE_SPAN_FINISH_REQ "*req*"
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#define FLT_OT_SCOPE_SPAN_FINISH_RES "*res*"
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#define FLT_OT_SCOPE_SPAN_FINISH_ALL "*"
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#define FLT_OT_RT_CTX(a) ((struct flt_ot_runtime_context *)(a))
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#define FLT_OT_DBG_SCOPE_SPAN(f,a) \
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FLT_OT_DBG(3, "%s%p:{ '%s' %zu %u %hhu %p %d %p %p }", \
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(f), (a), FLT_OT_STR_HDR_ARGS(a, id), (a)->smp_opt_dir, \
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(a)->flag_finish, (a)->span, (a)->ref_type, (a)->ref_span, (a)->ref_ctx)
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#define FLT_OT_DBG_SCOPE_CONTEXT(f,a) \
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FLT_OT_DBG(3, "%s%p:{ '%s' %zu %u %hhu %p }", \
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(f), (a), FLT_OT_STR_HDR_ARGS(a, id), (a)->smp_opt_dir, \
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(a)->flag_finish, (a)->context)
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#define FLT_OT_DBG_SCOPE_DATA(f,a) \
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FLT_OT_DBG(3, "%s%p:{ %p %d %p %p %d }", \
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(f), (a), (a)->tags, (a)->num_tags, (a)->baggage, (a)->log_fields, (a)->num_log_fields)
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#define FLT_OT_DBG_RUNTIME_CONTEXT(f,a) \
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FLT_OT_DBG(3, "%s%p:{ %p %p '%s' %hhu %hhu 0x%02hhx 0x%08x %s %s }", \
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(f), (a), (a)->stream, (a)->filter, (a)->uuid, (a)->flag_harderr, \
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(a)->flag_disabled, (a)->logging, (a)->analyzers, flt_ot_list_debug(&((a)->spans)), \
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flt_ot_list_debug(&((a)->contexts)))
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#define FLT_OT_CONST_STR_HDR(a) \
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struct { \
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const char *a; \
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size_t a##_len; \
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}
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struct flt_ot_scope_data {
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struct otc_tag tags[FLT_OT_MAXTAGS]; /* Defined tags. */
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int num_tags; /* The number of tags used. */
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struct otc_text_map *baggage; /* Defined baggage. */
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struct otc_log_field log_fields[OTC_MAXLOGFIELDS]; /* Defined logs. */
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int num_log_fields; /* The number of log fields used. */
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};
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/* flt_ot_runtime_context->spans */
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struct flt_ot_scope_span {
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FLT_OT_CONST_STR_HDR(id); /* The span operation name/len. */
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uint smp_opt_dir; /* SMP_OPT_DIR_RE(Q|S) */
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bool flag_finish; /* Whether the span is marked for completion. */
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struct otc_span *span; /* The current span. */
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otc_span_reference_type_t ref_type; /* Span reference type. */
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struct otc_span *ref_span; /* Span to which the current span refers. */
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struct otc_span_context *ref_ctx; /* Span context to which the current span refers. */
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struct list list; /* Used to chain this structure. */
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};
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/* flt_ot_runtime_context->contexts */
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struct flt_ot_scope_context {
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FLT_OT_CONST_STR_HDR(id); /* The span context name/len. */
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uint smp_opt_dir; /* SMP_OPT_DIR_RE(Q|S) */
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bool flag_finish; /* Whether the span context is marked for completion. */
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struct otc_span_context *context; /* The current span context. */
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struct list list; /* Used to chain this structure. */
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};
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/* The runtime filter context attached to a stream. */
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struct flt_ot_runtime_context {
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struct stream *stream; /* The stream to which the filter is attached. */
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struct filter *filter; /* The OpenTracing filter. */
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char uuid[40]; /* Randomly generated UUID. */
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bool flag_harderr; /* [0 1] */
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bool flag_disabled; /* [0 1] */
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uint8_t logging; /* [0 1 3] */
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uint analyzers; /* Executed channel analyzers. */
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struct list spans; /* The scope spans. */
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struct list contexts; /* The scope contexts. */
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};
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#ifndef DEBUG_OT
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# define flt_ot_pools_info() while (0)
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#else
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void flt_ot_pools_info(void);
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#endif
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struct flt_ot_runtime_context *flt_ot_runtime_context_init(struct stream *s, struct filter *f, char **err);
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void flt_ot_runtime_context_free(struct filter *f);
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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);
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void flt_ot_scope_span_free(struct flt_ot_scope_span **ptr);
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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);
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void flt_ot_scope_context_free(struct flt_ot_scope_context **ptr);
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void flt_ot_scope_data_free(struct flt_ot_scope_data *ptr);
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int flt_ot_scope_finish_mark(const struct flt_ot_runtime_context *rt_ctx, const char *id, size_t id_len);
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void flt_ot_scope_finish_marked(const struct flt_ot_runtime_context *rt_ctx, const struct timespec *ts_finish);
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void flt_ot_scope_free_unused(struct flt_ot_runtime_context *rt_ctx, struct channel *chn);
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#endif /* _OPENTRACING_SCOPE_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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