| /* |
| * Licensed to the 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. |
| * The 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 io.opentracing; |
| |
| import io.opentracing.propagation.Format; |
| |
| public interface Tracer { |
| |
| /** |
| * @return current {@link ScopeManager}. |
| */ |
| ScopeManager scopeManager(); |
| |
| /** |
| * @return current {@link Span}. |
| */ |
| Span activeSpan(); |
| |
| /** |
| * @return a new span builder. |
| */ |
| SpanBuilder buildSpan(String operationName); |
| |
| /** |
| * Inject a span context into a carrier. |
| */ |
| <C> void inject(SpanContext spanContext, Format<C> format, C carrier); |
| |
| /** |
| * @return the span context from the carrier. |
| */ |
| <C> SpanContext extract(Format<C> format, C carrier); |
| |
| interface SpanBuilder { |
| |
| /** |
| * @return this span builder after having added CHILD_OFF reference. |
| */ |
| SpanBuilder asChildOf(SpanContext parent); |
| |
| /** |
| * @return this span builder after having added CHILD_OFF reference from the parent. |
| */ |
| SpanBuilder asChildOf(Span parent); |
| |
| /** |
| * @return this span builder after having added a reference. |
| */ |
| SpanBuilder addReference(String referenceType, SpanContext referencedContext); |
| |
| /** |
| * @return this span builder flag to ignore implicit CHILD_OFF reference. |
| */ |
| SpanBuilder ignoreActiveSpan(); |
| |
| SpanBuilder withTag(String key, String value); |
| |
| SpanBuilder withTag(String key, boolean value); |
| |
| SpanBuilder withTag(String key, Number value); |
| |
| SpanBuilder withStartTimestamp(long microseconds); |
| |
| /** |
| * @return a new scope registered in the scope manager. |
| */ |
| Scope startActive(boolean finishSpanOnClose); |
| |
| /** |
| * @deprecated replaced by {@link #start} and {@link #startActive}. |
| */ |
| @Deprecated |
| Span startManual(); |
| |
| /** |
| * @return a new scope not registered in the manager. |
| */ |
| Span start(); |
| } |
| } |