Class: JekyllImport::Importers::Mephisto

Inherits:
JekyllImport::Importer show all
Defined in:
lib/jekyll-import/importers/mephisto.rb

Constant Summary collapse

QUERY =

This query will pull blog posts from all entries across all blogs. If you’ve got unpublished, deleted or otherwise hidden posts please sift through the created posts to make sure nothing is accidently published.

"SELECT id, \
       permalink, \
       body, \
       published_at, \
       title \
FROM contents \
WHERE user_id = 1 AND \
      type = 'Article' AND \
      published_at IS NOT NULL \
ORDER BY published_at"

Class Method Summary collapse

Methods inherited from JekyllImport::Importer

inherited, run, stringify_keys, subclasses

Class Method Details

.postgres(c) ⇒ Object

Accepts a hash with database config variables, exports mephisto posts into a csv export PGPASSWORD if you must



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# File 'lib/jekyll-import/importers/mephisto.rb', line 8

def self.postgres(c)
  sql = <<~SQL
    BEGIN;
    CREATE TEMP TABLE jekyll AS
      SELECT title, permalink, body, published_at, filter FROM contents
      WHERE user_id = 1 AND type = 'Article' ORDER BY published_at;
    COPY jekyll TO STDOUT WITH CSV HEADER;
    ROLLBACK;
  SQL
  command = %(psql -h #{c[:host] || "127.0.0.1"} -c "#{sql.strip}" #{c[:database]} #{c[:username]} -o #{c[:filename] || "posts.csv"})
  Jekyll.logger.info "Executing:", command
  `#{command}`
  CSV.process
end

.process(options) ⇒ Object 



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# File 'lib/jekyll-import/importers/mephisto.rb', line 60

def self.process(options)
  dbname = options.fetch("dbname")
  user   = options.fetch("user")
  pass   = options.fetch("password", "")
  host   = options.fetch("host", "127.0.0.1")

  db = Sequel.mysql2(dbname, :user     => user,
                             :password => pass,
                             :host     => host,
                             :encoding => "utf8")

  FileUtils.mkdir_p "_posts"

  db[QUERY].each do |post|
    title = post[:title]
    slug = post[:permalink]
    date = post[:published_at]
    content = post[:body]

    # Ideally, this script would determine the post format (markdown,
    # html, etc) and create files with proper extensions. At this point
    # it just assumes that markdown will be acceptable.
    name = [date.year, date.month, date.day, slug].join("-") + ".markdown"

    data = {
      "layout" => "post",
      "title"  => title.to_s,
      "mt_id"  => post[:entry_id],
    }.delete_if { |_k, v| v.nil? || v == "" }.to_yaml

    File.open("_posts/#{name}", "w") do |f|
      f.puts data
      f.puts "---"
      f.puts content
    end
  end
end

.require_deps ⇒ Object 



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# File 'lib/jekyll-import/importers/mephisto.rb', line 29

def self.require_deps
  JekyllImport.require_with_fallback(%w(
    rubygems
    sequel
    mysql2
    csv
    fileutils
  ))
end

.specify_options(c) ⇒ Object 



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# File 'lib/jekyll-import/importers/mephisto.rb', line 39

def self.specify_options(c)
  c.option "dbname",   "--dbname DB",   "Database name"
  c.option "user",     "--user USER",   "Database user name"
  c.option "password", "--password PW", "Database user's password (default: '')"
  c.option "host",     "--host HOST",   "Database host name (default: 'localhost')"
end

.validate(options) ⇒ Object 



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# File 'lib/jekyll-import/importers/mephisto.rb', line 23

def self.validate(options)
  %w(dbname user).each do |option|
    abort "Missing mandatory option --#{option}." if options[option].nil?
  end
end