Class: Taskinator::Persistence::RedisSerializationVisitor
- Inherits:
-
Visitor::Base
- Object
- Visitor::Base
- Taskinator::Persistence::RedisSerializationVisitor
- Defined in:
- lib/taskinator/persistence.rb
Instance Attribute Summary collapse
-
#instance ⇒ Object
readonly
the redis connection is passed in since it is in the multi statement mode in order to produce one roundtrip to the redis server.
Instance Method Summary collapse
- #incr_task_count ⇒ Object
-
#initialize(conn, instance, base_visitor = self) ⇒ RedisSerializationVisitor
constructor
A new instance of RedisSerializationVisitor.
- #task_count ⇒ Object
-
#visit ⇒ Object
the starting point for serializing the instance.
- #visit_args(attribute) ⇒ Object
- #visit_attribute(attribute) ⇒ Object
- #visit_attribute_enum(attribute, type) ⇒ Object
- #visit_attribute_time(attribute) ⇒ Object
- #visit_process(attribute) ⇒ Object
- #visit_process_reference(attribute) ⇒ Object
- #visit_task_reference(attribute) ⇒ Object
- #visit_tasks(tasks) ⇒ Object
- #visit_type(attribute) ⇒ Object
Constructor Details
#initialize(conn, instance, base_visitor = self) ⇒ RedisSerializationVisitor
Returns a new instance of RedisSerializationVisitor.
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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 |
Instance Attribute Details
#instance ⇒ Object (readonly)
the redis connection is passed in since it is in the multi statement mode in order to produce one roundtrip to the redis server
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# File 'lib/taskinator/persistence.rb', line 236 def instance @instance end |
Instance Method Details
#incr_task_count ⇒ Object
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# File 'lib/taskinator/persistence.rb', line 333 def incr_task_count @task_count += 1 end |
#task_count ⇒ Object
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# File 'lib/taskinator/persistence.rb', line 329 def task_count @task_count end |
#visit ⇒ Object
the starting point for serializing the instance
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# 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) ⇒ Object
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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) ⇒ Object
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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) ⇒ Object
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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) ⇒ Object
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# File 'lib/taskinator/persistence.rb', line 294 def visit_attribute_time(attribute) visit_attribute(attribute) end |
#visit_process(attribute) ⇒ Object
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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) ⇒ Object
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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) ⇒ Object
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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) ⇒ Object
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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) ⇒ Object
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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 |