feature #575: added scripts_common for ruby

install.sh

@@ -258,6 +258,9 @@ INSTALL_FILES=(
     LIB_FILES:$LIB_LOCATION
     RUBY_LIB_FILES:$LIB_LOCATION/ruby
     RUBY_OPENNEBULA_LIB_FILES:$LIB_LOCATION/ruby/OpenNebula
+    MAD_RUBY_LIB_FILES:$LIB_LOCATION/ruby
+    MAD_RUBY_LIB_FILES:$LIB_LOCATION/remotes
+    MAD_RUBY_LIB_FILES:$VAR_LOCATION/remotes
     MAD_SH_LIB_FILES:$LIB_LOCATION/sh
     MAD_SH_LIB_FILES:$LIB_LOCATION/remotes
     MAD_SH_LIB_FILES:$VAR_LOCATION/remotes
@@ -415,11 +418,12 @@ RUBY_OPENNEBULA_LIB_FILES="src/oca/ruby/OpenNebula/Host.rb \
 
 
 #-----------------------------------------------------------------------------
-# MAD ShellScript library files, to be installed under $LIB_LOCATION/sh
+# MAD Script library files, to be installed under $LIB_LOCATION/<script lang>
 # and remotes directory
 #-----------------------------------------------------------------------------
 
 MAD_SH_LIB_FILES="src/mad/sh/scripts_common.sh"
+MAD_RUBY_LIB_FILES="src/mad/ruby/scripts_common.rb"
 
 #-------------------------------------------------------------------------------
 # Driver executable files, to be installed under $LIB_LOCATION/mads

src/mad/ruby/scripts_common.rb

@@ -0,0 +1,70 @@
+# -------------------------------------------------------------------------- #
+# Copyright 2002-2011, OpenNebula Project Leads (OpenNebula.org)             #
+#                                                                            #
+# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
+# not use this file except in compliance with the License. You may obtain    #
+# a copy of the License at                                                   #
+#                                                                            #
+# http://www.apache.org/licenses/LICENSE-2.0                                 #
+#                                                                            #
+# Unless required by applicable law or agreed to in writing, software        #
+# distributed under the License is distributed on an "AS IS" BASIS,          #
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
+# See the License for the specific language governing permissions and        #
+# limitations under the License.                                             #
+#--------------------------------------------------------------------------- #
+
+module OpenNebula
+
+    # Generic log function
+    def self.log_function(severity, message)
+        STDERR.puts "#{severity}: #{File.basename $0}: #{message}"
+    end
+	
+    # Logs an info message
+    def self.log_info(message)
+        log_function("INFO", message)
+    end
+
+    # Logs an error message
+    def self.log_error(message)
+        log_function("ERROR", message)
+    end
+
+    # Logs a debug message
+    def self.log_debug(message)
+        log_function("DEBUG", message)
+    end
+
+    # Alias log to log_info in the singleton class
+    class << self
+        alias :log :log_info
+    end
+
+    # This function is used to pass error message to the mad
+    def self.error_message(message)
+        STDERR.puts "ERROR MESSAGE --8<------"
+        STDERR.puts message
+        STDERR.puts "ERROR MESSAGE ------>8--"
+    end
+
+    # Executes a command, if it fails returns error message and exits
+    # If a second parameter is present it is used as the error message when
+    # the command fails
+    def self.exec_and_log(command, message=nil)
+        output=`#{command} 2>&1 1>/dev/null`
+        code=$?
+        if code!=0
+            log_error "Command \"#{command}\" failed."
+            log_error output
+            if !message
+                error_message output
+            else
+                error_message message
+            end
+            exit code
+        end
+        log "Executed \"#{command}\"."
+    end
+
+end