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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,194 @@ | ||
| """lambda function used for image generation in aws lambda with cumulus""" | ||
| # pylint: disable=R0801 | ||
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| import json | ||
| import logging | ||
| import os | ||
| from shutil import rmtree | ||
| import requests | ||
| import botocore | ||
| from cumulus_process import Process, s3 | ||
| from cumulus_logger import CumulusLogger | ||
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| cumulus_logger = CumulusLogger('forge_branching') | ||
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| def clean_tmp(remove_matlibplot=True): | ||
| """ Deletes everything in /tmp """ | ||
| temp_folder = '/tmp' | ||
| temp_files = os.listdir(temp_folder) | ||
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| cumulus_logger.info("Removing everything in tmp folder {}".format(temp_files)) | ||
| for filename in os.listdir(temp_folder): | ||
| file_path = os.path.join(temp_folder, filename) | ||
| try: | ||
| if os.path.isfile(file_path) or os.path.islink(file_path): | ||
| os.unlink(file_path) | ||
| elif os.path.isdir(file_path): | ||
| if filename.startswith('matplotlib'): | ||
| if remove_matlibplot: | ||
| rmtree(file_path) | ||
| else: | ||
| rmtree(file_path) | ||
| except OSError as ex: | ||
| cumulus_logger.error('Failed to delete %s. Reason: %s' % (file_path, ex)) | ||
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| temp_files = os.listdir(temp_folder) | ||
| cumulus_logger.info("After Removing everything in tmp folder {}".format(temp_files)) | ||
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| class FootprintBranch(Process): | ||
| """ | ||
| Image generation class to generate image for a granule file and upload to s3 | ||
| Attributes | ||
| ---------- | ||
| processing_regex : str | ||
| regex for nc file to generate image | ||
| logger: logger | ||
| cumulus logger | ||
| config: dictionary | ||
| configuration from cumulus | ||
| Methods | ||
| ------- | ||
| process() | ||
| main function ran for image generation | ||
| get_config() | ||
| downloads configuration file for tig | ||
| """ | ||
|
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| def __init__(self, *args, **kwargs): | ||
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| self.processing_regex = '(.*\\.nc$)' | ||
| super().__init__(*args, **kwargs) | ||
| self.logger = cumulus_logger | ||
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| def clean_all(self): | ||
| """ Removes anything saved to self.path """ | ||
| rmtree(self.path) | ||
| clean_tmp() | ||
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| def download_file_from_s3(self, s3file, working_dir): | ||
| """ Download s3 file to local | ||
| Parameters | ||
| ---------- | ||
| s3file: str | ||
| path location of the file Ex. s3://my-internal-bucket/dataset-config/MODIS_A.2019.cfg | ||
| working_dir: str | ||
| local directory path where the s3 file should be downloaded to | ||
| Returns | ||
| ---------- | ||
| str | ||
| full path of the downloaded file | ||
| """ | ||
| try: | ||
| return s3.download(s3file, working_dir) | ||
| except botocore.exceptions.ClientError as ex: | ||
| self.logger.error("Error downloading file %s: %s" % (s3file, working_dir), exc_info=True) | ||
| raise ex | ||
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| def get_config(self): | ||
| """Get configuration file for image generations | ||
| Returns | ||
| ---------- | ||
| str | ||
| string of the filepath to the configuration | ||
| """ | ||
| config_url = os.environ.get("CONFIG_URL") | ||
| config_name = self.config['collection']['name'] | ||
| config_bucket = os.environ.get('CONFIG_BUCKET') | ||
| config_dir = os.environ.get("CONFIG_DIR") | ||
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| if config_url: | ||
| file_url = "{}/{}.cfg".format(config_url, config_name) | ||
| response = requests.get(file_url, timeout=60) | ||
| cfg_file_full_path = "{}/{}.cfg".format(self.path, config_name) | ||
| with open(cfg_file_full_path, 'wb') as file_: | ||
| file_.write(response.content) | ||
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| elif config_bucket and config_dir: | ||
| config_s3 = 's3://{}.cfg'.format(os.path.join(config_bucket, config_dir, config_name)) | ||
| cfg_file_full_path = self.download_file_from_s3(config_s3, self.path) | ||
| else: | ||
| raise ValueError('Environment variable to get configuration files were not set') | ||
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| return cfg_file_full_path | ||
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| def process(self): | ||
| """Main process to generate images for granules | ||
| Returns | ||
| ---------- | ||
| dict | ||
| Payload that is returned to the cma which is a dictionary with list of granules | ||
| """ | ||
|
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| config_file_path = self.get_config() | ||
| with open(config_file_path) as config_f: | ||
| read_config = json.load(config_f) | ||
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| forge_type = read_config.get('forge_version', 'java') | ||
| self.input['forge_version'] = forge_type | ||
| return self.input | ||
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| @classmethod | ||
| def handler(cls, event, context=None, path=None, noclean=False): | ||
| """ General event handler """ | ||
| return cls.run(path=path, noclean=noclean, context=context, **event) | ||
|
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| @classmethod | ||
| def run(cls, *args, **kwargs): | ||
| """ Run this payload with the given Process class """ | ||
| noclean = kwargs.pop('noclean', False) | ||
| process = cls(*args, **kwargs) | ||
| try: | ||
| output = process.process() | ||
| finally: | ||
| if not noclean: | ||
| process.clean_all() | ||
| return output | ||
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| def handler(event, context): | ||
| """handler that gets called by aws lambda | ||
| Parameters | ||
| ---------- | ||
| event: dictionary | ||
| event from a lambda call | ||
| context: dictionary | ||
| context from a lambda call | ||
| Returns | ||
| ---------- | ||
| string | ||
| A CMA json message | ||
| """ | ||
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| levels = { | ||
| 'critical': logging.CRITICAL, | ||
| 'error': logging.ERROR, | ||
| 'warn': logging.WARNING, | ||
| 'warning': logging.WARNING, | ||
| 'info': logging.INFO, | ||
| 'debug': logging.DEBUG | ||
| } | ||
| logging_level = os.environ.get('LOGGING_LEVEL', 'info') | ||
| cumulus_logger.logger.level = levels.get(logging_level, 'info') | ||
| cumulus_logger.setMetadata(event, context) | ||
| clean_tmp() | ||
| result = FootprintBranch.cumulus_handler(event, context=context) | ||
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| result['meta']['collection']['meta']['workflowChoice']['forge_version'] = result['payload']['forge_version'] | ||
| del result['payload']['forge_version'] | ||
| return result | ||
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| if __name__ == "__main__": | ||
| FootprintBranch.cli() |
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