def start_service(service_name):
""" Creates a monit configuration file and prompts Monit to start service.
Args:
service_name: The name of the service to start.
"""
logging.info("Starting " + service_name)
watch_name = ""
if service_name == datastore_upgrade.CASSANDRA_WATCH_NAME:
start_cmd = CASSANDRA_EXECUTABLE + " start -p " + PID_FILE
stop_cmd = "/usr/bin/python2 " + APPSCALE_HOME + "/scripts/stop_service.py java cassandra"
watch_name = datastore_upgrade.CASSANDRA_WATCH_NAME
ports = [CASSANDRA_PORT]
match_cmd = cassandra_interface.CASSANDRA_INSTALL_DIR
if service_name == datastore_upgrade.ZK_WATCH_NAME:
zk_server="zookeeper-server"
command = 'service --status-all|grep zookeeper$'
if subprocess.call(command, shell=True) == 0:
zk_server = "zookeeper"
start_cmd = "/usr/sbin/service " + zk_server + " start"
stop_cmd = "/usr/sbin/service " + zk_server + " stop"
watch_name = datastore_upgrade.ZK_WATCH_NAME
match_cmd = "org.apache.zookeeper.server.quorum.QuorumPeerMain"
ports = [zk.DEFAULT_PORT]
monit_app_configuration.create_config_file(watch_name, start_cmd, stop_cmd,
ports, upgrade_flag=True, match_cmd=match_cmd)
if not monit_interface.start(watch_name):
logging.error("Monit was unable to start " + service_name)
return 1
else:
logging.info('Monit configured for {}'.format(service_name))
return 0
def test_start(self):
testing.disable_logging()
flexmock(file_io)\
.should_receive('delete')\
.and_return()
flexmock(subprocess)\
.should_receive('call')\
.and_return(0)
self.assertEqual(True, monit_interface.start("watch_name"))
flexmock(subprocess)\
.should_receive('call')\
.and_return(1)
self.assertEqual(False, monit_interface.start("watch_name"))
def test_start(self):
testing.disable_logging()
flexmock(file_io)\
.should_receive('delete')\
.and_return()
flexmock(subprocess)\
.should_receive('call')\
.and_return(0)
self.assertEqual(True, monit_interface.start("watch_name"))
flexmock(subprocess)\
.should_receive('call')\
.and_return(1)
self.assertEqual(False, monit_interface.start("watch_name"))
def restart_app_instances_for_app(app_name, language):
""" Restarts all instances of a Google App Engine application on this machine.
Args:
app_name: The application ID corresponding to the app to restart.
language: The language the application is written in.
Returns:
True if successful, and False otherwise.
"""
if not misc.is_app_name_valid(app_name):
logging.error("Unable to kill app process %s on because of " \
"invalid name for application" % (app_name))
return False
if language == "java":
remove_conflicting_jars(app_name)
copy_modified_jars(app_name)
logging.info("Restarting application %s" % app_name)
watch = "app___" + app_name
monit_interface.stop(watch)
time.sleep(1)
return monit_interface.start(watch)
def start_service(service_name):
""" Creates a monit configuration file and prompts Monit to start service.
Args:
service_name: The name of the service to start.
"""
logging.info("Starting " + service_name)
watch_name = ""
if service_name == datastore_upgrade.CASSANDRA_WATCH_NAME:
start_cmd = CASSANDRA_EXECUTABLE + " start -p " + PID_FILE
stop_cmd = "/usr/bin/python2 " + APPSCALE_HOME + "/scripts/stop_service.py java cassandra"
watch_name = datastore_upgrade.CASSANDRA_WATCH_NAME
ports = [CASSANDRA_PORT]
match_cmd = cassandra_interface.CASSANDRA_INSTALL_DIR
if service_name == datastore_upgrade.ZK_WATCH_NAME:
zk_server = "zookeeper-server"
command = 'service --status-all|grep zookeeper$'
if subprocess.call(command, shell=True) == 0:
zk_server = "zookeeper"
start_cmd = "/usr/sbin/service " + zk_server + " start"
stop_cmd = "/usr/sbin/service " + zk_server + " stop"
watch_name = datastore_upgrade.ZK_WATCH_NAME
match_cmd = "org.apache.zookeeper.server.quorum.QuorumPeerMain"
ports = [zk.DEFAULT_PORT]
monit_app_configuration.create_config_file(watch_name,
start_cmd,
stop_cmd,
ports,
upgrade_flag=True,
match_cmd=match_cmd)
if not monit_interface.start(watch_name):
logging.error("Monit was unable to start " + service_name)
return 1
else:
logging.info('Monit configured for {}'.format(service_name))
return 0
def run():
""" Starts up cassandra. """
logging.warning("Starting Cassandra.")
monit_interface.start(cassandra_interface.CASSANDRA_MONIT_WATCH_NAME,
is_group=False)
logging.warning("Done!")
def start_app(config):
""" Starts a Google App Engine application on this machine. It
will start it up and then proceed to fetch the main page.
Args:
config: a dictionary that contains
app_name: Name of the application to start
app_port: Port to start on
language: What language the app is written in
load_balancer_ip: Public ip of load balancer
xmpp_ip: IP of XMPP service
dblocations: List of database locations
env_vars: A dict of environment variables that should be passed to the
app.
max_memory: An int that names the maximum amount of memory that this
App Engine app is allowed to consume before being restarted.
Returns:
PID of process on success, -1 otherwise
"""
config = convert_config_from_json(config)
if config == None:
logging.error("Invalid configuration for application")
return BAD_PID
if not misc.is_app_name_valid(config['app_name']):
logging.error("Invalid app name for application: " +\
config['app_name'])
return BAD_PID
logging.info("Starting %s application %s" %
(config['language'], config['app_name']))
start_cmd = ""
stop_cmd = ""
env_vars = config['env_vars']
env_vars['GOPATH'] = '/root/appscale/AppServer/gopath/'
env_vars['GOROOT'] = '/root/appscale/AppServer/goroot/'
watch = "app___" + config['app_name']
if config['language'] == constants.PYTHON27 or \
config['language'] == constants.GO or \
config['language'] == constants.PHP:
start_cmd = create_python27_start_cmd(config['app_name'],
config['load_balancer_ip'],
config['app_port'],
config['load_balancer_ip'],
config['xmpp_ip'])
logging.info(start_cmd)
stop_cmd = create_python27_stop_cmd(config['app_port'])
env_vars.update(
create_python_app_env(config['load_balancer_ip'],
config['app_name']))
elif config['language'] == constants.JAVA:
remove_conflicting_jars(config['app_name'])
copy_successful = copy_modified_jars(config['app_name'])
if not copy_successful:
return BAD_PID
start_cmd = create_java_start_cmd(config['app_name'],
config['app_port'],
config['load_balancer_ip'])
stop_cmd = create_java_stop_cmd(config['app_port'])
env_vars.update(create_java_app_env())
else:
logging.error("Unknown application language %s for appname %s"\
%(config['language'], config['app_name']))
return BAD_PID
logging.info("Start command: " + str(start_cmd))
logging.info("Stop command: " + str(stop_cmd))
logging.info("Environment variables: " + str(env_vars))
monit_app_configuration.create_config_file(str(watch), str(start_cmd),
str(stop_cmd),
[config['app_port']], env_vars,
config['max_memory'])
if not monit_interface.start(watch):
logging.error("Unable to start application server with monit")
return BAD_PID
if not wait_on_app(int(config['app_port'])):
logging.error("Application server did not come up in time, " + \
"removing monit watch")
monit_interface.stop(watch)
return BAD_PID
return 0
"--concurrency=" + str(TaskQueueConfig.CELERY_CONCURRENCY),
"--soft-time-limit=" + str(self.TASK_SOFT_TIME_LIMIT),
"--pidfile=" + self.PID_FILE_LOC + 'celery___' + \
app_id + ".pid",
"--statedb=" + TaskQueueConfig.CELERY_STATE_DIR + 'worker___' + \
app_id + ".db",
"--autoreload -Ofair"]
start_command = str(' '.join(command))
stop_command = self.get_worker_stop_command(app_id)
watch = "celery-" + str(app_id)
monit_app_configuration.create_config_file(
watch,
start_command,
stop_command, [self.CELERY_PORT],
env_vars=self.CELERY_ENV_VARS)
if monit_interface.start(watch):
json_response = {'error': False}
else:
json_response = {
'error': True,
'reason': "Start of monit watch for %s failed" % watch
}
return json.dumps(json_response)
def fetch_queue_stats(self, app_id, http_data):
""" Gets statistics about tasks in queues.
Args:
app_id: The application ID.
http_data: The payload containing the protocol buffer request.
Returns:
def start_app(config):
""" Starts a Google App Engine application on this machine. It
will start it up and then proceed to fetch the main page.
Args:
config: a dictionary that contains
app_name: Name of the application to start
app_port: Port to start on
language: What language the app is written in
load_balancer_ip: Public ip of load balancer
xmpp_ip: IP of XMPP service
env_vars: A dict of environment variables that should be passed to the
app.
max_memory: An int that names the maximum amount of memory that this
App Engine app is allowed to consume before being restarted.
syslog_server: The IP of the syslog server to send the application
logs to. Usually it's the login private IP.
Returns:
PID of process on success, -1 otherwise
"""
config = convert_config_from_json(config)
if config is None:
logging.error("Invalid configuration for application")
return BAD_PID
if not misc.is_app_name_valid(config['app_name']):
logging.error("Invalid app name for application: " +
config['app_name'])
return BAD_PID
logging.info("Starting %s application %s" %
(config['language'], config['app_name']))
env_vars = config['env_vars']
env_vars['GOPATH'] = '/root/appscale/AppServer/gopath/'
env_vars['GOROOT'] = '/root/appscale/AppServer/goroot/'
watch = "app___" + config['app_name']
match_cmd = ""
if config['language'] == constants.PYTHON27 or \
config['language'] == constants.GO or \
config['language'] == constants.PHP:
start_cmd = create_python27_start_cmd(config['app_name'],
config['load_balancer_ip'],
config['app_port'],
config['load_balancer_ip'],
config['xmpp_ip'])
stop_cmd = create_python27_stop_cmd(config['app_port'])
env_vars.update(
create_python_app_env(config['load_balancer_ip'],
config['app_name']))
elif config['language'] == constants.JAVA:
remove_conflicting_jars(config['app_name'])
copy_successful = copy_modified_jars(config['app_name'])
if not copy_successful:
return BAD_PID
# Account for MaxPermSize (~170MB), the parent process (~50MB), and thread
# stacks (~20MB).
max_heap = config['max_memory'] - 250
if max_heap <= 0:
return BAD_PID
start_cmd = create_java_start_cmd(config['app_name'],
config['app_port'],
config['load_balancer_ip'], max_heap)
match_cmd = "java -ea -cp.*--port={}.*{}".format(
str(config['app_port']),
os.path.dirname(
locate_dir("/var/apps/" + config['app_name'] + "/app/",
"WEB-INF")))
stop_cmd = create_java_stop_cmd(config['app_port'])
env_vars.update(create_java_app_env(config['app_name']))
else:
logging.error("Unknown application language %s for appname %s" \
% (config['language'], config['app_name']))
return BAD_PID
logging.info("Start command: " + str(start_cmd))
logging.info("Stop command: " + str(stop_cmd))
logging.info("Environment variables: " + str(env_vars))
# Set the syslog_server is specified.
syslog_server = ""
if 'syslog_server' in config:
syslog_server = config['syslog_server']
monit_app_configuration.create_config_file(str(watch),
str(start_cmd),
str(stop_cmd),
[config['app_port']],
env_vars,
config['max_memory'],
syslog_server,
appscale_info.get_private_ip(),
match_cmd=match_cmd)
# We want to tell monit to start the single process instead of the
# group, since monit can get slow if there are quite a few processes in
# the same group.
full_watch = "{}-{}".format(str(watch), str(config['app_port']))
if not monit_interface.start(full_watch, is_group=False):
logging.warning("Monit was unable to start {}:{}".format(
str(config['app_name']), config['app_port']))
return BAD_PID
# Since we are going to wait, possibly for a long time for the
# application to be ready, we do it in a thread.
threading.Thread(target=add_routing,
args=(config['app_name'], config['app_port'])).start()
if 'log_size' in config.keys():
log_size = config['log_size']
else:
if config['app_name'] == APPSCALE_DASHBOARD_ID:
log_size = DASHBOARD_LOG_SIZE
else:
log_size = APP_LOG_SIZE
if not setup_logrotate(config['app_name'], watch, log_size):
logging.error(
"Error while setting up log rotation for application: {}".format(
config['app_name']))
return 0
"--concurrency=" + str(TaskQueueConfig.CELERY_CONCURRENCY),
"--soft-time-limit=" + str(self.TASK_SOFT_TIME_LIMIT),
"--pidfile=" + self.PID_FILE_LOC + 'celery___' + \
app_id + ".pid",
"--statedb=" + TaskQueueConfig.CELERY_STATE_DIR + 'worker___' + \
app_id + ".db",
"--autoreload"]
start_command = str(' '.join(command))
stop_command = self.get_worker_stop_command(app_id)
watch = "celery-" + str(app_id)
monit_app_configuration.create_config_file(watch,
start_command,
stop_command,
[self.CELERY_PORT],
env_vars=self.CELERY_ENV_VARS)
if monit_interface.start(watch):
json_response = {'error': False}
else:
json_response = {'error': True,
'reason': "Start of monit watch for %s failed" % watch}
return json.dumps(json_response)
def fetch_queue_stats(self, app_id, http_data):
""" Gets statistics about tasks in queues.
Args:
app_id: The application ID.
http_data: The payload containing the protocol buffer request.
Returns:
A tuple of a encoded response, error code, and error detail.
"""
def start_app(config):
""" Starts a Google App Engine application on this machine. It
will start it up and then proceed to fetch the main page.
Args:
config: a dictionary that contains
app_name: Name of the application to start
app_port: Port to start on
language: What language the app is written in
load_balancer_ip: Public ip of load balancer
xmpp_ip: IP of XMPP service
env_vars: A dict of environment variables that should be passed to the
app.
max_memory: An int that names the maximum amount of memory that this
App Engine app is allowed to consume before being restarted.
syslog_server: The IP of the syslog server to send the application
logs to. Usually it's the login private IP.
Returns:
PID of process on success, -1 otherwise
"""
config = convert_config_from_json(config)
if config is None:
logging.error("Invalid configuration for application")
return BAD_PID
if not misc.is_app_name_valid(config['app_name']):
logging.error("Invalid app name for application: " +
config['app_name'])
return BAD_PID
logging.info("Starting %s application %s" %
(config['language'], config['app_name']))
env_vars = config['env_vars']
env_vars['GOPATH'] = '/root/appscale/AppServer/gopath/'
env_vars['GOROOT'] = '/root/appscale/AppServer/goroot/'
watch = "app___" + config['app_name']
if config['language'] == constants.PYTHON27 or \
config['language'] == constants.GO or \
config['language'] == constants.PHP:
start_cmd = create_python27_start_cmd(config['app_name'],
config['load_balancer_ip'],
config['app_port'],
config['load_balancer_ip'],
config['xmpp_ip'])
stop_cmd = create_python27_stop_cmd(config['app_port'])
env_vars.update(
create_python_app_env(config['load_balancer_ip'],
config['app_name']))
elif config['language'] == constants.JAVA:
remove_conflicting_jars(config['app_name'])
copy_successful = copy_modified_jars(config['app_name'])
if not copy_successful:
return BAD_PID
start_cmd = create_java_start_cmd(config['app_name'],
config['app_port'],
config['load_balancer_ip'])
stop_cmd = create_java_stop_cmd(config['app_port'])
env_vars.update(create_java_app_env(config['app_name']))
else:
logging.error("Unknown application language %s for appname %s" \
% (config['language'], config['app_name']))
return BAD_PID
logging.info("Start command: " + str(start_cmd))
logging.info("Stop command: " + str(stop_cmd))
logging.info("Environment variables: " + str(env_vars))
# Set the syslog_server is specified.
syslog_server = ""
if 'syslog_server' in config:
syslog_server = config['syslog_server']
monit_app_configuration.create_config_file(str(watch), str(start_cmd),
str(stop_cmd),
[config['app_port']], env_vars,
config['max_memory'],
syslog_server,
appscale_info.get_private_ip())
if not monit_interface.start(watch):
logging.error("Unable to start application server with monit")
return BAD_PID
if not wait_on_app(int(config['app_port'])):
logging.error("Application server did not come up in time, "
"removing monit watch")
monit_interface.stop(watch)
return BAD_PID
threading.Thread(target=add_routing,
args=(config['app_name'], config['app_port'])).start()
if 'log_size' in config.keys():
log_size = config['log_size']
else:
if config['app_name'] == APPSCALE_DASHBOARD_ID:
log_size = DASHBOARD_LOG_SIZE
else:
log_size = APP_LOG_SIZE
if not setup_logrotate(config['app_name'], watch, log_size):
logging.error(
"Error while setting up log rotation for application: {}".format(
config['app_name']))
return 0
def run():
""" Starts up cassandra. """
logging.warning("Starting Cassandra.")
monit_interface.start(cassandra_interface.CASSANDRA_MONIT_WATCH_NAME,
is_group=False)
logging.warning("Done!")
def start_app(config):
""" Starts a Google App Engine application on this machine. It
will start it up and then proceed to fetch the main page.
Args:
config: a dictionary that contains
app_name: Name of the application to start
app_port: Port to start on
language: What language the app is written in
load_balancer_ip: Public ip of load balancer
xmpp_ip: IP of XMPP service
env_vars: A dict of environment variables that should be passed to the
app.
max_memory: An int that names the maximum amount of memory that this
App Engine app is allowed to consume before being restarted.
syslog_server: The IP of the syslog server to send the application
logs to. Usually it's the login private IP.
Returns:
PID of process on success, -1 otherwise
"""
config = convert_config_from_json(config)
if config is None:
logging.error("Invalid configuration for application")
return BAD_PID
if not misc.is_app_name_valid(config['app_name']):
logging.error("Invalid app name for application: " + config['app_name'])
return BAD_PID
logging.info("Starting %s application %s" % (
config['language'], config['app_name']))
env_vars = config['env_vars']
env_vars['GOPATH'] = '/root/appscale/AppServer/gopath/'
env_vars['GOROOT'] = '/root/appscale/AppServer/goroot/'
watch = "app___" + config['app_name']
match_cmd = ""
if config['language'] == constants.PYTHON27 or \
config['language'] == constants.GO or \
config['language'] == constants.PHP:
start_cmd = create_python27_start_cmd(
config['app_name'],
config['load_balancer_ip'],
config['app_port'],
config['load_balancer_ip'],
config['xmpp_ip'])
stop_cmd = create_python27_stop_cmd(config['app_port'])
env_vars.update(create_python_app_env(
config['load_balancer_ip'],
config['app_name']))
elif config['language'] == constants.JAVA:
remove_conflicting_jars(config['app_name'])
copy_successful = copy_modified_jars(config['app_name'])
if not copy_successful:
return BAD_PID
# Account for MaxPermSize (~170MB), the parent process (~50MB), and thread
# stacks (~20MB).
max_heap = config['max_memory'] - 250
if max_heap <= 0:
return BAD_PID
start_cmd = create_java_start_cmd(
config['app_name'],
config['app_port'],
config['load_balancer_ip'],
max_heap
)
match_cmd = "java -ea -cp.*--port={}.*{}".format(str(config['app_port']),
os.path.dirname(locate_dir("/var/apps/" + config['app_name'] + "/app/",
"WEB-INF")))
stop_cmd = create_java_stop_cmd(config['app_port'])
env_vars.update(create_java_app_env(config['app_name']))
else:
logging.error("Unknown application language %s for appname %s" \
% (config['language'], config['app_name']))
return BAD_PID
logging.info("Start command: " + str(start_cmd))
logging.info("Stop command: " + str(stop_cmd))
logging.info("Environment variables: " + str(env_vars))
# Set the syslog_server is specified.
syslog_server = ""
if 'syslog_server' in config:
syslog_server = config['syslog_server']
monit_app_configuration.create_config_file(
str(watch),
str(start_cmd),
str(stop_cmd),
[config['app_port']],
env_vars,
config['max_memory'],
syslog_server,
appscale_info.get_private_ip(),
match_cmd=match_cmd)
# We want to tell monit to start the single process instead of the
# group, since monit can get slow if there are quite a few processes in
# the same group.
full_watch = "{}-{}".format(str(watch), str(config['app_port']))
if not monit_interface.start(full_watch, is_group=False):
logging.warning("Monit was unable to start {}:{}".
format(str(config['app_name']), config['app_port']))
return BAD_PID
# Since we are going to wait, possibly for a long time for the
# application to be ready, we do it in a thread.
threading.Thread(target=add_routing,
args=(config['app_name'], config['app_port'])).start()
if 'log_size' in config.keys():
log_size = config['log_size']
else:
if config['app_name'] == APPSCALE_DASHBOARD_ID:
log_size = DASHBOARD_LOG_SIZE
else:
log_size = APP_LOG_SIZE
if not setup_logrotate(config['app_name'], watch, log_size):
logging.error("Error while setting up log rotation for application: {}".
format(config['app_name']))
return 0
def run():
""" Starts up cassandra. """
logging.warning("Starting Zookeeper.")
monit_interface.start('zookeeper-9999', is_group=False)
logging.warning("Done!")
def start_app(config):
""" Starts a Google App Engine application on this machine. It
will start it up and then proceed to fetch the main page.
Args:
config: a dictionary that contains
app_name: Name of the application to start
app_port: Port to start on
language: What language the app is written in
load_balancer_ip: Public ip of load balancer
xmpp_ip: IP of XMPP service
env_vars: A dict of environment variables that should be passed to the
app.
max_memory: An int that names the maximum amount of memory that this
App Engine app is allowed to consume before being restarted.
syslog_server: The IP of the syslog server to send the application
logs to. Usually it's the login private IP.
Returns:
PID of process on success, -1 otherwise
"""
config = convert_config_from_json(config)
if config == None:
logging.error("Invalid configuration for application")
return BAD_PID
if not misc.is_app_name_valid(config['app_name']):
logging.error("Invalid app name for application: " + config['app_name'])
return BAD_PID
logging.info("Starting %s application %s" % (
config['language'], config['app_name']))
env_vars = config['env_vars']
env_vars['GOPATH'] = '/var/lib/appscale/AppServer/gopath/'
env_vars['GOROOT'] = '/var/lib/appscale/AppServer/goroot/'
watch = "app___" + config['app_name']
if config['language'] == constants.PYTHON27 or \
config['language'] == constants.GO or \
config['language'] == constants.PHP:
start_cmd = create_python27_start_cmd(
config['app_name'],
config['load_balancer_ip'],
config['app_port'],
config['load_balancer_ip'],
config['xmpp_ip'])
stop_cmd = create_python27_stop_cmd(config['app_port'])
env_vars.update(create_python_app_env(
config['load_balancer_ip'],
config['app_name']))
elif config['language'] == constants.JAVA:
remove_conflicting_jars(config['app_name'])
copy_successful = copy_modified_jars(config['app_name'])
if not copy_successful:
return BAD_PID
start_cmd = create_java_start_cmd(
config['app_name'],
config['app_port'],
config['load_balancer_ip'])
stop_cmd = create_java_stop_cmd(config['app_port'])
env_vars.update(create_java_app_env(config['app_name']))
else:
logging.error("Unknown application language %s for appname %s" \
% (config['language'], config['app_name']))
return BAD_PID
logging.info("Start command: " + str(start_cmd))
logging.info("Stop command: " + str(stop_cmd))
logging.info("Environment variables: " + str(env_vars))
# Set the syslog_server is specified.
syslog_server = ""
if 'syslog_server' in config:
syslog_server = config['syslog_server']
monit_app_configuration.create_config_file(
str(watch),
str(start_cmd),
str(stop_cmd),
[config['app_port']],
env_vars,
config['max_memory'],
syslog_server,
appscale_info.get_private_ip())
if not monit_interface.start(watch):
logging.error("Unable to start application server with monit")
return BAD_PID
if not wait_on_app(int(config['app_port'])):
logging.error("Application server did not come up in time, "
"removing monit watch")
monit_interface.stop(watch)
return BAD_PID
threading.Thread(target=add_routing,
args=(config['app_name'], config['app_port'])).start()
if 'log_size' in config.keys():
log_size = config['log_size']
else:
if config['app_name'] == APPSCALE_DASHBOARD_ID:
log_size = DASHBOARD_LOG_SIZE
else:
log_size = APP_LOG_SIZE
if not setup_logrotate(config['app_name'], watch, log_size):
logging.error("Error while setting up log rotation for application: {}".
format(config['app_name']))
return 0
def start_app(config):
""" Starts a Google App Engine application on this machine. It
will start it up and then proceed to fetch the main page.
Args:
config: a dictionary that contains
app_name: Name of the application to start
app_port: Port to start on
language: What language the app is written in
load_balancer_ip: Public ip of load balancer
xmpp_ip: IP of XMPP service
dblocations: List of database locations
env_vars: A dict of environment variables that should be passed to the
app.
max_memory: An int that names the maximum amount of memory that this
App Engine app is allowed to consume before being restarted.
Returns:
PID of process on success, -1 otherwise
"""
config = convert_config_from_json(config)
if config == None:
logging.error("Invalid configuration for application")
return BAD_PID
if not misc.is_app_name_valid(config['app_name']):
logging.error("Invalid app name for application: " +\
config['app_name'])
return BAD_PID
logging.info("Starting %s application %s"%(config['language'],
config['app_name']))
start_cmd = ""
stop_cmd = ""
env_vars = config['env_vars']
env_vars['GOPATH'] = '/root/appscale/AppServer/gopath/'
env_vars['GOROOT'] = '/root/appscale/AppServer/goroot/'
watch = "app___" + config['app_name']
if config['language'] == constants.PYTHON27 or \
config['language'] == constants.GO or \
config['language'] == constants.PHP:
start_cmd = create_python27_start_cmd(config['app_name'],
config['load_balancer_ip'],
config['app_port'],
config['load_balancer_ip'],
config['xmpp_ip'])
logging.info(start_cmd)
stop_cmd = create_python27_stop_cmd(config['app_port'])
env_vars.update(create_python_app_env(config['load_balancer_ip'],
config['app_name']))
elif config['language'] == constants.JAVA:
remove_conflicting_jars(config['app_name'])
copy_successful = copy_modified_jars(config['app_name'])
if not copy_successful:
return BAD_PID
start_cmd = create_java_start_cmd(config['app_name'],
config['app_port'],
config['load_balancer_ip'])
stop_cmd = create_java_stop_cmd(config['app_port'])
env_vars.update(create_java_app_env())
else:
logging.error("Unknown application language %s for appname %s"\
%(config['language'], config['app_name']))
return BAD_PID
logging.info("Start command: " + str(start_cmd))
logging.info("Stop command: " + str(stop_cmd))
logging.info("Environment variables: " +str(env_vars))
monit_app_configuration.create_config_file(str(watch),
str(start_cmd),
str(stop_cmd),
[config['app_port']],
env_vars,
config['max_memory'])
if not monit_interface.start(watch):
logging.error("Unable to start application server with monit")
return BAD_PID
if not wait_on_app(int(config['app_port'])):
logging.error("Application server did not come up in time, " + \
"removing monit watch")
monit_interface.stop(watch)
return BAD_PID
return 0
def run():
""" Starts up cassandra. """
logging.warning("Starting Zookeeper.")
monit_interface.start('zookeeper-9999', is_group=False)
logging.warning("Done!")
