88 lines
2.4 KiB
Ruby
88 lines
2.4 KiB
Ruby
module CouchRest
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class Server
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attr_accessor :uri, :uuid_batch_count, :available_databases
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def initialize(server = 'http://127.0.0.1:5984', uuid_batch_count = 1000)
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@uri = server
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@uuid_batch_count = uuid_batch_count
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end
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# Lists all "available" databases.
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# An available database, is a database that was specified
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# as avaiable by your code.
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# It allows to define common databases to use and reuse in your code
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def available_databases
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@available_databases ||= {}
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end
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# Adds a new available database and create it unless it already exists
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#
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# Example:
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#
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# @couch = CouchRest::Server.new
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# @couch.define_available_database(:default, "tech-blog")
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#
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def define_available_database(reference, db_name, create_unless_exists = true)
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available_databases[reference.to_sym] = create_unless_exists ? database!(db_name) : database(db_name)
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end
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# Checks that a database is set as available
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#
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# Example:
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#
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# @couch.available_database?(:default)
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#
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def available_database?(ref_or_name)
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ref_or_name.is_a?(Symbol) ? available_databases.keys.include?(ref_or_name) : available_databases.values.map{|db| db.name}.include?(ref_or_name)
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end
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def default_database=(name, create_unless_exists = true)
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define_available_database(:default, name, create_unless_exists = true)
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end
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def default_database
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available_databases[:default]
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end
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# Lists all databases on the server
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def databases
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CouchRest.get "#{@uri}/_all_dbs"
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end
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# Returns a CouchRest::Database for the given name
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def database(name)
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CouchRest::Database.new(self, name)
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end
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# Creates the database if it doesn't exist
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def database!(name)
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create_db(name) rescue nil
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database(name)
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end
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# GET the welcome message
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def info
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CouchRest.get "#{@uri}/"
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end
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# Create a database
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def create_db(name)
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CouchRest.put "#{@uri}/#{name}"
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database(name)
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end
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# Restart the CouchDB instance
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def restart!
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CouchRest.post "#{@uri}/_restart"
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end
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# Retrive an unused UUID from CouchDB. Server instances manage caching a list of unused UUIDs.
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def next_uuid(count = @uuid_batch_count)
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@uuids ||= []
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if @uuids.empty?
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@uuids = CouchRest.get("#{@uri}/_uuids?count=#{count}")["uuids"]
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end
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@uuids.pop
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end
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end
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end
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