Bug #848: Add 3.1.0 migrator, it will truncate existing names with more than 128 chars.

install.sh

@@ -654,6 +654,7 @@ ONEDB_MIGRATOR_FILES="src/onedb/2.0_to_2.9.80.rb \
                       src/onedb/2.9.80_to_2.9.85.rb \
                       src/onedb/2.9.85_to_2.9.90.rb \
                       src/onedb/2.9.90_to_3.0.rb \
+                      src/onedb/3.0_to_3.1.0.rb \
                       src/onedb/onedb.rb \
                       src/onedb/onedb_backend.rb"
 

src/onedb/3.0_to_3.1.0.rb

@@ -0,0 +1,71 @@
+# -------------------------------------------------------------------------- *
+# 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.                                             *
+# -------------------------------------------------------------------------- *
+
+require "rexml/document"
+include REXML
+
+module Migrator
+    def db_version
+        "3.1.0"
+    end
+
+    def one_version
+        "OpenNebula 3.1.0"
+    end
+
+    def up
+        [   [:group_pool,   "group"],
+            [:host_pool,    "host"],
+            [:image_pool,   "image"],
+            [:network_pool, "network"],
+            [:template_pool,"template"],
+            [:user_pool,    "user"],
+            [:vm_pool,      "vm"]
+        ].each { |pair|
+            # Check that all objects have names shorter that 128
+            check_names(pair[0], pair[1])
+
+            # Change the name column to 128 chars. In SQLite, ALTER COLUMN is
+            # not supported, but since the char limit is ignored,
+            # VARCHAR(128) and VARCHAR(256) are the same type
+            if ( self.class == BackEndMySQL )
+                @db.run "ALTER TABLE #{pair[0]} CHANGE name name VARCHAR(128);"
+            end
+        }
+
+        return true
+    end
+
+    def check_names(table, elem)
+        @db.fetch("SELECT * FROM #{table}") do |row|
+            if ( row[:name].length > 128 )
+                # Element name is bigger than 128 chars
+                new_name = "#{elem}-#{row[:oid]}-#{row[:name][0..99]}"
+
+                doc = Document.new(row[:body])
+
+                doc.root.each_element("NAME") { |e|
+                    e.text = new_name
+
+                    @db[table].filter(:oid => row[:oid]).update(
+                        :name => new_name,
+                        :body => doc.root.to_s)
+                }
+
+                puts "    > #{elem} ##{row[:oid]} had a name bigger than 128 chars and has been renamed to #{new_name[0..10]}..."
+            end
+        end
+    end
+end