Class: Fluent::Plugin::AzureStorageGen2Output

Inherits:
Output
  • Object
show all
Defined in:
lib/fluent/plugin/out_azurestorage_gen2.rb

Defined Under Namespace

Classes: Compressor, GzipCompressor, JsonCompressor, TextCompressor

Constant Summary collapse

DEFAULT_FORMAT_TYPE = 
"out_file"
URL_DOMAIN_SUFFIX = 
'.dfs.core.windows.net'
ACCESS_TOKEN_API_VERSION = 
"2018-02-01"
ABFS_API_VERSION = 
"2018-11-09"
AZURE_BLOCK_SIZE_LIMIT = 
4 * 1024 * 1024 - 1

Instance Method Summary collapse

Constructor Details

#initialize ⇒ AzureStorageGen2Output

Returns a new instance of AzureStorageGen2Output.



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# File 'lib/fluent/plugin/out_azurestorage_gen2.rb', line 17

def initialize
    super
    @compressor = nil
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/out_azurestorage_gen2.rb', line 56

def configure(conf)
    compat_parameters_convert(conf, :buffer, :formatter, :inject)
    super

    begin
        @compressor = COMPRESSOR_REGISTRY.lookup(@store_as).new(:buffer_type => @buffer_type, :log => log)
    rescue => e
        log.warn "#{@store_as} not found. Use 'text' instead"
        @compressor = TextCompressor.new
    end
    @compressor.configure(conf)

    @formatter = formatter_create
      
    if @localtime
      @path_slicer = Proc.new {|path|
        Time.now.strftime(path)
      }
    else
      @path_slicer = Proc.new {|path|
        Time.now.utc.strftime(path)
      }
    end
      
    if @azure_container.nil?
      raise Fluent::ConfigError, "azure_container is needed"
    end

    @azure_storage_path = ''
    @last_azure_storage_path = ''
    @current_index = 0
    if @store_as.nil? || @store_as == "none"
        @blob_content_type = "text/plain"
        @final_file_extension = @file_extension
    else
        @blob_content_type = @compressor.content_type
        @final_file_extension = @compressor.ext
    end

end

#multi_workers_ready? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fluent/plugin/out_azurestorage_gen2.rb', line 97

def multi_workers_ready?
    true
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/out_azurestorage_gen2.rb', line 101

def start
    setup_access_token
    ensure_container
    super
end

#write(chunk) ⇒ Object 



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# File 'lib/fluent/plugin/out_azurestorage_gen2.rb', line 107

def write(chunk)
    metadata = chunk.metadata
    if @store_as.nil? || @store_as == "none"
        raw_data=''
        generate_log_name(metadata, @current_index)
        if @last_azure_storage_path != @azure_storage_path
            @current_index = 0
            generate_log_name(metadata, @current_index)
        end
        chunk.each do |emit_time, record|
            if @message_field.nil? || @message_field.empty?
                raw_data << "#{Yajl.dump(record)}\n"
            elsif record.key?(@message_field)
                line = record[@message_field].chomp
                raw_data << "#{line}\n"
            end
        end
        raw_data = raw_data.chomp
        unless raw_data.empty?
            upload_blob(raw_data, metadata)
        end
        @last_azure_storage_path = @azure_storage_path
    else
        tmp = Tempfile.new("azure-")
        begin
            @compressor.compress(chunk, tmp)
            tmp.close
            generate_log_name(metadata, @current_index)
            if @last_azure_storage_path != @azure_storage_path
                @current_index = 0
                generate_log_name(metadata, @current_index)
            end
            log.debug "Start uploading temp file: #{tmp.path}"
            content = File.open(tmp.path, 'rb') { |file| file.read }
            upload_blob(content, metadata)
            @last_azure_storage_path = @azure_storage_path
        ensure
            tmp.unlink
        end
    end

end