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105 lines
3.0 KiB
Python
105 lines
3.0 KiB
Python
#!/usr/bin/env python
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#
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain 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,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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#
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##
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## Edit a properties config file and replace values based on
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## the ENV variables
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## export my-key=new-value
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## ./apply-config-from-env file.conf
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##
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import os, sys
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if len(sys.argv) < 2:
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print('Usage: %s' % (sys.argv[0]))
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sys.exit(1)
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# Always apply env config to env scripts as well
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conf_files = sys.argv[1:]
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PF_ENV_PREFIX = 'PULSAR_PREFIX_'
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PF_ENV_DEBUG = (os.environ.get('PF_ENV_DEBUG','0') == '1')
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for conf_filename in conf_files:
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lines = [] # List of config file lines
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keys = {} # Map a key to its line number in the file
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# Load conf file
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for line in open(conf_filename):
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lines.append(line)
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line = line.strip()
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if not line:
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continue
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try:
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k,v = line.split('=', 1)
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if k.startswith('#'):
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k = k[1:]
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keys[k.strip()] = len(lines) - 1
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except:
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if PF_ENV_DEBUG:
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print("[%s] skip Processing %s" % (conf_filename, line))
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# Update values from Env
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for k in sorted(os.environ.keys()):
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v = os.environ[k].strip()
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# Hide the value in logs if is password.
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if "password" in k:
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displayValue = "********"
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else:
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displayValue = v
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if k.startswith(PF_ENV_PREFIX):
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k = k[len(PF_ENV_PREFIX):]
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if k in keys:
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print('[%s] Applying config %s = %s' % (conf_filename, k, displayValue))
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idx = keys[k]
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lines[idx] = '%s=%s\n' % (k, v)
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# Add new keys from Env
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for k in sorted(os.environ.keys()):
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v = os.environ[k]
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if not k.startswith(PF_ENV_PREFIX):
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continue
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# Hide the value in logs if is password.
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if "password" in k:
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displayValue = "********"
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else:
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displayValue = v
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k = k[len(PF_ENV_PREFIX):]
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if k not in keys:
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print('[%s] Adding config %s = %s' % (conf_filename, k, displayValue))
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lines.append('%s=%s\n' % (k, v))
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else:
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print('[%s] Updating config %s = %s' % (conf_filename, k, displayValue))
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lines[keys[k]] = '%s=%s\n' % (k, v)
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# Store back the updated config in the same file
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f = open(conf_filename, 'w')
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for line in lines:
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f.write(line)
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f.close()
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