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DefaultSpan.java
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DefaultSpan.java
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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.
*/
package io.opentelemetry.trace;
import io.opentelemetry.common.AttributeValue;
import io.opentelemetry.common.Attributes;
import javax.annotation.concurrent.Immutable;
/**
* The {@code DefaultSpan} is the default {@link Span} that is used when no {@code Span}
* implementation is available. All operations are no-op except context propagation.
*
* <p>Used also to stop tracing, see {@link Tracer#withSpan}.
*
* @since 0.1.0
*/
@Immutable
public final class DefaultSpan implements Span {
private static final DefaultSpan INVALID = new DefaultSpan(SpanContext.getInvalid());
/**
* Returns a {@link DefaultSpan} with an invalid {@link SpanContext}.
*
* @return a {@code DefaultSpan} with an invalid {@code SpanContext}.
* @since 0.1.0
*/
public static Span getInvalid() {
return INVALID;
}
/**
* Creates an instance of this class with the {@link SpanContext}.
*
* @param spanContext the {@code SpanContext}.
* @return a {@link DefaultSpan}.
* @since 0.1.0
*/
public static Span create(SpanContext spanContext) {
return new DefaultSpan(spanContext);
}
private final SpanContext spanContext;
DefaultSpan(SpanContext spanContext) {
this.spanContext = spanContext;
}
@Override
public void setAttribute(String key, String value) {}
@Override
public void setAttribute(String key, long value) {}
@Override
public void setAttribute(String key, double value) {}
@Override
public void setAttribute(String key, boolean value) {}
@Override
public void setAttribute(String key, AttributeValue value) {}
@Override
public void addEvent(String name) {}
@Override
public void addEvent(String name, long timestamp) {}
@Override
public void addEvent(String name, Attributes attributes) {}
@Override
public void addEvent(String name, Attributes attributes, long timestamp) {}
@Override
public void addEvent(Event event) {}
@Override
public void addEvent(Event event, long timestamp) {}
@Override
public void setStatus(Status status) {}
@Override
public void recordException(Throwable exception) {}
@Override
public void updateName(String name) {}
@Override
public void end() {}
@Override
public void end(EndSpanOptions endOptions) {}
@Override
public SpanContext getContext() {
return spanContext;
}
@Override
public boolean isRecording() {
return false;
}
@Override
public String toString() {
return "DefaultSpan";
}
}