class Taskinator::Persistence::RedisSerializationVisitor
Attributes
instance[R]
the redis connection is passed in since it is in the multi statement mode in order to produce one roundtrip to the redis server
Public Class Methods
new(conn, instance, base_visitor=self)
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# File lib/taskinator/persistence.rb, line 238 def initialize(conn, instance, base_visitor=self) @conn = conn @instance = instance @key = instance.key @root = base_visitor.instance @base_visitor = base_visitor @task_count = 0 end
Public Instance Methods
incr_task_count()
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# File lib/taskinator/persistence.rb, line 333 def incr_task_count @task_count += 1 end
task_count()
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# File lib/taskinator/persistence.rb, line 329 def task_count @task_count end
visit()
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the starting point for serializing the instance
# File lib/taskinator/persistence.rb, line 248 def visit @hmset = [] @hmset << @key @hmset += [:type, @instance.class.name] @instance.accept(self) # add the process uuid and root key, for easy access later! @hmset += [:process_uuid, @root.uuid] # add the default state @hmset += [:state, :initial] # NB: splat args @conn.hmset(*@hmset) self end
visit_args(attribute)
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# File lib/taskinator/persistence.rb, line 317 def visit_args(attribute) values = @instance.send(attribute) yaml = Taskinator::Persistence.serialize(values) # greater than 2 MB? if (yaml.bytesize / (1024.0**2)) > 2 Taskinator.logger.warn("Large argument data detected for '#{self.to_s}'. Consider using intrinsic types instead, or try to reduce the amount of data provided.") end @hmset += [attribute, yaml] end
visit_attribute(attribute)
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# File lib/taskinator/persistence.rb, line 289 def visit_attribute(attribute) value = @instance.send(attribute) @hmset += [attribute, value] if value end
visit_attribute_enum(attribute, type)
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# File lib/taskinator/persistence.rb, line 298 def visit_attribute_enum(attribute, type) visit_attribute(attribute) end
visit_attribute_time(attribute)
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# File lib/taskinator/persistence.rb, line 294 def visit_attribute_time(attribute) visit_attribute(attribute) end
visit_process(attribute)
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# File lib/taskinator/persistence.rb, line 268 def visit_process(attribute) process = @instance.send(attribute) if process @hmset += [attribute, process.uuid] RedisSerializationVisitor.new(@conn, process, @base_visitor).visit end end
visit_process_reference(attribute)
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# File lib/taskinator/persistence.rb, line 302 def visit_process_reference(attribute) process = @instance.send(attribute) @hmset += [attribute, process.uuid] if process end
visit_task_reference(attribute)
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# File lib/taskinator/persistence.rb, line 307 def visit_task_reference(attribute) task = @instance.send(attribute) @hmset += [attribute, task.uuid] if task end
visit_tasks(tasks)
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# File lib/taskinator/persistence.rb, line 276 def visit_tasks(tasks) tasks.each do |task| RedisSerializationVisitor.new(@conn, task, @base_visitor).visit @conn.rpush "#{@key}:tasks", task.uuid unless task.is_a?(Task::SubProcess) incr_task_count unless self == @base_visitor @base_visitor.incr_task_count end end @conn.set("#{@key}.count", tasks.count) @conn.set("#{@key}.pending", tasks.count) end
visit_type(attribute)
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# File lib/taskinator/persistence.rb, line 312 def visit_type(attribute) type = @instance.send(attribute) @hmset += [attribute, type.name] if type end