Class: GitParser

Inherits:
Object
  • Object
show all
Defined in:
lib/git_parser.rb

Overview

Shells out to git in the working tree to gather repo info (latest
commit on the static-pages paths, file last-changed timestamps,
etc.) so the public website can show "last updated" timestamps and
the CRM can surface deployment metadata. Restricted to the paths
listed in STATIC_PAGES_PATH.

Constant Summary collapse

STATIC_PAGES_PATH =

Filesystem/URL path for static pages.

['app/views/pages',
'app/views/layouts/cms_homepage.html.erb',
'client/js/www',
'client/stylesheets/www',
'client/js/common',
'app/controllers/pages_controller.rb'].freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ GitParser

Returns a new instance of GitParser.



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# File 'lib/git_parser.rb', line 48

def initialize(options = {})
  @options = options
  @options[:logger] ||= ActiveSupport::Logger.new(STDOUT)
end

Class Method Details

.get_repo_info(options = {}) ⇒ Object 



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# File 'lib/git_parser.rb', line 20

def self.get_repo_info(options = {})
  gp = new(options)
  git_info_results = gp.find_git_info(STATIC_PAGES_PATH)

  {
    page_repo_last_modified: git_info_results[:last_modified],
    etag_version_id: git_info_results[:commit_sha]
  }
end

.write_repo_info_flags ⇒ Object

Write files locally with repo information for static pages
Simulating the web_cache.rake capistrano formula



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# File 'lib/git_parser.rb', line 32

def self.write_repo_info_flags
  git_info_results = get_repo_info

  Rails.root.join('page_last_modified.txt').open('w') do |f|
    f.write git_info_results[:page_repo_last_modified]
    f.flush
    f.fsync
  end

  Rails.root.join('etag_version_id.txt').open('wb') do |file|
    file.write(git_info_results[:etag_version_id])
    file.flush
    file.fsync
  end
end

Instance Method Details

#find_git_info(*paths) ⇒ Object

load 'lib/git_parser.rb';GitParser.get_repo_info



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# File 'lib/git_parser.rb', line 66

def find_git_info(*paths)
  git_info = {}
  paths.flatten.map do |path|
    res = get_git_log(path).presence
    # logger.info "[find_git_info] result: [#{res}] (#{res.class.name})"
    if res
      date_raw = begin
        res.match(/\bDate:(.+)\b/)[1].squish
      rescue StandardError
        nil
      end
      commit_sha = begin
        res.match(/\bcommit(.+)\b/)[1].squish
      rescue StandardError
        nil
      end
      timestamp = Time.current # Fallback default
      if date_raw
        # logger.debug "date_raw: #{date_raw} #{date_raw.inspect}, #{date_raw.class.name}"
        # logger.debug "Time: #{Time} #{Time.inspect}, #{Time.public_methods}"
        timestamp = Time.zone.parse(date_raw)
        # logger.info " ** Repo Timestamp detected as #{timestamp}"
      end
      if git_info[:last_modified].nil? || (git_info[:last_modified] < timestamp)
        git_info[:last_modified] = timestamp
        git_info[:commit_sha] = commit_sha
      end
    else
      logger.error " *GitParser could not find or execute #{path}"
    end
  end
  # return the last modification date and commit sha
  logger.info "Git Info for #{paths.inspect} -> #{git_info.inspect}"
  git_info
end

#get_git_log(path) ⇒ Object 



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# File 'lib/git_parser.rb', line 57

def get_git_log(path)
  `git log -1 --follow #{path}`
rescue StandardError
  nil

  # logger.info "Last git commit on #{path}: #{res}"
end

#logger ⇒ Object 



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# File 'lib/git_parser.rb', line 53

def logger
  @options[:logger]
end