com.xxl.job.spring.boot.metrics.MetricNames Maven / Gradle / Ivy

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package com.xxl.job.spring.boot.metrics;

public class MetricNames {

    /**
     * Concatenates elements to form a dotted name, eliding any null values or empty strings.
     *
     * @param name  the first element of the name
     * @param names the remaining elements of the name
     * @return {@code name} and {@code names} concatenated by periods
     */
    public static String name(String name, String... names) {
        final StringBuilder builder = new StringBuilder();
        append(builder, name);
        if (names != null) {
            for (String s : names) {
                append(builder, s);
            }
        }
        return builder.toString();
    }

    /**
     * Concatenates a class name and elements to form a dotted name, eliding any null values or
     * empty strings.
     *
     * @param klass the first element of the name
     * @param names the remaining elements of the name
     * @return {@code klass} and {@code names} concatenated by periods
     */
    public static String name(Class klass, String... names) {
        return name(klass.getName(), names);
    }

    private static void append(StringBuilder builder, String part) {
        if (part != null && !part.isEmpty()) {
            if (builder.length() > 0) {
                builder.append('.');
            }
            builder.append(part);
        }
    }
}