Class Key

api/src/main/java/org/apache/sirona/counters/Counter.java:63–104

    double getSecondMoment(); // here for aggregation etc but not (yet?) a human metric so not in MetricData

    public static class Key implements Serializable {
        private final String name;
        private final Role role;
        private int hash = Integer.MIN_VALUE;

        public Key(final Role role, final String name) {
            this.role = role;
            this.name = name;
        }

        @Override
        public String toString() {
            return "name=" + name;
        }

        @Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (o == null || getClass() != o.getClass()) return false;

            final Key key = (Key) o;
            return name.equals(key.name) && role.equals(key.role);

        }

        @Override
        public int hashCode() {
            if (hash == Integer.MIN_VALUE) {
                hash = name.hashCode();
                hash = 31 * hash + role.hashCode();
            }
            return hash;
        }

        public String getName() {
            return name;
        }

        public Role getRole() {
            return role;
        }
    }
}