Class: Bosh::Cli::VersionsIndex

Inherits:
Object
  • Object
show all
Includes:
VersionCalc
Defined in:
lib/cli/versions_index.rb

Instance Method Summary collapse

Methods included from VersionCalc

#major_version, #minor_version, #version_cmp, #version_greater, #version_less, #version_same

Constructor Details

#initialize(storage_dir, name_prefix = nil) ⇒ VersionsIndex

Returns a new instance of VersionsIndex.



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# File 'lib/cli/versions_index.rb', line 7

def initialize(storage_dir, name_prefix = nil)
  @storage_dir = File.expand_path(storage_dir)
  @index_file  = File.join(@storage_dir, "index.yml")
  @name_prefix = name_prefix

  if File.file?(@index_file)
    init_index(load_yaml_file(@index_file, nil))
  else
    init_index({})
  end
end

Instance Method Details

#[](fingerprint) ⇒ Object 



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# File 'lib/cli/versions_index.rb', line 26

def [](fingerprint)
  @data["builds"][fingerprint]
end

#add_version(fingerprint, item, tmp_file_path = nil) ⇒ Object 



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# File 'lib/cli/versions_index.rb', line 57

def add_version(fingerprint, item, tmp_file_path = nil)
  version = item["version"]

  if version.blank?
    raise InvalidIndex,
          "Cannot save index entry without knowing its version"
  end

  create_directories

  if tmp_file_path
    FileUtils.cp(tmp_file_path, filename(version), :preserve => true)
  end

  @data["builds"].each_pair do |fp, build|
    if version_cmp(build["version"], version) == 0 && fp != fingerprint
      raise "Trying to add duplicate version `#{version}' " +
                "into index `#{@index_file}'"
    end
  end

  @data["builds"][fingerprint] = item
  if tmp_file_path
    file_sha1 = Digest::SHA1.file(tmp_file_path).hexdigest
    @data["builds"][fingerprint]["sha1"] = file_sha1
  end

  File.open(@index_file, "w") do |f|
    f.write(YAML.dump(@data))
  end

  File.expand_path(filename(version))
end

#filename(version) ⇒ Object 



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# File 'lib/cli/versions_index.rb', line 91

def filename(version)
  name = @name_prefix.blank? ?
      "#{version}.tgz" : "#{@name_prefix}-#{version}.tgz"
  File.join(@storage_dir, name)
end

#find_by_checksum(checksum) ⇒ Object 



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# File 'lib/cli/versions_index.rb', line 19

def find_by_checksum(checksum)
  @data["builds"].each_pair do |fingerprint, build_data|
    return build_data if build_data["sha1"] == checksum
  end
  nil
end

#latest_version(major = nil) ⇒ Object 



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# File 'lib/cli/versions_index.rb', line 30

def latest_version(major = nil)
  builds = @data["builds"].values

  if major
    builds = builds.select do |build|
      major_version(build["version"]) == major
    end
  end

  return nil if builds.empty?

  sorted = builds.sort do |build1, build2|
    cmp = version_cmp(build2["version"], build1["version"])
    if cmp == 0
      raise "There is a duplicate version `#{build1["version"]}' " +
              "in index `#{@index_file}'"
    end
    cmp
  end

  sorted[0]["version"]
end

#version_exists?(version) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cli/versions_index.rb', line 53

def version_exists?(version)
  File.exists?(filename(version))
end