4fbd9cdd56
Check for presence of the optional attributes before extracting their value. Change-Id: Ic017f2d7926938cf78b353f608b2e6015841bd4f Closes-Bug: #1522131
107 lines
3.4 KiB
Python
107 lines
3.4 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import os
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import sys
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from toscaparser.tosca_template import ToscaTemplate
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from toscaparser.utils.gettextutils import _
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import toscaparser.utils.urlutils
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"""
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CLI entry point to show how TOSCA Parser can be used programmatically
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This is a basic command line utility showing the entry point in the
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TOSCA Parser and how to iterate over parsed template. It can be extended
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or modified to fit an individual need.
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It can be used as,
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#tosca-parser --template-file=<path to the YAML template>
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#tosca-parser --template-file=<path to the CSAR zip file>
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#tosca-parser --template-file=<URL to the template or CSAR>
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e.g.
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#tosca-parser
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--template-file=toscaparser/tests/data/tosca_helloworld.yaml
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#tosca-parser
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--template-file=toscaparser/tests/data/CSAR/csar_hello_world.zip
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"""
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class ParserShell(object):
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def _validate(self, args):
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if len(args) < 1:
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msg = _('The program requires a template or a CSAR file as an '
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'argument. Please refer to the usage documentation.')
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raise ValueError(msg)
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if "--template-file=" not in args[0]:
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msg = _('The program expects "--template-file" as the first '
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'argument. Please refer to the usage documentation.')
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raise ValueError(msg)
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def main(self, args):
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self._validate(args)
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path = args[0].split('--template-file=')[1]
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if os.path.isfile(path):
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self.parse(path)
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elif toscaparser.utils.urlutils.UrlUtils.validate_url(path):
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self.parse(path, False)
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else:
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raise ValueError(_('"%(path)s" is not a valid file.')
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% {'path': path})
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def parse(self, path, a_file=True):
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output = None
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tosca = ToscaTemplate(path, None, a_file)
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version = tosca.version
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if tosca.version:
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print ("\nversion: " + version)
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if hasattr(tosca, 'description'):
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description = tosca.description
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if description:
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print ("\ndescription: " + description)
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if hasattr(tosca, 'inputs'):
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inputs = tosca.inputs
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if inputs:
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print ("\ninputs:")
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for input in inputs:
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print ("\t" + input.name)
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if hasattr(tosca, 'nodetemplates'):
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nodetemplates = tosca.nodetemplates
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if nodetemplates:
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print ("\nnodetemplates:")
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for node in nodetemplates:
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print ("\t" + node.name)
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if hasattr(tosca, 'outputs'):
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outputs = tosca.outputs
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if outputs:
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print ("\noutputs:")
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for output in outputs:
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print ("\t" + output.name)
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def main(args=None):
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if args is None:
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args = sys.argv[1:]
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ParserShell().main(args)
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if __name__ == '__main__':
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main()
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