Class: LgPodPlugin::LCache

Inherits:
Object
  • Object
show all
Defined in:
lib/lg_pod_plugin/l_cache.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(workspace) ⇒ LCache

Returns a new instance of LCache.



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# File 'lib/lg_pod_plugin/l_cache.rb', line 13

def initialize(workspace)
  self.workspace = workspace
  self.cache_root = LFileManager.cache_workspace(self.workspace)
end

Class Method Details

.cache_pod(name, target, options = {}) ⇒ Object

拷贝 pod 缓存文件到 sandbox



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# File 'lib/lg_pod_plugin/l_cache.rb', line 144

def self.cache_pod(name, target, options = {})
  hash_map = Hash.new.deep_merge(options).reject do |key, val|
    !key || !val
  end
  request = LCache.download_request(name, hash_map)
  result, pods_pecs = get_local_spec(request, target)
  result.location = nil
  result.checkout_options = hash_map
  pods_pecs.each do |s_name, s_spec|
    destination = path_for_pod(request, :name => name, :params => hash_map)
    unless File.exist?(destination)
      LgPodPlugin.log_green "Copying #{name} from `#{target}` to `#{destination}` "
      copy_and_clean(target, destination, s_spec)
    end
    cache_pod_spec = path_for_spec(request, :name => name, :params => result.checkout_options)
    unless File.exist?(cache_pod_spec)
      write_spec(s_spec, cache_pod_spec)
    end
    if request.name == s_name
      result.location = destination
    end

  end

end

.cached_spec(request) ⇒ Object 



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# File 'lib/lg_pod_plugin/l_cache.rb', line 51

def self.cached_spec(request)
  path = path_for_spec(request)
  path.file? && Specification.from_file(path)
rescue JSON::ParserError
  nil
end

.copy_and_clean(source, destination, spec) ⇒ Object 



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# File 'lib/lg_pod_plugin/l_cache.rb', line 90

def self.copy_and_clean(source, destination, spec)
  specs_by_platform = group_sub_specs_by_platform(spec)
  destination.parent.mkpath
  self.write_lock(destination) do
    FileUtils.rm_rf(destination)
    FileUtils.cp_r(source, destination)
    Pod::Installer::PodSourcePreparer.new(spec, destination).prepare!
    Pod::Sandbox::PodDirCleaner.new(destination, specs_by_platform).clean!
  end
end

.download_request(name, params) ⇒ Object 



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# File 'lib/lg_pod_plugin/l_cache.rb', line 36

def self.download_request(name, params)
  Pod::Downloader::Request.new(spec: nil, released: false, name: name, params: params)
end

.get_local_spec(request, target) ⇒ Object 



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# File 'lib/lg_pod_plugin/l_cache.rb', line 58

def self.get_local_spec(request, target)
  result = Pod::Downloader::Response.new
  result.location = target
  if request.released_pod?
    result.spec = request.spec
    local_specs = { request.name => request.spec }
    return [request, local_specs]
  else
    local_specs = {}
    pods_pecs = Pod::Sandbox::PodspecFinder.new(target).podspecs
    pods_pecs[request.name] = request.spec if request.spec
    pods_pecs.each do |name, spec|
      if request.name == name
        result.spec = spec
        local_specs[request.name] = spec
      end
    end
  end
  [result, local_specs]
end

.group_sub_specs_by_platform(spec) ⇒ Object 



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# File 'lib/lg_pod_plugin/l_cache.rb', line 79

def self.group_sub_specs_by_platform(spec)
  specs_by_platform = {}
  [spec, *spec.recursive_subspecs].each do |ss|
    ss.available_platforms.each do |platform|
      specs_by_platform[platform] ||= []
      specs_by_platform[platform] << ss
    end
  end
  specs_by_platform
end

.lock(location, lock_type) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/lg_pod_plugin/l_cache.rb', line 105

def self.lock(location, lock_type)
  raise ArgumentError, 'no block given' unless block_given?
  lockfile = "#{location}.lock"
  f = nil
  loop do
    f.close if f
    f = File.open(lockfile, File::CREAT, 0o644)
    f.flock(lock_type)
    break if self.valid_lock?(f, lockfile)
  end
  begin
    yield location
  ensure
    if lock_type == File::LOCK_SH
      f.flock(File::LOCK_EX)
      File.delete(lockfile) if self.valid_lock?(f, lockfile)
    else
      File.delete(lockfile)
    end
    f.close
  end
end

.path_for_pod(request, slug_opts = {}) ⇒ Object 



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# File 'lib/lg_pod_plugin/l_cache.rb', line 40

def self.path_for_pod(request, slug_opts = {})
  root = self.root_path
  root + request.slug(**slug_opts)
end

.path_for_spec(request, slug_opts = {}) ⇒ Object 



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# File 'lib/lg_pod_plugin/l_cache.rb', line 45

def self.path_for_spec(request, slug_opts = {})
  root = self.root_path
  path = root + 'Specs' + request.slug(**slug_opts)
  Pathname.new(path.to_path + '.podspec.json')
end

.root_path ⇒ Object 



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# File 'lib/lg_pod_plugin/l_cache.rb', line 31

def self.root_path
  path = File.join(Dir.home, "Library/Caches/CocoaPods/Pods")
  Pathname(path)
end

.valid_lock?(file, filename) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/lg_pod_plugin/l_cache.rb', line 128

def self.valid_lock?(file, filename)
  file.stat.ino == File.stat(filename).ino
rescue Errno::ENOENT
  false
end

.write_lock(location, &block) ⇒ Object 



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# File 'lib/lg_pod_plugin/l_cache.rb', line 101

def self.write_lock(location, &block)
  self.lock(location, File::LOCK_EX, &block)
end

.write_spec(spec, path) ⇒ Object 



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# File 'lib/lg_pod_plugin/l_cache.rb', line 134

def self.write_spec(spec, path)
  path.dirname.mkpath
  Pod::Downloader::Cache.write_lock(path) do
    path.open('w') { |f|
      f.write spec.to_pretty_json
    }
  end
end

Instance Method Details

#find_pod_cache(name, options) ⇒ Object

判断缓存是否存在且有效命中缓存



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# File 'lib/lg_pod_plugin/l_cache.rb', line 19

def find_pod_cache(name, options)
  hash_map = Hash.new.merge!(options)
  request = LCache.download_request(name, hash_map)
  destination = LCache.path_for_pod(request, {})
  cache_pod_spec = LCache.path_for_spec(request, {})
  if File.exist?(destination) && File.exist?(cache_pod_spec)
    false
  else
    true
  end
end