def deploy_helper(codebase_version,
expected_version,
existing_service=None):
with self.database.transaction():
try:
ServiceManager.createOrUpdateServiceWithCodebase(
service_schema.Codebase.createFromFiles(
getTestServiceModule(codebase_version)),
"test_service.service.Service",
serviceName,
targetCount=1)
except Exception:
pass
if existing_service:
self.assertTrue(
self.database.waitForCondition(
lambda: not existing_service.connection.exists(),
timeout=5.0))
self.waitForCount(1)
with self.database.transaction():
s = TestServiceLastTimestamp.aliveServices()[0]
self.assertEqual(s.version, expected_version)
return s
def installServices(self):
with self.database.transaction():
ServiceManager.createOrUpdateService(Task.TaskService,
"TaskService",
target_count=1,
gbRamUsed=0,
coresUsed=0)
ServiceManager.createOrUpdateService(Task.TaskDispatchService,
"TaskDispatchService",
target_count=1,
gbRamUsed=0,
coresUsed=0)
self.waitRunning("TaskService")
self.waitRunning("TaskDispatchService")
with open(os.path.join(ownDir, "test_files", "TestModule1.py"),
"r") as f:
files = {"TestModule1.py": f.read()}
with self.database.transaction():
self.testService1Object = ServiceManager.createOrUpdateServiceWithCodebase(
service_schema.Codebase.createFromFiles(files),
"TestModule1.TestService1", "TestService1", 0)
self.testService1Codebase = self.testService1Object.codebase.instantiate(
)
self.service1Conn = self.newDbConnection()
self.service1Conn.setSerializationContext(
self.testService1Codebase.serializationContext)
self.service1Conn.subscribeToType(Task.Task)
self.service1Conn.subscribeToType(Task.TaskStatus)
self.service1Conn.subscribeToType(
self.testService1Codebase.getClassByName("TestModule1.Record"))
def test_redeploy_hanging_services(self):
with self.database.transaction():
ServiceManager.createOrUpdateService(HangingService,
"HangingService",
target_count=10)
self.waitForCount(10)
with self.database.view():
instances = service_schema.ServiceInstance.lookupAll()
orig_codebase = instances[0].codebase
with self.database.transaction():
ServiceManager.createOrUpdateServiceWithCodebase(
service_schema.Codebase.createFromFiles(
getTestServiceModule(2)), "test_service.service.Service",
"HangingService", 10)
# this should force a redeploy.
maxProcessesEver = 0
for i in range(40):
maxProcessesEver = max(
maxProcessesEver,
len(psutil.Process().children()[0].children()))
time.sleep(.1)
self.database.flush()
# after 2 seconds, we should be redeployed, but give Travis a bit more time
if os.environ.get('TRAVIS_CI', None) is not None:
time.sleep(10.0)
with self.database.view():
instances_redeployed = service_schema.ServiceInstance.lookupAll()
self.assertEqual(len(instances), 10)
self.assertEqual(len(instances_redeployed), 10)
self.assertEqual(
len(set(instances).intersection(set(instances_redeployed))), 0)
self.assertTrue(orig_codebase != instances_redeployed[0].codebase)
# and we never became too big!
self.assertLess(maxProcessesEver, 11)
def _main(argv):
configureLogging()
parser = argparse.ArgumentParser("Install and configure services.")
parser.add_argument("--hostname", default=os.getenv("ODB_HOST", "localhost"), required=False)
parser.add_argument("--port", type=int, default=int(os.getenv("ODB_PORT", 8000)), required=False)
parser.add_argument("--auth", type=str, default=os.getenv("ODB_AUTH_TOKEN", ""), required=False, help="Auth token to use to connect.")
subparsers = parser.add_subparsers()
connections_parser = subparsers.add_parser('connections', help='list live connections')
connections_parser.set_defaults(command='connections')
install_parser = subparsers.add_parser('install', help='install a service')
install_parser.set_defaults(command='install')
install_parser.add_argument("--path", action='append', dest='paths')
install_parser.add_argument("--class")
install_parser.add_argument("--name", required=False)
install_parser.add_argument("--placement", required=False, default='Any', choices=['Any','Master','Worker'])
install_parser.add_argument("--singleton", required=False, action='store_true')
reset_parser = subparsers.add_parser('reset', help='reset a service''s boot count')
reset_parser.set_defaults(command='reset')
reset_parser.add_argument("name")
configure_parser = subparsers.add_parser('configure', help='configure a service')
configure_parser.set_defaults(command='configure')
configure_parser.add_argument("name")
configure_parser.add_argument("args", nargs=argparse.REMAINDER)
list_parser = subparsers.add_parser('list', help='list installed services')
list_parser.set_defaults(command='list')
instances_parser = subparsers.add_parser('instances', help='list running service instances')
instances_parser.set_defaults(command='instances')
hosts_parser = subparsers.add_parser('hosts', help='list running hosts')
hosts_parser.set_defaults(command='hosts')
start_parser = subparsers.add_parser('start', help='Start (or change target replicas for) a service')
start_parser.set_defaults(command='start')
start_parser.add_argument("name")
start_parser.add_argument("--count", type=int, default=1, required=False)
stop_parser = subparsers.add_parser('stop', help='Stop a service')
stop_parser.set_defaults(command='stop')
stop_parser.add_argument("name")
parsedArgs = parser.parse_args(argv[1:])
db = connect(parsedArgs.hostname, parsedArgs.port, parsedArgs.auth)
db.subscribeToSchema(core_schema, service_schema, lazySubscription=True)
if parsedArgs.command == 'connections':
table = [['Connection ID']]
with db.view():
for c in sorted(core_schema.Connection.lookupAll(), key=lambda c: c._identity):
table.append([c._identity])
print(formatTable(table))
if parsedArgs.command == 'configure':
try:
with db.transaction():
s = service_schema.Service.lookupAny(name=parsedArgs.name)
svcClass = s.instantiateServiceType()
svcClass.configureFromCommandline(db, s, parsedArgs.args)
except Exception as e:
traceback.print_exc()
return 1
if parsedArgs.command == 'reset':
with db.transaction():
service = service_schema.Service.lookupAny(name=parsedArgs.name)
service.timesBootedUnsuccessfully = 0
if parsedArgs.command == 'install':
if parsedArgs.paths:
paths = parsedArgs.paths
else:
paths = [findGitParent(os.getcwd())]
gbRamUsed = 1
coresUsed = 1
with db.transaction():
fullClassname = getattr(parsedArgs, 'class')
modulename, classname = fullClassname.rsplit(".",1)
if modulename.startswith("object_database"):
def _getobject(modname, attribute):
mod = __import__(modname, fromlist=[attribute])
return mod.__dict__[attribute]
actualClass = _getobject(modulename, classname)
if not isinstance(actualClass, type):
print("Named class %s is not a type." % fullClassname)
return 1
if not issubclass(actualClass, ServiceBase):
print("Named class %s is not a ServiceBase subclass." % fullClassname)
return 1
coresUsed = actualClass.coresUsed
gbRamUsed = actualClass.gbRamUsed
ServiceManager.createOrUpdateService(actualClass, classname,
placement=parsedArgs.placement, isSingleton=parsedArgs.singleton,
coresUsed=coresUsed, gbRamUsed=gbRamUsed
)
else:
codebase = service_schema.Codebase.create(paths)
#make sure the codebase is importable, etc
module = codebase.instantiate(modulename)
if module is None:
print("Can't find", module, "in the codebase")
actualClass = module.__dict__.get(classname, None)
if actualClass is None:
print("Can't find", module, "in module", modulename)
if actualClass is None:
print("Can't find", classname, "in the codebase")
return 1
if not isinstance(actualClass, type):
print("Named class %s is not a type." % fullClassname)
return 1
if not issubclass(actualClass, ServiceBase):
print("Named class %s is not a ServiceBase subclass." % fullClassname)
return 1
coresUsed = actualClass.coresUsed
gbRamUsed = actualClass.gbRamUsed
if not parsedArgs.name:
name = fullClassname.split(".")[-1]
else:
name = parsedArgs.name
ServiceManager.createOrUpdateServiceWithCodebase(codebase, fullClassname, name, targetCount=None,
placement=parsedArgs.placement, coresUsed=coresUsed, gbRamUsed=gbRamUsed)
if parsedArgs.command == 'list':
table = [['Service', 'Codebase', 'Module', 'Class', 'Placement', 'TargetCount', 'Cores', 'RAM']]
with db.view():
for s in sorted(service_schema.Service.lookupAll(), key=lambda s:s.name):
table.append([
s.name,
str(s.codebase),
s.service_module_name,
s.service_class_name,
s.placement,
str(s.target_count),
s.coresUsed,
s.gbRamUsed
])
print(formatTable(table))
if parsedArgs.command == 'instances':
table = [['Service', 'Host', 'Connection', 'State']]
with db.view():
for s in sorted(service_schema.ServiceInstance.lookupAll(), key=lambda s:(s.service.name, s.host.hostname, s.state)):
table.append([
s.service.name,
s.host.hostname,
s.connection if s.connection.exists() else "<DEAD>",
s.state
])
print(formatTable(table))
if parsedArgs.command == 'hosts':
table = [['Connection', 'IsMaster', 'Hostname', 'RAM USAGE', 'CORE USAGE', 'SERVICE COUNT']]
with db.view():
for s in sorted(service_schema.ServiceHost.lookupAll(), key=lambda s:s.hostname):
table.append([
s.connection._identity,
str(s.isMaster),
s.hostname,
"%.1f / %.1f" % (s.gbRamUsed, s.maxGbRam),
"%s / %s" % (s.coresUsed, s.maxCores),
str(len(service_schema.ServiceInstance.lookupAll(host=s)))
])
print(formatTable(table))
if parsedArgs.command == 'start':
with db.transaction():
s = service_schema.Service.lookupAny(name=parsedArgs.name)
if not s:
print("Can't find a service named", s)
return 1
s.target_count = max(parsedArgs.count, 0)
if parsedArgs.command == 'stop':
with db.transaction():
s = service_schema.Service.lookupAny(name=parsedArgs.name)
if not s:
print("Can't find a service named", s)
return 1
s.target_count = 0
return 0
def main(argv=None):
if argv is not None:
argv = sys.argv
token = genToken()
port = 8020
loglevel_name = 'INFO'
with tempfile.TemporaryDirectory() as tmpDirName:
try:
server = start_service_manager(tmpDirName, port, token,
loglevel_name=loglevel_name)
database = connect("localhost", port, token, retry=True)
database.subscribeToSchema(core_schema, service_schema,
active_webservice_schema)
with database.transaction():
service = ServiceManager.createOrUpdateService(
ActiveWebService, "ActiveWebService", target_count=0)
ActiveWebService.configureFromCommandline(
database, service,
['--port', '8000',
'--host', '0.0.0.0',
'--log-level', loglevel_name]
)
ActiveWebService.setLoginPlugin(
database,
service,
LoginIpPlugin,
[None],
config={'company_name': 'A Testing Company'}
)
with database.transaction():
ServiceManager.startService("ActiveWebService", 1)
with database.transaction():
service = ServiceManager.createOrUpdateService(
UninitializableService, "UninitializableService",
target_count=1
)
with database.transaction():
service = ServiceManager.createOrUpdateService(
HappyService, "HappyService", target_count=1
)
with database.transaction():
service = ServiceManager.createOrUpdateService(
GraphDisplayService, "GraphDisplayService", target_count=1
)
with database.transaction():
service = ServiceManager.createOrUpdateService(
TextEditorService, "TextEditorService", target_count=1
)
with database.transaction():
service = ServiceManager.createOrUpdateService(
DropdownTestService, "DropdownTestService", target_count=1
)
with database.transaction():
service = ServiceManager.createOrUpdateService(
BigGridTestService, "BigGridTestService", target_count=1
)
with database.transaction():
ServiceManager.createOrUpdateServiceWithCodebase(
service_schema.Codebase.createFromFiles({
'test_service/__init__.py': '',
'test_service/service.py': textwrap.dedent("""
from object_database.service_manager.ServiceBase import ServiceBase
class TestService(ServiceBase):
gbRamUsed = 0
coresUsed = 0
def initialize(self):
with self.db.transaction():
self.runtimeConfig.serviceInstance.statusMessage = "Loaded"
def doWork(self, shouldStop):
shouldStop.wait()
def display(self, queryParams=None):
return "test service display message"
""")
}),
"test_service.service.TestService",
"TestService",
10
)
print("SERVER IS BOOTED")
while True:
time.sleep(.1)
finally:
server.terminate()
server.wait()
return 0