pulibrary / pdc_describe / 7031ff5b-e2d7-4285-af8b-e7b55adfc48a

7031ff5b-e2d7-4285-af8b-e7b55adfc48a

Pull #899

circleci

mccalluc 
Finish removal of explicit if-then in js
Pull Request #899: Move messages up to sidebar on the right which can be toggled

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74.47
/app/models/version_footer.rb
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# frozen_string_literal: true
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# Retrieves version information from Capistrano's files. The general approach is










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# to read the version information (branch name, git SHA, and date deployed) out










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# of Capistrano's revisions.log file.










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#










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# The code is a bit more complicated than it should because Capistrano does not










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# always update the revision.log file before the application reads this information.










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# Therefore there is logic in this class to detect if the version information is










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# stale and re-read it until it is up to date. Because re-reading this file is










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# an expensive operation we cache the information as soon as we are sure it's










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# current.










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#










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# rubocop:disable Style/ClassVars










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class VersionFooter




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  @@stale = true




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  @@git_sha = nil




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  @@branch = nil




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  @@version = nil




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  # Returns a hash with version information.










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  def self.info




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    reset! if stale?




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    { sha: git_sha, branch: branch, version: version, stale: stale?, tagged_release: tagged_release? }




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  end










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  def self.reset!




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    # Initalize these values so that they recalculated










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    @@git_sha = nil




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    @@branch = nil




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    @@version = nil




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  end










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  def self.stale?




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    return false if @@stale == false




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    # Only read the file when version information is stale










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    if File.exist?(revision_file)




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      local_sha = File.read(revision_file).chomp.gsub(/\)$/, "")




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      @@stale = local_sha != git_sha




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    else










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      @@stale = true




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    end










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  end










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  def self.git_sha




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    @@git_sha ||= if File.exist?(revisions_logfile)




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                    `tail -1 #{revisions_logfile}`.chomp.split(" ")[3].gsub(/\)$/, "")




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                  elsif Rails.env.development? || Rails.env.test?




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                    `git rev-parse HEAD`.chomp




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                  else










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                    "Unknown SHA"




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                  end










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  end










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  def self.tagged_release?




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    # e.g. v0.8.0










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    branch.match(/^v[\d+\.+]+/) != nil




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  end










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  def self.branch




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    @@branch ||= if File.exist?(revisions_logfile)




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                   `tail -1 #{revisions_logfile}`.chomp.split(" ")[1]




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                 elsif Rails.env.development? || Rails.env.test?




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                   `git rev-parse --abbrev-ref HEAD`.chomp




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                 else










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                   "Unknown branch"




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                 end










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  end










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  def self.version




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    @@version ||= if File.exist?(revisions_logfile)




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                    deployed = `tail -1 #{revisions_logfile}`.chomp.split(" ")[7]




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                    Date.parse(deployed).strftime("%d %B %Y")




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                  else










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                    "Not in deployed environment"




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                  end










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  end










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  # This file is local to the application.










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  # This file only has the git SHA of the version deployed (i.e. no date or branch)










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  def self.revision_file




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    @@revision_file ||= Rails.root.join("REVISION")




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  end










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  # Capistrano keeps this file a couple of levels up _outside_ the application.










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  # This file includes all the information that we need (git SHA, branch name, date)










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  def self.revisions_logfile




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    @@revisions_logfile ||= Rails.root.join("..", "..", "revisions.log")




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  end










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  # These assignment methods are needed to facilitate testing










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  def self.revision_file=(x)




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    @@stale = true




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    @@revision_file = x




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  end










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  def self.revisions_logfile=(x)




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    @@stale = true




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    @@revisions_logfile = x




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  end










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end










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# rubocop:enable RuboCop::Cop::Style::ClassVars
























    

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