com.vsct.dt.strowgr.admin.nsq.payload.fragment.Header.java Source code

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Here is the source code for com.vsct.dt.strowgr.admin.nsq.payload.fragment.Header.java

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/*
 * Copyright (C) 2016 VSCT
 *
 * 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 com.vsct.dt.strowgr.admin.nsq.payload.fragment;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.vsct.dt.strowgr.admin.nsq.NSQ;

import java.util.Objects;
import java.util.Optional;
import java.util.UUID;

import static com.google.common.base.Preconditions.checkNotNull;

public class Header {

    private static final String UNKNOWN_SOURCE = "unknown";

    private final String correlationId;
    private final String application;
    private final String platform;
    private final Long timestamp;
    private final String source;

    @JsonCreator
    public Header(@JsonProperty("correlationId") String correlationId,
            @JsonProperty("application") String application, @JsonProperty("platform") String platform,
            @JsonProperty("timestamp") Long timestamp, @JsonProperty("source") String source) {
        this.correlationId = Optional.ofNullable(correlationId).orElseGet(() -> UUID.randomUUID().toString());
        this.application = checkNotNull(application);
        this.platform = checkNotNull(platform);
        this.timestamp = Optional.ofNullable(timestamp).orElseGet(() -> System.currentTimeMillis());
        this.source = Optional.ofNullable(source).orElseGet(() -> UNKNOWN_SOURCE);
    }

    public Header(String correlationId, String application, String platform) {
        this(correlationId, application, platform, System.currentTimeMillis(), NSQ.SOURCE_NAME);
    }

    public String getCorrelationId() {
        return correlationId;
    }

    public String getApplication() {
        return application;
    }

    public String getPlatform() {
        return platform;
    }

    public Long getTimestamp() {
        return timestamp;
    }

    public String getSource() {
        return source;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o)
            return true;
        if (o == null || getClass() != o.getClass())
            return false;
        Header header = (Header) o;
        return Objects.equals(correlationId, header.correlationId)
                && Objects.equals(application, header.application) && Objects.equals(platform, header.platform)
                && Objects.equals(timestamp, header.timestamp) && Objects.equals(source, header.source);
    }

    @Override
    public int hashCode() {
        return Objects.hash(correlationId, application, platform, timestamp, source);
    }
}