def lambda_handler(params, context):
'''
entrance to invoke AWS lambda,
variable params contains parameters passed in
'''
urls = {}
# arranging the paths
path = dataset.organize_path_lambda(params)
# save the config file
urls['config'] = dataset.save_remote_output(path['localSavePath'],
path['remoteSavePath'],
'config', params)
# prepare input dataset
df = dataset.get_remote_input(path['remoteReadPath'], path['filename'],
path['localReadPath'])
# execute the algorithm
output = algorithm(df, params)
# upload object to s3 bucket and return the url
for key, value in output.items():
if key != 'uid':
urls[key] = dataset.save_remote_output(path['localSavePath'],
path['remoteSavePath'], key,
value)
else:
urls[key] = value
return urls
# entrance to invoke Batch
urls = {}
# default parameters
parser = argparse.ArgumentParser(description="processing...")
parser.add_argument('--remoteReadPath', required=True)
parser.add_argument('--email', required=True)
parser.add_argument('--sessionURL', required=True)
params = vars(parser.parse_args())
# arranging the paths
path = dataset.organize_path_lambda(params)
# prepare input dataset
df = dataset.get_remote_input(path['remoteReadPath'],
path['filename'],
path['localReadPath'])
img_urls = []
source = path['remoteReadPath'].split('/')[-3]
if source == "reddit-Search" or source == "reddit-Post" \
or source == "crimson-Hexagon" or source == "reddit-Historical-Post"\
and 'url' in list(df.columns):
img_urls = df['url'].dropna().tolist()
elif source == "twitter-Tweet" or source == "twitter-Timeline" \
and 'entities.media.media_url' in list(df.columns):
img_urls = df['entities.media.media_url'].dropna().tolist()
elif source == 'flickr-Photo' and 'size.source' in list(df.columns):
img_urls = df['size.source'].dropna().tolist()