Class: Fbe::Iterate

Inherits:
Object
  • Object
show all
Defined in:
lib/fbe/iterate.rb

Overview

Iterate.

Author

Yegor Bugayenko (yegor256@gmail.com)

Copyright

Copyright © 2024 Zerocracy

License

MIT

Instance Method Summary collapse

Constructor Details

#initialize(fb, loog) ⇒ Iterate

Returns a new instance of Iterate.



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# File 'lib/fbe/iterate.rb', line 41

def initialize(fb, loog)
  @fb = fb
  @loog = loog
  @label = nil
  @since = 0
  @query = nil
  @repeats = 1
  @quota_aware = false
end

Instance Method Details

#as(label) ⇒ Object 



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# File 'lib/fbe/iterate.rb', line 67

def as(label)
  raise 'Label is already set' unless @label.nil?
  raise 'Cannot set "label" to nil' if label.nil?
  @label = label
end

#by(query) ⇒ Object 



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# File 'lib/fbe/iterate.rb', line 61

def by(query)
  raise 'Query is already set' unless @query.nil?
  raise 'Cannot set query to nil' if query.nil?
  @query = query
end

#over ⇒ Object

It makes a number of repeats of going through all repositories provided by the “repositories” configuration option. In each “repeat” it yields the repository ID and a number that is retrieved by the “query”. The query is supplied with two parameter: “$before” (the value from the previous repeat and “$rid” (the repo ID).



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# File 'lib/fbe/iterate.rb', line 78

def over(&)
  raise 'Use "as" first' if @label.nil?
  raise 'Use "by" first' if @query.nil?
  seen = {}
  oct = Fbe.octo(loog: @loog)
  repos = Fbe.unmask_repos(loog: @loog)
  restarted = []
  loop do
    repos.each do |repo|
      next if restarted.include?(repo)
      seen[repo] = 0 if seen[repo].nil?
      if seen[repo] >= @repeats
        @loog.debug("We've seen too many in the #{repo} repo, time to move to the next one")
        next
      end
      rid = oct.repo_id_by_name(repo)
      before = Fbe.fb.query(
        "(agg (and (eq what '#{@label}') (eq where 'github') (eq repository #{rid})) (first latest))"
      ).one
      Fbe.fb.query("(and (eq what '#{@label}') (eq where 'github') (eq repository #{rid}))").delete!
      before = before.nil? ? @since : before.first
      nxt = Fbe.fb.query(@query).one(before:, repository: rid)
      after =
        if nxt.nil?
          @loog.debug("Next is nil, starting from the beginning at #{@since}")
          restarted << repo
          @since
        else
          @loog.debug("Next is #{nxt}, starting from it...")
          yield(rid, nxt)
        end
      raise "Iterator must return an Integer, while #{after.class} returned" unless after.is_a?(Integer)
      f = Fbe.fb.insert
      f.where = 'github'
      f.repository = rid
      f.latest =
        if after.nil?
          @loog.debug("After is nil at #{repo}, setting the `latest` to nxt: #{nxt}")
          nxt
        else
          @loog.debug("After is #{after} at #{repo}, setting the `latest` to it")
          after
        end
      f.what = @label
      seen[repo] += 1
      if oct.off_quota
        @loog.debug('We are off GitHub quota, time to stop')
        break
      end
    end
    if oct.off_quota
      @loog.debug('We are off GitHub quota, time to stop')
      break
    end
    unless seen.values.any? { |v| v < @repeats }
      @loog.debug('No more repos to scan, quitting')
      break
    end
  end
  @loog.debug("Finished scanning #{repos.size} repos: #{seen.map { |k, v| "#{k}:#{v}" }.join(', ')}")
end

#quota_aware ⇒ Object 



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# File 'lib/fbe/iterate.rb', line 51

def quota_aware
  @quota_aware = true
end

#repeats(repeats) ⇒ Object 



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# File 'lib/fbe/iterate.rb', line 55

def repeats(repeats)
  raise 'Cannot set "repeats" to nil' if repeats.nil?
  raise 'The "repeats" must be a positive integer' unless repeats.positive?
  @repeats = repeats
end