@Measurement(name = "cpu",database="servers", retentionPolicy="autogen",timeUnit = TimeUnit.MILLISECONDS)
public class Cpu {
    @Column(name = "time")
    private Instant time;
    @Column(name = "host", tag = true)
    private String hostname;
    @Column(name = "region", tag = true)
    private String region;
    @Column(name = "idle")
    private Double idle;
    @Column(name = "happydevop")
    private Boolean happydevop;
    @Column(name = "uptimesecs")
    private Long uptimeSecs;
    // getters (and setters if you need)
}

Cpu cpu = .., create the cpu measure
influxDBMapper.save(cpu);

Cpu persistedCpu = influxDBMapper.query(Cpu.class).get(0);

Query query = ... create your query
List<Cpu> persistedMeasure = influxDBMapper.query(query,Cpu.class);