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Diffstat (limited to 'nfvparser/toscaparser/shell.py')
-rw-r--r-- | nfvparser/toscaparser/shell.py | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/nfvparser/toscaparser/shell.py b/nfvparser/toscaparser/shell.py new file mode 100644 index 0000000..1d98f1a --- /dev/null +++ b/nfvparser/toscaparser/shell.py @@ -0,0 +1,120 @@ +# Licensed under the Apache License, Version 2.0 (the "License"); you may +# not use this file except in compliance with the License. You may obtain +# a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +# License for the specific language governing permissions and limitations +# under the License. + + +import argparse +import os +import sys + +from toscaparser.tosca_template import ToscaTemplate +from toscaparser.utils.gettextutils import _ +import toscaparser.utils.urlutils + +""" +CLI entry point to show how TOSCA Parser can be used programmatically + +This is a basic command line utility showing the entry point in the +TOSCA Parser and how to iterate over parsed template. It can be extended +or modified to fit an individual need. + +It can be used as, +#tosca-parser --template-file=<path to the YAML template> +#tosca-parser --template-file=<path to the CSAR zip file> +#tosca-parser --template-file=<URL to the template or CSAR> + +e.g. +#tosca-parser + --template-file=toscaparser/tests/data/tosca_helloworld.yaml +#tosca-parser + --template-file=toscaparser/tests/data/CSAR/csar_hello_world.zip +""" + + +class ParserShell(object): + + def get_parser(self, argv): + parser = argparse.ArgumentParser(prog="tosca-parser") + + parser.add_argument('--template-file', + metavar='<filename>', + required=True, + help=_('YAML template or CSAR file to parse.')) + + return parser + + def main(self, argv): + parser = self.get_parser(argv) + (args, extra_args) = parser.parse_known_args(argv) + path = args.template_file + if os.path.isfile(path): + self.parse(path) + elif toscaparser.utils.urlutils.UrlUtils.validate_url(path): + self.parse(path, False) + else: + raise ValueError(_('"%(path)s" is not a valid file.') + % {'path': path}) + + def parse(self, path, a_file=True): + output = None + tosca = ToscaTemplate(path, None, a_file) + + version = tosca.version + if tosca.version: + print("\nversion: " + version) + + if hasattr(tosca, 'description'): + description = tosca.description + if description: + print("\ndescription: " + description) + + if hasattr(tosca, 'inputs'): + inputs = tosca.inputs + if inputs: + print("\ninputs:") + for input in inputs: + print("\t" + input.name) + + if hasattr(tosca, 'nodetemplates'): + nodetemplates = tosca.nodetemplates + if nodetemplates: + print("\nnodetemplates:") + for node in nodetemplates: + print("\t" + node.name) + + # example of retrieving policy object + '''if hasattr(tosca, 'policies'): + policies = tosca.policies + if policies: + print("policies:") + for policy in policies: + print("\t" + policy.name) + if policy.triggers: + print("\ttriggers:") + for trigger in policy.triggers: + print("\ttrigger name:" + trigger.name)''' + + if hasattr(tosca, 'outputs'): + outputs = tosca.outputs + if outputs: + print("\noutputs:") + for output in outputs: + print("\t" + output.name) + + +def main(args=None): + if args is None: + args = sys.argv[1:] + ParserShell().main(args) + + +if __name__ == '__main__': + main() |