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package com.rbkmoney.woody.api;

import com.rbkmoney.woody.api.trace.Span;
import org.slf4j.MDC;

import java.time.Instant;

public class MDCUtils {

    public static final String SPAN_ID = "span_id";
    public static final String TRACE_ID = "trace_id";
    public static final String PARENT_ID = "parent_id";
    public static final String DEADLINE = "deadline";

    /**
     * Put span data in MDC
     *
     * @param span - service or client span
     */
    public static void putSpanData(Span span) {
        MDC.put(SPAN_ID, span.getId() != null ? span.getId() : "");
        MDC.put(TRACE_ID, span.getTraceId() != null ? span.getTraceId() : "");
        MDC.put(PARENT_ID, span.getParentId() != null ? span.getParentId() : "");
        if (span.hasDeadline()) {
            MDC.put(DEADLINE, span.getDeadline().toString());
        }
    }

    /**
     * Remove span data from MDC
     */
    public static void removeSpanData() {
        MDC.remove(SPAN_ID);
        MDC.remove(TRACE_ID);
        MDC.remove(PARENT_ID);
        MDC.remove(DEADLINE);
    }

    public static void putDeadline(Instant deadline) {
        if (deadline != null) {
            MDC.put(DEADLINE, deadline.toString());
        }
    }

    public static void removeDeadline() {
        MDC.remove(DEADLINE);
    }

}