Class: CouchRest::FileManager

Inherits:
Object
  • Object
show all
Defined in:
lib/couchrest/helper/file_manager.rb

Constant Summary collapse

LANGS = 
{"rb" => "ruby", "js" => "javascript"}
MIMES = 
{
  "html"  => "text/html",
  "htm"   => "text/html",
  "png"   => "image/png",
  "css"   => "text/css",
  "js"    => "test/javascript"
}

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dbname, host = "http://localhost:5984") ⇒ FileManager

Returns a new instance of FileManager.



16
17
18
 
# File 'lib/couchrest/helper/file_manager.rb', line 16

def initialize(dbname, host="http://localhost:5984")
  @db = CouchRest.new(host).database(dbname)
end

Instance Attribute Details

#db ⇒ Object (readonly)

Returns the value of attribute db.



5
6
7
 
# File 'lib/couchrest/helper/file_manager.rb', line 5

def db
  @db
end

#loud ⇒ Object

Returns the value of attribute loud.



6
7
8
 
# File 'lib/couchrest/helper/file_manager.rb', line 6

def loud
  @loud
end

Class Method Details

.generate_app(app_dir) ⇒ Object

Generate an application in the given directory. This is a class method because it doesn’t depend on specifying a database.



208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
 
# File 'lib/couchrest/helper/file_manager.rb', line 208

def self.generate_app(app_dir)
  FileUtils.mkdir_p(app_dir)
  FileUtils.mkdir_p(File.join(app_dir,"attachments"))      
  FileUtils.mkdir_p(File.join(app_dir,"views"))
  
  index_template = File.join(File.expand_path(File.dirname(__FILE__)), 'templates','index.html')
  index_dest = File.join(app_dir,"attachments","index.html")
  FileUtils.cp(index_template, index_dest)
  
  map_template = File.join(File.expand_path(File.dirname(__FILE__)), 'templates','example-map.js')
  map_dest = File.join(app_dir,"views","example-map.js")
  FileUtils.cp(map_template, map_dest)
  
  rereduce_template = File.join(File.expand_path(File.dirname(__FILE__)), 'templates','example-reduce.js')
  rereduce_dest = File.join(app_dir,"views","example-reduce.js")
  FileUtils.cp(rereduce_template, rereduce_dest)
end

Instance Method Details

#pull_views(view_dir) ⇒ Object 



155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
 
# File 'lib/couchrest/helper/file_manager.rb', line 155

def pull_views(view_dir)
  prefix = "_design"
  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(view_dir,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(view_dir, 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(view_dir, directory, "#{g}-reduce.js") # todo support non-js views
        File.open(reducefile,'w') do |f|
          f.write reducefunc
        end
      end
    end
  end  
  
end

#push_app(appdir, appname) ⇒ Object 



189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
 
# File 'lib/couchrest/helper/file_manager.rb', line 189

def push_app(appdir, appname)
  libs = []
  viewdir = File.join(appdir,"views")
  attachdir = File.join(appdir,"attachments")
  views, lang = read_design_views(viewdir)
  # attachments = read_attachments(attachdir)
  docid = "_design/#{appname}"
  design = @db.get(docid) rescue {}
  design['_id'] = docid
  design['views'] = views
  design['language'] = lang
  @db.save(design)
  push_directory(attachdir, docid)
  # puts views.inspect
end

#push_directory(push_dir, docid = nil) ⇒ Object 



20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
 
# File 'lib/couchrest/helper/file_manager.rb', line 20

def push_directory(push_dir, docid=nil)
  docid ||= push_dir.split('/').reverse.find{|part|!part.empty?}

  pushfiles = Dir["#{push_dir}/**/*.*"].collect do |f|
    {f.split("#{push_dir}/").last => open(f).read}
  end

  return if pushfiles.empty?

  @attachments = {}
  @signatures = {}
  pushfiles.each do |file|
    name = file.keys.first
    value = file.values.first
    @signatures[name] = md5(value)

    @attachments[name] = {
      "data" => value,
      "content_type" => MIMES[name.split('.').last]
    }
  end

  doc = @db.get(docid) rescue nil

  unless doc
    say "creating #{docid}"
    @db.save({"_id" => docid, "_attachments" => @attachments, "signatures" => @signatures})
    return
  end

  doc["signatures"] ||= {}
  doc["_attachments"] ||= {}
  # remove deleted docs
  to_be_removed = doc["signatures"].keys.select do |d| 
    !pushfiles.collect{|p| p.keys.first}.include?(d) 
  end 

  to_be_removed.each do |p|
    say "deleting #{p}"
    doc["signatures"].delete(p)
    doc["_attachments"].delete(p)
  end

  # update existing docs:
  doc["signatures"].each do |path, sig|
    if (@signatures[path] == sig)
      say "no change to #{path}. skipping..."
    else
      say "replacing #{path}"
      doc["signatures"][path] = md5(@attachments[path]["data"])
      doc["_attachments"][path].delete("stub")
      doc["_attachments"][path].delete("length")    
      doc["_attachments"][path]["data"] = @attachments[path]["data"]
      doc["_attachments"][path].merge!({"data" => @attachments[path]["data"]} )
    end
  end

  # add in new files
  new_files = pushfiles.select{|d| !doc["signatures"].keys.include?( d.keys.first) } 

  new_files.each do |f|
    say "creating #{f}"
    path = f.keys.first
    content = f.values.first
    doc["signatures"][path] = md5(content)

    doc["_attachments"][path] = {
      "data" => content,
      "content_type" => MIMES[path.split('.').last]
    }
  end

  begin
    @db.save(doc)
  rescue Exception => e
    say e.message
  end
end

#push_views(view_dir) ⇒ Object 



99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
 
# File 'lib/couchrest/helper/file_manager.rb', line 99

def push_views(view_dir)
  designs = {}

  Dir["#{view_dir}/**/*.*"].each do |design_doc|
    design_doc_parts = design_doc.split('/')
    next if /^lib\..*$/.match design_doc_parts.last
    pre_normalized_view_name = design_doc_parts.last.split("-")
    view_name = pre_normalized_view_name[0..pre_normalized_view_name.length-2].join("-")

    folder = design_doc_parts[-2]

    designs[folder] ||= {}
    designs[folder]["views"] ||= {}
    design_lang = design_doc_parts.last.split(".").last
    designs[folder]["language"] ||= LANGS[design_lang]

    libs = ""
    Dir["#{view_dir}/lib.#{design_lang}"].collect do |global_lib|
      libs << open(global_lib).read
      libs << "\n"
    end
    Dir["#{view_dir}/#{folder}/lib.#{design_lang}"].collect do |global_lib|
      libs << open(global_lib).read
      libs << "\n"
    end
    if design_doc_parts.last =~ /-map/
      designs[folder]["views"]["#{view_name}-map"] ||= {}

      designs[folder]["views"]["#{view_name}-map"]["map"] = read(design_doc, libs)

      designs[folder]["views"]["#{view_name}-reduce"] ||= {}
      designs[folder]["views"]["#{view_name}-reduce"]["map"] = read(design_doc, libs)
    end

    if design_doc_parts.last =~ /-reduce/
      designs[folder]["views"]["#{view_name}-reduce"] ||= {}

      designs[folder]["views"]["#{view_name}-reduce"]["reduce"] = read(design_doc, libs)
    end
  end

  # cleanup empty maps and reduces
  designs.each do |name, props|
    props["views"].each do |view, funcs|
      next unless view.include?("reduce")
      props["views"].delete(view) unless funcs.keys.include?("reduce")
    end
  end
  
  designs.each do |k,v|
    create_or_update("_design/#{k}", v)
  end
  
  designs
end