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How to use get_container_name method in localstack

Best Python code snippet using localstack_python

guestutils.py

Source:guestutils.py

...21	return 'default'22def get_service_name():23	# returns the friendly name of the service the container is a member of.24	return os.environ['SERVICE_NAME']25def get_container_name():26	# returns the friendly name of the container itself.27	return os.environ['CONTAINER_NAME']28def get_container_host_address():29	# returns the IP address or hostname of the host of the container. Useful if your application needs to advertise itself to some service discovery system.30	return os.environ['CONTAINER_HOST_ADDRESS']31	service = get_service_name()32	all_service_instances = client.read('/' + service).value33	return all_service_instances[get_container_name()]34def get_container_internal_address():35	# returns the IP address assigned to the container itself by Docker (its private IP address).36	# host_ip = get_container_host_address()37	# print 'this is the modifIED VERSION'38	# dockerclient = docker.Client(base_url = "tcp://"+host_ip+":4243", 39	# 	version = '1.10', 40	# 	timeout=10)41	# details =  dockerclient.inspect_container(get_container_name())42	# return str(details['NetworkSettings']['IPAddress'])43	return socket.gethostbyname(socket.gethostname())44def get_port(name, default = 'default_port'):45	# will return the exposed (internal) port number of a given named port for the current container instance. This is useful to set configuration parameters for example.46	# 'port_mapping': {'rpc': {'external': ('0.0.0.0', '9160/tcp'), 'exposed': '9160/tcp'}, 'storage': {'external': ('0.0.0.0', '7000/tcp'), 'exposed': '7000/tcp'}47	if default != 'default_port':48		return get_specific_exposed_port(get_service_name(), get_container_name(), name, default)49	return get_specific_exposed_port(get_service_name(), get_container_name(), name)50def get_node_list(service, ports=[], minimum=1, labels = []):51	# It takes in a service name and an optional list of port names and returns the list of IP addresses/hostname of the containers of that service. For each port specified, in order, it will append :<port number> to each host with the external port number. For example, if you want to return the list of ZooKeeper endpoints with their client ports:52	# get_node_list('zookeeper', ports=['client']) -> ['c414.ore1.domain.com:2181', 'c415.ore1.domain.com:2181']53	nodes = []54	all_service_instances = client.read('/' + service).value55	all_service_instances = ast.literal_eval(all_service_instances)56	for key in all_service_instances.keys():57		instance = all_service_instances[key]58		#59		# only proceed if the labels are correct60		# @LABELS61		#62		fits_query=True63		for label in labels:64			if label not in instance['labels']:65				fits_query = False66		if fits_query:67			node = instance['instance_host']68			portlist = ""69			for port in ports:70				p = get_specific_port(instance['service_name'], instance['instance_name'], port)71				p = ":" + p72				portlist = portlist + p73			nodes.append(str(node + portlist))74	return nodes75def get_specific_host(service, container):76	# which can be used to return the hostname or IP address of a specific container from a given service, and77	all_service_instances = client.read('/' + service).value78	all_service_instances = ast.literal_eval(all_service_instances)79	try:80		return all_service_instances[container]['instance_host']81	except: 82		return None83def get_specific_port(service, container, port, default='default'):84	# to retrieve the external port number of a specific named port of a given container.85	all_service_instances = client.read('/'+service).value86	all_service_instances = ast.literal_eval(all_service_instances)87	my_instance = all_service_instances[container]88	port_mappings = my_instance['port_mapping']89	port_mapping = port_mappings.get(port)90	if port_mapping is None:91		return default92	return port_mapping['external'][1].replace('/tcp', '')93def get_specific_exposed_port(service, container, port, default='default'):94	# to retrieve the exposed (internal) port number of a specific named port of a given container.95	all_service_instances = client.read('/'+service).value96	all_service_instances = ast.literal_eval(all_service_instances)97	print all_service_instances.keys()98	my_instance = all_service_instances[container]99	port_mappings = my_instance['port_mapping']100	port_mapping = port_mappings.get(port)101	if port_mapping is None:102		return default103	return port_mapping['exposed'].replace('/tcp', '')104def test_all():105	try:106		print 'get_environment_name():'107		print get_environment_name()108	except Exception, e:109		print e.__doc__110		print e.message111		print 'failed'112	try:113		print 'get_service_name():'114		print get_service_name()115	except Exception, e:116		print e.__doc__117		print e.message118		print 'failed'119	try:120		print 'get_container_name():'121		print get_container_name()122	except Exception, e:123		print e.__doc__124		print e.message125		print 'failed'126	try:127		print 'get_container_host_address():'128		print get_container_host_address()129	except Exception, e:130		print e.__doc__131		print e.message132		print 'failed'133	try:134		print 'get_container_internal_address():'135		print get_container_internal_address()...

run.py

Source:run.py

...47    servers = os.environ['ZOOKEEPER_SERVER_IDS'].split(',')48    for server in servers:49        node, id = server.split(':')50        conf['server.{}'.format(id)] = build_node_repr(node)51        if node == get_container_name():52            ZOOKEEPER_NODE_ID = id53# Verify that the number of declared nodes matches the size of the cluster.54ZOOKEEPER_NODE_COUNT = len(get_node_list(get_service_name()))55ZOOKEEPER_CLUSTER_SIZE = len(56    [i for i in conf.keys() if i.startswith('server.')])57# If no ZOOKEEPER_SERVER_IDS is defined, we expect to be in single-node mode so58# no more than one node can be declared in the cluster.59if ZOOKEEPER_CLUSTER_SIZE == 0 and ZOOKEEPER_NODE_COUNT != 1:60    sys.stderr.write(('Missing ZOOKEEPER_SERVER_IDS declaration for ' +61                      '{}-node ZooKeeper cluster!\n')62                     .format(ZOOKEEPER_NODE_COUNT))63    sys.exit(1)64# If we got nodes from ZOOKEEPER_SERVER_IDS, we expect exactly the same number65# of nodes declared in the cluster.66if ZOOKEEPER_CLUSTER_SIZE > 0 and \67        ZOOKEEPER_CLUSTER_SIZE != ZOOKEEPER_NODE_COUNT:68    sys.stderr.write(('Mismatched number of nodes between ' +69                      'ZOOKEEPER_SERVER_IDS ({}) and the declared ' +70                      'cluster ({})!\n')71                     .format(ZOOKEEPER_CLUSTER_SIZE), ZOOKEEPER_NODE_COUNT)72    sys.exit(1)73# Write out the ZooKeeper configuration file.74with open(ZOOKEEPER_CONFIG_FILE, 'w+') as f:75    for entry in conf.iteritems():76        f.write("%s=%s\n" % entry)77# Setup the logging configuration.78with open(ZOOKEEPER_LOG_CONFIG_FILE, 'w+') as f:79    f.write("""# Log4j configuration, logs to rotating file80log4j.rootLogger=INFO,R81log4j.appender.R=org.apache.log4j.RollingFileAppender82log4j.appender.R.File=/var/log/%s/%s.log83log4j.appender.R.MaxFileSize=100MB84log4j.appender.R.MaxBackupIndex=1085log4j.appender.R.layout=org.apache.log4j.PatternLayout86log4j.appender.R.layout.ConversionPattern=%s87""" % (get_service_name(), get_container_name(), LOG_PATTERN))88# Write out the 'myid' file in the data directory if in cluster mode.89if ZOOKEEPER_NODE_ID:90    if not os.path.exists(ZOOKEEPER_DATA_DIR):91        os.makedirs(ZOOKEEPER_DATA_DIR, mode=0750)92    with open(os.path.join(ZOOKEEPER_DATA_DIR, 'myid'), 'w+') as f:93        f.write('%s\n' % ZOOKEEPER_NODE_ID)94    sys.stderr.write(95        'Starting {}, node id#{} of a {}-node ZooKeeper cluster...\n'96        .format(get_container_name(), ZOOKEEPER_NODE_ID,97                ZOOKEEPER_CLUSTER_SIZE))98else:99    sys.stderr.write('Starting {} as a single-node ZooKeeper cluster...\n'100                     .format(get_container_name()))101jvmflags = [102    '-server',103    '-showversion',104    '-Dvisualvm.display.name="{}/{}"'.format(105        get_environment_name(), get_container_name()),106]107jmx_port = get_port('jmx', -1)108if jmx_port != -1:109    jvmflags += [110        '-Djava.rmi.server.hostname={}'.format(get_container_host_address()),111        '-Dcom.sun.management.jmxremote.port={}'.format(jmx_port),112        '-Dcom.sun.management.jmxremote.rmi.port={}'.format(jmx_port),113        '-Dcom.sun.management.jmxremote.authenticate=false',114        '-Dcom.sun.management.jmxremote.local.only=false',115        '-Dcom.sun.management.jmxremote.ssl=false',116    ]117os.environ['JVMFLAGS'] = ' '.join(jvmflags) + ' ' + os.environ.get('JVM_OPTS', '')118# Start ZooKeeper119os.execl('bin/zkServer.sh', 'zookeeper', 'start-foreground')

admin.py

Source:admin.py

...14            return obj.relation.product.name15        else:16            return None17    get_product_name.short_description = "Product"18    def get_container_name(self, obj):19        if(obj.relation is not None):20            return obj.relation.container.name21        else:22            return None23    get_container_name.short_description = "Container"24    def get_form(self, request, obj=None, **kwargs):25        form = super(ProductTagAdmin, self).get_form(request, obj, **kwargs)26        form.base_fields['relation'].label_from_instance = lambda obj: "({}) {} : {}".format(obj.id, obj.product.name, obj.container.name)27        return form28class ProductSpotAdmin(admin.ModelAdmin):29    list_display = ('get_shelf_name', 'position', 'get_tag_tag')30    def get_tag_tag(self, obj):31        if(obj.last_tag is not None):32            return obj.last_tag.tag33        else:34            return None35    get_tag_tag.short_description = "Last tag"36    def get_shelf_name(self, obj):37        return obj.shelf.name38    get_shelf_name.short_description = "Shelf"39    def get_form(self, request, obj=None, **kwargs):40        form = super(ProductSpotAdmin, self).get_form(request, obj, **kwargs)41        form.base_fields['last_tag'].label_from_instance = lambda obj: "({}) {}".format(obj.id, obj.tag)42        form.base_fields['shelf'].label_from_instance = lambda obj: "({}) {}".format(obj.id, obj.name)            43        return form44    45class ProductContainerRelationAdmin(admin.ModelAdmin):46    list_display = ('get_container_name', 'get_product_name', 'max_measurement')47    def get_container_name(self, obj):48        return obj.container.name49    get_container_name.short_description = "Container"50    def get_product_name(self, obj):51        return obj.product.name52    get_product_name.short_description = "Product"53    pass54    def get_form(self, request, obj=None, **kwargs):55            form = super(ProductContainerRelationAdmin, self).get_form(request, obj, **kwargs)56            form.base_fields['container'].label_from_instance = lambda obj: "({}) {}".format(obj.id, obj.name)57            form.base_fields['product'].label_from_instance = lambda obj: "({}) {}".format(obj.id, obj.name)            58            return form59    60class ProductSpotStateAdmin(admin.ModelAdmin):61    pass...

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