Class: Fluent::Plugin::AliyunossOutput

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

Constant Summary collapse

DEFAULT_FORMAT_TYPE = 
"out_file"
DEFAULT_TIMEKEY = 
60 * 60 * 24

Instance Method Summary collapse

Instance Method Details

#compress(chunk, tmp) ⇒ Object 



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# File 'lib/fluent/plugin/out_aliyunoss.rb', line 64

def compress(chunk, tmp)
	if @store_as == "orc"
		# We just need a tmp file path, orc-tools convert won't work if file exists
		output_path = tmp.path
		tmp.delete
		# Create a symlink with .json suffix, to fool orc-tools
		chunk_path = File::realpath(chunk.path)
		fake_path = "#{chunk_path}.json"
		if File::exists?(fake_path)
			File::unlink(fake_path)
		end
		File::symlink(chunk_path, fake_path)

		command = "java -Dlog4j.configuration=file:/log4j.properties -jar /orc-tools.jar convert -o #{output_path} #{fake_path}"
		res = system command
		unless res
			raise "failed to execute java -jar /orc-tools.jar command. status = #{$?}"
		end
		File::unlink(fake_path)
	else
		res = system "gzip -c #{chunk.path} > #{tmp.path}"
		unless res
			log.warn "failed to execute gzip command. Fallback to GzipWriter. status = #{$?}"
			begin
				tmp.truncate(0)
				gw = Zlib::GzipWriter.new(tmp)
				chunk.write_to(gw)
				gw.close
			ensure
				gw.close rescue nil
			end
		end
	end
end

#configure(conf) ⇒ Object 



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

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

	@json_formatter = formatter_create(usage: 'formatter_in_example_json', type: 'json')
end

#format(tag, time, record) ⇒ Object 



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# File 'lib/fluent/plugin/out_aliyunoss.rb', line 131

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

#multi_workers_ready? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/fluent/plugin/out_aliyunoss.rb', line 115

def multi_workers_ready?
	true
end

#process_object_key_format(chunk, key_format) ⇒ Object 



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# File 'lib/fluent/plugin/out_aliyunoss.rb', line 99

def process_object_key_format(chunk, key_format)
	key_map = {
		host: Socket.gethostname,
		uuid: SecureRandom.hex(4),
	}
	result = key_format
	key_map.each do |k, v|
		result = result.gsub("%{#{k.to_s}}", v)
	end
	# support replace tag_parts
	chunk.metadata.tag.split('.').each_with_index do |t, idx|
		result = result.gsub("${tag_parts[#{idx}]}", t)
	end
	extract_placeholders(result, chunk.metadata)
end

#start ⇒ Object 



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# File 'lib/fluent/plugin/out_aliyunoss.rb', line 119

def start
	super
	@client = Aliyun::OSS::Client.new(
		:endpoint => @oss_endpoint,
		:access_key_id => @oss_key_id,
		:access_key_secret => @oss_key_secret)

	raise "Specific bucket not exists: #{@oss_bucket}" unless @client.bucket_exists? @oss_bucket

	@bucket = @client.get_bucket(@oss_bucket)
end

#write(chunk) ⇒ Object 



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# File 'lib/fluent/plugin/out_aliyunoss.rb', line 136

def write(chunk)
	begin
		f = Tempfile.new('oss-')
		output_path = f.path
		compress(chunk, f)
		path = process_object_key_format(chunk, "#{@oss_path}.#{@store_as}")
		raise "Upload #{output_path} failed" unless @bucket.resumable_upload(path, output_path)
	ensure
		f.close(true)
	end
end