com.undefinedlabs.scope.rules.propagation.carriers.URLConnectionInjectAdapter Maven / Gradle / Ivy

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package com.undefinedlabs.scope.rules.propagation.carriers;

import io.opentracing.propagation.TextMap;
import com.undefinedlabs.scope.deps.org.apache.commons.lang3.StringUtils;

import java.net.URLConnection;
import java.util.Iterator;
import java.util.Map;

public class URLConnectionInjectAdapter implements TextMap {

    private final URLConnection urlConnection;

    public URLConnectionInjectAdapter(final URLConnection urlConnection) {
        this.urlConnection = urlConnection;
    }

    @Override
    public Iterator> iterator() {
        throw new UnsupportedOperationException("Should be used only with tracer#inject()");
    }

    @Override
    public void put(String key, String value) {
        if (StringUtils.isNotEmpty(value)) {
            this.urlConnection.setRequestProperty(key, value);
        }
    }
}