9dbcf7a4-1c56-4510-9614-74ad5a22cff6

Committed 31 Jul 2024 02:46PM UTC coverage: 1.08% (-95.1%) from 96.17%

Build # 9dbcf7a4-1c56-4510-9614-74ad5a22cff6

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push

circleci

Committed by

jrgriffiniii

Commit Message

wip

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/app/models/upload_snapshot.rb

# frozen_string_literal: true
class UploadSnapshot < ApplicationRecord
  belongs_to :work
  attr_writer :upload

  alias_attribute :existing_files, :files

  def snapshot_deletions(work_changes, s3_filenames)
    existing_files.each do |file|
      filename = file["filename"]
      unless s3_filenames.include?(filename)
        work_changes << { action: "removed", filename:, checksum: file["checksum"] }
      end
    end
  end

  def snapshot_modifications(work_changes, s3_files)
    # check for modifications
    s3_files.each do |s3_file|
      next if match?(s3_file)
      work_changes << if include?(s3_file)
                        { action: "replaced", filename: s3_file.filename, checksum: s3_file.checksum }
                      else
                        { action: "added", filename: s3_file.filename, checksum: s3_file.checksum }
                      end
    end
  end

  def upload
    @upload ||= uploads.find { |s3_file| filenames.include?(s3_file.filename) }
  end

  def uri
    URI.parse(url)
  end

  def filenames
    files.map { |file| file["filename"] }
  end

  def include?(s3_file)
    filenames.include?(s3_file.filename)
  end

  def index(s3_file)
    files.index { |file| file["filename"] == s3_file.filename && checksum_compare(file["checksum"], s3_file.checksum) }
  end

  def match?(s3_file)
    index(s3_file).present?
  end

  def store_files(s3_files)
    self.files = s3_files.map { |file| { "filename" => file.filename, "checksum" => file.checksum } }
  end

  def self.find_by_filename(work_id:, filename:)
    find_by("work_id = ? AND files @> ?", work_id, JSON.dump([{ filename: }]))
  end

  private

    def uploads
      work.uploads
    end

    # Compares two checksums. Accounts for the case in which one of them is
    # a plain MD5 value and the other has been encoded with base64.
    # See also
    #   https://ruby-doc.org/core-2.7.0/Array.html#method-i-pack
    #   https://ruby-doc.org/core-2.7.0/String.html#method-i-unpack
    def checksum_compare(checksum1, checksum2)
      if checksum1 == checksum2
        true
      elsif checksum1.nil? || checksum2.nil?
        false
      elsif checksum1.length < checksum2.length
        # Decode the first one and then compare
        checksum1.unpack("m0").first.unpack("H*").first == checksum2
      else
        # Decode the second one and then compare
        checksum1 == checksum2.unpack("m0").first.unpack("H*").first
      end
    rescue ArgumentError
      # One of the values was not properly encoded
      false
    end
end

1	# frozen_string_literal: true
2	class UploadSnapshot < ApplicationRecord	×
3	belongs_to :work	×
4	attr_writer :upload	×
5
6	alias_attribute :existing_files, :files	×
7
8	def snapshot_deletions(work_changes, s3_filenames)	×
9	existing_files.each do \|file\|	×
10	filename = file["filename"]	×
11	unless s3_filenames.include?(filename)	×
12	work_changes << { action: "removed", filename:, checksum: file["checksum"] }	×
13	end	×
14	end	×
15	end	×
16
17	def snapshot_modifications(work_changes, s3_files)	×
18	# check for modifications
19	s3_files.each do \|s3_file\|	×
20	next if match?(s3_file)	×
21	work_changes << if include?(s3_file)	×
22	{ action: "replaced", filename: s3_file.filename, checksum: s3_file.checksum }	×
23	else	×
24	{ action: "added", filename: s3_file.filename, checksum: s3_file.checksum }	×
25	end	×
26	end	×
27	end	×
28
29	def upload	×
30	@upload \|\|= uploads.find { \|s3_file\| filenames.include?(s3_file.filename) }	×
31	end	×
32
33	def uri	×
34	URI.parse(url)	×
35	end	×
36
37	def filenames	×
38	files.map { \|file\| file["filename"] }	×
39	end	×
40
41	def include?(s3_file)	×
42	filenames.include?(s3_file.filename)	×
43	end	×
44
45	def index(s3_file)	×
46	files.index { \|file\| file["filename"] == s3_file.filename && checksum_compare(file["checksum"], s3_file.checksum) }	×
47	end	×
48
49	def match?(s3_file)	×
50	index(s3_file).present?	×
51	end	×
52
53	def store_files(s3_files)	×
54	self.files = s3_files.map { \|file\| { "filename" => file.filename, "checksum" => file.checksum } }	×
55	end	×
56
57	def self.find_by_filename(work_id:, filename:)	×
58	find_by("work_id = ? AND files @> ?", work_id, JSON.dump([{ filename: }]))	×
59	end	×
60
61	private	×
62
63	def uploads	×
64	work.uploads	×
65	end	×
66
67	# Compares two checksums. Accounts for the case in which one of them is
68	# a plain MD5 value and the other has been encoded with base64.
69	# See also
70	# https://ruby-doc.org/core-2.7.0/Array.html#method-i-pack
71	# https://ruby-doc.org/core-2.7.0/String.html#method-i-unpack
72	def checksum_compare(checksum1, checksum2)	×
73	if checksum1 == checksum2	×
74	true	×
75	elsif checksum1.nil? \|\| checksum2.nil?	×
76	false	×
77	elsif checksum1.length < checksum2.length	×
78	# Decode the first one and then compare
79	checksum1.unpack("m0").first.unpack("H*").first == checksum2	×
80	else	×
81	# Decode the second one and then compare
82	checksum1 == checksum2.unpack("m0").first.unpack("H*").first	×
83	end	×
84	rescue ArgumentError	×
85	# One of the values was not properly encoded
86	false	×
87	end	×
88	end	×

pulibrary / pdc_describe / 9dbcf7a4-1c56-4510-9614-74ad5a22cff6

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