Module: AstroboaCLI::Util

Included in:
Command, Command::Base
Defined in:
lib/astroboa-cli/util.rb

Defined Under Namespace

Classes: TemplateError

Instance Method Summary collapse

Instance Method Details

#ask ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 92

def ask
  STDIN.gets.strip
end

#astroboa_running? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 270

def astroboa_running?
  server_config = get_server_configuration
  jboss_dir = File.join(server_config['install_dir'], 'torquebox', 'jboss')
  system %(ps -ef | grep "org.jboss.as.standalone -Djboss.home.dir=#{jboss_dir}" | grep -vq grep)
end

#check_if_running_with_sudo ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 240

def check_if_running_with_sudo
  display "You need sudo privileges to run this command. Checking..."
  error <<-MSG.gsub(/^ {6}/, '') unless running_with_sudo?
  You are not running with sudo privileges. Please run astroboa-cli with sudo
  If you installed ruby with 'rbenv' you need to install 'rbenv-sudo' plugin and then run 'rbenv sudo astroboa-cli <COMMAND>'
  For 'rbenv-sudo' installation check ruby installation instructions at https://github.com/betaconcept/astroboa-cli
  If you manage your rubies with 'rvm' the you should use the 'rvmsudo' command: 'rvmsudo astroboa-cli <COMMAND>'
  MSG
  
  display "Running with sudo privileges: OK"
end

#create_postgresql_db(server_configuration, database_name) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 502

def create_postgresql_db(server_configuration, database_name)
  load_pg_library
  
  database_admin, database_admin_password, database_server = get_postgresql_config(server_configuration)
  
  begin
    conn = PG.connect(
      host:     database_server, 
      port:     '5432', 
      dbname:   'postgres', 
      user:     database_admin, 
      password: database_admin_password)

    # check if db exists
    res = conn.exec("SELECT COUNT(*) FROM pg_database WHERE datname=$1",[database_name])
    unless res.entries[0]['count'].to_i == 0
      display "Database #{database_name} exists. You may run the command with --db_name repo_db_name to specify a different database name" 
      raise
    end
    
    display "Check that database #{database_name} does not exist: OK"
    
    res = conn.exec("CREATE DATABASE #{database_name} ENCODING 'UNICODE'")
    if res.result_status == PG::Result::PGRES_COMMAND_OK
      display %(Create Postges database "#{database_name}" : OK)
    else
      display "Failed to create postgres database #{database_name}. The error is #{res.error_message}"
      raise 
    end
  rescue PG::Error => e
    display %(An error has occured during the creation of postgres database "#{database_name}")
    display %(The error is: "#{e.message}")
    display %(The error trace is \n #{e.backtrace.join("\n")})
    raise
  ensure
    conn.finish if conn && !conn.finished?
  end
end

#delete_file_content_between_regex(filename, from_regex, to_regex) ⇒ Object

Delete file lines between two regular expressions, /foo/ and /bar/, including the lines that match the regular expressions, e.g. delete file lines between two comments, including the comments from_regex and to_regex should be specified without leading and trailing slashes i.e. “string_to_match” and not “/string_to_match/”



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# File 'lib/astroboa-cli/util.rb', line 194

def delete_file_content_between_regex(filename, from_regex, to_regex)
  from_regex_obj = %r{#{from_regex}}
  to_regex_obj = %r{#{to_regex}}
  found_boundary = false
  file_lines = File.readlines(filename)
  File.open(filename, "w") do |f|
    file_lines.each do |line|
      found_boundary = true if line =~ from_regex_obj
      f.puts line unless found_boundary
      found_boundary = false if line =~ to_regex_obj
    end
  end
end

#delete_file_lines(filename, lines_to_delete) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 209

def delete_file_lines(filename, lines_to_delete)
  file_lines = File.readlines(filename)
  lines_to_delete.each do |index|
    file_lines.delete_at(index)
  end 
  File.open(filename, "w") do |f| 
    f.write lines_to_delete.join
  end
end

#dir_writable?(dir) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 253

def dir_writable?(dir)
  until FileTest.directory?(dir)
    dir = File.dirname(dir)
  end
  File.writable? dir
end

#display(msg = "", new_line = true, add_to_log = true) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 57

def display(msg="", new_line=true, add_to_log=true)
  if new_line
    puts(msg)
  else
    print(msg)
    STDOUT.flush
  end
  log.info msg if add_to_log
end

#drop_postgresql_db(server_configuration, database_name) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 542

def drop_postgresql_db(server_configuration, database_name)
  load_pg_library
  
  database_admin, database_admin_password, database_server = get_postgresql_config(server_configuration)
  
  begin
    conn = PG.connect(
      :host     => database_server, 
      :port     => '5432', 
      :dbname   => 'postgres', 
      :user     => database_admin, 
      :password => database_admin_password)

    # check if db exists
    res = conn.exec("SELECT COUNT(*) FROM pg_database WHERE datname=$1",[database_name])
    if res.entries[0]['count'] == 0 
      display "Cannot remove database #{database_name} because it does not exist"
      raise
    end

    res = conn.exec("DROP DATABASE #{database_name}")
    if res.result_status == PG::Result::PGRES_COMMAND_OK
      display %(Delete Postges database "#{database_name}" : OK)
    else
      display "Failed to delete postgres database #{database_name}. The error is #{res.error_message}"
      raise 
    end

  rescue PG::Error => e
    display %(An error has occured during the deletion of postgres database "#{database_name}")
    display %(The error is: "#{e.message}")
    display %(The error trace is \n #{e.backtrace.join("\n")})
    raise
  ensure
    conn.finish if conn && !conn.finished?
  end
end

#error(msg, add_to_log = true) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 68

def error(msg, add_to_log=true)
  STDERR.puts(format_with_bang(msg))
  log.error msg if add_to_log   
  exit 1
end

#extract_archive_command(archive_name) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 147

def extract_archive_command(archive_name)
  case archive_name
  when /(tar.gz)|(tgz)$/
    'tar xzf'
  when /(tar.bz2)|(tb2)$/
    'tar xjf'
  when /tar$/
    'tar xf'
  when /zip$/
    'unzip -o -q'
  else
    fail "Unknown binary archive format: #{archive_name}"
  end
end

#fail(message) ⇒ Object

Raises:



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# File 'lib/astroboa-cli/util.rb', line 75

def fail(message)
  raise AstroboaCLI::Command::CommandFailed, message
end

#format_with_bang(message) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 80

def format_with_bang(message)
  return '' if message.to_s.strip == ""
  " !    " + message.split("\n").join("\n !    ")
end

#gem_available?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 261

def gem_available?(name)
   Gem::Specification.find_by_name(name)
rescue Gem::LoadError
   false
rescue
   Gem.available?(name)
end

#get_password(msg) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 602

def get_password(msg)
  password = ""
  print msg.blue.underline
  begin
    system "stty -echo 2>/dev/null"
    password = STDIN.gets.chomp
    system "stty echo 2>/dev/null"
    puts
    password
  rescue => e
    system "stty echo"
    error "An error occurred. The error is: #{e.message}"
  end
end

#get_postgresql_config(server_configuration) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 459

def get_postgresql_config(server_configuration)
  database_admin = server_configuration['database_admin']
  database_admin_password = server_configuration['database_admin_password']
  database_server = server_configuration['database_server']
  return database_admin, database_admin_password, database_server
end

#get_server_conf_file ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 277

def get_server_conf_file
  return File.expand_path(File.join("~", ".astroboa-conf.yml")) if mac_os_x?
  return File.join(File::SEPARATOR, 'etc', 'astroboa', 'astroboa-conf.yml')
end

#get_server_configuration ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 290

def get_server_configuration
  server_conf_file = get_server_conf_file
  return YAML.load(File.read(server_conf_file)) if File.exists? server_conf_file
  error "Server configuration file: '#{server_conf_file}' does not exist"
end

#has_executable(path) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 107

def has_executable(path)
  # If the path includes a forward slash, we're checking
  # an absolute path. Otherwise, we're checking a global executable
  if path.include?('/')
    commands = "test -x #{path}"
  else
    command = "[ -n \"`echo \\`which #{path}\\``\" ]"
  end
  process_os_command command
end

#has_executable_with_version(path, version, get_version = '-v') ⇒ Object

Same as has_executable but with checking for e certain version number. If version number contains dots it, they should be escaped, e.g. “1\.6” Last option is the parameter to append for getting the version (which defaults to “-v”).



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# File 'lib/astroboa-cli/util.rb', line 123

def has_executable_with_version(path, version, get_version = '-v')
  if path.include?('/')
    command = "[ -x #{path} -a -n \"`#{path} #{get_version} 2>&1 | egrep -e \\\"#{version}\\\"`\" ]"
  else
    command = "[ -n \"`echo \\`which #{path}\\``\" -a -n \"`\\`which #{path}\\` #{get_version} 2>&1 | egrep -e \\\"#{version}\\\"`\" ]"
  end
  process_os_command command
end

#has_version_in_grep(cmd, version) ⇒ Object

Same as has_executable but checking output of a certain command with grep.



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# File 'lib/astroboa-cli/util.rb', line 135

def has_version_in_grep(cmd, version)
   process_os_command "[ -n \"`#{cmd} 2> /dev/null | egrep -e \\\"#{version}\\\"`\" ]"
end

#jruby_ok? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 411

def jruby_ok?
  install_jruby_with_rvm_message =<<-RVM_INSTALL_MESSAGE
  We recommend to install jruby using the "RVM" utility command
  To install "rvm" for a single user (i.e. the user that will run astroboa-cli) login as the user and run the following command:

  user$ curl -L get.rvm.io | bash -s stable 

  For multi-user installation and detailed rvm installation instructions check: https://rvm.io/rvm/install/    

  After RVM has been installed run the following commands to install jruby:
  rvm install jruby-1.6.7
  rvm use jruby-1.6.7
  RVM_INSTALL_MESSAGE

  jruby_not_running_message =<<-JRUBY_MESSAGE
  It seems that you are not running jruby.
  Astroboa requires jruby version 1.6.7 or above. 
  Please install jruby version 1.6.7 or above and run the astroboa-cli command again

  #{install_jruby_with_rvm_message}
  JRUBY_MESSAGE

  jruby_wrong_version_message =<<-JRUBY_VERSION_MESSAGE
  It seems that you are not running the required jruby version
  Your jruby version is: #{JRUBY_VERSION}
  Astroboa requires jruby version 1.6.7 or above. 
  Please install jruby version 1.6.7 or above and run the astroboa-cli command again

  #{install_jruby_with_rvm_message}
  JRUBY_VERSION_MESSAGE

  ruby_wrong_version_message =<<-RUBY_VERSION_MESSAGE
  It seems that you are not running jruby in 1.9 mode.
  Your current Ruby Version is: #{RUBY_VERSION} 
  Astroboa requires your jruby to run in 1.9 mode. 
  To make jruby run in 1.9 mode add the following to your .bash_profile
  export JRUBY_OPTS=--1.9 

  You need to logout and login or run "source ~/.bash_profile" in order to activate this setting
  RUBY_VERSION_MESSAGE

  error jruby_not_running_message unless runs_with_jruby?
  error jruby_wrong_version_message unless jruby_version_ok?
  error ruby_wrong_version_message unless ruby_version_ok?
  display "Checking if you are running jruby version 1.6.7 or above in 1.9 mode: OK"
end

#jruby_version_ok? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 340

def jruby_version_ok?
  return false unless defined? JRUBY_VERSION

  jruby_version_numbers = JRUBY_VERSION.split(".")

  return false unless jruby_version_numbers[0].to_i == 1 && 
    ((jruby_version_numbers[1].to_i == 6 && jruby_version_numbers[2].to_i >= 7) || jruby_version_numbers[1].to_i == 7)
  return true
end

#linux? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 230

def linux?
  RbConfig::CONFIG['host_os'] =~ /linux/i
end

#load_pg_library ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 467

def load_pg_library
  # try to load the 'pg' library if repository is backed by postgres 
  error <<-MSG unless gem_available?('pg')
  You should manually install the 'pg' gem if you want to create repositories backed by postgres
  astroboa-cli gem does not automatically install 'pg' gem since in some environments (e.g. MAC OS X) this might require 
  to have a local postgres already installed, which in turn is too much if you do not care about postgres.
	In *Ubuntu Linux* run first 'sudo apt-get install libpq-dev' and then run 'gem install pg'.
	For MAC OS x read http://deveiate.org/code/pg/README-OS_X_rdoc.html to learn how to install the 'pg' gem.
  MSG

  require 'pg'  
end

#longest(items) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 102

def longest(items)
  items.map { |i| i.to_s.length }.sort.last
end

#mac_os_x? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 225

def mac_os_x?
  RbConfig::CONFIG['host_os'] =~ /darwin/i
end

#output_with_bang(message = "", new_line = true) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 86

def output_with_bang(message="", new_line=true)
  return if message.to_s.strip == ""
  display(format_with_bang(message), new_line)
end

#postgres_connectivity?(database_server, database_user, database_user_password) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 481

def postgres_connectivity?(database_server, database_user, database_user_password)
  load_pg_library
  
  begin
    conn = PG.connect(
      host:     database_server, 
      port:     '5432', 
      dbname:   'postgres', 
      user:     database_user, 
      password: database_user_password)
      conn != nil ? true : false
  rescue PG::Error => e
    display %(An error has occured while trying to establish a connection to postgres database)
    display %(The error is: "#{e.message}")
    false
  ensure
    conn.finish if conn && !conn.finished?
  end
end

#process_os_command(command) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 140

def process_os_command(command)
  system command
  return false if $?.to_i != 0
  return true
end

#render_template_to_file(template_path, context, file_path) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 175

def render_template_to_file(template_path, context, file_path)
  require 'erubis'

  begin
    template = File.read template_path
    eruby = Erubis::Eruby.new(template)
    File.open file_path, "w" do |f|
      f << eruby.evaluate(context)
    end
  rescue Object => e
    raise TemplateError.new(e, template, context)
  end

end

#repository?(server_configuration, repository_name) ⇒ Boolean

check that repo is consistently configured, i.e Its directory exists AND it is specified in server configuration AND its repo config file exists

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 324

def repository?(server_configuration, repository_name)
  repos_dir = server_configuration['repos_dir']
  astroboa_dir = server_configuration['install_dir']
  repo_dir = File.join(repos_dir, repository_name)
  
  return true if File.exists?(repo_dir) && repository_in_repos_config?(repos_dir, repository_name) && repository_in_server_config?(server_configuration, repository_name)
  
  return false;
end

#repository_in_repos_config?(repos_dir, repository_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 302

def repository_in_repos_config?(repos_dir, repository_name)
  astroboa_repos_config = File.join(repos_dir, "repositories-conf.xml")

  repo_conf = nil

  if File.exists? astroboa_repos_config
    File.open(astroboa_repos_config, 'r') do |f|
      repo_conf = Nokogiri::XML(f) do |config|
        config.noblanks
      end
    end
    
    repo_nodes = repo_conf.xpath(%(//repository[@id="#{repository_name}"]))
    return true if !repo_nodes.empty?
  end

  return false
end

#repository_in_server_config?(server_config, repo_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 297

def repository_in_server_config?(server_config, repo_name)
  return server_config.has_key?('repositories') && server_config['repositories'].has_key?(repo_name)
end

#ruby_ok? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 361

def ruby_ok?
  ruby_installation_instructions_message =<<-RUBY_INSTALL_MESSAGE
  You can easily install ruby with 'rbenv' or 'rvm' utility programs.

  ----------------------------------
  We recommend to install ruby using the 'rbenv' and 'ruby-build' utility commands.
  On Mac OS X  to install 'rbenv' and 'ruby-build' using the Homebrew (http://mxcl.github.com/homebrew/) package manager do:
    $ brew update
    $ brew install rbenv
    $ brew install ruby-build

  To install ruby version 2.1.1 do:
    $ rbenv install 2.1.1

  To set the global version of Ruby to be used in all your shells do:
    $ rbenv global 2.1.1

  To set ruby 2.1.1 as a local per-project ruby version by writing the version name to an .rbenv-version file in the current directory do:

    $ rbenv local 2.1.1

  To set ruby 2.1.1 as the version to be used only in the current shell (sets the RBENV_VERSION environment variable in your shell) do:

    $ rbenv shell 2.1.1

  ------------------------------- 
  If you prefer to use 'rvm' as your ruby management utility use the following command to install it for a single user:

  user$ curl -L get.rvm.io | bash -s stable 

  For multi-user installation and detailed rvm installation instructions check: https://rvm.io/rvm/install/    

  After 'rvm' has been installed run the following commands to install ruby 2.1.1:
  rvm install 2.1.1
  rvm use 2.1.1
  RUBY_INSTALL_MESSAGE

  ruby_wrong_version_message =<<-RUBY_VERSION_MESSAGE
  It seems that you are not running ruby 1.9.x. or later
  Your current Ruby Version is: #{RUBY_VERSION} 
  Astroboa CLI requires your ruby version to be 1.9.x or later (e.g. 1.9.2 or 1.9.3 or 2.1.1).

  #{ruby_installation_instructions_message}
  RUBY_VERSION_MESSAGE

  error ruby_wrong_version_message unless ruby_version_ok?
  #display "Checking if your ruby version is 1.9.x: OK"
end

#ruby_version_ok? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 351

def ruby_version_ok?
  return false unless defined? RUBY_VERSION

  ruby_version_numbers = RUBY_VERSION.split(".")

  return false unless (ruby_version_numbers[0].to_i == 1 && ruby_version_numbers[1].to_i >= 9) || ruby_version_numbers[0].to_i == 2
  return true
end

#running_with_sudo? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 235

def running_with_sudo?
  Process.uid == 0
end

#runs_with_jruby? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 335

def runs_with_jruby?
  (defined? RUBY_ENGINE && RUBY_ENGINE == 'jruby') || RUBY_PLATFORM == "java"
end

#save_server_configuration(server_configuration) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 283

def save_server_configuration(server_configuration)
  File.open(get_server_conf_file, "w") do |f|
    f.write(YAML.dump(server_configuration))
  end
end

#shell(cmd) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 97

def shell(cmd)
  FileUtils.cd(Dir.pwd) {|d| return `#{cmd}`}
end

#strip_text_nodes(xml_doc) ⇒ Object

remove leading and trailing white space from XML Document text nodes xml_doc should be a Nokogiri::XML:Document or Nokogiri::XML::Node



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# File 'lib/astroboa-cli/util.rb', line 583

def strip_text_nodes xml_doc
  xml_doc.traverse do |node|
    if node.text?
      node.content = node.content.strip
    end
  end
end

#unzip_file(file, destination) ⇒ Object 



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# File 'lib/astroboa-cli/util.rb', line 163

def unzip_file (file, destination)
  Zip::ZipFile.open(file) { |zip_file|
   zip_file.each { |f|
     next unless f.file?
     f_path=File.join(destination, f.name)
     FileUtils.mkdir_p(File.dirname(f_path))
     zip_file.extract(f, f_path) unless File.exist?(f_path)
   }
  }
end

#windows? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/astroboa-cli/util.rb', line 220

def windows?
  RbConfig::CONFIG['host_os'] =~ /mswin/i
end

#write_xml(document, file_full_path) ⇒ Object

write XML document to a file document should be a Nokogiri::XML:Document or Nokogiri::XML::Node



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# File 'lib/astroboa-cli/util.rb', line 593

def write_xml document, file_full_path
  strip_text_nodes document

  File.open(file_full_path, 'w') do |f|
    document.write_xml_to(f, :indent => 1, :indent_text => "\t", :encoding => 'UTF-8')
  end
end