def getStatistic_common(name):
memoryBean = ManagementFactory.getMemoryMXBean()
if name == "enabler_HEAP_MEMORY_USAGE":
bytes = memoryBean.getHeapMemoryUsage().getUsed()
return bytes / 1024 / 1024 # convert to MiB
elif name == "enabler_NON_HEAP_MEMORY_USAGE":
bytes = memoryBean.getNonHeapMemoryUsage().getUsed()
return bytes / 1024 / 1024 # convert to MiB
elif name == "enabler_DATANODE_DECOMMISION_REQUESTS":
hadoop_home_dir = proxy.getContainer().getRuntimeContext().getVariable('hadoop_enabler_HADOOP_HOME_DIR').getValue()
if ContainerUtils.isWindows():
raise Exception("[hadoop_enabler_common] Windows not yet implemented in by this enabler.")
else:
commandline = "sh " + os.path.join(hadoop_home_dir, "bin", "hadoop") + " fs -count " + decommissionqueue_dir
output = runCommand(commandline, expectedReturnCodes=[0, 255], suppressOutput=True)
if (output[0] == 0):
stdout = str(output[1])
count = int(stdout.split()[1])
return int(count)
elif (output[0] == 255):
# Decommission request directory doesn't exist. Not expected to exist until the some datanode posts the first request
return int(0)
else:
ContainerUtils.getLogger(proxy).warning("[hadoop_enabler_common] Unexpected return code [" + str(output[0]) +
"] while attempting to retrieve statistic enabler_DATANODE_DECOMMISION_REQUESTS statistic. Assuming 0.")
print output
return int(0)
elif name.startswith('enabler_DISK_'):
tmpdir = proxy.getContainer().getRuntimeContext().getVariable('hadoop_enabler_TMP_DIR').getValue()
if name == "enabler_DISK_SPACE_FREE":
blocks = int(getStatistic_disk(tmpdir)[0])
return blocks / 1024 / 1024 # convert 1024-byte blocks to GiB
#return available
elif name == "enabler_DISK_SPACE_USED":
blocks = int(getStatistic_disk(tmpdir)[1])
return blocks / 1024 / 1024 # convert 1024-byte blocks to GiB
#return used
elif name == "enabler_DISK_SPACE_USED_PERCENT":
return getStatistic_disk(tmpdir)[2]
#return int(percent[:-1])
else:
raise Exception("[hadoop_enabler_common] Unsupported statistic type requested [" + str(name) + "]")
else:
raise Exception("[hadoop_enabler_common] Unsupported statistic type requested [" + str(name) + "]")
import openhab
from java.lang.management import ManagementFactory
jmx_beans = {
'Threads' : ManagementFactory.getThreadMXBean(),
'Memory' : ManagementFactory.getMemoryMXBean(),
}
for bean in ManagementFactory.getMemoryPoolMXBeans():
jmx_beans[bean.name] = bean
@openhab.rule
class JmxBinding(object):
# Binding all items in one rule to avoid numerous timers. If some items
# should be updated at a different frequencies, then multiple rules can be
# instantiated.
def __init__(self, item_specs, cronspec="0 * * * * ?"):
self._item_specs = item_specs
self._cronspec = cronspec
def getEventTrigger(self):
return [
StartupTrigger(),
TimerTrigger(self._cronspec)
]
def execute(self, event):
for item_name, bean_name, attr_path, transform in self._item_specs:
try:
bean = jmx_beans.get(bean_name)
