couchrest_model/bin/couchcontrol
2008-08-03 12:51:17 -07:00

167 lines
4.8 KiB
Ruby
Executable file

#!/usr/bin/env ruby
commands = %w{pull push}
command = ARGV[0]
if !commands.include?(command)
puts <<-USAGE
Usage: script/views (pull|push) my-database-name
For help on pull and push run script/views (pull|push) without a database name.
USAGE
exit
end
if ARGV.length == 1
case command
when "pull"
puts <<-PULL
script/views pull my-database-name [id prefix (default is _design)]
I will automagically create a "views" directory in your current working directory if none exists.
Then I copy the design documents and views into a directory structure like:
./views/my-design-doc/view-name-map.js
./views/my-design-doc/view-name-reduce.js
If your view names don't end in "map" or "reduce" I'll add those suffixes as a pull. On push I'll put them in new locations corresponding to these new names (overwriting the old design documents). I'm opinionated, but if these conventions don't work for you, the source code is right here.
PULL
when "push"
puts <<-PUSH
script/views push my-database-name
I'll push all the files in your views directory to the specified database. Because CouchDB caches the results of view calculation by function content, there's no performance penalty for duplicating the map function twice, which I'll do if you have a reduce function. This makes it possible to browse the results of just the map, which can be useful for both queries and debugging.
./views/my-design-doc/view-name-map.js
./views/my-design-doc/view-name-reduce.js
Pushed to =>
http://localhost:5984/my-database-name/_design/my-design-doc
{
"views" : {
"view-name-map" : {
"map" : "### contents of view-name-map.js ###"
},
"view-name-reduce" : {
"map" : "### contents of view-name-map.js ###",
"reduce" : "### contents of view-name-reduce.js ###"
},
}
}
PUSH
end
exit
end
dbname = ARGV[1]
dirname = ARGV[2] || "views"
prefix = ARGV[3] || "_design"
puts "Running #{command} into #{prefix} on #{dbname} from directory #{dirname}."
# __END__
require File.expand_path(File.dirname(__FILE__)) + '/../couchrest'
require 'fileutils'
module Enumerable
def group_by
inject({}) do |groups, element|
(groups[yield(element)] ||= []) << element
groups
end
end if RUBY_VERSION < '1.9'
end
# connect to couchdb
cr = CouchRest.new("http://localhost:5984")
db = cr.database(dbname)
def readfile(file, libs=nil)
st = open(file).read
end
case command
when "push" # files to views
views = {}
viewfiles = Dir.glob(File.join(dirname,"**","*.*")) # todo support non-js views
libfiles = viewfiles.select{|f|/lib\.\w+/.match(f)}
libs = open(libfiles[0]).read if libfiles[0]
all = (viewfiles-libfiles).collect do |file|
fileparts = file.split('/')
filename = fileparts[0]
puts filename
controller = fileparts[1]
action = fileparts[2].sub(/\.\w+/,'')
path = file
[controller,action,path]
end
# puts all.inspect
# end
# __END__
controllers = all.group_by{|f|f[0]}
controllers.each do |cntrl,parts|
# puts "replace _design/#{design}? (enter to proceed, 'n' to skip)"
# rep = $stdin.gets.chomp
# next if rep == 'n'
actions = {}
parts.group_by{|p|p[1]}.each do |action,fs|
fs.each do |f|
# actions[action] ||= {}
actions[action] = readfile(f.last)
end
end
# save them to the db
begin
control = db.get("#{prefix}/#{cntrl}")
rescue RestClient::Request::RequestFailed
control = nil
end
if (control && control['actions'] == actions)
puts "no change to #{prefix}/#{cntrl}. skipping..."
else
puts "replacing #{prefix}/#{cntrl}"
db.delete(control) rescue nil
db.save({
"_id" => "#{prefix}/#{cntrl}",
:actions => actions
})
end
end
when "pull" # views to files
ds = db.documents(:startkey => '#{prefix}/', :endkey => '#{prefix}/ZZZZZZZZZ')
ds['rows'].collect{|r|r['id']}.each do |id|
puts directory = id.split('/').last
FileUtils.mkdir_p(File.join("views",directory))
views = db.get(id)['views']
vgroups = views.keys.group_by{|k|k.sub(/\-(map|reduce)$/,'')}
vgroups.each do|g,vs|
mapname = vs.find {|v|views[v]["map"]}
if mapname
# save map
mapfunc = views[mapname]["map"]
mapfile = File.join(dirname,directory,"#{g}-map.js") # todo support non-js views
File.open(mapfile,'w') do |f|
f.write mapfunc
end
end
reducename = vs.find {|v|views[v]["reduce"]}
if reducename
# save reduce
reducefunc = views[reducename]["reduce"]
reducefile = File.join(dirname,directory,"#{g}-reduce.js") # todo support non-js views
File.open(reducefile,'w') do |f|
f.write reducefunc
end
end
end
end
end