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

Class Method Summary collapse

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

Class Method Details

.register_compressor(name, compressor) ⇒ Object 



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# File 'lib/fluent/plugin/out_azurestorage_gen2.rb', line 624

def self.register_compressor(name, compressor)
    COMPRESSOR_REGISTRY.register(name, compressor)
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/out_azurestorage_gen2.rb', line 57

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

    if @store_as.nil? || @store_as == "none"
        log.info "azurestorage_gen2: Compression is disabled (store_as: #{@store_as})"
    else
        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)
    end

    @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"
        @final_file_extension = @file_extension
    else
        @final_file_extension = @compressor.ext
    end

end

#format(tag, time, record) ⇒ Object 



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# File 'lib/fluent/plugin/out_azurestorage_gen2.rb', line 113

def format(tag, time, record)
    r = inject_values_to_record(tag, time, record)
    @formatter.format(tag, time, r)
end

#multi_workers_ready? ⇒ Boolean

Returns:

  • (Boolean) 


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

def multi_workers_ready?
    true
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/out_azurestorage_gen2.rb', line 105

def start
    setup_access_token
    if !@skip_container_check
        ensure_container
    end
    super
end

#write(chunk) ⇒ Object 



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# File 'lib/fluent/plugin/out_azurestorage_gen2.rb', line 118

def write(chunk)
    metadata = chunk.metadata
    if @store_as.nil? || @store_as == "none"
        generate_log_name(metadata, @current_index)
        if @last_azure_storage_path != @azure_storage_path
            @current_index = 0
            generate_log_name(metadata, @current_index)
        end
        raw_data = chunk.read
        unless raw_data.empty?
            log.debug "azurestorage_gen2: processing raw data", chunk_id: dump_unique_id_hex(chunk.unique_id)
            upload_blob(raw_data, metadata)
        end
        chunk.close rescue nil
        @last_azure_storage_path = @azure_storage_path
    else
        tmp = Tempfile.new("azure-")
        tmp.binmode
        begin
            @compressor.compress(chunk, tmp)
            tmp.rewind
            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 "azurestorage_gen2: 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.close(true) rescue nil
        end
    end

end