io.opentracing.contrib.elasticsearch.common.SpanDecorator.java Source code

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Here is the source code for io.opentracing.contrib.elasticsearch.common.SpanDecorator.java

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/*
 * Copyright 2017-2018 The OpenTracing 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.opentracing.contrib.elasticsearch.common;

import io.opentracing.Span;
import io.opentracing.tag.Tags;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.Map;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;

public class SpanDecorator {

    public static final String COMPONENT_NAME = "java-elasticsearch";

    public static void onRequest(Span span) {
        Tags.COMPONENT.set(span, COMPONENT_NAME);
    }

    public static void onRequest(HttpRequest request, Span span) {
        Tags.COMPONENT.set(span, COMPONENT_NAME);
        Tags.HTTP_METHOD.set(span, request.getRequestLine().getMethod());
        Tags.HTTP_URL.set(span, request.getRequestLine().getUri());
    }

    public static void onResponse(HttpResponse response, Span span) {
        Tags.HTTP_STATUS.set(span, response.getStatusLine().getStatusCode());
    }

    public static void onError(Throwable throwable, Span span) {
        Tags.ERROR.set(span, Boolean.TRUE);
        span.log(errorLogs(throwable));
    }

    private static Map<String, Object> errorLogs(Throwable throwable) {
        Map<String, Object> errorLogs = new HashMap<>(4);
        errorLogs.put("event", Tags.ERROR.getKey());
        errorLogs.put("error.kind", throwable.getClass().getName());
        errorLogs.put("error.object", throwable);

        errorLogs.put("message", throwable.getMessage());

        StringWriter sw = new StringWriter();
        throwable.printStackTrace(new PrintWriter(sw));
        errorLogs.put("stack", sw.toString());

        return errorLogs;
    }
}