Examples with HealthCheck com.codahale.metrics.health.HealthCheck used on opensource projects

Example 1 with HealthCheck

use of com.codahale.metrics.health.HealthCheck in project metrics by dropwizard.

the class HealthCheckServletTest method returnsA200IfAllHealthChecksAreHealthy.

@Test
public void returnsA200IfAllHealthChecksAreHealthy() throws Exception {
    registry.register("fun", new HealthCheck() {

        @Override
        protected Result check() throws Exception {
            return Result.healthy("whee");
        }
    });
    processRequest();
    assertThat(response.getStatus()).isEqualTo(200);
    assertThat(response.getContent()).isEqualTo("{\"fun\":{\"healthy\":true,\"message\":\"whee\"}}");
    assertThat(response.get(HttpHeader.CONTENT_TYPE)).isEqualTo("application/json");
}

Example 2 with HealthCheck

use of com.codahale.metrics.health.HealthCheck in project metrics by dropwizard.

the class ThreadDeadlockHealthCheckTest method isUnhealthyIfThreadsAreDeadlocked.

@Test
public void isUnhealthyIfThreadsAreDeadlocked() throws Exception {
    final Set<String> threads = new TreeSet<String>();
    threads.add("one");
    threads.add("two");
    final ThreadDeadlockDetector detector = mock(ThreadDeadlockDetector.class);
    final ThreadDeadlockHealthCheck healthCheck = new ThreadDeadlockHealthCheck(detector);
    when(detector.getDeadlockedThreads()).thenReturn(threads);
    final HealthCheck.Result result = healthCheck.execute();
    assertThat(result.isHealthy()).isFalse();
    assertThat(result.getMessage()).isEqualTo("[one, two]");
}

Example 3 with HealthCheck

use of com.codahale.metrics.health.HealthCheck in project jstorm by alibaba.

the class NettyClient method registerMetrics.

public void registerMetrics() {
    if (this.enableNettyMetrics) {
        sendTimer = (AsmHistogram) JStormMetrics.registerNettyMetric(MetricUtils.nettyMetricName(AsmMetric.mkName(MetricDef.NETTY_CLI_SEND_TIME, nettyConnection), MetricType.HISTOGRAM), new AsmHistogram());
        sendSpeed = (AsmMeter) JStormMetrics.registerNettyMetric(MetricUtils.nettyMetricName(AsmMetric.mkName(MetricDef.NETTY_CLI_SEND_SPEED, nettyConnection), MetricType.METER), new AsmMeter());
        CacheGaugeHealthCheck cacheGauge = new CacheGaugeHealthCheck(messageBuffer, MetricDef.NETTY_CLI_CACHE_SIZE + ":" + nettyConnection.toString());
        JStormMetrics.registerNettyMetric(MetricUtils.nettyMetricName(AsmMetric.mkName(MetricDef.NETTY_CLI_CACHE_SIZE, nettyConnection), MetricType.GAUGE), new AsmGauge(cacheGauge));
        JStormMetrics.registerNettyMetric(MetricUtils.nettyMetricName(AsmMetric.mkName(MetricDef.NETTY_CLI_SEND_PENDING, nettyConnection), MetricType.GAUGE), new AsmGauge(new com.codahale.metrics.Gauge<Double>() {

            @Override
            public Double getValue() {
                return ((Long) pendings.get()).doubleValue();
            }
        }));
        JStormHealthCheck.registerWorkerHealthCheck(MetricDef.NETTY_CLI_CACHE_SIZE + ":" + nettyConnection.toString(), cacheGauge);
    }
    JStormHealthCheck.registerWorkerHealthCheck(MetricDef.NETTY_CLI_CONNECTION + ":" + nettyConnection.toString(), new HealthCheck() {

        HealthCheck.Result healthy = HealthCheck.Result.healthy();

        HealthCheck.Result unhealthy = HealthCheck.Result.unhealthy("NettyConnection " + nettyConnection.toString() + " is broken.");

        @Override
        protected Result check() throws Exception {
            if (isChannelReady() == null) {
                return unhealthy;
            } else {
                return healthy;
            }
        }
    });
}

Example 4 with HealthCheck

use of com.codahale.metrics.health.HealthCheck in project metrics by dropwizard.

the class HealthCheckServletTest method returnsA500IfAnyHealthChecksAreUnhealthy.

@Test
public void returnsA500IfAnyHealthChecksAreUnhealthy() throws Exception {
    registry.register("fun", new HealthCheck() {

        @Override
        protected Result check() throws Exception {
            return Result.healthy("whee");
        }
    });
    registry.register("notFun", new HealthCheck() {

        @Override
        protected Result check() throws Exception {
            return Result.unhealthy("whee");
        }
    });
    processRequest();
    assertThat(response.getStatus()).isEqualTo(500);
    assertThat(response.getContent()).isEqualTo("{\"fun\":{\"healthy\":true,\"message\":\"whee\"},\"notFun\":{\"healthy\":false,\"message\":\"whee\"}}");
    assertThat(response.get(HttpHeader.CONTENT_TYPE)).isEqualTo("application/json");
}

Example 5 with HealthCheck

use of com.codahale.metrics.health.HealthCheck in project metrics by dropwizard.

the class HealthCheckServletTest method optionallyPrettyPrintsTheJson.

@Test
public void optionallyPrettyPrintsTheJson() throws Exception {
    registry.register("fun", new HealthCheck() {

        @Override
        protected Result check() throws Exception {
            return Result.healthy("whee");
        }
    });
    request.setURI("/healthchecks?pretty=true");
    processRequest();
    assertThat(response.getStatus()).isEqualTo(200);
    assertThat(response.getContent()).isEqualTo(String.format("{%n" + "  \"fun\" : {%n" + "    \"healthy\" : true,%n" + "    \"message\" : \"whee\"%n" + "  }%n" + "}"));
    assertThat(response.get(HttpHeader.CONTENT_TYPE)).isEqualTo("application/json");
}