def cache_path():
cache_path = configuration.get_config_value("cache", "cache_path")
if not cache_path:
LOGGER.warn("No cache path configured. Using default value.")
cache_path = os.path.join(
configuration.get_config_value("server", "outputpath"), "cache")
return cache_path
def _execute_process(self, async_, wps_request, wps_response):
"""Uses :module:`pywps.processing` module for sending process to
background BUT first, check for maxprocesses configuration value
:param async_: run in asynchronous mode
:return: wps_response or None
"""
maxparallel = int(config.get_config_value('server', 'parallelprocesses'))
running, stored = dblog.get_process_counts()
# async
if async_:
# run immedietly
LOGGER.debug("Running processes: {} of {} allowed parallelprocesses".format(running, maxparallel))
LOGGER.debug("Stored processes: {}".format(stored))
maxprocesses = int(config.get_config_value('server', 'maxprocesses'))
if stored >= maxprocesses:
raise ServerBusy('Maximum number of processes in queue reached. Please try later.')
LOGGER.debug("Store process in job queue, uuid={}".format(self.uuid))
dblog.store_request(self.uuid, wps_request, self)
wps_response._update_status(WPS_STATUS.ACCEPTED, 'PyWPS Process stored in job queue', 0)
# not async
else:
if running >= maxparallel and maxparallel != -1:
raise ServerBusy('Maximum number of parallel running processes reached. Please try later.')
wps_response._update_status(WPS_STATUS.ACCEPTED, "PyWPS Request accepted", 0)
wps_response = self.run_process(wps_request, wps_response)
return wps_response
def start(args, kill = None):
config_file = os.path.join(os.path.dirname(os.path.abspath(__file__)), "pywps.cfg")
processes = [
FeatureCount(),
SayHello(),
Centroids(),
UltimateQuestion(),
Sleep(),
Buffer(),
Area(),
Box(),
Warp()
]
s = Server(processes=processes, config_file=config_file)
# TODO: need to spawn a different process for different server
if args.waitress:
import waitress
from pywps import configuration
configuration.load_configuration(config_file)
host = configuration.get_config_value('wps', 'serveraddress').split('://')[1]
port = int(configuration.get_config_value('wps', 'serverport'))
waitress.serve(s.app, host=host, port=port)
else:
s.run()
def _execute_xml_reference(self):
""" Decide what storage model to use and return Reference node
"""
doc = WPS.Reference()
# get_url will create the file and return the url for it
store_type = config.get_config_value('server', 'store_type')
self.storage = None
# chooses FileStorage, S3Storage or PgStorage based on a store_type value in cfg file
if store_type == 'db' and \
config.get_config_value('db', 'dbname'):
# TODO: more databases in config file
self.storage = PgStorage()
elif store_type == 's3' and \
config.get_config_value('s3', 'bucket_name'):
self.storage = S3Storage()
else:
self.storage = FileStorage()
doc.attrib['{http://www.w3.org/1999/xlink}href'] = self.get_url()
if self.data_format:
if self.data_format.mime_type:
doc.attrib['mimeType'] = self.data_format.mime_type
if self.data_format.encoding:
doc.attrib['encoding'] = self.data_format.encoding
if self.data_format.schema:
doc.attrib['schema'] = self.data_format.schema
return doc
def generate_recipe(diag, constraints=None, options=None, start_year=2000, end_year=2005, output_format='pdf', workdir=None):
constraints = constraints or {}
workdir = workdir or os.curdir
workdir = os.path.abspath(workdir)
output_dir = os.path.join(workdir, 'output')
# write config.yml
config_templ = template_env.get_template('config.yml')
rendered_config = config_templ.render(
archive_root=configuration.get_config_value("data", "archive_root"),
obs_root=configuration.get_config_value("data", "obs_root"),
output_dir=output_dir,
output_format=output_format,
)
config_file = os.path.abspath(os.path.join(workdir, "config.yml"))
with open(config_file, 'w') as fp:
fp.write(rendered_config)
# write recipe.xml
recipe = 'recipe_{0}.yml.j2'.format(diag)
recipe_templ = template_env.get_template(recipe)
rendered_recipe = recipe_templ.render(
diag=diag,
workdir=workdir,
constraints=constraints,
start_year=start_year,
end_year=end_year,
options=options,
)
recipe_file = os.path.abspath(os.path.join(workdir, "recipe.yml"))
with open(recipe_file, 'w') as fp:
fp.write(rendered_recipe)
return recipe_file, config_file
def main():
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('-w', '--waitress', action='store_true')
args = parser.parse_args()
config_file = os.path.join(os.path.dirname(os.path.abspath(__file__)), "pywps.cfg")
processes = [
FeatureCount(),
SayHello(),
Centroids(),
UltimateQuestion(),
Sleep(),
Buffer(),
Area(),
Viewshed()
]
s = Server(processes=processes, config_file=config_file)
# TODO: need to spawn a different process for different server
if args.waitress:
import waitress
from pywps import configuration
configuration.load_configuration(config_file)
host = configuration.get_config_value('wps', 'serveraddress').split('://')[1]
port = int(configuration.get_config_value('wps', 'serverport'))
waitress.serve(s.app, host=host, port=port)
else:
s.run()
def _run_process(self, wps_request, wps_response):
try:
self._set_grass(wps_request)
# if required set HOME to the current working directory.
if config.get_config_value('server', 'sethomedir') is True:
os.environ['HOME'] = self.workdir
LOGGER.info(
'Setting HOME to current working directory: {}'.format(
os.environ['HOME']))
LOGGER.debug('ProcessID={}, HOME={}'.format(
self.uuid, os.environ.get('HOME')))
wps_response._update_status(WPS_STATUS.STARTED,
u'PyWPS Process started', 0)
self.handler(
wps_request,
wps_response) # the user must update the wps_response.
# Ensure process termination
if wps_response.status != WPS_STATUS.SUCCEEDED and wps_response.status != WPS_STATUS.FAILED:
# if (not wps_response.status_percentage) or (wps_response.status_percentage != 100):
LOGGER.debug(
'Updating process status to 100% if everything went correctly'
)
wps_response._update_status(
WPS_STATUS.SUCCEEDED,
'PyWPS Process {} finished'.format(self.title), 100)
except Exception as e:
traceback.print_exc()
LOGGER.debug(
'Retrieving file and line number where exception occurred')
exc_type, exc_obj, exc_tb = sys.exc_info()
found = False
while not found:
# search for the _handler method
m_name = exc_tb.tb_frame.f_code.co_name
if m_name == '_handler':
found = True
else:
if exc_tb.tb_next is not None:
exc_tb = exc_tb.tb_next
else:
# if not found then take the first
exc_tb = sys.exc_info()[2]
break
fname = os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]
method_name = exc_tb.tb_frame.f_code.co_name
# update the process status to display process failed
msg = 'Process error: {}.{} Line {} {}'.format(
fname, method_name, exc_tb.tb_lineno, e)
LOGGER.error(msg)
if config.get_config_value("logging", "level") != "DEBUG":
msg = 'Process failed, please check server error log'
wps_response._update_status(WPS_STATUS.FAILED, msg, 100)
finally:
# The run of the next pending request if finished here, weather or not it successfull
self.launch_next_process()
return wps_response
def __init__(self):
"""
"""
super().__init__()
self.output_url = config.get_config_value('server', 'outputurl')
self.temp_url_key = get_temp_url_key()
self.container = config.get_config_value('SwiftStorage', 'container')
def cache(self):
"""Return the path to the server cache directory."""
out = configuration.get_config_value("cache", "cache_path")
if not out:
LOGGER.warn("No cache path configured. Using default value.")
out = join(configuration.get_config_value("server", "outputpath"), "cache")
return out
def get_session():
"""Get Connection for database
"""
LOGGER.debug('Initializing database connection')
global _SESSION_MAKER
global _LAST_SESSION
if _LAST_SESSION:
_LAST_SESSION.close()
if _SESSION_MAKER:
_SESSION_MAKER.close_all()
_LAST_SESSION = _SESSION_MAKER()
return _LAST_SESSION
database = configuration.get_config_value('logging', 'database')
echo = True
level = configuration.get_config_value('logging', 'level')
if level in ['INFO']:
echo = False
try:
engine = sqlalchemy.create_engine(database, echo=echo)
except sqlalchemy.exc.SQLAlchemyError as e:
raise NoApplicableCode("Could not connect to database: {}".format(
e.message))
Session = sessionmaker(bind=engine)
ProcessInstance.metadata.create_all(engine)
RequestInstance.metadata.create_all(engine)
_SESSION_MAKER = Session
_LAST_SESSION = _SESSION_MAKER()
return _LAST_SESSION
def __init__(self, host=None, port=None, debug=False, processes=[], config_file=None):
self.app = flask.Flask(__name__)
# Load config files and override settings if any file specified
if config_file:
configuration.load_configuration(config_file)
self.host = configuration.get_config_value('wps', 'serveraddress').split('://')[1]
self.port = int(configuration.get_config_value('wps', 'serverport'))
# Override config host and port if they are passed to the constructor
if host:
self.host = host
if port:
self.port = port
self.debug = debug
self.output_url = configuration.get_config_value('server', 'outputUrl')
self.output_path = configuration.get_config_value('server', 'outputPath')
self.temp_path = configuration.get_config_value('server', 'tempPath')
# check if in the configuration file specified directory exists otherwise create it
try:
if not os.path.exists(self.temp_path):
os.makedirs(self.temp_path)
print('%s does not exist. Creating it.' % self.temp_path)
if not os.path.exists(self.output_path):
os.makedirs(self.output_path)
print('%s does not exist. Creating it.' % self.output_path)
except Exception as e:
raise NoApplicableCode('File error: Could not create folder. %s' % e)
self.processes = processes
self.service = Service(processes=self.processes)
def get_session():
"""Get Connection for database
"""
LOGGER.debug('Initializing database connection')
global _SESSION_MAKER
global _LAST_SESSION
if _LAST_SESSION:
_LAST_SESSION.close()
if _SESSION_MAKER:
_SESSION_MAKER.close_all()
_LAST_SESSION = _SESSION_MAKER()
return _LAST_SESSION
database = configuration.get_config_value('logging', 'database')
echo = True
level = configuration.get_config_value('logging', 'level')
if level in ['INFO']:
echo = False
try:
engine = sqlalchemy.create_engine(database, echo=echo)
except sqlalchemy.exc.SQLAlchemyError as e:
raise NoApplicableCode("Could not connect to database: {}".format(e.message))
Session = sessionmaker(bind=engine)
ProcessInstance.metadata.create_all(engine)
RequestInstance.metadata.create_all(engine)
_SESSION_MAKER = Session
_LAST_SESSION = _SESSION_MAKER()
return _LAST_SESSION
def start(args, kill=None):
config_file = os.path.join(os.path.dirname(os.path.abspath(__file__)),
"pywps.cfg")
processes = [
FeatureCount(),
SayHello(),
Centroids(),
UltimateQuestion(),
Sleep(),
Buffer(),
Area(),
Box(),
Warp()
]
s = Server(processes=processes, config_file=config_file)
# TODO: need to spawn a different process for different server
if args.waitress:
import waitress
from pywps import configuration
configuration.load_configuration(config_file)
host = configuration.get_config_value('wps',
'serveraddress').split('://')[1]
port = int(configuration.get_config_value('wps', 'serverport'))
waitress.serve(s.app, host=host, port=port)
else:
s.run()
def get_connstr():
connstr = "PG:dbname={} user={} password={} host={}".format(
get_config_value("db", "dbname"),
get_config_value("db", "user"),
get_config_value("db", "password"),
get_config_value("db", "host")
)
return(connstr)
def __init__(self):
"""
"""
self.drive_secret_file = config.get_config_value(
'remote-storage', 'drive_secret_file')
self.target = config.get_config_value('server', 'outputpath')
self.output_url = '%s%s' % (config.get_config_value(
'server', 'url'), config.get_config_value('server', 'outputurl'))
def __init__(self):
"""
"""
self.target = config.get_config_value('server', 'outputPath')
self.output_url = '%s:%s%s' % (
config.get_config_value('wps', 'serveraddress'),
config.get_config_value('wps', 'serverport'),
config.get_config_value('server', 'outputUrl'))
def test_s3_html_chart_upload():
config.load_configuration(TEST_CFG)
bucket = config.get_config_value("s3", "bucket")
region = config.get_config_value("s3", "region")
location = {'LocationConstraint': region}
client = boto3.client("s3", region_name=region)
client.create_bucket(Bucket=bucket, CreateBucketConfiguration=location)
upload_chart_html_to_S3(TEST_CHART, "abcd")
def build(self):
bucket = wpsConfig.get_config_value('s3', 'bucket')
prefix = wpsConfig.get_config_value('s3', 'prefix')
public_access = wpsConfig.get_config_value('s3', 'public')
encrypt = wpsConfig.get_config_value('s3', 'encrypt')
region = wpsConfig.get_config_value('s3', 'region')
return S3Storage(bucket, prefix, public_access, encrypt, region)
def __init__(self):
"""
"""
self.dropbox_app_key = config.get_config_value('remote-storage',
'dropbox_access_token')
self.target = config.get_config_value('server', 'outputpath')
self.output_url = '%s%s' % (config.get_config_value(
'server', 'url'), config.get_config_value('server', 'outputurl'))
def __init__(self):
"""
"""
self.target = config.get_config_value('server', 'outputpath')
self.output_url = '%s%s' % (
config.get_config_value('server', 'url'),
config.get_config_value('server', 'outputurl')
)
def __init__(self):
"""
"""
self.dropbox_app_key = config.get_config_value('remote-storage', 'dropbox_access_token')
self.target = config.get_config_value('server', 'outputpath')
self.output_url = '%s%s' % (
config.get_config_value('server', 'url'),
config.get_config_value('server', 'outputurl')
)
def __init__(self):
"""
"""
self.drive_secret_file = config.get_config_value('remote-storage', 'drive_secret_file')
self.target = config.get_config_value('server', 'outputpath')
self.output_url = '%s%s' % (
config.get_config_value('server', 'url'),
config.get_config_value('server', 'outputurl')
)
def __init__(self):
"""
"""
self.target = config.get_config_value('server', 'outputPath')
self.output_url = '%s:%s%s' % (
config.get_config_value('wps', 'serveraddress'),
config.get_config_value('wps', 'serverport'),
config.get_config_value('server', 'outputUrl')
)
def _assign_port():
port_min = int(config.get_config_value("processing", "port_min"))
port_max = int(config.get_config_value("processing", "port_max"))
for port in range(port_min, port_max):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
res = sock.connect_ex(('127.0.0.1', port))
# TODO find better solution for errno
if res != 0:
return port
raise NoAvailablePort("No port from range {}-{} available.".format(
port_min, port_max))
def _run_process(self, wps_request, wps_response):
LOGGER.debug("Started processing request: {}".format(self.uuid))
try:
self._set_grass(wps_request)
# if required set HOME to the current working directory.
if config.get_config_value('server', 'sethomedir') is True:
os.environ['HOME'] = self.workdir
LOGGER.info('Setting HOME to current working directory: {}'.format(os.environ['HOME']))
LOGGER.debug('ProcessID={}, HOME={}'.format(self.uuid, os.environ.get('HOME')))
wps_response._update_status(WPS_STATUS.STARTED, u'PyWPS Process started', 0)
self.handler(wps_request, wps_response) # the user must update the wps_response.
# Ensure process termination
if wps_response.status != WPS_STATUS.SUCCEEDED and wps_response.status != WPS_STATUS.FAILED:
# if (not wps_response.status_percentage) or (wps_response.status_percentage != 100):
LOGGER.debug('Updating process status to 100% if everything went correctly')
wps_response._update_status(WPS_STATUS.SUCCEEDED, 'PyWPS Process {} finished'.format(self.title), 100)
except Exception as e:
traceback.print_exc()
LOGGER.debug('Retrieving file and line number where exception occurred')
exc_type, exc_obj, exc_tb = sys.exc_info()
found = False
while not found:
# search for the _handler method
m_name = exc_tb.tb_frame.f_code.co_name
if m_name == '_handler':
found = True
else:
if exc_tb.tb_next is not None:
exc_tb = exc_tb.tb_next
else:
# if not found then take the first
exc_tb = sys.exc_info()[2]
break
fname = os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]
method_name = exc_tb.tb_frame.f_code.co_name
# update the process status to display process failed
msg = 'Process error: method={}.{}, line={}, msg={}'.format(fname, method_name, exc_tb.tb_lineno, e)
LOGGER.error(msg)
# In case of a ProcessError use the validated exception message.
if isinstance(e, ProcessError):
msg = "Process error: {}".format(e)
# Only in debug mode we use the log message including the traceback ...
elif config.get_config_value("logging", "level") != "DEBUG":
# ... otherwise we use a sparse common error message.
msg = 'Process failed, please check server error log'
wps_response._update_status(WPS_STATUS.FAILED, msg, 100)
finally:
# The run of the next pending request if finished here, weather or not it successfull
self.launch_next_process()
return wps_response
def _set_uuid(self, uuid):
"""Set uuid and status ocation apth and url
"""
self.uuid = uuid
file_path = config.get_config_value('server', 'outputpath')
file_url = config.get_config_value('server', 'outputurl')
self.status_location = os.path.join(file_path, str(self.uuid)) + '.xml'
self.status_url = os.path.join(file_url, str(self.uuid)) + '.xml'
def _set_uuid(self, uuid):
"""Set uuid and status ocation apth and url
"""
self.uuid = uuid
file_path = config.get_config_value('server', 'outputpath')
file_url = config.get_config_value('server', 'outputurl')
self.status_location = os.path.join(file_path, str(self.uuid)) + '.xml'
self.status_url = os.path.join(file_url, str(self.uuid)) + '.xml'
def __init__(self):
# TODO: more databases in config file
# create connection string
dbsettings = "db"
self.dbname = config.get_config_value(dbsettings, "dbname")
self.target = "dbname={} user={} password={} host={}".format(
self.dbname,
config.get_config_value(dbsettings, "user"),
config.get_config_value(dbsettings, "password"),
config.get_config_value(dbsettings, "host")
)
self.schema_name = self._create_schema()
def __init__(self, cfgfiles=None):
global LOGGER
config.load_configuration(cfgfiles)
LOGGER = get_logger(file=config.get_config_value('logging', 'file'),
level=config.get_config_value('logging', 'level'),
format=config.get_config_value(
'logging', 'format'))
self.max_time = int(config.get_config_value('jobqueue', 'pause'))
self.maxparallel = int(
config.get_config_value('server', 'parallelprocesses'))
def __init__(self, processes=[], cfgfiles=None):
self.processes = {p.identifier: p for p in processes}
if cfgfiles:
config.load_configuration(cfgfiles)
if config.get_config_value('server', 'logfile') and config.get_config_value('server', 'loglevel'):
LOGGER.setLevel(getattr(logging, config.get_config_value('server', 'loglevel')))
msg_fmt = '%(asctime)s] [%(levelname)s] file=%(pathname)s line=%(lineno)s module=%(module)s function=%(funcName)s %(message)s'
fh = logging.FileHandler(config.get_config_value('server', 'logfile'))
fh.setFormatter(logging.Formatter(msg_fmt))
LOGGER.addHandler(fh)
else: # NullHandler
LOGGER.addHandler(logging.NullHandler())
def __init__(self, processes=[], cfgfile=None):
self.processes = {p.identifier: p for p in processes}
if cfgfile:
config.load_configuration(cfgfile)
if config.get_config_value('server', 'logfile') and config.get_config_value('server', 'loglevel'):
LOGGER.setLevel(getattr(logging, config.get_config_value('server', 'loglevel')))
msg_fmt = '%(asctime)s] [%(levelname)s] file=%(pathname)s line=%(lineno)s module=%(module)s function=%(funcName)s %(message)s'
fh = logging.FileHandler(config.get_config_value('server', 'logfile'))
fh.setFormatter(logging.Formatter(msg_fmt))
LOGGER.addHandler(fh)
else: # NullHandler
LOGGER.addHandler(logging.NullHandler())
def run_process(self, wps_request, wps_response):
LOGGER.debug("Started processing request: {}".format(self.uuid))
try:
self._set_grass(wps_request)
# if required set HOME to the current working directory.
if config.get_config_value('server', 'sethomedir') is True:
os.environ['HOME'] = self.workdir
LOGGER.info('Setting HOME to current working directory: {}'.format(os.environ['HOME']))
LOGGER.debug('ProcessID={}, HOME={}'.format(self.uuid, os.environ.get('HOME')))
wps_response._update_status(WPS_STATUS.STARTED, 'PyWPS Process started', 0)
self.handler(wps_request, wps_response) # the user must update the wps_response.
# Ensure process termination
if wps_response.status != WPS_STATUS.SUCCEEDED and wps_response.status != WPS_STATUS.FAILED:
# if (not wps_response.status_percentage) or (wps_response.status_percentage != 100):
LOGGER.debug('Updating process status to 100% if everything went correctly')
wps_response._update_status(WPS_STATUS.SUCCEEDED, 'PyWPS Process {} finished'.format(self.title), 100)
except Exception as e:
traceback.print_exc()
LOGGER.debug('Retrieving file and line number where exception occurred')
exc_type, exc_obj, exc_tb = sys.exc_info()
found = False
while not found:
# search for the _handler method
m_name = exc_tb.tb_frame.f_code.co_name
if m_name == '_handler':
found = True
else:
if exc_tb.tb_next is not None:
exc_tb = exc_tb.tb_next
else:
# if not found then take the first
exc_tb = sys.exc_info()[2]
break
fname = os.path.split(exc_tb.tb_frame.f_code.co_filename)[1]
method_name = exc_tb.tb_frame.f_code.co_name
# update the process status to display process failed
msg = 'Process error: method={}.{}, line={}, msg={}'.format(fname, method_name, exc_tb.tb_lineno, e)
LOGGER.error(msg)
# In case of a ProcessError use the validated exception message.
if isinstance(e, ProcessError):
msg = "Process error: {}".format(e)
# Only in debug mode we use the log message including the traceback ...
elif config.get_config_value("logging", "level") != "DEBUG":
# ... otherwise we use a sparse common error message.
msg = 'Process failed, please check server error log'
wps_response._update_status(WPS_STATUS.FAILED, msg, 100)
return wps_response
def _post_request(self):
"""HTTP GET request parser
"""
# check if input file size was not exceeded
maxsize = configuration.get_config_value('server', 'maxrequestsize')
maxsize = configuration.get_size_mb(maxsize) * 1024 * 1024
if self.http_request.content_length > maxsize:
raise FileSizeExceeded(
'File size for input exceeded.'
' Maximum request size allowed: {} megabytes'.format(
maxsize / 1024 / 1024))
try:
doc = lxml.etree.fromstring(self.http_request.get_data())
except Exception as e:
if PY2:
raise NoApplicableCode(e.message)
else:
raise NoApplicableCode(e.msg)
operation = doc.tag
version = get_version_from_ns(doc.nsmap[doc.prefix])
self.set_version(version)
request_parser = self._post_request_parser(operation)
request_parser(doc)
def test_get_opendap_datasets_bccaqv2(mock_tdscatalog):
names = [
"tasmin_day_BCCAQv2+ANUSPLIN300_CNRM-CM5_historical+rcp85_r1i1p1_19500101-21001231.nc",
"tasmin_day_BCCAQv2+ANUSPLIN300_CNRM-CM5_historical+rcp45_r1i1p1_19500101-21001231.nc",
"tasmin_day_BCCAQv2+ANUSPLIN300_CanESM2_historical+rcp45_r1i1p1_19500101-21001231.nc",
"tasmax_day_BCCAQv2+ANUSPLIN300_CanESM2_historical+rcp45_r1i1p1_19500101-21001231.nc",
"tasmax_day_BCCAQv2+ANUSPLIN300_NorESM1-M_historical+rcp26_r1i1p1_19500101-21001231.nc",
"tasmax_day_BCCAQv2+ANUSPLIN300_NorESM1-ME_historical+rcp85_r1i1p1_19500101-21001231.nc",
"tasmax_day_BCCAQv2+ANUSPLIN300_NorESM1-ME_historical+rcp45_r1i1p1_19500101-21001231.nc",
]
catalog_url = configuration.get_config_value("finch", "dataset_bccaqv2")
variable = "tasmin"
rcp = "rcp45"
mock_catalog = mock.MagicMock()
mock_tdscatalog.return_value = mock_catalog
def make_dataset(name):
dataset = mock.MagicMock()
dataset.access_urls = {"OPENDAP": "url"}
dataset.name = name
return dataset
mock_catalog.datasets = {name: make_dataset(name) for name in names}
urls = get_bccaqv2_opendap_datasets(catalog_url, [variable], rcp)
assert len(urls) == 2
def execute(self, identifier, wps_request, uuid):
"""Parse and perform Execute WPS request call
:param identifier: process identifier string
:param wps_request: pywps.WPSRequest structure with parsed inputs, still in memory
:param uuid: string identifier of the request
"""
self._set_grass()
response = None
try:
process = self.processes[identifier]
# make deep copy of the process instace
# so that processes are not overriding each other
# just for execute
process = copy.deepcopy(process)
workdir = os.path.abspath(config.get_config_value('server', 'workdir'))
tempdir = tempfile.mkdtemp(prefix='pywps_process_', dir=workdir)
process.set_workdir(tempdir)
except KeyError:
raise InvalidParameterValue("Unknown process '%r'" % identifier, 'Identifier')
olddir = os.path.abspath(os.curdir)
try:
os.chdir(process.workdir)
response = self._parse_and_execute(process, wps_request, uuid)
finally:
os.chdir(olddir)
return response
def _execute_xml_reference(self):
"""Return Reference node
"""
doc = WPS.Reference()
storage_option = config.get_config_value('remote-storage', 'storage_option')
if storage_option == 'ftp':
self.storage = FTPStorage()
elif storage_option == 'dropbox':
self.storage = DropboxStorage()
elif storage_option == 'googledrive':
self.storage = GoogleDriveStorage()
else:
self.storage = FileStorage()
# get_url will create the file and return the url for it
doc.attrib['{http://www.w3.org/1999/xlink}href'] = self.get_url()
if self.data_format:
if self.data_format.mime_type:
doc.attrib['mimeType'] = self.data_format.mime_type
if self.data_format.encoding:
doc.attrib['encoding'] = self.data_format.encoding
if self.data_format.schema:
doc.attrib['schema'] = self.data_format.schema
return doc
def esgfsearch_url():
"""Return the server configuration value for the ESGF search node URL."""
url = configuration.get_config_value("extra", "esgfsearch_url")
if not url:
LOGGER.warn("No ESGF Search URL configured. Using default value.")
url = 'https://esgf-data.dkrz.de/esg-search'
return url
def execute(self, identifier, wps_request, uuid):
"""Parse and perform Execute WPS request call
:param identifier: process identifier string
:param wps_request: pywps.WPSRequest structure with parsed inputs, still in memory
:param uuid: string identifier of the request
"""
self._set_grass()
response = None
try:
process = self.processes[identifier]
workdir = os.path.abspath(config.get_config_value("server", "workdir"))
tempdir = tempfile.mkdtemp(prefix="pywps_process_", dir=workdir)
process.set_workdir(tempdir)
except KeyError:
raise InvalidParameterValue("Unknown process '%r'" % identifier, "Identifier")
olddir = os.path.abspath(os.curdir)
try:
os.chdir(process.workdir)
response = self._parse_and_execute(process, wps_request, uuid)
finally:
os.chdir(olddir)
return response
def _set_grass(self):
"""Set environment variables needed for GRASS GIS support
"""
if not PY2:
LOGGER.debug("Python3 is not supported by GRASS")
return
gisbase = config.get_config_value("grass", "gisbase")
if gisbase and os.path.isdir(gisbase):
LOGGER.debug("GRASS GISBASE set to %s" % gisbase)
os.environ["GISBASE"] = gisbase
os.environ["LD_LIBRARY_PATH"] = "{}:{}".format(
os.environ.get("LD_LIBRARY_PATH"), os.path.join(gisbase, "lib")
)
os.putenv("LD_LIBRARY_PATH", os.environ.get("LD_LIBRARY_PATH"))
os.environ["PATH"] = "{}:{}:{}".format(
os.environ.get("PATH"), os.path.join(gisbase, "bin"), os.path.join(gisbase, "scripts")
)
os.putenv("PATH", os.environ.get("PATH"))
python_path = os.path.join(gisbase, "etc", "python")
os.environ["PYTHONPATH"] = "{}:{}".format(os.environ.get("PYTHONPATH"), python_path)
os.putenv("PYTHONPATH", os.environ.get("PYTHONPATH"))
sys.path.insert(0, python_path)
def href_handler(complexinput, datain):
"""<wps:Reference /> handler"""
tmp_dir = config.get_config_value('server', 'workdir')
# save the reference input in workdir
tmp_file = tempfile.mkstemp(dir=complexinput.workdir)[1]
try:
(reference_file, reference_file_data) = _openurl(href)
data_size = reference_file.headers.get('Content-Length', 0)
except Exception as e:
raise NoApplicableCode('File reference error: %s' % e)
# if the response did not return a 'Content-Length' header then calculate the size
if data_size == 0:
data_size = _get_datasize(reference_file_data)
# check if input file size was not exceeded
complexinput.calculate_max_input_size()
byte_size = complexinput.max_size * 1024 * 1024
if int(data_size) > int(byte_size):
raise FileSizeExceeded('File size for input exceeded.'
' Maximum allowed: %i megabytes' %\
complexinput.max_size, complexinput.get('identifier'))
try:
with open(tmp_file, 'w') as f:
f.write(reference_file_data)
f.close()
except Exception as e:
raise NoApplicableCode(e)
complexinput.file = tmp_file
complexinput.url = href
complexinput.as_reference = True
def execute(self, identifier, wps_request):
"""Parse and perform Execute WPS request call
:param identifier: process identifier string
:param wps_request: pywps.WPSRequest structure with parsed inputs, still in memory
"""
response = None
try:
process = self.processes[identifier]
workdir = config.get_config_value('server', 'workdir')
tempdir = tempfile.mkdtemp(prefix='pypws_process_', dir=workdir)
process.set_workdir(tempdir)
except KeyError:
raise InvalidParameterValue("Unknown process '%r'" % identifier)
olddir = os.path.abspath(os.curdir)
try:
os.chdir(process.workdir)
response = self._parse_and_execute(process, wps_request)
os.chdir(olddir)
shutil.rmtree(process.workdir)
except Exception as e:
os.chdir(olddir)
shutil.rmtree(process.workdir)
raise e
return response
def _set_grass(self):
"""Set environment variables needed for GRASS GIS support
"""
if not PY2:
LOGGER.debug('Python3 is not supported by GRASS')
return
gisbase = config.get_config_value('grass', 'gisbase')
if gisbase and os.path.isdir(gisbase):
LOGGER.debug('GRASS GISBASE set to %s' % gisbase)
os.environ['GISBASE'] = gisbase
os.environ['LD_LIBRARY_PATH'] = '{}:{}'.format(
os.environ.get('LD_LIBRARY_PATH'),
os.path.join(gisbase, 'lib'))
os.putenv('LD_LIBRARY_PATH', os.environ.get('LD_LIBRARY_PATH'))
os.environ['PATH'] = '{}:{}:{}'.format(
os.environ.get('PATH'),
os.path.join(gisbase, 'bin'),
os.path.join(gisbase, 'scripts'))
os.putenv('PATH', os.environ.get('PATH'))
python_path = os.path.join(gisbase, 'etc', 'python')
os.environ['PYTHONPATH'] = '{}:{}'.format(os.environ.get('PYTHONPATH'),
python_path)
os.putenv('PYTHONPATH', os.environ.get('PYTHONPATH'))
sys.path.insert(0, python_path)
def __init__(self, processes=[], cfgfiles=None):
# ordered dict of processes
self.processes = OrderedDict((p.identifier, p) for p in processes)
if cfgfiles:
config.load_configuration(cfgfiles)
if config.get_config_value('logging', 'file') and config.get_config_value('logging', 'level'):
LOGGER.setLevel(getattr(logging, config.get_config_value('logging', 'level')))
if not LOGGER.handlers: # hasHandlers in Python 3.x
fh = logging.FileHandler(config.get_config_value('logging', 'file'))
fh.setFormatter(logging.Formatter(config.get_config_value('logging', 'format')))
LOGGER.addHandler(fh)
else: # NullHandler | StreamHandler
if not LOGGER.handlers:
LOGGER.addHandler(logging.NullHandler())
def execute(self, identifier, wps_request, uuid):
"""Parse and perform Execute WPS request call
:param identifier: process identifier string
:param wps_request: pywps.WPSRequest structure with parsed inputs, still in memory
:param uuid: string identifier of the request
"""
self._set_grass()
response = None
try:
process = self.processes[identifier]
# make deep copy of the process instace
# so that processes are not overriding each other
# just for execute
process = copy.deepcopy(process)
workdir = os.path.abspath(
config.get_config_value('server', 'workdir'))
tempdir = tempfile.mkdtemp(prefix='pywps_process_', dir=workdir)
process.set_workdir(tempdir)
except KeyError:
raise InvalidParameterValue("Unknown process '%r'" % identifier,
'Identifier')
olddir = os.path.abspath(os.curdir)
try:
os.chdir(process.workdir)
response = self._parse_and_execute(process, wps_request, uuid)
finally:
os.chdir(olddir)
return response
def _set_grass(self):
"""Set environment variables needed for GRASS GIS support
"""
if not PY2:
LOGGER.debug('Python3 is not supported by GRASS')
return
gisbase = config.get_config_value('grass', 'gisbase')
if gisbase and os.path.isdir(gisbase):
LOGGER.debug('GRASS GISBASE set to %s' % gisbase)
os.environ['GISBASE'] = gisbase
os.environ['LD_LIBRARY_PATH'] = '{}:{}'.format(
os.environ.get('LD_LIBRARY_PATH'),
os.path.join(gisbase, 'lib'))
os.putenv('LD_LIBRARY_PATH', os.environ.get('LD_LIBRARY_PATH'))
os.environ['PATH'] = '{}:{}:{}'.format(
os.environ.get('PATH'), os.path.join(gisbase, 'bin'),
os.path.join(gisbase, 'scripts'))
os.putenv('PATH', os.environ.get('PATH'))
python_path = os.path.join(gisbase, 'etc', 'python')
os.environ['PYTHONPATH'] = '{}:{}'.format(
os.environ.get('PYTHONPATH'), python_path)
os.putenv('PYTHONPATH', os.environ.get('PYTHONPATH'))
sys.path.insert(0, python_path)
def __init__(self, processes=[], cfgfiles=None):
# ordered dict of processes
self.processes = OrderedDict((p.identifier, p) for p in processes)
if cfgfiles:
config.load_configuration(cfgfiles)
if config.get_config_value('logging', 'file') and config.get_config_value('logging', 'level'):
LOGGER.setLevel(getattr(logging, config.get_config_value('logging', 'level')))
if not LOGGER.handlers: # hasHandlers in Python 3.x
fh = logging.FileHandler(config.get_config_value('logging', 'file'))
fh.setFormatter(logging.Formatter(config.get_config_value('logging', 'format')))
LOGGER.addHandler(fh)
else: # NullHandler | StreamHandler
if not LOGGER.handlers:
LOGGER.addHandler(logging.NullHandler())
def _execute_xml_reference(self):
"""Return Reference node
"""
doc = WPS.Reference()
storage_option = config.get_config_value('remote-storage',
'storage_option')
if storage_option == 'ftp':
self.storage = FTPStorage()
elif storage_option == 'dropbox':
self.storage = DropboxStorage()
elif storage_option == 'googledrive':
self.storage = GoogleDriveStorage()
else:
self.storage = FileStorage()
# get_url will create the file and return the url for it
doc.attrib['{http://www.w3.org/1999/xlink}href'] = self.get_url()
if self.data_format:
if self.data_format.mime_type:
doc.attrib['mimeType'] = self.data_format.mime_type
if self.data_format.encoding:
doc.attrib['encoding'] = self.data_format.encoding
if self.data_format.schema:
doc.attrib['schema'] = self.data_format.schema
return doc
def archive_root():
value = configuration.get_config_value("data", "archive_root")
if value:
path_list = [path.strip() for path in value.split(':')]
LOGGER.debug("using archive root %s", path_list)
else:
path_list = []
return path_list
def calculate_max_input_size(self):
"""Calculates maximal size for input file based on configuration
and units
:return: maximum file size bytes
"""
max_size = configuration.get_config_value('server', 'maxsingleinputsize')
self.max_size = configuration.get_size_mb(max_size)
def max_input_size():
"""Calculates maximal size for input file based on configuration
and units.
:return: maximum file size in bytes
"""
ms = config.get_config_value('server', 'maxsingleinputsize')
return config.get_size_mb(ms) * 1024**2
def _construct_doc(self):
if not self.identifiers:
raise MissingParameterValue('Missing parameter value "identifier"', 'identifier')
template = self.template_env.get_template(self.version + '/describe/main.xml')
max_size = int(config.get_size_mb(config.get_config_value('server', 'maxsingleinputsize')))
doc = template.render(max_size=max_size, **self.json)
return doc
def test_default_mode(self):
"""Test pywps.formats.Format class
"""
self.assertEqual(configuration.get_config_value('processing', 'mode'),
'default')
process = pywps.processing.Process(
process=self.dummy_process,
wps_request=self.wps_request,
wps_response=self.wps_response)
# process.start()
self.assertTrue(isinstance(process, MultiProcessing))
def get_connection():
"""Get Connection for database
"""
LOGGER.debug('Initializing database connection')
global _CONNECTION
if _CONNECTION:
return _CONNECTION
database = configuration.get_config_value('server', 'logdatabase')
if not database:
database = ':memory:'
connection = sqlite3.connect(database)
if check_db_table(connection):
if check_db_columns(connection):
_CONNECTION = connection
else:
raise NoApplicableCode("""
Columns in the table 'pywps_requests' or 'pywps_stored_requests' in database '%s' are in
conflict
""" % database)
else:
_CONNECTION = sqlite3.connect(database, check_same_thread=False)
cursor = _CONNECTION.cursor()
createsql = """
CREATE TABLE pywps_requests(
uuid VARCHAR(255) not null primary key,
pid INTEGER not null,
operation varchar(30) not null,
version varchar(5) not null,
time_start text not null,
time_end text,
identifier text,
message text,
percent_done float,
status varchar(30)
)
"""
cursor.execute(createsql)
createsql = """
CREATE TABLE pywps_stored_requests(
uuid VARCHAR(255) not null primary key,
request BLOB not null
)
"""
cursor.execute(createsql)
_CONNECTION.commit()
return _CONNECTION
def _get_serviceinstance(self):
url = config.get_config_value("server", "url")
params = {'request': 'GetCapabilities', 'service': 'WPS'}
url_parts = list(urlparse.urlparse(url))
query = dict(urlparse.parse_qsl(url_parts[4]))
query.update(params)
url_parts[4] = urlencode(query)
return urlparse.urlunparse(url_parts).replace("&", "&")
def get_session():
"""Get Connection for database
"""
LOGGER.debug('Initializing database connection')
global _SESSION_MAKER
global _LAST_SESSION
if _LAST_SESSION:
_LAST_SESSION.close()
if _SESSION_MAKER:
_SESSION_MAKER.close_all()
_LAST_SESSION = _SESSION_MAKER()
return _LAST_SESSION
database = configuration.get_config_value('logging', 'database')
echo = True
level = configuration.get_config_value('logging', 'level')
level_name = logging.getLevelName(level)
if isinstance(level_name, int) and level_name >= logging.INFO:
echo = False
try:
if database.startswith("sqlite") or database.startswith("memory"):
engine = sqlalchemy.create_engine(database,
connect_args={'check_same_thread': False},
poolclass=StaticPool,
echo=echo)
else:
engine = sqlalchemy.create_engine(database, echo=echo, poolclass=NullPool)
except sqlalchemy.exc.SQLAlchemyError as e:
raise NoApplicableCode("Could not connect to database: {}".format(e.message))
Session = sessionmaker(bind=engine)
ProcessInstance.metadata.create_all(engine)
RequestInstance.metadata.create_all(engine)
_SESSION_MAKER = Session
_LAST_SESSION = _SESSION_MAKER()
return _LAST_SESSION
def _execute_process(self, async_, wps_request, wps_response):
"""Uses :module:`pywps.processing` module for sending process to
background BUT first, check for maxprocesses configuration value
:param async_: run in asynchronous mode
:return: wps_response or None
"""
maxparallel = int(config.get_config_value('server', 'parallelprocesses'))
running, stored = dblog.get_process_counts()
# async
if async_:
# run immedietly
LOGGER.debug("Running processes: {} of {} allowed parallelprocesses".format(running, maxparallel))
LOGGER.debug("Stored processes: {}".format(stored))
if running < maxparallel or maxparallel == -1:
wps_response._update_status(WPS_STATUS.ACCEPTED, u"PyWPS Request accepted", 0)
LOGGER.debug("Accepted request {}".format(self.uuid))
self._run_async(wps_request, wps_response)
# try to store for later usage
else:
maxprocesses = int(config.get_config_value('server', 'maxprocesses'))
if stored >= maxprocesses:
raise ServerBusy('Maximum number of processes in queue reached. Please try later.')
LOGGER.debug("Store process in job queue, uuid={}".format(self.uuid))
dblog.store_process(self.uuid, wps_request)
wps_response._update_status(WPS_STATUS.ACCEPTED, u'PyWPS Process stored in job queue', 0)
# not async
else:
if running >= maxparallel and maxparallel != -1:
raise ServerBusy('Maximum number of parallel running processes reached. Please try later.')
wps_response._update_status(WPS_STATUS.ACCEPTED, u"PyWPS Request accepted", 0)
wps_response = self._run_process(wps_request, wps_response)
return wps_response
def _store_process(self, stored, wps_request, wps_response):
"""Try to store given requests
"""
maxprocesses = int(config.get_config_value('server', 'maxprocesses'))
if stored < maxprocesses:
dblog.store_process(self.uuid, wps_request)
else:
raise ServerBusy('Maximum number of parallel running processes reached. Please try later.')
return wps_response
def execute(self, wps_request):
import multiprocessing
self.uuid = str(uuid4())
async = False
wps_response = WPSResponse(self, wps_request)
# check if status storage and updating are supported by this process
if wps_request.store_execute == 'true':
if self.store_supported != 'true':
raise StorageNotSupported('Process does not support the storing of the execute response')
file_path = config.get_config_value('server', 'outputPath')
file_url = '%s:%s%s' % (
config.get_config_value('wps', 'serveraddress'),
config.get_config_value('wps', 'serverport'),
config.get_config_value('server', 'outputUrl')
)
self.status_location = os.path.join(file_path, self.uuid) + '.xml'
self.status_url = os.path.join(file_url, self.uuid) + '.xml'
if wps_request.status == 'true':
if self.status_supported != 'true':
raise OperationNotSupported('Process does not support the updating of status')
wps_response.status = WPSResponse.STORE_AND_UPDATE_STATUS
async = True
else:
wps_response.status = WPSResponse.STORE_STATUS
# check if updating of status is not required then no need to spawn a process
if async:
process = multiprocessing.Process(target=self._run_process, args=(wps_request, wps_response))
process.start()
else:
wps_response = self._run_process(wps_request, wps_response)
return wps_response
