Class: Downloader

Inherits:
Object show all
Defined in:
lib/jirametrics/downloader.rb

Constant Summary collapse

CURRENT_METADATA_VERSION = 
4

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(download_config:, file_system:, jira_gateway:) ⇒ Downloader

Returns a new instance of Downloader.



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# File 'lib/jirametrics/downloader.rb', line 15

def initialize download_config:, file_system:, jira_gateway:
  @metadata = {}
  @download_config = download_config
  @target_path = @download_config.project_config.target_path
  @file_system = file_system
  @jira_gateway = jira_gateway
  @board_id_to_filter_id = {}

  @issue_keys_downloaded_in_current_run = []
  @issue_keys_pending_download = []
end

Instance Attribute Details

#board_id_to_filter_id ⇒ Object (readonly)

For testing only



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# File 'lib/jirametrics/downloader.rb', line 13

def board_id_to_filter_id
  @board_id_to_filter_id
end

#file_system ⇒ Object (readonly)

Returns the value of attribute file_system.



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# File 'lib/jirametrics/downloader.rb', line 10

def file_system
  @file_system
end

#metadata ⇒ Object

Returns the value of attribute metadata.



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# File 'lib/jirametrics/downloader.rb', line 9

def metadata
  @metadata
end

#start_date_in_query ⇒ Object (readonly)

For testing only



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# File 'lib/jirametrics/downloader.rb', line 13

def start_date_in_query
  @start_date_in_query
end

Instance Method Details

#download_board_configuration(board_id:) ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 160

def download_board_configuration board_id:
  log "  Downloading board configuration for board #{board_id}", both: true
  json = @jira_gateway.call_url relative_url: "/rest/agile/1.0/board/#{board_id}/configuration"

  exit_if_call_failed json

  file_prefix = @download_config.project_config.file_prefix
  @file_system.save_json json: json, filename: "#{@target_path}#{file_prefix}_board_#{board_id}_configuration.json"

  # We have a reported bug that blew up on this line. Moved it after the save so we can
  # actually look at the returned json.
  @board_id_to_filter_id[board_id] = json['filter']['id'].to_i

  download_sprints board_id: board_id if json['type'] == 'scrum'
  Board.new raw: json
end

#download_issues(board:) ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 67

def download_issues board:
  log "  Downloading primary issues for board #{board.id}", both: true
  path = "#{@target_path}#{@download_config.project_config.file_prefix}_issues/"
  unless Dir.exist?(path)
    log "  Creating path #{path}"
    Dir.mkdir(path)
  end

  filter_id = @board_id_to_filter_id[board.id]
  jql = make_jql(filter_id: filter_id)
  jira_search_by_jql(jql: jql, initial_query: true, board: board, path: path)

  log "  Downloading linked issues for board #{board.id}", both: true
  loop do
    @issue_keys_pending_download.reject! { |key| @issue_keys_downloaded_in_current_run.include? key }
    break if @issue_keys_pending_download.empty?

    keys_to_request = @issue_keys_pending_download[0..99]
    @issue_keys_pending_download.reject! { |key| keys_to_request.include? key }
    jql = "key in (#{keys_to_request.join(', ')})"
    jira_search_by_jql(jql: jql, initial_query: false, board: board, path: path)
  end
end

#download_sprints(board_id:) ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 177

def download_sprints board_id:
  log "  Downloading sprints for board #{board_id}", both: true
  file_prefix = @download_config.project_config.file_prefix
  max_results = 100
  start_at = 0
  is_last = false

  while is_last == false
    json = @jira_gateway.call_url relative_url: "/rest/agile/1.0/board/#{board_id}/sprint?" \
      "maxResults=#{max_results}&startAt=#{start_at}"
    exit_if_call_failed json

    @file_system.save_json(
      json: json,
      filename: "#{@target_path}#{file_prefix}_board_#{board_id}_sprints_#{start_at}.json"
    )
    is_last = json['isLast']
    max_results = json['maxResults']
    if json['values']
      start_at += json['values'].size
    else
      log "  No sprints found for board #{board_id}"
    end
  end
end

#download_statuses ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 150

def download_statuses
  log '  Downloading all statuses', both: true
  json = @jira_gateway.call_url relative_url: '/rest/api/2/status'

  @file_system.save_json(
    json: json,
    filename: "#{@target_path}#{@download_config.project_config.file_prefix}_statuses.json"
  )
end

#exit_if_call_failed(json) ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 141

def exit_if_call_failed json
  # Sometimes Jira returns the singular form of errorMessage and sometimes the plural. Consistency FTW.
  return unless json['error'] || json['errorMessages'] || json['errorMessage']

  log "Download failed. See #{@file_system.logfile_name} for details.", both: true
  log "  #{JSON.pretty_generate(json)}"
  exit 1
end

#find_board_ids ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 60

def find_board_ids
  ids = @download_config.project_config.board_configs.collect(&:id)
  raise 'Board ids must be specified' if ids.empty?

  ids
end

#identify_other_issues_to_be_downloaded(raw_issue:, board:) ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 127

def identify_other_issues_to_be_downloaded raw_issue:, board:
  issue = Issue.new raw: raw_issue, board: board
  @issue_keys_downloaded_in_current_run << issue.key

  # Parent
  parent_key = issue.parent_key(project_config: @download_config.project_config)
  @issue_keys_pending_download << parent_key if parent_key

  # Sub-tasks
  issue.raw['fields']['subtasks']&.each do |raw_subtask|
    @issue_keys_pending_download << raw_subtask['key']
  end
end

#init_gateway ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 51

def init_gateway
  @jira_gateway.load_jira_config(@download_config.project_config.jira_config)
  @jira_gateway.ignore_ssl_errors = @download_config.project_config.settings['ignore_ssl_errors']
end

#jira_search_by_jql(jql:, initial_query:, board:, path:) ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 91

def jira_search_by_jql jql:, initial_query:, board:, path:
  intercept_jql = @download_config.project_config.settings['intercept_jql']
  jql = intercept_jql.call jql if intercept_jql

  log "  JQL: #{jql}"
  escaped_jql = CGI.escape jql

  max_results = 100
  start_at = 0
  total = 1
  while start_at < total
    json = @jira_gateway.call_url relative_url: '/rest/api/2/search' \
      "?jql=#{escaped_jql}&maxResults=#{max_results}&startAt=#{start_at}&expand=changelog&fields=*all"

    exit_if_call_failed json

    json['issues'].each do |issue_json|
      issue_json['exporter'] = {
        'in_initial_query' => initial_query
      }
      identify_other_issues_to_be_downloaded raw_issue: issue_json, board: board
      file = "#{issue_json['key']}-#{board.id}.json"

      @file_system.save_json(json: issue_json, filename: File.join(path, file))
    end

    total = json['total'].to_i
    max_results = json['maxResults']

    message = "    Downloaded #{start_at + 1}-#{[start_at + max_results, total].min} of #{total} issues to #{path} "
    log message, both: true

    start_at += json['issues'].size
  end
end

#load_metadata ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 207

def load_metadata
  # If we've never done a download before then this file won't be there. That's ok.
  hash = file_system.load_json(metadata_pathname, fail_on_error: false)
  return if hash.nil?

  # Only use the saved metadata if the version number is the same one that we're currently using.
  # If the cached data is in an older format then we're going to throw most of it away.
  @cached_data_format_is_current = (hash['version'] || 0) == CURRENT_METADATA_VERSION
  if @cached_data_format_is_current
    hash.each do |key, value|
      value = Date.parse(value) if value.is_a?(String) && value =~ /^\d{4}-\d{2}-\d{2}$/
      @metadata[key] = value
    end
  end

  # Even if this is the old format, we want to obey this one tag
  @metadata['no-download'] = hash['no-download'] if hash['no-download']
end

#log(text, both: false) ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 56

def log text, both: false
  @file_system.log text, also_write_to_stderr: both
end

#make_jql(filter_id:, today: Date.today) ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 267

def make_jql filter_id:, today: Date.today
  segments = []
  segments << "filter=#{filter_id}"

  start_date = @download_config.start_date today: today

  if start_date
    @download_date_range = start_date..today.to_date

    # For an incremental download, we want to query from the end of the previous one, not from the
    # beginning of the full range.
    @start_date_in_query = metadata['date_end'] || @download_date_range.begin
    log "    Incremental download only. Pulling from #{@start_date_in_query}", both: true if metadata['date_end']

    # Catch-all to pick up anything that's been around since before the range started but hasn't
    # had an update during the range.
    catch_all = '((status changed OR Sprint is not EMPTY) AND statusCategory != Done)'

    # Pick up any issues that had a status change in the range
    start_date_text = @start_date_in_query.strftime '%Y-%m-%d'
    # find_in_range = %((status changed DURING ("#{start_date_text} 00:00","#{end_date_text} 23:59")))
    find_in_range = %(updated >= "#{start_date_text} 00:00")

    segments << "(#{find_in_range} OR #{catch_all})"
  end

  segments.join ' AND '
end

#metadata_pathname ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 203

def metadata_pathname
  "#{@target_path}#{@download_config.project_config.file_prefix}_meta.json"
end

#remove_old_files ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 246

def remove_old_files
  file_prefix = @download_config.project_config.file_prefix
  Dir.foreach @target_path do |file|
    next unless file.match?(/^#{file_prefix}_\d+\.json$/)

    File.unlink "#{@target_path}#{file}"
  end

  return if @cached_data_format_is_current

  # Also throw away all the previously downloaded issues.
  path = File.join @target_path, "#{file_prefix}_issues"
  return unless File.exist? path

  Dir.foreach path do |file|
    next unless file.match?(/\.json$/)

    File.unlink File.join(path, file)
  end
end

#run ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 27

def run
  log '', both: true
  log @download_config.project_config.name, both: true

  init_gateway
  load_metadata

  if @metadata['no-download']
    log '  Skipping download. Found no-download in meta file', both: true
    return
  end

  # board_ids = @download_config.board_ids

  remove_old_files
  download_statuses
  find_board_ids.each do |id|
    board = download_board_configuration board_id: id
    download_issues board: board
  end

  save_metadata
end

#save_metadata ⇒ Object 



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# File 'lib/jirametrics/downloader.rb', line 226

def save_metadata
  @metadata['version'] = CURRENT_METADATA_VERSION
  @metadata['date_start_from_last_query'] = @start_date_in_query if @start_date_in_query

  if @download_date_range.nil?
    log "Making up a date range in meta since one wasn't specified. You'll want to change that.", both: true
    today = Date.today
    @download_date_range = (today - 7)..today
  end

  @metadata['earliest_date_start'] = @download_date_range.begin if @metadata['earliest_date_start'].nil?

  @metadata['date_start'] = @download_date_range.begin
  @metadata['date_end'] = @download_date_range.end

  @metadata['jira_url'] = @jira_url

  @file_system.save_json json: @metadata, filename: metadata_pathname
end