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68 lines
2.5 KiB
Protocol Buffer
68 lines
2.5 KiB
Protocol Buffer
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// Copyright 2019, OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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syntax = "proto3";
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package opentelemetry;
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option csharp_namespace = "OpenTelemetry.Proto.Common.V1";
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option java_multiple_files = true;
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option java_package = "io.opentelemetry.proto.common.v1";
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option java_outer_classname = "CommonProto";
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option go_package = "opentelemetry/pb";
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// AnyValue is used to represent any type of attribute value. AnyValue may contain a
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// primitive value such as a string or integer or it may contain an arbitrary nested
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// object containing arrays, key-value lists and primitives.
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message AnyValue {
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// The value is one of the listed fields. It is valid for all values to be unspecified
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// in which case this AnyValue is considered to be "empty".
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oneof value {
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string string_value = 1;
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bool bool_value = 2;
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int64 int_value = 3;
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double double_value = 4;
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ArrayValue array_value = 5;
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KeyValueList kvlist_value = 6;
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bytes bytes_value = 7;
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}
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}
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// ArrayValue is a list of AnyValue messages. We need ArrayValue as a message
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// since oneof in AnyValue does not allow repeated fields.
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message ArrayValue {
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// Array of values. The array may be empty (contain 0 elements).
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repeated AnyValue values = 1;
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}
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// KeyValueList is a list of KeyValue messages. We need KeyValueList as a message
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// since `oneof` in AnyValue does not allow repeated fields. Everywhere else where we need
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// a list of KeyValue messages (e.g. in Span) we use `repeated KeyValue` directly to
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// avoid unnecessary extra wrapping (which slows down the protocol). The 2 approaches
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// are semantically equivalent.
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message KeyValueList {
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// A collection of key/value pairs of key-value pairs. The list may be empty (may
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// contain 0 elements).
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// The keys MUST be unique (it is not allowed to have more than one
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// value with the same key).
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repeated KeyValue values = 1;
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}
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// KeyValue is a key-value pair that is used to store Span attributes, Link
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// attributes, etc.
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message KeyValue {
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string key = 1;
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AnyValue value = 2;
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}
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