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RxJava2でMDCのcontextを引き回すコード

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README.md

RxJava2でMDCのcontextを引き回すコード

RxJavaPlugins.setScheduleHandler(runnable -> {
	Map<String, String> context = MDC.getCopyOfContextMap();
	return () -> {
		Map<String, String> beforeContext = MDC.getCopyOfContextMap();
		if (context == null) {
			MDC.clear();
		} else {
			MDC.setContextMap(context);
		}

		try {
			runnable.run();
		} finally {
			if (beforeContext == null) {
				MDC.clear();
			} else {
				MDC.setContextMap(beforeContext);
			}
		}
	};
});