How can I get the metrics through FlexyPool?

[leventunver]

Hi,

I was looking at Readme and got stuck at one particular point. Here it says:

You can declare bean MetricsFactory and besides of JMX metrics will be exported to the metrics provider and to the logs:

I am not sure if I understood what is meant here by this sentence. Can you forward me in the right direction, please? Any external link or tutorial will also be appreciated. All I wanted to do is to get the metrics as in the documentation:

2017-07-13 02:07:04.265  INFO 5432 --- [rter-1-thread-1] c.v.f.metric.codahale.CodahaleMetrics    : type=HISTOGRAM, name=concurrentConnectionRequestsHistogram, count=4, min=0, max=1, mean=0.5, stddev=0.5, median=1.0, p75=1.0, p95=1.0, p98=1.0, p99=1.0, p999=1.0
2017-07-13 02:07:04.265  INFO 5432 --- [rter-1-thread-1] c.v.f.metric.codahale.CodahaleMetrics    : type=HISTOGRAM, name=concurrentConnectionsHistogram, count=4, min=0, max=1, mean=0.5, stddev=0.5, median=1.0, p75=1.0, p95=1.0, p98=1.0, p99=1.0, p999=1.0
2017-07-13 02:07:04.265  INFO 5432 --- [rter-1-thread-1] c.v.f.metric.codahale.CodahaleMetrics    : type=HISTOGRAM, name=maxPoolSizeHistogram, count=1, min=10, max=10, mean=10.0, stddev=0.0, median=10.0, p75=10.0, p95=10.0, p98=10.0, p99=10.0, p999=10.0
2017-07-13 02:07:04.265  INFO 5432 --- [rter-1-thread-1] c.v.f.metric.codahale.CodahaleMetrics    : type=HISTOGRAM, name=overflowPoolSizeHistogram, count=0, min=0, max=0, mean=0.0, stddev=0.0, median=0.0, p75=0.0, p95=0.0, p98=0.0, p99=0.0, p999=0.0
2017-07-13 02:07:04.265  INFO 5432 --- [rter-1-thread-1] c.v.f.metric.codahale.CodahaleMetrics    : type=HISTOGRAM, name=retryAttemptsHistogram, count=0, min=0, max=0, mean=0.0, stddev=0.0, median=0.0, p75=0.0, p95=0.0, p98=0.0, p99=0.0, p999=0.0
2017-07-13 02:07:04.265  INFO 5432 --- [rter-1-thread-1] c.v.f.metric.codahale.CodahaleMetrics    : type=TIMER, name=connectionAcquireMillis, count=2, min=0.0, max=39.0, mean=19.5, stddev=19.5, median=39.0, p75=39.0, p95=39.0, p98=39.0, p99=39.0, p999=39.0, mean_rate=0.07135042014375073, m1=0.02490778899904623, m5=0.006288975787638508, m15=0.002179432534806779, rate_unit=events/second, duration_unit=milliseconds
2017-07-13 02:07:04.265  INFO 5432 --- [rter-1-thread-1] c.v.f.metric.codahale.CodahaleMetrics    : type=TIMER, name=connectionLeaseMillis, count=2, min=3.0, max=7.0, mean=5.0, stddev=2.0, median=7.0, p75=7.0, p95=7.0, p98=7.0, p99=7.0, p999=7.0, mean_rate=0.07135743555785098, m1=0.02490778899904623, m5=0.006288975787638508, m15=0.002179432534806779, rate_unit=events/second, duration_unit=milliseconds
2017-07-13 02:07:04.265  INFO 5432 --- [rter-1-thread-1] c.v.f.metric.codahale.CodahaleMetrics    : type=TIMER, name=overallConnectionAcquireMillis, count=2, min=0.0, max=39.0, mean=19.5, stddev=19.5, median=39.0, p75=39.0, p95=39.0, p98=39.0, p99=39.0, p999=39.0, mean_rate=0.07135462550886962, m1=0.02490778899904623, m5=0.006288975787638508, m15=0.002179432534806779, rate_unit=events/second, duration_unit=milliseconds

Thanks in advance.

[gavlyukovskiy]

Hi, FlexyPool supports multiple metrics libraries through MetricsFactory interface, the default one is printing them into the logs.

All I wanted to do is to get the metrics as in the documentation:

For that particular output you need to configure dropwizard metrics. However that would not be recommended for spring boot applications, because spring boot uses different metrics library - Micrometer.

With Micrometer you need to configure one of exporters for the metrics, e.g. Prometheus, but there is also an option to print them into console by declaring

@Bean
public MeterRegistry meterRegistry() {
    return new LoggingMeterRegistry();
}

[leventunver]

Hi @gavlyukovskiy, thanks a lot for your help, and apologies for my late reply. Now it works like a charm! This lib is very useful. Thanks for all your input!