io.opencensus.contrib.http.HttpRequestContext Maven / Gradle / Ivy
/*
* Copyright 2018, OpenCensus 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.opencensus.contrib.http;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.annotations.VisibleForTesting;
import io.opencensus.common.ExperimentalApi;
import io.opencensus.tags.TagContext;
import io.opencensus.tags.TagMetadata;
import io.opencensus.tags.TagMetadata.TagTtl;
import io.opencensus.trace.Span;
import java.util.concurrent.atomic.AtomicLong;
/**
* This class provides storage per request context on http client and server.
*
* @since 0.19
*/
@ExperimentalApi
public class HttpRequestContext {
@VisibleForTesting static final long INVALID_STARTTIME = -1;
static final TagMetadata METADATA_NO_PROPAGATION = TagMetadata.create(TagTtl.NO_PROPAGATION);
@VisibleForTesting final long requestStartTime;
@VisibleForTesting final Span span;
@VisibleForTesting AtomicLong sentMessageSize = new AtomicLong();
@VisibleForTesting AtomicLong receiveMessageSize = new AtomicLong();
@VisibleForTesting AtomicLong sentSeqId = new AtomicLong();
@VisibleForTesting AtomicLong receviedSeqId = new AtomicLong();
@VisibleForTesting final TagContext tagContext;
HttpRequestContext(Span span, TagContext tagContext) {
checkNotNull(span, "span");
checkNotNull(tagContext, "tagContext");
this.span = span;
this.tagContext = tagContext;
requestStartTime = System.nanoTime();
}
}