package org.kuali.common.devops.heap;

import static org.kuali.common.util.base.Precondition.checkMin;

import com.fasterxml.jackson.databind.annotation.JsonDeserialize;

@JsonDeserialize(builder = Heap.Builder.class)
public final class Heap {

        private final long young;
        private final long old;
        private final long perm;

        private Heap(Builder builder) {
                this.young = builder.young;
                this.old = builder.old;
                this.perm = builder.perm;
        }

        public static Builder builder() {
                return new Builder();
        }

        public static class Builder implements org.apache.commons.lang3.builder.Builder<Heap> {

                private long young = -1;
                private long old = -1;
                private long perm = -1;

                public Builder withYoung(long young) {
                        this.young = young;
                        return this;
                }

                public Builder withOld(long old) {
                        this.old = old;
                        return this;
                }

                public Builder withPerm(long perm) {
                        this.perm = perm;
                        return this;
                }

                @Override
                public Heap build() {
                        return validate(new Heap(this));
                }

                private static Heap validate(Heap instance) {
                        checkMin(instance.perm, 0, "perm");
                        checkMin(instance.old, 0, "old");
                        checkMin(instance.young, 0, "young");
                        return instance;
                }
        }

        public long getYoung() {
                return young;
        }

        public long getOld() {
                return old;
        }

        public long getPerm() {
                return perm;
        }

}