pl.allegro.tech.hermes.api.TopicPartition Maven / Gradle / Ivy

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Fast and reliable message broker built on top of Kafka.

There is a newer version: 2.6.22

package pl.allegro.tech.hermes.api;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;

import java.util.Objects;

public class TopicPartition {
    private final int partition;
    private final String topic;
    private final long currentOffset;
    private final long logEndOffset;
    private final long lag;
    private final String offsetMetadata;
    private final ContentType contentType;

    @JsonCreator
    public TopicPartition(@JsonProperty("partition") int partition,
                          @JsonProperty("topic") String topic,
                          @JsonProperty("currentOffset") long currentOffset,
                          @JsonProperty("logEndOffset") long logEndOffset,
                          @JsonProperty("offsetMetadata") String offsetMetadata,
                          @JsonProperty("contentType") ContentType contentType) {
        this.partition = partition;
        this.topic = topic;
        this.currentOffset = currentOffset;
        this.logEndOffset = logEndOffset;
        this.offsetMetadata = offsetMetadata;
        this.contentType = contentType;

        this.lag = calculateLag(currentOffset, logEndOffset);
    }

    private long calculateLag(long currentOffset, long logEndOffset) {
        return logEndOffset - currentOffset;
    }

    public int getPartition() {
        return partition;
    }

    public String getTopic() {
        return topic;
    }

    public long getCurrentOffset() {
        return currentOffset;
    }

    public String getOffsetMetadata() {
        return offsetMetadata;
    }

    public long getLogEndOffset() {
        return logEndOffset;
    }

    public long getLag() {
        return lag;
    }

    public ContentType getContentType() {
        return contentType;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        TopicPartition that = (TopicPartition) o;
        return partition == that.partition
                && currentOffset == that.currentOffset
                && logEndOffset == that.logEndOffset
                && contentType == that.contentType
                && lag == that.lag
                && Objects.equals(topic, that.topic)
                && Objects.equals(offsetMetadata, that.offsetMetadata);
    }

    @Override
    public int hashCode() {
        return Objects.hash(partition, topic, currentOffset, logEndOffset, contentType, lag, offsetMetadata);
    }
}