Class: EntitySnapshot::Postgres
- Inherits:
-
Object
- Object
- EntitySnapshot::Postgres
show all
- Includes:
- EntityCache::Store::External, Get, StreamName, Log::Dependency
- Defined in:
- lib/entity_snapshot/postgres/get.rb,
lib/entity_snapshot/postgres/log.rb,
lib/entity_snapshot/postgres/postgres.rb,
lib/entity_snapshot/postgres/read_only.rb,
lib/entity_snapshot/postgres/controls/id.rb,
lib/entity_snapshot/postgres/stream_name.rb,
lib/entity_snapshot/postgres/controls/time.rb,
lib/entity_snapshot/postgres/controls/batch.rb,
lib/entity_snapshot/postgres/controls/write.rb,
lib/entity_snapshot/postgres/controls/entity.rb,
lib/entity_snapshot/postgres/controls/message.rb,
lib/entity_snapshot/postgres/controls/version.rb,
lib/entity_snapshot/postgres/controls/snapshot.rb,
lib/entity_snapshot/postgres/controls/stream_name.rb,
lib/entity_snapshot/postgres/controls/entity_store.rb,
lib/entity_snapshot/postgres/controls/random_value.rb,
lib/entity_snapshot/postgres/controls/snapshot/put.rb,
lib/entity_snapshot/postgres/controls/snapshot/read_only.rb
Defined Under Namespace
Modules: Controls, Get, StreamName
Classes: Log, ReadOnly
Constant Summary
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- Error =
Class.new(RuntimeError)
Instance Attribute Summary collapse
Class Method Summary
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Instance Method Summary
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Methods included from StreamName
category, #snapshot_stream_name
Methods included from Get
#get, prepended
Instance Attribute Details
#session ⇒ Object
Returns the value of attribute session.
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# File 'lib/entity_snapshot/postgres/postgres.rb', line 13
def session
@session
end
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Class Method Details
.assure(store) ⇒ Object
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# File 'lib/entity_snapshot/postgres/postgres.rb', line 60
def self.assure(store)
if [store.snapshot_class, store.snapshot_interval].include?(nil)
raise EntityCache::Store::External::Error
end
end
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Instance Method Details
#category ⇒ Object
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# File 'lib/entity_snapshot/postgres/postgres.rb', line 17
def category
StreamName.category(subject)
end
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# File 'lib/entity_snapshot/postgres/postgres.rb', line 21
def configure(session: nil)
MessageStore::Postgres::Session.configure(self, session: session)
MessageStore::Postgres::Put.configure(self, session: self.session, attr_name: :write)
MessageStore::Postgres::Get::Stream::Last.configure(self, session: self.session, attr_name: :read)
end
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#put(id, entity, version, time) ⇒ Object
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# File 'lib/entity_snapshot/postgres/postgres.rb', line 27
def put(id, entity, version, time)
unless entity.is_a? subject
error_msg = "Persistent storage for #{subject} cannot store #{entity}"
logger.error() { error_msg }
raise Error, error_msg
end
stream_name = snapshot_stream_name(id)
logger.trace(tags: [:cache, :put]) { "Writing snapshot (Stream: #{stream_name.inspect}, Entity Class: #{entity.class.name}, Version: #{version.inspect}, Time: #{time.utc.iso8601(3)})" }
entity_data = Transform::Write.raw_data(entity)
event_data = MessageStore::MessageData::Write.new
iso8601_time = Clock::UTC.iso8601(time)
data = {
entity_data: entity_data,
entity_version: version,
time: iso8601_time
}
event_data.type = 'Recorded'
event_data.data = data
position = write.(event_data, stream_name)
logger.debug(tags: [:cache, :put]) { "Wrote snapshot (Stream: #{stream_name.inspect}, Entity Class: #{entity.class.name}, Version: #{version.inspect}, Time: #{time.utc.iso8601(3)})" }
position
end
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