Class: Gel::Catalog::CompactIndex

Inherits:
Object
  • Object
show all
Includes:
Common
Defined in:
lib/gel/catalog/compact_index.rb

Constant Summary collapse

CACHE_TYPE = 
"index"

Instance Method Summary collapse

Methods included from Common

#gem_info

Constructor Details

#initialize ⇒ CompactIndex

Returns a new instance of CompactIndex.



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# File 'lib/gel/catalog/compact_index.rb', line 13

def initialize(*)
  super

  @gem_tokens = Hash.new("NONE")
  @needs_update = true
  @updating = false
  @active_gems = Set.new
  @pending_gems = Set.new
end

Instance Method Details

#prepare(gems) ⇒ Object 



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# File 'lib/gel/catalog/compact_index.rb', line 23

def prepare(gems)
  @monitor.synchronize do
    @pending_gems.merge(gems)
  end
  update
  @monitor.synchronize do
    @refresh_cond.wait_until { gems.all? { |g| _info(g) } }
  end
end

#refresh_gem(gem_name, immediate = true) ⇒ Object 



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# File 'lib/gel/catalog/compact_index.rb', line 76

def refresh_gem(gem_name, immediate = true)
  update

  already_active = nil
  @monitor.synchronize do
    if @updating && !@gem_tokens.key?(gem_name)
      @pending_gems << gem_name
      return
    end

    already_active = !@active_gems.add?(gem_name)
  end

  unless @gem_tokens.key?(gem_name)
    @monitor.synchronize do
      @gem_info[gem_name] = {}
      @refresh_cond.broadcast
      return
    end
  end

  error = lambda do |ex|
    @monitor.synchronize do
      @gem_info[gem_name] = ex
      @refresh_cond.broadcast
    end
  end

  pinboard.async_file(uri("info", gem_name), token: @gem_tokens[gem_name], only_updated: already_active, error: error) do |f|
    dependency_names = Set.new
    info = {}

    started = false
    f.each_line do |line|
      unless started
        started ||= line == "---\n"
        next
      end
      line.chop!

      version, rest = line.split(" ", 2)
      deps, attrs = rest.split("|", 2)

      deps = deps.split(",").map do |entry|
        key, constraints = entry.split(":", 2)
        constraints = constraints.split("&")
        [key, constraints]
      end

      attributes = { dependencies: deps }
      attrs.scan(/(\w+):((?:[^,]+|,(?!\w+:))*)/) do |key, value|
        attributes[key.to_sym] = value
      end

      deps.each do |name, _|
        dependency_names << name
      end

      info[version] = attributes
    end

    @monitor.synchronize do
      @gem_info[gem_name] = info
      @refresh_cond.broadcast
    end
  end
end

#update ⇒ Object 



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# File 'lib/gel/catalog/compact_index.rb', line 33

def update
  @monitor.synchronize do
    return false unless @needs_update
    @needs_update = false
    @updating = true
  end

  error = lambda do |ex|
    @monitor.synchronize do
      @error = ex
      @refresh_cond.broadcast
    end
  end

  pinboard.async_file(uri("versions"), tail: true, error: error) do |f|
    new_tokens = {}

    started = false
    f.each_line do |line|
      unless started
        started ||= line == "---\n"
        next
      end
      line.chop!

      name, _versions, token = line.split
      new_tokens[name] = token
    end

    @monitor.synchronize do
      @gem_tokens.update new_tokens
      @updating = false
      @refresh_cond.broadcast
    end

    (@active_gems | @pending_gems).each do |name|
      refresh_gem(name)
    end
  end

  true
end