def _pack_json_msg(self, msg):
"""Qpid cannot serialize dicts containing strings longer than 65535
characters. This function dumps the message content to a JSON
string, which Qpid is able to handle.
:param msg: May be either a Qpid Message object or a bare dict.
:returns: A Qpid Message with its content field JSON encoded.
"""
try:
msg.content = jsonutils.dumps(msg.content)
except AttributeError:
# Need to have a Qpid message so we can set the content_type.
msg = qpid_messaging.Message(jsonutils.dumps(msg))
msg.content_type = JSON_CONTENT_TYPE
return msg
def _pack_json_msg(self, msg):
"""Qpid cannot serialize dicts containing strings longer than 65535
characters. This function dumps the message content to a JSON
string, which Qpid is able to handle.
:param msg: May be either a Qpid Message object or a bare dict.
:returns: A Qpid Message with its content field JSON encoded.
"""
try:
msg.content = jsonutils.dumps(msg.content)
except AttributeError:
# Need to have a Qpid message so we can set the content_type.
msg = qpid_messaging.Message(jsonutils.dumps(msg))
msg.content_type = JSON_CONTENT_TYPE
return msg
def encode(self, version, target, json_msg):
"""This is the main encoding function.
It takes a target and a message and returns a tuple consisting of a
JSON serialized metadata object, a JSON serialized (and optionally
encrypted) message, and a signature.
:param version: the current envelope version
:param target: The name of the target service (usually with hostname)
:param json_msg: a serialized json message object
"""
ticket = self._get_ticket(target)
metadata = jsonutils.dumps({
'source': self._name,
'destination': target,
'timestamp': time.time(),
'nonce': _get_nonce(),
'esek': ticket.esek,
'encryption': self._encrypt
})
message = json_msg
if self._encrypt:
message = self._crypto.encrypt(ticket.ekey, message)
signature = self._crypto.sign(ticket.skey,
version + metadata + message)
return (metadata, message, signature)
def __init__(self, conf, session, node_name, node_opts=None):
"""Init the Publisher class with the exchange_name, routing_key,
and other options
"""
self.sender = None
self.session = session
if conf.qpid_topology_version == 1:
addr_opts = {
"create": "always",
"node": {
"type": "topic",
"x-declare": {
"durable": False,
# auto-delete isn't implemented for exchanges in qpid,
# but put in here anyway
"auto-delete": True,
},
},
}
if node_opts:
addr_opts["node"]["x-declare"].update(node_opts)
self.address = "%s ; %s" % (node_name, jsonutils.dumps(addr_opts))
elif conf.qpid_topology_version == 2:
self.address = node_name
else:
raise_invalid_topology_version()
self.reconnect(session)
def scale_cluster(self, cluster, instances):
processor = self._get_blueprint_processor(cluster)
cluster_spec = clusterspec.ClusterSpec(
json.dumps(processor.blueprint), cluster=cluster)
rpm = self._get_rpm_uri(cluster_spec)
servers = []
for instance in instances:
host_role = utils.get_host_role(instance)
servers.append(h.HadoopServer(instance,
cluster_spec.node_groups
[host_role],
ambari_rpm=rpm))
ambari_info = self.get_ambari_info(cluster_spec,
self._get_servers(cluster))
for server in servers:
self._spawn('Ambari provisioning thread',
server.provision_ambari, ambari_info)
self._wait_for_host_registrations(self._get_num_hosts(cluster),
ambari_info)
# now add the hosts and the component
self._add_hosts_and_components(cluster_spec, servers,
ambari_info, cluster.name)
self._install_and_start_components(cluster.name, servers, ambari_info)
def format(self, record):
message = {'message': record.getMessage(),
'asctime': self.formatTime(record, self.datefmt),
'name': record.name,
'msg': record.msg,
'args': record.args,
'levelname': record.levelname,
'levelno': record.levelno,
'pathname': record.pathname,
'filename': record.filename,
'module': record.module,
'lineno': record.lineno,
'funcname': record.funcName,
'created': record.created,
'msecs': record.msecs,
'relative_created': record.relativeCreated,
'thread': record.thread,
'thread_name': record.threadName,
'process_name': record.processName,
'process': record.process,
'traceback': None}
if hasattr(record, 'extra'):
message['extra'] = record.extra
if record.exc_info:
message['traceback'] = self.formatException(record.exc_info)
return jsonutils.dumps(message)
def default(self, data):
def sanitizer(obj):
if isinstance(obj, datetime.datetime):
_dtime = obj - datetime.timedelta(microseconds=obj.microsecond)
return _dtime.isoformat()
return unicode(obj)
return jsonutils.dumps(data, default=sanitizer)
def _add_configurations_to_cluster(self, cluster_spec, ambari_public_ip,
name):
configs = cluster_spec.configurations
config_url = 'http://{0}:8080/api/v1/clusters/{1}'.format(
ambari_public_ip, name)
body = {}
clusters = {}
body['Clusters'] = clusters
for config_name in configs:
config_body = {}
clusters['desired_config'] = config_body
config_body['type'] = config_name
#TODO(jspeidel): hard coding for now
config_body['tag'] = 'v1'
config_body['properties'] = configs[config_name]
result = requests.put(config_url,
data=json.dumps(body),
auth=(self.ambari_user,
self.ambari_password))
if result.status_code != 200:
LOG.warning('Set configuration command failed. {0}'.format(
result.text))
return False
return True
def _add_configurations_to_cluster(
self, cluster_spec, ambari_info, name):
configs = cluster_spec.configurations
config_url = 'http://{0}/api/v1/clusters/{1}'.format(
ambari_info.get_address(), name)
body = {}
clusters = {}
body['Clusters'] = clusters
for config_name in configs:
if config_name == 'ambari':
continue
config_body = {}
clusters['desired_config'] = config_body
config_body['type'] = config_name
#TODO(jspeidel): hard coding for now
config_body['tag'] = 'v1'
config_body['properties'] = configs[config_name]
result = requests.put(config_url, data=json.dumps(body), auth=(
ambari_info.user, ambari_info.password))
if result.status_code != 200:
LOG.warning(
'Set configuration command failed. {0}'.format(
result.text))
return False
return True
def scale_cluster(self, cluster, instances):
processor = self._get_blueprint_processor(cluster)
cluster_spec = clusterspec.ClusterSpec(
json.dumps(processor.blueprint), cluster=cluster)
rpm = self._get_rpm_uri(cluster_spec)
servers = []
for instance in instances:
host_role = utils.get_host_role(instance)
servers.append(h.HadoopServer(instance,
cluster_spec.node_groups
[host_role],
ambari_rpm=rpm))
ambari_info = self.get_ambari_info(cluster_spec)
self._update_ambari_info_credentials(cluster_spec, ambari_info)
for server in servers:
self._spawn('Ambari provisioning thread',
server.provision_ambari, ambari_info)
self._wait_for_host_registrations(self._get_num_hosts(cluster),
ambari_info)
# now add the hosts and the component
self._add_hosts_and_components(cluster_spec, servers,
ambari_info, cluster.name)
self._install_and_start_components(cluster.name, servers, ambari_info)
def format(self, record):
message = {'message': record.getMessage(),
'asctime': self.formatTime(record, self.datefmt),
'name': record.name,
'msg': record.msg,
'args': record.args,
'levelname': record.levelname,
'levelno': record.levelno,
'pathname': record.pathname,
'filename': record.filename,
'module': record.module,
'lineno': record.lineno,
'funcname': record.funcName,
'created': record.created,
'msecs': record.msecs,
'relative_created': record.relativeCreated,
'thread': record.thread,
'thread_name': record.threadName,
'process_name': record.processName,
'process': record.process,
'traceback': None}
if hasattr(record, 'extra'):
message['extra'] = record.extra
if record.exc_info:
message['traceback'] = self.formatException(record.exc_info)
return jsonutils.dumps(message)
def get_ticket(self, source, target, crypto, key):
# prepare metadata
md = {
'requestor': source,
'target': target,
'timestamp': time.time(),
'nonce': struct.unpack('Q', os.urandom(8))[0]
}
metadata = base64.b64encode(jsonutils.dumps(md))
# sign metadata
signature = crypto.sign(key, metadata)
# HTTP request
reply = self._get_ticket({
'metadata': metadata,
'signature': signature
})
# verify reply
signature = crypto.sign(key, (reply['metadata'] + reply['ticket']))
if signature != reply['signature']:
raise InvalidEncryptedTicket(md['source'], md['destination'])
md = jsonutils.loads(base64.b64decode(reply['metadata']))
if ((md['source'] != source or md['destination'] != target
or md['expiration'] < time.time())):
raise InvalidEncryptedTicket(md['source'], md['destination'])
# return ticket data
tkt = jsonutils.loads(crypto.decrypt(key, reply['ticket']))
return tkt, md['expiration']
def __init__(self, session, node_name, node_opts=None):
"""Init the Publisher class with the exchange_name, routing_key,
and other options
"""
self.sender = None
self.session = session
addr_opts = {
"create": "always",
"node": {
"type": "topic",
"x-declare": {
"durable": False,
# auto-delete isn't implemented for exchanges in qpid,
# but put in here anyway
"auto-delete": True,
},
},
}
if node_opts:
addr_opts["node"]["x-declare"].update(node_opts)
self.address = "%s ; %s" % (node_name, jsonutils.dumps(addr_opts))
self.reconnect(session)
def default(self, data):
def sanitizer(obj):
if isinstance(obj, datetime.datetime):
_dtime = obj - datetime.timedelta(microseconds=obj.microsecond)
return _dtime.isoformat()
return unicode(obj)
return jsonutils.dumps(data, default=sanitizer)
def serialize_msg(raw_msg):
# NOTE(russellb) See the docstring for _RPC_ENVELOPE_VERSION for more
# information about this format.
msg = {
_VERSION_KEY: _RPC_ENVELOPE_VERSION,
_MESSAGE_KEY: jsonutils.dumps(raw_msg)
}
return msg
def notify(_context, message):
"""Notifies the recipient of the desired event given the model.
Log notifications using OpenStack's default logging system.
"""
priority = message.get("priority", CONF.default_notification_level)
priority = priority.lower()
logger = logging.getLogger("savanna.openstack.common.notification.%s" % message["event_type"])
getattr(logger, priority)(jsonutils.dumps(message))
def __init__(self, conf, session, callback, node_name, node_opts,
link_name, link_opts):
"""Declare a queue on an amqp session.
'session' is the amqp session to use
'callback' is the callback to call when messages are received
'node_name' is the first part of the Qpid address string, before ';'
'node_opts' will be applied to the "x-declare" section of "node"
in the address string.
'link_name' goes into the "name" field of the "link" in the address
string
'link_opts' will be applied to the "x-declare" section of "link"
in the address string.
"""
self.callback = callback
self.receiver = None
self.session = None
if conf.qpid_topology_version == 1:
addr_opts = {
"create": "always",
"node": {
"type": "topic",
"x-declare": {
"durable": True,
"auto-delete": True,
},
},
"link": {
"name": link_name,
"durable": True,
"x-declare": {
"durable": False,
"auto-delete": True,
"exclusive": False,
},
},
}
addr_opts["node"]["x-declare"].update(node_opts)
elif conf.qpid_topology_version == 2:
addr_opts = {
"link": {
"x-declare": {
"auto-delete": True,
},
},
}
else:
raise_invalid_topology_version()
addr_opts["link"]["x-declare"].update(link_opts)
self.address = "%s ; %s" % (node_name, jsonutils.dumps(addr_opts))
self.connect(session)
def __init__(self, conf, session, callback, node_name, node_opts,
link_name, link_opts):
"""Declare a queue on an amqp session.
'session' is the amqp session to use
'callback' is the callback to call when messages are received
'node_name' is the first part of the Qpid address string, before ';'
'node_opts' will be applied to the "x-declare" section of "node"
in the address string.
'link_name' goes into the "name" field of the "link" in the address
string
'link_opts' will be applied to the "x-declare" section of "link"
in the address string.
"""
self.callback = callback
self.receiver = None
self.session = None
if conf.qpid_topology_version == 1:
addr_opts = {
"create": "always",
"node": {
"type": "topic",
"x-declare": {
"durable": True,
"auto-delete": True,
},
},
"link": {
"name": link_name,
"durable": True,
"x-declare": {
"durable": False,
"auto-delete": True,
"exclusive": False,
},
},
}
addr_opts["node"]["x-declare"].update(node_opts)
elif conf.qpid_topology_version == 2:
addr_opts = {
"link": {
"x-declare": {
"auto-delete": True,
},
},
}
else:
raise_invalid_topology_version()
addr_opts["link"]["x-declare"].update(link_opts)
self.address = "%s ; %s" % (node_name, jsonutils.dumps(addr_opts))
self.connect(session)
def notify(_context, message):
"""Notifies the recipient of the desired event given the model.
Log notifications using OpenStack's default logging system.
"""
priority = message.get('priority', CONF.default_notification_level)
priority = priority.lower()
logger = logging.getLogger('savanna.openstack.common.notification.%s' %
message['event_type'])
getattr(logger, priority)(jsonutils.dumps(message))
def _serialize(data):
"""Serialization wrapper.
We prefer using JSON, but it cannot encode all types.
Error if a developer passes us bad data.
"""
try:
return jsonutils.dumps(data, ensure_ascii=True)
except TypeError:
with excutils.save_and_reraise_exception():
LOG.error(_("JSON serialization failed."))
def _serialize(data):
"""Serialization wrapper.
We prefer using JSON, but it cannot encode all types.
Error if a developer passes us bad data.
"""
try:
return jsonutils.dumps(data, ensure_ascii=True)
except TypeError:
with excutils.save_and_reraise_exception():
LOG.error(_("JSON serialization failed."))
def _do_get(self, url, request):
req_kwargs = dict()
req_kwargs['headers'] = dict()
req_kwargs['headers']['User-Agent'] = self.USER_AGENT
req_kwargs['headers']['Content-Type'] = 'application/json'
req_kwargs['data'] = jsonutils.dumps({'request': request})
if self.timeout is not None:
req_kwargs['timeout'] = self.timeout
try:
resp = requests.get(url, **req_kwargs)
except requests.ConnectionError as e:
err = "Unable to establish connection. %s" % e
raise CommunicationError(url, err)
return resp
def configure_cluster(self, cluster):
# take the user inputs from the cluster and node groups and convert
# to a ambari blueprint
processor = self._get_blueprint_processor(cluster)
# NOTE: for the time being we are going to ignore the node group
# level configurations. we are not currently
# defining node level configuration items (i.e. scope='cluster' in
# all cases for returned configs)
#create a cloud context
#TODO(jmaron): is base host name really necessary any longer?
#cloud_ctx = ClusterContext(None, LOG)
#self._add_instances_to_cluster_context (cloud_ctx, cluster)
self.create_cluster(cluster, json.dumps(processor.blueprint))
def configure_cluster(self, cluster):
# take the user inputs from the cluster and node groups and convert
# to a ambari blueprint
processor = self._get_blueprint_processor(cluster)
# NOTE: for the time being we are going to ignore the node group
# level configurations. we are not currently
# defining node level configuration items (i.e. scope='cluster' in
# all cases for returned configs)
#create a cloud context
#TODO(jmaron): is base host name really necessary any longer?
#cloud_ctx = ClusterContext(None, LOG)
#self._add_instances_to_cluster_context (cloud_ctx, cluster)
self.create_cluster(cluster, json.dumps(processor.blueprint))
def _generate_host_manifest(self, servers):
host_manifest = {}
hosts = []
host_id = 1
for server in servers:
hosts.append({'host_id': host_id,
'hostname': server.hostname,
'role': server.role,
'vm_image': server.nova_info.image,
'vm_flavor': server.nova_info.flavor,
'public_ip': server.management_ip,
'private_ip': server.internal_ip})
host_id += 1
host_manifest['hosts'] = hosts
return json.dumps(host_manifest).strip('{}')
def _generate_host_manifest(self):
host_manifest = {}
hosts = []
host_id = 1
for server in self.servers:
instance_info = n_helper.get_instance_info(server)
hosts.append({'host_id': host_id,
'hostname': server.hostname,
'role': utils.get_host_role(server),
'vm_image': instance_info.image,
'vm_flavor': instance_info.flavor,
'public_ip': server.management_ip,
'private_ip': server.internal_ip})
host_id += 1
host_manifest['hosts'] = hosts
return json.dumps(host_manifest).strip('{}')
def _generate_host_manifest(self, servers):
host_manifest = {}
hosts = []
host_id = 1
for server in servers:
instance_info = n_helper.get_instance_info(server)
hosts.append({
'host_id': host_id,
'hostname': server.hostname,
'role': utils.get_host_role(server),
'vm_image': instance_info.image,
'vm_flavor': instance_info.flavor,
'public_ip': server.management_ip,
'private_ip': server.internal_ip
})
host_id += 1
host_manifest['hosts'] = hosts
return json.dumps(host_manifest).strip('{}')
def configure_cluster(self, cluster):
# take the user inputs from the cluster and node groups and convert
# to a ambari blueprint
processor = bp.BlueprintProcessor(json.load(
open(os.path.join(os.path.dirname(__file__), 'resources',
'default-cluster.template'), "r")))
processor.process_user_inputs(cluster.cluster_configs)
processor.process_node_groups(cluster.node_groups)
# NOTE: for the time being we are going to ignore the node group
# level configurations. we are not currently
# defining node level configuration items (i.e. scope='cluster' in
# all cases for returned configs)
#create a cloud context
#TODO(jmaron): is base host name really necessary any longer?
#cloud_ctx = ClusterContext(None, LOG)
#self._add_instances_to_cluster_context (cloud_ctx, cluster)
self.create_cluster(cluster, json.dumps(processor.blueprint))
def _add_configurations_to_cluster(self, cluster_spec, ambari_public_ip, name):
configs = cluster_spec.configurations
config_url = "http://{0}:8080/api/v1/clusters/{1}".format(ambari_public_ip, name)
body = {}
clusters = {}
body["Clusters"] = clusters
for config_name in configs:
config_body = {}
clusters["desired_config"] = config_body
config_body["type"] = config_name
# TODO(jspeidel): hard coding for now
config_body["tag"] = "v1"
config_body["properties"] = configs[config_name]
result = requests.put(config_url, data=json.dumps(body), auth=(self.ambari_user, self.ambari_password))
if result.status_code != 200:
LOG.warning("Set configuration command failed. {0}".format(result.text))
return False
return True
def _generate_host_manifest(self, servers):
host_manifest = {}
hosts = []
host_id = 1
for server in servers:
instance_info = n_helper.get_instance_info(server)
hosts.append(
{
"host_id": host_id,
"hostname": server.hostname,
"role": utils.get_host_role(server),
"vm_image": instance_info.image,
"vm_flavor": instance_info.flavor,
"public_ip": server.management_ip,
"private_ip": server.internal_ip,
}
)
host_id += 1
host_manifest["hosts"] = hosts
return json.dumps(host_manifest).strip("{}")
def serialize_remote_exception(failure_info, log_failure=True):
"""Prepares exception data to be sent over rpc.
Failure_info should be a sys.exc_info() tuple.
"""
tb = traceback.format_exception(*failure_info)
failure = failure_info[1]
if log_failure:
LOG.error(_("Returning exception %s to caller"),
six.text_type(failure))
LOG.error(tb)
kwargs = {}
if hasattr(failure, 'kwargs'):
kwargs = failure.kwargs
# NOTE(matiu): With cells, it's possible to re-raise remote, remote
# exceptions. Lets turn it back into the original exception type.
cls_name = str(failure.__class__.__name__)
mod_name = str(failure.__class__.__module__)
if (cls_name.endswith(_REMOTE_POSTFIX)
and mod_name.endswith(_REMOTE_POSTFIX)):
cls_name = cls_name[:-len(_REMOTE_POSTFIX)]
mod_name = mod_name[:-len(_REMOTE_POSTFIX)]
data = {
'class': cls_name,
'module': mod_name,
'message': six.text_type(failure),
'tb': tb,
'args': failure.args,
'kwargs': kwargs
}
json_data = jsonutils.dumps(data)
return json_data
def _add_configurations_to_cluster(self, cluster_spec, ambari_public_ip,
name):
configs = cluster_spec.configurations
add_configuration_url = 'http://{0}:8080/api/v1/clusters/{1}'.format(
ambari_public_ip, name)
body = {}
clusters = {}
body['Clusters'] = clusters
for config_name in configs:
config_body = {}
clusters['desired_config'] = config_body
config_body['type'] = config_name
#TODO(jspeidel): hard coding for now
config_body['tag'] = 'v1'
config_body['properties'] = configs[config_name]
result = requests.put(add_configuration_url, data=json.dumps(body),
auth=('admin', 'admin'))
if result.status_code != 200:
LOG.warning(
'Set configuration command failed. {0}'.format(
result.text))
return False
return True
def serialize_remote_exception(failure_info, log_failure=True):
"""Prepares exception data to be sent over rpc.
Failure_info should be a sys.exc_info() tuple.
"""
tb = traceback.format_exception(*failure_info)
failure = failure_info[1]
if log_failure:
LOG.error(_("Returning exception %s to caller"), six.text_type(failure))
LOG.error(tb)
kwargs = {}
if hasattr(failure, "kwargs"):
kwargs = failure.kwargs
# NOTE(matiu): With cells, it's possible to re-raise remote, remote
# exceptions. Lets turn it back into the original exception type.
cls_name = str(failure.__class__.__name__)
mod_name = str(failure.__class__.__module__)
if cls_name.endswith(_REMOTE_POSTFIX) and mod_name.endswith(_REMOTE_POSTFIX):
cls_name = cls_name[: -len(_REMOTE_POSTFIX)]
mod_name = mod_name[: -len(_REMOTE_POSTFIX)]
data = {
"class": cls_name,
"module": mod_name,
"message": six.text_type(failure),
"tb": tb,
"args": failure.args,
"kwargs": kwargs,
}
json_data = jsonutils.dumps(data)
return json_data
def configure_cluster(self, cluster):
# take the user inputs from the cluster and node groups and convert
# to a ambari blueprint
processor = bp.BlueprintProcessor(
json.load(
open(
os.path.join(os.path.dirname(__file__), 'resources',
'default-cluster.template'), "r")))
processor.process_user_inputs(
self._map_to_user_inputs('1.3.0', cluster.cluster_configs))
processor.process_node_groups(cluster.node_groups)
# NOTE: for the time being we are going to ignore the node group
# level configurations. we are not currently
# defining node level configuration items (i.e. scope='cluster' in
# all cases for returned configs)
#create a cloud context
#TODO(jmaron): is base host name really necessary any longer?
#cloud_ctx = ClusterContext(None, LOG)
#self._add_instances_to_cluster_context (cloud_ctx, cluster)
self.create_cluster(cluster, json.dumps(processor.blueprint))
def serialize_msg(raw_msg):
# NOTE(russellb) See the docstring for _RPC_ENVELOPE_VERSION for more
# information about this format.
msg = {_VERSION_KEY: _RPC_ENVELOPE_VERSION, _MESSAGE_KEY: jsonutils.dumps(raw_msg)}
return msg
def process_bind_param(self, value, dialect):
if value is not None:
value = jsonutils.dumps(value)
return value
