Examples with DynamicSegmentNamingStrategy com.amazonaws.xray.strategy.DynamicSegmentNamingStrategy used on opensource projects

Example 1 with DynamicSegmentNamingStrategy

use of com.amazonaws.xray.strategy.DynamicSegmentNamingStrategy in project aws-xray-sdk-java by aws.

the class AWSXRayServletAsyncListener method init.

/**
 * @param config
 *  the filter configuration. There are various init-params which may be passed on initialization. The values in init-params will create segment naming strategies which override those passed in constructors.
 *
 * <ul>
 *
 * <li>
 * <b>fixedName</b> A String value used as the fixedName parameter for a created {@link com.amazonaws.xray.strategy.FixedSegmentNamingStrategy}. Used only if the {@code dynamicNamingFallbackName} init-param is not set.
 * </li>
 *
 * <li>
 * <b>dynamicNamingFallbackName</b> A String value used as the fallbackName parameter for a created {@link com.amazonaws.xray.strategy.DynamicSegmentNamingStrategy}.
 * </li>
 *
 * <li>
 * <b>dynamicNamingRecognizedHosts</b> A String value used as the recognizedHosts parameter for a created {@link com.amazonaws.xray.strategy.DynamicSegmentNamingStrategy}.
 * </li>
 *
 * </ul>
 *
 * @throws ServletException
 *  when a segment naming strategy is not provided in constructor arguments nor in init-params.
 */
@Override
public void init(FilterConfig config) throws ServletException {
    String fixedName = config.getInitParameter("fixedName");
    String dynamicNamingFallbackName = config.getInitParameter("dynamicNamingFallbackName");
    String dynamicNamingRecognizedHosts = config.getInitParameter("dynamicNamingRecognizedHosts");
    if (StringValidator.isNotNullOrBlank(dynamicNamingFallbackName)) {
        if (StringValidator.isNotNullOrBlank(dynamicNamingRecognizedHosts)) {
            segmentNamingStrategy = new DynamicSegmentNamingStrategy(dynamicNamingFallbackName, dynamicNamingRecognizedHosts);
        } else {
            segmentNamingStrategy = new DynamicSegmentNamingStrategy(dynamicNamingFallbackName);
        }
    } else if (StringValidator.isNotNullOrBlank(fixedName)) {
        segmentNamingStrategy = new FixedSegmentNamingStrategy(fixedName);
    } else if (null == segmentNamingStrategy) {
        throw new ServletException("The AWSXRayServletFilter requires either a fixedName init-param or an instance of SegmentNamingStrategy. Add an init-param tag to the AWSXRayServletFilter's declaration in web.xml, using param-name: 'fixedName'. Alternatively, pass an instance of SegmentNamingStrategy to the AWSXRayServletFilter constructor.");
    }
}

Example 2 with DynamicSegmentNamingStrategy

use of com.amazonaws.xray.strategy.DynamicSegmentNamingStrategy in project aws-xray-sdk-java by aws.

the class AWSXRayServletFilter method init.

/**
 * @param config
 *  the filter configuration. There are various init-params which may be passed on initialization. The values in init-params
 *  will create segment naming strategies which override those passed in constructors.
 *
 * <ul>
 *
 * <li>
 * <b>fixedName</b> A String value used as the fixedName parameter for a created
 * {@link com.amazonaws.xray.strategy.FixedSegmentNamingStrategy}. Used only if the {@code dynamicNamingFallbackName}
 * init-param is not set.
 * </li>
 *
 * <li>
 * <b>dynamicNamingFallbackName</b> A String value used as the fallbackName parameter for a created
 * {@link com.amazonaws.xray.strategy.DynamicSegmentNamingStrategy}.
 * </li>
 *
 * <li>
 * <b>dynamicNamingRecognizedHosts</b> A String value used as the recognizedHosts parameter for a created
 * {@link com.amazonaws.xray.strategy.DynamicSegmentNamingStrategy}.
 * </li>
 *
 * </ul>
 *
 * @throws ServletException
 *  when a segment naming strategy is not provided in constructor arguments nor in init-params.
 */
@Override
public void init(FilterConfig config) throws ServletException {
    String fixedName = config.getInitParameter("fixedName");
    String dynamicNamingFallbackName = config.getInitParameter("dynamicNamingFallbackName");
    String dynamicNamingRecognizedHosts = config.getInitParameter("dynamicNamingRecognizedHosts");
    if (StringValidator.isNotNullOrBlank(dynamicNamingFallbackName)) {
        if (StringValidator.isNotNullOrBlank(dynamicNamingRecognizedHosts)) {
            segmentNamingStrategy = new DynamicSegmentNamingStrategy(dynamicNamingFallbackName, dynamicNamingRecognizedHosts);
        } else {
            segmentNamingStrategy = new DynamicSegmentNamingStrategy(dynamicNamingFallbackName);
        }
    } else if (StringValidator.isNotNullOrBlank(fixedName)) {
        segmentNamingStrategy = new FixedSegmentNamingStrategy(fixedName);
    } else if (null == segmentNamingStrategy) {
        throw new ServletException("The AWSXRayServletFilter requires either a fixedName init-param or an instance of SegmentNamingStrategy. " + "Add an init-param tag to the AWSXRayServletFilter's declaration in web.xml, using param-name: 'fixedName'. " + "Alternatively, pass an instance of SegmentNamingStrategy to the AWSXRayServletFilter constructor.");
    }
}