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Versions: 25
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Contents
module Startback
#
# An Event occuring a given context and having a type and attached data.
#
# Event instances have String types that are by default unrelated to ruby
# classes. Also, this Event class has a `json` information contract that
# allows dumping & reloading them easily. A context or context_factory may
# be provided in dress world to reload the event context from data, but
# that logic is opaque to this class.
#
# This class is intended to be subclassed if a more specific event protocol
# is wanted.
#
class Event
def initialize(type, data, context = nil)
@type = type.to_s
@data = OpenStruct.new(data)
@context = context
end
attr_reader :context, :type, :data
def self.json(src, world = {})
parsed = JSON.parse(src)
context = if world[:context]
world[:context]
elsif world[:context_factory]
world[:context_factory].call(parsed)
end
Event.new(parsed['type'], parsed['data'], context)
end
def to_json(*args, &bl)
h = {
type: self.type,
data: data.to_h
}
h[:context] = context if context
h.to_json(*args, &bl)
end
end # class Event
end # module Startback
Version data entries
25 entries across 25 versions & 1 rubygems