Enable OnlineBackup [#149 state:resolved]

config/neo4j/config.yml

@@ -19,6 +19,9 @@ lucene: { fulltext: { provider: lucene,
 # If set to true it you can use the database while it is migrating.
 migration_thread: false
 
+# If online backup should be available, if it is the Online JAR file will be loaded.
+online_backup_enabled: false
+
 #use the clustered Neo4j GraphDatabase (org.neo4j.kernel.HighlyAvailableGraphDatabase)
 ha.db: false
 

example/ha-cluster/config.yml

@@ -22,6 +22,9 @@ migration_thread: false
 #use the clustered Neo4j GraphDatabase (org.neo4j.kernel.HighlyAvailableGraphDatabase)
 ha.db: true
 
+# If online backup should be available, if it is the Online JAR file will be loaded.
+online_backup_enabled: false
+
 # Example of HA Configuration, see http://wiki.neo4j.org/content/High_Availability_Cluster
 # This is only used when ha.db is set to true
 ha.machine_id: 1

example/ha-cluster/myapp.rb

@@ -11,6 +11,11 @@ def start(machine_id)
   Neo4j.config['ha.machine_id'] = machine_id
   Neo4j.config['ha.server'] = "localhost:600#{machine_id}"
   Neo4j.config['enable_remote_shell'] = "port=933#{machine_id}"
+
+  # since we are all running on localhost we can only enable one online back up server
+  # since they all use the port 6362
+  Neo4j.config[:online_backup_enabled] = true if machine_id == 1
+
   Neo4j.config[:storage_path] = "db/neo#{machine_id}"
   Neo4j.start
 end

lib/neo4j.rb

@@ -19,19 +19,32 @@
 
 module Neo4j
 
-   def self.load_local_jars
+  def self.load_local_jars
     # This is a temporary fix since the HA does not yet work with this JAR
     # It will be solved in a future version of the Java Neo4j library.
-    require 'neo4j/jars/core/neo4j-index-1.3-1.3.M01.jar'
+    if Neo4j.config[:online_backup_enabled]
+      Neo4j.load_online_backup
+    else
+      # backup and HA does not work with this JAR FILE
+      require 'neo4j/jars/core/neo4j-index-1.3-1.3.M01.jar'
+    end
   end
 
   def self.load_shell_jars
     require 'neo4j/jars/ha/neo4j-shell-1.3.M02.jar'
   end
-
+
+  def self.load_online_backup
+    require 'neo4j/jars/ha/neo4j-com-1.3.M02.jar'
+    require 'neo4j/jars/core/neo4j-backup-1.3-SNAPSHOT.jar'
+    require 'neo4j/jars/ha/netty-3.2.1.Final.jar'
+    Neo4j.send(:const_set, :OnlineBackup, org.neo4j.backup.OnlineBackup)
+  end
+
   def self.load_ha_jars
     require 'neo4j/jars/ha/log4j-1.2.16.jar'
     require 'neo4j/jars/ha/neo4j-ha-1.3.M02.jar'
+    require 'neo4j/jars/ha/neo4j-com-1.3.M02.jar'
     require 'neo4j/jars/ha/netty-3.2.1.Final.jar'
     require 'neo4j/jars/ha/org.apache.servicemix.bundles.jline-0.9.94_1.jar'
     require 'neo4j/jars/ha/org.apache.servicemix.bundles.lucene-3.0.1_2.jar'

lib/neo4j/database.rb

@@ -64,6 +64,7 @@ def start_local_graph_db #:nodoc:
     def start_ha_graph_db
       Neo4j.logger.info "starting Neo4j in HA mode, machine id: #{Neo4j.config['ha.machine_id']} at #{Neo4j.config['ha.server']} db #{@storage_path}"
       Neo4j.load_ha_jars # those jars are only needed for the HighlyAvailableGraphDatabase
+      Neo4j.load_online_backup if Neo4j.config[:online_backup_enabled]      
       @graph = org.neo4j.kernel.HighlyAvailableGraphDatabase.new(@storage_path, Neo4j.config.to_java_map)
       @graph.register_transaction_event_handler(@event_handler)
       @lucene = @graph.index #org.neo4j.index.impl.lucene.LuceneIndexProvider.new