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authorLusheng Ji <lji@research.att.com>2017-10-15 19:28:04 -0400
committerLusheng Ji <lji@research.att.com>2017-10-15 19:28:12 -0400
commit6ca8167d142706460889976d5cac17b45dbfa010 (patch)
tree199d98fe1219b0ce70a44ccbb08f954a74365d29 /scripts/detemplate-bpinputs.py
parent92e9cafbeeda9c482ad39cbd71abc60b9cac17ab (diff)
Add BP input detemplating script
Issue-Id: DCAEGEN2-128 Change-Id: I0461f1b3041682b21bcf8d3cf0e1eacbbd669ed9 Signed-off-by: Lusheng Ji <lji@research.att.com>
Diffstat (limited to 'scripts/detemplate-bpinputs.py')
-rwxr-xr-xscripts/detemplate-bpinputs.py92
1 files changed, 92 insertions, 0 deletions
diff --git a/scripts/detemplate-bpinputs.py b/scripts/detemplate-bpinputs.py
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+++ b/scripts/detemplate-bpinputs.py
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+# ============LICENSE_START=======================================================
+# org.onap.dcae
+# ================================================================================
+# Copyright (c) 2017 AT&T Intellectual Property. All rights reserved.
+# ================================================================================
+# 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.
+# ============LICENSE_END=========================================================
+#
+# ECOMP is a trademark and service mark of AT&T Intellectual Property.
+
+import os, sys
+from sets import Set
+from jinja2 import Environment, PackageLoader, FileSystemLoader, meta
+
+'''
+@contextfunction
+def get_exported_names(context):
+ return sorted(context.exported_vars)
+'''
+
+def build_context( jjt_directory ):
+ context = {}
+ for file in os.listdir(jjt_directory):
+ if file.endswith(".txt"):
+ with open(os.path.join(jjt_directory, file), 'r') as parameter_file:
+ value = parameter_file.readline().rstrip()
+ key = file.split('.txt', 1)[0]
+ context[key] = value
+ return context
+
+
+def render_template(tpl_path, context):
+ path, filename = os.path.split(tpl_path)
+ return Environment(loader = FileSystemLoader(path)).get_template(filename).render(context)
+
+
+def check_templates(jjt_directory, template_file_dir):
+ all_variables = Set([])
+ env = Environment(loader=FileSystemLoader(template_file_dir))
+
+
+ for infname in os.listdir(template_file_dir):
+ template_source = env.loader.get_source(env, infname)[0]
+ parsed_content = env.parse(template_source)
+ referenced_variables = meta.find_undeclared_variables(parsed_content)
+ all_variables.update(referenced_variables)
+
+ context_variables = Set(build_context(jjt_directory).keys())
+ undefined_variables = all_variables - context_variables
+
+ if undefined_variables:
+ print("Error: referenced but unprovided variables: {}".format(undefined_variables))
+ exit(1)
+ else:
+ print("All referenced template variables found. Proceed with de-templating")
+
+
+# using context provided in jjt_directory to de-tempatize blueprint inputs in in_directory to out_directory
+def detemplate_bpinputs(jjt_directory, in_directory, out_directory):
+ context = build_context(jjt_directory)
+
+ for infname in os.listdir(in_directory):
+ infpath = os.path.join(in_directory, infname)
+ outfpath = os.path.join(out_directory, infname)
+ with open(outfpath, 'w') as f:
+ print ('detemplating {} to {}'.format(infpath, outfpath))
+ inputs = render_template(infpath, context)
+ f.write(inputs)
+
+def main():
+ if len(sys.argv) != 4:
+ print("Usgae: {} variable_def_dir template_dir template_output_dir".format(sys.argv[0]))
+ exit(1)
+
+ print("De-templatizing templates in {} using variable defs from {}, results in {}".format(sys.argv[1], sys.argv[2], sys.argv[3]))
+ check_templates(sys.argv[1], sys.argv[2])
+ detemplate_bpinputs(sys.argv[1], sys.argv[2], sys.argv[3])
+
+
+########################################
+if __name__ == "__main__":
+ main()