Class: S3FileCache

Inherits:
ApplicationRecord show all
Defined in:
app/models/s3_file_cache.rb

Defined Under Namespace

Classes: S3Object

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.cleaning_directory_and_record! ⇒ Object 



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# File 'app/models/s3_file_cache.rb', line 19

def cleaning_directory_and_record!
  limit = Time.zone.now - expire_seconds

  expired_files = where('created_at < ?', limit)
  expired_files.each do |expired_file|
    FileUtils.rm(expired_file.place)
    expired_file.destroy
  end
end

.expire_seconds ⇒ Object 



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# File 'app/models/s3_file_cache.rb', line 29

def expire_seconds
  S3FileCacheDownload.expire_seconds.seconds
end

.file_cache_directory ⇒ Object 



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# File 'app/models/s3_file_cache.rb', line 33

def file_cache_directory
  S3FileCacheDownload.file_cache_directory
end

.find_s3_cache_file_or_create!(s3_file_path, bucket_name) ⇒ Object 



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# File 'app/models/s3_file_cache.rb', line 3

def find_s3_cache_file_or_create!(s3_file_path, bucket_name)
  S3FileCache.transaction do
    s3_file_cache = S3FileCache.find_or_create_by!(s3_full_path: s3_file_path, bucket_name: bucket_name)

    if s3_file_cache.expire?
      FileUtils.rm(s3_file_cache.place)
      s3_file_cache.destroy

      s3_file_cache = S3FileCache.create!(s3_full_path: s3_file_path, bucket_name: bucket_name)
    end

    s3_file_cache.fetch!
    s3_file_cache
  end
end

Instance Method Details

#expire? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/s3_file_cache.rb', line 38

def expire?
  created_at + S3FileCacheDownload.expire_seconds < Time.zone.now
end

#fetch! ⇒ Object 



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# File 'app/models/s3_file_cache.rb', line 42

def fetch!
  return if File.exist?(place)

  s3_object = S3FileCache::S3Object.new(bucket_name, s3_full_path)
  File.open(place, 'w') do |file|
    s3_object.get.each_line do |line|
      file.write line
    end
  end
end

#filename ⇒ Object 



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# File 'app/models/s3_file_cache.rb', line 57

def filename
  File.basename(s3_full_path)
end

#place ⇒ Object 



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# File 'app/models/s3_file_cache.rb', line 53

def place
  "#{S3FileCache.file_cache_directory}/#{id}"
end