udplogreceiver

README

UDP Receiver

Receives logs from udp using the opentelemetry-log-collection library.

Supported pipeline types: logs

🚧 This receiver is in alpha and configuration fields are subject to change.

Configuration Fields

Field	Default	Description
listen_address	required	A listen address of the form <ip>:<port>
write_to	$body	The body field written to when creating a new log entry
attributes	{}	A map of key: value pairs to add to the entry's attributes
resource	{}	A map of key: value pairs to add to the entry's resource
add_attributes	false	Adds net.* attributes according to [semantic convention][https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/semantic_conventions/span-general.md#general-network-connection-attributes]
multiline		A multiline configuration block. See below for details
encoding	nop	The encoding of the file being read. See the list of supported encodings below for available options
operators	[]	An array of operators. See below for more details

Operators

Each operator performs a simple responsibility, such as parsing a timestamp or JSON. Chain together operators to process logs into a desired format.

• Every operator has a type.
• Every operator can be given a unique id. If you use the same type of operator more than once in a pipeline, you must specify an id. Otherwise, the id defaults to the value of type.
• Operators will output to the next operator in the pipeline. The last operator in the pipeline will emit from the receiver. Optionally, the output parameter can be used to specify the id of another operator to which logs will be passed directly.
• Only parsers and general purpose operators should be used.

multiline configuration

If set, the multiline configuration block instructs the udplog receiver to split log entries on a pattern other than newlines.

note If multiline is not set at all, it wont't split log entries at all. Every UDP packet is going to be treated as log. note multiline detection works per UDP packet due to protocol limitations.

The multiline configuration block must contain exactly one of line_start_pattern or line_end_pattern. These are regex patterns that match either the beginning of a new log entry, or the end of a log entry.

Supported encodings

Key	Description
nop	No encoding validation. Treats the file as a stream of raw bytes
utf-8	UTF-8 encoding
utf-16le	UTF-16 encoding with little-endian byte order
utf-16be	UTF-16 encoding with little-endian byte order
ascii	ASCII encoding
big5	The Big5 Chinese character encoding

Other less common encodings are supported on a best-effort basis. See https://www.iana.org/assignments/character-sets/character-sets.xhtml for other encodings available.

Example Configurations

Simple

Configuration:

receivers:
  udplog:
    listen_address: "0.0.0.0:54525"

Documentation

Index

• func NewFactory() component.ReceiverFactory
• type ReceiverType
  • func (f ReceiverType) BaseConfig(cfg config.Receiver) stanza.BaseConfig
  • func (f ReceiverType) CreateDefaultConfig() config.Receiver
  • func (f ReceiverType) DecodeInputConfig(cfg config.Receiver) (*operator.Config, error)
  • func (f ReceiverType) Type() config.Type
• type UDPLogConfig

Functions

func NewFactory

func NewFactory() component.ReceiverFactory

NewFactory creates a factory for udp receiver

Types

type ReceiverType

type ReceiverType struct{}

ReceiverType implements stanza.LogReceiverType to create a udp receiver

func (ReceiverType) BaseConfig

func (f ReceiverType) BaseConfig(cfg config.Receiver) stanza.BaseConfig

BaseConfig gets the base config from config, for now

func (ReceiverType) CreateDefaultConfig

func (f ReceiverType) CreateDefaultConfig() config.Receiver

CreateDefaultConfig creates a config with type and version

func (ReceiverType) DecodeInputConfig

func (f ReceiverType) DecodeInputConfig(cfg config.Receiver) (*operator.Config, error)

DecodeInputConfig unmarshals the input operator

func (ReceiverType) Type

func (f ReceiverType) Type() config.Type

Type is the receiver type

type UDPLogConfig

type UDPLogConfig struct {
	stanza.BaseConfig `mapstructure:",squash"`
	Input             stanza.InputConfig `mapstructure:",remain"`
}

UDPLogConfig defines configuration for the udp receiver