Examples with NoopSpanContext io.opentracing.noop.NoopSpanContext used on opensource projects

Example 1 with NoopSpanContext

use of io.opentracing.noop.NoopSpanContext in project hono by eclipse.

the class TracingHelper method injectSpanContext.

/**
 * Injects a {@code SpanContext} as key-value pairs into a given operation.
 * <p>
 * This provides a generic way to serialize a span context in any kind of textual data.
 * See {@link #extractSpanContext(Tracer, Supplier)} for the corresponding method to deserialize the
 * context from that data.
 *
 * @param tracer The Tracer to use for injecting the context.
 * @param spanContext The context to inject or {@code null} if no context is available.
 * @param keyValueConsumer The operation that will receive the key-value pairs representing the context.
 * @throws NullPointerException if tracer or keyValueConsumer is {@code null}.
 */
public static void injectSpanContext(final Tracer tracer, final SpanContext spanContext, final BiConsumer<String, String> keyValueConsumer) {
    Objects.requireNonNull(tracer);
    Objects.requireNonNull(keyValueConsumer);
    if (spanContext != null && !(spanContext instanceof NoopSpanContext)) {
        tracer.inject(spanContext, Format.Builtin.TEXT_MAP, new TextMap() {

            @Override
            public Iterator<Map.Entry<String, String>> iterator() {
                throw new UnsupportedOperationException();
            }

            @Override
            public void put(final String key, final String value) {
                keyValueConsumer.accept(key, value);
            }
        });
    }
}

Example 2 with NoopSpanContext

use of io.opentracing.noop.NoopSpanContext in project hono by eclipse.

the class TracingHelper method injectSpanContext.

/**
 * Injects a {@code SpanContext} into a JSON object.
 * <p>
 * The span context will be injected into a new JSON object under key <em>span-context</em>.
 *
 * @param tracer The Tracer to use for injecting the context.
 * @param spanContext The context to inject or {@code null} if no context is available.
 * @param jsonObject The JSON object to inject the context into.
 * @throws NullPointerException if tracer or jsonObject is {@code null}.
 */
public static void injectSpanContext(final Tracer tracer, final SpanContext spanContext, final JsonObject jsonObject) {
    Objects.requireNonNull(tracer);
    Objects.requireNonNull(jsonObject);
    if (spanContext != null && !(spanContext instanceof NoopSpanContext)) {
        final JsonObject spanContextJson = new JsonObject();
        jsonObject.put(JSON_KEY_SPAN_CONTEXT, spanContextJson);
        tracer.inject(spanContext, Format.Builtin.TEXT_MAP, new JsonObjectInjectAdapter(spanContextJson));
    }
}

Example 3 with NoopSpanContext

use of io.opentracing.noop.NoopSpanContext in project hono by eclipse.

the class TracingHelper method injectSpanContext.

/**
 * Injects a {@code SpanContext} into the headers of vert.x {@code DeliveryOptions}.
 *
 * @param tracer The Tracer to use for injecting the context.
 * @param spanContext The context to inject or {@code null} if no context is available.
 * @param deliveryOptions The delivery options to inject the context into.
 * @throws NullPointerException if tracer or deliveryOptions is {@code null}.
 */
public static void injectSpanContext(final Tracer tracer, final SpanContext spanContext, final DeliveryOptions deliveryOptions) {
    Objects.requireNonNull(tracer);
    Objects.requireNonNull(deliveryOptions);
    if (spanContext != null && !(spanContext instanceof NoopSpanContext)) {
        final MultiMap headers = Optional.of(deliveryOptions).map(options -> options.getHeaders()).orElseGet(() -> {
            final MultiMap newHeaders = MultiMap.caseInsensitiveMultiMap();
            deliveryOptions.setHeaders(newHeaders);
            return newHeaders;
        });
        tracer.inject(spanContext, Format.Builtin.TEXT_MAP, new MultiMapInjectAdapter(headers));
    }
}