Module: Utilities

Defined in:
lib/utilities.rb

Constant Summary collapse

EXIT_CODE_FAILURE = 
'Exit_Code_Failure'

Instance Method Summary collapse

Instance Method Details

#display_result(cmd_result) ⇒ Object

Takes the command result from run command and build a pretty display

Attributes

  • cmd_result - the command result hash

Returns

  • formatted text



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# File 'lib/utilities.rb', line 214

def display_result(cmd_result)
  result = "Process: #{cmd_result["pid"]}\nSTDOUT:\n#{cmd_result["stdout"]}\n"
  result = "STDERR:\n #{cmd_result["stderr"]}\n#{result}" if cmd_result["stderr"].length > 2
  result += "#{EXIT_CODE_FAILURE} Command returned: #{cmd_result["status"]}" if cmd_result["status"] != 0
  result
end

#dos_path(source_path, drive_letter = "C") ⇒ Object

Returns the dos path from a standard path

Attributes

  • source_path - path in standard “/” format

  • drive_letter - base drive letter if not included in path (defaults to C)

Returns

  • dos compatible path



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# File 'lib/utilities.rb', line 27

def dos_path(source_path, drive_letter = "C")
  path = ""
  return source_path.gsub("/", "\\") if source_path.include?(":\\")
  path_array = source_path.split("/")
  if path_array[1].length == 1 # drive letter
    path = "#{path_array[1]}:\\"
    path += path_array[2..-1].join("\\")
  else
    path = "#{drive_letter}:\\"
    path += path_array[1..-1].join("\\")
  end
  path
end

#execute_command(command) ⇒ Object 



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# File 'lib/utilities.rb', line 90

def execute_command(command)
  *commands=command
  if is_jruby? #TODO work around for buggy jruby implementation of popen3
    *commands = RbConfig::CONFIG['SHELL'], is_windows? ? "/C" : "-c", command
  end
  Open3.popen3(*commands) do |stdin, stdout, stderr, thread|
    logs = {:out => "", :err => ""}

    if block_given?
      { :out => stdout, :err => stderr }.each do |key, stream|
        Thread.new do
          while line = stream.gets
            privatized_line = BrpmAuto.privatize(line)
            logs[key] += privatized_line
            yield privatized_line
          end
        end if block_given?
      end

      thread.join
    else
      logs[:out] = stdout.read
      logs[:err] = stderr.read
    end

    return logs[:out], logs[:err], thread.pid, thread.value
  end
end

#execute_shell(command, sensitive_data = nil) ⇒ Object

Executes a command via shell

Attributes

  • command - command to execute on command line

Returns

  • command_run hash => <results>, stderr => any errors, pid => process id, status => exit_code



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# File 'lib/utilities.rb', line 49

def execute_shell(command, sensitive_data = nil)
  escaped_command = command.gsub("\\", "\\\\")

  loggable_command = BrpmAuto.privatize(escaped_command, sensitive_data)
  BrpmAuto.log "Executing '#{loggable_command}'..."

  cmd_result = {"stdout" => "","stderr" => "", "pid" => "", "status" => 1}

  output_dir = File.join(BrpmAuto.params.output_dir,"#{precision_timestamp}")
  errfile = "#{output_dir}_stderr.txt"
  complete_command = "#{escaped_command} 2>#{errfile}" unless is_windows?
  fil = File.open(errfile, "w+")
  fil.close

  begin
    cmd_result["stdout"] = `#{complete_command}`
    status = $?
    cmd_result["pid"] = status.pid
    cmd_result["status"] = status.to_i

    fil = File.open(errfile)
    stderr = fil.read
    fil.close

    if stderr.length > 2
      BrpmAuto.log "Command generated an error: #{stderr}"
      cmd_result["stderr"] = stderr
    end
  rescue Exception => e
    BrpmAuto.log "Command generated an error: #{e.message}"
    BrpmAuto.log "Back trace:\n#{e.backtrace}"

    cmd_result["status"] = -1
    cmd_result["stderr"] = "ERROR\n#{e.message}"
  end

  File.delete(errfile)

  cmd_result
end

#first_defined(first, second) ⇒ Object 



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# File 'lib/utilities.rb', line 322

def first_defined(first, second)
  if first and ! first.empty?
    return first
  else
    return second
  end
end

#get_keyword_items(script_content = nil) ⇒ Object

DEPRECATED - use substitute_tokens instead (token has the format rpmMY_TOKEN instead of $$MY_TOKEN to avid interference with shell variables)



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# File 'lib/utilities.rb', line 282

def get_keyword_items(script_content = nil)
  result = {}
  content = script_content unless script_content.nil?
  content = File.open(BrpmAuto.all_params["SS_script_file"]).read if script_content.nil?
  KEYWORD_SWITCHES.each do |keyword|
    reg = /\$\$\{#{keyword}\=.*\}\$\$/
    items = content.scan(reg)
    items.each do |item|
      result[keyword] = item.gsub("$${#{keyword}=","").gsub("}$$","").chomp("\"").gsub(/^\"/,"")
    end
  end
  result
end

#get_option(options, key, default_value = "") ⇒ Object

Provides a simple failsafe for working with hash options returns “” if the option doesn’t exist or is blank

Attributes

  • options - the hash

  • key - key to find in options

  • default_value - if entered will be returned if the option doesn’t exist or is blank



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# File 'lib/utilities.rb', line 136

def get_option(options, key, default_value = "")
  result = options.has_key?(key) ? options[key] : nil
  result = default_value if result.nil? || result == ""
  result
end

#get_staging_dir(version, force = false) ⇒ Object

Checks/Creates a staging directory

Attributes

  • force - forces creation of the path if it doesnt exist

Returns

staging path or ERROR_ if force is false and path does not exist



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# File 'lib/utilities.rb', line 264

def get_staging_dir(version, force = false)
  staging_path = defined?(RPM_STAGING_PATH) ? RPM_STAGING_PATH : File.join(BrpmAuto.all_params["SS_automation_results_dir"],"staging")
  pattern = File.join(staging_path, "#{Time.now.year.to_s}", path_safe(get_param("SS_application")), path_safe(get_param("SS_component")), path_safe(version))
  if force
    FileUtils.mkdir_p(pattern)
  else
    return pattern if File.exist?(pattern) # Cannot stage the same files twice
    return "ERROR_#{pattern}"
  end
  pattern
end

#is_jruby? ⇒ Boolean 



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# File 'lib/utilities.rb', line 11

def is_jruby?

  RbConfig::CONFIG['ruby_install_name'] =~ /jruby/i
end

#is_windows? ⇒ Boolean 



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# File 'lib/utilities.rb', line 7

def is_windows?
  RbConfig::CONFIG['host_os'] =~ /mswin|msys|mingw|cygwin|bccwin|wince|emc/i
end

#path_safe(txt) ⇒ Object

Returns a version of the string safe for a filname or path



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# File 'lib/utilities.rb', line 277

def path_safe(txt)
  txt.gsub(" ", "_").gsub(/\,|\[|\]/,"")
end

#precision_timestamp ⇒ Object

Returns a timestamp to the thousanth of a second

Returns

string timestamp 20140921153010456



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# File 'lib/utilities.rb', line 125

def precision_timestamp
  Time.now.strftime("%Y%m%d%H%M%S%L")
end

#privatize(expression, sensitive_data = BrpmAuto.params.private_params.values) ⇒ Object 



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# File 'lib/utilities.rb', line 296

def privatize(expression, sensitive_data = BrpmAuto.params.private_params.values)
  unless sensitive_data.nil? or sensitive_data.empty?
    sensitive_data = [sensitive_data] if sensitive_data.kind_of?(String)

    sensitive_data.each do |sensitive_string|
      expression = expression.gsub(sensitive_string, "********")
    end
  end

  expression
end

#read_shebang(os_platform, action_txt) ⇒ Object

Reads the Shebang in a shell script Supports deep format which can include wrapper information

Attributes

  • os_platform - windows or linux

  • action_txt - the body of the shell script (action)

Returns

shebang hash e.g. => “.bat”, “cmd” => “cmd /c”, “shebang” => “#![.bat]cmd /c ”



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# File 'lib/utilities.rb', line 181

def read_shebang(os_platform, action_txt)
  if os_platform.downcase =~ /win/
    result = {"ext" => ".bat", "cmd" => "cmd /c", "shebang" => ""}
  else
    result = {"ext" => ".sh", "cmd" => "/bin/bash ", "shebang" => ""}
  end
  if action_txt.include?("#![") # Custom shebang
    shebang = action_txt.scan(/\#\!.*/).first
    result["shebang"] = shebang
    items = shebang.scan(/\#\!\[.*\]/)
    if items.size > 0
      ext = items[0].gsub("#![","").gsub("]","")
      result["ext"] = ext if ext.start_with?(".")
      result["cmd"] = shebang.gsub(items[0],"").strip
    else
      result["cmd"] = shebang
    end
  elsif action_txt.include?("#!/") # Basic shebang
    result["shebang"] = "standard"
  else # no shebang
    result["shebang"] = "none"
  end
  result
end

#replace_in_file(file_path, pattern, replacement) ⇒ Object 



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# File 'lib/utilities.rb', line 330

def replace_in_file(file_path, pattern, replacement)
  file_content = File.read(file_path)

  File.open(file_path, "w") do |file|
    file << file_content.gsub(pattern, replacement)
  end
end

#required_option(options, key) ⇒ Object

Throws an error if an option is missing

great for checking if properties exist

Attributes

  • options - the options hash

  • key - key to find

Raises:

  • (ArgumentError) 


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# File 'lib/utilities.rb', line 149

def required_option(options, key)
  result = get_option(options, key)
  raise ArgumentError, "Missing required option: #{key}" if result == ""
  result
end

#split_nsh_path(path) ⇒ Object

Splits the server and path from an nsh path returns same path if no server prepended

Attributes

  • path - nsh path

Returns

array [server, path] server is blank if not present



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# File 'lib/utilities.rb', line 164

def split_nsh_path(path)
  result = ["",path]
  result[0] = path.split("/")[2] if path.start_with?("//")
  result[1] = "/#{path.split("/")[3..-1].join("/")}" if path.start_with?("//")
  result
end

#substitute_tokens(expression, params = nil) ⇒ Object 



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# File 'lib/utilities.rb', line 308

def substitute_tokens(expression, params = nil)
  return expression if expression.nil? || !expression.kind_of?(String)

  searchable_params = params || @all_params

  found_token = expression.match('rpm{[^{}]*}')
  while ! found_token.nil? do
    raise "Property #{found_token[0][4..-2]} doesn't exist" if searchable_params[found_token[0][4..-2]].nil?
    expression = expression.sub(found_token[0],searchable_params[found_token[0][4..-2]])
    found_token = expression.match('rpm{[^{}]*}')
  end
  return expression
end

#verify_success_terms(results, success_terms, fail_now = false, quiet = false) ⇒ Object

Looks for terms in the results and builds an exit message returns status message with “Command_Failed if the status fails”

Attributes

  • results - the text to analyze for success

  • success_terms - the term or terms (use | or & for and and or with multiple terms)

  • fail_now - if set to true will throw an error if a term is not found

Returns

  • text - summary of success terms



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# File 'lib/utilities.rb', line 230

def verify_success_terms(results, success_terms, fail_now = false, quiet = false)
  results.split("\n").each{|line| exit_status = line if line.start_with?("EXIT_CODE:") }
  if success_terms != ""
    exit_status = []
    c_type = success_terms.include?("|") ? "or" : "and"
    success = [success_terms] if !success_terms.include?("|") || !success_terms.include?("&")
    success = success_terms.split("|") if success_terms.include?("|")
    success = success_terms.split("&") if success_terms.include?("&")
    success.each do |term|
      if results.include?(term)
        exit_status << "Success - found term: #{term}"
      else
        exit_status << "Command_Failed: term not found: #{term}"
      end
    end
    status = exit_status.join(", ")
    status.gsub!("Command_Failed:", "") if status.include?("Success") if c_type == "or"
  else
    status = "Success (because nothing was tested)"
  end
  log status unless quiet
  raise "ERROR: success term not found" if fail_now && status.include?("Command_Failed")
  status
end