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Geoffrey Grosenbach 2008-09-11 22:36:41 -07:00
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.gitignore vendored
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.DS_Store
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LICENSE Normal file
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README.markdown → README.rdoc
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## CouchRest - CouchDB, close to the metal
== CouchRest - CouchDB, close to the metal
CouchRest is based on [CouchDB's couch.js test library](http://svn.apache.org/repos/asf/incubator/couchdb/trunk/share/www/script/couch.js), which I find to be concise, clear, and well designed. CouchRest lightly wraps CouchDB's HTTP API, managing JSON serialization, and remembering the URI-paths to CouchDB's API endpoints so you don't have to.
CouchRest's lighweight is designed to make a simple base for application and framework-specific object oriented APIs.
### Easy Install
=== Easy Install
`sudo gem install jchris-couchrest -s http://gems.github.com`
sudo gem install jchris-couchrest -s http://gems.github.com
### Relax, it's RESTful
=== Relax, it's RESTful
The core of Couchrest is Heroku’s excellent REST Client Ruby HTTP wrapper. REST Client takes all the nastyness of Net::HTTP and gives is a pretty face, while still giving you more control than Open-URI. I recommend it anytime you’re interfacing with a well-defined web service.
### Running the Specs
=== Running the Specs
The most complete documentation is the spec/ directory. To validate your CouchRest install, from the project root directory run `rake`, or `autotest` (requires RSpec and optionally ZenTest for autotest support).
### Examples
=== Examples
Quick Start:

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Rakefile
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require 'rake'
require "rake/rdoctask"
require 'spec/rake/spectask'
desc "Run all specs"
@ -12,4 +13,14 @@ Spec::Rake::SpecTask.new(:doc) do |t|
t.spec_files = FileList['spec/*_spec.rb']
end
desc "Generate the rdoc"
Rake::RDocTask.new do |rdoc|
files = ["README.rdoc", "LICENSE", "lib/**/*.rb"]
rdoc.rdoc_files.add(files)
rdoc.main = "README.rdoc"
rdoc.title = "CouchRest: Ruby CouchDB, close to the metal"
# rdoc.rdoc_dir = "doc/rdoc"
# rdoc.options << "--line-numbers" << "--inline-source"
end
task :default => :spec

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CouchRest THANKS
=====================
CouchRest was originally developed by J. Chris Anderson <jchris@grabb.it>
and a number of other contributors. Many people further contributed to
CouchRest by reporting problems, suggesting various improvements or submitting
changes. A list of these people is included below.
* Greg Borenstein <http://ideasfordozens.com>
* Geoffrey Grosenbach <http://nubyonrails.com/>
* Simon Rozet <simon /at/ rozet /dot/ name>
Patches are welcome. The primary source for this software project is:
http://github.com/jchris/couchrest/tree/master

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couchrest.gemspec
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Gem::Specification.new do |s|
s.name = "couchrest"
s.version = "0.9.3"
s.date = "2008-09-10"
s.version = "0.9.4"
s.date = "2008-09-11"
s.summary = "Lean and RESTful interface to CouchDB."
s.email = "jchris@grabb.it"
s.homepage = "http://github.com/jchris/couchrest"

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lib/couch_rest.rb
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class CouchRest
attr_accessor :uri, :uuid_batch_count
def initialize server = 'http://localhost:5984', uuid_batch_count = 1000
@uri = server
@uuid_batch_count = uuid_batch_count
end
# ensure that a database exists
# creates it if it isn't already there
# returns it after it's been created
def self.database! url
uri = URI.parse url
path = uri.path
uri.path = ''
cr = CouchRest.new(uri.to_s)
cr.database!(path)
end
def self.database url
uri = URI.parse url
path = uri.path
uri.path = ''
cr = CouchRest.new(uri.to_s)
cr.database(path)
end
# list all databases on the server
def databases
CouchRest.get "#{@uri}/_all_dbs"
end
def database name
CouchRest::Database.new(self, name)
end
# creates the database if it doesn't exist
def database! name
create_db(path) rescue nil
database name
end
# get the welcome message
def info
CouchRest.get "#{@uri}/"
end
# create a database
def create_db name
CouchRest.put "#{@uri}/#{name}"
database name
end
# restart the couchdb instance
def restart!
CouchRest.post "#{@uri}/_restart"
end
def next_uuid count = @uuid_batch_count
@uuids ||= []
if @uuids.empty?
@uuids = CouchRest.post("#{@uri}/_uuids?count=#{count}")["uuids"]
end
@uuids.pop
end
class << self
def put uri, doc = nil
payload = doc.to_json if doc
JSON.parse(RestClient.put(uri, payload))
end
def get uri
JSON.parse(RestClient.get(uri), :max_nesting => false)
end
def post uri, doc = nil
payload = doc.to_json if doc
JSON.parse(RestClient.post(uri, payload))
end
def delete uri
JSON.parse(RestClient.delete(uri))
end
def paramify_url url, params = nil
if params
query = params.collect do |k,v|
v = v.to_json if %w{key startkey endkey}.include?(k.to_s)
"#{k}=#{CGI.escape(v.to_s)}"
end.join("&")
url = "#{url}?#{query}"
end
url
end
end
end

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lib/couch_rest/commands.rb
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require File.join(File.dirname(__FILE__), "..", "couchrest")
%w(push generate).each do |filename|
require File.join(File.dirname(__FILE__), "commands", filename)
end

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lib/couchrest.rb
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# Copyright 2008 J. Chris Anderson
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
require "rubygems"
require 'json'
require 'rest_client'
require File.dirname(__FILE__) + '/couch_rest'
require File.dirname(__FILE__) + '/database'
require File.dirname(__FILE__) + '/pager'
require File.dirname(__FILE__) + '/file_manager'
require File.dirname(__FILE__) + '/streamer'
$:.unshift File.dirname(__FILE__) unless
$:.include?(File.dirname(__FILE__)) ||
$:.include?(File.expand_path(File.dirname(__FILE__)))
require 'couchrest/monkeypatches'
# this has to come after the JSON gem
module CouchRest
autoload :Server, 'couchrest/core/server'
autoload :Database, 'couchrest/core/database'
autoload :Pager, 'couchrest/helper/pager'
autoload :FileManager, 'couchrest/helper/file_manager'
autoload :Streamer, 'couchrest/helper/streamer'
# The CouchRest module methods handle the basic JSON serialization
# and deserialization, as well as query parameters. The module also includes
# some helpers for tasks like instantiating a new Database or Server instance.
class << self
# this date format sorts lexicographically
# and is compatible with Javascript's new Date(time_string) constructor
# note that sorting will break if you store times from multiple timezones
# I like to add a ENV['TZ'] = 'UTC' to my apps
class Time
def to_json(options = nil)
%("#{strftime("%Y/%m/%d %H:%M:%S %z")}")
end
# this works to decode the outputted time format
# from ActiveSupport
# def self.parse string, fallback=nil
# d = DateTime.parse(string).new_offset
# self.utc(d.year, d.month, d.day, d.hour, d.min, d.sec)
# rescue
# fallback
# end
# todo, make this parse the url and instantiate a Server or Database instance
# depending on the specificity.
def new(*opts)
Server.new(*opts)
end
# ensure that a database exists
# creates it if it isn't already there
# returns it after it's been created
def database! url
uri = URI.parse url
path = uri.path
uri.path = ''
cr = CouchRest.new(uri.to_s)
cr.database!(path)
end
def database url
uri = URI.parse url
path = uri.path
uri.path = ''
cr = CouchRest.new(uri.to_s)
cr.database(path)
end
def put uri, doc = nil
payload = doc.to_json if doc
JSON.parse(RestClient.put(uri, payload))
end
def get uri
JSON.parse(RestClient.get(uri), :max_nesting => false)
end
def post uri, doc = nil
payload = doc.to_json if doc
JSON.parse(RestClient.post(uri, payload))
end
def delete uri
JSON.parse(RestClient.delete(uri))
end
def paramify_url url, params = nil
if params
query = params.collect do |k,v|
v = v.to_json if %w{key startkey endkey}.include?(k.to_s)
"#{k}=#{CGI.escape(v.to_s)}"
end.join("&")
url = "#{url}?#{query}"
end
url
end
end # class << self
end

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lib/couch_rest/commands/generate.rb → lib/couchrest/commands/generate.rb
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require 'fileutils'
class CouchRest
module CouchRest
module Commands
module Generate

2
lib/couch_rest/commands/push.rb → lib/couchrest/commands/push.rb
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class CouchRest
module CouchRest
module Commands

2
lib/database.rb → lib/couchrest/core/database.rb
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require 'cgi'
require "base64"
class CouchRest
module CouchRest
class Database
attr_reader :server, :host, :name, :root

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lib/couchrest/core/server.rb Normal file
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module CouchRest
class Server
attr_accessor :uri, :uuid_batch_count
def initialize server = 'http://localhost:5984', uuid_batch_count = 1000
@uri = server
@uuid_batch_count = uuid_batch_count
end
# list all databases on the server
def databases
CouchRest.get "#{@uri}/_all_dbs"
end
def database name
CouchRest::Database.new(self, name)
end
# creates the database if it doesn't exist
def database! name
create_db(name) rescue nil
database name
end
# get the welcome message
def info
CouchRest.get "#{@uri}/"
end
# create a database
def create_db name
CouchRest.put "#{@uri}/#{name}"
database name
end
# restart the couchdb instance
def restart!
CouchRest.post "#{@uri}/_restart"
end
def next_uuid count = @uuid_batch_count
@uuids ||= []
if @uuids.empty?
@uuids = CouchRest.post("#{@uri}/_uuids?count=#{count}")["uuids"]
end
@uuids.pop
end
end
end

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lib/file_manager.rb → lib/couchrest/helper/file_manager.rb
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require 'digest/md5'
class CouchRest
module CouchRest
class FileManager
attr_reader :db
attr_accessor :loud

2
lib/pager.rb → lib/couchrest/helper/pager.rb
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class CouchRest
module CouchRest
class Pager
attr_accessor :db
def initialize db

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lib/streamer.rb → lib/couchrest/helper/streamer.rb
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class CouchRest
module CouchRest
class Streamer
attr_accessor :db
def initialize db

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lib/couchrest/monkeypatches.rb Normal file
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# this file must be loaded after the JSON gem
class Time
# this date format sorts lexicographically
# and is compatible with Javascript's new Date(time_string) constructor
# note that sorting will break if you store times from multiple timezones
# I like to add a ENV['TZ'] = 'UTC' to my apps
def to_json(options = nil)
%("#{strftime("%Y/%m/%d %H:%M:%S %z")}")
end
# this works to decode the outputted time format
# copied from ActiveSupport
# def self.parse string, fallback=nil
# d = DateTime.parse(string).new_offset
# self.utc(d.year, d.month, d.day, d.hour, d.min, d.sec)
# rescue
# fallback
# end
end