reader

package
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 Go to latest Published: Sep 17, 2019 License: MIT Imports: 52 Imported by: 1

Documentation

Overview

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

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func OptLinesSetDelimiter 

func OptLinesSetDelimiter(delimiter string) func(r *Lines)

OptLinesSetDelimiter is a option func that sets the delimiter (default '\n') used to divide lines (message parts) in the stream of data.

func OptLinesSetMaxBuffer 

func OptLinesSetMaxBuffer(maxBuffer int) func(r *Lines)

OptLinesSetMaxBuffer is a option func that sets the maximum size of the line parsing buffers.

func OptLinesSetMultipart 

func OptLinesSetMultipart(multipart bool) func(r *Lines)

OptLinesSetMultipart is a option func that sets the boolean flag indicating whether lines should be parsed as multipart or not.

Types

type AMQP 

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

AMQP is an input type that reads messages via the AMQP 0.91 protocol.

func (*AMQP) Acknowledge 

func (a *AMQP) Acknowledge(err error) error

Acknowledge instructs whether unacknowledged messages have been successfully propagated.

func (*AMQP) CloseAsync 

func (a *AMQP) CloseAsync()

CloseAsync shuts down the AMQP input and stops processing requests.

func (*AMQP) Connect 

func (a *AMQP) Connect() (err error)

Connect establishes a connection to an AMQP server.

func (*AMQP) Read 

func (a *AMQP) Read() (types.Message, error)

Read a new AMQP message.

func (*AMQP) WaitForClose 

func (a *AMQP) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the AMQP input has closed down.

type AMQPBindingConfig 

type AMQPBindingConfig struct {
	Exchange   string `json:"exchange" yaml:"exchange"`
	RoutingKey string `json:"key" yaml:"key"`
}

AMQPBindingConfig contains fields describing a queue binding to be declared.

type AMQPConfig 

type AMQPConfig struct {
	URL             string                 `json:"url" yaml:"url"`
	Queue           string                 `json:"queue" yaml:"queue"`
	QueueDeclare    AMQPQueueDeclareConfig `json:"queue_declare" yaml:"queue_declare"`
	BindingsDeclare []AMQPBindingConfig    `json:"bindings_declare" yaml:"bindings_declare"`
	ConsumerTag     string                 `json:"consumer_tag" yaml:"consumer_tag"`
	PrefetchCount   int                    `json:"prefetch_count" yaml:"prefetch_count"`
	PrefetchSize    int                    `json:"prefetch_size" yaml:"prefetch_size"`
	MaxBatchCount   int                    `json:"max_batch_count" yaml:"max_batch_count"`
	TLS             btls.Config            `json:"tls" yaml:"tls"`
}

AMQPConfig contains configuration for the AMQP input type.

func NewAMQPConfig 

func NewAMQPConfig() AMQPConfig

NewAMQPConfig creates a new AMQPConfig with default values.

type AMQPQueueDeclareConfig 

type AMQPQueueDeclareConfig struct {
	Enabled bool `json:"enabled" yaml:"enabled"`
	Durable bool `json:"durable" yaml:"durable"`
}

AMQPQueueDeclareConfig contains fields indicating whether the target AMQP queue needs to be declared and bound to an exchange, as well as any fields specifying how to accomplish that.

type AmazonS3 

type AmazonS3 struct {
	// contains filtered or unexported fields
}

AmazonS3 is a benthos reader.Type implementation that reads messages from an Amazon S3 bucket.

func NewAmazonS3 

func NewAmazonS3(
	conf AmazonS3Config,
	log log.Modular,
	stats metrics.Type,
) (*AmazonS3, error)

NewAmazonS3 creates a new Amazon S3 bucket reader.Type.

func (*AmazonS3) Acknowledge 

func (a *AmazonS3) Acknowledge(err error) error

Acknowledge confirms whether or not our unacknowledged messages have been successfully propagated or not.

func (*AmazonS3) CloseAsync 

func (a *AmazonS3) CloseAsync()

CloseAsync begins cleaning up resources used by this reader asynchronously.

func (*AmazonS3) Connect 

func (a *AmazonS3) Connect() error

Connect attempts to establish a connection to the target S3 bucket and any relevant queues used to traverse the objects (SQS, etc).

func (*AmazonS3) Read 

func (a *AmazonS3) Read() (types.Message, error)

Read attempts to read a new message from the target S3 bucket.

func (*AmazonS3) WaitForClose 

func (a *AmazonS3) WaitForClose(time.Duration) error

WaitForClose will block until either the reader is closed or a specified timeout occurs.

type AmazonS3Config 

type AmazonS3Config struct {
	sess.Config        `json:",inline" yaml:",inline"`
	Bucket             string                  `json:"bucket" yaml:"bucket"`
	Prefix             string                  `json:"prefix" yaml:"prefix"`
	Retries            int                     `json:"retries" yaml:"retries"`
	ForcePathStyleURLs bool                    `json:"force_path_style_urls" yaml:"force_path_style_urls"`
	DownloadManager    S3DownloadManagerConfig `json:"download_manager" yaml:"download_manager"`
	DeleteObjects      bool                    `json:"delete_objects" yaml:"delete_objects"`
	SQSURL             string                  `json:"sqs_url" yaml:"sqs_url"`
	SQSBodyPath        string                  `json:"sqs_body_path" yaml:"sqs_body_path"`
	SQSBucketPath      string                  `json:"sqs_bucket_path" yaml:"sqs_bucket_path"`
	SQSEnvelopePath    string                  `json:"sqs_envelope_path" yaml:"sqs_envelope_path"`
	SQSMaxMessages     int64                   `json:"sqs_max_messages" yaml:"sqs_max_messages"`
	MaxBatchCount      int                     `json:"max_batch_count" yaml:"max_batch_count"`
	Timeout            string                  `json:"timeout" yaml:"timeout"`
}

AmazonS3Config contains configuration values for the AmazonS3 input type.

func NewAmazonS3Config 

func NewAmazonS3Config() AmazonS3Config

NewAmazonS3Config creates a new AmazonS3Config with default values.

type AmazonSQS 

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

AmazonSQS is a benthos reader.Type implementation that reads messages from an Amazon SQS queue.

func NewAmazonSQS 

func NewAmazonSQS(
	conf AmazonSQSConfig,
	log log.Modular,
	stats metrics.Type,
) (*AmazonSQS, error)

NewAmazonSQS creates a new Amazon SQS reader.Type.

func (*AmazonSQS) Acknowledge 

func (a *AmazonSQS) Acknowledge(err error) error

Acknowledge confirms whether or not our unacknowledged messages have been successfully propagated or not.

func (*AmazonSQS) CloseAsync 

func (a *AmazonSQS) CloseAsync()

CloseAsync begins cleaning up resources used by this reader asynchronously.

func (*AmazonSQS) Connect 

func (a *AmazonSQS) Connect() error

Connect attempts to establish a connection to the target SQS queue.

func (*AmazonSQS) Read 

func (a *AmazonSQS) Read() (types.Message, error)

Read attempts to read a new message from the target SQS.

func (*AmazonSQS) WaitForClose 

func (a *AmazonSQS) WaitForClose(time.Duration) error

WaitForClose will block until either the reader is closed or a specified timeout occurs.

type AmazonSQSConfig 

type AmazonSQSConfig struct {
	sess.Config         `json:",inline" yaml:",inline"`
	URL                 string `json:"url" yaml:"url"`
	Timeout             string `json:"timeout" yaml:"timeout"`
	MaxNumberOfMessages int64  `json:"max_number_of_messages" yaml:"max_number_of_messages"`
	DeleteMessage       bool   `json:"delete_message" yaml:"delete_message"`
}

AmazonSQSConfig contains configuration values for the input type.

func NewAmazonSQSConfig 

func NewAmazonSQSConfig() AmazonSQSConfig

NewAmazonSQSConfig creates a new Config with default values.

type CutOff 

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

CutOff is a wrapper for reader.Type implementations that exits from WaitForClose immediately. This is only useful when the underlying readable resource cannot be closed reliably and can block forever.

func NewCutOff 

func NewCutOff(r Type) *CutOff

NewCutOff returns a new CutOff wrapper around a reader.Type.

func (*CutOff) Acknowledge 

func (c *CutOff) Acknowledge(err error) error

Acknowledge instructs whether messages read since the last Acknowledge call were successfully propagated. If the error is nil this will be forwarded to the underlying wrapped reader. If a non-nil error is returned the buffer of messages will be resent.

func (*CutOff) CloseAsync 

func (c *CutOff) CloseAsync()

CloseAsync triggers the asynchronous closing of the reader.

func (*CutOff) Connect 

func (c *CutOff) Connect() error

Connect attempts to establish a connection to the source, if unsuccessful returns an error. If the attempt is successful (or not necessary) returns nil.

func (*CutOff) Read 

func (c *CutOff) Read() (types.Message, error)

Read attempts to read a new message from the source.

func (*CutOff) WaitForClose 

func (c *CutOff) WaitForClose(tout time.Duration) error

WaitForClose blocks until either the reader is finished closing or a timeout occurs.

type Files 

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

Files is an input type that reads file contents at a path as messages.

func (*Files) Acknowledge 

func (f *Files) Acknowledge(err error) error

Acknowledge instructs whether unacknowledged messages have been successfully propagated.

func (*Files) CloseAsync 

func (f *Files) CloseAsync()

CloseAsync shuts down the Files input and stops processing requests.

func (*Files) Connect 

func (f *Files) Connect() (err error)

Connect establishes a connection.

func (*Files) Read 

func (f *Files) Read() (types.Message, error)

Read a new Files message.

func (*Files) WaitForClose 

func (f *Files) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the Files input has closed down.

type FilesConfig 

type FilesConfig struct {
	Path string `json:"path" yaml:"path"`
}

FilesConfig contains configuration for the Files input type.

func NewFilesConfig 

func NewFilesConfig() FilesConfig

NewFilesConfig creates a new FilesConfig with default values.

type GCPPubSub 

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

GCPPubSub is a benthos reader.Type implementation that reads messages from a GCP Cloud Pub/Sub subscription.

func NewGCPPubSub 

func NewGCPPubSub(
	conf GCPPubSubConfig,
	log log.Modular,
	stats metrics.Type,
) (*GCPPubSub, error)

NewGCPPubSub creates a new GCP pubsub reader.Type.

func (*GCPPubSub) Acknowledge 

func (c *GCPPubSub) Acknowledge(err error) error

Acknowledge confirms whether or not our unacknowledged messages have been successfully propagated or not.

func (*GCPPubSub) CloseAsync 

func (c *GCPPubSub) CloseAsync()

CloseAsync begins cleaning up resources used by this reader asynchronously.

func (*GCPPubSub) Connect 

func (c *GCPPubSub) Connect() error

Connect attempts to establish a connection to the target subscription.

func (*GCPPubSub) Read 

func (c *GCPPubSub) Read() (types.Message, error)

Read attempts to read a new message from the target subscription.

func (*GCPPubSub) WaitForClose 

func (c *GCPPubSub) WaitForClose(time.Duration) error

WaitForClose will block until either the reader is closed or a specified timeout occurs.

type GCPPubSubConfig 

type GCPPubSubConfig struct {
	ProjectID              string `json:"project" yaml:"project"`
	SubscriptionID         string `json:"subscription" yaml:"subscription"`
	MaxOutstandingMessages int    `json:"max_outstanding_messages" yaml:"max_outstanding_messages"`
	MaxOutstandingBytes    int    `json:"max_outstanding_bytes" yaml:"max_outstanding_bytes"`
	MaxBatchCount          int    `json:"max_batch_count" yaml:"max_batch_count"`
}

GCPPubSubConfig contains configuration values for the input type.

func NewGCPPubSubConfig 

func NewGCPPubSubConfig() GCPPubSubConfig

NewGCPPubSubConfig creates a new Config with default values.

type HDFS 

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

HDFS is a benthos reader.Type implementation that reads messages from a HDFS directory.

func NewHDFS 

func NewHDFS(
	conf HDFSConfig,
	log log.Modular,
	stats metrics.Type,
) *HDFS

NewHDFS creates a new HDFS writer.Type.

func (*HDFS) Acknowledge 

func (h *HDFS) Acknowledge(err error) error

Acknowledge instructs whether unacknowledged messages have been successfully propagated.

func (*HDFS) CloseAsync 

func (h *HDFS) CloseAsync()

CloseAsync shuts down the HDFS input and stops processing requests.

func (*HDFS) Connect 

func (h *HDFS) Connect() error

Connect attempts to establish a connection to the target HDFS host.

func (*HDFS) Read 

func (h *HDFS) Read() (types.Message, error)

Read a new HDFS message.

func (*HDFS) WaitForClose 

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

WaitForClose blocks until the HDFS input has closed down.

type HDFSConfig 

type HDFSConfig struct {
	Hosts     []string `json:"hosts" yaml:"hosts"`
	User      string   `json:"user" yaml:"user"`
	Directory string   `json:"directory" yaml:"directory"`
}

HDFSConfig contains configuration fields for the HDFS input type.

func NewHDFSConfig 

func NewHDFSConfig() HDFSConfig

NewHDFSConfig creates a new Config with default values.

type Kafka 

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

Kafka is an input type that reads from a Kafka instance.

func NewKafka 

func NewKafka(
	conf KafkaConfig, log log.Modular, stats metrics.Type,
) (*Kafka, error)

NewKafka creates a new Kafka input type.

func (*Kafka) Acknowledge 

func (k *Kafka) Acknowledge(err error) error

Acknowledge instructs whether the current offset should be committed.

func (*Kafka) CloseAsync 

func (k *Kafka) CloseAsync()

CloseAsync shuts down the Kafka input and stops processing requests.

func (*Kafka) Connect 

func (k *Kafka) Connect() error

Connect establishes a Kafka connection.

func (*Kafka) Read 

func (k *Kafka) Read() (types.Message, error)

Read attempts to read a message from a Kafka topic.

func (*Kafka) WaitForClose 

func (k *Kafka) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the Kafka input has closed down.

type KafkaBalanced 

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

KafkaBalanced is an input type that reads from a Kafka cluster by balancing partitions across other consumers of the same consumer group.

func NewKafkaBalanced 

func NewKafkaBalanced(
	conf KafkaBalancedConfig, log log.Modular, stats metrics.Type,
) (*KafkaBalanced, error)

NewKafkaBalanced creates a new KafkaBalanced input type.

func (*KafkaBalanced) Acknowledge 

func (k *KafkaBalanced) Acknowledge(err error) error

Acknowledge instructs whether the current offset should be committed.

func (*KafkaBalanced) Cleanup 

func (k *KafkaBalanced) Cleanup(sesh sarama.ConsumerGroupSession) error

Cleanup is run at the end of a session, once all ConsumeClaim goroutines have exited but before the offsets are committed for the very last time.

func (*KafkaBalanced) CloseAsync 

func (k *KafkaBalanced) CloseAsync()

CloseAsync shuts down the KafkaBalanced input and stops processing requests.

func (*KafkaBalanced) Connect 

func (k *KafkaBalanced) Connect() error

Connect establishes a KafkaBalanced connection.

func (*KafkaBalanced) ConsumeClaim 

func (k *KafkaBalanced) ConsumeClaim(sess sarama.ConsumerGroupSession, claim sarama.ConsumerGroupClaim) error

ConsumeClaim must start a consumer loop of ConsumerGroupClaim's Messages(). Once the Messages() channel is closed, the Handler must finish its processing loop and exit.

func (*KafkaBalanced) Read 

func (k *KafkaBalanced) Read() (types.Message, error)

Read attempts to read a message from a KafkaBalanced topic.

func (*KafkaBalanced) Setup 

func (k *KafkaBalanced) Setup(sesh sarama.ConsumerGroupSession) error

Setup is run at the beginning of a new session, before ConsumeClaim.

func (*KafkaBalanced) WaitForClose 

func (k *KafkaBalanced) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the KafkaBalanced input has closed down.

type KafkaBalancedConfig 

type KafkaBalancedConfig struct {
	Addresses           []string                 `json:"addresses" yaml:"addresses"`
	ClientID            string                   `json:"client_id" yaml:"client_id"`
	ConsumerGroup       string                   `json:"consumer_group" yaml:"consumer_group"`
	Group               KafkaBalancedGroupConfig `json:"group" yaml:"group"`
	CommitPeriod        string                   `json:"commit_period" yaml:"commit_period"`
	MaxProcessingPeriod string                   `json:"max_processing_period" yaml:"max_processing_period"`
	FetchBufferCap      int                      `json:"fetch_buffer_cap" yaml:"fetch_buffer_cap"`
	Topics              []string                 `json:"topics" yaml:"topics"`
	StartFromOldest     bool                     `json:"start_from_oldest" yaml:"start_from_oldest"`
	TargetVersion       string                   `json:"target_version" yaml:"target_version"`
	MaxBatchCount       int                      `json:"max_batch_count" yaml:"max_batch_count"`
	TLS                 btls.Config              `json:"tls" yaml:"tls"`
	SASL                SASLConfig               `json:"sasl" yaml:"sasl"`
}

KafkaBalancedConfig contains configuration for the KafkaBalanced input type.

func NewKafkaBalancedConfig 

func NewKafkaBalancedConfig() KafkaBalancedConfig

NewKafkaBalancedConfig creates a new KafkaBalancedConfig with default values.

type KafkaBalancedGroupConfig 

type KafkaBalancedGroupConfig struct {
	SessionTimeout    string `json:"session_timeout" yaml:"session_timeout"`
	HeartbeatInterval string `json:"heartbeat_interval" yaml:"heartbeat_interval"`
	RebalanceTimeout  string `json:"rebalance_timeout" yaml:"rebalance_timeout"`
}

KafkaBalancedGroupConfig contains config fields for Kafka consumer groups.

func NewKafkaBalancedGroupConfig 

func NewKafkaBalancedGroupConfig() KafkaBalancedGroupConfig

NewKafkaBalancedGroupConfig returns a KafkaBalancedGroupConfig with default values.

type KafkaConfig 

type KafkaConfig struct {
	Addresses           []string    `json:"addresses" yaml:"addresses"`
	ClientID            string      `json:"client_id" yaml:"client_id"`
	ConsumerGroup       string      `json:"consumer_group" yaml:"consumer_group"`
	CommitPeriod        string      `json:"commit_period" yaml:"commit_period"`
	MaxProcessingPeriod string      `json:"max_processing_period" yaml:"max_processing_period"`
	FetchBufferCap      int         `json:"fetch_buffer_cap" yaml:"fetch_buffer_cap"`
	Topic               string      `json:"topic" yaml:"topic"`
	Partition           int32       `json:"partition" yaml:"partition"`
	StartFromOldest     bool        `json:"start_from_oldest" yaml:"start_from_oldest"`
	TargetVersion       string      `json:"target_version" yaml:"target_version"`
	MaxBatchCount       int         `json:"max_batch_count" yaml:"max_batch_count"`
	TLS                 btls.Config `json:"tls" yaml:"tls"`
	SASL                SASLConfig  `json:"sasl" yaml:"sasl"`
}

KafkaConfig contains configuration fields for the Kafka input type.

func NewKafkaConfig 

func NewKafkaConfig() KafkaConfig

NewKafkaConfig creates a new KafkaConfig with default values.

type Kinesis 

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

Kinesis is a benthos reader.Type implementation that reads messages from an Amazon Kinesis stream.

func NewKinesis 

func NewKinesis(
	conf KinesisConfig,
	log log.Modular,
	stats metrics.Type,
) (*Kinesis, error)

NewKinesis creates a new Amazon Kinesis stream reader.Type.

func (*Kinesis) Acknowledge 

func (k *Kinesis) Acknowledge(err error) error

Acknowledge confirms whether or not our unacknowledged messages have been successfully propagated or not.

func (*Kinesis) CloseAsync 

func (k *Kinesis) CloseAsync()

CloseAsync begins cleaning up resources used by this reader asynchronously.

func (*Kinesis) Connect 

func (k *Kinesis) Connect() error

Connect attempts to establish a connection to the target SQS queue.

func (*Kinesis) Read 

func (k *Kinesis) Read() (types.Message, error)

Read attempts to read a new message from the target SQS.

func (*Kinesis) WaitForClose 

func (k *Kinesis) WaitForClose(time.Duration) error

WaitForClose will block until either the reader is closed or a specified timeout occurs.

type KinesisBalanced 

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

KinesisBalanced is a benthos reader.Type implementation that reads messages from an Amazon Kinesis stream.

func NewKinesisBalanced 

func NewKinesisBalanced(
	conf KinesisBalancedConfig,
	log log.Modular,
	stats metrics.Type,
) (*KinesisBalanced, error)

NewKinesisBalanced creates a new Amazon Kinesis stream reader.Type.

func (*KinesisBalanced) Acknowledge 

func (k *KinesisBalanced) Acknowledge(err error) error

Acknowledge confirms whether or not our unacknowledged messages have been successfully propagated or not.

func (*KinesisBalanced) CloseAsync 

func (k *KinesisBalanced) CloseAsync()

CloseAsync begins cleaning up resources used by this reader asynchronously.

func (*KinesisBalanced) Connect 

func (k *KinesisBalanced) Connect() error

Connect attempts to establish a connection to the target Kinesis stream.

func (*KinesisBalanced) Init 

func (k *KinesisBalanced) Init(shardID string) error

Init is required by the KinesisConsumer interface

func (*KinesisBalanced) ProcessRecords 

func (k *KinesisBalanced) ProcessRecords(records []*gokini.Records, _ *gokini.KinesisConsumer)

ProcessRecords implements the KinesisConsumer interface

func (*KinesisBalanced) Read 

func (k *KinesisBalanced) Read() (types.Message, error)

Read attempts to read a new message from the target Kinesis stream.

func (*KinesisBalanced) Shutdown 

func (k *KinesisBalanced) Shutdown()

Shutdown implements the KinesisConsumer interface

func (*KinesisBalanced) WaitForClose 

func (k *KinesisBalanced) WaitForClose(time.Duration) error

WaitForClose will block until either the reader is closed or a specified timeout occurs.

type KinesisBalancedConfig 

type KinesisBalancedConfig struct {
	sess.Config           `json:",inline" yaml:",inline"`
	Stream                string `json:"stream" yaml:"stream"`
	DynamoDBTable         string `json:"dynamodb_table" yaml:"dynamodb_table"`
	DynamoDBBillingMode   string `json:"dynamodb_billing_mode" yaml:"dynamodb_billing_mode"`
	DynamoDBReadCapacity  int64  `json:"dynamodb_read_provision" yaml:"dynamodb_read_provision"`
	DynamoDBWriteCapacity int64  `json:"dynamodb_write_provision" yaml:"dynamodb_write_provision"`
	MaxBatchCount         int    `json:"max_batch_count" yaml:"max_batch_count"`
	StartFromOldest       bool   `json:"start_from_oldest" yaml:"start_from_oldest"`
}

KinesisBalancedConfig is configuration values for the input type.

func NewKinesisBalancedConfig 

func NewKinesisBalancedConfig() KinesisBalancedConfig

NewKinesisBalancedConfig creates a new Config with default values.

type KinesisConfig 

type KinesisConfig struct {
	sess.Config     `json:",inline" yaml:",inline"`
	Limit           int64  `json:"limit" yaml:"limit"`
	Stream          string `json:"stream" yaml:"stream"`
	Shard           string `json:"shard" yaml:"shard"`
	DynamoDBTable   string `json:"dynamodb_table" yaml:"dynamodb_table"`
	ClientID        string `json:"client_id" yaml:"client_id"`
	CommitPeriod    string `json:"commit_period" yaml:"commit_period"`
	StartFromOldest bool   `json:"start_from_oldest" yaml:"start_from_oldest"`
	Timeout         string `json:"timeout" yaml:"timeout"`
}

KinesisConfig is configuration values for the input type.

func NewKinesisConfig 

func NewKinesisConfig() KinesisConfig

NewKinesisConfig creates a new Config with default values.

type Lines 

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

Lines is a reader implementation that continuously reads line delimited messages from an io.Reader type.

func NewLines 

func NewLines(
	handleCtor func() (io.Reader, error),
	onClose func(),
	options ...func(r *Lines),
) (*Lines, error)

NewLines creates a new reader input type.

Callers must provide a constructor function for the target io.Reader, which is called on start up and again each time a reader is exhausted. If the constructor is called but there is no more content to create a Reader for then the error `io.EOF` should be returned and the Lines will close.

Callers must also provide an onClose function, which will be called if the Lines has been instructed to shut down. This function should unblock any blocked Read calls.

func (*Lines) Acknowledge 

func (r *Lines) Acknowledge(err error) error

Acknowledge confirms whether or not our unacknowledged messages have been successfully propagated or not.

func (*Lines) CloseAsync 

func (r *Lines) CloseAsync()

CloseAsync shuts down the reader input and stops processing requests.

func (*Lines) Connect 

func (r *Lines) Connect() error

Connect attempts to establish a new scanner for an io.Reader.

func (*Lines) Read 

func (r *Lines) Read() (types.Message, error)

Read attempts to read a new line from the io.Reader.

func (*Lines) WaitForClose 

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

WaitForClose blocks until the reader input has closed down.

type MQTT 

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

MQTT is an input type that reads MQTT Pub/Sub messages.

func NewMQTT 

func NewMQTT(
	conf MQTTConfig, log log.Modular, stats metrics.Type,
) (*MQTT, error)

NewMQTT creates a new MQTT input type.

func (*MQTT) Acknowledge 

func (m *MQTT) Acknowledge(err error) error

Acknowledge instructs whether messages have been successfully propagated.

func (*MQTT) CloseAsync 

func (m *MQTT) CloseAsync()

CloseAsync shuts down the MQTT input and stops processing requests.

func (*MQTT) Connect 

func (m *MQTT) Connect() error

Connect establishes a connection to an MQTT server.

func (*MQTT) Read 

func (m *MQTT) Read() (types.Message, error)

Read attempts to read a new message from an MQTT broker.

func (*MQTT) WaitForClose 

func (m *MQTT) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the MQTT input has closed down.

type MQTTConfig 

type MQTTConfig struct {
	URLs         []string `json:"urls" yaml:"urls"`
	QoS          uint8    `json:"qos" yaml:"qos"`
	Topics       []string `json:"topics" yaml:"topics"`
	ClientID     string   `json:"client_id" yaml:"client_id"`
	CleanSession bool     `json:"clean_session" yaml:"clean_session"`
}

MQTTConfig contains configuration fields for the MQTT input type.

func NewMQTTConfig 

func NewMQTTConfig() MQTTConfig

NewMQTTConfig creates a new MQTTConfig with default values.

type NATS 

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

NATS is an input type that receives NATS messages.

func (*NATS) Acknowledge 

func (n *NATS) Acknowledge(err error) error

Acknowledge is a noop since NATS messages do not support acknowledgments.

func (*NATS) CloseAsync 

func (n *NATS) CloseAsync()

CloseAsync shuts down the NATS input and stops processing requests.

func (*NATS) Connect 

func (n *NATS) Connect() error

Connect establishes a connection to a NATS server.

func (*NATS) Read 

func (n *NATS) Read() (types.Message, error)

Read attempts to read a new message from the NATS subject.

func (*NATS) WaitForClose 

func (n *NATS) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the NATS input has closed down.

type NATSConfig 

type NATSConfig struct {
	URLs          []string `json:"urls" yaml:"urls"`
	Subject       string   `json:"subject" yaml:"subject"`
	QueueID       string   `json:"queue" yaml:"queue"`
	PrefetchCount int      `json:"prefetch_count" yaml:"prefetch_count"`
}

NATSConfig contains configuration fields for the NATS input type.

func NewNATSConfig 

func NewNATSConfig() NATSConfig

NewNATSConfig creates a new NATSConfig with default values.

type NATSStream 

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

NATSStream is an input type that receives NATSStream messages.

func (*NATSStream) Acknowledge 

func (n *NATSStream) Acknowledge(err error) error

Acknowledge instructs whether unacknowledged messages have been successfully propagated.

func (*NATSStream) CloseAsync 

func (n *NATSStream) CloseAsync()

CloseAsync shuts down the NATSStream input and stops processing requests.

func (*NATSStream) Connect 

func (n *NATSStream) Connect() error

Connect attempts to establish a connection to a NATS streaming server.

func (*NATSStream) Read 

func (n *NATSStream) Read() (types.Message, error)

Read attempts to read a new message from the NATS streaming server.

func (*NATSStream) WaitForClose 

func (n *NATSStream) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the NATSStream input has closed down.

type NATSStreamConfig 

type NATSStreamConfig struct {
	URLs            []string `json:"urls" yaml:"urls"`
	ClusterID       string   `json:"cluster_id" yaml:"cluster_id"`
	ClientID        string   `json:"client_id" yaml:"client_id"`
	QueueID         string   `json:"queue" yaml:"queue"`
	DurableName     string   `json:"durable_name" yaml:"durable_name"`
	UnsubOnClose    bool     `json:"unsubscribe_on_close" yaml:"unsubscribe_on_close"`
	StartFromOldest bool     `json:"start_from_oldest" yaml:"start_from_oldest"`
	Subject         string   `json:"subject" yaml:"subject"`
	MaxInflight     int      `json:"max_inflight" yaml:"max_inflight"`
}

NATSStreamConfig contains configuration fields for the NATSStream input type.

func NewNATSStreamConfig 

func NewNATSStreamConfig() NATSStreamConfig

NewNATSStreamConfig creates a new NATSStreamConfig with default values.

type NSQ 

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

NSQ is an input type that receives NSQ messages.

func (*NSQ) Acknowledge 

func (n *NSQ) Acknowledge(err error) error

Acknowledge instructs whether unacknowledged messages have been successfully propagated.

func (*NSQ) CloseAsync 

func (n *NSQ) CloseAsync()

CloseAsync shuts down the NSQ input and stops processing requests.

func (*NSQ) Connect 

func (n *NSQ) Connect() (err error)

Connect establishes a connection to an NSQ server.

func (*NSQ) HandleMessage 

func (n *NSQ) HandleMessage(message *nsq.Message) error

HandleMessage handles an NSQ message.

func (*NSQ) Read 

func (n *NSQ) Read() (types.Message, error)

Read attempts to read a new message from NSQ.

func (*NSQ) WaitForClose 

func (n *NSQ) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the NSQ input has closed down.

type NSQConfig 

type NSQConfig struct {
	Addresses       []string `json:"nsqd_tcp_addresses" yaml:"nsqd_tcp_addresses"`
	LookupAddresses []string `json:"lookupd_http_addresses" yaml:"lookupd_http_addresses"`
	Topic           string   `json:"topic" yaml:"topic"`
	Channel         string   `json:"channel" yaml:"channel"`
	UserAgent       string   `json:"user_agent" yaml:"user_agent"`
	MaxInFlight     int      `json:"max_in_flight" yaml:"max_in_flight"`
}

NSQConfig contains configuration fields for the NSQ input type.

func NewNSQConfig 

func NewNSQConfig() NSQConfig

NewNSQConfig creates a new NSQConfig with default values.

type Preserver 

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

Preserver is a wrapper for reader.Type implementations that keeps a buffer of sent messages until they are acknowledged. If an error occurs during message propagation the contents of the buffer will be resent instead of reading new messages until it is depleted. Preserver implements reader.Type.

func NewPreserver 

func NewPreserver(r Type) *Preserver

NewPreserver returns a new Preserver wrapper around a reader.Type.

func (*Preserver) Acknowledge 

func (p *Preserver) Acknowledge(err error) error

Acknowledge instructs whether messages read since the last Acknowledge call were successfully propagated. If the error is nil this will be forwarded to the underlying wrapped reader. If a non-nil error is returned the buffer of messages will be resent.

func (*Preserver) CloseAsync 

func (p *Preserver) CloseAsync()

CloseAsync triggers the asynchronous closing of the reader.

func (*Preserver) Connect 

func (p *Preserver) Connect() error

Connect attempts to establish a connection to the source, if unsuccessful returns an error. If the attempt is successful (or not necessary) returns nil.

func (*Preserver) Read 

func (p *Preserver) Read() (types.Message, error)

Read attempts to read a new message from the source.

func (*Preserver) WaitForClose 

func (p *Preserver) WaitForClose(tout time.Duration) error

WaitForClose blocks until either the reader is finished closing or a timeout occurs.

type RedisList 

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

RedisList is an input type that reads Redis List messages.

func NewRedisList 

func NewRedisList(
	conf RedisListConfig, log log.Modular, stats metrics.Type,
) (*RedisList, error)

NewRedisList creates a new RedisList input type.

func (*RedisList) Acknowledge 

func (r *RedisList) Acknowledge(err error) error

Acknowledge is a noop since Redis Lists do not support acknowledgements.

func (*RedisList) CloseAsync 

func (r *RedisList) CloseAsync()

CloseAsync shuts down the RedisList input and stops processing requests.

func (*RedisList) Connect 

func (r *RedisList) Connect() error

Connect establishes a connection to a Redis server.

func (*RedisList) Read 

func (r *RedisList) Read() (types.Message, error)

Read attempts to pop a message from a Redis list.

func (*RedisList) WaitForClose 

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

WaitForClose blocks until the RedisList input has closed down.

type RedisListConfig 

type RedisListConfig struct {
	URL     string `json:"url" yaml:"url"`
	Key     string `json:"key" yaml:"key"`
	Timeout string `json:"timeout" yaml:"timeout"`
}

RedisListConfig contains configuration fields for the RedisList input type.

func NewRedisListConfig 

func NewRedisListConfig() RedisListConfig

NewRedisListConfig creates a new RedisListConfig with default values.

type RedisPubSub 

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

RedisPubSub is an input type that reads Redis Pub/Sub messages.

func NewRedisPubSub 

func NewRedisPubSub(
	conf RedisPubSubConfig, log log.Modular, stats metrics.Type,
) (*RedisPubSub, error)

NewRedisPubSub creates a new RedisPubSub input type.

func (*RedisPubSub) Acknowledge 

func (r *RedisPubSub) Acknowledge(err error) error

Acknowledge is a noop since Redis pub/sub channels do not support acknowledgements.

func (*RedisPubSub) CloseAsync 

func (r *RedisPubSub) CloseAsync()

CloseAsync shuts down the RedisPubSub input and stops processing requests.

func (*RedisPubSub) Connect 

func (r *RedisPubSub) Connect() error

Connect establishes a connection to an RedisPubSub server.

func (*RedisPubSub) Read 

func (r *RedisPubSub) Read() (types.Message, error)

Read attempts to pop a message from a redis pubsub channel.

func (*RedisPubSub) WaitForClose 

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

WaitForClose blocks until the RedisPubSub input has closed down.

type RedisPubSubConfig 

type RedisPubSubConfig struct {
	URL         string   `json:"url" yaml:"url"`
	Channels    []string `json:"channels" yaml:"channels"`
	UsePatterns bool     `json:"use_patterns" yaml:"use_patterns"`
}

RedisPubSubConfig contains configuration fields for the RedisPubSub input type.

func NewRedisPubSubConfig 

func NewRedisPubSubConfig() RedisPubSubConfig

NewRedisPubSubConfig creates a new RedisPubSubConfig with default values.

type RedisStreams 

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

RedisStreams is an input type that reads Redis Streams messages.

func NewRedisStreams 

func NewRedisStreams(
	conf RedisStreamsConfig, log log.Modular, stats metrics.Type,
) (*RedisStreams, error)

NewRedisStreams creates a new RedisStreams input type.

func (*RedisStreams) Acknowledge 

func (r *RedisStreams) Acknowledge(err error) error

Acknowledge is a noop since Redis Lists do not support acknowledgements.

func (*RedisStreams) CloseAsync 

func (r *RedisStreams) CloseAsync()

CloseAsync shuts down the RedisStreams input and stops processing requests.

func (*RedisStreams) Connect 

func (r *RedisStreams) Connect() error

Connect establishes a connection to a Redis server.

func (*RedisStreams) Read 

func (r *RedisStreams) Read() (types.Message, error)

Read attempts to pop a message from a Redis list.

func (*RedisStreams) WaitForClose 

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

WaitForClose blocks until the RedisStreams input has closed down.

type RedisStreamsConfig 

type RedisStreamsConfig struct {
	URL             string   `json:"url" yaml:"url"`
	BodyKey         string   `json:"body_key" yaml:"body_key"`
	Streams         []string `json:"streams" yaml:"streams"`
	ConsumerGroup   string   `json:"consumer_group" yaml:"consumer_group"`
	ClientID        string   `json:"client_id" yaml:"client_id"`
	Limit           int64    `json:"limit" yaml:"limit"`
	StartFromOldest bool     `json:"start_from_oldest" yaml:"start_from_oldest"`
	CommitPeriod    string   `json:"commit_period" yaml:"commit_period"`
	Timeout         string   `json:"timeout" yaml:"timeout"`
}

RedisStreamsConfig contains configuration fields for the RedisStreams input type.

func NewRedisStreamsConfig 

func NewRedisStreamsConfig() RedisStreamsConfig

NewRedisStreamsConfig creates a new RedisStreamsConfig with default values.

type S3DownloadManagerConfig 

type S3DownloadManagerConfig struct {
	Enabled bool `json:"enabled" yaml:"enabled"`
}

S3DownloadManagerConfig is a config struct containing fields for an S3 download manager.

type SASLConfig 

type SASLConfig struct {
	Enabled  bool   `json:"enabled" yaml:"enabled"`
	User     string `json:"user" yaml:"user"`
	Password string `json:"password" yaml:"password"`
}

SASLConfig contains configuration for SASL based authentication.

type ScaleProto 

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

ScaleProto is an input type that contains Scalability Protocols messages.

func (*ScaleProto) Acknowledge 

func (s *ScaleProto) Acknowledge(err error) error

Acknowledge instructs whether the pending messages were propagated successfully.

func (*ScaleProto) CloseAsync 

func (s *ScaleProto) CloseAsync()

CloseAsync shuts down the ScaleProto input and stops processing requests.

func (*ScaleProto) Connect 

func (s *ScaleProto) Connect() error

Connect establishes a nanomsg socket.

func (*ScaleProto) Read 

func (s *ScaleProto) Read() (types.Message, error)

Read attempts to read a new message from the nanomsg socket.

func (*ScaleProto) WaitForClose 

func (s *ScaleProto) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the ScaleProto input has closed down.

type ScaleProtoConfig 

type ScaleProtoConfig struct {
	URLs        []string `json:"urls" yaml:"urls"`
	Bind        bool     `json:"bind" yaml:"bind"`
	SocketType  string   `json:"socket_type" yaml:"socket_type"`
	SubFilters  []string `json:"sub_filters" yaml:"sub_filters"`
	PollTimeout string   `json:"poll_timeout" yaml:"poll_timeout"`
	RepTimeout  string   `json:"reply_timeout" yaml:"reply_timeout"`
}

ScaleProtoConfig contains configuration fields for the ScaleProto input type.

func NewScaleProtoConfig 

func NewScaleProtoConfig() ScaleProtoConfig

NewScaleProtoConfig creates a new ScaleProtoConfig with default values.

type Type 

type Type interface {
	// Connect attempts to establish a connection to the source, if unsuccessful
	// returns an error. If the attempt is successful (or not necessary) returns
	// nil.
	Connect() error

	// Acknowledge, if applicable to the source, should send acknowledgments for
	// (or commit) all unacknowledged (or uncommitted) messages that have thus
	// far been consumed. If the error is non-nil this means the message was
	// unsuccessfully propagated down the pipeline, in which case it is up to
	// the implementation to decide whether to simply retry uncommitted messages
	// that are buffered locally, or to send the error upstream.
	Acknowledge(err error) error

	// Read attempts to read a new message from the source.
	Read() (types.Message, error)

	types.Closable
}

Type is a type that reads Benthos messages from an external source. If the source supports acknowledgements then it is the responsibility of Type implementations to ensure acknowledgements are not sent for consumed messages until a subsequent Acknowledge call contains a nil error.

func NewAMQP 

func NewAMQP(conf AMQPConfig, log log.Modular, stats metrics.Type) (Type, error)

NewAMQP creates a new AMQP input type.

func NewFiles 

func NewFiles(conf FilesConfig) (Type, error)

NewFiles creates a new Files input type.

func NewNATS 

func NewNATS(conf NATSConfig, log log.Modular, stats metrics.Type) (Type, error)

NewNATS creates a new NATS input type.

func NewNATSStream 

func NewNATSStream(conf NATSStreamConfig, log log.Modular, stats metrics.Type) (Type, error)

NewNATSStream creates a new NATSStream input type.

func NewNSQ 

func NewNSQ(conf NSQConfig, log log.Modular, stats metrics.Type) (Type, error)

NewNSQ creates a new NSQ input type.

func NewScaleProto 

func NewScaleProto(conf ScaleProtoConfig, log log.Modular, stats metrics.Type) (Type, error)

NewScaleProto creates a new ScaleProto input type.

type Websocket 

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

Websocket is an input type that reads Websocket messages.

func NewWebsocket 

func NewWebsocket(
	conf WebsocketConfig,
	log log.Modular,
	stats metrics.Type,
) (*Websocket, error)

NewWebsocket creates a new Websocket input type.

func (*Websocket) Acknowledge 

func (w *Websocket) Acknowledge(err error) error

Acknowledge instructs whether the pending messages were propagated successfully.

func (*Websocket) CloseAsync 

func (w *Websocket) CloseAsync()

CloseAsync shuts down the Websocket input and stops reading messages.

func (*Websocket) Connect 

func (w *Websocket) Connect() error

Connect establishes a connection to a Websocket server.

func (*Websocket) Read 

func (w *Websocket) Read() (types.Message, error)

Read attempts to read a new message from the websocket.

func (*Websocket) WaitForClose 

func (w *Websocket) WaitForClose(timeout time.Duration) error

WaitForClose blocks until the Websocket input has closed down.

type WebsocketConfig 

type WebsocketConfig struct {
	URL         string `json:"url" yaml:"url"`
	OpenMsg     string `json:"open_message" yaml:"open_message"`
	auth.Config `json:",inline" yaml:",inline"`
}

WebsocketConfig contains configuration fields for the Websocket input type.

func NewWebsocketConfig 

func NewWebsocketConfig() WebsocketConfig

NewWebsocketConfig creates a new WebsocketConfig with default values.

type ZMQ4Config 

type ZMQ4Config struct{}

ZMQ4Config is an empty stub for when ZMQ4 is not compiled.

func NewZMQ4Config 

func NewZMQ4Config() *ZMQ4Config

NewZMQ4Config returns nil.

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