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The Decorator Desing Pattern

Pragya Keshap answered on February 28, 2023 Popularity 5/10 Helpfulness 1/10

answer The Decorator Desing Pattern

The Decorator Desing Pattern

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public class ZipkinSpanHandlerDecorator extends SpanHandler {

    private final SpanHandler spanHandler;
    private final Set<String> notAllowedSpanNames;

    public ZipkinSpanHandlerDecorator(SpanHandler spanHandler, Set<String> notAllowedSpanNames) {
        this.spanHandler = spanHandler;
        this.notAllowedSpanNames = notAllowedSpanNames;
    }

    @Override
    public boolean begin(TraceContext context, MutableSpan span, TraceContext parent) {
        return spanHandler.begin(context, span, parent);
    }

    @Override
    public boolean end(TraceContext context, MutableSpan span, Cause cause) {
        if (containsNotAllowedName(span)) {
            return false;
        }
        return spanHandler.end(context, span, cause);
    }

    @Override
    public boolean handlesAbandoned() {
        return spanHandler.handlesAbandoned();
    }

    private boolean containsNotAllowedName(MutableSpan span) {
        if (CollectionUtils.isEmpty(notAllowedSpanNames)) {
            return false;
        }
        return notAllowedSpanNames.stream()
                .anyMatch(notAllowedSpanName -> notAllowedSpanName.equalsIgnoreCase(span.name()));
    }
}

Popularity 5/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: decorator java

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Contributed on Feb 28 2023

Pragya Keshap

0 Answers Avg Quality 2/10

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