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/**
 * Copyright (C) 2015 The Gravitee team (http://gravitee.io)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.gravitee.node.api.monitor;

import io.gravitee.reporter.api.Reportable;
import java.io.Serializable;
import java.time.Instant;

/**
 * @author David BRASSELY (david.brassely at graviteesource.com)
 * @author GraviteeSource Team
 */
// TODO: This class is a duplicate of the one coming from gravitee-reporter-api and will soon completely replace it.
public class Monitor implements Serializable, Reportable {

    private String nodeId;
    private long timestamp;

    JvmInfo jvm;
    OsInfo os;
    ProcessInfo process;

    protected Monitor() {}

    public Monitor(String nodeId, final long timestamp) {
        this.nodeId = nodeId;
        this.timestamp = timestamp;
    }

    @Override
    public Instant timestamp() {
        return Instant.ofEpochMilli(timestamp);
    }

    public JvmInfo getJvm() {
        return jvm;
    }

    public OsInfo getOs() {
        return os;
    }

    public ProcessInfo getProcess() {
        return process;
    }

    public long getTimestamp() {
        return timestamp;
    }

    public String getNodeId() {
        return nodeId;
    }

    public static Builder on(String nodeId) {
        return new Builder().on(nodeId);
    }

    public static class Builder {

        private String nodeId;
        private long timestamp;
        private OsInfo os;
        private JvmInfo jvm;
        private ProcessInfo process;

        public Builder on(String nodeId) {
            this.nodeId = nodeId;
            return this;
        }

        public Builder at(long timestamp) {
            this.timestamp = timestamp;
            return this;
        }

        public Builder os(OsInfo os) {
            this.os = os;
            return this;
        }

        public Builder jvm(JvmInfo jvm) {
            this.jvm = jvm;
            return this;
        }

        public Builder process(ProcessInfo process) {
            this.process = process;
            return this;
        }

        public Monitor build() {
            Monitor metrics = new Monitor(nodeId, timestamp);
            metrics.os = os;
            metrics.jvm = jvm;
            metrics.process = process;
            return metrics;
        }
    }
}