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Merge pull request #351 from nicklewis/randomer-names

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Generate a wider set of legal names
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Brandon High 2020-01-27 17:06:08 -08:00 • committed by GitHub
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1 changed files with 11 additions and 2 deletions
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13
lib/vmpooler/pool_manager.rb
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@ -269,8 +269,17 @@ module Vmpooler
end
def generate_and_check_hostname(pool_name)
# Generate a randomized hostname
random_name = [@name_generator.adjective(max: 7), @name_generator.noun(max: 7)].join('-')
# Generate a randomized hostname. The total name must no longer than 15
# character including the hyphen. The shortest adjective in the corpus is
# three characters long. Therefore, we can technically select a noun up to 11
# characters long and still be guaranteed to have an available adjective.
# Because of the limited set of 11 letter nouns and corresponding 3
# letter adjectives, we actually limit the noun to 10 letters to avoid
# inviting more conflicts. We favor selecting a longer noun rather than a
# longer adjective because longer adjectives tend to be less fun.
noun = @name_generator.noun(max: 10)
adjective = @name_generator.adjective(max: 14-noun.length)
random_name = [adjective, noun].join('-')
hostname = $config[:config]['prefix'] + random_name
available = $redis.hlen('vmpooler__vm__' + hostname) == 0