Class: ICFS::UsersRedis
Overview
Implement Users with a Redis cache
Constant Summary
Constants inherited from Users
Instance Method Summary collapse
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#flush(urg) ⇒ Boolean
Flush a user/role/group from a cache, if any.
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#initialize(redis, base, opts = {}) ⇒ UsersRedis
constructor
New instance.
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#read(urg) ⇒ Hash
Read a user/role/group.
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#write(obj) ⇒ Object
Write a user/role/group.
Constructor Details
#initialize(redis, base, opts = {}) ⇒ UsersRedis
New instance
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# File 'lib/icfs/users_redis.rb', line 31 def initialize(redis, base, opts={}) @redis = redis @base = base @pre = opts[:prefix] || ''.freeze @exp = opts[:expires] || 1*60*60 # 1 hour default @log = opts[:log] end |
Instance Method Details
#flush(urg) ⇒ Boolean
Flush a user/role/group from a cache, if any
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# File 'lib/icfs/users_redis.rb', line 52 def flush(urg) Items.validate(urg, 'User/role/group name'.freeze, Items::FieldUsergrp) @log.info('User/role/group cache flush: %s'.freeze % urg) if @log @redis.del(_key(urg)) return true end |
#read(urg) ⇒ Hash
Read a user/role/group
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# File 'lib/icfs/users_redis.rb', line 63 def read(urg) Items.validate(urg, 'User/role/group name'.freeze, Items::FieldUsergrp) key = _key(urg) @log.debug('User/role/group read: %s'.freeze % urg) if @log # try cache json = @redis.get(key) if json @log.debug('User/role/group cache hit: %s'.freeze % urg) if @log return JSON.parse(json) end # get base object from base store bse = @base.read(urg) if !bse @log.warn('User/role/group not found: %s'.freeze % urg) if @log return nil end # assemble seen = Set.new.add(urg) ary = [] roles = Set.new grps = Set.new perms = Set.new if bse['roles'] ary.concat bse['roles'] roles.merge bse['roles'] end if bse['groups'] ary.concat bse['groups'] grps.merge bse['groups'] end if bse['perms'] perms.merge bse['perms'] end # call ourself recursively for any un-expanded memberships while itm = ary.shift next if seen.include?(itm) seen.add(itm) ikey = _key(itm) # all included u/r/g have been seen & expanded mem = self.read(itm) next if !mem if mem['roles'] roles.merge mem['roles'] seen.merge mem['roles'] end if mem['groups'] grps.merge mem['groups'] seen.merge mem['groups'] end if mem['perms'] perms.merge mem['perms'] end end # final result bse['roles'] = roles.to_a unless roles.empty? bse['groups'] = grps.to_a unless grps.empty? bse['perms'] = perms.to_a unless perms.empty? json = JSON.generate(bse) # save to cache @redis.set(key, json) @redis.expire(key, @exp) @log.info('User/role/group cached: %s %s'.freeze % [urg, json]) if @log return bse end |
#write(obj) ⇒ Object
Write a user/role/group
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# File 'lib/icfs/users_redis.rb', line 139 def write(obj) json = Items.generate(obj, 'User/Role/Group'.freeze, Users::ValUser) key = _key(obj['name']) @log.info('User/role/group write: %s'.freeze % urg) if @log @redis.del(key) @base.write(obj) end |