Class: B2::Connection

Inherits:
Object
  • Object
show all
Defined in:
lib/b2/connection.rb

Instance Method Summary collapse

Constructor Details

#initialize(key_id, secret, pool: 5, timeout: 5) ⇒ Connection

Returns a new instance of Connection.



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# File 'lib/b2/connection.rb', line 7

def initialize(key_id, secret, pool: 5, timeout: 5)
  @mutex        = Mutex.new
  @availability = ConditionVariable.new
  @max          = pool
  @timeout      = timeout
  @free_pool    = []
  @used_pool    = []
  
  @key_id = key_id
  @key_secret = secret

  @buckets_cache = []
end

Instance Method Details

#account_id ⇒ Object 



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# File 'lib/b2/connection.rb', line 21

def 
  return @account_id if !@account_id.nil?
  
  @account_id = with_connection { |conn| conn. }
end

#authorization_token ⇒ Object 



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# File 'lib/b2/connection.rb', line 51

def authorization_token
  with_connection { |conn| conn.authorization_token }
end

#buckets ⇒ Object 



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# File 'lib/b2/connection.rb', line 63

def buckets
  post('/b2api/v2/b2_list_buckets', {accountId: })['buckets'].map do |b|
    B2::Bucket.new(b, self)
  end
end

#download(bucket, key, to = nil) ⇒ Object 



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# File 'lib/b2/connection.rb', line 89

def download(bucket, key, to=nil)
  opened_file = (to && to.is_a?(String))
  to = ::File.open(to, 'wb') if to.is_a?(String)
  digestor = Digest::SHA1.new
  data = ""

  uri = URI.parse(download_url)
  conn = Net::HTTP.new(uri.host, uri.port)
  conn.use_ssl = uri.scheme == 'https'

  req = Net::HTTP::Get.new("/file/#{bucket}/#{key}")
  req['Authorization'] = authorization_token
  conn.start do |http|
    http.request(req) do |response|
      case response
      when Net::HTTPSuccess
        response.read_body do |chunk|
          digestor << chunk
          if to
            to << chunk
          elsif block_given?
            yield(chunk)
          else
            data << chunk
          end
        end
  
        if response['X-Bz-Content-Sha1'] != 'none' && digestor.hexdigest != response['X-Bz-Content-Sha1']
          rase B2::FileIntegrityError.new("SHA1 Mismatch, expected: \"#{response['X-Bz-Content-Sha1']}\", actual: \"#{digestor.hexdigest}\"")
        end
      when Net::HTTPNotFound
        raise B2::NotFound.new(JSON.parse(response.body)['message'])
      else
        begin
          body = JSON.parse(response.body)
          if body['code'] == 'not_found'
            raise B2::NotFound(body['message'])
          else
            raise "#{body['code']} (#{body['message']})"
          end
        rescue
          raise response.body
        end
      end
    end
  end
  
  if opened_file
    to.close
  elsif to
    to.flush
  end
  !block_given? && to.nil? ? data : nil
end

#download_url ⇒ Object 



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# File 'lib/b2/connection.rb', line 59

def download_url
  with_connection { |conn| conn.download_url }
end

#get(path, body = nil, &block) ⇒ Object 



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# File 'lib/b2/connection.rb', line 144

def get(path, body=nil, &block)
  request = Net::HTTP::Get.new(path)
  
  send_request(request, body, &block)
end

#get_download_url(bucket, filename, expires_in: 3_600, disposition: nil) ⇒ Object 



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# File 'lib/b2/connection.rb', line 77

def get_download_url(bucket, filename, expires_in: 3_600, disposition: nil)
  response = post("/b2api/v2/b2_get_download_authorization", {
    bucketId: lookup_bucket_id(bucket),
    fileNamePrefix: filename,
    validDurationInSeconds: expires_in,
    b2ContentDisposition: disposition
  })
  url =  download_url + '/file/' + bucket + '/' + filename + "?Authorization=" + response['authorizationToken']
  url += "&b2ContentDisposition=#{CGI.escape(disposition)}" if disposition
  url
end

#lookup_bucket_id(name) ⇒ Object 



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# File 'lib/b2/connection.rb', line 69

def lookup_bucket_id(name)
  bucket = @buckets_cache.find{ |b| b.name == name }
  return bucket.id if bucket
  
  @buckets_cache = buckets
  @buckets_cache.find{ |b| b.name == name }&.id
end

#post(path, body = nil, &block) ⇒ Object 



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# File 'lib/b2/connection.rb', line 150

def post(path, body=nil, &block)
  request = Net::HTTP::Post.new(path)
  
  send_request(request, body, &block)
end

#send_request(request, body = nil, &block) ⇒ Object 



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# File 'lib/b2/connection.rb', line 55

def send_request(request, body=nil, &block)
  with_connection { |conn| conn.send_request(request, body, &block) }
end

#with_connection ⇒ Object 



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# File 'lib/b2/connection.rb', line 27

def with_connection
  conn = @mutex.synchronize do
    cxn = if !@free_pool.empty?
      @free_pool.shift
    elsif @free_pool.size + @used_pool.size < @max
      B2::APIConnection.new(@key_id, @key_secret)
    else
      @availability.wait(@mutex, @timeout)
      @free_pool.shift || B2::APIConnection.new(@key_id, @key_secret)
    end
    
    @used_pool << cxn
    cxn
  end
  
  yield conn
ensure
  @mutex.synchronize do
    @used_pool.delete(conn)
    @free_pool << conn if conn.active?
    @availability.signal()
  end
end