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// Copyright 2019, OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
syntax = "proto3";
package opentelemetry.proto.common.v1;
option csharp_namespace = "OpenTelemetry.Proto.Common.V1";
option java_multiple_files = true;
option java_package = "io.opentelemetry.proto.common.v1";
option java_outer_classname = "CommonProto";
option go_package = "go.opentelemetry.io/proto/otlp/common/v1";
// AnyValue is used to represent any type of attribute value. AnyValue may contain a
// primitive value such as a string or integer or it may contain an arbitrary nested
// object containing arrays, key-value lists and primitives.
message AnyValue {
// The value is one of the listed fields. It is valid for all values to be unspecified
// in which case this AnyValue is considered to be "empty".
oneof value {
string string_value = 1;
bool bool_value = 2;
int64 int_value = 3;
double double_value = 4;
ArrayValue array_value = 5;
KeyValueList kvlist_value = 6;
bytes bytes_value = 7;
}
}
// ArrayValue is a list of AnyValue messages. We need ArrayValue as a message
// since oneof in AnyValue does not allow repeated fields.
message ArrayValue {
// Array of values. The array may be empty (contain 0 elements).
repeated AnyValue values = 1;
}
// KeyValueList is a list of KeyValue messages. We need KeyValueList as a message
// since `oneof` in AnyValue does not allow repeated fields. Everywhere else where we need
// a list of KeyValue messages (e.g. in Span) we use `repeated KeyValue` directly to
// avoid unnecessary extra wrapping (which slows down the protocol). The 2 approaches
// are semantically equivalent.
message KeyValueList {
// A collection of key/value pairs of key-value pairs. The list may be empty (may
// contain 0 elements).
// The keys MUST be unique (it is not allowed to have more than one
// value with the same key).
repeated KeyValue values = 1;
}
// KeyValue is a key-value pair that is used to store Span attributes, Link
// attributes, etc.
message KeyValue {
string key = 1;
AnyValue value = 2;
}
// InstrumentationScope is a message representing the instrumentation scope information
// such as the fully qualified name and version.
message InstrumentationScope {
// An empty instrumentation scope name means the name is unknown.
string name = 1;
string version = 2;
// Additional attributes that describe the scope. [Optional].
// Attribute keys MUST be unique (it is not allowed to have more than one
// attribute with the same key).
repeated KeyValue attributes = 3;
uint32 dropped_attributes_count = 4;
}
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