Class: Vines::Services::CouchModels::Service

Inherits:
CouchRest::Model::Base
  • Object
show all
Extended by:
Storage::CouchDB::ClassMethods
Defined in:
lib/vines/services/storage/couchdb/service.rb

Constant Summary collapse

KEYS = 
%w[_id name code accounts users jid created_at updated_at].freeze
VIEW_ID = 
"_design/System".freeze
VIEW_NAME = 
"System/memberships".freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Storage::CouchDB::ClassMethods

build_from_database, to_s

Instance Attribute Details

#size ⇒ Object

Return the number of members in this service’s view. This is faster than calling Service#members#size because this reduces the view, so all members aren’t loaded from the database. The size is cached so subsequent calls to this method do not query the view.



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# File 'lib/vines/services/storage/couchdb/service.rb', line 97

def size
  unless @size
    rows = database.view(VIEW_NAME, reduce: true, key: [0, id])['rows'] rescue []
    @size = rows.first ? rows.first['value'] : 0
  end
  @size
end

Class Method Details

.find_all ⇒ Object 



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# File 'lib/vines/services/storage/couchdb/service.rb', line 133

def self.find_all
  sizes = find_sizes
  by_name.map do |doc|
    doc.size = sizes[doc.id] || 0
    doc
  end
end

.find_by_jid(jid) ⇒ Object 



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# File 'lib/vines/services/storage/couchdb/service.rb', line 125

def self.find_by_jid(jid)
  first_from_view('by_jid', jid.to_s.downcase)
end

.find_by_name(name) ⇒ Object 



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# File 'lib/vines/services/storage/couchdb/service.rb', line 121

def self.find_by_name(name)
  first_from_view('by_name', name)
end

.find_by_user(jid) ⇒ Object 



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# File 'lib/vines/services/storage/couchdb/service.rb', line 129

def self.find_by_user(jid)
  by_user.key(jid.to_s.downcase).to_a
end

.find_sizes ⇒ Object

Return a Hash of service ID to member count.



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# File 'lib/vines/services/storage/couchdb/service.rb', line 142

def self.find_sizes
  {}.tap do |hash|
    rows = database.view(VIEW_NAME, reduce: true, group: true, startkey: [0], endkey: [1])['rows'] rescue []
    rows.each do |row|
      hash[row['key'][1]] = row['value']
    end
  end
end

Instance Method Details

#add_user(jid) ⇒ Object

Allow the user, specified by their JID, to access the members of this service. Adds the JID to the list and ensures the list stays sorted and unique.



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# File 'lib/vines/services/storage/couchdb/service.rb', line 82

def add_user(jid)
  users << jid.to_s.downcase
  users.sort!
  users.uniq!
end

#members ⇒ Object

Query the members view and return an Array of Hashes like this: [‘www.wonderland.lit’, os: ‘linux’]. The members are cached so subsequent calls to this method do not query the view.



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# File 'lib/vines/services/storage/couchdb/service.rb', line 108

def members
  unless @members
    rows = database.view(VIEW_NAME, reduce: false, key: [0, id])['rows'] rescue []
    @members = rows.map {|row| row['value'] }
  end
  @members
end

#remove_user(jid) ⇒ Object

Remove this user’s permission to access this service.



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# File 'lib/vines/services/storage/couchdb/service.rb', line 89

def remove_user(jid)
  users.delete(jid.to_s.downcase)
end

#to_result ⇒ Object 



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# File 'lib/vines/services/storage/couchdb/service.rb', line 116

def to_result
  to_hash.clone.keep_if {|k, v| KEYS.include?(k) }
    .tap {|h| h['id'] = h.delete('_id') }
end

#user?(jid) ⇒ Boolean

Return true if this JID is allowed access to this service.

Returns:

  • (Boolean) 


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# File 'lib/vines/services/storage/couchdb/service.rb', line 75

def user?(jid)
  users.include?(jid.to_s.downcase)
end