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

Instance Method Summary collapse

Constructor Details

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

Returns a new instance of FileManager.



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# 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.



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

def db
  @db
end

#loud ⇒ Object

Returns the value of attribute loud.



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

def loud
  @loud
end

Instance Method Details

#pull_views(view_dir) ⇒ Object 



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# File 'lib/couchrest/helper/file_manager.rb', line 154

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_directory(push_dir, docid = nil) ⇒ Object 



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# 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

  # 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 



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# File 'lib/couchrest/helper/file_manager.rb', line 98

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