// Licensed to Apache Software Foundation (ASF) under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Apache Software Foundation (ASF) licenses this file to you 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.

package operator

type TracingOperator interface {
	CreateEntrySpan(operationName string, extractor interface{}, opts ...interface{}) (s interface{}, err error)
	CreateLocalSpan(operationName string, opts ...interface{}) (s interface{}, err error)
	CreateExitSpan(operationName, peer string, injector interface{}, opts ...interface{}) (s interface{}, err error)
	// ExtractContext attaches the context carried by extractor to the current
	// active entry span as one more segment reference (batch consumers).
	ExtractContext(extractor interface{}) error
	ActiveSpan() interface{} // to Span

	GetRuntimeContextValue(key string) interface{}
	SetRuntimeContextValue(key string, value interface{})

	CaptureContext() interface{}
	ContinueContext(interface{})
	CleanContext()

	GetCorrelationContextValue(key string) string
	SetCorrelationContextValue(key, val string)
}
