Class: KubeManifest::CLI::Exec

Inherits:
Object
  • Object
show all
Includes:
Utils
Defined in:
lib/kube_manifest/cli.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Utils

#expand_dir, #merge_hash_recursive, #symbolize_keys, #transform_to_hash

Constructor Details

#initialize(options: {}, values: {}, filenames: []) ⇒ Exec

Returns a new instance of Exec.



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# File 'lib/kube_manifest/cli.rb', line 83

def initialize(options: {}, values: {}, filenames: [])
  @options = options
  @values = values
  @filenames = filenames
  @cwd = nil
end

Instance Attribute Details

#cwd ⇒ Object

Returns the value of attribute cwd.



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# File 'lib/kube_manifest/cli.rb', line 81

def cwd
  @cwd
end

#filenames ⇒ Object

Returns the value of attribute filenames.



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# File 'lib/kube_manifest/cli.rb', line 81

def filenames
  @filenames
end

#options ⇒ Object

Returns the value of attribute options.



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# File 'lib/kube_manifest/cli.rb', line 81

def options
  @options
end

#values ⇒ Object

Returns the value of attribute values.



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# File 'lib/kube_manifest/cli.rb', line 81

def values
  @values
end

Class Method Details

.run(filenames, values, mixin: nil, cwd: nil, verbose: false) ⇒ Object 



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# File 'lib/kube_manifest/cli.rb', line 159

def self.run(filenames, values, mixin: nil, cwd: nil, verbose: false)
  if mixin.is_a? String
    mixin = if Pathname.new(mixin).absolute?
              mixin
            else
              Pathname.new(File.join(Dir.pwd, mixin)).expand_path.to_s
            end
  end

  if verbose
    STDERR.write "# Loading #{mixin}\n"
    STDERR.flush
  end
  KubeManifest::Runner.load_mixin!(mixin)

  collected = filenames.inject([]) do |result, filename|
    if filename == '-'
      result << filename
    else
      filename = if Pathname.new(filename).absolute?
                   filename
                 else
                   Pathname.new(File.join(Dir.pwd, filename)).expand_path.to_s
                 end
      if File.directory? filename
        result << Dir["#{filename}/*.rb"]
      elsif File.exists? filename
        result << filename
      end
    end

    result
  end.flatten.uniq.reject{ |f| f == mixin }
  if verbose
    STDERR.write "# Collected #{collected.join(',')}\n"
    STDERR.flush
  end

  collected.inject([]) do |result, filename|
    if filename == '-'
      ctx = KubeManifest::Runner.new(STDIN.read, values: values).ctx
      result << ctx
    else
      file = File.open(filename)
      STDERR.write "# Processing #{filename}\n" if verbose
      ctx = KubeManifest::Runner.new(file.read, values: values, cwd: [cwd, File.dirname(filename)]).ctx
      if ctx.is_a? Array
        ctx.each do |m|
          result << m
        end
      elsif ctx
        result << ctx
      end
    end

    result
  end
end

Instance Method Details

#parse_options! ⇒ Object 



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# File 'lib/kube_manifest/cli.rb', line 90

def parse_options!
  parser = OptionParser.new do |opts|
    opts.banner = "Usage: rkube-manifest template [options] filename"

    opts.on('--set KEY=VALUE', String, 'Set values') do |v|
      @options[:values] ||= []
      @options[:values] << v
    end

    opts.on('-f VALUE_FILE', '--values VALUE_FILE', String, 'Read values from a YAML file and override') do |v|
      @options[:values_file] = v
    end

    opts.on('-v', '--[no-]verbose', 'Run verbosely. The log would be be write into stderr') do |v|
      @options[:verbose] = v
    end

    opts.on('-m METHODS_FILE', '--methods METHODS_FILE', String, 'Import methods from a given file') do |v|
      @options[:method_file] = v
    end

    opts.on("-h", "--help", "Prints this help") do
      puts opts
      exit
    end
  end

  parser.parse!

  command = ARGV.shift
  if command != 'template'
    STDERR.write "Error: unknown command: #{command}\n"
    STDERR.write parser.banner
    STDERR.write "\n"
    exit 1
  end
  @filenames = ARGV || []
  if @filenames.empty?
    STDERR.write "Error: File or directory not given\n"
    STDERR.write parser.banner
    STDERR.write "\n"
    exit 1
  end
end

#run ⇒ Object 



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# File 'lib/kube_manifest/cli.rb', line 135

def run
  self.load_values!
  mixin = if @options[:method_file] && File.exist?(@options[:method_file])
            @options[:method_file]
          else
            nil
          end

  if @options[:verbose]
    STDERR.write "# Processing manifests within #{@cwd} with values:\n"
    STDERR.write "#{@values.pretty_inspect.gsub(/^/, '#  ')}"
    STDERR.flush
  end
  self.class.run(@filenames, @values, cwd: @cwd, mixin: mixin, verbose: @options[:verbose])
end

#run! ⇒ Object 



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# File 'lib/kube_manifest/cli.rb', line 151

def run!
  manifests = run
  STDOUT.write manifests.map{|m|m.as_yaml}.join("\n")
rescue
  STDERR.write "Error: #{$!.message}\n"
  exit 2
end