def _dump_events_to_files(events_with_added_uuid):
current_time_millis = int(round(time.time() * 1000))
for event in events_with_added_uuid:
save_file(
os.path.join(EVENTS_TMP_DIR, "%s_%s" % (current_time_millis, event["uuid"])),
json.dumps(event["event"]),
)
def exec_lambda_code(script, handler_function='handler', lambda_cwd=None, lambda_env=None):
if lambda_cwd or lambda_env:
exec_mutex.acquire()
if lambda_cwd:
previous_cwd = os.getcwd()
os.chdir(lambda_cwd)
sys.path = [lambda_cwd] + sys.path
if lambda_env:
previous_env = dict(os.environ)
os.environ.update(lambda_env)
# generate lambda file name
lambda_id = 'l_%s' % short_uid()
lambda_file = LAMBDA_SCRIPT_PATTERN.replace('*', lambda_id)
save_file(lambda_file, script)
# delete temporary .py and .pyc files on exit
TMP_FILES.append(lambda_file)
TMP_FILES.append('%sc' % lambda_file)
try:
handler_module = imp.load_source(lambda_id, lambda_file)
module_vars = handler_module.__dict__
except Exception as e:
LOG.error('Unable to exec: %s %s' % (script, traceback.format_exc()))
raise e
finally:
if lambda_cwd or lambda_env:
if lambda_cwd:
os.chdir(previous_cwd)
sys.path.pop(0)
if lambda_env:
os.environ = previous_env
exec_mutex.release()
return module_vars[handler_function]
def download_and_extract(archive_url,
target_dir,
retries=0,
sleep=3,
tmp_archive=None):
mkdir(target_dir)
tmp_archive = tmp_archive or new_tmp_file()
if not os.path.exists(tmp_archive):
# create temporary placeholder file, to avoid duplicate parallel downloads
save_file(tmp_archive, '')
for i in range(retries + 1):
try:
download(archive_url, tmp_archive)
break
except Exception:
time.sleep(sleep)
_, ext = os.path.splitext(tmp_archive)
if ext == '.zip':
unzip(tmp_archive, target_dir)
elif ext == '.gz' or ext == '.bz2':
untar(tmp_archive, target_dir)
else:
raise Exception('Unsupported archive format: %s' % ext)
def install_dynamodb_local():
if not os.path.exists(INSTALL_DIR_DDB):
LOGGER.info(
'Downloading and installing local DynamoDB server. This may take some time.'
)
mkdir(INSTALL_DIR_DDB)
# download and extract archive
download_and_extract_with_retry(DYNAMODB_JAR_URL, TMP_ARCHIVE_DDB,
INSTALL_DIR_DDB)
# fix for Alpine, otherwise DynamoDBLocal fails with:
# DynamoDBLocal_lib/libsqlite4java-linux-amd64.so: __memcpy_chk: symbol not found
if is_alpine():
ddb_libs_dir = '%s/DynamoDBLocal_lib' % INSTALL_DIR_DDB
patched_marker = '%s/alpine_fix_applied' % ddb_libs_dir
if not os.path.exists(patched_marker):
patched_lib = (
'https://rawgit.com/bhuisgen/docker-alpine/master/alpine-dynamodb/'
+
'rootfs/usr/local/dynamodb/DynamoDBLocal_lib/libsqlite4java-linux-amd64.so'
)
patched_jar = (
'https://rawgit.com/bhuisgen/docker-alpine/master/alpine-dynamodb/'
+
'rootfs/usr/local/dynamodb/DynamoDBLocal_lib/sqlite4java.jar')
run("curl -L -o %s/libsqlite4java-linux-amd64.so '%s'" %
(ddb_libs_dir, patched_lib))
run("curl -L -o %s/sqlite4java.jar '%s'" %
(ddb_libs_dir, patched_jar))
save_file(patched_marker, '')
def get_machine_id():
global MACHINE_ID
if MACHINE_ID:
return MACHINE_ID
# determine MACHINE_ID from config files
configs_map = {}
config_file_tmp = get_config_file_tempdir()
config_file_home = get_config_file_homedir()
for config_file in (config_file_home, config_file_tmp):
if config_file:
local_configs = load_file(config_file)
local_configs = json.loads(to_str(local_configs))
configs_map[config_file] = local_configs
if 'machine_id' in local_configs:
MACHINE_ID = local_configs['machine_id']
break
# if we can neither find NOR create the config files, fall back to process id
if not configs_map:
return PROCESS_ID
# assign default id if empty
if not MACHINE_ID:
MACHINE_ID = short_uid()
# update MACHINE_ID in all config files
for config_file, configs in configs_map.items():
configs['machine_id'] = MACHINE_ID
save_file(config_file, json.dumps(configs))
return MACHINE_ID
def install_dynamodb_local():
if OVERWRITE_DDB_FILES_IN_DOCKER and in_docker():
rm_rf(INSTALL_DIR_DDB)
is_in_alpine = is_alpine()
if not os.path.exists(INSTALL_PATH_DDB_JAR):
log_install_msg('DynamoDB')
# download and extract archive
tmp_archive = os.path.join(tempfile.gettempdir(), 'localstack.ddb.zip')
dynamodb_url = DYNAMODB_JAR_URL_ALPINE if is_in_alpine else DYNAMODB_JAR_URL
download_and_extract_with_retry(dynamodb_url, tmp_archive,
INSTALL_DIR_DDB)
# fix logging configuration for DynamoDBLocal
log4j2_config = """<Configuration status="WARN">
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
</Console>
</Appenders>
<Loggers>
<Root level="WARN"><AppenderRef ref="Console"/></Root>
</Loggers>
</Configuration>"""
log4j2_file = os.path.join(INSTALL_DIR_DDB, 'log4j2.xml')
save_file(log4j2_file, log4j2_config)
run('cd "%s" && zip -u DynamoDBLocal.jar log4j2.xml || true' %
INSTALL_DIR_DDB)
def set_archive_code(code, lambda_name, zip_file_content=None):
# get metadata
lambda_arn = func_arn(lambda_name)
lambda_details = arn_to_lambda[lambda_arn]
is_local_mount = code.get('S3Bucket') == BUCKET_MARKER_LOCAL
# Stop/remove any containers that this arn uses.
LAMBDA_EXECUTOR.cleanup(lambda_arn)
if is_local_mount:
# Mount or use a local folder lambda executors can reference
# WARNING: this means we're pointing lambda_cwd to a local path in the user's
# file system! We must ensure that there is no data loss (i.e., we must *not* add
# this folder to TMP_FILES or similar).
return code['S3Key']
# get file content
zip_file_content = zip_file_content or get_zip_bytes(code)
# Save the zip file to a temporary file that the lambda executors can reference
code_sha_256 = base64.standard_b64encode(hashlib.sha256(zip_file_content).digest())
lambda_details.get_version('$LATEST')['CodeSize'] = len(zip_file_content)
lambda_details.get_version('$LATEST')['CodeSha256'] = code_sha_256.decode('utf-8')
tmp_dir = '%s/zipfile.%s' % (config.TMP_FOLDER, short_uid())
mkdir(tmp_dir)
tmp_file = '%s/%s' % (tmp_dir, LAMBDA_ZIP_FILE_NAME)
save_file(tmp_file, zip_file_content)
TMP_FILES.append(tmp_dir)
lambda_details.cwd = tmp_dir
return tmp_dir
def start_sqs(port=None, asynchronous=False, update_listener=None):
port = port or config.PORT_SQS
install_elasticmq()
backend_port = DEFAULT_PORT_SQS_BACKEND
# create config file
config_params = """
include classpath("application.conf")
node-address {
protocol = http
host = "%s"
port = %s
context-path = ""
}
rest-sqs {
enabled = true
bind-port = %s
bind-hostname = "0.0.0.0"
sqs-limits = strict
}
""" % (LOCALSTACK_HOSTNAME, port, backend_port)
config_file = os.path.join(TMP_FOLDER, 'sqs.%s.conf' % short_uid())
TMP_FILES.append(config_file)
save_file(config_file, config_params)
# start process
cmd = ('java -Dconfig.file=%s -Xmx%s -jar %s/elasticmq-server.jar' %
(config_file, MAX_HEAP_SIZE, INSTALL_DIR_ELASTICMQ))
print('Starting mock SQS (%s port %s)...' % (get_service_protocol(), port))
start_proxy_for_service('sqs', port, backend_port, update_listener)
return do_run(cmd, asynchronous)
def exec_lambda_code(script, handler_function='handler', lambda_cwd=None, lambda_env=None):
if lambda_cwd or lambda_env:
exec_mutex.acquire()
if lambda_cwd:
previous_cwd = os.getcwd()
os.chdir(lambda_cwd)
sys.path = [lambda_cwd] + sys.path
if lambda_env:
previous_env = dict(os.environ)
os.environ.update(lambda_env)
# generate lambda file name
lambda_id = 'l_%s' % short_uid()
lambda_file = LAMBDA_SCRIPT_PATTERN.replace('*', lambda_id)
save_file(lambda_file, script)
# delete temporary .py and .pyc files on exit
TMP_FILES.append(lambda_file)
TMP_FILES.append('%sc' % lambda_file)
try:
handler_module = imp.load_source(lambda_id, lambda_file)
module_vars = handler_module.__dict__
except Exception as e:
LOG.error('Unable to exec: %s %s' % (script, traceback.format_exc()))
raise e
finally:
if lambda_cwd or lambda_env:
if lambda_cwd:
os.chdir(previous_cwd)
sys.path.pop(0)
if lambda_env:
os.environ = previous_env
exec_mutex.release()
return module_vars[handler_function]
def get_java_handler(zip_file_content, handler, main_file):
"""Creates a Java handler from an uploaded ZIP or JAR.
:type zip_file_content: bytes
:param zip_file_content: ZIP file bytes.
:type handler: str
:param handler: The lambda handler path.
:type main_file: str
:param main_file: Filepath to the uploaded ZIP or JAR file.
:returns: function or flask.Response
"""
if not is_jar_archive(zip_file_content):
with zipfile.ZipFile(BytesIO(zip_file_content)) as zip_ref:
jar_entries = [e for e in zip_ref.infolist() if e.filename.endswith('.jar')]
if len(jar_entries) != 1:
raise ClientError('Expected exactly one *.jar entry in zip file, found %s' % len(jar_entries))
zip_file_content = zip_ref.read(jar_entries[0].filename)
LOG.info('Found jar file %s with %s bytes in Lambda zip archive' %
(jar_entries[0].filename, len(zip_file_content)))
main_file = new_tmp_file()
save_file(main_file, zip_file_content)
if is_jar_archive(zip_file_content):
def execute(event, context):
result, log_output = lambda_executors.EXECUTOR_LOCAL.execute_java_lambda(
event, context, handler=handler, main_file=main_file)
return result
return execute, zip_file_content
raise ClientError(error_response(
'Unable to extract Java Lambda handler - file is not a valid zip/jar file', 400, error_type='ValidationError'))
def get_lambda_code_param(params, _include_arch=False, **kwargs):
code = params.get("Code", {})
zip_file = code.get("ZipFile")
if zip_file and not is_base64(zip_file) and not is_zip_file(
to_bytes(zip_file)):
tmp_dir = new_tmp_dir()
handler_file = get_handler_file_from_name(
params["Handler"], runtime=params["Runtime"])
tmp_file = os.path.join(tmp_dir, handler_file)
save_file(tmp_file, zip_file)
# add 'cfn-response' module to archive - see:
# https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/cfn-lambda-function-code-cfnresponsemodule.html
cfn_response_tmp_file = get_cfn_response_mod_file()
cfn_response_mod_dir = os.path.join(tmp_dir, "node_modules",
"cfn-response")
mkdir(cfn_response_mod_dir)
cp_r(
cfn_response_tmp_file,
os.path.join(cfn_response_mod_dir, "index.js"),
)
# create zip file
zip_file = create_zip_file(tmp_dir, get_content=True)
code["ZipFile"] = zip_file
rm_rf(tmp_dir)
if _include_arch and "Architectures" in params:
code["Architectures"] = params.get("Architectures")
return code
def get_machine_id():
global MACHINE_ID
if MACHINE_ID:
return MACHINE_ID
# determine MACHINE_ID from config files
configs_map = {}
config_file_tmp = get_config_file_tempdir()
config_file_home = get_config_file_homedir()
for config_file in (config_file_home, config_file_tmp):
if config_file:
local_configs = load_file(config_file)
local_configs = json.loads(to_str(local_configs))
configs_map[config_file] = local_configs
if 'machine_id' in local_configs:
MACHINE_ID = local_configs['machine_id']
break
# if we can neither find NOR create the config files, fall back to process id
if not configs_map:
return PROCESS_ID
# assign default id if empty
if not MACHINE_ID:
MACHINE_ID = short_uid()
# update MACHINE_ID in all config files
for config_file, configs in configs_map.items():
configs['machine_id'] = MACHINE_ID
save_file(config_file, json.dumps(configs))
return MACHINE_ID
def install_dynamodb_local():
if not os.path.exists(INSTALL_DIR_DDB):
LOGGER.info('Downloading and installing local DynamoDB server. This may take some time.')
mkdir(INSTALL_DIR_DDB)
# download and extract archive
download_and_extract_with_retry(DYNAMODB_JAR_URL, TMP_ARCHIVE_DDB, INSTALL_DIR_DDB)
# fix for Alpine, otherwise DynamoDBLocal fails with:
# DynamoDBLocal_lib/libsqlite4java-linux-amd64.so: __memcpy_chk: symbol not found
if is_alpine():
ddb_libs_dir = '%s/DynamoDBLocal_lib' % INSTALL_DIR_DDB
patched_marker = '%s/alpine_fix_applied' % ddb_libs_dir
if not os.path.exists(patched_marker):
patched_lib = ('https://rawgit.com/bhuisgen/docker-alpine/master/alpine-dynamodb/' +
'rootfs/usr/local/dynamodb/DynamoDBLocal_lib/libsqlite4java-linux-amd64.so')
patched_jar = ('https://rawgit.com/bhuisgen/docker-alpine/master/alpine-dynamodb/' +
'rootfs/usr/local/dynamodb/DynamoDBLocal_lib/sqlite4java.jar')
run("curl -L -o %s/libsqlite4java-linux-amd64.so '%s'" % (ddb_libs_dir, patched_lib))
run("curl -L -o %s/sqlite4java.jar '%s'" % (ddb_libs_dir, patched_jar))
save_file(patched_marker, '')
# fix logging configuration for DynamoDBLocal
log4j2_config = """<Configuration status="WARN">
<Appenders>
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
</Console>
</Appenders>
<Loggers>
<Root level="WARN"><AppenderRef ref="Console"/></Root>
</Loggers>
</Configuration>"""
log4j2_file = os.path.join(INSTALL_DIR_DDB, 'log4j2.xml')
save_file(log4j2_file, log4j2_config)
run('cd "%s" && zip -u DynamoDBLocal.jar log4j2.xml || true' % INSTALL_DIR_DDB)
def create_lambda_archive(script, get_content=False, libs=[], runtime=None, file_name=None):
"""Utility method to create a Lambda function archive"""
tmp_dir = tempfile.mkdtemp(prefix=ARCHIVE_DIR_PREFIX)
TMP_FILES.append(tmp_dir)
file_name = file_name or get_handler_file_from_name(LAMBDA_DEFAULT_HANDLER, runtime=runtime)
script_file = os.path.join(tmp_dir, file_name)
if os.path.sep in script_file:
mkdir(os.path.dirname(script_file))
save_file(script_file, script)
# copy libs
for lib in libs:
paths = [lib, '%s.py' % lib]
target_dir = tmp_dir
root_folder = os.path.join(LOCALSTACK_VENV_FOLDER, 'lib/python*/site-packages')
if lib == 'localstack':
paths = ['localstack/*.py', 'localstack/utils']
root_folder = LOCALSTACK_ROOT_FOLDER
target_dir = os.path.join(tmp_dir, lib)
mkdir(target_dir)
for path in paths:
file_to_copy = os.path.join(root_folder, path)
for file_path in glob.glob(file_to_copy):
name = os.path.join(target_dir, file_path.split(os.path.sep)[-1])
if os.path.isdir(file_path):
shutil.copytree(file_path, name)
else:
shutil.copyfile(file_path, name)
# create zip file
return create_zip_file(tmp_dir, get_content=get_content)
def _do_start_ssl_proxy_with_client_auth(port: int, target: str,
client_cert_key: Tuple[str, str]):
base_url = f"{'https://' if '://' not in target else ''}{target.rstrip('/')}"
# prepare cert files (TODO: check whether/how we can pass cert strings to requests.request(..) directly)
cert_file = client_cert_key[0]
if not os.path.exists(cert_file):
cert_file = new_tmp_file()
save_file(cert_file, client_cert_key[0])
key_file = client_cert_key[1]
if not os.path.exists(key_file):
key_file = new_tmp_file()
save_file(key_file, client_cert_key[1])
cert_params = (cert_file, key_file)
# define forwarding listener
class Listener(ProxyListener):
def forward_request(self, method, path, data, headers):
url = f"{base_url}{path}"
result = requests.request(method=method,
url=url,
data=data,
headers=headers,
cert=cert_params,
verify=False)
return result
proxy_thread = start_proxy_server(port,
update_listener=Listener(),
use_ssl=True)
return proxy_thread
def generate_processor_script(events_file, log_file=None):
script_file = os.path.join(tempfile.gettempdir(),
'kclipy.%s.processor.py' % short_uid())
if log_file:
log_file = "'%s'" % log_file
else:
log_file = 'None'
content = """#!/usr/bin/env python
import os, sys, glob, json, socket, time, logging, subprocess, tempfile
logging.basicConfig(level=logging.INFO)
for path in glob.glob('%s/lib/python*/site-packages'):
sys.path.insert(0, path)
sys.path.insert(0, '%s')
from localstack.config import DEFAULT_ENCODING
from localstack.utils.kinesis import kinesis_connector
from localstack.utils.common import timestamp
events_file = '%s'
log_file = %s
error_log = os.path.join(tempfile.gettempdir(), 'kclipy.error.log')
if __name__ == '__main__':
sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
num_tries = 3
sleep_time = 2
error = None
for i in range(0, num_tries):
try:
sock.connect(events_file)
error = None
break
except Exception as e:
error = e
if i < num_tries:
msg = '%%s: Unable to connect to UNIX socket. Retrying.' %% timestamp()
subprocess.check_output('echo "%%s" >> %%s' %% (msg, error_log), shell=True)
time.sleep(sleep_time)
if error:
print("WARN: Unable to connect to UNIX socket after retrying: %%s" %% error)
raise error
def receive_msg(records, checkpointer, shard_id):
try:
# records is a list of amazon_kclpy.messages.Record objects -> convert to JSON
records_dicts = [j._json_dict for j in records]
message_to_send = {'shard_id': shard_id, 'records': records_dicts}
string_to_send = '%%s\\n' %% json.dumps(message_to_send)
bytes_to_send = string_to_send.encode(DEFAULT_ENCODING)
sock.send(bytes_to_send)
except Exception as e:
msg = "WARN: Unable to forward event: %%s" %% e
print(msg)
subprocess.check_output('echo "%%s" >> %%s' %% (msg, error_log), shell=True)
kinesis_connector.KinesisProcessor.run_processor(log_file=log_file, processor_func=receive_msg)
""" % (LOCALSTACK_VENV_FOLDER, LOCALSTACK_ROOT_FOLDER, events_file,
log_file)
save_file(script_file, content)
chmod_r(script_file, 0o755)
TMP_FILES.append(script_file)
return script_file
def _execute(self, func_arn, func_details, event, context=None, version=None):
lambda_cwd = func_details.cwd
runtime = func_details.runtime
handler = func_details.handler
environment = func_details.envvars.copy()
# configure USE_SSL in environment
if config.USE_SSL:
environment['USE_SSL'] = '1'
# prepare event body
if not event:
LOG.warning('Empty event body specified for invocation of Lambda "%s"' % func_arn)
event = {}
event_body = json.dumps(json_safe(event))
stdin = self.prepare_event(environment, event_body)
docker_host = config.DOCKER_HOST_FROM_CONTAINER
environment['HOSTNAME'] = docker_host
environment['LOCALSTACK_HOSTNAME'] = docker_host
environment['_HANDLER'] = handler
if func_details.timeout:
environment['AWS_LAMBDA_FUNCTION_TIMEOUT'] = str(func_details.timeout)
if context:
environment['AWS_LAMBDA_FUNCTION_NAME'] = context.function_name
environment['AWS_LAMBDA_FUNCTION_VERSION'] = context.function_version
environment['AWS_LAMBDA_FUNCTION_INVOKED_ARN'] = context.invoked_function_arn
# custom command to execute in the container
command = ''
# if running a Java Lambda, set up classpath arguments
if is_java_lambda(runtime):
java_opts = Util.get_java_opts()
stdin = None
# copy executor jar into temp directory
target_file = os.path.join(lambda_cwd, os.path.basename(LAMBDA_EXECUTOR_JAR))
if not os.path.exists(target_file):
cp_r(LAMBDA_EXECUTOR_JAR, target_file)
# TODO cleanup once we have custom Java Docker image
taskdir = '/var/task'
save_file(os.path.join(lambda_cwd, LAMBDA_EVENT_FILE), event_body)
classpath = Util.get_java_classpath(target_file)
command = ("bash -c 'cd %s; java %s -cp \"%s\" \"%s\" \"%s\" \"%s\"'" %
(taskdir, java_opts, classpath, LAMBDA_EXECUTOR_CLASS, handler, LAMBDA_EVENT_FILE))
# accept any self-signed certificates for outgoing calls from the Lambda
if is_nodejs_runtime(runtime):
environment['NODE_TLS_REJECT_UNAUTHORIZED'] = '0'
# determine the command to be executed (implemented by subclasses)
cmd = self.prepare_execution(func_arn, environment, runtime, command, handler, lambda_cwd)
# lambci writes the Lambda result to stdout and logs to stderr, fetch it from there!
LOG.info('Running lambda cmd: %s' % cmd)
result = self.run_lambda_executor(cmd, stdin, env_vars=environment, func_details=func_details)
return result
def create_lambda_archive(
script: str,
get_content: bool = False,
libs: List[str] = None,
runtime: str = None,
file_name: str = None,
exclude_func: Callable[[str], bool] = None,
):
"""Utility method to create a Lambda function archive"""
if libs is None:
libs = []
runtime = runtime or LAMBDA_DEFAULT_RUNTIME
with tempfile.TemporaryDirectory(prefix=ARCHIVE_DIR_PREFIX) as tmp_dir:
file_name = file_name or get_handler_file_from_name(LAMBDA_DEFAULT_HANDLER, runtime=runtime)
script_file = os.path.join(tmp_dir, file_name)
if os.path.sep in script_file:
mkdir(os.path.dirname(script_file))
# create __init__.py files along the path to allow Python imports
path = file_name.split(os.path.sep)
for i in range(1, len(path)):
save_file(os.path.join(tmp_dir, *(path[:i] + ["__init__.py"])), "")
save_file(script_file, script)
chmod_r(script_file, 0o777)
# copy libs
for lib in libs:
paths = [lib, "%s.py" % lib]
try:
module = importlib.import_module(lib)
paths.append(module.__file__)
except Exception:
pass
target_dir = tmp_dir
root_folder = os.path.join(LOCALSTACK_VENV_FOLDER, "lib/python*/site-packages")
if lib == "localstack":
paths = ["localstack/*.py", "localstack/utils"]
root_folder = LOCALSTACK_ROOT_FOLDER
target_dir = os.path.join(tmp_dir, lib)
mkdir(target_dir)
for path in paths:
file_to_copy = path if path.startswith("/") else os.path.join(root_folder, path)
for file_path in glob.glob(file_to_copy):
name = os.path.join(target_dir, file_path.split(os.path.sep)[-1])
if os.path.isdir(file_path):
copy_dir(file_path, name)
else:
shutil.copyfile(file_path, name)
if exclude_func:
for dirpath, folders, files in os.walk(tmp_dir):
for name in list(folders) + list(files):
full_name = os.path.join(dirpath, name)
relative = os.path.relpath(full_name, start=tmp_dir)
if exclude_func(relative):
rm_rf(full_name)
# create zip file
result = create_zip_file(tmp_dir, get_content=get_content)
return result
def get_or_create_file(config_file):
if os.path.exists(config_file):
return config_file
try:
save_file(config_file, '{}')
return config_file
except Exception:
pass
def get_or_create_file(config_file):
if os.path.exists(config_file):
return config_file
try:
save_file(config_file, '{}')
return config_file
except Exception:
pass
def test_get_java_lib_folder_classpath_no_directories(self):
base_dir = new_tmp_dir()
jar_file = os.path.join(base_dir, 'foo.jar')
save_file(jar_file, '')
lib_file = os.path.join(base_dir, 'lib', 'lib.jar')
mkdir(os.path.dirname(lib_file))
save_file(lib_file, '')
self.assertEquals('.:foo.jar:lib/lib.jar', lambda_executors.Util.get_java_classpath(jar_file))
def generate_processor_script(events_file, log_file=None):
script_file = os.path.join(tempfile.gettempdir(), 'kclipy.%s.processor.py' % short_uid())
if log_file:
log_file = "'%s'" % log_file
else:
log_file = 'None'
content = """#!/usr/bin/env python
import os, sys, glob, json, socket, time, logging, tempfile
import subprocess32 as subprocess
logging.basicConfig(level=logging.INFO)
for path in glob.glob('%s/lib/python*/site-packages'):
sys.path.insert(0, path)
sys.path.insert(0, '%s')
from localstack.config import DEFAULT_ENCODING
from localstack.utils.kinesis import kinesis_connector
from localstack.utils.common import timestamp
events_file = '%s'
log_file = %s
error_log = os.path.join(tempfile.gettempdir(), 'kclipy.error.log')
if __name__ == '__main__':
sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
num_tries = 3
sleep_time = 2
error = None
for i in range(0, num_tries):
try:
sock.connect(events_file)
error = None
break
except Exception as e:
error = e
if i < num_tries:
msg = '%%s: Unable to connect to UNIX socket. Retrying.' %% timestamp()
subprocess.check_output('echo "%%s" >> %%s' %% (msg, error_log), shell=True)
time.sleep(sleep_time)
if error:
print("WARN: Unable to connect to UNIX socket after retrying: %%s" %% error)
raise error
def receive_msg(records, checkpointer, shard_id):
try:
# records is a list of amazon_kclpy.messages.Record objects -> convert to JSON
records_dicts = [j._json_dict for j in records]
message_to_send = {'shard_id': shard_id, 'records': records_dicts}
string_to_send = '%%s\\n' %% json.dumps(message_to_send)
bytes_to_send = string_to_send.encode(DEFAULT_ENCODING)
sock.send(bytes_to_send)
except Exception as e:
msg = "WARN: Unable to forward event: %%s" %% e
print(msg)
subprocess.check_output('echo "%%s" >> %%s' %% (msg, error_log), shell=True)
kinesis_connector.KinesisProcessor.run_processor(log_file=log_file, processor_func=receive_msg)
""" % (LOCALSTACK_VENV_FOLDER, LOCALSTACK_ROOT_FOLDER, events_file, log_file)
save_file(script_file, content)
chmod_r(script_file, 0o755)
TMP_FILES.append(script_file)
return script_file
def test_save_load_file(tmp_path):
file_name = tmp_path / ("normal_permissions_%s" % short_uid())
content = "some_content_%s" % short_uid()
more_content = "some_more_content_%s" % short_uid()
save_file(file_name, content)
assert content == load_file(file_name)
save_file(file_name, more_content, append=True)
assert content + more_content == load_file(file_name)
def execute(event, context):
event_file = EVENT_FILE_PATTERN.replace('*', short_uid())
save_file(event_file, json.dumps(event))
TMP_FILES.append(event_file)
class_name = arn_to_lambda[arn].handler.split('::')[0]
classpath = '%s:%s' % (LAMBDA_EXECUTOR_JAR, main_file)
cmd = 'java -cp %s %s %s %s' % (classpath, LAMBDA_EXECUTOR_CLASS, class_name, event_file)
result, log_output = run_lambda_executor(cmd)
LOG.info('Lambda output: %s' % log_output.replace('\n', '\n> '))
return result
def _execute(self, func_arn, func_details, event, context=None, version=None):
lambda_cwd = func_details.cwd
runtime = func_details.runtime
handler = func_details.handler
environment = func_details.envvars.copy()
# configure USE_SSL in environment
if config.USE_SSL:
environment['USE_SSL'] = '1'
# prepare event body
if not event:
LOG.warning('Empty event body specified for invocation of Lambda "%s"' % func_arn)
event = {}
event_body = json.dumps(json_safe(event))
stdin = self.prepare_event(environment, event_body)
docker_host = config.DOCKER_HOST_FROM_CONTAINER
environment['HOSTNAME'] = docker_host
environment['LOCALSTACK_HOSTNAME'] = docker_host
if context:
environment['AWS_LAMBDA_FUNCTION_NAME'] = context.function_name
environment['AWS_LAMBDA_FUNCTION_VERSION'] = context.function_version
environment['AWS_LAMBDA_FUNCTION_INVOKED_ARN'] = context.invoked_function_arn
# custom command to execute in the container
command = ''
# if running a Java Lambda, set up classpath arguments
if runtime == LAMBDA_RUNTIME_JAVA8:
java_opts = Util.get_java_opts()
stdin = None
# copy executor jar into temp directory
target_file = os.path.join(lambda_cwd, os.path.basename(LAMBDA_EXECUTOR_JAR))
if not os.path.exists(target_file):
cp_r(LAMBDA_EXECUTOR_JAR, target_file)
# TODO cleanup once we have custom Java Docker image
taskdir = '/var/task'
save_file(os.path.join(lambda_cwd, LAMBDA_EVENT_FILE), event_body)
classpath = Util.get_java_classpath(target_file)
command = ("bash -c 'cd %s; java %s -cp \"%s\" \"%s\" \"%s\" \"%s\"'" %
(taskdir, java_opts, classpath, LAMBDA_EXECUTOR_CLASS, handler, LAMBDA_EVENT_FILE))
# determine the command to be executed (implemented by subclasses)
cmd = self.prepare_execution(func_arn, environment, runtime, command, handler, lambda_cwd)
# lambci writes the Lambda result to stdout and logs to stderr, fetch it from there!
LOG.debug('Running lambda cmd: %s' % cmd)
result, log_output = self.run_lambda_executor(cmd, stdin, environment)
log_formatted = log_output.strip().replace('\n', '\n> ')
LOG.debug('Lambda %s result / log output:\n%s\n>%s' % (func_arn, result.strip(), log_formatted))
return result, log_output
def execute_java_lambda(self, event, context, handler, main_file):
event_file = EVENT_FILE_PATTERN.replace('*', short_uid())
save_file(event_file, json.dumps(event))
TMP_FILES.append(event_file)
class_name = handler.split('::')[0]
classpath = '%s:%s:%s' % (LAMBDA_EXECUTOR_JAR, main_file, Util.get_java_classpath(main_file))
cmd = 'java -cp %s %s %s %s' % (classpath, LAMBDA_EXECUTOR_CLASS, class_name, event_file)
result, log_output = self.run_lambda_executor(cmd)
LOG.debug('Lambda result / log output:\n%s\n> %s' % (
result.strip(), log_output.strip().replace('\n', '\n> ')))
return result, log_output
def _dump_events_to_files(events_with_added_uuid):
try:
_create_and_register_temp_dir()
current_time_millis = int(round(time.time() * 1000))
for event in events_with_added_uuid:
target = os.path.join(
_get_events_tmp_dir(), "%s_%s" % (current_time_millis, event["uuid"])
)
save_file(target, json.dumps(event["event"]))
except Exception as e:
LOG.info("Unable to dump events to tmp dir %s: %s", _get_events_tmp_dir(), e)
def test_get_java_lib_folder_classpath_no_directories(self):
base_dir = new_tmp_dir()
jar_file = os.path.join(base_dir, "foo.jar")
save_file(jar_file, "")
lib_file = os.path.join(base_dir, "lib", "lib.jar")
mkdir(os.path.dirname(lib_file))
save_file(lib_file, "")
classpath = lambda_executors.Util.get_java_classpath(jar_file)
self.assertIn(":foo.jar", classpath)
self.assertIn("lib/lib.jar:", classpath)
self.assertIn(":*.jar", classpath)
def execute_java_lambda(self, event, context, main_file, func_details=None):
handler = func_details.handler
opts = config.LAMBDA_JAVA_OPTS if config.LAMBDA_JAVA_OPTS else ''
event_file = EVENT_FILE_PATTERN.replace('*', short_uid())
save_file(event_file, json.dumps(json_safe(event)))
TMP_FILES.append(event_file)
class_name = handler.split('::')[0]
classpath = '%s:%s:%s' % (main_file, Util.get_java_classpath(main_file), LAMBDA_EXECUTOR_JAR)
cmd = 'java %s -cp %s %s %s %s' % (opts, classpath, LAMBDA_EXECUTOR_CLASS, class_name, event_file)
LOG.warning(cmd)
result = self.run_lambda_executor(cmd, func_details=func_details)
return result
def test_save_load_file_with_permissions(tmp_path):
file_name = tmp_path / ("special_permissions_%s" % short_uid())
content = "some_content_%s" % short_uid()
more_content = "some_more_content_%s" % short_uid()
permissions = 0o600
save_file(file_name, content, permissions=permissions)
assert permissions == os.stat(file_name).st_mode & 0o777
assert content == load_file(file_name)
save_file(file_name, more_content, append=True)
assert permissions == os.stat(file_name).st_mode & 0o777
assert content + more_content == load_file(file_name)
def get_lambda_code_param(params, **kwargs):
code = params.get('Code', {})
zip_file = code.get('ZipFile')
if zip_file and not common.is_base64(zip_file):
tmp_dir = common.new_tmp_dir()
handler_file = get_handler_file_from_name(params['Handler'], runtime=params['Runtime'])
tmp_file = os.path.join(tmp_dir, handler_file)
common.save_file(tmp_file, zip_file)
zip_file = create_zip_file(tmp_file, get_content=True)
code['ZipFile'] = zip_file
common.rm_rf(tmp_dir)
return code
def get_local_config_file():
file_name = '.localstack'
home_dir = expanduser("~")
for folder in (home_dir, TMP_FOLDER):
config_file = os.path.join(folder, file_name)
if os.path.exists(config_file):
return config_file
try:
save_file(config_file, '{}')
return config_file
except Exception as e:
pass
def create_zip_file(file_path,
zip_file=None,
get_content=False,
content_root=None,
mode="w"):
"""
Creates a zipfile to the designated file_path.
By default, a new zip file is created but the mode parameter can be used to append to an existing zip file
"""
base_dir = file_path
if not os.path.isdir(file_path):
base_dir = tempfile.mkdtemp(prefix=ARCHIVE_DIR_PREFIX)
shutil.copy(file_path, base_dir)
TMP_FILES.append(base_dir)
tmp_dir = tempfile.mkdtemp(prefix=ARCHIVE_DIR_PREFIX)
full_zip_file = zip_file
if not full_zip_file:
zip_file_name = "archive.zip"
full_zip_file = os.path.join(tmp_dir, zip_file_name)
# special case where target folder is empty -> create empty zip file
if is_empty_dir(base_dir):
# see https://stackoverflow.com/questions/25195495/how-to-create-an-empty-zip-file#25195628
content = (
b"PK\x05\x06\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
)
if get_content:
return content
save_file(full_zip_file, content)
return full_zip_file
# create zip file
if is_alpine():
# todo: extend CLI with the new parameters
create_zip_file_cli(source_path=file_path,
base_dir=base_dir,
zip_file=full_zip_file)
else:
create_zip_file_python(
source_path=file_path,
base_dir=base_dir,
zip_file=full_zip_file,
content_root=content_root,
mode=mode,
)
if not get_content:
TMP_FILES.append(tmp_dir)
return full_zip_file
with open(full_zip_file, "rb") as file_obj:
zip_file_content = file_obj.read()
rm_dir(tmp_dir)
return zip_file_content
def download_and_extract():
if not os.path.exists(tmp_archive):
# create temporary placeholder file, to avoid duplicate parallel downloads
save_file(tmp_archive, '')
download(archive_url, tmp_archive)
_, ext = os.path.splitext(tmp_archive)
if ext == '.zip':
unzip(tmp_archive, target_dir)
elif ext == '.gz' or ext == '.bz2':
untar(tmp_archive, target_dir)
else:
raise Exception('Unsupported archive format: %s' % ext)
def install_elasticsearch():
if not os.path.exists(INSTALL_DIR_ES):
log_install_msg('Elasticsearch')
mkdir(INSTALL_DIR_INFRA)
# download and extract archive
tmp_archive = os.path.join(tempfile.gettempdir(), 'localstack.es.zip')
download_and_extract_with_retry(ELASTICSEARCH_JAR_URL, tmp_archive,
INSTALL_DIR_INFRA)
elasticsearch_dir = glob.glob(
os.path.join(INSTALL_DIR_INFRA, 'elasticsearch*'))
if not elasticsearch_dir:
raise Exception('Unable to find Elasticsearch folder in %s' %
INSTALL_DIR_INFRA)
shutil.move(elasticsearch_dir[0], INSTALL_DIR_ES)
for dir_name in ('data', 'logs', 'modules', 'plugins',
'config/scripts'):
dir_path = '%s/%s' % (INSTALL_DIR_ES, dir_name)
mkdir(dir_path)
chmod_r(dir_path, 0o777)
# install default plugins
for plugin in ELASTICSEARCH_PLUGIN_LIST:
if is_alpine():
# https://github.com/pires/docker-elasticsearch/issues/56
os.environ['ES_TMPDIR'] = '/tmp'
plugin_binary = os.path.join(INSTALL_DIR_ES, 'bin',
'elasticsearch-plugin')
print('install elasticsearch-plugin %s' % (plugin))
run('%s install -b %s' % (plugin_binary, plugin))
# delete some plugins to free up space
for plugin in ELASTICSEARCH_DELETE_MODULES:
module_dir = os.path.join(INSTALL_DIR_ES, 'modules', plugin)
rm_rf(module_dir)
# disable x-pack-ml plugin (not working on Alpine)
xpack_dir = os.path.join(INSTALL_DIR_ES, 'modules', 'x-pack-ml',
'platform')
rm_rf(xpack_dir)
# patch JVM options file - replace hardcoded heap size settings
jvm_options_file = os.path.join(INSTALL_DIR_ES, 'config', 'jvm.options')
if os.path.exists(jvm_options_file):
jvm_options = load_file(jvm_options_file)
jvm_options_replaced = re.sub(r'(^-Xm[sx][a-zA-Z0-9\.]+$)',
r'# \1',
jvm_options,
flags=re.MULTILINE)
if jvm_options != jvm_options_replaced:
save_file(jvm_options_file, jvm_options_replaced)
def execute_java_lambda(self, event, context, handler, main_file):
event_file = EVENT_FILE_PATTERN.replace('*', short_uid())
save_file(event_file, json.dumps(event))
TMP_FILES.append(event_file)
class_name = handler.split('::')[0]
classpath = '%s:%s' % (LAMBDA_EXECUTOR_JAR, main_file)
cmd = 'java -cp %s %s %s %s' % (classpath, LAMBDA_EXECUTOR_CLASS, class_name, event_file)
async = False
# flip async flag depending on origin
if 'Records' in event:
# TODO: add more event supporting async lambda execution
if 'Sns' in event['Records'][0]:
async = True
if 'dynamodb' in event['Records'][0]:
async = True
result, log_output = self.run_lambda_executor(cmd, async=async)
def create_config_file(config_file, executableName, streamName, applicationName, credentialsProvider=None, **kwargs):
if not credentialsProvider:
credentialsProvider = 'DefaultAWSCredentialsProviderChain'
content = """
executableName = %s
streamName = %s
applicationName = %s
AWSCredentialsProvider = %s
processingLanguage = python/2.7
regionName = us-east-1
""" % (executableName, streamName, applicationName, credentialsProvider)
# optional properties
for key, value in kwargs.iteritems():
content += """
%s = %s""" % (key, value)
content = content.replace(' ', '')
save_file(config_file, content)
def create_lambda_archive(script, stream=None, get_content=False, libs=[], runtime=None):
"""Utility method to create a Lambda function archive"""
tmp_dir = tempfile.mkdtemp(prefix=ARCHIVE_DIR_PREFIX)
TMP_FILES.append(tmp_dir)
file_name = get_handler_file_from_name(LAMBDA_DEFAULT_HANDLER, runtime=runtime)
script_file = '%s/%s' % (tmp_dir, file_name)
save_file(script_file, script)
# copy libs
for lib in libs:
paths = [lib, '%s.py' % lib]
target_dir = tmp_dir
root_folder = '%s/lib/python*/site-packages' % LOCALSTACK_VENV_FOLDER
if lib == 'localstack':
paths = ['localstack/*.py', 'localstack/utils']
root_folder = LOCALSTACK_ROOT_FOLDER
target_dir = '%s/%s/' % (tmp_dir, lib)
mkdir(target_dir)
for path in paths:
file_to_copy = '%s/%s' % (root_folder, path)
for file_path in glob.glob(file_to_copy):
run('cp -r %s %s/' % (file_path, target_dir))
# create zip file
return create_zip_file(tmp_dir, get_content=True)
def log(self, s):
s = '%s\n' % s
if self.log_file:
save_file(self.log_file, s, append=True)
def set_function_code(code, lambda_name):
def generic_handler(event, context):
raise Exception(('Unable to find executor for Lambda function "%s". ' +
'Note that Node.js and .NET Core Lambdas currently require LAMBDA_EXECUTOR=docker') % lambda_name)
lambda_handler = generic_handler
lambda_cwd = None
arn = func_arn(lambda_name)
runtime = arn_to_lambda[arn].runtime
handler_name = arn_to_lambda.get(arn).handler
lambda_environment = arn_to_lambda.get(arn).envvars
if not handler_name:
handler_name = LAMBDA_DEFAULT_HANDLER
handler_file = get_handler_file_from_name(handler_name, runtime=runtime)
handler_function = get_handler_function_from_name(handler_name, runtime=runtime)
# Stop/remove any containers that this arn uses.
LAMBDA_EXECUTOR.cleanup(arn)
if 'S3Bucket' in code:
s3_client = aws_stack.connect_to_service('s3')
bytes_io = BytesIO()
try:
s3_client.download_fileobj(code['S3Bucket'], code['S3Key'], bytes_io)
zip_file_content = bytes_io.getvalue()
except Exception as e:
return error_response('Unable to fetch Lambda archive from S3: %s' % e, 404)
elif 'ZipFile' in code:
zip_file_content = code['ZipFile']
zip_file_content = base64.b64decode(zip_file_content)
else:
return error_response('No valid Lambda archive specified.', 400)
# save tmp file
tmp_dir = '%s/zipfile.%s' % (config.TMP_FOLDER, short_uid())
mkdir(tmp_dir)
tmp_file = '%s/%s' % (tmp_dir, LAMBDA_ZIP_FILE_NAME)
save_file(tmp_file, zip_file_content)
TMP_FILES.append(tmp_dir)
lambda_cwd = tmp_dir
# check if this is a ZIP file
is_zip = is_zip_file(zip_file_content)
if is_zip:
unzip(tmp_file, tmp_dir)
main_file = '%s/%s' % (tmp_dir, handler_file)
if not os.path.isfile(main_file):
# check if this is a zip file that contains a single JAR file
jar_files = glob.glob('%s/*.jar' % tmp_dir)
if len(jar_files) == 1:
main_file = jar_files[0]
if os.path.isfile(main_file):
# make sure the file is actually readable, then read contents
ensure_readable(main_file)
with open(main_file, 'rb') as file_obj:
zip_file_content = file_obj.read()
else:
file_list = run('ls -la %s' % tmp_dir)
LOG.debug('Lambda archive content:\n%s' % file_list)
return error_response('Unable to find handler script in Lambda archive.', 400, error_type='ValidationError')
# it could be a JAR file (regardless of whether wrapped in a ZIP file or not)
is_jar = is_jar_archive(zip_file_content)
if is_jar:
def execute(event, context):
result, log_output = lambda_executors.EXECUTOR_LOCAL.execute_java_lambda(event, context,
handler=arn_to_lambda[arn].handler, main_file=main_file)
return result
lambda_handler = execute
elif runtime.startswith('python') and not use_docker():
try:
lambda_handler = exec_lambda_code(zip_file_content,
handler_function=handler_function, lambda_cwd=lambda_cwd,
lambda_env=lambda_environment)
except Exception as e:
raise Exception('Unable to get handler function from lambda code.', e)
if not is_zip and not is_jar:
raise Exception('Uploaded Lambda code is neither a ZIP nor JAR file.')
add_function_mapping(lambda_name, lambda_handler, lambda_cwd)
return {'FunctionName': lambda_name}
LOGGER = logging.getLogger(__name__)
def start_sqs(port=PORT_SQS, async=False, update_listener=None):
install_elasticmq()
backend_port = DEFAULT_PORT_SQS_BACKEND
# create config file
config = """
include classpath("application.conf")
node-address {
protocol = http
host = "%s"
port = %s
context-path = ""
}
rest-sqs {
enabled = true
bind-port = %s
bind-hostname = "0.0.0.0"
sqs-limits = strict
}
""" % (LOCALSTACK_HOSTNAME, port, backend_port)
config_file = os.path.join(TMP_FOLDER, 'sqs.%s.conf' % short_uid())
TMP_FILES.append(config_file)
save_file(config_file, config)
# start process
cmd = ('java -Dconfig.file=%s -jar %s/elasticmq-server.jar' % (config_file, INSTALL_DIR_ELASTICMQ))
print('Starting mock SQS (%s port %s)...' % (get_service_protocol(), port))
start_proxy_for_service('sqs', port, backend_port, update_listener)
return do_run(cmd, async)
