def get_events(self, result, ds):
"""
Return a list of event dictionaries informing about the health
of the region server.
"""
data = json.loads(result)
# Check for dead servers.
dead_nodes = [
prepId(dead_node_name(node)[0])
for node in version_diff(data["DeadNodes"])
]
# Send error or clear event.
severity = ((self.component in dead_nodes) and ZenEventClasses.Error
or ZenEventClasses.Clear)
return [{
'component':
self.component,
'summary':
"Region server '{0}' is dead".format(
self.component.replace('_', ':')),
'eventKey':
'hbase_regionserver_monitoring_error',
'eventClass':
'/Status',
'severity':
severity
}]
def process(self, result):
"""
Parses resulting data into datapoints.
"""
data = json.loads(result)
node_id, region_id = self.component.split(NAME_SPLITTER)
res = {}
for node in version_diff(data["LiveNodes"]):
if node_id == prepId(node['name']):
for region in node["Region"]:
if region_id == prepId(region['name']):
res = {
'read_requests': (0, 'N'),
'write_requests': (0, 'N'),
'number_of_stores': (0, 'N'),
'number_of_store_files': (0, 'N'),
'store_file_size_mb': (0, 'N'),
'store_file_index_size_mb': (0, 'N'),
'memstore_size_mb': (0, 'N'),
'current_compacted_kv': (0, 'N'),
'total_compacting_kv': (0, 'N'),
}
return sum_perf_metrics(res, region)
return res
def process(self, result):
"""
Parses resulting data into datapoints.
"""
data = json.loads(result)
for node in version_diff(data["LiveNodes"]):
if self.component == prepId(node['name']):
res = {
'requests_per_second': (node['requests'], 'N'),
'used_heap_mb': (node['heapSizeMB'], 'N'),
'max_heap_mb': (node['maxHeapSizeMB'], 'N'),
'regions': (len(node['Region']), 'N'),
'read_requests': (0, 'N'),
'write_requests': (0, 'N'),
'number_of_stores': (0, 'N'),
'number_of_store_files': (0, 'N'),
'store_file_size_mb': (0, 'N'),
'store_file_index_size_mb': (0, 'N'),
'memstore_size_mb': (0, 'N'),
'current_compacted_kv': (0, 'N'),
'total_compacting_kv': (0, 'N'),
}
for region in node["Region"]:
res = sum_perf_metrics(res, region)
return res
return {}
def process(self, result):
"""
Parses resulting data into datapoints.
"""
data = json.loads(result)
for node in version_diff(data["LiveNodes"]):
if self.component == prepId(node['name']):
res = {
'requests_per_second': (node['requests'], 'N'),
'used_heap_mb': (node['heapSizeMB'], 'N'),
'max_heap_mb': (node['maxHeapSizeMB'], 'N'),
'regions': (len(node['Region']), 'N'),
'read_requests': (0, 'N'),
'write_requests': (0, 'N'),
'number_of_stores': (0, 'N'),
'number_of_store_files': (0, 'N'),
'store_file_size_mb': (0, 'N'),
'store_file_index_size_mb': (0, 'N'),
'memstore_size_mb': (0, 'N'),
'current_compacted_kv': (0, 'N'),
'total_compacting_kv': (0, 'N'),
}
for region in node["Region"]:
res = sum_perf_metrics(res, region)
return res
return {}
def process(self, result):
"""
Parses resulting data into datapoints.
"""
data = json.loads(result)
self.dead = version_diff(data['DeadNodes'])
self.live = version_diff(data['LiveNodes'])
# Calculate the percentage of dead servers.
overall_servers = len(self.dead) + len(self.live)
percent_dead_servers = 0.00
if overall_servers:
percent_dead_servers = len(self.dead) * 100.00 / overall_servers
return {
'live_servers': (len(self.live), 'N'),
'dead_servers': (len(self.dead), 'N'),
'requests_per_second': (data['requests'], 'N'),
'regions': (data['regions'], 'N'),
'average_load': (data['averageLoad'], 'N'),
'percent_dead_servers': (percent_dead_servers, 'N'),
}
def process(self, result):
"""
Parses resulting data into datapoints.
"""
data = json.loads(result)
self.dead = version_diff(data['DeadNodes'])
self.live = version_diff(data['LiveNodes'])
# Calculate the percentage of dead servers.
overall_servers = len(self.dead) + len(self.live)
percent_dead_servers = 0.00
if overall_servers:
percent_dead_servers = len(self.dead) * 100.00 / overall_servers
return {
'live_servers': (len(self.live), 'N'),
'dead_servers': (len(self.dead), 'N'),
'requests_per_second': (data['requests'], 'N'),
'regions': (data['regions'], 'N'),
'average_load': (data['averageLoad'], 'N'),
'percent_dead_servers': (percent_dead_servers, 'N'),
}
def get_events(self, result, ds):
"""
Return a list of event dictionaries informing about the health
of the region server.
"""
data = json.loads(result)
# Check for dead servers.
dead_nodes = [prepId(dead_node_name(node)[0]) for node
in version_diff(data["DeadNodes"])]
# Send error or clear event.
severity = ((self.component in dead_nodes) and ZenEventClasses.Error
or ZenEventClasses.Clear)
return [{
'component': self.component,
'summary': "Region server '{0}' is dead".format(
self.component.replace('_', ':')),
'eventKey': 'hbase_regionserver_monitoring_error',
'eventClass': '/Status',
'severity': severity
}]
