Class: Ruote::HashStorage
- Inherits:
-
Object
- Object
- Ruote::HashStorage
- Includes:
- MonitorMixin, StorageBase
- Defined in:
- lib/ruote/storage/hash_storage.rb
Overview
An in-memory storage.
Useful for testing or for transient engines.
Instance Attribute Summary collapse
-
#h ⇒ Object
readonly
Returns the value of attribute h.
Instance Method Summary collapse
- #add_type(type) ⇒ Object
- #delete(doc) ⇒ Object
- #get(type, key) ⇒ Object
- #get_many(type, key = nil, opts = {}) ⇒ Object
-
#ids(type) ⇒ Object
Returns a sorted list of all the ids for a given type.
-
#initialize(options = {}) ⇒ HashStorage
constructor
A new instance of HashStorage.
-
#purge! ⇒ Object
Purges the storage completely.
- #purge_type!(type) ⇒ Object
- #put(doc, opts = {}) ⇒ Object
-
#shutdown ⇒ Object
Shuts this storage down.
Methods included from StorageBase
#clear, #context, #context=, #copy_to, #delete_schedule, #dump, #empty?, #expression_wfids, #find_expressions, #find_root_expression, #find_root_expressions, #get_configuration, #get_engine_variable, #get_msgs, #get_schedules, #get_trackers, #put_engine_variable, #put_msg, #put_schedule, #remove_process, #replace_engine_configuration, #reserve, #worker
Constructor Details
#initialize(options = {}) ⇒ HashStorage
Returns a new instance of HashStorage.
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# File 'lib/ruote/storage/hash_storage.rb', line 45 def initialize(={}) super() # since were including MonitorMixin, this super() is necessary @options = purge! # which initializes @h replace_engine_configuration() end |
Instance Attribute Details
#h ⇒ Object (readonly)
Returns the value of attribute h.
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# File 'lib/ruote/storage/hash_storage.rb', line 43 def h @h end |
Instance Method Details
#add_type(type) ⇒ Object
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# File 'lib/ruote/storage/hash_storage.rb', line 196 def add_type(type) @h[type] = {} end |
#delete(doc) ⇒ Object
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# File 'lib/ruote/storage/hash_storage.rb', line 102 def delete(doc) drev = doc['_rev'] raise ArgumentError.new("can't delete doc without _rev") unless drev synchronize do prev = get(doc['type'], doc['_id']) return true if prev.nil? doc['_rev'] ||= 0 return prev if prev['_rev'] != drev @h[doc['type']].delete(doc['_id']) nil # success end end |
#get(type, key) ⇒ Object
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# File 'lib/ruote/storage/hash_storage.rb', line 95 def get(type, key) synchronize do Ruote.fulldup(@h[type][key]) end end |
#get_many(type, key = nil, opts = {}) ⇒ Object
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# File 'lib/ruote/storage/hash_storage.rb', line 124 def get_many(type, key=nil, opts={}) # NOTE : no dup here for now synchronize do docs = if key keys = Array(key).map { |k| k.is_a?(String) ? "!#{k}" : k } @h[type].values.select { |doc| key_match?(type, keys, doc) } else @h[type].values end return docs.size if opts[:count] docs = docs.sort_by { |d| d['_id'] } docs = docs.reverse if opts[:descending] skip = opts[:skip] || 0 limit = opts[:limit] || docs.size docs[skip, limit] end end |
#ids(type) ⇒ Object
Returns a sorted list of all the ids for a given type.
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# File 'lib/ruote/storage/hash_storage.rb', line 151 def ids(type) @h[type].keys.sort end |
#purge! ⇒ Object
Purges the storage completely.
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# File 'lib/ruote/storage/hash_storage.rb', line 176 def purge! @h = %w[ variables msgs expressions errors schedules configurations workitems ].each_with_object({}) { |k, h| h[k] = {} } @h['configurations']['engine'] = @options end |
#purge_type!(type) ⇒ Object
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# File 'lib/ruote/storage/hash_storage.rb', line 201 def purge_type!(type) @h[type] = {} end |
#put(doc, opts = {}) ⇒ Object
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# File 'lib/ruote/storage/hash_storage.rb', line 58 def put(doc, opts={}) synchronize do pre = get(doc['type'], doc['_id']) if pre && pre['_rev'] != doc['_rev'] return pre end if pre.nil? && doc['_rev'] return true end doc = if opts[:update_rev] doc.merge!('_rev' => pre ? pre['_rev'] : -1) else doc.merge('_rev' => doc['_rev'] || -1) end doc['put_at'] = Ruote.now_to_utc_s doc['_rev'] = doc['_rev'] + 1 doc = Ruote.keys_to_s(doc) @h[doc['type']][doc['_id']] = Rufus::Json.dup(doc) nil end #rescue => e # puts "=" * 80 # File.open('doc.json', 'wb') do |f| # f.puts Rufus::Json.pretty_encode(doc) # end # raise e end |
#shutdown ⇒ Object
Shuts this storage down.
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# File 'lib/ruote/storage/hash_storage.rb', line 208 def shutdown # nothing to do end |