Merge pull request #5013 from a-veitch/tag_set_to_context
Change all instances of census_tag_set to census_contextpull/5075/head
Bogdan Drutu
9 years ago
commit
e4fdcd9242
28 changed files with 960 additions and 1134 deletions
@ -1,47 +0,0 @@ |
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/*
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* |
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* Copyright 2015, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#ifndef GRPC_INTERNAL_CORE_CENSUS_CONTEXT_H |
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#define GRPC_INTERNAL_CORE_CENSUS_CONTEXT_H |
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#include <grpc/census.h> |
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#define GRPC_CENSUS_MAX_ON_THE_WIRE_TAG_BYTES 2048 |
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/* census_context is the in-memory representation of information needed to
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* maintain tracing, RPC statistics and resource usage information. */ |
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struct census_context { |
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census_tag_set *tags; /* Opaque data structure for census tags. */ |
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}; |
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#endif /* GRPC_INTERNAL_CORE_CENSUS_CONTEXT_H */ |
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@ -1,535 +0,0 @@ |
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/*
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* |
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* Copyright 2015-2016, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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#include <grpc/census.h> |
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#include <grpc/support/alloc.h> |
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#include <grpc/support/log.h> |
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#include <grpc/support/port_platform.h> |
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#include <grpc/support/useful.h> |
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#include <stdbool.h> |
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#include <string.h> |
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#include "src/core/support/string.h" |
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// Functions in this file support the public tag_set API, as well as
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// encoding/decoding tag_sets as part of context propagation across
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// RPC's. The overall requirements (in approximate priority order) for the
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// tag_set representations:
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// 1. Efficient conversion to/from wire format
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// 2. Minimal bytes used on-wire
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// 3. Efficient tag set creation
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// 4. Efficient lookup of value for a key
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// 5. Efficient lookup of value for an index (to support iteration)
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// 6. Minimal memory footprint
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//
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// Notes on tradeoffs/decisions:
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// * tag includes 1 byte length of key, as well as nil-terminating byte. These
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// are to aid in efficient parsing and the ability to directly return key
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// strings. This is more important than saving a single byte/tag on the wire.
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// * The wire encoding uses only single byte values. This eliminates the need
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// to handle endian-ness conversions. It also means there is a hard upper
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// limit of 255 for both CENSUS_MAX_TAG_KV_LEN and CENSUS_MAX_PROPAGATED_TAGS.
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// * Keep all tag information (keys/values/flags) in a single memory buffer,
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// that can be directly copied to the wire.14
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// * Binary tags share the same structure as, but are encoded separately from,
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// non-binary tags. This is primarily because non-binary tags are far more
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// likely to be repeated across multiple RPC calls, so are more efficiently
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// cached and compressed in any metadata schemes.
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// * all lengths etc. are restricted to one byte. This eliminates endian
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// issues.
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// Structure representing a set of tags. Essentially a count of number of tags
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// present, and pointer to a chunk of memory that contains the per-tag details.
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struct tag_set { |
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int ntags; // number of tags.
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int ntags_alloc; // ntags + number of deleted tags (total number of tags
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// in all of kvm). This will always be == ntags, except during the process
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// of building a new tag set.
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size_t kvm_size; // number of bytes allocated for key/value storage.
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size_t kvm_used; // number of bytes of used key/value memory
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char *kvm; // key/value memory. Consists of repeated entries of:
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// Offset Size Description
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// 0 1 Key length, including trailing 0. (K)
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// 1 1 Value length. (V)
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// 2 1 Flags
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// 3 K Key bytes
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// 3 + K V Value bytes
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//
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// We refer to the first 3 entries as the 'tag header'. If extra values are
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// introduced in the header, you will need to modify the TAG_HEADER_SIZE
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// constant, the raw_tag structure (and everything that uses it) and the
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// encode/decode functions appropriately.
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}; |
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// Number of bytes in tag header.
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#define TAG_HEADER_SIZE 3 // key length (1) + value length (1) + flags (1)
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// Offsets to tag header entries.
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#define KEY_LEN_OFFSET 0 |
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#define VALUE_LEN_OFFSET 1 |
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#define FLAG_OFFSET 2 |
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// raw_tag represents the raw-storage form of a tag in the kvm of a tag_set.
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struct raw_tag { |
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uint8_t key_len; |
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uint8_t value_len; |
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uint8_t flags; |
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char *key; |
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char *value; |
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}; |
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// Use a reserved flag bit for indication of deleted tag.
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#define CENSUS_TAG_DELETED CENSUS_TAG_RESERVED |
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#define CENSUS_TAG_IS_DELETED(flags) (flags & CENSUS_TAG_DELETED) |
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// Primary (external) representation of a tag set. Composed of 3 underlying
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// tag_set structs, one for each of the binary/printable propagated tags, and
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// one for everything else. This is to efficiently support tag
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// encoding/decoding.
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struct census_tag_set { |
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struct tag_set tags[3]; |
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census_tag_set_create_status status; |
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}; |
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// Indices into the tags member of census_tag_set
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#define PROPAGATED_TAGS 0 |
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#define PROPAGATED_BINARY_TAGS 1 |
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#define LOCAL_TAGS 2 |
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// Extract a raw tag given a pointer (raw) to the tag header. Allow for some
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// extra bytes in the tag header (see encode/decode functions for usage: this
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// allows for future expansion of the tag header).
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static char *decode_tag(struct raw_tag *tag, char *header, int offset) { |
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tag->key_len = (uint8_t)(*header++); |
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tag->value_len = (uint8_t)(*header++); |
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tag->flags = (uint8_t)(*header++); |
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header += offset; |
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tag->key = header; |
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header += tag->key_len; |
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tag->value = header; |
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return header + tag->value_len; |
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} |
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// Make a copy (in 'to') of an existing tag_set.
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static void tag_set_copy(struct tag_set *to, const struct tag_set *from) { |
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memcpy(to, from, sizeof(struct tag_set)); |
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to->kvm = gpr_malloc(to->kvm_size); |
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memcpy(to->kvm, from->kvm, from->kvm_used); |
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} |
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// Delete a tag from a tag_set, if it exists (returns true if it did).
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static bool tag_set_delete_tag(struct tag_set *tags, const char *key, |
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size_t key_len) { |
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char *kvp = tags->kvm; |
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for (int i = 0; i < tags->ntags_alloc; i++) { |
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uint8_t *flags = (uint8_t *)(kvp + FLAG_OFFSET); |
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struct raw_tag tag; |
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kvp = decode_tag(&tag, kvp, 0); |
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if (CENSUS_TAG_IS_DELETED(tag.flags)) continue; |
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if ((key_len == tag.key_len) && (memcmp(key, tag.key, key_len) == 0)) { |
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*flags |= CENSUS_TAG_DELETED; |
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tags->ntags--; |
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return true; |
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} |
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} |
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return false; |
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} |
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// Delete a tag from a census_tag_set, return true if it existed.
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static bool cts_delete_tag(census_tag_set *tags, const census_tag *tag, |
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size_t key_len) { |
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return (tag_set_delete_tag(&tags->tags[LOCAL_TAGS], tag->key, key_len) || |
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tag_set_delete_tag(&tags->tags[PROPAGATED_TAGS], tag->key, key_len) || |
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tag_set_delete_tag(&tags->tags[PROPAGATED_BINARY_TAGS], tag->key, |
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key_len)); |
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} |
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// Add a tag to a tag_set. Return true on sucess, false if the tag could
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// not be added because of constraints on tag set size. This function should
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// not be called if the tag may already exist (in a non-deleted state) in
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// the tag_set, as that would result in two tags with the same key.
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static bool tag_set_add_tag(struct tag_set *tags, const census_tag *tag, |
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size_t key_len) { |
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if (tags->ntags == CENSUS_MAX_PROPAGATED_TAGS) { |
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return false; |
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} |
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const size_t tag_size = key_len + tag->value_len + TAG_HEADER_SIZE; |
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if (tags->kvm_used + tag_size > tags->kvm_size) { |
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// allocate new memory if needed
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tags->kvm_size += 2 * CENSUS_MAX_TAG_KV_LEN + TAG_HEADER_SIZE; |
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char *new_kvm = gpr_malloc(tags->kvm_size); |
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memcpy(new_kvm, tags->kvm, tags->kvm_used); |
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gpr_free(tags->kvm); |
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tags->kvm = new_kvm; |
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} |
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char *kvp = tags->kvm + tags->kvm_used; |
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*kvp++ = (char)key_len; |
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*kvp++ = (char)tag->value_len; |
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// ensure reserved flags are not used.
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*kvp++ = (char)(tag->flags & (CENSUS_TAG_PROPAGATE | CENSUS_TAG_STATS | |
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CENSUS_TAG_BINARY)); |
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memcpy(kvp, tag->key, key_len); |
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kvp += key_len; |
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memcpy(kvp, tag->value, tag->value_len); |
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tags->kvm_used += tag_size; |
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tags->ntags++; |
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tags->ntags_alloc++; |
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return true; |
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} |
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// Add/modify/delete a tag to/in a census_tag_set. Caller must validate that
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// tag key etc. are valid.
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static void cts_modify_tag(census_tag_set *tags, const census_tag *tag, |
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size_t key_len) { |
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// First delete the tag if it is already present.
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bool deleted = cts_delete_tag(tags, tag, key_len); |
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// Determine if we need to add it back.
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bool call_add = tag->value != NULL && tag->value_len != 0; |
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bool added = false; |
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if (call_add) { |
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if (CENSUS_TAG_IS_PROPAGATED(tag->flags)) { |
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if (CENSUS_TAG_IS_BINARY(tag->flags)) { |
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added = |
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tag_set_add_tag(&tags->tags[PROPAGATED_BINARY_TAGS], tag, key_len); |
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} else { |
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added = tag_set_add_tag(&tags->tags[PROPAGATED_TAGS], tag, key_len); |
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} |
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} else { |
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added = tag_set_add_tag(&tags->tags[LOCAL_TAGS], tag, key_len); |
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} |
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} |
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if (deleted) { |
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if (call_add) { |
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tags->status.n_modified_tags++; |
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} else { |
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tags->status.n_deleted_tags++; |
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} |
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} else { |
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if (added) { |
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tags->status.n_added_tags++; |
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} else { |
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tags->status.n_ignored_tags++; |
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} |
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} |
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} |
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// Remove memory used for deleted tags from the tag set. Basic algorithm:
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// 1) Walk through tag set to find first deleted tag. Record where it is.
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// 2) Find the next not-deleted tag. Copy all of kvm from there to the end
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// "over" the deleted tags
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// 3) repeat #1 and #2 until we have seen all tags
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// 4) if we are still looking for a not-deleted tag, then all the end portion
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// of the kvm is deleted. Just reduce the used amount of memory by the
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// appropriate amount.
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static void tag_set_flatten(struct tag_set *tags) { |
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if (tags->ntags == tags->ntags_alloc) return; |
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bool found_deleted = false; // found a deleted tag.
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char *kvp = tags->kvm; |
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char *dbase = NULL; // record location of deleted tag
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for (int i = 0; i < tags->ntags_alloc; i++) { |
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struct raw_tag tag; |
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char *next_kvp = decode_tag(&tag, kvp, 0); |
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if (found_deleted) { |
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if (!CENSUS_TAG_IS_DELETED(tag.flags)) { |
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ptrdiff_t reduce = kvp - dbase; // #bytes in deleted tags
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GPR_ASSERT(reduce > 0); |
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ptrdiff_t copy_size = tags->kvm + tags->kvm_used - kvp; |
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GPR_ASSERT(copy_size > 0); |
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memmove(dbase, kvp, (size_t)copy_size); |
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tags->kvm_used -= (size_t)reduce; |
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next_kvp -= reduce; |
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found_deleted = false; |
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} |
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} else { |
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if (CENSUS_TAG_IS_DELETED(tag.flags)) { |
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dbase = kvp; |
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found_deleted = true; |
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} |
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} |
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kvp = next_kvp; |
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} |
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if (found_deleted) { |
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GPR_ASSERT(dbase > tags->kvm); |
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tags->kvm_used = (size_t)(dbase - tags->kvm); |
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} |
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tags->ntags_alloc = tags->ntags; |
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} |
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census_tag_set *census_tag_set_create( |
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const census_tag_set *base, const census_tag *tags, int ntags, |
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census_tag_set_create_status const **status) { |
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census_tag_set *new_ts = gpr_malloc(sizeof(census_tag_set)); |
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// If we are given a base, copy it into our new tag set. Otherwise set it
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// to zero/NULL everything.
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if (base == NULL) { |
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memset(new_ts, 0, sizeof(census_tag_set)); |
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} else { |
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tag_set_copy(&new_ts->tags[PROPAGATED_TAGS], &base->tags[PROPAGATED_TAGS]); |
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tag_set_copy(&new_ts->tags[PROPAGATED_BINARY_TAGS], |
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&base->tags[PROPAGATED_BINARY_TAGS]); |
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tag_set_copy(&new_ts->tags[LOCAL_TAGS], &base->tags[LOCAL_TAGS]); |
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memset(&new_ts->status, 0, sizeof(new_ts->status)); |
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} |
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// Walk over the additional tags and, for those that aren't invalid, modify
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// the tag set to add/replace/delete as required.
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for (int i = 0; i < ntags; i++) { |
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const census_tag *tag = &tags[i]; |
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size_t key_len = strlen(tag->key) + 1; |
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// ignore the tag if it is too long/short.
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if (key_len != 1 && key_len <= CENSUS_MAX_TAG_KV_LEN && |
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tag->value_len <= CENSUS_MAX_TAG_KV_LEN) { |
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cts_modify_tag(new_ts, tag, key_len); |
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} else { |
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new_ts->status.n_invalid_tags++; |
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} |
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} |
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// Remove any deleted tags, update status if needed, and return.
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tag_set_flatten(&new_ts->tags[PROPAGATED_TAGS]); |
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tag_set_flatten(&new_ts->tags[PROPAGATED_BINARY_TAGS]); |
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tag_set_flatten(&new_ts->tags[LOCAL_TAGS]); |
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new_ts->status.n_propagated_tags = new_ts->tags[PROPAGATED_TAGS].ntags; |
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new_ts->status.n_propagated_binary_tags = |
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new_ts->tags[PROPAGATED_BINARY_TAGS].ntags; |
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new_ts->status.n_local_tags = new_ts->tags[LOCAL_TAGS].ntags; |
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if (status) { |
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*status = &new_ts->status; |
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} |
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return new_ts; |
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} |
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const census_tag_set_create_status *census_tag_set_get_create_status( |
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const census_tag_set *tags) { |
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return &tags->status; |
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} |
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void census_tag_set_destroy(census_tag_set *tags) { |
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gpr_free(tags->tags[PROPAGATED_TAGS].kvm); |
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gpr_free(tags->tags[PROPAGATED_BINARY_TAGS].kvm); |
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gpr_free(tags->tags[LOCAL_TAGS].kvm); |
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gpr_free(tags); |
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} |
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// Initialize a tag set iterator. Must be called before first use of the
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// iterator.
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void census_tag_set_initialize_iterator(const census_tag_set *tags, |
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census_tag_set_iterator *iterator) { |
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iterator->tags = tags; |
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iterator->index = 0; |
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if (tags->tags[PROPAGATED_TAGS].ntags != 0) { |
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iterator->base = PROPAGATED_TAGS; |
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iterator->kvm = tags->tags[PROPAGATED_TAGS].kvm; |
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} else if (tags->tags[PROPAGATED_BINARY_TAGS].ntags != 0) { |
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iterator->base = PROPAGATED_BINARY_TAGS; |
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iterator->kvm = tags->tags[PROPAGATED_BINARY_TAGS].kvm; |
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} else if (tags->tags[LOCAL_TAGS].ntags != 0) { |
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iterator->base = LOCAL_TAGS; |
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iterator->kvm = tags->tags[LOCAL_TAGS].kvm; |
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} else { |
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iterator->base = -1; |
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} |
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} |
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|
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// Get the contents of the "next" tag in the tag set. If there are no more
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// tags in the tag set, returns 0 (and 'tag' contents will be unchanged),
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// otherwise returns 1. */
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int census_tag_set_next_tag(census_tag_set_iterator *iterator, |
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census_tag *tag) { |
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if (iterator->base < 0) { |
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return 0; |
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} |
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struct raw_tag raw; |
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iterator->kvm = decode_tag(&raw, iterator->kvm, 0); |
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tag->key = raw.key; |
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tag->value = raw.value; |
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tag->value_len = raw.value_len; |
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tag->flags = raw.flags; |
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if (++iterator->index == iterator->tags->tags[iterator->base].ntags) { |
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do { |
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if (iterator->base == LOCAL_TAGS) { |
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iterator->base = -1; |
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return 1; |
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} |
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} while (iterator->tags->tags[++iterator->base].ntags == 0); |
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iterator->index = 0; |
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iterator->kvm = iterator->tags->tags[iterator->base].kvm; |
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} |
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return 1; |
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} |
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|
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// Find a tag in a tag_set by key. Return true if found, false otherwise.
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static bool tag_set_get_tag_by_key(const struct tag_set *tags, const char *key, |
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size_t key_len, census_tag *tag) { |
||||
char *kvp = tags->kvm; |
||||
for (int i = 0; i < tags->ntags; i++) { |
||||
struct raw_tag raw; |
||||
kvp = decode_tag(&raw, kvp, 0); |
||||
if (key_len == raw.key_len && memcmp(raw.key, key, key_len) == 0) { |
||||
tag->key = raw.key; |
||||
tag->value = raw.value; |
||||
tag->value_len = raw.value_len; |
||||
tag->flags = raw.flags; |
||||
return true; |
||||
} |
||||
} |
||||
return false; |
||||
} |
||||
|
||||
int census_tag_set_get_tag_by_key(const census_tag_set *tags, const char *key, |
||||
census_tag *tag) { |
||||
size_t key_len = strlen(key) + 1; |
||||
if (key_len == 1) { |
||||
return 0; |
||||
} |
||||
if (tag_set_get_tag_by_key(&tags->tags[PROPAGATED_TAGS], key, key_len, tag) || |
||||
tag_set_get_tag_by_key(&tags->tags[PROPAGATED_BINARY_TAGS], key, key_len, |
||||
tag) || |
||||
tag_set_get_tag_by_key(&tags->tags[LOCAL_TAGS], key, key_len, tag)) { |
||||
return 1; |
||||
} |
||||
return 0; |
||||
} |
||||
|
||||
// tag_set encoding and decoding functions.
|
||||
//
|
||||
// Wire format for tag sets on the wire:
|
||||
//
|
||||
// First, a tag set header:
|
||||
//
|
||||
// offset bytes description
|
||||
// 0 1 version number
|
||||
// 1 1 number of bytes in this header. This allows for future
|
||||
// expansion.
|
||||
// 2 1 number of bytes in each tag header.
|
||||
// 3 1 ntags value from tag set.
|
||||
//
|
||||
// This is followed by the key/value memory from struct tag_set.
|
||||
|
||||
#define ENCODED_VERSION 0 // Version number
|
||||
#define ENCODED_HEADER_SIZE 4 // size of tag set header
|
||||
|
||||
// Encode a tag set. Returns 0 if buffer is too small.
|
||||
static size_t tag_set_encode(const struct tag_set *tags, char *buffer, |
||||
size_t buf_size) { |
||||
if (buf_size < ENCODED_HEADER_SIZE + tags->kvm_used) { |
||||
return 0; |
||||
} |
||||
buf_size -= ENCODED_HEADER_SIZE; |
||||
*buffer++ = (char)ENCODED_VERSION; |
||||
*buffer++ = (char)ENCODED_HEADER_SIZE; |
||||
*buffer++ = (char)TAG_HEADER_SIZE; |
||||
*buffer++ = (char)tags->ntags; |
||||
if (tags->ntags == 0) { |
||||
return ENCODED_HEADER_SIZE; |
||||
} |
||||
memcpy(buffer, tags->kvm, tags->kvm_used); |
||||
return ENCODED_HEADER_SIZE + tags->kvm_used; |
||||
} |
||||
|
||||
char *census_tag_set_encode(const census_tag_set *tags, char *buffer, |
||||
size_t buf_size, size_t *print_buf_size, |
||||
size_t *bin_buf_size) { |
||||
*print_buf_size = |
||||
tag_set_encode(&tags->tags[PROPAGATED_TAGS], buffer, buf_size); |
||||
if (*print_buf_size == 0) { |
||||
return NULL; |
||||
} |
||||
char *b_buffer = buffer + *print_buf_size; |
||||
*bin_buf_size = tag_set_encode(&tags->tags[PROPAGATED_BINARY_TAGS], b_buffer, |
||||
buf_size - *print_buf_size); |
||||
if (*bin_buf_size == 0) { |
||||
return NULL; |
||||
} |
||||
return b_buffer; |
||||
} |
||||
|
||||
// Decode a tag set.
|
||||
static void tag_set_decode(struct tag_set *tags, const char *buffer, |
||||
size_t size) { |
||||
uint8_t version = (uint8_t)(*buffer++); |
||||
uint8_t header_size = (uint8_t)(*buffer++); |
||||
uint8_t tag_header_size = (uint8_t)(*buffer++); |
||||
tags->ntags = tags->ntags_alloc = (int)(*buffer++); |
||||
if (tags->ntags == 0) { |
||||
tags->ntags_alloc = 0; |
||||
tags->kvm_size = 0; |
||||
tags->kvm_used = 0; |
||||
tags->kvm = NULL; |
||||
return; |
||||
} |
||||
if (header_size != ENCODED_HEADER_SIZE) { |
||||
GPR_ASSERT(version != ENCODED_VERSION); |
||||
GPR_ASSERT(ENCODED_HEADER_SIZE < header_size); |
||||
buffer += (header_size - ENCODED_HEADER_SIZE); |
||||
} |
||||
tags->kvm_used = size - header_size; |
||||
tags->kvm_size = tags->kvm_used + CENSUS_MAX_TAG_KV_LEN; |
||||
tags->kvm = gpr_malloc(tags->kvm_size); |
||||
if (tag_header_size != TAG_HEADER_SIZE) { |
||||
// something new in the tag information. I don't understand it, so
|
||||
// don't copy it over.
|
||||
GPR_ASSERT(version != ENCODED_VERSION); |
||||
GPR_ASSERT(tag_header_size > TAG_HEADER_SIZE); |
||||
char *kvp = tags->kvm; |
||||
for (int i = 0; i < tags->ntags; i++) { |
||||
memcpy(kvp, buffer, TAG_HEADER_SIZE); |
||||
kvp += header_size; |
||||
struct raw_tag raw; |
||||
buffer = |
||||
decode_tag(&raw, (char *)buffer, tag_header_size - TAG_HEADER_SIZE); |
||||
memcpy(kvp, raw.key, (size_t)raw.key_len + raw.value_len); |
||||
kvp += raw.key_len + raw.value_len; |
||||
} |
||||
} else { |
||||
memcpy(tags->kvm, buffer, tags->kvm_used); |
||||
} |
||||
} |
||||
|
||||
census_tag_set *census_tag_set_decode(const char *buffer, size_t size, |
||||
const char *bin_buffer, size_t bin_size) { |
||||
census_tag_set *new_ts = gpr_malloc(sizeof(census_tag_set)); |
||||
memset(&new_ts->tags[LOCAL_TAGS], 0, sizeof(struct tag_set)); |
||||
if (buffer == NULL) { |
||||
memset(&new_ts->tags[PROPAGATED_TAGS], 0, sizeof(struct tag_set)); |
||||
} else { |
||||
tag_set_decode(&new_ts->tags[PROPAGATED_TAGS], buffer, size); |
||||
} |
||||
if (bin_buffer == NULL) { |
||||
memset(&new_ts->tags[PROPAGATED_BINARY_TAGS], 0, sizeof(struct tag_set)); |
||||
} else { |
||||
tag_set_decode(&new_ts->tags[PROPAGATED_BINARY_TAGS], bin_buffer, bin_size); |
||||
} |
||||
memset(&new_ts->status, 0, sizeof(new_ts->status)); |
||||
new_ts->status.n_propagated_tags = new_ts->tags[PROPAGATED_TAGS].ntags; |
||||
new_ts->status.n_propagated_binary_tags = |
||||
new_ts->tags[PROPAGATED_BINARY_TAGS].ntags; |
||||
// TODO(aveitch): check that BINARY flag is correct for each type.
|
||||
return new_ts; |
||||
} |
||||
@ -1,20 +1,20 @@ |
||||
<?xml version="1.0" encoding="utf-8"?> |
||||
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> |
||||
<ItemGroup> |
||||
<ClCompile Include="$(SolutionDir)\..\test\core\census\tag_set_test.c"> |
||||
<ClCompile Include="$(SolutionDir)\..\test\core\census\context_test.c"> |
||||
<Filter>test\core\census</Filter> |
||||
</ClCompile> |
||||
</ItemGroup> |
||||
|
||||
<ItemGroup> |
||||
<Filter Include="test"> |
||||
<UniqueIdentifier>{500aa440-5924-8047-996a-4c5096d1ef96}</UniqueIdentifier> |
||||
<UniqueIdentifier>{bc15bb31-7dbe-17f2-fb1c-4bc140ce1707}</UniqueIdentifier> |
||||
</Filter> |
||||
<Filter Include="test\core"> |
||||
<UniqueIdentifier>{a3bf80f0-5b13-f623-277b-05f0231dd933}</UniqueIdentifier> |
||||
<UniqueIdentifier>{806f9b58-6a48-ae09-3cc6-bb36e3126f27}</UniqueIdentifier> |
||||
</Filter> |
||||
<Filter Include="test\core\census"> |
||||
<UniqueIdentifier>{b6ed1b86-7795-4da9-a169-9eccf836852c}</UniqueIdentifier> |
||||
<UniqueIdentifier>{85e37a47-e797-dcd1-b1e0-df553a454d8f}</UniqueIdentifier> |
||||
</Filter> |
||||
</ItemGroup> |
||||
</Project> |
||||
Loading…
Reference in new issue