def __new__(cls, name, bases, attrs):
# Command key initialization
command_key = attrs.get('command_key') or name
new_class = type.__new__(cls, command_key, bases, attrs)
if name in cls.__blacklist__:
return new_class
# TODO: Check instance CommandProperties here?
command_properties_defaults = attrs.get('command_properties_defaults')
if command_properties_defaults is None:
command_properties_defaults = CommandProperties.setter()
# Properties initialization
properties_strategy = attrs.get('properties_strategy')
if properties_strategy is None:
properties_strategy = CommandProperties(
command_key, command_properties_defaults)
setattr(new_class, 'properties', properties_strategy)
# Pool key
# This defines which pool this command should run on.
# It uses the pool_key if provided, then defaults to use Group key.
# It can then be overridden by a property if defined so it can be
# changed at runtime.
pool_key = attrs.get('pool_key')
# Group key initialization
group_key = attrs.get('group_key') or '{}Group'.format(command_key)
NewGroup = type(group_key, (Group, ),
dict(group_key=group_key, pool_key=pool_key))
setattr(new_class, 'group', NewGroup())
setattr(new_class, 'group_key', group_key)
setattr(new_class, 'command_key', command_key)
# Metrics initialization
command_metrics_key = '{}CommandMetrics'.format(command_key)
# TODO: Check instance CommandMetrics here?
metrics = attrs.get('metrics')
if metrics is None:
NewCommandMetrics = type(
command_metrics_key, (CommandMetrics, ),
dict(command_metrics_key=command_metrics_key,
group_key=group_key,
pool_key=pool_key))
metrics = NewCommandMetrics(properties=properties_strategy)
setattr(new_class, 'metrics', metrics)
return new_class
def test_integer_code_default():
setter = CommandProperties.setter()
properties = PropertiesCommandTest('TEST', setter, 'unitTestPrefix')
result1 = CommandProperties.default_metrics_rolling_statistical_window
result2 = properties.metrics_rolling_statistical_window_in_milliseconds()
assert result1 == result2
def test_boolean_setter_override2():
setter = CommandProperties.setter().with_circuit_breaker_force_closed(
False)
properties = PropertiesCommandTest('TEST', setter, 'unitTestPrefix')
# The setter override should take precedence over default
assert False == properties.circuit_breaker_force_closed()
def test_integer_code_default():
setter = CommandProperties.setter()
properties = PropertiesCommandTest('TEST', setter, 'unitTestPrefix')
result1 = CommandProperties.default_metrics_rolling_statistical_window
result2 = properties.metrics_rolling_statistical_window_in_milliseconds()
assert result1 == result2
def test_integer_setter_override():
setter = CommandProperties.setter(
).with_metrics_rolling_statistical_window_in_milliseconds(5000)
properties = PropertiesCommandTest('TEST', setter, 'unitTestPrefix')
# The setter override should take precedence over default_value
assert 5000 == properties.metrics_rolling_statistical_window_in_milliseconds(
)
def __new__(cls, name, bases, attrs):
# Command key initialization
command_key = attrs.get('command_key') or name
new_class = type.__new__(cls, command_key, bases, attrs)
if name in cls.__blacklist__:
return new_class
# TODO: Check instance CommandProperties here?
command_properties_defaults = attrs.get('command_properties_defaults')
if command_properties_defaults is None:
command_properties_defaults = CommandProperties.setter()
# Properties initialization
properties_strategy = attrs.get('properties_strategy')
if properties_strategy is None:
properties_strategy = CommandProperties(
command_key, command_properties_defaults)
setattr(new_class, 'properties', properties_strategy)
# Pool key
# This defines which pool this command should run on.
# It uses the pool_key if provided, then defaults to use Group key.
# It can then be overridden by a property if defined so it can be
# changed at runtime.
pool_key = attrs.get('pool_key')
# Group key initialization
group_key = attrs.get('group_key') or '{}Group'.format(command_key)
NewGroup = type(group_key, (Group,),
dict(group_key=group_key, pool_key=pool_key))
setattr(new_class, 'group', NewGroup())
setattr(new_class, 'group_key', group_key)
setattr(new_class, 'command_key', command_key)
# Metrics initialization
command_metrics_key = '{}CommandMetrics'.format(command_key)
# TODO: Check instance CommandMetrics here?
metrics = attrs.get('metrics')
if metrics is None:
NewCommandMetrics = type(
command_metrics_key, (CommandMetrics,),
dict(command_metrics_key=command_metrics_key,
group_key=group_key, pool_key=pool_key))
metrics = NewCommandMetrics(properties=properties_strategy)
setattr(new_class, 'metrics', metrics)
return new_class
def get_unit_test_properties_setter():
return CommandProperties.setter() \
.with_execution_timeout_in_milliseconds(1000) \
.with_execution_isolation_strategy(0) \
.with_execution_isolation_thread_interrupt_on_timeout(True) \
.with_circuit_breaker_force_open(False) \
.with_circuit_breaker_error_threshold_percentage(40) \
.with_metrics_rolling_statistical_window_in_milliseconds(5000) \
.with_metrics_rolling_statistical_window_buckets(5) \
.with_circuit_breaker_request_volume_threshold(0) \
.with_circuit_breaker_sleep_window_in_milliseconds(5000000) \
.with_circuit_breaker_enabled(True) \
.with_request_log_enabled(True) \
.with_execution_isolation_semaphore_max_concurrent_requests(20) \
.with_fallback_isolation_semaphore_max_concurrent_requests(10) \
.with_fallback_enabled(True) \
.with_circuit_breaker_force_closed(False) \
.with_metrics_rolling_percentile_enabled(True) \
.with_request_cache_enabled(True) \
.with_metrics_rolling_percentile_window_in_milliseconds(60000) \
.with_metrics_rolling_percentile_window_buckets(12) \
.with_metrics_rolling_percentile_bucket_size(1000) \
.with_metrics_health_snapshot_interval_in_milliseconds(0)
def get_unit_test_properties_setter():
return CommandProperties.setter() \
.with_execution_timeout_in_milliseconds(1000) \
.with_execution_isolation_strategy(0) \
.with_execution_isolation_thread_interrupt_on_timeout(True) \
.with_circuit_breaker_force_open(False) \
.with_circuit_breaker_error_threshold_percentage(40) \
.with_metrics_rolling_statistical_window_in_milliseconds(5000) \
.with_metrics_rolling_statistical_window_buckets(5) \
.with_circuit_breaker_request_volume_threshold(0) \
.with_circuit_breaker_sleep_window_in_milliseconds(5000000) \
.with_circuit_breaker_enabled(True) \
.with_request_log_enabled(True) \
.with_execution_isolation_semaphore_max_concurrent_requests(20) \
.with_fallback_isolation_semaphore_max_concurrent_requests(10) \
.with_fallback_enabled(True) \
.with_circuit_breaker_force_closed(False) \
.with_metrics_rolling_percentile_enabled(True) \
.with_request_cache_enabled(True) \
.with_metrics_rolling_percentile_window_in_milliseconds(60000) \
.with_metrics_rolling_percentile_window_buckets(12) \
.with_metrics_rolling_percentile_bucket_size(1000) \
.with_metrics_health_snapshot_interval_in_milliseconds(0)
def test_integer_setter_override():
setter = CommandProperties.setter().with_metrics_rolling_statistical_window_in_milliseconds(5000)
properties = PropertiesCommandTest('TEST', setter, 'unitTestPrefix')
# The setter override should take precedence over default_value
assert 5000 == properties.metrics_rolling_statistical_window_in_milliseconds()
def test_boolean_code_default():
setter = CommandProperties.setter()
properties = PropertiesCommandTest('TEST', setter, 'unitTestPrefix')
assert CommandProperties.default_circuit_breaker_force_closed == properties.circuit_breaker_force_closed()
def test_boolean_setter_override2():
setter = CommandProperties.setter().with_circuit_breaker_force_closed(False)
properties = PropertiesCommandTest('TEST', setter, 'unitTestPrefix')
# The setter override should take precedence over default
assert False == properties.circuit_breaker_force_closed()
from hystrix.metrics import Metrics
from hystrix.command_properties import CommandProperties
from hystrix.rolling_number import RollingNumber, RollingNumberEvent
setter = CommandProperties.setter()
properties = CommandProperties('TEST', setter, 'unit_test_prefix')
counter = RollingNumber(properties.metrics_rolling_statistical_window_in_milliseconds(),
properties.metrics_rolling_statistical_window_buckets())
def test_metrics_cumulative_count():
metrics = Metrics(counter)
assert metrics.cumulative_count(RollingNumberEvent.THREAD_MAX_ACTIVE) == 0
def test_metrics_rolling_count():
metrics = Metrics(counter)
assert metrics.rolling_count(RollingNumberEvent.SUCCESS) == 0
import time
from hystrix.command import Command
from hystrix.command_metrics import CommandMetrics
from hystrix.command_properties import CommandProperties
from hystrix.strategy.eventnotifier.event_notifier_default import (
EventNotifierDefault)
from .test_command_properties import get_unit_test_properties_setter, as_mock
setter = CommandProperties.setter()
properties = CommandProperties('TEST', setter, 'unit_test_prefix')
event_notifier = EventNotifierDefault.get_instance()
def test_default_command_metrics_key():
class Test(CommandMetrics):
pass
commandmetrics = Test(None, 'command_group', None, properties,
event_notifier)
assert commandmetrics.command_metrics_key == 'TestCommandMetrics'
def test_manual_command_metrics_key():
class Test(CommandMetrics):
command_metrics_key = 'MyTestCommandMetrics'
pass
commandmetrics = Test(None, 'command_group', None, properties,
event_notifier)
def test_boolean_code_default():
setter = CommandProperties.setter()
properties = PropertiesCommandTest('TEST', setter, 'unitTestPrefix')
assert CommandProperties.default_circuit_breaker_force_closed == properties.circuit_breaker_force_closed(
)
def as_mock(setter):
return CommandProperties('TEST', setter, 'unit_test_prefix')
from hystrix.metrics import Metrics
from hystrix.command_properties import CommandProperties
from hystrix.rolling_number import RollingNumber, RollingNumberEvent
setter = CommandProperties.setter()
properties = CommandProperties('TEST', setter, 'unit_test_prefix')
counter = RollingNumber(
properties.metrics_rolling_statistical_window_in_milliseconds(),
properties.metrics_rolling_statistical_window_buckets())
def test_metrics_cumulative_count():
metrics = Metrics(counter)
assert metrics.cumulative_count(RollingNumberEvent.THREAD_MAX_ACTIVE) == 0
def test_metrics_rolling_count():
metrics = Metrics(counter)
assert metrics.rolling_count(RollingNumberEvent.SUCCESS) == 0