How to use

getHeapMemoryUsage

method

in

rocks.inspectit.agent.java.sensor.platform.provider.MemoryInfoProvider

  protected void mockCollectorWithDefaults() {
    MemoryUsage heapMemoryUsage = Mockito.mock(MemoryUsage.class);
    when(heapMemoryUsage.getUsed()).thenReturn(0L);
    when(heapMemoryUsage.getCommitted()).thenReturn(0L);

    MemoryUsage nonHeapMemoryUsage = Mockito.mock(MemoryUsage.class);
    when(nonHeapMemoryUsage.getUsed()).thenReturn(0L);
    when(nonHeapMemoryUsage.getCommitted()).thenReturn(0L);

    when(this.osBean.getFreePhysicalMemorySize()).thenReturn(0L);
    when(this.osBean.getFreeSwapSpaceSize()).thenReturn(0L);
    when(this.osBean.getCommittedVirtualMemorySize()).thenReturn(0L);
    when(this.memoryBean.getHeapMemoryUsage()).thenReturn(heapMemoryUsage);
    when(this.memoryBean.getNonHeapMemoryUsage()).thenReturn(nonHeapMemoryUsage);
  }
}

@Test
void comittedHeapMemorySizeIsCalculated() {
  this.mockCollectorWithDefaults();
  MemoryUsage heapMemoryUsage = this.memoryBean.getHeapMemoryUsage();
  when(heapMemoryUsage.getCommitted()).thenReturn(10L).thenReturn(9L).thenReturn(11L).thenReturn(10L);
  this.cut.gather();
  this.cut.gather();
  this.cut.gather();
  this.cut.gather();
  MemoryInformationData collector = (MemoryInformationData) this.cut.get();
  assertThat(collector.getMinComittedHeapMemorySize(), is(9L));
  assertThat(collector.getMaxComittedHeapMemorySize(), is(11L));
  assertThat(collector.getTotalComittedHeapMemorySize(), is(40L));
}

@Test
void usedHeapMemorySizeIsCalculated() {
  this.mockCollectorWithDefaults();
  MemoryUsage heapMemoryUsage = this.memoryBean.getHeapMemoryUsage();
  when(heapMemoryUsage.getUsed()).thenReturn(10L).thenReturn(9L).thenReturn(11L).thenReturn(10L);
  this.cut.gather();
  this.cut.gather();
  this.cut.gather();
  this.cut.gather();
  MemoryInformationData collector = (MemoryInformationData) this.cut.get();
  assertThat(collector.getMinUsedHeapMemorySize(), is(9L));
  assertThat(collector.getMaxUsedHeapMemorySize(), is(11L));
  assertThat(collector.getTotalUsedHeapMemorySize(), is(40L));
}

when(heapMemoryUsage.getInit()).thenReturn(16L);
when(heapMemoryUsage.getMax()).thenReturn(17L);
when(this.memoryBean.getHeapMemoryUsage()).thenReturn(heapMemoryUsage);

when(heapMemoryUsageA.getInit()).thenReturn(16L);
when(heapMemoryUsageA.getMax()).thenReturn(17L);
when(this.memoryBean.getHeapMemoryUsage()).thenReturn(heapMemoryUsageA);
when(heapMemoryUsageB.getInit()).thenReturn(1600L);
when(heapMemoryUsageB.getMax()).thenReturn(1700L);
when(this.memoryBean.getHeapMemoryUsage()).thenReturn(heapMemoryUsageB);

this.systemInformationData.setVmSpecName(this.getRuntimeBean().getSpecName());
this.systemInformationData.setInitHeapMemorySize(this.getMemoryBean().getHeapMemoryUsage().getInit());
this.systemInformationData.setMaxHeapMemorySize(this.getMemoryBean().getHeapMemoryUsage().getMax());

long freeSwapSpace = this.getOsBean().getFreeSwapSpaceSize();
long comittedVirtualMemSize = this.getOsBean().getCommittedVirtualMemorySize();
long usedHeapMemorySize = this.getMemoryBean().getHeapMemoryUsage().getUsed();
long comittedHeapMemorySize = this.getMemoryBean().getHeapMemoryUsage().getCommitted();
long usedNonHeapMemorySize = this.getMemoryBean().getNonHeapMemoryUsage().getUsed();
long comittedNonHeapMemorySize = this.getMemoryBean().getNonHeapMemoryUsage().getCommitted();