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Allow configuration to be defined in an ENV var

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If `ENV['VMPOOLER_CONFIG']` is defined, it is read in as a YAML
configuration.  This allows vmpooler to run in a docker daemon via
`docker run -e VMPOOLER_CONFIG -p 80:4567 -it vmpooler` rather than
embedding a YAML file within the container.
This commit is contained in:
Scott Schneider 2016-12-20 10:41:45 -08:00
parent c5aedc12cb
commit efe21b27cd
1 changed files with 11 additions and 4 deletions
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15
lib/vmpooler.rb
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@ -21,11 +21,18 @@ module Vmpooler
end
def self.config(filepath='vmpooler.yaml')
# Load the configuration file
config_file = File.expand_path(filepath)
parsed_config = YAML.load_file(config_file)
parsed_config = {}
# Set some defaults
if ENV['VMPOOLER_CONFIG']
# Load configuration from ENV
parsed_config = YAML.load(ENV['VMPOOLER_CONFIG'])
else
# Load the configuration file from disk
config_file = File.expand_path(filepath)
parsed_config = YAML.load_file(config_file)
end
# Set some configuration defaults
parsed_config[:redis] ||= {}
parsed_config[:redis]['server'] ||= 'localhost'
parsed_config[:redis]['data_ttl'] ||= 168