input

package
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 Go to latest Published: Aug 9, 2018 License: MIT Imports: 34 Imported by: 0

Documentation

Overview

Package input defines consumers for aggregating data from a variety of sources. All consumer types must implement interface input.Type.

If the source of an input consumer supports acknowledgements then the implementation of the input will wait for each message to reach a permanent destination before acknowledging it.

Index

Constants

View Source 
const (
	TypeAMQP          = "amqp"
	TypeBroker        = "broker"
	TypeDynamic       = "dynamic"
	TypeFile          = "file"
	TypeFiles         = "files"
	TypeHTTPClient    = "http_client"
	TypeHTTPServer    = "http_server"
	TypeInproc        = "inproc"
	TypeKafka         = "kafka"
	TypeKafkaBalanced = "kafka_balanced"
	TypeMQTT          = "mqtt"
	TypeNanomsg       = "nanomsg"
	TypeNATS          = "nats"
	TypeNATSStream    = "nats_stream"
	TypeNSQ           = "nsq"
	TypeReadUntil     = "read_until"
	TypeRedisList     = "redis_list"
	TypeRedisPubSub   = "redis_pubsub"
	TypeS3            = "s3"
	TypeSQS           = "sqs"
	TypeSTDIN         = "stdin"
	TypeWebsocket     = "websocket"
	TypeZMQ4          = "zmq4"
)

String constants representing each input type.

Variables

View Source 
var Constructors = map[string]TypeSpec{}

Constructors is a map of all input types with their specs.

View Source 
var (
	// ErrBrokerNoInputs is returned when creating a broker with zero inputs.
	ErrBrokerNoInputs = errors.New("attempting to create broker input type with no inputs")
)

Functions

func Descriptions 

func Descriptions() string

Descriptions returns a formatted string of descriptions for each type.

func SanitiseConfig 

func SanitiseConfig(conf Config) (interface{}, error)

SanitiseConfig returns a sanitised version of the Config, meaning sections that aren't relevant to behaviour are removed.

Types

type BrokerConfig 

type BrokerConfig struct {
	Copies int             `json:"copies" yaml:"copies"`
	Inputs brokerInputList `json:"inputs" yaml:"inputs"`
}

BrokerConfig contains configuration fields for the Broker input type.

func NewBrokerConfig 

func NewBrokerConfig() BrokerConfig

NewBrokerConfig creates a new BrokerConfig with default values.

type Config 

type Config struct {
	Type          string                     `json:"type" yaml:"type"`
	AMQP          reader.AMQPConfig          `json:"amqp" yaml:"amqp"`
	Broker        BrokerConfig               `json:"broker" yaml:"broker"`
	Dynamic       DynamicConfig              `json:"dynamic" yaml:"dynamic"`
	File          FileConfig                 `json:"file" yaml:"file"`
	Files         reader.FilesConfig         `json:"files" yaml:"files"`
	HTTPClient    HTTPClientConfig           `json:"http_client" yaml:"http_client"`
	HTTPServer    HTTPServerConfig           `json:"http_server" yaml:"http_server"`
	Inproc        InprocConfig               `json:"inproc" yaml:"inproc"`
	Kafka         reader.KafkaConfig         `json:"kafka" yaml:"kafka"`
	KafkaBalanced reader.KafkaBalancedConfig `json:"kafka_balanced" yaml:"kafka_balanced"`
	MQTT          reader.MQTTConfig          `json:"mqtt" yaml:"mqtt"`
	Nanomsg       reader.ScaleProtoConfig    `json:"nanomsg" yaml:"nanomsg"`
	NATS          reader.NATSConfig          `json:"nats" yaml:"nats"`
	NATSStream    reader.NATSStreamConfig    `json:"nats_stream" yaml:"nats_stream"`
	NSQ           reader.NSQConfig           `json:"nsq" yaml:"nsq"`
	ReadUntil     ReadUntilConfig            `json:"read_until" yaml:"read_until"`
	RedisList     reader.RedisListConfig     `json:"redis_list" yaml:"redis_list"`
	RedisPubSub   reader.RedisPubSubConfig   `json:"redis_pubsub" yaml:"redis_pubsub"`
	S3            reader.AmazonS3Config      `json:"s3" yaml:"s3"`
	SQS           reader.AmazonSQSConfig     `json:"sqs" yaml:"sqs"`
	STDIN         STDINConfig                `json:"stdin" yaml:"stdin"`
	Websocket     reader.WebsocketConfig     `json:"websocket" yaml:"websocket"`
	ZMQ4          *reader.ZMQ4Config         `json:"zmq4,omitempty" yaml:"zmq4,omitempty"`
	Processors    []processor.Config         `json:"processors" yaml:"processors"`
}

Config is the all encompassing configuration struct for all input types.

func NewConfig 

func NewConfig() Config

NewConfig returns a configuration struct fully populated with default values.

func (*Config) UnmarshalJSON 

func (c *Config) UnmarshalJSON(bytes []byte) error

UnmarshalJSON ensures that when parsing configs that are in a map or slice the default values are still applied.

func (*Config) UnmarshalYAML 

func (c *Config) UnmarshalYAML(unmarshal func(interface{}) error) error

UnmarshalYAML ensures that when parsing configs that are in a map or slice the default values are still applied.

type DynamicConfig 

type DynamicConfig struct {
	Inputs    map[string]Config `json:"inputs" yaml:"inputs"`
	Prefix    string            `json:"prefix" yaml:"prefix"`
	TimeoutMS int               `json:"timeout_ms" yaml:"timeout_ms"`
}

DynamicConfig contains configuration for the Dynamic input type.

func NewDynamicConfig 

func NewDynamicConfig() DynamicConfig

NewDynamicConfig creates a new DynamicConfig with default values.

type FileConfig 

type FileConfig struct {
	Path      string `json:"path" yaml:"path"`
	Multipart bool   `json:"multipart" yaml:"multipart"`
	MaxBuffer int    `json:"max_buffer" yaml:"max_buffer"`
	Delim     string `json:"delimiter" yaml:"delimiter"`
}

FileConfig contains configuration values for the File input type.

func NewFileConfig 

func NewFileConfig() FileConfig

NewFileConfig creates a new FileConfig with default values.

type HTTPClient 

type HTTPClient struct {
	// contains filtered or unexported fields
}

HTTPClient is an input type that continuously makes HTTP requests and reads the response bodies as message payloads.

func (*HTTPClient) CloseAsync 

func (h *HTTPClient) CloseAsync()

CloseAsync shuts down the HTTPClient input.

func (*HTTPClient) TransactionChan 

func (h *HTTPClient) TransactionChan() <-chan types.Transaction

TransactionChan returns a transactions channel for consuming messages from this input type.

func (*HTTPClient) WaitForClose 

func (h *HTTPClient) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the HTTPClient input has closed down.

type HTTPClientConfig 

type HTTPClientConfig struct {
	client.Config `json:",inline" yaml:",inline"`
	Payload       string       `json:"payload" yaml:"payload"`
	Stream        StreamConfig `json:"stream" yaml:"stream"`
}

HTTPClientConfig contains configuration for the HTTPClient output type.

func NewHTTPClientConfig 

func NewHTTPClientConfig() HTTPClientConfig

NewHTTPClientConfig creates a new HTTPClientConfig with default values.

type HTTPServer 

type HTTPServer struct {
	// contains filtered or unexported fields
}

HTTPServer is an input type that registers a range of HTTP endpoints where requests can send messages through Benthos. The endpoints are registered on the general Benthos HTTP server by default. It is also possible to specify a custom address to bind a new server to which the endpoints will be registered on instead.

func (*HTTPServer) CloseAsync 

func (h *HTTPServer) CloseAsync()

CloseAsync shuts down the HTTPServer input and stops processing requests.

func (*HTTPServer) TransactionChan 

func (h *HTTPServer) TransactionChan() <-chan types.Transaction

TransactionChan returns a transactions channel for consuming messages from this input.

func (*HTTPServer) WaitForClose 

func (h *HTTPServer) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the HTTPServer input has closed down.

type HTTPServerConfig 

type HTTPServerConfig struct {
	Address   string `json:"address" yaml:"address"`
	Path      string `json:"path" yaml:"path"`
	WSPath    string `json:"ws_path" yaml:"ws_path"`
	TimeoutMS int64  `json:"timeout_ms" yaml:"timeout_ms"`
	CertFile  string `json:"cert_file" yaml:"cert_file"`
	KeyFile   string `json:"key_file" yaml:"key_file"`
}

HTTPServerConfig contains configuration for the HTTPServer input type.

func NewHTTPServerConfig 

func NewHTTPServerConfig() HTTPServerConfig

NewHTTPServerConfig creates a new HTTPServerConfig with default values.

type Inproc 

type Inproc struct {
	// contains filtered or unexported fields
}

Inproc is an input type that reads from a named pipe, which could be the output of a separate Benthos stream of the same process.

func (*Inproc) CloseAsync 

func (i *Inproc) CloseAsync()

CloseAsync shuts down the Inproc input and stops processing requests.

func (*Inproc) TransactionChan 

func (i *Inproc) TransactionChan() <-chan types.Transaction

TransactionChan returns a transactions channel for consuming messages from this input type.

func (*Inproc) WaitForClose 

func (i *Inproc) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the Inproc input has closed down.

type InprocConfig 

type InprocConfig string

InprocConfig is a configuration type for the inproc input.

func NewInprocConfig 

func NewInprocConfig() InprocConfig

NewInprocConfig creates a new inproc input config.

type ReadUntil 

type ReadUntil struct {
	// contains filtered or unexported fields
}

ReadUntil is an input type that continuously reads another input type until a condition returns true on a message consumed.

func (*ReadUntil) CloseAsync 

func (r *ReadUntil) CloseAsync()

CloseAsync shuts down the ReadUntil input and stops processing requests.

func (*ReadUntil) TransactionChan 

func (r *ReadUntil) TransactionChan() <-chan types.Transaction

TransactionChan returns a transactions channel for consuming messages from this input type.

func (*ReadUntil) WaitForClose 

func (r *ReadUntil) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the ReadUntil input has closed down.

type ReadUntilConfig 

type ReadUntilConfig struct {
	Input     *Config          `json:"input" yaml:"input"`
	Restart   bool             `json:"restart_input" yaml:"restart_input"`
	Condition condition.Config `json:"condition" yaml:"condition"`
}

ReadUntilConfig contains configuration values for the ReadUntil input type.

func NewReadUntilConfig 

func NewReadUntilConfig() ReadUntilConfig

NewReadUntilConfig creates a new ReadUntilConfig with default values.

func (ReadUntilConfig) MarshalJSON 

func (r ReadUntilConfig) MarshalJSON() ([]byte, error)

MarshalJSON prints an empty object instead of nil.

func (ReadUntilConfig) MarshalYAML 

func (r ReadUntilConfig) MarshalYAML() (interface{}, error)

MarshalYAML prints an empty object instead of nil.

type Reader 

type Reader struct {
	// contains filtered or unexported fields
}

Reader is an input implementation that reads messages from a reader.Type.

func (*Reader) CloseAsync 

func (r *Reader) CloseAsync()

CloseAsync shuts down the Reader input and stops processing requests.

func (*Reader) TransactionChan 

func (r *Reader) TransactionChan() <-chan types.Transaction

TransactionChan returns a transactions channel for consuming messages from this input type.

func (*Reader) WaitForClose 

func (r *Reader) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the Reader input has closed down.

type STDINConfig 

type STDINConfig struct {
	Multipart bool   `json:"multipart" yaml:"multipart"`
	MaxBuffer int    `json:"max_buffer" yaml:"max_buffer"`
	Delim     string `json:"delimiter" yaml:"delimiter"`
}

STDINConfig contains config fields for the STDIN input type.

func NewSTDINConfig 

func NewSTDINConfig() STDINConfig

NewSTDINConfig creates a STDINConfig populated with default values.

type StreamConfig 

type StreamConfig struct {
	Enabled   bool   `json:"enabled" yaml:"enabled"`
	Reconnect bool   `json:"reconnect" yaml:"reconnect"`
	Multipart bool   `json:"multipart" yaml:"multipart"`
	MaxBuffer int    `json:"max_buffer" yaml:"max_buffer"`
	Delim     string `json:"delimiter" yaml:"delimiter"`
}

StreamConfig contains fields for specifying consumption behaviour when the body of a request is a constant stream of bytes.

type Type 

type Type interface {
	types.Closable
	types.Producer
}

Type is the standard interface of an input type.

func New 

func New(
	conf Config,
	mgr types.Manager,
	log log.Modular,
	stats metrics.Type,
	pipelines ...types.PipelineConstructorFunc,
) (Type, error)

New creates an input type based on an input configuration.

func NewAMQP 

func NewAMQP(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewAMQP creates a new AMQP input type.

func NewAmazonS3 

func NewAmazonS3(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewAmazonS3 creates a new AWS S3 input type.

func NewAmazonSQS 

func NewAmazonSQS(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewAmazonSQS creates a new AWS SQS input type.

func NewBroker 

func NewBroker(
	conf Config,
	mgr types.Manager,
	log log.Modular,
	stats metrics.Type,
	pipelines ...types.PipelineConstructorFunc,
) (Type, error)

NewBroker creates a new Broker input type.

func NewDynamic 

func NewDynamic(
	conf Config,
	mgr types.Manager,
	log log.Modular,
	stats metrics.Type,
	pipelines ...types.PipelineConstructorFunc,
) (Type, error)

NewDynamic creates a new Dynamic input type.

func NewFile 

func NewFile(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewFile creates a new File input type.

func NewFiles 

func NewFiles(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewFiles creates a new Files input type.

func NewHTTPClient 

func NewHTTPClient(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewHTTPClient creates a new HTTPClient input type.

func NewHTTPServer 

func NewHTTPServer(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewHTTPServer creates a new HTTPServer input type.

func NewInproc 

func NewInproc(
	conf Config,
	mgr types.Manager,
	log log.Modular,
	stats metrics.Type,
) (Type, error)

NewInproc creates a new Inproc input type.

func NewKafka 

func NewKafka(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewKafka creates a new Kafka input type.

func NewKafkaBalanced 

func NewKafkaBalanced(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewKafkaBalanced creates a new KafkaBalanced input type.

func NewMQTT 

func NewMQTT(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewMQTT creates a new MQTT input type.

func NewNATS 

func NewNATS(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewNATS creates a new NATS input type.

func NewNATSStream 

func NewNATSStream(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewNATSStream creates a new NATSStream input type.

func NewNSQ 

func NewNSQ(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewNSQ creates a new NSQ input type.

func NewNanomsg 

func NewNanomsg(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewNanomsg creates a new Nanomsg input type.

func NewReadUntil 

func NewReadUntil(
	conf Config,
	mgr types.Manager,
	log log.Modular,
	stats metrics.Type,
) (Type, error)

NewReadUntil creates a new ReadUntil input type.

func NewReader 

func NewReader(
	typeStr string,
	r reader.Type,
	log log.Modular,
	stats metrics.Type,
) (Type, error)

NewReader creates a new Reader input type.

func NewRedisList 

func NewRedisList(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewRedisList creates a new Redis List input type.

func NewRedisPubSub 

func NewRedisPubSub(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewRedisPubSub creates a new RedisPubSub input type.

func NewSTDIN 

func NewSTDIN(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewSTDIN creates a new STDIN input type.

func NewWebsocket 

func NewWebsocket(conf Config, mgr types.Manager, log log.Modular, stats metrics.Type) (Type, error)

NewWebsocket creates a new Websocket input type.

func WrapWithPipelines 

func WrapWithPipelines(in Type, pipeConstructors ...types.PipelineConstructorFunc) (Type, error)

WrapWithPipelines wraps an input with a variadic number of pipelines.

type TypeSpec 

type TypeSpec struct {
	// contains filtered or unexported fields
}

TypeSpec is a struct containing constructors, markdown descriptions and an optional sanitisation function for each input type.

type WithPipeline 

type WithPipeline struct {
	// contains filtered or unexported fields
}

WithPipeline is a type that wraps both an input type and a pipeline type by routing the input through the pipeline, and implements the input.Type interface in order to act like an ordinary input.

func WrapWithPipeline 

func WrapWithPipeline(in Type, pipeConstructor types.PipelineConstructorFunc) (*WithPipeline, error)

WrapWithPipeline routes an input directly into a processing pipeline and returns a type that manages both and acts like an ordinary input.

func (*WithPipeline) CloseAsync 

func (i *WithPipeline) CloseAsync()

CloseAsync triggers a closure of this object but does not block.

func (*WithPipeline) TransactionChan 

func (i *WithPipeline) TransactionChan() <-chan types.Transaction

TransactionChan returns the channel used for consuming transactions from this input.

func (*WithPipeline) WaitForClose 

func (i *WithPipeline) WaitForClose(timeout time.Duration) error

WaitForClose is a blocking call to wait until the object has finished closing down and cleaning up resources.

Source Files

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Directories

Path Synopsis
Package reader defines implementations of an interface for generic message reading from various third party sources.
 Package reader defines implementations of an interface for generic message reading from various third party sources.

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